阅读说明：本技术 环保型非金属模块化预制舱式智能变电站 (Environment-friendly nonmetal modularization prefabricated cabin formula intelligent substation ) 是由 左涛 宋英杰 沈宇 王福明 熊凯 于 2021-08-17 设计创作，主要内容包括：本发明公开了一种环保型非金属模块化预制舱式智能变电站；整站分为八个模块化预制舱：GIS预制舱、主变预制舱、35kV预制舱、10kV预制舱、二次组合设备预制舱、无功补偿预制舱、消弧线圈预制舱、生活预制舱。该产品将变电站GIS、主变、35kV开关柜、10kV开关柜、无功补偿(SVG)、消弧线圈、综自系统及其他辅控系统在工厂内安装调试完毕,装入环保型非金属模块化智能预制舱内,实现了电网建设中一、二次系统集成化、装配模块化、建设过程工厂化、施工简单化、外形美观化,缩短了建设周期,降低了工程造价,提高了电网运行的可靠性,满足了客户对变电站建设快速、安全、可靠、经济、环保的多种需求。(The invention discloses an environment-friendly nonmetal modular prefabricated cabin type intelligent substation; the whole station is divided into eight modular prefabricated cabins: the system comprises a GIS prefabricated cabin, a main transformer prefabricated cabin, a 35kV prefabricated cabin, a 10kV prefabricated cabin, a secondary combination equipment prefabricated cabin, a reactive compensation prefabricated cabin, an arc suppression coil prefabricated cabin and a living prefabricated cabin. The product finishes the installation and debugging of a GIS (gas insulated switchgear) of a transformer substation, a main transformer, a 35kV switch cabinet, a 10kV switch cabinet, reactive compensation (SVG), an arc suppression coil, a comprehensive automatic system and other auxiliary control systems in a factory, and is loaded into an environment-friendly nonmetal modular intelligent prefabricated cabin, so that the integration of a secondary system, the assembly modularization, the factorization of a construction process, the simplification of construction and the beautification of appearance in the construction of a power grid are realized, the construction period is shortened, the construction cost is reduced, the reliability of the operation of the power grid is improved, and the multiple requirements of customers on the construction of the transformer substation, such as rapidness, safety, reliability, economy and environmental protection, are met.)

1. An environment-friendly nonmetal modularized prefabricated cabin type intelligent substation is characterized in that; the whole station is divided into eight modular prefabricated cabins: the system comprises a GIS prefabricated cabin, a main transformer prefabricated cabin, a 35kV prefabricated cabin, a 10kV prefabricated cabin, a secondary combined equipment prefabricated cabin, a reactive compensation prefabricated cabin, an arc suppression coil prefabricated cabin and a living prefabricated cabin;

the eight modular prefabricated cabins are respectively provided with a cabin body, and the cabin bodies are subjected to system stress analysis and strength calculation; the cabin body is processed by enhanced environment-friendly materials; the cabin body can be transported integrally or separately according to the transformer substation site and road conditions; the cabin body comprises an anti-exposure layer, a waterproof layer, a flame-retardant layer, a high-strength polymer material layer, a heat insulation layer and an embedded part layer; after the overall structure of the cabin body is subjected to system stress analysis and strength calculation, a shell module is formed by pouring an enhanced environment-friendly material through a special process, the shell module is assembled and formed and then becomes a cabin body through internal and external decoration, and the corresponding cabin bodies are respectively implemented according to the following modes;

(1) factory production of the prefabricated cabin; when civil engineering work is carried out, all modules of the total station are prefabricated, assembled and debugged in an industrialized mode;

(2) distribution type transportation and assembly type construction; each module adopts standardized design, meets the road transportation requirement, is produced, is delivered to the site after the site has assembly conditions, is hoisted in place, and can realize the transformation of a transformer substation from scratch within 15-30 days;

(3) checking and accepting and commissioning; after each module is in place, primary and secondary connection construction is carried out, debugging, acceptance and commissioning are completed, and the construction period of the transformer substation is greatly shortened by a modular structure, split transportation and assembled design and installation mode.

2. The environment-friendly nonmetal modular prefabricated cabin-type intelligent substation of claim 1, wherein; the GIS prefabricated cabin adopts an overhead or cable mode as a wire inlet and outlet mode; the module structure is in split transportation, so that distribution is facilitated; the GIS prefabricated cabin is arranged in a single row, and an overhaul corridor, an SF6 monitoring alarm system and an automatic exhaust system are arranged in the GIS prefabricated cabin; meanwhile, a cushioning technology is adopted, and GIS operation vibration conduction is reduced.

3. The environment-friendly nonmetal modular prefabricated cabin-type intelligent substation of claim 1, wherein; a main transformer is arranged in the prefabricated cabin of the transformer, the capacity can be selected from 20MVA to 120MVA, and the main transformer can be flexibly selected according to the power load density; calculating and determining the voltage regulating mode of the transformer according to the system condition; the main transformer can adopt a two-winding, three-winding or self-coupling no-load voltage-regulating or on-load voltage-regulating transformer; the transformer can adopt split arrangement, the body is completely closed, noise is isolated, the radiator is fully open, and heat radiation is free of obstacles; an on-line monitoring device for gas in oil can be configured; the heat dissipation design is full self-cooling without a fan.

4. The environment-friendly nonmetal modular prefabricated cabin-type intelligent substation of claim 1, wherein; the 35kV prefabricated cabin is in a 35kV wire inlet and outlet mode, and an overhead or cable is adopted; KYN61-40.5 metal armored movable switch equipment or 40.5kV gas insulated switch equipment is adopted in the 35kV prefabricated cabin; the module structure is in split transportation, so that distribution is facilitated; single/double row arrangement; an overhaul corridor is arranged in the 35kV prefabricated cabin; a cable trench is arranged in the cabin; a fire early warning system is also arranged in the cabin to find faults in advance; SF6 monitors alarm and automatic air exhaust systems.

5. The environment-friendly nonmetal modular prefabricated cabin-type intelligent substation of claim 1, wherein; the 10kV prefabricated cabin is provided with metal armored central withdrawable switchgear, or XGN □ -12 box type fixed metal closed switchgear; the module structure is in split transportation, so that distribution is facilitated; the 10kV prefabricated cabin is arranged in a single row/double row mode, and an overhaul corridor is arranged inside the 10kV prefabricated cabin; a cable trench is arranged in the cabin; a fire early warning system is arranged in the cabin, and faults are found in advance.

6. The environment-friendly nonmetal modular prefabricated cabin-type intelligent substation of claim 1, wherein; the interior of the prefabricated cabin of the secondary combined equipment comprises a computer monitoring system; the system comprises a protection and automation device, a power supply system, electric energy metering equipment and a public system; the interior of the prefabricated cabin of the secondary combined equipment adopts a high-grade, standard cabinet type and double-row arrangement integrated design; arranging an overhaul corridor; an access door can be arranged at the rear part of the screen cabinet, so that the problem of rear access of the secondary equipment cabinet is solved;

the computer monitoring system is used for highly integrating, unifying platforms and unifying configurations of all monitoring systems such as equipment operation, environment monitoring, video monitoring and the like, and ensuring safe and reliable operation of the transformer substation;

the protection and automation device realizes the comprehensive automation functions of automatic monitoring, measurement, automatic control, microcomputer protection, dispatching communication and the like of main equipment and power transmission and distribution lines of the full substation;

the power supply system consists of a direct current operation power supply system, an alternating current operation power supply system and a UPS power supply system;

the electric energy metering equipment comprises a meter, and realizes the metering function;

the public system comprises a dispatching data network, a time synchronization system, a fire alarm system and a microcomputer five-prevention system, and ensures the whole safe and stable operation of the transformer substation.

7. The environment-friendly nonmetal modular prefabricated cabin-type intelligent substation of claim 1, wherein; the compensation capacity I corresponding to the reactive compensation prefabricated cabin is set to be 10% -30% of the main transformer capacity; the complete device can adopt various compensation schemes of TBB and SVG; the secondary equipment such as a capacitor, a reactor, a discharge coil and the like is integrated in a matched manner;

the arc suppression coil prefabricated cabin; configuring an arc suppression coil prefabricated cabin according to the scale of a transformer substation and user requirements; the specific grounding variable parameters are configured according to the requirements of a design institute; the arc suppression coil can be selected from a phase control type, a turn regulation type, a magnetic bias type and the like.

8. The environment-friendly nonmetal modular prefabricated cabin-type intelligent substation of claim 1, wherein; the living prefabricated cabin is provided with a prefabricated cabin lighting and ventilating system.

9. The environment-friendly nonmetal modular prefabricated cabin-type intelligent substation of claim 1, wherein; for the cabin body of the eight modular prefabricated cabins, the bottom frame of the prefabricated cabin is formed by welding H-shaped steel and channel steel, heat insulation and preservation are performed at the bottom, a rock wool board and a rock wool sandwich board are adopted, and meanwhile, a ceramic anti-static floor is laid on the inner surface of the bottom, so that the overall heat preservation effect of the prefabricated cabin is improved; the prefabricated cabin roof is characterized in that a resin tile is covered on the surface of a color foam steel plate, wherein the thickness of an anticorrosive layer of the color foam steel plate is 0.425mm, the density of flame-retardant foam is 18kg/m3, a double-slope roof structure is adopted, and the resin tile is laid according to the horizontal inclination of 6.6 degrees so as to prevent water accumulation and snow accumulation; the cabin roof adopts a centralized collecting and draining structure;

the control of the temperature and the humidity of the environment in the prefabricated cabin adopts a main positive pressure cooling and heating industrial air conditioner, a heater in a cabinet and a dehumidifier in the cabin, the refrigerating capacity of the air conditioner is configured according to 150W per square meter, the control range of the environmental temperature in the cabin is ensured to be +18 to +25 ℃, the relative humidity is controlled to be 45 to 75 percent, and no condensation exists in any case;

the ventilation in the prefabricated cabin is designed according to an accident exhaust system, a plurality of pairs of positive and negative rotating fans and air valves are adopted to strongly pump air, and the air in the cabin is replaced once in 5 minutes;

the prefabricated cabin interior illumination adopts an LED energy-saving environment-friendly lamp, the LED energy-saving environment-friendly lamp is configured according to the illumination intensity of a 0.75-meter horizontal plane in the cabin and is divided into normal illumination and emergency illumination, a power-off automatic switch is configured, and when a normal illumination power supply is powered off, the LED energy-saving environment-friendly lamp can be automatically switched to an emergency illumination power supply;

silicone rubber is additionally arranged at the cable inlet and outlet line positions of the prefabricated cabin body, a waterproof cover is additionally arranged at the vent hole, an ethylene propylene diene monomer sealing strip is additionally arranged on a cabin door plate, a foaming agent is filled in a splicing seam, a sealing glue is smeared, and waterproof and dustproof treatment is carried out to enhance the sealing performance and prevent moisture and dust from entering the cabin body;

the prefabricated cabin adopts the early warning technology of plasma temperature sensing and smoke detection, and can carry out very early warning on the fire; the prefabricated cabin adopts a multilayer composite sound insulation technology, a special door with the thickness of 2cm is additionally arranged in the cabin, a resistive or impedance composite muffler is additionally arranged at an air conditioner and a fan, an elastic material or a device is configured at an air conditioner mounting and fixing support, and a damping and active muffler device is additionally arranged at a transformer body and a foundation, so that the ambient noise of a transformer substation is less than 55dB, and the equipment is safer and quieter to operate;

the prefabricated cabin secondary screen cabinet adopts the width size of 800mm, is provided with a front wiring and front display type secondary device, and is arranged by two rows of walls, so that the prefabricated cabin capacity is increased, and the utilization rate of the space in the cabin is improved;

the optical fiber connection in the cabin and the optical fiber connection outside the cabin adopt a prefabricated optical cable, and the optical fiber connection in the cabin and the optical fiber connection outside the cabin adopt a prefabricated cable so as to replace the traditional optical cable fusion connection mode and the cable terminal row compression connection mode and realize plug and play of secondary equipment.

Technical Field

The invention relates to the technical field related to transformer substations, in particular to an environment-friendly nonmetal modular prefabricated cabin type 220kV (110kV) intelligent transformer substation.

Background

At present, a preassembled transformer substation is the most economical, most scientific and safest novel power distribution device in the current power distribution system, has the characteristics of compact structure, less occupied area, high reliability, simplicity and quickness in installation, strong standardization seriousness, easiness in coordination with the environment, flexibility in use, convenience in movement and the like, and very meets the requirements of transformation and development of modern urban and rural power distribution networks; at present, an intelligent substation capable of being implemented in a modularized mode is lacked.

Disclosure of Invention

Therefore, in order to solve the above disadvantages, the present invention provides an environment-friendly nonmetal modular prefabricated cabin type 220kV (110kV) intelligent substation; the product adopts a mode of 'modular design, industrial processing and assembly construction', and is characterized in that a GIS (gas insulated switchgear), a main transformer, a 35kV switch cabinet, a 10kV switch cabinet, a reactive compensation (SVG), an arc suppression coil, a comprehensive automatic system and other auxiliary control systems of a transformer substation are installed and debugged in a factory and are arranged in an environment-friendly nonmetal modular intelligent prefabricated cabin, so that eight modular prefabricated cabins such as a GIS prefabricated cabin, a main transformer prefabricated cabin, a 35kV prefabricated cabin, a 10kV prefabricated cabin, a secondary combination equipment prefabricated cabin, a reactive compensation (SVG) prefabricated cabin, an arc suppression coil prefabricated cabin and a living prefabricated cabin are formed, and the integration, the assembly modularization, the industrial construction, the simplification and the appearance beautification of a primary system and a secondary system in the power grid construction are realized, the construction period is shortened, the engineering cost is reduced, the reliability of the power grid operation is improved, and the requirements of customers on the rapid construction of the transformer substation are met, Safety, reliability, economy and environmental protection.

The invention is realized in such a way that an environment-friendly nonmetal modularized prefabricated cabin type intelligent substation is constructed, which is characterized in that; the whole station is divided into eight modular prefabricated cabins: the system comprises a GIS prefabricated cabin, a main transformer prefabricated cabin, a 35kV prefabricated cabin, a 10kV prefabricated cabin, a secondary combined equipment prefabricated cabin, a reactive compensation prefabricated cabin, an arc suppression coil prefabricated cabin and a living prefabricated cabin;

the eight modular prefabricated cabins are respectively provided with a cabin body, and the cabin bodies are subjected to system stress analysis and strength calculation; the cabin body is processed by enhanced environment-friendly materials; the cabin body can be transported integrally or separately according to the transformer substation site and road conditions; the cabin body comprises an anti-exposure layer, a waterproof layer, a flame-retardant layer, a high-strength polymer material layer, a heat insulation layer and an embedded part layer; after the overall structure of the cabin body is subjected to system stress analysis and strength calculation, a shell module is formed by pouring an enhanced environment-friendly material through a special process, the shell module is assembled and formed and then becomes a cabin body through internal and external decoration, and the corresponding cabin bodies are respectively implemented according to the following modes;

(1) factory production of the prefabricated cabin; when civil engineering work is carried out, all modules of the total station are prefabricated, assembled and debugged in an industrialized mode;

(2) distribution type transportation and assembly type construction; each module adopts standardized design, meets the road transportation requirement, is produced, is delivered to the site after the site has assembly conditions, is hoisted in place, and can realize the transformation of a transformer substation from scratch within 15-30 days;

(3) checking and accepting and commissioning; after each module is in place, primary and secondary connection construction is carried out, debugging, acceptance and commissioning are completed, and the construction period of the transformer substation is greatly shortened by a modular structure, split transportation and assembled design and installation mode.

The environment-friendly nonmetal modular prefabricated cabin type intelligent substation is characterized in that the intelligent substation comprises a base, a plurality of prefabricated cabins, a plurality of units and a plurality of units, wherein the base is provided with a plurality of units; the GIS prefabricated cabin adopts an overhead or cable mode as a wire inlet and outlet mode; the module structure is in split transportation, so that distribution is facilitated; the GIS prefabricated cabin is arranged in a single row, and an overhaul corridor, an SF6 monitoring alarm system and an automatic exhaust system are arranged in the GIS prefabricated cabin; meanwhile, a cushioning technology is adopted, and GIS operation vibration conduction is reduced.

The environment-friendly nonmetal modular prefabricated cabin type intelligent substation is characterized in that the intelligent substation comprises a base, a plurality of prefabricated cabins, a plurality of units and a plurality of units, wherein the base is provided with a plurality of units; a main transformer is arranged in the prefabricated cabin of the transformer, the capacity can be selected from 20MVA to 120MVA, and the main transformer can be flexibly selected according to the power load density; calculating and determining the voltage regulating mode of the transformer according to the system condition; the main transformer can adopt a two-winding, three-winding or self-coupling no-load voltage-regulating or on-load voltage-regulating transformer; the transformer can adopt split arrangement, the body is completely closed, noise is isolated, the radiator is fully open, and heat radiation is free of obstacles; an on-line monitoring device for gas in oil can be configured; the heat dissipation design is full self-cooling without a fan.

The environment-friendly nonmetal modular prefabricated cabin type intelligent substation is characterized in that the intelligent substation comprises a base, a plurality of prefabricated cabins, a plurality of units and a plurality of units, wherein the base is provided with a plurality of units; the 35kV prefabricated cabin is in a 35kV wire inlet and outlet mode, and an overhead or cable is adopted; KYN61-40.5 metal armored movable switch equipment or 40.5kV gas insulated switch equipment is adopted in the 35kV prefabricated cabin; the module structure is in split transportation, so that distribution is facilitated; single/double row arrangement; an overhaul corridor is arranged in the 35kV prefabricated cabin; a cable trench is arranged in the cabin; a fire early warning system is also arranged in the cabin to find faults in advance; SF6 monitors alarm and automatic air exhaust systems.

The environment-friendly nonmetal modular prefabricated cabin type intelligent substation is characterized in that the intelligent substation comprises a base, a plurality of prefabricated cabins, a plurality of units and a plurality of units, wherein the base is provided with a plurality of units; the 10kV prefabricated cabin is provided with metal armored central withdrawable switchgear, or XGN □ -12 box type fixed metal closed switchgear; the module structure is in split transportation, so that distribution is facilitated; the 10kV prefabricated cabin is arranged in a single row/double row mode, and an overhaul corridor is arranged inside the 10kV prefabricated cabin; a cable trench is arranged in the cabin; a fire early warning system is arranged in the cabin, and faults are found in advance.

The environment-friendly nonmetal modular prefabricated cabin type intelligent substation is characterized in that the intelligent substation comprises a base, a plurality of prefabricated cabins, a plurality of units and a plurality of units, wherein the base is provided with a plurality of units; the interior of the prefabricated cabin of the secondary combined equipment comprises a computer monitoring system; the system comprises a protection and automation device, a power supply system, electric energy metering equipment and a public system; the interior of the prefabricated cabin of the secondary combined equipment adopts a high-grade, standard cabinet type and double-row arrangement integrated design; arranging an overhaul corridor; an access door can be arranged at the rear part of the screen cabinet, so that the problem of rear access of the secondary equipment cabinet is solved;

the computer monitoring system is used for highly integrating, unifying platforms and unifying configurations of all monitoring systems such as equipment operation, environment monitoring, video monitoring and the like, and ensuring safe and reliable operation of the transformer substation;

the protection and automation device realizes the comprehensive automation functions of automatic monitoring, measurement, automatic control, microcomputer protection, dispatching communication and the like of main equipment and power transmission and distribution lines of the full substation;

the power supply system consists of a direct current operation power supply system, an alternating current operation power supply system and a UPS power supply system;

the electric energy metering equipment comprises a meter, and realizes the metering function;

the public system comprises a dispatching data network, a time synchronization system, a fire alarm system and a microcomputer five-prevention system, and ensures the whole safe and stable operation of the transformer substation.

The environment-friendly nonmetal modular prefabricated cabin type intelligent substation is characterized in that the intelligent substation comprises a base, a plurality of prefabricated cabins, a plurality of units and a plurality of units, wherein the base is provided with a plurality of units; the compensation capacity I corresponding to the reactive compensation prefabricated cabin is set to be 10% -30% of the main transformer capacity; the complete device can adopt various compensation schemes such as TBB, SVG and the like; the secondary equipment such as a capacitor, a reactor, a discharge coil and the like is integrated in a matched manner;

the arc suppression coil prefabricated cabin; configuring an arc suppression coil prefabricated cabin according to the scale of a transformer substation and user requirements; the specific grounding variable parameters are configured according to the requirements of a design institute; the arc suppression coil can be selected from a phase control type, a turn regulation type, a magnetic bias type and the like.

The environment-friendly nonmetal modular prefabricated cabin type intelligent substation is characterized in that the intelligent substation comprises a base, a plurality of prefabricated cabins, a plurality of units and a plurality of units, wherein the base is provided with a plurality of units; the living prefabricated cabin is provided with a prefabricated cabin lighting and ventilating system; the lighting system; each prefabricated cabin is provided with an LED cold light source lighting system which reaches 300-500LX and is far higher than the requirement of the architectural lighting design standard (GB 50034); the ventilation system; each prefabricated cabin is provided with a good natural ventilation system and a good forced-ventilated ventilation system according to different equipment in the cabin.

The environment-friendly nonmetal modular prefabricated cabin type intelligent substation is characterized in that the intelligent substation comprises a base, a plurality of prefabricated cabins, a plurality of units and a plurality of units, wherein the base is provided with a plurality of units; for the cabin body of the eight modular prefabricated cabins, the bottom frame of the prefabricated cabin is formed by welding H-shaped steel and channel steel, heat insulation and preservation are performed at the bottom, a rock wool board and a rock wool sandwich board are adopted, and meanwhile, a ceramic anti-static floor is laid on the inner surface of the bottom, so that the overall heat preservation effect of the prefabricated cabin is improved; the prefabricated cabin roof is characterized in that a resin tile is covered on the surface of a color foam steel plate, wherein the thickness of an anticorrosive layer of the color foam steel plate is 0.425mm, the density of flame-retardant foam is 18kg/m3, a double-slope roof structure is adopted, and the resin tile is laid according to the horizontal inclination of 6.6 degrees so as to prevent water accumulation and snow accumulation; the cabin roof adopts a centralized collecting and draining structure;

the control of the temperature and the humidity of the environment in the prefabricated cabin adopts a main positive pressure cooling and heating industrial air conditioner, a heater in a cabinet and a dehumidifier in the cabin, the refrigerating capacity of the air conditioner is configured according to 150W per square meter, the control range of the environmental temperature in the cabin is ensured to be +18 to +25 ℃, the relative humidity is controlled to be 45 to 75 percent, and no condensation exists in any case;

the ventilation in the prefabricated cabin is designed according to an accident exhaust system, a plurality of pairs of positive and negative rotating fans and air valves are adopted to strongly pump air, and the air in the cabin is replaced once in 5 minutes;

the prefabricated cabin interior illumination adopts an LED energy-saving environment-friendly lamp, the LED energy-saving environment-friendly lamp is configured according to the illumination intensity of a 0.75-meter horizontal plane in the cabin and is divided into normal illumination and emergency illumination, a power-off automatic switch is configured, and when a normal illumination power supply is powered off, the LED energy-saving environment-friendly lamp can be automatically switched to an emergency illumination power supply;

silicone rubber is additionally arranged at the cable inlet and outlet line positions of the prefabricated cabin body, a waterproof cover is additionally arranged at the vent hole, an ethylene propylene diene monomer sealing strip is additionally arranged on a cabin door plate, a foaming agent is filled in a splicing seam, a sealing glue is smeared, and waterproof and dustproof treatment is carried out to enhance the sealing performance and prevent moisture and dust from entering the cabin body;

the prefabricated cabin adopts the early warning technology of plasma temperature sensing and smoke detection, and can carry out very early warning on the fire; the prefabricated cabin adopts a multilayer composite sound insulation technology, a special door with the thickness of 2cm is additionally arranged in the cabin, a resistive or impedance composite muffler is additionally arranged at an air conditioner and a fan, an elastic material or a device is configured at an air conditioner mounting and fixing support, and a damping and active muffler device is additionally arranged at a transformer body and a foundation, so that the ambient noise of a transformer substation is less than 55dB, and the equipment is safer and quieter to operate;

the prefabricated cabin secondary screen cabinet adopts the width size of 800mm, is provided with a front wiring and front display type secondary device, and is arranged by two rows of walls, so that the prefabricated cabin capacity is increased, and the utilization rate of the space in the cabin is improved;

the optical fiber connection in the cabin and the optical fiber connection outside the cabin adopt a prefabricated optical cable, and the optical fiber connection in the cabin and the optical fiber connection outside the cabin adopt a prefabricated cable so as to replace the traditional optical cable fusion connection mode and the cable terminal row compression connection mode and realize plug and play of secondary equipment.

The invention has the following advantages:

1. the product integrates an intelligent transformer substation technology, a modular prefabricated cabin type technology and a high-performance fiber composite material prefabricated part technology, each device of the transformer substation is divided into different prefabricated cabin modules according to functions, and each device is integrated in a plurality of nonmetal prefabricated cabin bodies according to corresponding functions.

2. Innovate and researched an environment-friendly non-metallic material for prefabricating the cabin body, namely a basalt fiber composite material prefabricated part. The prefabricated member has strong impact resistance (impact resistance energy)>20J) Strong anti-corrosion capability (no rusting in 60 years), strong radiation protection (radiation index lower than national standard), good heat insulation performance (heat transfer coefficient)<2.0W/(m²K)), good freeze resistance (freeze-thaw durability times)>15 times), good sound insulation performance (not higher than 5 grade of air sound insulation performance of building components), good combustion performance (reaching non-combustible A (A1) grade), good fire resistance (fire resistance is more than 3 hours), good weather resistance and other good physical properties.

3. The basalt fiber composite prefabricated part is spliced and formed by a dry construction method, and a non-metal prefabricated cabin module formed by internal and external decoration has key physical properties of good weather resistance (good freezing resistance, strong impact resistance, strong corrosion resistance and strong radiation resistance), good sealing performance (good combustion performance, good fire resistance, good sound insulation performance and good heat insulation performance), moisture resistance, condensation resistance and the like, and effectively overcomes the defects and the defects of easy corrosion, poor waterproof performance, large heat conductivity coefficient and poor fireproof performance of the metal prefabricated cabin.

4. The modular design of each prefabricated cabin can adopt flexible building block type combination arrangement in the forms of upper and lower double-layer three-dimensional, in-line and L-shaped according to the site terrain, thereby greatly reducing the floor area of the transformer substation.

5. The prefabricated cabin underframe is formed by welding H-shaped steel and channel steel, adopts a rock wool board and a rock wool sandwich board for bottom heat insulation and heat preservation, and simultaneously lays a ceramic anti-static floor on the inner surface of the bottom so as to improve the overall heat preservation effect of the prefabricated cabin. The prefabricated cabin roof is covered with resin tiles on the surface of a foam color steel plate, wherein the thickness of an anticorrosive layer of the roof color steel plate is 0.425mm, and the density of flame-retardant foam is 18kg/m³The double-slope roof structure is adopted, and the resin tiles are laid according to the horizontal inclination of 6.6 degrees to prevent water accumulation and snow accumulation. The cabin body roof adopts a centralized collecting and draining structure.

6. The control of the temperature and the humidity of the environment in the prefabricated cabin adopts one main air conditioner and one standby air conditioner, a heater in a cabinet and a dehumidifier in the cabin, the refrigerating capacity of the air conditioners is configured according to 150W per square meter, the control range of the environmental temperature in the cabin is ensured to be +18 to +25 ℃, the relative humidity is controlled to be 45 to 75 percent, and no condensation exists in any situation.

7. The ventilation in the prefabricated cabin is designed according to an accident exhaust system, a plurality of pairs of positive and negative rotating fans and air valves are adopted to strongly pump air, and the air in the cabin is replaced once in 5 minutes.

8. The prefabricated cabin interior illumination adopts an LED energy-saving environment-friendly lamp, the LED energy-saving environment-friendly lamp is configured according to the illumination intensity of a 0.75-meter horizontal plane in the cabin and is divided into normal illumination and emergency illumination, a power-off automatic switch is configured, and when a normal illumination power supply is powered off, the LED energy-saving environment-friendly lamp can be automatically switched to an emergency illumination power supply.

9. The cable inlet and outlet line positions of the prefabricated cabin body are additionally provided with silicon rubber, the vent holes are additionally provided with waterproof covers, the cabin door plates are additionally provided with ethylene propylene diene monomer sealing strips, the joints are filled with foaming agents and coated with sealing glue, and waterproof and dustproof treatment is carried out to enhance the sealing performance and prevent moisture and dust from entering the cabin body.

10. The prefabricated cabin adopts the early warning technology of plasma temperature sensing and smoke detection, and can carry out very early warning on the fire.

11. The prefabricated cabin adopts a multilayer composite sound insulation technology, a special door with the thickness of 2cm is additionally arranged in the cabin, a resistive or impedance composite silencer is additionally arranged at an air conditioner and a fan, an elastic material or a device is arranged at an air conditioner installation fixing support, and a damping and active silencing device is additionally arranged at a transformer body and a foundation, so that the ambient noise of a transformer substation is less than 55dB, and the equipment runs more safely and quietly.

12. The prefabricated cabin secondary screen cabinet adopts 800mm wide size, is provided with a front wiring and a front display type secondary device, and is arranged by walls in double rows, so that the prefabricated cabin capacity is increased, and the utilization rate of the space in the cabin is improved.

13. The plug-and-play technology of prefabricated optical cables and cables is adopted for secondary wiring of the prefabricated cabin, the prefabricated optical cables are adopted for connection between the optical fibers outside the cabin and the optical fibers inside the cabin, the prefabricated cables are adopted for connection between the optical cables outside the cabin and the optical cables inside the cabin, the traditional optical cable fusion mode and the cable terminal row compression mode are replaced, and plug-and-play of secondary equipment is achieved.

Drawings

FIG. 1 is a schematic view of the structure of the cabin according to the present invention;

FIG. 2 is a schematic view of a GIS prefabricated cabin of the present invention;

FIG. 3 is a schematic view of a main transformer prefabricated cabin of the invention;

FIG. 4 is a schematic view of a 35kV prefabricated cabin of the present invention;

FIG. 5 is a schematic view of a 10kV prefabricated cabin of the present invention;

FIG. 6 is a schematic view of a prefabricated cabin of the secondary combined equipment of the present invention;

FIG. 7 is a schematic view of a reactive compensation (SVG) prefabricated cabin of the present invention;

FIG. 8 is a schematic view of a pre-fabricated capsule for an arc suppression coil of the present invention;

fig. 9 is a schematic view of a living prefabricated cabin of the invention.

Detailed Description

The present invention will be described in detail with reference to fig. 1 to 9, and the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides an environment-friendly nonmetal modular prefabricated cabin type 220kV (110kV) intelligent substation through improvement; the product adopts a mode of 'modular design, industrial processing and assembly construction', and is characterized in that a GIS (gas insulated switchgear), a main transformer, a 35kV switch cabinet, a 10kV switch cabinet, a reactive compensation (SVG), an arc suppression coil, a comprehensive automatic system and other auxiliary control systems of a transformer substation are installed and debugged in a factory and are arranged in an environment-friendly nonmetal modular intelligent prefabricated cabin, so that eight modular prefabricated cabins such as a GIS prefabricated cabin, a main transformer prefabricated cabin, a 35kV prefabricated cabin, a 10kV prefabricated cabin, a secondary combination equipment prefabricated cabin, a reactive compensation (SVG) prefabricated cabin, an arc suppression coil prefabricated cabin and a living prefabricated cabin are formed, and the integration, the assembly modularization, the industrial construction, the simplification and the appearance beautification of a primary system and a secondary system in the power grid construction are realized, the construction period is shortened, the engineering cost is reduced, the reliability of the power grid operation is improved, and the requirements of customers on the rapid construction of the transformer substation are met, Safety, reliability, economy and environmental protection.

The application range is as follows: the method is suitable for new construction and reconstruction (expansion) engineering projects of transformer substations of 500kV or below in various industries, various regions and various environments.

The use conditions are as follows: 1. the altitude of the installation site is 5500m and below; 2. ambient temperature: the highest air temperature is +55 ℃; the lowest temperature is-45 ℃; 3. the seismic intensity is IX.

Main technical parameters; 1. the voltage grade is less than or equal to 500 kV; 2. the transformer capacity is 20 MVA-240 MVA.

The product adopts the modularized design, and the whole station divide into eight modularization prefabricated cabins: the system comprises a GIS prefabricated cabin, a main transformer prefabricated cabin, a 35kV prefabricated cabin, a 10kV prefabricated cabin, a secondary combined equipment prefabricated cabin, a reactive compensation (SVG) prefabricated cabin, an arc suppression coil prefabricated cabin and a living prefabricated cabin.

And the corresponding cabin body is subjected to system stress analysis and strength calculation. The cabin body is made of more than ten enhanced environment-friendly materials through special processing. The cabin body can be transported integrally or separately according to the transformer substation site and road conditions.

The following detailed description is respectively made for eight modular prefabricated cabins;

the GIS prefabricated cabin is shown in figure 2; the wire inlet and outlet mode adopts a GIS wire inlet and outlet mode, namely an overhead or cable mode. The primary equipment adopts international/domestic advanced technology GIS combined electrical equipment. The GIS combined electrical equipment meets all primary schemes and various arrangement modes of the GIS combined electrical equipment. Common electrical control or intelligent digital control can be realized according to the requirements of customers. An automatic SF6 gas recovery device can be optionally arranged.

Structural arrangement; the module structure is in split transportation, and distribution is convenient. And the single-row arrangement is used for arranging an overhaul corridor. SF6 monitors alarm and automatic air exhaust systems. And a cushioning technology is adopted, so that the vibration conduction of GIS operation is reduced.

The prefabricated cabin of the transformer is shown in figure 3; a main transformer; the selectable range of the capacity is 20 MVA-120 MVA, and the capacity can be flexibly selected according to the power load density; and the voltage regulating mode of the transformer is determined by calculation according to the system condition. The main transformer can adopt a two-winding, three-winding or self-coupling no-load voltage-regulating or on-load voltage-regulating transformer; the transformer can adopt split arrangement, the body is completely closed, noise is isolated, the radiator is fully open, and heat radiation is free of obstacles; an on-line monitoring device for gas in oil can be configured; the heat dissipation design is full self-cooling without a fan.

The 35kV prefabricated cabin is shown in FIG. 4; the wire inlet and outlet mode is 35kV wire inlet and outlet-aerial or cable. The primary equipment can adopt KYN61-40.5 metal armored movable switch equipment and also can adopt 40.5kV gas insulated switch equipment. The structure is arranged, the module structure is adopted, and the split transportation is realized, so that the distribution is convenient; arranging in single row/double row, and arranging an overhaul corridor; a cable trench is arranged in the cabin; a fire early warning system is arranged in the cabin, and faults are found in advance; SF6 monitors alarm and automatic exhaust system (matching 40.5kV gas insulated switch equipment).

As shown in FIG. 5, the 10kV prefabricated cabin can adopt KYN-12 metal armored central withdrawable switchgear or XGN-12 box type fixed metal closed switchgear. The structure is arranged: the module structure is in split transportation, so that distribution is facilitated; arranging in single row/double row, and arranging an overhaul corridor; a cable trench is arranged in the cabin; a fire early warning system is arranged in the cabin, and faults are found in advance.

The prefabricated cabin of the secondary combined equipment is shown in figure 6; a computer monitoring system; the system is highly integrated, unified in platform and configuration, and ensures safe and reliable operation of the transformer substation for all monitoring systems such as equipment operation, environment monitoring, video monitoring and the like.

A protection and automation device; the comprehensive automatic functions of automatic monitoring, measurement, automatic control, microcomputer protection, dispatching communication and the like of main equipment and power transmission and distribution lines of the full substation are realized.

The power supply system consists of a direct current operation power supply system, an alternating current operation power supply system and a UPS power supply system.

The electric energy metering equipment is provided with a meter to realize the metering function.

The public system comprises a dispatching data network, a time synchronization system, a fire alarm system, a microcomputer five-prevention system and the like, and ensures the whole safe and stable operation of the transformer substation.

The structure is arranged: adopts high-grade, standard cabinet type and double-row arrangement integrated design. And arranging an overhaul corridor. The screen cabinet rear portion can set up the access door, solves secondary equipment cabinet back maintenance difficult problem.

The reactive compensation (SVG) prefabricated cabin is shown in fig. 7; and setting a reactive compensation prefabricated cabin according to the scale of the transformer substation and the requirements of users. The first compensation capacity is set to be 10% -30% of the main transformer capacity. The complete equipment can adopt various compensation schemes such as TBB, SVG and the like. And a primary and secondary device such as a capacitor, a reactor and a discharge coil is integrated in the device.

The arc suppression coil prefabricated cabin is shown in figure 8; and configuring an arc suppression coil prefabricated cabin according to the scale of the transformer substation and the requirements of users. The specific grounding variable parameters are configured according to the requirements of a design institute. The arc suppression coil can be selected from a phase control type, a turn regulation type, a magnetic bias type and the like.

The living prefabricated cabin is shown in figure 9; according to the design of home, it is warm and comfortable. Prefabricated cabin illumination, ventilation system.

An illumination system; and each prefabricated cabin is provided with an LED cold light source lighting system which reaches 300-500LX and is far higher than the requirement of the design standard for architectural lighting (GB 50034).

A ventilation system; each prefabricated cabin is provided with a good natural ventilation system and a good forced-ventilated ventilation system according to different equipment in the cabin.

The cabin body of the invention has the following characteristics: after the overall structure of the cabin body is subjected to system stress analysis and strength calculation, an enhanced environment-friendly material is poured to form a shell module through a special process, and after the shell module is assembled and formed, the cabin body is formed through internal and external decoration, and the cabin body has the following characteristics:

fire prevention: the fireproof grade is high-above A1 grade, and the fireproof time is more than 3 hours;

ventilating: the air permeability is good, namely the air permeability reaches the standard of the comfort level of resident houses;

moisture protection: the moisture resistance is strong, and the box body contains moisture-proof materials and does not condense;

and (3) sound insulation: the sound insulation effect is good, namely the sound barrier technology is adopted, and the noise of the transformer is reduced to be below 40 dB;

heat insulation: good heat insulation-insolation resistance, shell grade 20K;

impact resistance: the impact resistance is strong, namely the mechanical strength is high and is far higher than the 20J external mechanical impact energy requirement specified by GB/T17467 national standard;

freezing resistance: the freezing resistance is strong;

service life: the box body is internally provided with special materials, so that the corrosion resistance is strong, and the service life is as long as 50 years;

the appearance is beautiful: can be colored drawing or sprayed stone decoration and is integrated with the environment;

occupying the land: the land occupation is small, the layout is flexible, and the method is not limited by terrain;

the station building is quick: and building the station for 2-4 months.

The station building mode is as follows:

civil engineering work: on site, all module foundations, cable ducts and related auxiliary facilities are manufactured only after field leveling, and civil engineering work can be finished. Compared with the traditional station building mode, the civil engineering structure is replaced by the prefabricated cabin, the civil engineering workload is greatly reduced, the problems of large civil engineering amount and long construction period of the traditional station building mode are solved, and the condition that the station building time is restricted by civil engineering is avoided.

And (3) factory production of the prefabricated cabin: when civil engineering work is carried out, all modules of the total station are prefabricated, assembled and debugged in an industrial mode.

Distribution type transportation and assembly type construction: each module adopts standardized design, meets the road transportation requirement, is produced, is delivered to the site after the site has assembly conditions, is hoisted in place, and can realize the transformation of the transformer substation from scratch within 15-30 days.

Checking and accepting and commissioning: and after the modules are in place, performing primary and secondary connection construction, and debugging, checking, accepting and commissioning after the construction is finished. The modular structure, the split transportation and the assembly type design and installation modes greatly shorten the construction period of the transformer substation.

The environment-friendly nonmetal modular prefabricated cabin type 220kV (110kV) intelligent substation is a new generation prefabricated cabin type substation product which is innovated and upgraded by fusing an intelligent substation technology, a modular prefabricated cabin type technology and a high-performance fiber composite material prefabricated part technology on the basis of a mature manufacturing technology of an environment-friendly nonmetal box type substation product according to a station building concept of 'standardized design, industrial processing and assembly type construction' of a distribution type intelligent substation of national power grid company standard.

The product can be divided into eight modularized prefabricated cabins such as a 110kV GIS combined electrical apparatus prefabricated cabin, a main transformer prefabricated cabin, a 35kV switchgear prefabricated cabin, a 10kV switchgear prefabricated cabin, a secondary combined apparatus prefabricated cabin, a reactive compensation (SVG) prefabricated cabin, an arc suppression coil prefabricated cabin and a living prefabricated cabin according to the functions of a transformer substation, wherein the cabin bodies are all high-performance fiber concrete prefabricated components (the prefabricated components are high-performance fiber composite materials which are formed by pouring various materials such as glass fibers or basalt fiber meshes, high polymer materials, fast-hardening sulphoaluminate cement, sand, compounds and the like into molds made of channel steel and steel bars according to specific proportions through stirring and high-pressure injection and standing for 24 hours) in a factory, and the high-performance fiber composite materials are formed by dry splicing and forming and decoration through internal and external decoration. The cabin is internally provided with primary equipment, secondary equipment, power supply equipment, communication equipment, security protection, fire protection, video monitoring and other auxiliary facilities, and has the same functions as the secondary equipment room of the conventional transformer substation. Air conditioning, illumination, emergency light facility are still provided with in the cabin body, provide suitable environment for equipment operation and fortune dimension operation, help delaying equipment ageing, increase of service life. The electric equipment in the prefabricated cabin completes the work of manufacture, assembly, wiring, debugging and the like in a factory, and after appropriate measures are taken to effectively fix the electric equipment under the comprehensive consideration of transportation conditions, the electric equipment is integrally or sectionally distributed to a transformer substation construction site in a modularized prefabricated cabin form to be hoisted, combined and in place, and the whole station has no civil buildings above the ground.

The product completely follows the existing national standards and industrial specifications related to the design, production and assembly of the transformer substation and the power equipment, and also meets the requirements of national network standard distribution type station building, so that the product is green and environment-friendly (low energy consumption, small environmental influence and strong human body comfort); the occupied area is small (the layout is compact, and the occupied area and the height are reduced by more than 30 percent compared with a civil substation); the construction period is short (compared with the conventional civil transformer substation, the field civil work load is reduced by more than 70%, the equipment installation work load is reduced by more than 80%, and the total station construction period only takes 60 days); construction investment is saved (compared with the traditional civil transformer substation, the whole life cycle operation cost is reduced by about 7 percent); the safety and reliability (the whole station has no exposed electric conductor, no exposed electrical equipment, high cabin protection level and no accidental electric shock risk); the layout is flexible (double-layer three-dimensional arrangement (the prefabricated cabin of the 110kV GIS combined electrical appliance is arranged on the top to save space, the prefabricated cabin of the 35kV switchgear, the prefabricated cabin of the 10kV switchgear and the prefabricated cabin of the secondary combined equipment are arranged in a shape like a finished product), or the building block type combination arrangement like a Chinese character 'yi' and 'L' can be adopted according to the site landform; the intelligent substation building system has the advantages of attractive appearance (the housing is sprayed with colors and patterns, and the housing is integrated with the surrounding environment) and the like, so that the four-way requirements of integration, production industrialization, assembly modularization and construction simplification of a new-generation intelligent substation building system are met, the intelligent substation building system is an innovative rapid distribution type and rapid assembly type building mode, and various requirements of green, environmental protection, attractiveness, safety, reliability, rapidness and economy on the intelligent substation building are greatly met.

The project product has the main technical characteristics that:

1. the product integrates an intelligent transformer substation technology, a modular prefabricated cabin type technology and a high-performance fiber composite material prefabricated part technology, each device of the transformer substation is divided into different prefabricated cabin modules according to functions, and each device is integrated in a plurality of nonmetal prefabricated cabin bodies according to corresponding functions.

2. Innovate and researched an environment-friendly non-metallic material for prefabricating the cabin body, namely a basalt fiber composite material prefabricated part. The prefabricated member has strong impact resistance (impact resistance is more than 20J), strong corrosion resistance (no rustiness in 60 years), strong radiation resistance (radiation index is lower than the national standard), and good heat insulation performance (heat transfer coefficient)

<2.0W/(m 2. k)), good freezing resistance (the freeze-thaw resistance is more than 15 times), good sound insulation (not higher than 5-grade sound insulation of air of building components), good combustion performance (reaching non-combustible A (A1) grade), good fire resistance (fire resistance is more than 3 hours), good weather resistance and other good physical properties.

3. The basalt fiber composite prefabricated part is spliced and formed by a dry construction method, and a non-metal prefabricated cabin module formed by internal and external decoration has key physical properties of good weather resistance (good freezing resistance, strong impact resistance, strong corrosion resistance and strong radiation resistance), good sealing performance (good combustion performance, good fire resistance, good sound insulation performance and good heat insulation performance), moisture resistance, condensation resistance and the like, and effectively overcomes the defects and the defects of easy corrosion, poor waterproof performance, large heat conductivity coefficient and poor fireproof performance of the metal prefabricated cabin.

4. The modular design of each prefabricated cabin can adopt flexible building block type combination arrangement in the forms of upper and lower double-layer three-dimensional, in-line and L-shaped according to the site terrain, thereby greatly reducing the floor area of the transformer substation.

5. The prefabricated cabin underframe is formed by welding H-shaped steel and channel steel, adopts a rock wool board and a rock wool sandwich board for bottom heat insulation and heat preservation, and simultaneously lays a ceramic anti-static floor on the inner surface of the bottom so as to improve the overall heat preservation effect of the prefabricated cabin. The prefabricated cabin roof is characterized in that a resin tile is covered on the surface of a color foam steel plate, the thickness of an anticorrosive layer of the color foam steel plate on the roof is 0.425mm, the density of flame-retardant foam is 18kg/m3, a double-slope roof structure is adopted, and the resin tile is laid according to the horizontal inclination of 6.6 degrees to prevent water accumulation and snow accumulation. The cabin body roof adopts a centralized collecting and draining structure.

6. The control of the temperature and the humidity of the environment in the prefabricated cabin adopts one main air conditioner and one standby air conditioner, a heater in a cabinet and a dehumidifier in the cabin, the refrigerating capacity of the air conditioners is configured according to 150W per square meter, the control range of the environmental temperature in the cabin is ensured to be +18 to +25 ℃, the relative humidity is controlled to be 45 to 75 percent, and no condensation exists in any situation.

7. The ventilation in the prefabricated cabin is designed according to an accident exhaust system, a plurality of pairs of positive and negative rotating fans and air valves are adopted to strongly pump air, and the air in the cabin is replaced once in 5 minutes.

8. The prefabricated cabin interior illumination adopts an LED energy-saving environment-friendly lamp, the LED energy-saving environment-friendly lamp is configured according to the illumination intensity of a 0.75-meter horizontal plane in the cabin and is divided into normal illumination and emergency illumination, a power-off automatic switch is configured, and when a normal illumination power supply is powered off, the LED energy-saving environment-friendly lamp can be automatically switched to an emergency illumination power supply.

9. The cable inlet and outlet line positions of the prefabricated cabin body are additionally provided with silicon rubber, the vent holes are additionally provided with waterproof covers, the cabin door plates are additionally provided with ethylene propylene diene monomer sealing strips, the joints are filled with foaming agents and coated with sealing glue, and waterproof and dustproof treatment is carried out to enhance the sealing performance and prevent moisture and dust from entering the cabin body.

10. The prefabricated cabin adopts the early warning technology of plasma temperature sensing and smoke detection, and can carry out very early warning on the fire.

11. The prefabricated cabin adopts a multilayer composite sound insulation technology, a special door with the thickness of 2cm is additionally arranged in the cabin, a resistive or impedance composite silencer is additionally arranged at an air conditioner and a fan, an elastic material or a device is arranged at an air conditioner installation fixing support, and a damping and active silencing device is additionally arranged at a transformer body and a foundation, so that the ambient noise of a transformer substation is less than 55dB, and the equipment runs more safely and quietly.

12. The prefabricated cabin secondary screen cabinet adopts 800mm wide size, is provided with a front wiring and a front display type secondary device, and is arranged by walls in double rows, so that the prefabricated cabin capacity is increased, and the utilization rate of the space in the cabin is improved.

13. The plug-and-play technology of prefabricated optical cables and cables is adopted for secondary wiring of the prefabricated cabin, the prefabricated optical cables are adopted for connection between the optical fibers outside the cabin and the optical fibers inside the cabin, the prefabricated cables are adopted for connection between the optical cables outside the cabin and the optical cables inside the cabin, the traditional optical cable fusion mode and the cable terminal row compression mode are replaced, and plug-and-play of secondary equipment is achieved.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.