A centralized emergency power supply device and equipment for wind power plants

Abstract

This utility model discloses a centralized emergency power supply device and equipment for wind power stations, applied in the field of wind power generation. The output terminal of the diesel generator is connected to the low-voltage bus voltage network in the low-voltage compensation cabinet, used to send power supply voltage to the low-voltage compensation cabinet; the output terminal of the low-voltage compensation cabinet is connected to the input terminal of the step-up transformer cabinet, used to send the low-voltage compensated power supply voltage to the step-up transformer cabinet; the output terminal of the step-up transformer cabinet is connected to the input terminal of the gas-insulated ring main unit, used to step up the low-voltage compensated power supply voltage and send it to the gas-insulated ring main unit; the output terminal of the gas-insulated ring main unit is connected to the wind power station bus voltage network, used to provide the stepped-up power supply voltage to the wind power station bus voltage network when the wind power station bus voltage network is in an abnormal state, so that the wind power station bus can supply power to the connected wind turbine generators. Therefore, this application improves the wind farm's ability to withstand extreme weather.

Description

Technical Field

[0001] This utility model relates to the field of wind power generation, and in particular to a centralized emergency power supply device and equipment for wind power stations. Background Technology

[0002] Before extreme weather arrives, there is a significant risk of wind farms being disconnected from the power grid. If the units lose power, the wind turbines will cease operation, causing the yaw motors to lose power. The turbines will not be able to enter typhoon-resistant mode in a timely and automatic manner, which will result in major accidents and economic losses.

[0003] In view of the above-mentioned technologies, finding a centralized emergency power supply device for wind power stations is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] The purpose of this invention is to provide a centralized emergency power supply device and equipment for wind power stations. This can solve the problem in existing technologies where wind turbine generators stop operating due to grid disconnection, leading to major accidents and economic losses.

[0005] To solve the above-mentioned technical problems, this utility model provides a centralized emergency power supply device for wind power stations, which can be used in outdoor containers or substation distribution rooms, including: gas-insulated ring main unit, step-up transformer cabinet, low-voltage compensation cabinet, and diesel generator;

[0006] The output terminal of the diesel generator is connected to the low-voltage bus voltage network in the low-voltage compensation cabinet, and is used to send power supply voltage to the low-voltage compensation cabinet.

[0007] The output terminal of the low-voltage compensation cabinet is connected to the input terminal of the step-up transformer cabinet, and is used to send the power supply voltage to the step-up transformer cabinet after low-voltage compensation.

[0008] The output terminal of the step-up transformer is connected to the input terminal of the gas-insulated ring main unit. It is used to step up the power supply voltage after low-voltage compensation and send it to the gas-insulated ring main unit.

[0009] The output terminal of the gas-insulated ring main unit is connected to the bus voltage grid of the wind power station. It is used to provide the boosted power supply voltage to the bus voltage grid of the wind power station when the bus voltage grid is in an abnormal state, so that the wind power station bus can supply power to the connected wind turbine generators.

[0010] Preferably, the low-voltage compensation cabinet includes: a first compensation cabinet, a second compensation cabinet, a first circuit breaker, a second circuit breaker, and a third circuit breaker;

[0011] The connection end of the first compensation cabinet is connected to the connection end of the second compensation cabinet.

[0012] The control terminal of the first compensation cabinet is connected to the first terminal of the first circuit breaker;

[0013] The control terminal of the second compensation cabinet is connected to the first terminal of the second circuit breaker;

[0014] The first terminal of the third circuit breaker is connected to the output terminal of the diesel generator as the input terminal of the low-voltage compensation cabinet.

[0015] The second terminals of the first circuit breaker, the second circuit breaker, and the third circuit breaker are all connected to the low-voltage bus voltage network.

[0016] Preferably, the low-voltage compensation cabinet further includes: a fourth circuit breaker;

[0017] The first terminal of the fourth circuit breaker is connected to the low-voltage bus voltage network in the low-voltage compensation cabinet;

[0018] The second terminal of the fourth circuit breaker is connected to the step-up transformer cabinet.

[0019] Preferably, the low-voltage compensation cabinet further includes: a first lighting device, a first emergency device, a first fire-fighting device, and a first lightning protection device;

[0020] The input terminals of the first lighting device, the first emergency device, the first fire-fighting device, and the first lightning protection device are connected together and are connected to the first terminal of the fourth circuit breaker.

[0021] The output terminals of the first lighting device, the first emergency device, the first fire-fighting device, and the first lightning protection device are connected together and connected to the second terminal of the fourth circuit breaker.

[0022] Preferably, the step-up transformer cabinet includes: a step-up transformer;

[0023] Among them, the first end of the step-up transformer is connected to the output end of the low-voltage compensation cabinet as the input end of the step-up transformer cabinet;

[0024] The second end of the step-up transformer is connected to the input end of the gas-insulated ring main unit as the output end of the step-up transformer cabinet.

[0025] Preferably, the step-up transformer switch also includes: a second lighting device, a second emergency device, a second fire-fighting device, and a second lightning protection device;

[0026] The input terminals of the second lighting device, the second emergency device, the second fire protection device, and the second lightning protection device are connected together and connected to the first terminal of the step-up transformer.

[0027] The output terminals of the second lighting device, the second emergency device, the second fire-fighting device, and the second lightning protection device are connected together and connected to the second terminal of the step-up transformer.

[0028] Preferably, the gas-insulated ring main unit includes: a ring main unit and a ring main load switch;

[0029] Among them, the first terminal of the ring network load switch is connected to the input terminal of the ring network cabinet, and together they serve as the input terminal of the gas-insulated ring network cabinet and are connected to the output terminal of the step-up transformer cabinet.

[0030] The second terminal of the ring main unit load switch is connected to the output terminal of the ring main unit, and together they serve as the output terminal of the gas-insulated ring main unit, connected to the bus voltage grid of the wind power station.

[0031] Preferably, the gas-insulated ring main unit includes: a third lighting device, a third emergency device, a third fire-fighting device, and a third lightning protection device;

[0032] Among them, the input terminals of the third lighting device, the third emergency device, the third fire protection device, and the third lightning protection device are connected, and are all connected to the first terminal of the ring network load switch and the input terminal of the ring network cabinet;

[0033] The output terminals of the third lighting device, the third emergency device, the third fire protection device, and the third lightning protection device are connected together, and are also connected to the second terminal of the ring network load switch and the output terminal of the ring network cabinet.

[0034] Preferably, it further includes: a fifth circuit breaker;

[0035] The first terminal of the fifth circuit breaker is connected to the output terminal of the gas-insulated ring main unit.

[0036] The second terminal of the fifth circuit breaker is connected to the bus voltage grid of the wind power station.

[0037] On the other hand, this application also provides an electronic device, including the aforementioned centralized emergency power supply device for wind power stations.

[0038] Therefore, this application provides a separate centralized emergency power supply device for wind farms connected to the power grid. When the connection between the wind turbine generators and the grid is disconnected, the power supply voltage provided by the diesel generators supplies power to the wind turbine generators in the wind farm through the low-voltage compensation cabinet, step-up transformer cabinet, gas-insulated ring main unit, and the wind farm bus voltage network. This improves the wind farm's ability to withstand extreme weather and ensures continuous centralized dispatch of power supply. Attached Figure Description

[0039] To more clearly illustrate the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 A schematic diagram of a centralized emergency power supply device for a wind power station provided in the embodiments of this application;

[0041] Figure 2 This is a complete schematic diagram of a centralized emergency power supply device for a wind power station, provided as an embodiment of this application. Detailed Implementation

[0042] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0043] The core of this utility model is to provide a centralized emergency power supply device and equipment for wind power stations.

[0044] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0045] Figure 1 A schematic diagram of a centralized emergency power supply device for a wind power station, provided as an embodiment of this application, is shown in the figure. It includes: a gas-insulated ring main unit 1, a step-up transformer 2, a low-voltage compensation cabinet 3, and a diesel generator 4. In addition, Figure 1 It also includes: low-voltage bus voltage grid 31 (0.4KW) and wind power station bus voltage grid 5 (35KW).

[0046] The connection relationship of the centralized emergency power supply device of the wind power station is as follows: the output end of the diesel generator 4 is connected to the low-voltage bus voltage network 31 in the low-voltage compensation cabinet 3; the output end of the low-voltage compensation cabinet 3 is connected to the input end of the step-up transformer cabinet 2 through an AC low-voltage cable; the output end of the step-up transformer cabinet 2 is connected to the input end of the gas-insulated ring network cabinet 1 through an AC high-voltage cable; the output end of the gas-insulated ring network cabinet 1 is connected to the wind power station bus voltage network 5 through an AC high-voltage cable.

[0047] In a specific embodiment, it should be noted that the centralized emergency power supply device for wind power stations provided in this application is installed in an outdoor container or in the distribution room of a step-up substation. Therefore, it is less affected by extreme weather and can supply power to the wind turbine generators. The internal gas-insulated ring main unit 1 is an independent switchgear, and the step-up transformer cabinet 2 is located in a separate distribution room. Furthermore, the configuration and parameters of each device in the centralized typhoon-resistant emergency power supply system at least meet the energy loss requirements for all wind turbine generators in the wind farm to operate simultaneously in yaw mode.

[0048] It should also be noted that the centralized emergency power supply device for wind power stations provided in this application is essentially a backup power supply device. Therefore, when the wind turbine generator is connected to the power grid and the power grid is normal, the centralized emergency power supply device for wind power stations provided in this application will not work; when the wind turbine generator is disconnected from the power grid, that is, when the wind power station bus voltage grid is in an abnormal state, the centralized emergency power supply device for wind power stations provided in this application will be activated.

[0049] The working principle of the centralized emergency power supply device for wind power stations is as follows: When the bus voltage grid of the wind power station is in an abnormal state, that is, when the wind turbine generator is disconnected from the grid, the diesel generator 4 is started first to generate electricity and provide power supply voltage, which is then sent to the low-voltage compensation cabinet 3; after the low-voltage compensation cabinet 3 compensates the power supply voltage, and when the compensated power supply voltage meets the voltage requirements of the internal low-voltage bus voltage grid 31, the compensated power supply voltage is sent to the step-up transformer cabinet 2; the step-up transformer cabinet 2 performs a step-up operation on the compensated power supply voltage and sends the stepped-up power supply voltage to the gas-insulated ring main unit 1; then the gas-insulated ring main unit 1 sends the power supply voltage at this time to the wind power station bus voltage grid 5, so that the power supply voltage can be sent to the wind turbine generator connected to the wind power station bus voltage grid 5 through the wind power station bus voltage grid 5.

[0050] This utility model provides a centralized emergency power supply device for wind power stations, applicable to outdoor containers or substation distribution rooms. It includes: a gas-insulated ring main unit, a step-up transformer, a low-voltage compensation unit, and a diesel generator. The output of the diesel generator is connected to the low-voltage bus voltage network in the low-voltage compensation unit, supplying power to the unit. The output of the low-voltage compensation unit is connected to the input of the step-up transformer, compensating for low-voltage losses before supplying power to the transformer. The output of the step-up transformer is connected to the input of the gas-insulated ring main unit, boosting the compensated power supply voltage before supplying it to the ring main unit. The output of the gas-insulated ring main unit is connected to the wind power station bus voltage network, providing boosted power to the network when it is in an abnormal state, enabling the wind power station bus to supply power to the connected wind turbine generators. Therefore, this application provides a separate centralized emergency power supply device for wind farms connected to the power grid. When the connection between the wind turbine generators and the grid is disconnected, the power supply voltage provided by the diesel generators supplies power to the wind turbine generators in the wind farm through the low-voltage compensation cabinet, step-up transformer cabinet, gas-insulated ring main unit, and the wind farm bus voltage network. This improves the wind farm's ability to withstand extreme weather and ensures continuous centralized dispatch of power supply.

[0051] In specific embodiments, such as Figure 2 As shown, its low-voltage compensation cabinet 3 includes: a first compensation cabinet 32, a second compensation cabinet 33, a first circuit breaker QF1, a second circuit breaker QF2, a third circuit breaker QF3, and a fourth circuit breaker QF4. The connection relationships of the low-voltage compensation cabinets are as follows: the connection terminal of the first compensation cabinet 32 ​​is connected to the connection terminal of the second compensation cabinet 33; the control terminal of the first compensation cabinet 32 ​​is connected to the first terminal of the first circuit breaker QF1; the control terminal of the second compensation cabinet 33 is connected to the first terminal of the second circuit breaker QF2; the first terminal of the third circuit breaker QF3 serves as the input terminal of the low-voltage compensation cabinet 3 and is connected to the output terminal of the diesel generator 4; the second terminals of the first circuit breaker QF1, the second circuit breaker QF2, and the third circuit breaker QF3 are all connected to the low-voltage bus voltage network 31; the first terminal of the fourth circuit breaker QF4 is connected to the low-voltage bus voltage network 31 in the low-voltage compensation cabinet 3; and the second terminal of the fourth circuit breaker QF4 is connected to the step-up transformer cabinet 2.

[0052] In addition, to ensure the normal operation of the low-voltage compensation cabinet 3, it also includes: a first lighting device, a first emergency device, a first fire-fighting device, and a first lightning protection device, as well as: a first environmental control device, a first safety escape device, and a first grounding device. All these devices are connected in parallel.

[0053] like Figure 2As shown, the step-up transformer cabinet 2 includes a step-up transformer 21. The connection relationship is as follows: the first end of the step-up transformer 21 serves as the input end of the step-up transformer cabinet 2 and is connected to the output end of the low-voltage compensation cabinet 3; the second end of the step-up transformer 21 serves as the output end of the step-up transformer cabinet 2 and is connected to the input end of the gas-insulated ring main unit 1.

[0054] In addition, to ensure the normal operation of the step-up transformer cabinet 2, it also includes: a second lighting device, a second emergency device, a second fire-fighting device, and a second lightning protection device; and may also include a second environmental control device, a second safety escape device, and a second grounding device. All these devices are connected in parallel.

[0055] like Figure 2 As shown, the gas-insulated ring main unit 1 includes a ring main unit 11 and a ring main load switch QL1. The connection is as follows: the first terminal of the ring main load switch QL1 is connected to the input terminal of the ring main unit 11, and together they serve as the input terminal of the gas-insulated ring main unit 1, connected to the output terminal of the step-up transformer 2; the second terminal of the ring main load switch QL1 is connected to the output terminal of the ring main unit 11, and together they serve as the output terminal of the gas-insulated ring main unit 1, connected to the wind power station bus voltage network 5.

[0056] In addition, to ensure the normal operation of the gas-insulated ring main unit 1, it also includes a third lighting device, a third emergency device, a third fire-fighting device, and a third lightning protection device; as well as a third environmental control device, a third safety escape device, and a third grounding device. All of these devices are connected in parallel.

[0057] and Figure 2 The complete schematic diagram of the centralized emergency power supply device for the wind power station also includes: a fifth circuit breaker QF5. The first terminal of the fifth circuit breaker QF5 is connected to the output terminal of the gas-insulated ring main unit 1; the second terminal of the fifth circuit breaker QF5 is connected to the wind power station bus voltage network 5.

[0058] In addition, the design of centralized emergency power supply devices for wind power stations may also include: a system controller and a wireless device. The signal terminals of the system controller are connected to the signal terminals of the gas-insulated ring main unit 1, the step-up transformer unit 2, and the low-voltage compensation unit 3, for receiving relevant parameters from these units. The control terminals of the system controller are connected to the control terminals of the first circuit breaker QF1 through the fifth circuit breaker QF5 and the ring network load switch QL1, for controlling the on / off states of these circuit breakers. The transmission terminal of the system controller is connected to the wireless device for communication with remote operators.

[0059] Based on the above structure, the working principle of its centralized emergency power supply device for wind power stations is as follows:

[0060] Step 1: When the wind turbine generator is disconnected from the power grid, and the operator confirms that the 35kV main transformer incoming line switch on the low-voltage side of the wind power station is open, it can be understood that the wind power station bus voltage grid is in an abnormal state. At the same time, the operator remotely starts the diesel generator 4 and confirms that the first circuit breaker QF1 connected to the first compensation cabinet 32 ​​and the second circuit breaker QF2 connected to the second compensation cabinet 33 are in the closed state. After the output voltage of the diesel generator 4 stabilizes, the operator remotely closes the third circuit breaker QF3 connected to the diesel generator 4.

[0061] Step 2: When the operator confirms that the 0.4KW voltage of the low-voltage bus voltage network 31 in the low-voltage compensation cabinet 3 is stable, the operator remotely closes the fourth circuit breaker QF4 on the low-voltage side of the step-up transformer 21.

[0062] Step 3: After the step-up transformer 21 is energized and stabilized, remotely control the closing of the ring network load switch QL1 inside the gas-insulated ring network cabinet 1.

[0063] Step 4: At this point, the incoming line side of the 35kV reserved bay circuit breaker in the substation is energized. The operator confirms the voltage amplitude, frequency, and voltage imbalance, and remotely closes the fifth circuit breaker QF5 in the 35kV reserved bay. The 35kV reserved bay busbar is then charged, and power is sequentially returned to all wind turbine transformer substations via the collector lines, thus supplying power to the yaw system.

[0064] Step 5: After the wind farm and the power grid are re-established, and after confirmation by the operators, the fifth circuit breaker QF5 of the reserved 35kV bay at the substation is disconnected in sequence, followed by the ring network load switch QL1, the fourth circuit breaker QF4 of the low-voltage side incoming line of the step-up transformer, the third circuit breaker QF3 connected to the diesel generator 4, the first circuit breaker QF1 connected to the first compensation cabinet 32, and the second circuit breaker QF2 connected to the second compensation cabinet 33. The start-up of the diesel generator 4 is then stopped.

[0065] In this design, the lighting devices, emergency devices, fire-fighting devices, lightning protection devices, environmental control devices, safety escape devices, and grounding devices in different systems will all achieve their corresponding functions of lighting, emergency response, fire-fighting, lightning protection, environmental control, escape, and grounding. It should be noted that switches can be appropriately added to the connected circuits of the lighting devices, emergency devices, fire-fighting devices, lightning protection devices, environmental control devices, safety escape devices, and grounding devices. When the switch is closed, the corresponding device will activate its corresponding function.

[0066] It should also be noted that all steps 1-5 above, involving operator confirmation, can be remotely and automatically controlled via the system controller and wireless devices. The relevant parameters of the gas-insulated ring main unit 1, the step-up transformer 2, and the low-voltage compensation cabinet 3 are sent to the system controller. The system controller automatically determines the parameters and then sends them to the corresponding operator via wireless devices. The operator can then remotely control the corresponding circuit breakers and ring main load switches via wireless devices and the system controller.

[0067] Therefore, the centralized emergency power supply device for wind power stations provided in this application has the following advantages:

[0068] 1. When the wind turbine generator is disconnected from the power grid, all wind turbine generators in the wind power station will simultaneously perform yaw anti-typhoon operation (using the centralized emergency power supply device provided by the wind power station itself).

[0069] 2. After the wind farm is disconnected from the power grid, the wind turbines can quickly enter typhoon-resistant mode, shortening the typhoon resistance time and avoiding the risk of turbine failure caused by typhoons; it enhances the wind power station's ability to withstand extreme weather, ensures continuous power supply through centralized dispatching, and guarantees the continuous online operation of wind turbines in typhoon-resistant mode through a centralized typhoon emergency power supply system. It ensures that core functions are not affected by single-point failures during extreme weather, reduces the risk of typhoon damage to wind turbines, prevents fault propagation, and protects the overall power station equipment.

[0070] 3. Reduce the technical requirements for normal operation, maintenance, and mechanical aspects of wind turbines after the wind farm has been disconnected from the power grid for a long time.

[0071] On the other hand, this application also provides an electronic device, including the above-mentioned centralized emergency power supply device for wind power stations, and has the same beneficial effects.

[0072] Since the embodiments of the electronic equipment provided in this application are the same as the embodiments of the centralized emergency power supply device for wind power stations described above, this application will not repeat them here.

[0073] The above provides a detailed description of a centralized emergency power supply device and equipment for wind power stations provided by this utility model. The various embodiments in the specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the descriptions are relatively simple, and relevant parts can be referred to the method section. It should be noted that those skilled in the art can make several improvements and modifications to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

[0074] It should also be noted that, in this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A centralized emergency power supply device for wind power stations, applied in outdoor containers or substation distribution rooms, characterized in that, include: Gas-insulated ring main units, step-up transformer cabinets, low-voltage compensation cabinets, and diesel generators; The output terminal of the diesel generator is connected to the low-voltage bus voltage network in the low-voltage compensation cabinet, and is used to send power supply voltage to the low-voltage compensation cabinet. The output terminal of the low-voltage compensation cabinet is connected to the input terminal of the step-up transformer cabinet, and is used to send the power supply voltage to the step-up transformer cabinet after low-voltage compensation. The output terminal of the step-up transformer is connected to the input terminal of the gas-insulated ring main unit, and is used to step up the power supply voltage after low-voltage compensation and send it to the gas-insulated ring main unit. The output terminal of the gas-insulated ring main unit is connected to the bus voltage grid of the wind power station. It is used to provide the boosted power supply voltage to the bus voltage grid of the wind power station when the bus voltage grid is in an abnormal state, so that the wind power station bus can supply power to the connected wind turbine generators.

2. The centralized emergency power supply device for wind power stations according to claim 1, characterized in that, The low-voltage compensation cabinet includes: a first compensation cabinet, a second compensation cabinet, a first circuit breaker, a second circuit breaker, and a third circuit breaker; Wherein, the connection end of the first compensation cabinet is connected to the connection end of the second compensation cabinet; The control terminal of the first compensation cabinet is connected to the first terminal of the first circuit breaker; The control terminal of the second compensation cabinet is connected to the first terminal of the second circuit breaker; The first terminal of the third circuit breaker is connected to the output terminal of the diesel generator as the input terminal of the low-voltage compensation cabinet. The second terminal of the first circuit breaker, the second terminal of the second circuit breaker, and the second terminal of the third circuit breaker are all connected to the low-voltage bus voltage network.

3. The centralized emergency power supply device for wind power stations according to claim 2, characterized in that, The low-voltage compensation cabinet also includes: a fourth circuit breaker; The first terminal of the fourth circuit breaker is connected to the low-voltage bus voltage network in the low-voltage compensation cabinet. The second end of the fourth circuit breaker is connected to the step-up transformer cabinet.

4. The centralized emergency power supply device for wind power stations according to claim 3, characterized in that, The low-voltage compensation cabinet also includes: a first lighting device, a first emergency device, a first fire-fighting device, and a first lightning protection device; The input terminals of the first lighting device, the first emergency device, the first fire-fighting device, and the first lightning protection device are connected to each other and are all connected to the first terminal of the fourth circuit breaker. The output terminals of the first lighting device, the first emergency device, the first fire-fighting device, and the first lightning protection device are connected together and connected to the second terminal of the fourth circuit breaker.

5. The centralized emergency power supply device for wind power stations according to claim 1, characterized in that, The step-up transformer cabinet includes: a step-up transformer; The first end of the step-up transformer serves as the input end of the step-up transformer cabinet and is connected to the output end of the low-voltage compensation cabinet. The second end of the step-up transformer is connected to the input end of the gas-insulated ring main unit as the output end of the step-up transformer cabinet.

6. The centralized emergency power supply device for wind power stations according to claim 5, characterized in that, The step-up transformer also includes: a second lighting device, a second emergency device, a second fire-fighting device, and a second lightning protection device; The input terminals of the second lighting device, the second emergency device, the second fire-fighting device, and the second lightning protection device are connected to each other and are all connected to the first terminal of the step-up transformer. The output terminals of the second lighting device, the second emergency device, the second fire-fighting device, and the second lightning protection device are connected together and connected to the second terminal of the step-up transformer.

7. The centralized emergency power supply device for wind power stations according to claim 1, characterized in that, The gas-insulated ring main unit includes: a ring main unit and a ring main load switch; The first terminal of the ring network load switch is connected to the input terminal of the ring network cabinet, and together they serve as the input terminal of the gas-insulated ring network cabinet and are connected to the output terminal of the step-up transformer cabinet. The second terminal of the ring network load switch is connected to the output terminal of the ring network cabinet, and together they serve as the output terminal of the gas-insulated ring network cabinet, which is connected to the bus voltage grid of the wind power station.

8. The centralized emergency power supply device for wind power stations according to claim 7, characterized in that, The gas-insulated ring main unit also includes: a third lighting device, a third emergency device, a third fire-fighting device, and a third lightning protection device; The input terminals of the third lighting device, the third emergency device, the third fire protection device, and the third lightning protection device are connected to each other, and are also connected to the first terminal of the ring network load switch and the input terminal of the ring network cabinet. The output terminals of the third lighting device, the third emergency device, the third fire-fighting device, and the third lightning protection device are connected together, and are also connected to the second terminal of the ring network load switch and the output terminal of the ring network cabinet.

9. The centralized emergency power supply device for wind power stations according to claim 1, characterized in that, Also includes: Fifth circuit breaker; The first end of the fifth circuit breaker is connected to the output end of the gas-insulated ring main unit. The second terminal of the fifth circuit breaker is connected to the bus voltage grid of the wind power station.

10. An electronic device, characterized in that, Includes the centralized emergency power supply device for wind power stations as described in any one of claims 1-9.

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