阅读说明：本技术 多低压柜变电站 (Multi-low-voltage cabinet transformer substation ) 是由 武文钊 刘卫东 罗同浪 吴昌建 王天赐 于 2021-06-09 设计创作，主要内容包括：一种多低压柜变电站包括容纳高压柜的高压室、低压室、变压器、多个低压柜及电源切换柜,低压室容纳多个低压柜,变压器与高压柜及多个低压柜电连接,用于将高压柜提供的高压电转换为低压电,变压器包括多个低压套管,多个低压套管用于与多个低压柜连接,电源切换柜与多个低压柜电连接,用于控制多个低压柜与变压器的连通及断开。上述多低压柜变电站将多个低压柜与一个变压器电连接,通过电源切换柜控制多个低压柜与变压器的连通及断开,在通过多个低压柜是否提供电能至用电设备或用电系统的同时,由于多个低压柜与变压器布置在同一位置,结构紧凑,不仅节约了占地面积,也便于变电站的维护及铺设电缆。(The utility model provides a many low-voltage cabinet transformer substations are including the high-voltage chamber that holds the high-voltage cabinet, the low-voltage chamber, a transformer, a plurality of low-voltage cabinets and power switching cabinet, the low-voltage chamber holds a plurality of low-voltage cabinets, the transformer is connected with high-voltage cabinet and a plurality of low-voltage cabinet electricity, a high-tension electricity conversion for providing with the high-voltage cabinet is low-voltage electricity, the transformer includes a plurality of low-voltage bushings, a plurality of low-voltage bushings are used for being connected with a plurality of low-voltage cabinets, the power switching cabinet is connected with a plurality of low-voltage cabinet electricity, a intercommunication and the disconnection. Above-mentioned many low-voltage cabinet transformer substations are connected a plurality of low-voltage cabinets and a transformer electricity, through the intercommunication and the disconnection of a plurality of low-voltage cabinets of power switch cabinet control and transformer, when providing electric energy to consumer or power consumption system through a plurality of low-voltage cabinets, because a plurality of low-voltage cabinets and transformer arrange in same position, compact structure has not only practiced thrift area, also is convenient for the maintenance of transformer substation and lays the cable.)

1. The utility model provides a many low-voltage cabinet transformer substations, is including the high-voltage chamber, the low-voltage chamber and the transformer that hold the high-voltage cabinet, its characterized in that still includes a plurality of low-voltage cabinets and power switching cabinet, the low-voltage chamber holds a plurality of low-voltage cabinets, the transformer with the high-voltage cabinet reaches a plurality of low-voltage cabinet electricity are connected for convert the high-tension electricity that the high-voltage cabinet provided into low-voltage electricity, the transformer includes a plurality of low-voltage bushing, a plurality of low-voltage bushing are used for being connected with a plurality of low-voltage cabinets, the power switching cabinet with a plurality of low-voltage cabinet electricity are connected, are used for controlling a plurality ofly the low-voltage cabinet with the intercommunication and the disconnection of transformer.

2. The multi-low-voltage-cabinet substation of claim 1, further comprising a housing, wherein the high-voltage chamber and the low-voltage chamber are contained in the housing, the transformer is disposed outside the housing, and three sides of the transformer are enclosed by the high-voltage chamber and the low-voltage chamber.

3. The multi-low-voltage-cabinet substation of claim 2, wherein the plurality of low-voltage cabinets and the power switching cabinet are arranged on two side edges of the transformer in an L shape.

4. The multi-low-voltage-cabinet substation of claim 1, wherein the plurality of low-voltage cabinets comprises a first low-voltage cabinet and a second low-voltage cabinet, the plurality of low-voltage bushings comprises a first low-voltage bushing and a second low-voltage bushing, the first low-voltage bushing is connected with the first low-voltage cabinet, and the second low-voltage bushing is connected with the second low-voltage cabinet.

5. The multi-low-voltage-cabinet substation of claim 4, wherein the first low-voltage cabinet is a low-voltage cabinet for wind power, and the second low-voltage cabinet is a low-voltage cabinet for photovoltaic.

6. The multi-low-voltage-cabinet substation according to claim 5, wherein a winding is adopted for each high voltage phase in the transformer, a low-voltage winding and an auxiliary winding led out from the low-voltage winding are adopted for each low voltage phase in the transformer, the rated voltage of the transformer low voltage connected with the wind power low-voltage cabinet is AC690V, the low-voltage winding adopts yn wiring mode, the rated voltage of the transformer low voltage connected with the photovoltaic low-voltage cabinet is AC800V, and the low-voltage winding adopts y wiring mode.

7. The multi-low-voltage cabinet substation of claim 6, wherein the voltages output by the auxiliary winding corresponding to the low-voltage cabinet for wind power through the auxiliary bushing are AC380V and AC 220V.

8. The multi-low-voltage-cabinet transformer substation according to claim 1, wherein each low-voltage cabinet is provided therein with a main incoming line breaker, a surge protector, a molded case circuit breaker, a current transformer and a voltage transformer, and the power switching cabinet is provided therein with a power switching device connected to the main incoming line breaker of the low-voltage cabinet for switching whether the plurality of low-voltage cabinets are communicated with the transformer according to a user operation.

9. The multi-low-voltage-cabinet transformer substation according to claim 8, wherein a measurement and control device communicatively connected to a remote control device is further disposed in the power switching cabinet, the measurement and control device is electrically connected to the main incoming line circuit breaker and the current transformers in the low-voltage cabinets, and the measurement and control device is configured to collect current signals sensed by the current transformers in the plurality of low-voltage cabinets and transmit the current signals to the remote control device, so that the remote control device controls whether to activate the main incoming line circuit breaker in the corresponding low-voltage cabinet according to the current signals and a preset current.

10. The multi-low-voltage cabinet transformer substation of claim 1, wherein a high-voltage vacuum circuit breaker, a high-voltage current transformer, a disconnecting switch, a grounding switch and a protection control device are arranged in the high-voltage cabinet, each component in the high-voltage cabinet is connected with a high-voltage bushing on the transformer through a bus, the high-voltage current transformer collects a high-voltage current signal and transmits the high-voltage current signal to the protection control device, and the protection control device controls the switching-on and switching-off of the vacuum circuit breaker to realize the protection of the transformer.

Technical Field

The invention relates to a transformer substation, in particular to a multi-low-voltage cabinet transformer substation.

Background

Before the electric energy uses, generally all can have the process of converting high-tension electricity into low-tension electricity through the transformer, and different low-tension rooms need to be set up according to service environment difference, like wind-powered electricity generation box-type substation and photovoltaic box-type substation etc.. And arrange a plurality of transformer substations simultaneously in same position, if wind-powered electricity generation box-type substation with photovoltaic box-type substation, a plurality of transformer substations all separately build, so for the area of transformer substation is big, and has the shortcoming that the maintenance is inconvenient, high tension cable need long distance to be laid many times.

Disclosure of Invention

In view of the above, there is a need for a multi-low voltage cabinet transformer substation with small floor space and convenient maintenance and cable laying.

The utility model provides a many low-voltage cabinet transformer substations, is including the high-voltage chamber, the low-voltage chamber and the transformer that hold the high-voltage cabinet, still includes a plurality of low-voltage cabinets and power switching cabinet, the low-voltage chamber holds a plurality of low-voltage cabinets, the transformer with the high-voltage cabinet reaches a plurality of low-voltage cabinet electricity is connected for convert the high-tension electricity that the high-voltage cabinet provided into low-tension electricity, the transformer includes a plurality of low-voltage bushing, a plurality of low-voltage bushing are used for being connected with a plurality of low-voltage cabinets, the power switching cabinet with a plurality of low-voltage cabinet electricity are connected, are used for controlling a plurality ofly the low-voltage cabinet with the intercommunication and the disconnection of transformer.

Furthermore, the multi-low-voltage cabinet transformer substation also comprises a shell, the high-voltage chamber and the low-voltage chamber are contained in the shell, the transformer is arranged outside the shell, and three side edges of the transformer are surrounded by the high-voltage chamber and the low-voltage chamber.

Furthermore, the plurality of low-voltage cabinets and the power supply switching cabinet are arranged on two side edges of the transformer in an L shape.

Furthermore, the plurality of low-voltage cabinets comprise a first low-voltage cabinet and a second low-voltage cabinet, the plurality of low-voltage sleeves comprise a first low-voltage sleeve and a second low-voltage sleeve, the first low-voltage sleeve is connected with the first low-voltage cabinet, and the second low-voltage sleeve is connected with the second low-voltage cabinet.

Furthermore, the first low-voltage cabinet is a low-voltage cabinet for wind power, and the second low-voltage cabinet is a low-voltage cabinet for photovoltaic.

Furthermore, each phase of high voltage in the transformer adopts a winding, each phase of low voltage in the transformer adopts a low-voltage winding and an auxiliary winding led out from the low-voltage winding, the rated voltage of the transformer low voltage connected with the wind power low-voltage cabinet is AC690V, the low-voltage winding adopts a yn wiring mode, the rated voltage of the transformer low voltage connected with the photovoltaic low-voltage cabinet is AC800V, and the low-voltage winding adopts a y wiring mode.

Further, the voltage output by the auxiliary winding corresponding to the low-voltage cabinet for wind power through the auxiliary sleeve is AC380V and AC 220V.

Furthermore, each be equipped with main inlet wire circuit breaker, surge protector, moulded case circuit breaker, current transformer and voltage transformer in the low-voltage cabinet, be provided with power conversion equipment in the power switching cabinet, power conversion equipment is connected with the main inlet wire circuit breaker in the low-voltage cabinet for whether communicate with the transformer according to user's operation switching a plurality of low-voltage cabinets.

Further, still be provided with the measurement and control device with remote control device communication connection in the power switching cabinet, measurement and control device is connected with main inlet wire circuit breaker and the current transformer electricity in the low-voltage cabinet, measurement and control device is used for gathering the current signal of the current transformer sensing in a plurality of low-voltage cabinets and with current signal transmission extremely remote control device, so that whether remote control device starts the main inlet wire circuit breaker in the corresponding low-voltage cabinet according to current signal and predetermine current control.

Furthermore, a high-voltage vacuum circuit breaker, a high-voltage current transformer, an isolating switch, a grounding switch and a protection control device are arranged in the high-voltage cabinet, each component in the high-voltage cabinet is connected with a high-voltage sleeve on the transformer through a bus, the high-voltage current transformer collects high-voltage current signals and transmits the high-voltage current signals to the protection control device, and the protection control device controls the opening and closing of the vacuum circuit breaker to realize the protection of the transformer.

According to the multi-low-voltage cabinet transformer substation, the plurality of low-voltage cabinets are electrically connected with the transformer, the plurality of low-voltage cabinets are controlled through the power switching cabinet, the low-voltage cabinets are communicated with and disconnected from the transformer, electric energy is supplied to electric equipment or an electric system through the plurality of low-voltage cabinets, and the plurality of low-voltage cabinets and the transformer are arranged at the same position, so that the structure is compact, the occupied area is saved, and the transformer substation is convenient to maintain and lay cables.

Drawings

Fig. 1 is a layout diagram of the internal structure of a multi-low-voltage cabinet substation provided by the invention.

Fig. 2 is a front view of the multiple low-voltage cabinet substation of fig. 1.

Fig. 3 is a right side view of the multiple low-voltage cabinet substation of fig. 1.

Fig. 4 is a left side view of the multiple low-voltage cabinet substation of fig. 1.

Description of the main elements

Multi-low-voltage cabinet transformer substation	100
		Transformer device	10
Low-voltage bushing	11
		First low-voltage sleeve	12
Second low-voltage bushing	13
		Low-voltage cabinet	20
First low-voltage cabinet	21
		Second low-voltage cabinet	22
Outer casing	30
		High-pressure chamber	40
High-voltage board	50
		Power supply switching cabinet	60
High-voltage vacuum circuit breaker	51
		High-voltage current transformer	52
Isolating switch	53
		Grounding switch	54

The following detailed description will further illustrate the invention in conjunction with the above-described figures.

Detailed Description

The present invention will be described in further detail below with reference to the accompanying drawings.

In order that the above objects, features and advantages of the present invention can be more clearly understood, a detailed description of the present invention will be given below with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth to provide a thorough understanding of the present invention, and the described embodiments are merely a subset of the embodiments of the present invention, rather than a complete embodiment. 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.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Referring to fig. 1 to 4, the present invention provides a multi-low-voltage-cabinet substation 100 for connecting a plurality of low-voltage cabinets 20 through a transformer 10 to integrate the plurality of low-voltage cabinets 20, so as to facilitate the overhaul and maintenance of the substation while reducing the floor area of the substation.

The multi-low-voltage-cabinet substation 100 includes a housing 30, a high-voltage chamber 40, a high-voltage cabinet 50, a low-voltage chamber (not shown), a plurality of low-voltage cabinets 20, a transformer 10, and a power switching cabinet 60. The high pressure chamber 40 is disposed in the housing 30, the high pressure chamber 40 accommodates the high voltage cabinet 50 therein, and the high voltage cabinet 50 is used for providing high voltage electricity. The low-voltage chamber is disposed in the housing 30, and the low-voltage chamber accommodates the plurality of low-voltage cabinets 20, and the plurality of low-voltage cabinets 20 are configured to output electric energy to electric devices or electric systems. The transformer 10 is disposed outside the housing 30, and three sides of the transformer 10 are surrounded by the high voltage chamber 40 and the low voltage chamber. In one embodiment, the low-voltage cabinets 20 and the power switching cabinet 60 are disposed on two sides of the transformer 10 in an L-shape. The transformer 10 is electrically connected to the high-voltage board 50 and the low-voltage boards 20, and is configured to convert high-voltage power provided by the high-voltage board 50 into low-voltage power. The transformer 10 comprises a plurality of low voltage bushings 11, the plurality of low voltage bushings 11 being adapted to be connected to a plurality of low voltage cabinets 20. The power switch cabinet 60 is disposed in the low voltage chamber and electrically connected to the plurality of low voltage cabinets 20, and is configured to control connection and disconnection between the plurality of low voltage cabinets 20 and the transformer 10, so as to control whether the plurality of low voltage cabinets 20 provide power to a power-consuming device or a power-consuming system.

Specifically, the high voltage cabinet 50 is connected to a high voltage bus through the incoming and outgoing terminals. The high-voltage transformer protection device is characterized in that a high-voltage vacuum circuit breaker 51, a high-voltage current transformer 52, an isolating switch 53, a grounding switch 54 and a protection control device (not shown) are arranged in the high-voltage cabinet 50, all the components in the high-voltage cabinet 50 are connected with a high-voltage bushing on the transformer 10 through a bus, the high-voltage current transformer 52 collects high-voltage current signals and transmits the high-voltage current signals to the protection control device, and the protection control device controls the switching-on and switching-off of the vacuum circuit breaker to realize the protection of the transformer 10.

And a cabinet door of the high-voltage cabinet 50 is provided with an electrified display and an electromagnetic lock, and the electrified display is connected with the high-voltage sleeve and the electromagnetic lock. The electrified display is used for detecting whether the high-voltage bushing is electrified and outputting the electromagnetic lock with the corresponding signal value, the electromagnetic lock generates an unlocking impermissible signal according to the electrified signal of the high-voltage bushing transmitted by the electrified display, so that the electromagnetic lock cannot be opened, and therefore a worker is prevented from entering the high-voltage cabinet 50 in an electrified state. The electromagnetic lock generates an unlocking allowing signal according to the uncharged signal of the high-voltage bushing transmitted by the charged display, so that the electromagnetic lock is in an openable state, and a worker can enter the high-voltage cabinet 50 in the uncharged state.

The low-voltage cabinets 20 are connected to a low-voltage bus through inlet and outlet terminals. The plurality of low-voltage cabinets 20 include a first low-voltage cabinet 21 and a second low-voltage cabinet 22. The plurality of low pressure bushings 11 includes a first low pressure bushing 12 and a second low pressure bushing 13. The first low-voltage bushing 12 is connected to a first low-voltage cabinet 21, and the second low-voltage bushing 13 is connected to a second low-voltage cabinet 22. The first low-voltage cabinet 21 is a low-voltage cabinet for wind power, and the second low-voltage cabinet 22 is a low-voltage cabinet for photovoltaic.

One winding is used for each phase of high voltage in the transformer 10, and a low voltage winding and an auxiliary winding led out from the low voltage winding are used for each phase of low voltage in the transformer 10. The low-voltage rated voltage of the transformer 10 connected with the low-voltage cabinet 20 for wind power is AC690V, and a yn wiring mode is adopted for a low-voltage winding; the rated voltage of the transformer 10 connected with the photovoltaic low-voltage cabinet 20 is AC800V, and the low-voltage winding adopts a y-wiring mode. An auxiliary winding of the transformer 10 connected to the low-voltage cabinet 20 is connected to the low-voltage bushing 11 through a lead, and the auxiliary winding outputs low voltage through the low-voltage bushing 11. The auxiliary winding corresponding to the low-voltage cabinet 20 for wind power outputs an AC380V line voltage and an AC220V phase voltage through an auxiliary bushing.

A main incoming line breaker, a surge protector, a molded case circuit breaker, a current transformer and a voltage transformer are arranged in the photovoltaic low-voltage cabinet 20 so as to realize electrical protection of the photovoltaic low-voltage part of the transformer 10. A main incoming line breaker, a surge protector, a molded case circuit breaker, a current transformer and a voltage transformer are arranged in the low-voltage cabinet 20 for wind power, so that the electrical protection of the wind power low-voltage part of the transformer 10 is realized.

In one embodiment, the power switching cabinet 60 is provided with a circuit breaker and a power conversion device. The circuit breaker is a plurality of, including moulded case circuit breaker and miniature circuit breaker etc.. The power conversion device is connected with a main incoming line breaker in the low-voltage cabinets 20 and used for switching whether the low-voltage cabinets 20 are communicated with the transformer 10 or not according to user operation. In another embodiment, a measurement and control device in communication connection with a remote control device is further disposed in the power switching cabinet 60, and the measurement and control device is electrically connected to the main incoming line breaker and the current transformer in the low voltage cabinet 20. The measurement and control device is used for gathering the current signal of the current transformer sensing in a plurality of low-voltage cabinet 20 and with current signal transmission extremely remote control device, so that whether remote control device starts the main inlet wire circuit breaker in the corresponding low-voltage cabinet 20 according to current signal and current control that predetermines to whether remote control low-voltage cabinet 20 supplies power for consumer or electric system, protects consumer or electric system.

The multi-low-voltage cabinet transformer substation 100 electrically connects a plurality of low-voltage cabinets 20 with one transformer 10, controls the connection and disconnection of the plurality of low-voltage cabinets 20 with the transformer 10 through the power switching cabinet 60, and when the plurality of low-voltage cabinets 20 supply electric energy to electric equipment or an electric system, the plurality of low-voltage cabinets 20 and the transformer 10 are arranged at the same position, so that the structure is compact, the occupied area is saved, and the maintenance and the cable laying of the transformer substation are facilitated.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes 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. Any reference sign in a claim should not be construed as limiting the claim concerned. Furthermore, it is obvious that the word "comprising" does not exclude other elements or steps, and the singular does not exclude the plural. Several units or means recited in the apparatus claims may also be embodied by one and the same item or means in software or hardware. The terms first, second, etc. are used to denote names, but not any particular order.

Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.