阅读说明：本技术 一种新型环网柜智能综合测控装置设计 (Novel looped netowrk cabinet intelligence is synthesized and is observed and controled device design ) 是由 董自刚 张立 陈印淼 于 2020-12-08 设计创作，主要内容包括：本发明公开的属于发电保护技术领域,具体为一种新型环网柜智能综合测控装置设计,包括显示模块、指示控制模块、监控模块、测控主体、保护装置、DTU、CT/PT、除湿器、电缆测温故障传感器、开关操作模块、电源模块与光纤,所述测控主体包括通讯模块、CPU、辅助接点一、辅助接点二、远方操控模块、模拟量输入模块、除湿控制模块、测温故障指示模块,所述显示模块、指示控制模块、开关操作模块均与测控主体连接,所述保护装置与辅助接点一连接,本发明,应用场合为配电环网柜内部,电磁干扰强、环境恶劣,本装置采取高标准设计,能够克服了开关柜内高电压、大电流的强电场、强电磁辐射、高频噪声和谐波的干扰问题。(The invention belongs to the technical field of power generation protection, and particularly relates to a novel intelligent comprehensive measurement and control device design for a ring main unit, which comprises a display module, an indication control module, a monitoring module, a measurement and control main body, a protection device, a DTU (digital television Unit), a CT/PT (computed tomography/Power Transformer), a dehumidifier, a cable temperature measurement fault sensor, a switch operation module, a power supply module and an optical fiber, wherein the measurement and control main body comprises a communication module, a CPU (Central processing Unit), an auxiliary contact I, an auxiliary contact II, a remote control module, an analog quantity input module, a dehumidification control module and a temperature measurement fault indication module, the display module, the indication control module and the switch operation module are all connected with the measurement and control main body, and the protection device is connected with the auxiliary contact I Strong electric field of large current, strong electromagnetic radiation, high-frequency noise and harmonic interference.)

1. The utility model provides a novel measurement and control device design is synthesized to looped netowrk cabinet intelligence, includes display module (1), instructs control module (2), monitor module (3), observes and controls main part, protection device (12), DTU (13), CT/PT (14), dehumidifier (15), cable temperature measurement fault sensor (16), switch operation module (17), power module (18) and optic fibre (19), its characterized in that: the optical fiber (19) is connected with the cable temperature measurement fault sensor (16), the measurement and control main body comprises a communication module (4), a CPU (5), a first auxiliary contact (6), a second auxiliary contact (7), a remote control module (8), an analog input module (9), a dehumidification control module (10) and a temperature measurement fault indication module (11), the display module (1), the indication control module (2) and the switch operation module (17) are all connected with the measurement and control main body, the protection device (12) is connected with the first auxiliary contact (6), the DTU (13) is connected with the second auxiliary contact (7) and the remote control module (8), the analog input module (9) is connected with a CT/14, the dehumidification control module (10) is connected with a dehumidifier (15), and the temperature measurement fault indication module (11) is connected with the cable temperature measurement fault sensor (16), the pin of the CPU (5) is connected with FLASH, JTAG, WIFI, EEPROM, SRAM, RTC, USB and DOG, the Wifi adopts UG5681 module to realize wireless communication with other nodes, the communication module (4) comprises RS232 and Ethernet, the CPU (5) is connected with RS232 and Ethernet, the RS232 interface uses MAX3232ESE chip, the Ethernet interface uses DM9000BI chip, the RS232 is connected with the monitoring module (3) through a serial port, the Ethernet is connected with the monitoring module (3) through Ethernet, the power module (18) adopts AC/DC power chip LH15-10D0512-04 to convert 220V alternating current into 5V and 12V voltage, 12V is reserved for standby, wherein the 5V voltage is converted into 3.3V through linear voltage stabilization chip MIC29502BU to supply power for other electric devices through the isolation power chip B0305 to supply power to the network interface 485, the 485 network interface uses an ADM2483 chip, 3.3V voltage is converted into 1.5V and 1.9V through a linear voltage regulation chip LM1117-ADJ to respectively supply power to Wifi and a CPU (5), and the JTAG interface accesses an internal register of the CPU (5) and equipment hung on a bus of the CPU (5).

2. The design of the novel intelligent comprehensive measurement and control device of the ring main unit according to claim 1 is characterized in that: the ADM2483 chip is an enhanced RS-485 transceiver with isolation, and comprises a three-channel isolator, a differential driver with three-state output and a differential receiver with three-state input, wherein the highest transmission rate of the ADM2483 chip can reach 500Kbps, a logic end is compatible with a 3V/5V working power supply, and a bus end is supplied with 5V power.

3. The design of the novel intelligent comprehensive measurement and control device of the ring main unit according to claim 1 is characterized in that: the MAX3232ESE chip is a serial port logic level conversion chip, the RS232 interface is a channel for communicating with external serial port equipment, and the DM9000BI chip is a completely integrated cost-effective industrial-grade 48-pin single-chip fast Ethernet controller which communicates with a main processor consisting of an RJ45 connector HR911103A and the external Ethernet equipment.

4. The design of the novel intelligent comprehensive measurement and control device of the ring main unit according to claim 1 is characterized in that: the display module (1) comprises a color screen liquid crystal, a running lamp, a warning lamp, a separating lamp, a closing lamp and nine operation keys: the device comprises a reset button, a confirmation button, a cancel button, an up button, a down button, a left button, a right button, an addition button and a subtraction button, and can be used for setting communication parameters, operation parameters, alarm parameters and the like of the device, thereby realizing the man-machine interaction of the device, displaying the real-time state of the ring main unit and improving the efficiency of safe operation.

5. The design of the novel intelligent comprehensive measurement and control device of the ring main unit according to claim 1 is characterized in that: the indication control module (2) comprises two control keys: separating brake, closing a floodgate, two knobs: the circuit breaker can be controlled locally to open and close the switch in a dehumidification and remote/local mode, so that normal operation of a circuit is guaranteed, and dehumidification can be switched to manual operation and automatic operation through the dehumidification knob.

6. The design of the novel intelligent comprehensive measurement and control device of the ring main unit according to claim 1 is characterized in that: the CPU (5) is an MK60DN512ZVLQ10 chip which is a main control chip of the device, has a clock frequency of 100M, an internal flash space 512k and a ram space 128k, and is provided with seven serial ports, and the input pin and the output pin can be configured.

7. The design of the novel intelligent comprehensive measurement and control device of the ring main unit according to claim 1 is characterized in that: the auxiliary contact I (6) and the auxiliary contact II (7) can solve the problems of complex layout and complex wiring in the cabinet through the aviation plug wire harness, the protection of the ring main unit and the DTU. The first auxiliary contact (6) and the second auxiliary contact (7) comprise an opening: the tripping operation comprises tripping permission, closing permission, remote closing, remote tripping, a tripping position, low-pressure locking, an isolation position, a grounding position and the like, and comprises the following steps of: fault output, a remote position, a low-pressure locking position, switch closing position, short-circuit fault and low-pressure alarm.

8. The design of the novel intelligent comprehensive measurement and control device of the ring main unit according to claim 7 is characterized in that: the pencil is for observing and controling main part and outside other modules, all connects through the aviation plug pencil, and the wiring is convenient, the possibility greatly reduced of makeing mistakes.

9. The design of the novel intelligent comprehensive measurement and control device of the ring main unit according to claim 1 is characterized in that: the dehumidification control module (10) has two dehumidification functions, comprises an intelligent dehumidification monitoring function, and can switch between manual dehumidification and automatic dehumidification through a dehumidification knob; the temperature and humidity of a meter box and the temperature and humidity of the room temperature of the cable can be monitored, and intelligent dehumidification is realized; and the real-time state is displayed on the liquid crystal, so that the method is visual and convenient.

10. The design of the novel intelligent comprehensive measurement and control device of the ring main unit according to claim 1 is characterized in that: the temperature measurement fault indication module (11) is used for collecting fault signals of A, B, C phases of a line and feeding back overheating or normal states.

Technical Field

The invention relates to the technical field of power generation protection, in particular to a novel intelligent comprehensive measurement and control device of a ring main unit.

Background

Inside the looped netowrk cabinet, the secondary equipment of detection, control is many kinds, has protection device, DTU, dehumidifier, cable fault sensor in the instrument room, and various electrical apparatus wiring in addition, such as CT/PT wiring, switch operating device's wiring etc. walk the line complicacy in the cabinet, and the production task work load of producer is huge to material cost, cost of labor cost overhead are very big. Moreover, many states of the detection and control equipment can only be checked in situ, and the detection and control equipment does not have the function of remotely transmitting to an auxiliary monitoring background, so that the safety operation of the equipment is adversely affected. Therefore, an intelligent comprehensive measurement and control device which can reduce the production workload of a manufacturer, save the cost, promote the stable operation of the ring main unit, promote the convenience of operation and maintenance, improve the operation reliability and the power supply quality of a power distribution network, reduce the labor intensity and ensure the power utilization safety needs to be developed and designed.

Disclosure of Invention

The invention aims to provide a novel design of an intelligent comprehensive measurement and control device of a ring main unit, which aims to solve the problems that wiring in the ring main unit is complex, the material cost and labor cost are high, the ring main unit does not have the function of remotely transmitting to an auxiliary monitoring background, and the safe operation of equipment is adversely affected.

In order to achieve the purpose, the invention provides the following technical scheme: a novel ring main unit intelligent comprehensive measurement and control device design comprises a display module, an indication control module, a monitoring module, a measurement and control main body, a protection device, a DTU, a CT/PT, a dehumidifier, a cable temperature measurement fault sensor, a switch operation module, a power supply module and an optical fiber, wherein the optical fiber 19 is connected with the cable temperature measurement fault sensor 16, the measurement and control main body comprises a communication module, a CPU, a first auxiliary contact, a second auxiliary contact, a remote control module, an analog quantity input module, a dehumidification control module and a temperature measurement fault indication module, the display module, the indication control module and the switch operation module are all connected with the measurement and control main body, the protection device is connected with the first auxiliary contact, the DTU is connected with the second auxiliary contact and the remote control module, the analog quantity input module is connected with the CT/PT, the dehumidification control module is connected with the dehumidifier, the temperature measurement fault indication module is connected with a cable temperature measurement fault sensor, pins of a CPU are connected with FLASH, JTAG, WIFI, EEPROM, SRAM, RTC, USB and DOG, Wifi adopts a UG5681 module to realize wireless communication with other nodes, the communication module comprises RS232 and Ethernet, the CPU is connected with RS232 and Ethernet, an MAX3232ESE chip is used for the RS232 interface, a DM9000BI chip is used for the Ethernet interface, the RS232 is connected with the monitoring module through a serial port, the Ethernet is connected with the monitoring module through Ethernet, the power supply module adopts an AC/DC power supply chip LH15-10D0512-04 to convert 220V alternating current into 5V and 12V voltage, 12V is reserved for standby, wherein 5V voltage is converted into 3.3V through a linear voltage stabilizing chip 29502BU to supply power to other electric devices of an Ethernet network interface circuit, 3.3V voltage provides 5V isolation power supply for an MIC through an isolation power supply chip B0305, the 485 network interface uses an ADM2483 chip, 3.3V voltage is converted into 1.5V and 1.9V through a linear voltage regulation chip LM1117-ADJ to respectively supply power to Wifi and a CPU, and the JTAG interface accesses an internal register of the CPU and equipment hung on a CPU bus.

Preferably, the ADM2483 chip is an enhanced RS-485 transceiver with isolation, and comprises a three-channel isolator, a differential driver with tri-state output and a differential receiver with tri-state input, wherein the highest transmission rate can reach 500Kbps, a logic end is compatible with a 3V/5V working power supply, and a bus end is supplied with 5V power.

Preferably, the MAX3232ESE chip is a serial port logic level conversion chip, the RS232 interface is a channel for communicating with an external serial port device, and the DM9000BI chip is a fully integrated cost-effective Industrial-grade 48-pin single-chip fast ethernet controller, which communicates with a main processor formed by an RJ45 connector HR911103A and the external ethernet device.

Preferably, the display module comprises a color screen liquid crystal, a running light, a warning light, a separating light, a closing light and nine operation keys: the device comprises a reset button, a confirmation button, a cancel button, an up button, a down button, a left button, a right button, an addition button and a subtraction button, and can be used for setting communication parameters, operation parameters, alarm parameters and the like of the device, thereby realizing the man-machine interaction of the device, displaying the real-time state of the ring main unit and improving the efficiency of safe operation.

Preferably, the indication control module includes two control keys: separating brake, closing a floodgate, two knobs: the circuit breaker can be controlled locally to open and close the switch in a dehumidification and remote/local mode, so that normal operation of a circuit is guaranteed, and dehumidification can be switched to manual operation and automatic operation through the dehumidification knob.

The CPU is an MK60DN512ZVLQ10 chip which is a main control chip of the device, the clock frequency of 100M, the internal flash space 512k and the ram space 128k are provided with seven serial ports, and the input pin and the output pin can be configured.

The first auxiliary contact and the second auxiliary contact can solve the problems of complex layout and complex wiring in the cabinet through the aviation plug wire harness, the protection of the ring main unit and the DTU. The first auxiliary contact and the second auxiliary contact comprise an opening: the tripping operation comprises tripping permission, closing permission, remote closing, remote tripping, a tripping position, low-pressure locking, an isolation position, a grounding position and the like, and comprises the following steps of: fault output, a remote position, a low-pressure locking position, switch closing position, short-circuit fault and low-pressure alarm.

The pencil is for observing and controling main part and outside other modules, all connects through the aviation plug pencil, and the wiring is convenient, the possibility greatly reduced of makeing mistakes.

The dehumidification control module has two dehumidification functions, comprises an intelligent dehumidification monitoring function, and can switch between manual dehumidification and automatic dehumidification through the dehumidification knob; the temperature and humidity of a meter box and the temperature and humidity of the room temperature of the cable can be monitored, and intelligent dehumidification is realized; and the real-time state is displayed on the liquid crystal, so that the method is visual and convenient.

The temperature measurement fault indication module is used for collecting fault signals of A, B, C phases of a line and feeding back overheating or normal states.

Compared with the prior art, the invention has the beneficial effects that:

1) the invention is arranged in the ring main unit, is provided with a multifunctional panel and a liquid crystal, and can comprehensively display various real-time states of the current ring main unit, such as switch analog indication, position, voltage and current, cable temperature, temperature and humidity, dehumidification information, and various operation and alarm information.

2) The invention has a plurality of open signals, the resolution of event sequence record (SOE) is less than or equal to 2ms through DC24V/48V photoelectric isolation, the remote signaling anti-shake time is 10 ms-1000 ms, the invention has a plurality of open signals, the output mode is as follows: active output or empty contact, pulse output, the pulse width 0 ~ 60 seconds can set up, output contact capacity: DC 24V/16A.

3) The device can be connected with a monitoring background, supports an IEC101/IEC104 protocol, can perform time synchronization, measurement quantity reading, remote signaling quantity reading, SOE event reading and historical data checking on the device through the monitoring background, can perform switching on and off of a remote control device, and can read a wave recording waveform when the device fails.

4) The invention can record the voltage, the current and the switch position of the line when detecting the voltage and current faults, the number of the recorded wave points is not less than 96 points, and the recorded wave format is a comtrade format, thereby facilitating the working personnel to check and analyze the running state of the ring main unit.

5) The invention has the self-checking function of the device, the controller carries out self-checking on the key hardware loop and the fixed value area when the power is on and started, and the controller carries out self-checking at fixed time when the controller runs normally. The self-checking object comprises a fixed value area, a power supply system, a control circuit, an output circuit, an analog signal sampling channel, an E2PROM, an energy storage capacitor or a storage battery and the like. When the self-checking is abnormal, the abnormal alarm indicator lamp is lightened, the tripping and closing loop is locked, and alarm information is uploaded.

6) The invention has the advantages that the application occasion is the inside of the power distribution ring main unit, the electromagnetic interference is strong, the environment is severe, the device adopts a high-standard design, and the interference problems of high-voltage and high-current strong electric fields, strong electromagnetic radiation, high-frequency noise and harmonics in the switch cabinet can be solved.

Drawings

FIG. 1 is a logic block diagram of the system of the present invention;

FIG. 2 is a hardware logic block diagram of the present invention;

fig. 3 is a layout diagram of the terminal of the present invention.

In the figure: the system comprises a display module 1, an indication control module 2, a monitoring module 3, a communication module 4, a CPU5, an auxiliary contact I6, an auxiliary contact II 7, a remote control module 8, an analog input module 9, a dehumidification control module 10, a temperature measurement fault indication module 11, a protection device 12, a DTU13, a CT/PT14, a dehumidifier 15, a cable temperature measurement fault sensor 16, a switch operation module 17, a power supply module 18 and an optical fiber 19.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Example (b):

referring to fig. 1-3, the present invention provides a technical solution: a novel intelligent comprehensive measurement and control device of a ring main unit comprises a display module 1, an indication control module 2, a monitoring module 3, a measurement and control main body, a protection device 12, a DTU13, a CT/PT14, a dehumidifier 15, a cable temperature measurement fault sensor 16, a switch operation module 17, a power supply module 18 and an optical fiber 19, wherein the optical fiber 19 is connected with the cable temperature measurement fault sensor 16, the measurement and control main body comprises a communication module 4, a CPU5, an auxiliary contact I6, an auxiliary contact II 7, a remote control module 8, an analog quantity input module 9, a dehumidification control module 10 and a temperature measurement fault indication module 11, the display module 1, the indication control module 2 and the switch operation module 17 are all connected with the measurement and control main body, the protection device 12 is connected with the auxiliary contact I6, the DTU13 is connected with the auxiliary contact II 7 and the remote control module 8, the analog quantity input module 9 is connected with the CT/PT14, the dehumidification control module 10 is connected with the dehumidifier 15, the temperature measurement fault indication module 11 is connected with the cable temperature measurement fault sensor 16, pins of the CPU5 are connected with FLASH, JTAG, WIFI, EEPROM, SRAM, RTC, USB and DOG, the Wifi adopts a UG5681 module to realize wireless communication with other nodes, the communication module 4 comprises RS232 and Ethernet, the CPU5 is connected with RS232 and Ethernet, an MAX3232ESE chip is used for the RS232 interface, a 900DM 0 9000BI chip is used for the Ethernet interface, the RS232 is connected with the monitoring module 3 through a serial port, the Ethernet is connected with the monitoring module 3 through Ethernet, the power supply module 18 adopts an AC/DC power supply chip LH15-10D0512-04 to convert 220V alternating current into 5V and 12V voltage, 12V is reserved for standby, wherein the 5V voltage is converted into 3.3V through a linear voltage stabilizing chip MIC29502BU to be supplied to other electric devices of an Ethernet network interface circuit, the 3.3V voltage provides a 5V isolation power supply to supply power to a 485 network interface through an isolation power supply chip B0305, the 485 network interface uses an ADM2483 chip, the 3.3V voltage is converted into 1.5V and 1.9V through a linear voltage regulation chip LM1117-ADJ, the power is respectively supplied to Wifi and CPU5, and the JTAG interface accesses an internal register of the CPU5 and equipment hung on a CPU5 bus.

The ADM2483 chip is an enhanced RS-485 transceiver with isolation, and comprises a three-channel isolator, a differential driver with tri-state output and a differential receiver with tri-state input, wherein the highest transmission rate of the ADM2483 chip can reach 500Kbps, a logic end is compatible with a 3V/5V working power supply, and a bus end is supplied with 5V power.

The MAX3232ESE chip is a serial port logic level conversion chip, the RS232 interface is a channel for communicating with external serial port equipment, and the DM9000BI chip is a completely integrated cost-effective Industrial-grade 48-pin single-chip fast Ethernet controller which communicates with a main processor consisting of an RJ45 connector HR911103A and the external Ethernet equipment.

The display module 1 comprises a color screen liquid crystal, an operation lamp, a warning lamp, a position dividing lamp, a position closing lamp and nine operation keys: the device comprises a reset button, a confirmation button, a cancel button, an up button, a down button, a left button, a right button, an addition button and a subtraction button, and can be used for setting communication parameters, operation parameters, alarm parameters and the like of the device, thereby realizing the man-machine interaction of the device, displaying the real-time state of the ring main unit and improving the efficiency of safe operation.

The indication control module 2 comprises two control keys: separating brake, closing a floodgate, two knobs: the manual/automatic and remote/local dehumidification can locally control the opening and closing of the circuit breaker to ensure the normal operation of the circuit, and the dehumidification can be switched to manual and automatic through the dehumidification knob.

The CPU5 is an MK60DN512ZVLQ10 chip which is a main control chip of the device, has a clock frequency of 100M, an internal flash space 512k and a ram space 128k, has seven serial ports, and is provided with an input pin and an output pin which are configurable.

The first auxiliary contact 6 and the second auxiliary contact 7 can solve the problems of complex layout and complex wiring in the cabinet through the aviation plug wire harness, the protection of the ring main unit and the DTU. The first auxiliary contact 6 and the second auxiliary contact 7 comprise an opening: the tripping operation comprises tripping permission, closing permission, remote closing, remote tripping, a tripping position, low-pressure locking, an isolation position, a grounding position and the like, and comprises the following steps of: fault output, a remote position, a low-pressure locking position, switch closing position, short-circuit fault and low-pressure alarm.

The pencil is for observing and controling main part and outside other modules, all connects through the aviation plug pencil, and the wiring is convenient, the possibility greatly reduced of makeing mistakes.

The dehumidification control module 10 has two dehumidification functions, comprises an intelligent dehumidification monitoring function, and can switch between manual dehumidification and automatic dehumidification through a dehumidification knob; the temperature and humidity of a meter box and the temperature and humidity of the room temperature of the cable can be monitored, and intelligent dehumidification is realized; and the real-time state is displayed on the liquid crystal, so that the method is visual and convenient.

The temperature measurement fault indication module 11 is used for collecting fault signals of A, B, C phases of a line and feeding back overheating or normal states.

The working principle is as follows: this device is installed on the door panel in the looped netowrk cabinet, through RS232 serial ports and the master control unit communication in communication module 4, can modify the parameter of device, also can controlling means looped netowrk cabinet divide-shut brake etc. the device passes through IEC101 IEC104 communication protocol, with the communication of monitoring module 3, fortune dimension personnel can pass through monitoring module 3, the state of real-time check looped netowrk cabinet, the operation of control looped netowrk cabinet, auxiliary contact one 6 and auxiliary contact two 7 (telecommand) of this device, through the aviation plug pencil and protection device 12, DTU13 is mutual, the telecommand that mainly contains has: the device collects analog quantity of voltage and current of CT/PT14 through an aerial plug wire harness, calculates and processes the analog quantity inside a CPU5, and gives a real-time measured value.

While there have been shown and described the fundamental principles and essential features of the invention and advantages thereof, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.