CN214380110U - PCS cabinet power supply system - Google Patents

Abstract

The utility model discloses a PCS cabinet power supply system, which relates to the field of power supply, and comprises a PCS cabinet, an AC main breaker, a bidirectional converter module group, a breaker module group, a power distribution cabinet and a high-voltage box; the AC main breaker is arranged in the PCS cabinet, connected with the mains supply and used for controlling the on-off of the mains supply; the bidirectional converter module group is arranged in the PCS cabinet, is connected with the output end of the AC main circuit breaker and is used for converting AC and DC; the breaker module group is arranged in the PCS cabinet and is connected with the bidirectional converter module group; the power distribution cabinet is provided with a miniature circuit breaker, and the miniature circuit breaker is connected with the input end of the AC main circuit breaker; the high-voltage box is provided with a battery cluster which is used for storing electric energy; the main control module is arranged in the PCS cabinet and is respectively connected with the AC main circuit breaker, the bidirectional converter module group, the miniature circuit breaker and the high-voltage box. PCS cabinet power supply system can reduce the risk of electric shock and can practice thrift the cost.

Description

PCS cabinet power supply system

Technical Field

The utility model relates to a mains operated field, in particular to PCS cabinet power supply system.

Background

Lithium batteries and lead storage batteries are used as one of the core components of the energy storage System, so that the energy center of the energy storage System and the PCS (Power Conversion System) are used as direct current and alternating current bidirectional Conversion equipment, and the Power supply safety and reliability are particularly important.

The existing PCS power supply scheme is that a main switch of a control system is arranged on a power distribution cabinet, and a plurality of alternating current circuit breakers are arranged in the PCS cabinet. For the normal operating that does not influence the switch board, the debugging personnel do not break off the switch board earlier and go up the master switch, but alternating current circuit breaker and direct current breaker in the direct disconnection PCS cabinet, and each alternating current circuit breaker input side and three-phase copper bar of PCS cabinet all are electrified like this, have the potential safety hazard, and can't in time cut off the power supply when meetting emergency and need cut off the power supply, need to reach the switch board and just can break the master switch. And the PCS cabinet needs to connect a plurality of groups of 185 square millimeter electric wires from the power distribution cabinet and install a plurality of paths of alternating current circuit breakers, so that the installation cost of the system is high.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a PCS cabinet power supply system can reduce the electric shock risk when debugging and can practice thrift the cost.

According to the utility model discloses PCS cabinet power supply system, include: the system comprises a PCS cabinet, an alternating current main circuit breaker, a bidirectional converter module group, a circuit breaker module group, a power distribution cabinet and a high-voltage box; the AC main breaker is arranged in the PCS cabinet, connected with a mains supply and used for controlling the on-off of the mains supply; the bidirectional converter module group is arranged in the PCS cabinet, is connected with the output end of the AC main circuit breaker and is used for converting AC power and DC power; the breaker module group is arranged in the PCS cabinet and is connected with the bidirectional converter module group; the power distribution cabinet is provided with a miniature circuit breaker, and the miniature circuit breaker is connected with the input end of the AC main circuit breaker; the high-voltage box is provided with a battery cluster which is used for storing electric energy; the main control module is arranged in the PCS cabinet and is respectively connected with the AC main circuit breaker, the bidirectional converter module group, the miniature circuit breaker and the high-voltage box.

According to the utility model discloses PCS cabinet power supply system has following beneficial effect at least: the AC main breaker is arranged in the PCS cabinet, the electric shock risk of personnel can be reduced in the process of maintaining the PCS cabinet by personnel, the AC main breaker can be timely disconnected in the PCS cabinet when emergency occurs, disconnection in a power distribution cabinet is not needed, and installation of multiple groups of 185 square millimeter electric wires and multiple paths of AC circuit breakers can be reduced in the PCS cabinet, so that the cost is saved.

According to the utility model discloses a some embodiments, bidirectional conversion module group includes a plurality of bidirectional converter, circuit breaker module group includes a plurality of direct current circuit breaker, bidirectional converter with direct current circuit breaker quantity is the same, bidirectional converter's output with direct current circuit breaker's input is connected.

According to some embodiments of the utility model, exchange total circuit breaker with bidirectional conversion module group connects through first copper bar, bidirectional converter with direct current circuit breaker passes through the second copper bar and connects.

According to some embodiments of the present invention, the bidirectional converter with the quantity of direct current breaker is 8.

According to some embodiments of the utility model, host system is provided with the communication port.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic diagram of a PCS cabinet power supply system according to an embodiment of the present invention;

fig. 2 is the utility model discloses the schematic diagram of PCS cabinet and switch board.

Reference numerals:

the system comprises a PCS cabinet 100, an AC main breaker 110, a bidirectional conversion module group 120, a bidirectional converter 121, a breaker module group 130, a DC breaker 131, a main control module 140, a power distribution cabinet 200, a miniature breaker 210 and a high-voltage box 300.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the present number, and the terms greater than, less than, within, etc. are understood as including the present number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Embodiments of the present invention will be further explained with reference to the drawings.

Referring to fig. 1, in some embodiments of the present invention, the PCS cabinet power supply system includes a PCS cabinet 100, a power distribution cabinet 200 and a high voltage box 300, wherein the ac main breaker 110 is disposed in the PCS cabinet 100 and connected to the mains supply, and the ac main breaker 110 is used for controlling on/off of the mains supply; the bidirectional converter module group 120 is arranged in the PCS cabinet 100 and connected to an output terminal of the ac main circuit breaker 110, and the bidirectional converter module group 120 is used for interconversion between ac power and dc power, that is, the bidirectional converter module group 120 can convert ac power into dc power and also convert dc power into ac power; the breaker module set 130 is disposed in the PCS cabinet 100 and connected to the bidirectional converter module set 120. A micro breaker 210 is provided in the distribution cabinet 200, the micro breaker 210 is connected to an input terminal of the ac main breaker 110, and a battery cluster (not shown) for storing electric energy is provided in the high voltage box 300. The PCS cabinet 100 further includes a main control module 140, and the main control module 140 is respectively connected to the ac main breaker 110, the bidirectional converter module group 120, the miniature circuit breaker 210, and the high-voltage box 300.

Through setting up AC main breaker 110 in PCS cabinet 100, when debugging personnel debugs, overhauls PCS cabinet 100, disconnection AC main breaker 110 enables PCS cabinet 100 outage and keeps switch board 200 normal operation, can reduce the risk that debugging personnel electrocute, when emergency takes place and need the outage, can in time cut off the power supply. The arrangement of the AC main circuit breaker 110 in the PCS cabinet 100 can eliminate 8 AC circuit breakers and multiple groups of 185 square millimeter wires in the original PCS cabinet 100, and cost is saved.

Referring to fig. 2, in some embodiments of the present invention, the bidirectional conversion module set 120 includes a plurality of bidirectional converters 121, the breaker module set 130 includes a plurality of dc breakers 131, the output terminals of the bidirectional converters 121 are connected to the input terminals of the dc breakers 131, it can be understood that the bidirectional converters 121 and the dc breakers 131 are equal in number, and the current flows through the dc breakers 131 after being converted by the bidirectional converters 121. The current is converted by the multi-path bidirectional converter 121, so that the current is adaptive to a power supply, the direct current breaker 131 plays a role in protection, the safety from each path of bidirectional converter 121 to a battery cluster is protected, and the condition that the battery cluster is damaged due to overlarge current is avoided.

In some embodiments of the present invention, the ac main breaker 110 is connected to the bidirectional converter module set 120 through a first copper bar, and the bidirectional converter 121 and the dc breaker 131 are connected through a second copper bar. The copper bar plays the effect of carrying electric current and connecting electrical equipment in PCS cabinet power supply system, uses the copper bar can reduce the influence of surrounding environment factor to PCS cabinet 100's internal connection relation, and simple to operate, and electric conductive property is good, can use for a long time, reduces the maintenance cost.

The utility model discloses in some embodiments, the quantity of bidirectional converter 121 and direct current breaker 131 is 8, and 8 bidirectional converter 121 is connected with 8 direct current breaker 131 respectively promptly, has 8 branches to charge the energy storage to the battery cluster, can improve work efficiency effectively.

In some embodiments of the present invention, the main control module 140 is provided with a communication port, which can control and protect the PCS cabinet 100 and the power distribution cabinet 200 through remote parameter setting. The main control module 140 can be in communication connection with the bidirectional converter module 120, and the main control module 140 is connected with the high-voltage box 300, can read information of the battery cluster, perform charge and discharge management control on the battery cluster, can read parameters such as terminal voltage and current of the ac main circuit breaker 110, and is beneficial to control of a power supply system of the PCS cabinet.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims (5)

1. A PCS cabinet power supply system is characterized by comprising:

a PCS cabinet;

the AC main breaker is arranged in the PCS cabinet, is connected with a mains supply and is used for controlling the connection and disconnection of the mains supply;

the bidirectional converter module group is arranged in the PCS cabinet, is connected with the output end of the AC main circuit breaker and is used for converting AC power and DC power;

the circuit breaker module group is arranged in the PCS cabinet and is connected with the bidirectional converter module group;

the power distribution cabinet is provided with a miniature circuit breaker, and the miniature circuit breaker is connected with the input end of the AC main circuit breaker;

the high-voltage box is provided with a battery cluster which is used for storing electric energy;

and the main control module is arranged in the PCS cabinet and is respectively connected with the AC main circuit breaker, the bidirectional converter module group, the miniature circuit breaker and the high-voltage box.

2. The PCS cabinet power supply system according to claim 1 wherein said set of bidirectional converter modules includes a plurality of bidirectional converters, said set of breaker modules includes a plurality of DC breakers, said number of bidirectional converters being the same as said number of DC breakers, and wherein the output of said bidirectional converters are connected to the input of said DC breakers.

3. The PCS cabinet power supply system according to claim 2, wherein said AC main breaker is connected to said set of bidirectional converter modules by a first copper bar, and said bidirectional converter and said DC breaker are connected by a second copper bar.

4. The PCS cabinet power supply system according to claim 2, characterized in that the number of said bidirectional converters and said direct current breakers are 8 each.

5. The PCS cabinet power supply system according to claim 1, wherein the master control module is provided with a communication port.

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