Prepackaged box transformer with good heat dissipation and convenient maintenance

Abstract

The utility model relates to power equipment technical field especially relates to a prepackaged box transformer with good heat dissipation and convenient maintenance. Compared with prior art's box transformer, the transformer of the utility model is exposed installation in the periphery of box transformer cabinet body, so the heat dissipation of transformer will be better, further, box transformer cabinet body is provided with mutually isolated independent high -pressure room, low -pressure room, wherein the high -pressure room is provided with the circuit breaker switch for the maintenance isolation, and can satisfy the use requirement of the circuit breaker switch of transformer when exceeding 800kVA, therefore, when maintaining and overhauling and looped network line maintenance, can disconnect isolated high -voltage line through the circuit breaker switch, need not whole power supply line power failure, very convenient to use, still, the prepackaged box transformer provided by the utility model can be assembled together in the factory after various accessories, make into prefabricated transformer substation whole and transport to project site, and the land occupation is small, convenient to use.

Description

Technical fields:

[0001] This utility model relates to the field of power equipment technology, and in particular to a prefabricated box-type transformer that has good heat dissipation and is easy to maintain. Background technology:

[0002] Currently, there are generally two design schemes for prefabricated box-type substations on the market: one is the European-style box-type substation, where the transformer is inside the box-type substation enclosure, and switchgear is installed in separate high-voltage and low-voltage compartments. In this design, the transformer is enclosed inside the enclosure, resulting in poor heat dissipation and severe overheating when using high-power electricity; the other is the American-style box-type substation, which has a low-voltage switchgear compartment, with the transformer exposed on the outside. Although this solves the transformer's heat dissipation problem, it lacks a high-voltage switchgear compartment. When performing maintenance and repairs, as well as ring network line maintenance, the entire power supply line must be shut down, making operation and maintenance very inconvenient. Utility model content:

[0003] The purpose of this utility model is to provide a prefabricated transformer box to address the shortcomings of existing technologies, which can solve the heat dissipation problem of transformers and make them convenient to use and maintain.

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

[0005] A prefabricated transformer substation with good heat dissipation and convenient maintenance includes: a transformer cabinet, wherein the transformer cabinet is provided with a high-voltage compartment and a low-voltage compartment that are isolated from each other, and the high-voltage compartment is provided with a circuit breaker switch for maintenance isolation; and a transformer, wherein the transformer is exposed and installed on the periphery of the transformer cabinet, and the capacity of the transformer is in the range of 30-2500kVA.

[0006] A further improvement to the above scheme is that the high-voltage room includes a high-voltage incoming cabinet, a high-voltage loopout cabinet, and a high-voltage outgoing cabinet.

[0007] A further improvement to the above scheme is that the low-voltage room includes a low-voltage metering room, a low-voltage incoming line room, a low-voltage outgoing line room, a low-voltage compensation room, and an intelligent compartment.

[0008] A further improvement to the above scheme is that the low-voltage room also includes a universal circuit breaker, a molded case circuit breaker, control buttons, indicator lights, a power distribution intelligent gateway, and a low-voltage panel-type current module. The transformer cabinet is equipped with a water immersion sensor, a temperature and humidity sensor, a smoke sensor, and a door status sensor.

[0009] A further improvement to the above scheme is that the transformer is an oil-immersed transformer, which is equipped with a condition monitoring device, which includes an oil temperature sensor, an oil pressure sensor, and an oil level sensor.

[0010] A further improvement to the above scheme is that the transformer cabinet is in the shape of a sideways "L", with the high-voltage chamber located at the front left, the low-voltage chamber located at the front right, and the low-voltage compensation chamber located at the rear right.

[0011] A further improvement to the above scheme is that the length of the transformer substation cabinet is 3000 cm, the width is 1000 cm, and the height is 2250 cm. Of course, the dimensions of the transformer substation cabinet 1 can be adapted to the actual situation, such as the number of internal switches, and this also falls within the scope of protection of this application.

[0012] The beneficial effects of this utility model are as follows:

[0013] This utility model provides a prefabricated box-type substation, comprising: a box-type substation cabinet, wherein the box-type substation cabinet is provided with a high-voltage compartment and a low-voltage compartment that are isolated from each other, and the high-voltage compartment is provided with a circuit breaker switch for maintenance isolation; and a transformer, wherein the transformer is installed exposed on the periphery of the box-type substation cabinet, and the capacity range of the transformer is 30-2500kVA.

[0014] Compared to existing prefabricated substations, the transformer in this invention is installed exposed on the outside of the substation cabinet, resulting in better heat dissipation. Furthermore, the substation cabinet contains isolated high-voltage and low-voltage compartments. The high-voltage compartment is equipped with a circuit breaker switch for maintenance isolation, meeting the requirements for transformers exceeding 800kVA. Therefore, during maintenance and ring network line repairs, the high-voltage line can be disconnected using the circuit breaker switch without shutting down the entire power supply line, making it very convenient. Additionally, the prefabricated substation provided by this invention allows for the assembly of various components in the factory, forming a prefabricated substation that can be transported to the project site, resulting in a small footprint and ease of use. Attached image description:

[0015] Figure 1 This is a structural schematic diagram of the present invention from the main view direction.

[0016] Figure 2 This is a top view of the structure of this utility model.

[0017] Figure 3 This is a schematic diagram of the internal structure of the present invention from the main viewing direction.

[0018] Explanation of reference numerals in the attached figures:

[0019] Transformer cabinet 1,

[0020] High-voltage compartment 11, high-voltage incoming cabinet 111, high-voltage loopout cabinet 112, high-voltage outgoing cabinet 113.

[0021] Low-voltage compartment 12, low-voltage metering compartment 121, low-voltage incoming line compartment 122, low-voltage outgoing line compartment 123, low-voltage compensation compartment 124, intelligent compartment 125, universal circuit breaker 126, power distribution intelligent gateway 127, low-voltage panel-mounted current module 128

[0022] Transformer 13, condition monitoring device 131. Detailed implementation method:

[0023] The present invention will be further described below with reference to the accompanying drawings, such as... Figure 1-3 As shown, this utility model includes a transformer cabinet 1, which contains a high-voltage compartment 11 and a low-voltage compartment 12 that are isolated from each other. The high-voltage compartment 11 contains a circuit breaker switch for maintenance isolation. It also includes a transformer 13, which is installed exposed on the periphery of the transformer cabinet 1, and the capacity of the transformer 13 is 30-2500kVA. Since the transformer 13 of this utility model is installed exposed on the outside of the transformer cabinet 1, the heat dissipation of the transformer 13 is better. Furthermore, the transformer cabinet 1 is equipped with a high-voltage compartment 11 and a low-voltage compartment 12 that are isolated from each other. The high-voltage compartment 11 is equipped with a circuit breaker switch for maintenance isolation, which can meet the requirements for the use of circuit breaker switches for transformers exceeding 800kVA. Therefore, during maintenance and repair of ring network lines, the high-voltage line can be disconnected and isolated by the circuit breaker switch without shutting down the entire power supply line, which is very convenient to use. In addition, the prefabricated transformer provided by this utility model can assemble various components together in the factory and transport the prefabricated substation as a whole to the project site, which has a small footprint and is easy to use.

[0024] Preferably, the high-voltage room 11 includes a high-voltage incoming cabinet 111, a high-voltage loop-out cabinet 112, and a high-voltage outgoing cabinet 113. The high-voltage incoming cabinet 111 is used to connect to an external high-voltage power supply. The high-voltage loop-out cabinet 112 is used to realize the ring network power supply function, supporting ring network connection with other transformer substations or substations, improving the flexibility and reliability of the power supply system. The high-voltage outgoing cabinet 113 is used to distribute high-voltage electricity to the low-voltage room for voltage reduction. Therefore, the high-voltage room 11 can use various wiring methods: ring network type, terminal type, high-voltage metering, PT cabinet, etc.

[0025] Preferably, the low-voltage compartment 12 includes a low-voltage metering compartment 121, a low-voltage incoming compartment 122, a low-voltage outgoing compartment 123, a low-voltage compensation compartment 124, and a smart compartment 125. The low-voltage compartment 12 also includes a universal circuit breaker 126, control buttons, indicator lights, a power distribution smart gateway 127, and a low-voltage panel-mounted current module 128. The low-voltage metering compartment 121 is equipped with a high-precision meter for accurately measuring the power consumption of the low-voltage system. The low-voltage incoming compartment 122 receives the low-voltage electricity after it has been stepped down from the high-voltage compartment and performs initial distribution. The low-voltage outgoing compartment 123 distributes the low-voltage electricity to various electrical loads, supporting multi-circuit outgoing design to meet the power needs of different users. The low-voltage compensation compartment 124 is equipped with reactive power compensation devices, such as capacitor banks, for reactive power compensation of the low-voltage power grid, improving the power factor and optimizing power quality. The intelligent compartment 125 is equipped with intelligent devices such as a power distribution intelligent gateway 127 and a low-voltage panel-type current module 128 for intelligent monitoring and management of the low-voltage system. In addition, the low-voltage compartment 12 is also equipped with a universal circuit breaker 126, a molded case circuit breaker, control buttons, and indicator lights for control and protection of the low-voltage circuits. The transformer cabinet 1 is equipped with water immersion sensors, temperature and humidity sensors, smoke sensors, and door status sensors to monitor the real-time status of the entire transformer.

[0026] Preferably, transformer 13 is an oil-immersed transformer with a capacity range of 30-2500kVA, installed exposed on the periphery of the transformer cabinet. This design allows for better heat exchange between the transformer and the outside air during operation, effectively solving the problem of poor heat dissipation in traditional transformer cabinets. Even under high power consumption, the transformer maintains good heat dissipation performance, preventing equipment damage due to overheating. Transformer 13 is also equipped with a condition monitoring device 131, including an oil temperature sensor, an oil pressure sensor, and an oil level sensor, for real-time monitoring of the transformer's condition, enabling timely detection of abnormalities and implementation of corresponding measures to ensure the safe and stable operation of the transformer.

[0027] Preferably, the transformer substation cabinet 1 is a sideways "L" shape, with the high-voltage compartment 11 located at the front left, the low-voltage compartment 12 at the front right, and the low-voltage compensation compartment 124 at the rear right. The cabinet is 3000 cm long, 1000 cm wide, and 2250 cm high. This structural design not only optimizes the space layout but also facilitates equipment installation and maintenance. The cabinet is made of high-strength steel with an anti-corrosion treatment to withstand complex outdoor environments. Of course, the dimensions of the cabinet 1 can be adapted to the actual situation, such as the number of internal switches, and this also falls within the scope of protection of this application.

[0028] This prefabricated transformer substation is suitable for various scenarios, including but not limited to small industrial sites, commercial buildings, residential communities, and large industrial parks. For locations with high power loads, a larger capacity transformer can be selected, and the number of outgoing circuits in the low-voltage room can be increased according to actual needs to meet the power demands of more users. For example, in a medium-sized industrial park, an 800kVA transformer can be selected, configured with 12 low-voltage outgoing lines to meet the power needs of multiple factories within the park.

[0029] Of course, the above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A prefabricated transformer substation with good heat dissipation and convenient maintenance, characterized in that, include: The transformer substation cabinet contains a high-voltage compartment and a low-voltage compartment that are isolated from each other. The high-voltage compartment is equipped with a circuit breaker switch for maintenance isolation. The transformer is installed exposed on the periphery of the transformer cabinet, and the capacity range of the transformer is 30-2500kVA; The high-voltage room includes a high-voltage incoming cabinet, a high-voltage loop-out cabinet, and a high-voltage outgoing cabinet. The high-voltage incoming cabinet is used to connect to an external high-voltage power supply. The high-voltage loop-out cabinet is used to realize the ring network power supply function and support the ring network connection with other box-type substations or substations. The high-voltage outgoing cabinet is used to distribute high-voltage electricity to the low-voltage room for voltage reduction. The low-voltage compartment includes a low-voltage metering compartment, a low-voltage incoming line compartment, a low-voltage outgoing line compartment, a low-voltage compensation compartment, and a smart compartment. The low-voltage metering compartment is equipped with electricity meters for accurately measuring the power consumption of the low-voltage system. The low-voltage incoming line compartment receives the low-voltage electricity stepped down from the high-voltage compartment and performs initial distribution. The low-voltage outgoing line compartment distributes the low-voltage electricity to various electrical loads and supports multi-circuit outgoing line designs. The low-voltage compensation compartment is equipped with a reactive power compensation device for reactive power compensation of the low-voltage power grid. The smart compartment is equipped with a power distribution smart gateway and a low-voltage panel-type current module for intelligent monitoring and management of the low-voltage system. The transformer cabinet is in the shape of a sideways "L". The high-voltage compartment is located at the front left, the low-voltage compartment is located at the front right, and the low-voltage compensation compartment is located at the rear right.

2. The prefabricated transformer substation with good heat dissipation and convenient maintenance according to claim 1, characterized in that: The low-voltage room also includes a universal circuit breaker, a molded case circuit breaker, control buttons, indicator lights, a power distribution smart gateway, and a low-voltage panel-type current module. The transformer cabinet is equipped with a water immersion sensor, a temperature and humidity sensor, a smoke sensor, and a door status sensor.

3. The prefabricated transformer substation with good heat dissipation and convenient maintenance according to claim 1, characterized in that: The transformer is an oil-immersed transformer, which is equipped with a condition monitoring device, which includes an oil temperature sensor, an oil pressure sensor, and an oil level sensor.

4. The prefabricated transformer substation with good heat dissipation and convenient maintenance according to claim 1, characterized in that: The transformer substation cabinet is 3000 cm long, 1000 cm wide, and 2250 cm high.

Images