High-altitude photovoltaic power generation Huai box-type substation
By designing a high-altitude photovoltaic power generation Huaban substation, multiple technical challenges in the construction of substations in high-altitude areas have been solved, and efficient operation of substations in high-altitude environments and effective utilization of clean energy are achieved.
Patent Information
- Application Number
- CN202323641601.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-29
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2033-12-29
AI Technical Summary
There are multiple technical challenges in large-scale construction of substations suitable for solar photovoltaic power plants in high-altitude areas, including low-pressure hypoxia, earthquake resistance, large-scale transportation, low temperature resistance, strong solar radiation and large temperature differences, which makes construction extremely difficult.
Design a high-altitude photovoltaic power generation Hua-type box substation, which divides the high and low voltage chamber partitions in the box, sets the transformer control panel, and sets the transformer and the box on the same channel steel bottom frame to achieve natural ventilation and heat dissipation. Adapt to high altitude environment.
This design improves the adaptability and reliability of the substation in high-altitude areas, promotes the utilization efficiency of clean energy, vigorously develops and utilizes clean resources in western my country, and expands the application scope of box substations.
Smart Images
Figure CN222531126U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a substation, in particular to a Huashi box-type substation for high-altitude photovoltaic power generation. Background Art
[0002] The high and low values of the total annual solar radiation in China are distributed between 22° and 35° north latitude, and the high-value center is on the Qinghai-Tibet Plateau. The reasons why the Qinghai-Tibet Plateau can become the high-value center of solar radiation are as follows: 1. The sunshine duration is long, which includes both the daily day length and the large number of sunny days throughout the year; 2. The solar radiation is strong, the solar altitude angle is large, and the latitude is low; 3. The industrial pollution is less, especially the air pollution and haze are less; 4. The terrain altitude is high, the air is thin and clean, the content of dust and water vapor is less, the transparency is good, the energy loss is less when the sunlight passes through the atmosphere, and the solar radiation energy reaching the ground is more. The solar energy resources on the Qinghai-Tibet Plateau are extremely rich, which can not only be used for cooking and boiling water, but also for power generation, lighting, heating, etc.
[0003] The altitude of the western plateau region in China is high, with an average altitude of about 4,000 meters. It is sunny and has a long sunshine duration. Using solar panels to generate electricity is the most economical and clean new energy technology.
[0004] When designing the construction of existing substations, multiple impacts such as low air pressure and hypoxia, earthquake resistance, large-piece transportation, low temperature resistance, strong solar radiation, and large temperature difference in high-altitude areas need to be considered. Therefore, it is extremely difficult to大规模 construct substations adapted to solar photovoltaic power stations in high-altitude areas. Content of the Utility Model
[0005] The purpose of the utility model is to overcome the defects of the prior art and provide a Huashi box-type substation for high-altitude photovoltaic power generation, which can solve the problem of大规模 constructing substations adapted to solar photovoltaic power stations in high-altitude areas, thereby improving the efficiency of using clean new energy solar photovoltaic power generation and enabling the great development and utilization of clean resources in the western region of China.
[0006] The purpose of the utility model is realized as follows: A Huashi box-type substation for high-altitude photovoltaic power generation includes a box body and a transformer. The box body is divided into a high-voltage chamber and a low-voltage chamber by a high- and low-voltage chamber partition; a large transformer control panel is arranged on one side wall of the box body; the main part of the transformer is connected to the side wall of the box body where the large transformer control panel is arranged; the high-voltage chamber, the low-voltage chamber and the transformer are arranged in a "pin" shape; high-voltage switch equipment is arranged in the high-voltage chamber; low-voltage switch equipment, measurement and control and communication equipment, and operating power supply equipment are arranged in the low-voltage chamber; the transformer and the box body are arranged on the same channel steel bottom frame.
[0007] The present invention adopts the above technical solution, and compared with the prior art, the beneficial effects are as follows: the substation divides the box into a high-voltage chamber and a low-voltage chamber through a partition, which is convenient for the operation and regulation of the equipment; a transformer control panel is arranged on one side wall of the box; the main part of the transformer is connected to the side wall of the box with the transformer control panel, and the other three sides are exposed to the atmosphere, which can realize natural ventilation and heat dissipation; the new energy solar photovoltaic power generation technology is applied to the high-altitude areas in the western part of the motherland, and the development of western resources, especially the construction of new energy solar photovoltaic power stations, contributes to the early realization of the "dual carbon" goal through energy conservation and emission reduction. The application scope of the box-type substation has been expanded, and the utility model can be used for high-altitude wind power generation Chinese-style box-type substations.
[0008] As a further limitation of the present utility model, the high-voltage switchgear includes a high-voltage isolating switch cabinet and a vacuum load switch plus fuse combination cabinet; the high-voltage isolating switch cabinet is provided with an isolating switch, a lightning arrester and a live display sensor; the lightning arrester is connected to the high-voltage cable through a high-voltage lightning arrester connecting line; the vacuum load switch plus fuse combination cabinet is provided with a vacuum load switch, a high-voltage fuse, a grounding switch and a transformer high-voltage terminal; the vacuum load switch is connected to the transformer high-voltage terminal via a high-voltage busbar; the grounding switch is connected to the vacuum load switch; the isolating switch, vacuum load switch, high-voltage fuse and grounding switch all use large creepage support insulators.
[0009] As a further limitation of the present utility model, the low-voltage switchgear includes a low-voltage switch cabinet and a low-voltage control cabinet; a low-voltage circuit breaker and a plurality of low-voltage branch circuit breakers are arranged in the low-voltage switch cabinet, and the low-voltage circuit breaker is connected to the low-voltage terminal of the transformer through a low-voltage busbar via a soft connection; the low-voltage terminal of the transformer is arranged on a large transformer control panel; the circuit of each low-voltage branch circuit breaker is connected to the corresponding photovoltaic power generation inverter through a low-voltage cable entering and exiting from the bottom; a small dry-type transformer for providing equipment control power is arranged in the low-voltage control cabinet, and operation status data monitoring and transmission equipment, communication equipment and remote intelligent control equipment are also arranged.
[0010] As a further limitation of the present utility model, the main body of the transformer is connected to the side wall of the box; the other three sides of the main body of the transformer are equipped with a plate-type heat sink, and an oil conservator is provided on the top cover of the transformer, and the oil conservator is connected to the transformer oil tank through an oil pipe and a gas relay.
[0011] As a further limitation of the present utility model, a top cover is provided on the upper part of the box body, and the top cover and the surrounding side walls of the box body adopt a double-layer insulation structure; the top cover adopts a "human" shaped steep slope, and the slope of the "human" shaped steep slope is not less than 5°.
[0012] As a further limitation of the present invention, hanging hooks are arranged on both sides of the bottom frame, and two groups of hanging hooks are arranged on both sides of one end of the bottom frame corresponding to the box body at different distances from the end surface.
[0013] As a further limitation of the present utility model, the transformer control panel in the low-voltage room is provided with a transformer oil temperature gauge, a transformer tap switch, a transformer oil drain valve and a transformer low-voltage terminal. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 A side schematic diagram of the high pressure chamber of the utility model.
[0015] Figure 2 A schematic diagram of the plan layout of the utility model.
[0016] Figure 3 A side schematic diagram of the low-pressure chamber of the utility model.
[0017] Among them, 1 bottom frame, 2 flame retardant insulation material, 3 high-voltage room, 4 isolating switch, 5 box, 6 high-voltage room door, 7 external door hinge, 8 box top cover, 9 high-voltage fuse, 10 gas relay, 11 oil storage cabinet, 12 plate radiator, 13 climbing, 14 transformer, 15 transformer high-voltage terminal, 16 high-voltage busbar, 17 large creepage distance supporting insulator, 18 vacuum load switch, 19 grounding switch, 20 high-voltage cable, 21 high-voltage lightning arrester connecting line, 22 lightning arrester, 23 high- and low-voltage room partition, 24 small dry-type transformer, 25 low-voltage room, 26 low 1. Low-voltage control cabinet, 2. low-voltage switch cabinet, 2. low-voltage circuit breaker, 2. low-voltage busbar, 3. soft connection, 3. transformer low-voltage terminal, 3. oil temperature gauge of transformer, 3. transformer body, 3. transformer oil tank, 3. transformer control panel, 3. vacuum load switch and fuse combination cabinet, 3. high-voltage isolating switch cabinet, 3. live display sensor, 3. low-voltage cabinet instrument door, 4. low-voltage outdoor door, 4. door lock, 4. low-voltage horizontal busbar, 4. low-voltage branch circuit breaker, 4. low-voltage cable, 4. transformer tap changer, 4. transformer oil drain valve. DETAILED DESCRIPTION
[0018] like Figure 1-3A Huashi box-type substation for high-altitude photovoltaic power generation as shown, includes a box body 5, which is divided into a high-voltage chamber 3 and a low-voltage chamber 25 by a high-low voltage chamber partition 23; a large transformer control panel 35 is provided on one side wall of the box body 5; the main part of the transformer 14 is connected to the side wall of the box body 5 where the large transformer control panel 35 is provided; the high-voltage chamber 3, the low-voltage chamber 25 and the transformer 14 are arranged in a "pin" shape; the high-voltage chamber 3 is arranged at the lower right "opening" position of the "pin"-shaped box substation, the low-voltage chamber 25 is arranged at the lower left "opening" position of the "pin"-shaped box substation, and the transformer 14 is arranged at the upper "opening" position of the "pin"-shaped box substation; the large transformer control panel 35 is at the upper and lower combination part of the "pin" shape, and the control and indication components are arranged in the low-voltage chamber 25.
[0019] High-voltage switch equipment is provided in the high-voltage chamber 3; low-voltage switch equipment, measurement and control and communication equipment, and operating power supply equipment are provided in the low-voltage chamber 25; the transformer 14 and the box body 5 are arranged on the same channel steel bottom frame 1; lifting lugs 13 are provided on both sides of the bottom frame 1, and two groups of lifting lugs 13 are provided on both sides of one end of the bottom frame 1 corresponding to the box body 5 at different distances from the end face to facilitate adjusting the lifting center of gravity of the box-type substation and make the box-type substation convenient for overall hoisting; a top cover 8 is provided on the upper part of the box body 5, and the top cover 8 and the surrounding side walls of the box body 5 adopt a double-layer heat insulation structure, and the internal filler uses a flame-retardant heat insulation material 2 to ensure the heat insulation and fire prevention requirements of the box body 5; the top cover 8 adopts a "human"-shaped steep slope, and the slope of the "human"-shaped steep slope is not less than 5° to reduce the accumulation of rain and snow. The high-voltage chamber 3 and the low-voltage chamber 25 of the box body 5 open outwards on both sides, and sealing strips are added to the door edges of each outdoor door to make its protection level reach IP54 and above.
[0020] The high-voltage switchgear includes a high-voltage isolating switch cabinet 37 and a vacuum load switch plus fuse combination cabinet 36; the high-voltage isolating switch cabinet 37 is provided with an isolating switch 4, a lightning arrester 22 and a charged display sensor 38; the lightning arrester 22 is connected to the high-voltage cable 20 through a high-voltage lightning arrester connecting line 21; the vacuum load switch plus fuse combination cabinet 36 is provided with a vacuum load switch 18, a high-voltage fuse 9, a grounding switch 19 and a transformer high-voltage terminal 15; the vacuum load switch 18 is connected to the transformer high-voltage terminal 15 through a high-voltage busbar 16; the outer side of the high-voltage busbar 16 is covered with a heat shrink tubing to increase the insulation and heat dissipation effect; the grounding switch 19 is connected to the vacuum load switch 18; the isolating switch 4, the vacuum load The load switch 18, the high-voltage fuse 9 and the grounding switch 19 all adopt a large creepage distance support insulator 17; to ensure the electrical safety distance at high altitudes, the high-voltage fuse 9 is a striker-type fuse, so that when one phase of the high-voltage fuse 9 is blown, the striker of the high-voltage fuse 9 drives the vacuum load switch 18 to trip the interlocking mechanism to make the three phases of the vacuum load switch 18 open at the same time, avoiding the transformer 14 from running in a phase-missing manner, further improving the safety and reliability of the substation, the vacuum load switch 18 is manually or electrically operated, and can be remotely operated through an intelligent monitoring system, the static contact end of the isolating switch 4 is connected to the external high-voltage cable 20 in and out; the operating surface of the high-voltage switchgear faces the high-voltage chamber door 6 that opens outward from the side of the box body 5.
[0021] The low-voltage switchgear includes a low-voltage switch cabinet 27 and a low-voltage control cabinet 26; a low-voltage circuit breaker 28 and a plurality of low-voltage branch circuit breakers 43 are arranged in the low-voltage switch cabinet 27; the low-voltage circuit breaker 28 is connected to the low-voltage terminal 31 of the transformer through a low-voltage busbar 29 via a flexible connection 30; a heat shrink sleeve is sheathed on the outside of the low-voltage busbar 29 to increase the insulation and heat dissipation effect; the low-voltage terminal 31 of the transformer is arranged on the transformer control panel 35; the circuit of each low-voltage branch circuit breaker 43 is connected to the corresponding photovoltaic power inverter through a low-voltage cable 44 entering and exiting from the bottom; a small dry-type transformer for providing equipment control power is arranged in the low-voltage control cabinet 26 The transformer 24 provides control and operation power for the box-type substation. The low-voltage control cabinet 26 is also provided with operation status data monitoring and transmission equipment, communication equipment and remote intelligent control equipment, which can remotely and intelligently control the corresponding equipment; operation, indication, display and other components are installed on the low-voltage cabinet instrument door 39; the transformer control large panel 35 in the low-voltage room 25 is provided with the transformer oil temperature gauge 32, transformer tap switch 45, transformer oil drain valve 46 and transformer low-voltage terminal 31; the low-voltage switchgear operating surface faces the low-voltage outdoor door 40 that opens outward from the side of the box body 5; the low-voltage outdoor door 40 is provided with a door lock 41.
[0022] The main part of the transformer 14 is connected to the side wall of the box body 5; the other three sides of the main part of the transformer 14 are exposed to the atmosphere, and the other three sides of the main part of the transformer 14 are equipped with a plate radiator 12, which can realize natural ventilation and heat dissipation. An oil conservator 11 is arranged on the top cover of the transformer 14, and the oil conservator 11 is connected to the transformer oil tank 34 through an oil pipe via a gas relay 10; the transformer oil tank 34 is filled with no less than Karamay 45# transformer oil to ensure that the box-type substation can be used normally in extremely cold areas at high altitudes.
[0023] The utility model can solve the problem of large-scale construction of substations adapted to solar photovoltaic power stations in high-altitude areas, thereby improving the efficiency of utilizing clean new energy solar photovoltaic power generation, enabling the vigorous development and utilization of clean resources in western my country, and expanding the application scope of photovoltaic power generation box-type substations.
[0024] The present utility model is not limited to the above-mentioned embodiments. On the basis of the technical solution disclosed in the present utility model, technicians in this field can make some substitutions and deformations to some technical features therein according to the disclosed technical content without creative labor, and these substitutions and deformations are all within the protection scope of the present utility model.
Claims
1. A high-altitude photovoltaic power generation Chinese-style box-type substation, comprising a box body (5) and a transformer (14), characterized in that: The interior of the box body (5) is divided into a high-voltage chamber (3) and a low-voltage chamber (25) by a high- and low-voltage chamber partition board (23); a large transformer control panel (35) is provided on one side wall of the box body (5); the main body part of the transformer (14) is connected to the side wall of the box body (5) where the large transformer control panel (35) is provided; the high-voltage chamber (3), the low-voltage chamber (25) and the transformer (14) are arranged in a "pin" shape; high-voltage switchgear is provided in the high-voltage chamber (3); low-voltage switchgear, measurement, control and communication equipment, and operating power supply equipment are provided in the low-voltage chamber (25); the transformer (14) and the box body (5) are arranged on the same channel steel bottom frame (1); a top cover (8) is provided on the upper part of the box body (5), and the top cover (8) and the peripheral side walls of the box body (5) all adopt a double-layer heat insulation structure; the top cover (8) adopts a "human" - shaped steep slope, and the slope of the "human" - shaped steep slope is not less than 5°.
2. According to claim 1, a high altitude photovoltaic power generation Chinese box-type substation is characterized in that: The high-voltage switchgear includes a high-voltage disconnector cabinet (37) and a vacuum load switch plus fuse combination cabinet (36); a disconnector (4), a lightning arrester (22) and a live display sensor (38) are provided in the high-voltage disconnector cabinet (37); the lightning arrester (22) is connected to the high-voltage cable (20) through a high-voltage lightning arrester connecting wire (21); a vacuum load switch (18), a high-voltage fuse (9), an earthing switch (19) and a transformer high-voltage terminal (15) are provided in the vacuum load switch plus fuse combination cabinet (36); the vacuum load switch (18) is connected to the transformer high-voltage terminal (15) through a high-voltage busbar (16); the earthing switch (19) is connected to the vacuum load switch (18); the disconnector (4), the vacuum load switch (18), the high-voltage fuse (9) and the earthing switch (19) all adopt large creepage distance support insulators (17).
3. A high altitude photovoltaic power generation Chinese box-type substation according to claim 1, characterized in that: The low-voltage switchgear includes a low-voltage switch cabinet (27) and a low-voltage control cabinet (26); a low-voltage circuit breaker (28) and several low-voltage branch circuit breakers (43) are provided in the low-voltage switch cabinet (27), and the low-voltage circuit breaker (28) is connected to the transformer low-voltage terminal (31) through a low-voltage busbar (29) via a flexible connection (30); the transformer low-voltage terminal (31) is provided on the large transformer control panel (35); the circuit of each low-voltage branch circuit breaker (43) is connected to the corresponding photovoltaic power generation inverter through a lower-in and lower-out low-voltage cable (44); a small dry-type transformer (24) for providing equipment control power is provided in the low-voltage control cabinet (26), and equipment for monitoring and transmitting operating state data, communication equipment and remote intelligent control equipment are also provided.
4. A high altitude photovoltaic power generation Chinese-style box-type substation according to claim 1, characterized in that: The main body part of the transformer (14) is connected to the side wall of the box body (5); finned radiators (12) are installed on the other three sides of the main body part of the transformer (14), an oil conservator (11) is provided on the top cover of the transformer (14), and the oil conservator (11) is connected to the transformer oil tank (34) through an oil pipe via a gas relay (10).
5. A high altitude photovoltaic power generation Chinese-style box-type substation according to claim 1, characterized in that: Hanging hooks (13) are arranged on both sides of the bottom frame (1), and two groups of hanging hooks (13) are arranged on both sides of one end of the bottom frame (1) corresponding to the box body (5) at different distances from the end surface.
6. A high altitude photovoltaic power generation Chinese-style box-type substation according to claim 1, characterized in that: The transformer control panel (35) in the low-voltage chamber (25) is provided with a transformer oil temperature gauge (32), a transformer tap switch (45), a transformer oil drain valve (46) and a transformer low-voltage terminal (31).