Photovoltaic transformer substation

Abstract

The utility model relates to a photovoltaic transformer substation, and relates to the technical field of photovoltaic transformer substations, the photovoltaic transformer substation comprises a main transformer (1), a GIS (gas insulated switchgear) (2), a SVG (static var generator) and an energy storage device (4), the high-voltage side of the main transformer (1) is connected with the GIS (2), and the low-voltage side of the main transformer (1) is connected with the SVG (3) and the energy storage device (4); the GIS (2) is used for protecting the main transformer (1); the SVG (3) is used for controlling the voltage within a preset range; the energy storage device (4) is used for storing and releasing electric energy. According to the photovoltaic substation, through the synergistic effect of the main transformer, the GIS, the SVG and the energy storage equipment, the stability, reliability and flexibility of a power grid can be improved, and meanwhile the utilization efficiency of photovoltaic power generation can also be improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of photovoltaic substations, and in particular to a photovoltaic substation. Background Art

[0002] There is a certain contradiction between the current energy demand and supply. Developing a more efficient, environmentally friendly and sustainable energy supply method has become an important task. As a representative of clean and renewable energy, photovoltaic power generation technology is becoming increasingly prominent in the energy field. As a key component of the photovoltaic power generation system, the photovoltaic substation technology is also constantly developing. However, in the related technologies, the photovoltaic substation has a single structure and is not suitable for the grid-connected needs of photovoltaic substation, and the stability and reliability of the power grid are low. Utility Model Content

[0003] The purpose of the present disclosure is to provide a photovoltaic substation, which can meet the grid connection requirements of photovoltaic power generation and improve the stability and reliability of the power grid.

[0004] In order to achieve the above object, the present disclosure provides a photovoltaic substation, including a main transformer, a gas insulated switchgear GIS, a static VAR generator SVG and an energy storage device, wherein the high voltage side of the main transformer is connected to the GIS, and the low voltage side of the main transformer is connected to both the SVG and the energy storage device;

[0005] The GIS is used to protect the main transformer;

[0006] The SVG is used to control the voltage within a preset range;

[0007] The energy storage device is used to store and release electrical energy.

[0008] Optionally, the energy storage device includes a battery compartment and a bidirectional converter compartment.

[0009] Optionally, the photovoltaic substation further includes a prefabricated cabin for primary equipment, a prefabricated cabin for secondary equipment and a prefabricated cabin for a station transformer, the high voltage side of the main transformer is connected to the prefabricated cabin for primary equipment, the low voltage side of the main transformer is connected to the prefabricated cabin for secondary equipment, and the prefabricated cabin for secondary equipment is connected to the low voltage side of the station transformer;

[0010] The secondary equipment prefabricated cabin is used to monitor the photovoltaic substation.

[0011] Optionally, the secondary equipment prefabricated cabin includes a power panel, a battery room, a dispatching cabin and a relay protection cabin.

[0012] Optionally, the main transformer, the primary equipment prefabricated cabin, the secondary equipment prefabricated cabin, the station transformer prefabricated cabin and the SVG are arranged in sequence, the station transformer prefabricated cabin is arranged on the first side of the SVG, the primary equipment prefabricated cabin is arranged on the first side of the main transformer, and the energy storage device is arranged on the second side of the main transformer.

[0013] Optionally, the photovoltaic substation further includes an intra-station road surrounding the main transformer, the primary equipment prefabricated cabin, the secondary equipment prefabricated cabin, the station transformer prefabricated cabin and the SVG.

[0014] Optionally, the photovoltaic substation further includes an electric telescopic door arranged between the third side of the main transformer and the road within the station.

[0015] Optionally, the photovoltaic substation further includes an emergency oil pool, which is arranged on one side of the power interval between the GIS and the third side of the main transformer.

[0016] Optionally, the photovoltaic substation also includes a living and office cabin, a sewage treatment device, a regulating tank, an independent lightning rod, a life and fire pump room and a hazardous waste room.

[0017] Optionally, the living and office cabin is arranged on the second side of the SVG, and the life and fire pump room and the hazardous waste room are both arranged on the other side of the living and office cabin.

[0018] Through the above technical solution, the main transformer can be protected by the gas-insulated switchgear, thereby improving the reliability of the power grid; the voltage can be adjusted in real time by the static VAR generator so that the voltage remains within the preset range, thereby improving the stability of the power grid, and the static VAR generator can also optimize reactive power and reduce power loss, thereby improving energy utilization efficiency; the excess electric energy can be stored by the energy storage device and released at peak demand to buffer the fluctuation of power supply, further improving the stability of the power grid and the utilization efficiency of energy. Therefore, the photovoltaic substation can meet the grid-connected demand of photovoltaic power generation, improve the stability and reliability of the power grid, and at the same time improve the utilization efficiency of energy.

[0019] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0021] Figure 1 is a block diagram of a photovoltaic substation according to an exemplary embodiment of the present disclosure;

[0022] Figure 2 The figure is a structural diagram of a photovoltaic substation according to an exemplary embodiment of the present disclosure.

[0023] Description of Reference Numerals

[0024] Main transformer 1, gas insulated switchgear 2, static VAR generator 3, energy storage equipment 4, battery compartment 41, bidirectional converter compartment 42, primary equipment prefabricated compartment 5, secondary equipment prefabricated compartment 6, power supply panel 61, battery room 62, dispatching compartment 63, relay protection compartment 64, station transformer prefabricated compartment 7, station road 8, electric telescopic door 9, accident oil pool 10, power interval 11, living and office compartment 12, sewage treatment device 13, regulating tank 14, independent lightning rod 15, life and fire pump room 16, hazardous waste room 17. DETAILED DESCRIPTION

[0025] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0026] The terms "first", "second", etc. used in the present disclosure are to distinguish one element from another element and have no order or importance. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0027] Figure 1 is a block diagram of a photovoltaic substation according to an exemplary embodiment of the present disclosure, referring to Figure 1 The photovoltaic substation includes a main transformer 1, a GIS2 (Gas-Insulated Switchgear), a SVG3 (Static Var Generator) and an energy storage device 4. The high-voltage side of the main transformer 1 is connected to the GIS2, and the low-voltage side of the main transformer 1 is connected to both the SVG3 and the energy storage device 4; the GIS2 is used to protect the main transformer 1; the SVG3 is used to control the voltage within a preset range; and the energy storage device 4 is used to store and release electric energy.

[0028] Here, the main transformer 1 can increase the voltage in the low-voltage transmission line to a higher voltage level in order to reduce power loss during transmission and support longer-distance power transmission. GIS2 is used to protect the main transformer 1 and can quickly cut off the fault current to prevent the fault from damaging the main transformer 1. In addition, GIS2 is small in size and has good insulation performance, which is suitable for use in harsh environments and can also improve the reliability and safety of the power grid. SVG3 controls the voltage within a preset range and adjusts the voltage by absorbing or outputting reactive power, thereby improving the stability of the power grid. Here, the preset range refers to a reasonable voltage range determined in advance by the power grid operator based on actual needs. In addition, SVG3 can also improve the power factor, reduce active power loss, and improve energy efficiency.

[0029] It should be understood that photovoltaic power generation is affected by factors such as weather and clouds, and may fluctuate greatly. Energy storage device 4 is used to store and release electrical energy, which can buffer the fluctuation of photovoltaic power generation and improve the stability of the power grid. The power grid load has the characteristics of daytime peak and nighttime trough. In certain periods of time, photovoltaic power generation may exceed the power grid's absorption capacity. Energy storage device 4 can also store excess electrical energy when the power grid demand is low, and release it when the demand is peak, thereby improving energy utilization efficiency.

[0030] Through the above technical solution, the main transformer 1 can be protected by the gas-insulated switchgear, thereby improving the reliability of the power grid; the voltage can be adjusted in real time by the static VAR generator so that the voltage is kept within the preset range, thereby improving the stability of the power grid, and the static VAR generator can also optimize reactive power and reduce power loss, thereby improving energy utilization efficiency; the excess electric energy can be stored by the energy storage device 4 and released at peak demand to buffer the fluctuation of power supply and further improve the stability of the power grid and the utilization efficiency of energy. Therefore, the photovoltaic substation can meet the grid connection requirements of photovoltaic power generation, improve the stability and reliability of the power grid, and at the same time improve the utilization efficiency of energy.

[0031] Figure 2 is a structural diagram of a photovoltaic substation according to an exemplary embodiment of the present disclosure, referring to Figure 2 In a possible embodiment, the energy storage device 4 includes a battery compartment 41 and a bidirectional converter compartment 42 .

[0032] Here, the battery compartment 41 can store electrical energy, provide power support for the entire energy storage device 4, absorb excess electrical energy when the grid demand is low, and release electrical energy at peak times. The battery compartment 41 can specifically be a lithium-ion battery pack, a lead-acid battery pack, a sodium-sulfur battery pack, etc. The battery compartment 41 may include a battery module, a battery management system, a temperature control system, a fire monitoring system, etc. The battery compartment 41 can be connected to the bidirectional converter compartment 42 via a DC bus, and the bidirectional converter compartment 42 is then connected to the main transformer 1 via an AC bus.

[0033] The bidirectional converter compartment 42 can realize bidirectional power conversion between the battery compartment 41 and the AC power grid, and control the charging and discharging process of electric energy. The bidirectional converter compartment 42 can specifically be a power electronic conversion device based on IGBT (Insulated Gate Bipolar Transistor) or MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor), or include multiple parallel converter modules. The bidirectional converter compartment 42 can include a bidirectional converter, a filter, a control system, an isolation transformer, etc.

[0034] For example, the energy storage device 4 may include 4 groups of battery compartments 41 and 4 groups of bidirectional converter compartments 42, wherein the 4 groups of bidirectional converter compartments 42 may be arranged in a 2x2 matrix, and the battery compartments 41 may be placed next to the 4 groups of bidirectional converter compartments 42. This arrangement can make the entire energy storage device 4 more compact and orderly, and also facilitate the connection and maintenance between the battery compartments 41 and the bidirectional converter compartments 42.

[0035] Reference Figure 2 In a possible embodiment, the photovoltaic substation further includes a primary equipment prefabricated cabin 5, a secondary equipment prefabricated cabin 6 and a station transformer prefabricated cabin 7, the high voltage side of the main transformer 1 is connected to the primary equipment prefabricated cabin 5, the low voltage side of the main transformer 1 is connected to the secondary equipment prefabricated cabin 6, and the secondary equipment prefabricated cabin 6 is connected to the low voltage side of the station transformer; the secondary equipment prefabricated cabin 6 is used to monitor the photovoltaic substation.

[0036] Here, the primary equipment prefabricated cabin 5 can centrally install and protect the primary equipment of the photovoltaic substation, such as high-voltage switchgear, lightning arrester, current transformer, voltage transformer, etc. The secondary equipment prefabricated cabin 6 can centrally install and protect the secondary equipment of the photovoltaic substation, such as protection relays, monitoring equipment, communication equipment, etc. The station transformer prefabricated cabin 7 can centrally install and protect the station transformer, thereby providing auxiliary power for the photovoltaic substation. The primary equipment prefabricated cabin 5, the secondary equipment prefabricated cabin 6 and the station transformer prefabricated cabin 7 can specifically be prefabricated metal enclosed equipment cabins.

[0037] The secondary equipment prefabricated cabin 6 can also monitor the photovoltaic substation. Specifically, monitoring equipment and monitoring analysis systems, such as protection relays, measurement and control devices, etc., can be centrally installed in the secondary equipment prefabricated cabin 6 to monitor the operating status of photovoltaic substation equipment in real time, such as voltage, current, temperature, etc. The monitoring equipment can transmit the collected various operating data to the monitoring and analysis system in the secondary equipment prefabricated cabin 6. The monitoring and analysis system can analyze the operating data in real time and issue an alarm signal in time when an abnormal situation is found.

[0038] The design of the prefabricated cabin can improve the standardization and modularization of the equipment of the photovoltaic substation, which is conducive to improving the construction efficiency and operation reliability. Among them, the secondary equipment prefabricated cabin 6 can monitor the photovoltaic substation and improve the safety and stability of the photovoltaic substation.

[0039] Reference Figure 2 In a possible embodiment, the secondary equipment prefabricated cabin 6 includes a power panel 61, a battery room 62, a dispatching cabin 63 and a relay protection cabin 64.

[0040] Here, the power panel 61 can provide power supply for various equipment in the secondary equipment prefabricated cabin 6. The power panel 61 can be a distribution board or a distribution cabinet, which can include a circuit breaker, an isolating switch, a voltmeter, an ammeter, etc. The power panel 61 can be connected to the low-voltage side of the station transformer to supply power to the entire secondary equipment prefabricated cabin 6. It is also connected to the monitoring equipment of the secondary equipment prefabricated cabin 6.

[0041] The battery room 62 can provide backup power for the equipment in the secondary equipment prefabricated cabin 6, ensuring that the equipment can still operate normally when the main power fails. The battery room 62 is connected to the power panel 61 and automatically switches to the backup power when the main power fails.

[0042] The dispatching cabin 63 can provide a monitoring and control operation interface for the photovoltaic substation staff, and realize the centralized dispatching management of the photovoltaic substation. The dispatching cabin 63 can be configured with a monitoring display screen, an operating console containing monitoring software, communication equipment, etc. The dispatching cabin 63 is connected to the monitoring equipment and monitoring analysis system in the secondary equipment prefabricated cabin 6, and can realize the monitoring and control of the photovoltaic substation.

[0043] The relay protection cabin 64 can centrally install and protect various relay protection devices of the photovoltaic substation.

[0044] Through the coordinated work of the above-mentioned equipment, the secondary equipment prefabricated cabin 6 can monitor the entire photovoltaic substation.

[0045] In a possible embodiment, the main transformer 1, the primary equipment prefabricated cabin 5, the secondary equipment prefabricated cabin 6, the station transformer prefabricated cabin 7 and the SVG3 are arranged in sequence, the station transformer prefabricated cabin is arranged on a first side of the SVG3, the primary equipment prefabricated cabin 5 is arranged on a first side of the main transformer 1, and the energy storage device 4 is arranged on a second side of the main transformer 1.

[0046] For example, refer to Figure 2 , relative to the photovoltaic substation, set Figure 2 The four directions are front, back, left and right. The layout of the main transformer 1, the primary equipment prefabricated cabin 5, the secondary equipment prefabricated cabin 6, the station transformer prefabricated cabin 7 and SVG3 inside the photovoltaic substation is arranged from back to front. The station transformer prefabricated cabin 7 is arranged on the first side of SVG3, which means that the station transformer prefabricated cabin 7 is located on the rear side of SVG3. The primary equipment prefabricated cabin 5 is arranged on the first side of the main transformer 1, which means that the primary equipment prefabricated cabin 5 is located on the front side of the main transformer 1. The energy storage device 4 is arranged on the second side of the main transformer 1, which means that the energy storage device 4 is located on the left side of the main transformer 1.

[0047] In the above layout, the main transformer 1 is the core equipment, the primary equipment prefabricated cabin 5 is arranged in front of it, and the energy storage equipment 4 is arranged on its left side to facilitate the access and output of electricity. The secondary equipment prefabricated cabin 6 is arranged in the middle of the above equipment to facilitate the centralized management of the photovoltaic substation. In this way, not only the safety and reliability of the photovoltaic substation can be improved, but also the equipment management and operation and maintenance can be facilitated.

[0048] Reference Figure 2 In a possible embodiment, the photovoltaic substation also includes an intra-station road 8 surrounding the main transformer 1, the primary equipment prefabricated cabin 5, the secondary equipment prefabricated cabin 6, the station transformer prefabricated cabin 7 and the SVG3.

[0049] Here, the station road 8 surrounding the main transformer 1, the primary equipment prefabricated cabin 5, the secondary equipment prefabricated cabin 6, the station transformer prefabricated cabin 7 and the SVG 3 can facilitate the entry and exit of the staff and maintenance vehicles, thereby improving the convenience of equipment maintenance.

[0050] In a possible embodiment, the photovoltaic substation further includes an electric telescopic door 9 arranged between the third side of the main transformer 1 and the in-station road 8 .

[0051] Here, protective facilities are arranged around the energy storage device 4, SVG 3, station transformer cabin, secondary equipment prefabricated cabin 6, primary equipment prefabricated cabin 5 and main transformer 1, and an electric telescopic door 9 is arranged on the protective facilities between the third side (right side) of the main transformer 1 and the station road 8. Figure 2 A door is provided on the protective facilities on the right side of the front side of the energy storage device 4, the protective facilities on the front side of the SVG3, and the protective facilities on the right side of the station transformer cabin to facilitate the entry and exit of staff and maintenance vehicles.

[0052] In a possible embodiment, the photovoltaic substation further includes an emergency oil pool 10 , and the emergency oil pool 10 is disposed on one side of the power interval 11 between the GIS 2 and the third side of the main transformer 1 .

[0053] Here, the accident oil pool 10 can collect and store the insulating oil leaked when the main transformer 1 or other oil-immersed equipment of the photovoltaic substation fails. The accident oil pool 10 can include an oil collecting pool, a flow interception device, an oil level monitoring device, etc. The oil collecting pool can collect the leaked insulating oil, the flow interception device can block the leaked oil from entering the external environment, and the oil level monitoring device can detect and alarm the oil level change. The power bay 11 is a space structure used to isolate and protect other equipment in the photovoltaic substation.

[0054] The accident oil pool 10 is arranged near the main transformer 1, so that the leaked oil can be collected more conveniently. The accident oil pool 10 is arranged inside the power compartment 11, so that the oil can be effectively blocked from leaking. The accident oil pool 10 is far away from the road 8 in the station and other equipment of the photovoltaic substation, so as to reduce the impact on the normal operation of the photovoltaic substation.

[0055] In a possible embodiment, the photovoltaic substation also includes a living and office cabin 12, a sewage treatment device 13, a regulating tank 14, an independent lightning rod 15, a life and fire pump room 16 and a hazardous waste room 17.

[0056] Here, the living and office cabin 12 refers to the living and office place for the staff of the photovoltaic substation, including offices, lounges, etc., which are connected to other areas of the photovoltaic substation through the station road 8. The sewage treatment device 13 is used to treat the domestic sewage and a small amount of industrial wastewater generated by the photovoltaic substation, and may include a sedimentation tank, a biochemical treatment device, etc. The regulating tank 14 is used to temporarily store and regulate the rainwater runoff of the photovoltaic substation to prevent the photovoltaic substation equipment from being eroded during heavy rain. The regulating tank 14 can be designed to be buried or above-ground and equipped with corresponding drainage facilities. The independent lightning rod 15 is used to protect the photovoltaic substation from lightning strikes, and the independent lightning rod 15 is connected to the grounding grid in the station through a grounding device. The life and fire pump room 16 is used to house the fire water supply pump and other equipment of the photovoltaic substation to provide sufficient fire water in the event of a fire. Reference Figure 2 A fire fighting room can also be arranged on the left side of the main transformer 1. The hazardous waste room 17 is used to temporarily store a small amount of hazardous waste generated by the photovoltaic substation, such as waste transformer oil.

[0057] The above-mentioned auxiliary facilities can further improve the safety and reliability of photovoltaic substations.

[0058] In a possible embodiment, the living and office cabin 12 is arranged on the second side of the SVG3, and the life and disinfection pump room 16 and the hazardous waste room 17 are both arranged on the other side of the living and office cabin 12.

[0059] Specifically, refer to Figure 2 The living and office cabin 12 is arranged on the second side of SVG3, which means that the living and office cabin 12 is arranged on the front side of SVG3, which is convenient for the staff to enter and exit and manage the power equipment of the photovoltaic substation. The life and fire pump room 16 and the hazardous waste room 17 are both arranged on the other side of the living and office cabin 12, and the life and fire pump room 16 and the hazardous waste room 17 are both arranged on the left side of the living and office cabin 12, which is convenient for the staff to conduct daily inspections and emergency treatment.

[0060] Therefore, through the above layout of power equipment and auxiliary facilities, functional zoning and dynamic line optimization can be achieved, thereby improving the operation efficiency and maintenance convenience of the photovoltaic substation. Among them, GIS2 protects the main transformer 1, SVG3 adjusts the voltage, and the energy storage device 4 realizes the storage and release of electric energy, which can improve the coordination and operation efficiency of the photovoltaic substation. Secondly, the prefabricated cabin design, including the primary equipment prefabricated cabin 5, the secondary equipment prefabricated cabin 6 and the station transformer prefabricated cabin 7, can improve the degree of integration. In addition, the internal layout of the photovoltaic substation isolates the power equipment from the living and office areas, which can reduce the risk of personnel contacting high-voltage equipment; an accident oil pool 10 is set to deal with leakage; and the living and office areas are reasonably arranged to achieve functional zoning and environmental protection. In summary, through the layout and setting of the above photovoltaic substation, the grid connection requirements of photovoltaic power generation can be met, the safety, stability and reliability of the power grid can be improved, and the utilization efficiency of energy can be improved.

[0061] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0062] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0063] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A photovoltaic substation, characterized in that: The invention comprises a main transformer (1), a gas insulated switchgear GIS (2), a static VAR generator SVG (3) and an energy storage device (4), wherein the high voltage side of the main transformer (1) is connected to the GIS (2), and the low voltage side of the main transformer (1) is connected to both the SVG (3) and the energy storage device (4); The GIS (2) is used to protect the main transformer (1); The SVG (3) is used to control the voltage within a preset range; The energy storage device (4) is used to store and release electrical energy.

2. The photovoltaic substation according to claim 1, characterized in that: The energy storage device (4) comprises a battery compartment (41) and a bidirectional converter compartment (42).

3. The photovoltaic substation according to claim 1, characterized in that: It also comprises a primary equipment prefabricated cabin (5), a secondary equipment prefabricated cabin (6) and a station transformer prefabricated cabin (7), the high voltage side of the main transformer (1) being connected to the primary equipment prefabricated cabin (5), the low voltage side of the main transformer (1) being connected to the secondary equipment prefabricated cabin (6), and the secondary equipment prefabricated cabin (6) being connected to the low voltage side of the station transformer; The secondary equipment prefabricated cabin (6) is used to monitor the photovoltaic substation.

4. The photovoltaic substation according to claim 3, characterized in that: The secondary equipment prefabricated cabin (6) comprises a power supply panel (61), a battery room (62), a dispatching cabin (63) and a relay protection cabin (64).

5. The photovoltaic substation according to claim 3, characterized in that: The main transformer (1), the primary equipment prefabricated cabin (5), the secondary equipment prefabricated cabin (6), the station transformer prefabricated cabin (7), and the SVG (3) are arranged in sequence; the station transformer prefabricated cabin (7) is arranged on a first side of the SVG (3); the primary equipment prefabricated cabin (5) is arranged on a first side of the main transformer (1); and the energy storage device (4) is arranged on a second side of the main transformer (1).

6. The photovoltaic substation according to claim 3, characterized in that: It also includes an intra-station road (8) surrounding the main transformer (1), the primary equipment prefabricated cabin (5), the secondary equipment prefabricated cabin (6), the station transformer prefabricated cabin (7) and the SVG (3).

7. The photovoltaic substation according to claim 6, characterized in that: It also includes an electric telescopic door (9) arranged between the third side of the main transformer (1) and the in-station road (8).

8. The photovoltaic substation according to any one of claims 1 to 7, characterized in that: It also includes an emergency oil pool (10), wherein the emergency oil pool (10) is arranged on one side of the power interval (11) between the GIS (2) and the third side of the main transformer (1).

9. The photovoltaic substation according to any one of claims 1 to 7, characterized in that: It also includes a living and office cabin (12), a sewage treatment device (13), a regulating tank (14), an independent lightning rod (15), a life and fire pump room (16) and a hazardous waste room (17).

10. The photovoltaic substation according to claim 9, characterized in that: The living and office cabin (12) is arranged on a second side of the SVG (3), and the bio-disposal pump room (16) and the hazardous waste room (17) are both arranged on the other side of the living and office cabin (12).

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