Energy storage converter and voltage booster integrated machine

Abstract

The utility model discloses a kind of energy storage converter step-up integrated machine, it includes transformer room, high-pressure chamber, low-pressure chamber, converter, high-pressure chamber and low-pressure chamber setting in base left side, front end is high-pressure chamber, transformer room is set in base middle part, transformer room, low-pressure chamber, high-pressure chamber are set in a closed box, converter is two settings in base right side, circuit breaker cabinet is provided in the right side of transformer room, alternating current copper bar shield is provided in the middle of converter, converter is separately externally equipped, change the design of traditional integrated machine structure, save the manufacturing cost, transportation cost of traditional integrated machine, copper bar protection is used to copper bar of transformer low-voltage alternating current side and converter alternating current side connection, copper bar with converter compartment placement of larger heat dissipation, effectively reduce temperature rise problem, improve the comprehensive efficiency of converter.

Description

Technical Field

[0001] This utility model relates to the field of new energy storage equipment, specifically an integrated energy storage converter and booster unit. Background Technology

[0002] Energy storage power stations participate in the peak shaving and frequency regulation services of the power grid, effectively alleviating the problem of insufficient frequency regulation resources in regional power grids, improving the flexibility, economy, and security of traditional power systems, as well as the grid's ability to absorb new energy sources. An integrated energy storage converter-boost unit is a power device that integrates converter and boost functions. It can not only convert high and low voltage currents through the transformer section, but also convert AC and DC power through the converter. As battery capacity increases, the capacity of the matching transformer substation is required. Larger capacities place higher demands on the heat dissipation performance of the integrated energy storage converter-boost unit, which traditional integrated enclosure structures can no longer meet. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides an integrated energy storage converter and boost converter with reasonable structural design and good heat dissipation.

[0004] To achieve the above-mentioned objectives, the technical solution adopted by this utility model is as follows:

[0005] An integrated energy storage converter and booster unit includes a transformer compartment, a high-voltage compartment, a low-voltage compartment, and a converter integrated on a base. The high-voltage compartment and the low-voltage compartment are located on the left side of the base, with the high-voltage compartment at the front. The transformer compartment is located in the middle of the base. The transformer compartment, the low-voltage compartment, and the high-voltage compartment are housed in a closed enclosure. Two converters are located on the right side of the base. A circuit breaker cabinet is located on the right side of the transformer compartment, and an AC copper busbar cover is located in the middle of the converter.

[0006] The high-voltage room is equipped with a vacuum circuit breaker, surge arrester, and current transformer; the low-voltage room is equipped with a communication cabinet and an auxiliary power distribution cabinet.

[0007] The communication cabinet is a comprehensive power distribution box structure, containing measurement and control devices and auxiliary power supplies; a dry-type transformer is arranged inside the auxiliary power supply distribution cabinet.

[0008] The base is equipped with a manhole, cable outlet, and communication cable outlet; fire extinguishers are arranged in the high-voltage chamber and the low-voltage chamber.

[0009] The transformer room is equipped with a dry-type transformer; the circuit breaker cabinet is equipped with a frame circuit breaker.

[0010] The outgoing cable hole is located in the high-voltage chamber, the communication cable hole is located in the low-voltage chamber, and the manhole is located on the side of the converter.

[0011] The low-voltage AC side of the transformer is connected to the AC side of the converter via a connecting copper busbar. A copper busbar cover is installed outside the connecting copper busbar. The connecting copper busbar with a large heat dissipation is placed separately from the converter.

[0012] The low-voltage AC side of the transformer is connected to the AC side of the converter via a frame circuit breaker.

[0013] The transformer room has air intakes at the lower front and rear sides and centrifugal fans at the upper part for air outlet; the low-voltage room has air intakes at the lower part and centrifugal fans at the upper part for air outlet.

[0014] The beneficial effects of this utility model are as follows: Compared with the traditional integrated energy storage converter and booster unit, this utility model has complete functional components and a reasonable structural design. It separates the converter from the transformer room and sets up a copper busbar with a large heat dissipation capacity with a separate copper busbar cover. Combined with the heat dissipation structure of the transformer room and the low-voltage room, it greatly improves the heat dissipation performance of the entire device. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the internal structure of the present invention;

[0016] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0017] Figure 3 This is a three-dimensional structural diagram of the present invention.

[0018] 1-Low-voltage room, 2-Communication cabinet, 3-Auxiliary power supply distribution cabinet, 4-Transformer room, 5-Circuit breaker cabinet, 6-Converter, 7-Copper busbar cover, 8-Manhole, 11-Vacuum circuit breaker, 12-Outgoing cable hole, 13-Surge arrester, 14-Centrifugal fan, 16-Communication cable hole. Detailed Implementation

[0019] The following will be combined with the appendix Figure 1-3 The technical solution of this utility model is clearly and completely described as follows: An integrated energy storage converter and booster unit includes a transformer chamber 4, a high-voltage chamber, a low-voltage chamber 1, and a converter 6 integrated on a base. The high-voltage chamber and the low-voltage chamber are located on the left side of the base, with the high-voltage chamber at the front. The transformer chamber 4 is located in the middle of the base. The transformer chamber 4, the low-voltage chamber 1, and the high-voltage chamber are housed in a closed enclosure. There are two converters 6 located on the right side of the base. A circuit breaker cabinet 5 is located on the right side of the transformer chamber 4, and an AC copper busbar cover 7 is located in the middle of the converter 6.

[0020] The high-voltage room is equipped with a vacuum circuit breaker 11, a surge arrester 13, and a current transformer; the low-voltage room is equipped with a communication cabinet 2 and an auxiliary power distribution cabinet 3.

[0021] The communication cabinet 2 is an integrated power distribution box structure, containing measurement and control devices and auxiliary power supply; the auxiliary power supply distribution cabinet 3 is equipped with a dry-type transformer. The high integration of functional modules is conducive to realizing the modular design, transportation and maintenance of the product.

[0022] The base is equipped with a manhole 8, a cable outlet 12, and a communication cable outlet 16; fire extinguishers are arranged in the high-voltage chamber and the low-voltage chamber.

[0023] The converter 6 is equipped with two 2500kW outdoor converters, and the transformer room 4 is equipped with an SCB14-5250kWA dry-type transformer; the circuit breaker cabinet 5 is equipped with an In=5000A frame circuit breaker.

[0024] The outgoing cable hole 12 is located in the high-voltage chamber, the communication cable hole 16 is located in the low-voltage chamber, and the manhole 8 is located on one side of the converter.

[0025] The low-voltage AC side of the transformer and the AC side of the converter are connected by a connecting copper busbar. A copper busbar cover 7 is installed outside the connecting copper busbar, which can not only be waterproof and dustproof, improving the protection level, but also has a large heat dissipation capacity. The connecting copper busbar and the converter are placed in separate compartments, resulting in good heat dissipation.

[0026] The low-voltage AC side of the transformer is connected to the AC side of the converter via a frame circuit breaker, which facilitates the inspection and maintenance of the converter equipment and improves the reliability of the charging and discharging system.

[0027] The transformer chamber has air intakes at the lower front and rear sides and centrifugal fans 14 at the upper part for air outlet; the low-voltage chamber has air intakes at the lower part and centrifugal fans 14 at the upper part for air outlet. This forced air cooling structure greatly reduces the temperature rise of the transformer and auxiliary transformer, which is conducive to the safe and stable operation of the transformer.

[0028] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements can be made without departing from the principle of the present utility model. These improvements should also be considered within the scope of protection of the present utility model without creative effort.

Claims

1. An integrated energy storage converter and boost converter, characterized in that: It includes a transformer compartment, a high-voltage compartment, a low-voltage compartment, and a converter integrated on the base. The high-voltage compartment and the low-voltage compartment are located on the left side of the base, with the high-voltage compartment at the front. The transformer compartment is located in the middle of the base. The transformer compartment, the low-voltage compartment, and the high-voltage compartment are housed in a closed enclosure. There are two converters located on the right side of the base. A circuit breaker cabinet is located on the right side of the transformer compartment, and an AC copper busbar cover is located in the middle of the converter.

2. The integrated energy storage converter and boost converter according to claim 1, characterized in that: The high-voltage compartment is equipped with vacuum circuit breakers, surge arresters, and current transformers; the low-voltage compartment is equipped with a communication cabinet and an auxiliary power distribution cabinet.

3. The integrated energy storage converter and boost converter according to claim 2, characterized in that: The communication cabinet is a comprehensive power distribution box structure, containing measurement and control devices and auxiliary power supplies; a dry-type transformer is arranged inside the auxiliary power supply distribution cabinet.

4. The integrated energy storage converter and boost converter according to claim 1, characterized in that: The base is equipped with a manhole, cable outlet, and communication cable outlet; fire extinguishers are installed in the high-voltage and low-voltage chambers.

5. The integrated energy storage converter and boost converter according to claim 1, characterized in that: The transformer room is equipped with a dry-type transformer; the circuit breaker cabinet is equipped with a frame circuit breaker.

6. The integrated energy storage converter and boost converter according to claim 4, characterized in that: Outgoing cable holes are located in the high-voltage room, and communication cable holes are located in the low-voltage room.

7. The integrated energy storage converter and boost converter according to claim 5, characterized in that: The low-voltage AC side of the transformer is connected to the AC side of the converter via a connecting copper busbar. A copper busbar cover is installed outside the connecting copper busbar. The connecting copper busbar with a large heat dissipation is placed separately from the converter.

8. The integrated energy storage converter and boost converter according to claim 7, characterized in that: The low-voltage AC side of the transformer is connected to the AC side of the converter via a frame circuit breaker.

9. The integrated energy storage converter and boost converter according to claim 1, characterized in that: The transformer room has air intakes at the bottom on both the front and rear sides, and centrifugal fans at the top for air outlets; the low-voltage room has air intakes at the bottom, and centrifugal fans at the top for air outlets.

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