Special photovoltaic and wind power transformer

Abstract

The invention relates to the field of transformers, in particular to a photovoltaic and wind power special transformer which comprises an oil-immersed transformer body, a plurality of first heat pipes and a self-adaptive liquid cooling assembly, a plurality of sets of iron cores are arranged in the oil-immersed transformer body, and insulating layers are arranged outside the iron cores. Heat is dissipated to the outside through phase change of an internal working medium and a condensation section, heat dissipation of a high-voltage winding is achieved, power is provided for a centrifugal pump, cooling liquid is pumped out to a three-way proportional valve, the three-way proportional valve adjusts the flow according to the actual situation and then conveys the cooling liquid to a micro-channel cold plate, and the cooling liquid in the micro-channel cold plate absorbs heat of a low-voltage winding. Cooling of the low-voltage winding is completed, cooling liquid circularly flows to achieve cooling, and through close cooperation of the first heat pipe and the self-adaptive liquid cooling assembly and cooperation of a cooling system of the oil-immersed transformer body, the oil-immersed transformer can adapt to complex and changeable working environments and special operation requirements in the photovoltaic and wind power fields.

Description

Technical Field

[0001] The present invention relates to a transformer device, in particular to a special transformer for photovoltaic and wind power generation, belonging to the field of transformers. Background Art

[0002] In the era of global advocacy for sustainable energy development, photovoltaic and wind power have undoubtedly become the main forces driving energy transformation and are booming at an unprecedented rate. However, these two clean energy sources inevitably face a series of severe challenges in the actual energy conversion and power transmission process, among which heat dissipation is particularly prominent.

[0003] Photovoltaic power generation is highly dependent on sunlight conditions, while wind power generation is completely subject to variations in wind speed. Their power output exhibits significant instability and frequent fluctuations. For example, in photovoltaic power generation scenarios, the rapid movement of clouds can cause instantaneous changes in the light intensity received by the photovoltaic panels, leading to large fluctuations in power output. In wind power generation, sudden changes in wind speed can also cause dramatic fluctuations in power output. These large and rapid power fluctuations cause the transformer windings to generate significant heat as they perform their energy conversion tasks.

[0004] In particular, the high-voltage windings in a transformer shoulder the critical mission of transmitting and converting high-voltage electrical energy, while the low-voltage windings work closely with the high-voltage windings to achieve precise voltage conversion. As the core of power conversion, these two areas naturally become areas where heat is highly concentrated. If this heat cannot be dissipated promptly and effectively, the transformer's performance will be severely affected, its service life will be significantly shortened, and the stable operation of the entire photovoltaic or wind power system will be greatly threatened.

[0005] Therefore, there is an urgent need to improve photovoltaic and wind power dedicated transformers to solve the above-mentioned problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a special transformer for photovoltaic and wind power generation, which can correspond to the high-voltage winding through the evaporation section of the heat pipe 1, absorb its heat, and dissipate the heat to the outside through the condensation section through the internal working medium phase change, thereby realizing heat dissipation of the high-voltage winding. The centrifugal pump provides power to pump the coolant out to the three-way proportional valve. After the three-way proportional valve adjusts the flow rate according to actual conditions, the coolant is transported to the microchannel cold plate. The coolant in the microchannel cold plate absorbs the heat of the low-voltage winding, completing the cooling of the low-voltage winding. The coolant circulates to achieve continuous cooling. Through the close cooperation between the heat pipe 1 and the adaptive liquid cooling component, and in conjunction with the cooling system of the oil-immersed transformer body, an efficient and precise heat dissipation effect can be achieved, which is convenient for adapting to the complex and changeable working environment and special operating requirements in the photovoltaic and wind power fields.

[0007] In order to achieve the above objectives, the main technical solutions adopted by the present invention include:

[0008] A photovoltaic and wind power transformer, comprising an oil-immersed transformer body, a plurality of heat pipes (I), and an adaptive liquid cooling assembly. The oil-immersed transformer body is provided with multiple sets of iron cores, the iron cores are provided with an insulating layer on the outside, a low-voltage winding is provided on the outer wall of the insulating layer, and a high-voltage winding is provided on the outer wall of the low-voltage winding. One end of each of the plurality of heat pipes (I) corresponds to the high-voltage winding, and the other end of each heat pipe (I) extends to the outside of the oil-immersed transformer body.

[0009] The adaptive liquid cooling component includes a microchannel cold plate, a three-way proportional valve and a centrifugal pump. The microchannel cold plate is spiral-shaped as a whole. The microchannel cold plate is embedded between the low-voltage winding layers and is in close contact with the low-voltage winding. The centrifugal pump is fixed on the upper surface of the oil-immersed transformer body. The output end of the centrifugal pump is connected to the three-way proportional valve through a pipeline, and the three-way proportional valve is connected to one end of the microchannel cold plate.

[0010] Preferably, an accumulator and a radiator 1 are fixedly connected to the upper surface of the oil-immersed transformer body, the inlet end of the centrifugal pump is connected to the accumulator through a pipe, one end of the microchannel cold plate is connected to the inlet end of the radiator 1, and the outlet end of the radiator 1 is connected to the accumulator through a pipe.

[0011] Preferably, a cooling fan is fixedly connected to a side of the oil-immersed transformer body close to the first radiator, and an output side of the cooling fan corresponds to the first radiator.

[0012] Preferably, a plurality of temperature sensors are fixedly connected to the outer wall of the low-voltage winding, and the plurality of temperature sensors correspond to the three-way proportional valve and the cooling fan.

[0013] Preferably, corrugated aluminum fins are provided between the high-voltage winding layers, the inner side of the corrugated aluminum fins is in close contact with the high-voltage winding, one end of the heat pipe 1 extends to the outer side of the corrugated aluminum fins and the heat pipe 1 is fixedly connected to the corrugated aluminum fins.

[0014] Preferably, the microchannel cold plate and the outer wall of the corrugated aluminum fin are both subjected to corresponding insulation treatment.

[0015] Preferably, a plurality of radiators 2 are fixedly connected to the outside of the oil-immersed transformer body, a heat pipe 2 is fixedly connected inside each of the plurality of radiators 2, and the other end of the heat pipe 2 extends to the upper end of the oil-immersed transformer body.

[0016] Preferably, a spiral heat conducting plate is fixedly connected to the outer wall of one end of the heat pipe 2 close to the radiator 2, and the spiral heat conducting plate is fixedly connected to the radiator 2.

[0017] Preferably, a liquid wick is provided inside the first heat pipe and the second heat pipe, a cavity is provided inside the liquid wick, and the cavity is filled with a working medium.

[0018] Preferably, the outer walls of the upper ends of the heat pipe 1 and the heat pipe 2 are fixedly connected to a heat sink 1 and a heat sink 2, and the heat sink 2 is located directly above the heat sink 1.

[0019] The present invention has at least the following beneficial effects:

[0020] 1. The evaporation section of heat pipe 1 corresponds to the high-voltage winding, absorbs its heat, and dissipates the heat to the outside through the condensation section through the internal working fluid phase change, thereby realizing heat dissipation of the high-voltage winding. The centrifugal pump provides power to pump the coolant out to the three-way proportional valve. The three-way proportional valve adjusts the flow rate according to actual conditions and then delivers the coolant to the microchannel cold plate. The coolant in the microchannel cold plate absorbs the heat of the low-voltage winding and completes the cooling of the low-voltage winding. The coolant circulates to achieve continuous cooling. Through the close cooperation between heat pipe 1 and the adaptive liquid cooling component, and in conjunction with the cooling system of the oil-immersed transformer body, efficient and precise heat dissipation effect can be achieved, which is convenient for adapting to the complex and changeable working environment and special operating requirements in the photovoltaic and wind power fields.

[0021] 2. Multiple temperature sensors are installed on the upper and lower outer walls of the low-voltage winding, which can accurately measure the real-time temperature of the low-voltage winding during operation. The measured temperature data is fed back to the corresponding three-way proportional valve and cooling fan as the basis for their adjustment actions, ensuring that the cooling system can be accurately controlled according to the actual temperature of the low-voltage winding.

[0022] 3. Radiator 2 uses its large surface area and natural convection to dissipate part of the heat conducted from the oil-immersed transformer body directly into the surrounding air, thereby enhancing the heat dissipation capacity of the entire oil-immersed transformer body. The evaporation section of heat pipe 2 is located inside radiator 2. When there is still undissipated heat after radiator 2 itself dissipates heat, this heat can be transferred to the evaporation section of heat pipe 2. The condensation section of heat pipe 2 extends above the oil-immersed transformer body, efficiently transferring the undissipated heat of radiator 2 to the space above the transformer body, thereby improving the overall heat dissipation effect of radiator 2. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0024] Figure 1 The three-dimensional structure provided by the present invention is shown in FIG. Figure 1 ;

[0025] Figure 2 The three-dimensional structure provided by the present invention is shown in FIG. Figure 2 ;

[0026] Figure 3 The present invention provides Figure 2 A in the middle is an enlarged structural diagram;

[0027] Figure 4 A schematic diagram of a partial three-dimensional structure provided by the present invention;

[0028] Figure 5 Schematic diagram of the internal structure of the oil-immersed transformer body provided by the present invention Figure 1 ;

[0029] Figure 6 The present invention provides Figure 5 The enlarged structural diagram at B in the middle;

[0030] Figure 7 The present invention provides Figure 5 Schematic cross-section;

[0031] Figure 8 The present invention provides Figure 7 The enlarged structural diagram at C in the middle;

[0032] Figure 9 This is a schematic diagram of an enlarged cross-section of the heat pipe provided by the present invention.

[0033] In the figure, 1. Oil-immersed transformer body; 2. Heat pipe 1; 3. Adaptive liquid cooling assembly; 4. Iron core; 5. Insulation layer; 6. Low-voltage winding; 7. High-voltage winding; 8. Microchannel cold plate; 9. Three-way proportional valve; 10. Centrifugal pump; 21. Accumulator; 22. Radiator 1; 31. Cooling fan; 41. Temperature sensor; 51. Corrugated aluminum fin; 71. Radiator 2; 72. Heat pipe 2; 81. Spiral heat conduction plate; 91. Liquid wick; 92. Cavity; 93. Working fluid; 101. Heat sink 1; 102. Heat sink 2. DETAILED DESCRIPTION

[0034] The following will describe the implementation methods of the present application in detail with reference to the accompanying drawings and examples, so that the implementation process of how the present application applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0035] like Figures 1-9As shown, the photovoltaic and wind power-specific transformer provided in this embodiment includes an oil-immersed transformer body 1, multiple heat pipes 2, and an adaptive liquid cooling component 3. The oil-immersed transformer body 1 serves as the main structure of the transformer, accommodating and supporting the internal components. At the same time, transformer oil is filled therein, which plays a dual role of insulation and cooling. A plurality of groups of iron cores 4 are provided inside the oil-immersed transformer body 1. The number of iron cores 4 is three. The iron core 4 provides a magnetic path with low magnetic resistance for the winding, so that the magnetic flux generated by the winding can be efficiently closed through the iron core 4 to realize electromagnetic conversion of electric energy. It is a key component of the transformer to realize voltage conversion. An insulating layer 5 is provided on the outside of the iron core 4. The insulating layer 5 is wrapped around the outside of the iron core 4 to isolate the iron core 4 from the low-voltage winding 6 to prevent current leakage and ensure electrical insulation inside the transformer. Performance, ensuring safe and stable operation of the transformer, the outer wall of the insulating layer 5 is provided with a low-voltage winding 6, and the outer wall of the low-voltage winding 6 is provided with a high-voltage winding 7. The low-voltage winding 6 is an important component of the transformer to achieve voltage conversion. Through the principle of electromagnetic induction, it works in conjunction with the high-voltage winding 7 to achieve voltage reduction or increase, and complete the transmission and distribution of electric energy. One end of the multiple heat pipes 2 corresponds to the high-voltage winding 7, and the six heat pipes 2 are evenly distributed on both sides of the high-voltage winding 7. The evaporation section of the heat pipe 2 corresponds to the high-voltage winding 7, and the heat of the high-voltage winding 7 is absorbed through the evaporation section of the heat pipe 2. The other end of the heat pipe 2 passes through the outside of the oil-immersed transformer body 1, and the condensation section of the heat pipe 2 extends to the upper surface of the oil-immersed transformer body 1, so as to facilitate the heat in the heat pipe to be dissipated to the external environment;

[0036] The adaptive liquid cooling assembly 3 includes a microchannel cold plate 8, a three-way proportional valve 9 and a centrifugal pump 10. The microchannel cold plate 8 is spiral-shaped as a whole. The microchannel cold plate 8 is embedded between the layers of the low-voltage winding 6 and the microchannel cold plate 8 is in close contact with the low-voltage winding 6. The microchannel cold plate 8 is spirally embedded between the layers of the low-voltage winding 6, which greatly increases the contact area with the low-voltage winding 6. Cooling liquid circulates inside the microchannel cold plate 8, and the heat generated by the low-voltage winding 6 can be directly taken away by the cooling liquid, thereby achieving efficient cooling of the low-voltage winding 6 and ensuring that the low-voltage winding 6 is at a safe temperature. The centrifugal pump 10 is fixed to the upper surface of the oil-immersed transformer body 1. The output end of the centrifugal pump 10 is connected to the three-way proportional valve 9 through a pipeline. The three-way proportional valve 9 is connected to one end of the microchannel cold plate 8. The three-way proportional valve 9 can accurately adjust the flow of coolant entering the microchannel cold plate 8 according to actual conditions. By reasonably distributing the flow, adaptive control of the cooling intensity of the low-voltage winding 6 is achieved, ensuring that the temperature of the low-voltage winding 6 is stable within an appropriate range. The centrifugal pump 10 provides power for the entire adaptive liquid cooling system, driving the coolant to circulate in the system. The coolant can enter the microchannel cold plate 8 through the three-way proportional valve 9 and circulate inside.

[0037] Among them, such as Figures 1-9As shown, an accumulator 21 and a radiator 22 are fixedly connected to the upper surface of the oil-immersed transformer body 1. The inlet end of the centrifugal pump 10 is connected to the accumulator 21 through a pipeline. The accumulator 21 can store a certain amount of cooling medium. When the output pressure of the centrifugal pump 10 fluctuates, the accumulator 21 can absorb or release the cooling medium, thereby stabilizing the system pressure and ensuring the operational stability of the entire liquid cooling system. One end of the microchannel cold plate 8 is connected to the inlet end of the radiator 22, and the outlet end of the radiator 22 is connected to the accumulator 21 through a pipeline. The radiator 22 dissipates heat and cools the high-temperature cooling medium flowing out of the microchannel cold plate 8 so that it can re-enter the system to cool the low-voltage winding 6.

[0038] Further, such as Figures 1-9 As shown, a cooling fan 31 is fixedly connected to the side of the oil-immersed transformer body 1 close to the radiator 22. The output side of the cooling fan 31 corresponds to the radiator 22. When the cooling fan 31 is in operation, it can generate a directional airflow to accelerate the air flow speed around the radiator 22. Compared with natural convection, forced convection can significantly improve the heat exchange efficiency between the radiator 22 and the air, thereby more effectively removing the heat from the radiator 22 and enhancing the overall heat dissipation effect.

[0039] Further, if Figures 1-9 As shown, a plurality of temperature sensors 41 are fixedly connected to the outer wall of the low-voltage winding 6, and the plurality of temperature sensors 41 correspond to the three-way proportional valve 9 and the cooling fan 31. The plurality of temperature sensors 41 are respectively installed on the upper and lower outer walls of the low-voltage winding 6, and can accurately measure the real-time temperature of the low-voltage winding 6 during operation, and feed back the measured temperature data to the corresponding three-way proportional valve 9 and the cooling fan 31 as the basis for their adjustment actions, thereby ensuring that the cooling system can be accurately regulated according to the actual temperature of the low-voltage winding 6.

[0040] Among them, such as Figures 1-9 As shown, corrugated aluminum fins 51 are provided between the layers of the high-voltage winding 7. The inner side of the corrugated aluminum fins 51 is in close contact with the high-voltage winding 7. One end of the heat pipe 2 extends to the outer side of the corrugated aluminum fin 51, and the heat pipe 2 is fixedly connected to the corrugated aluminum fin 51. The high-voltage winding 7 generates a large amount of heat during operation. The corrugated aluminum fins 51 can efficiently absorb the heat from the high-voltage winding 7 and quickly transfer the heat to the evaporation section of the heat pipe 2 through its own good thermal conductivity, thereby optimizing the heat transfer path and allowing heat to be dissipated from the high-voltage winding 7 more efficiently.

[0041] Further, such as Figures 1-9As shown, the outer walls of the microchannel cold plate 8 and the corrugated aluminum fins 51 have undergone corresponding insulation treatment. The insulation treatment of the microchannel cold plate 8 and the corrugated aluminum fins 51 jointly serves the safe and stable operation of the transformer. They respectively provide insulation protection for the heat dissipation components of the low-voltage winding 6 and the high-voltage winding 7, ensuring that during the heat dissipation process, electrical faults will not be caused by the conductive properties of the heat dissipation components. The two cooperate with each other and, together with other insulating components inside the transformer, construct a complete insulation system to ensure that the transformer maintains good electrical performance and a stable electromagnetic environment while achieving efficient heat dissipation.

[0042] Among them, such as Figures 1-9 As shown, a plurality of second heat sinks 71 are fixedly connected to the outside of the oil-immersed transformer body 1. The plurality of second heat sinks 71 are fixed to the outside of the oil-immersed transformer body 1 to absorb the heat of the oil-immersed transformer body 1. The second heat sink 71 uses its own large surface area and natural convection to directly dissipate part of the heat conducted from the oil-immersed transformer body 1 to the surrounding air, thereby enhancing the heat dissipation capacity of the entire oil-immersed transformer body 1. The interiors of the plurality of second heat sinks 71 are all fixedly connected to second heat pipes 72. The evaporation section of the second heat pipe 72 is located inside the second heat sink 71. When there is still heat that has not been dissipated after the second heat sink 71 itself dissipates heat, this heat can be transferred to the evaporation section of the second heat pipe 72. The other end of the second heat pipe 72 extends to the top of the oil-immersed transformer body 1. The condensation section of the second heat pipe 72 extends to the top of the oil-immersed transformer body 1, efficiently transferring the heat that has not been dissipated by the second heat sink 71 to the space above the transformer body, thereby improving the overall heat dissipation effect of the second heat sink 71.

[0043] Further, such as Figures 1-9 As shown, a spiral heat conducting plate 81 is fixedly connected to the outer wall of one end of the heat pipe 2 72 close to the radiator 2 71. The spiral heat conducting plate 81 is fixedly connected to the radiator 2 71. The spiral heat conducting plate 81 increases the contact area between the heat pipe 2 72 and the radiator 2 71, and can more efficiently transfer the heat on the radiator 2 71 to the evaporation section of the heat pipe 2 72, thereby reducing the thermal resistance during the heat transfer process.

[0044] Among them, such as Figures 1-9As shown, both heat pipe 1 2 and heat pipe 2 72 are provided with a wick 91 inside. A cavity 92 is provided inside the wick 91, and the cavity 92 is filled with a working medium 93. The wick 91 has a plurality of fine pore structures. These pores generate capillary force. In the condensation section of the heat pipe, the liquid working medium 93 is sucked into the wick 91 under the action of the capillary force and flows back to the evaporation section along the wick 91. This capillary driving force ensures the circulation of the working medium 93 in the heat pipe and is one of the key factors for the continuous and efficient heat transfer of the heat pipe. The wick 91 in the evaporation section adopts a finer structure or a material with a higher porosity to enhance the capillary suction capacity. In contrast, the wick 91 in the condensation section The structure is relatively loose. To optimize the heat transfer efficiency, a hydrophilic coating is added to the surface of the evaporation section liquid absorption core 91 to improve the wettability of the working medium 93 and promote the rapid vaporization and absorption of heat by the working medium 93. The condensation section liquid absorption core 91 focuses on surface smoothness, which can reduce the flow resistance of the working medium 93 and facilitate the rapid reflux of the liquid working medium 93. The cavity 92 provides a storage and phase change space for the working medium 93. During the operation of the heat pipe, the working medium 93 undergoes a phase change process of vaporization and condensation in the cavity 92. During evaporation, the working medium 93 absorbs heat in the cavity 92 and becomes steam. During condensation, the steam releases heat in the cavity 92 and re-liquefies. The working medium 93 adopts a sodium-potassium alloy suitable for high-temperature working conditions.

[0045] Further, if Figures 1-9 As shown, the upper outer walls of heat pipe 1 2 and heat pipe 2 72 are fixedly connected to heat plate 1 101 and heat plate 2 102. Heat plate 2 102 is located directly above heat plate 101. Heat plate 101 can distribute the heat from heat pipe 1 2 and heat pipe 2 72 more evenly across its surface, preventing heat from localized accumulation at the ends of the heat pipes, which helps improve heat dissipation efficiency. Heat plate 2 102 is located directly above heat plate 101, further increasing the three-dimensional space and surface area for heat dissipation. It can capture the heat dissipated upward by heat plate 101 and continue to dissipate it into the air at a higher position, further enhancing the overall heat dissipation effect. Especially in the case of natural convection, hot air rises, and heat plate 2 102 can more effectively utilize this characteristic to improve heat dissipation efficiency.

[0046] like Figures 1-9As shown, the principle of a photovoltaic and wind power dedicated transformer provided in this embodiment is as follows: the photovoltaic and wind power dedicated transformer starts to operate, the heat generated by the high-voltage winding 7 is transferred to the corrugated aluminum fin 51, the corrugated aluminum fin 51 transfers the heat to the evaporation section of the heat pipe 2, the centrifugal pump 10 is started, and the coolant is pumped out from the accumulator 21 and transported to the three-way proportional valve 9 through the pipeline. The three-way proportional valve 9 adjusts the flow of the coolant entering the microchannel cold plate 8 according to the temperature sensor 41, and the coolant enters the microchannel cold plate 8 between the layers of the low-voltage winding 6. The coolant absorbs the heat generated by the low-voltage winding 6 during the flow process. The high-temperature coolant after absorbing the heat flows out of the microchannel cold plate 8 and enters the radiator 22. The radiator 22 is connected to the heat exchanger 10. The high-temperature cooling medium dissipates heat and cools down the body. The cooling fan 31 runs to generate directional airflow, accelerating the air flow speed around the radiator 22. The cooled coolant in the radiator 22 flows back to the accumulator 21 through the pipeline. The multiple radiators 71 absorb and dissipate part of the heat conducted from the oil-immersed transformer body 1. The evaporation section of the heat pipe 2 72 absorbs the undissipated heat of the radiator 2 71 through the spiral heat conduction plate 81. The internal sodium-potassium alloy working medium 93 vaporizes. The steam rises to the condensation section above the transformer body under the action of the pressure difference, releases heat and liquefies and flows back. At the same time, the heat sink 101 and the heat sink 2 102 further increase the three-dimensional heat dissipation space and surface area to further enhance the overall heat dissipation effect.

[0047] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of the components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term and should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve technical problems within a certain error range and basically achieve technical effects.

[0048] It should be noted that the terms "include," "comprises," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a product or system comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such product or system. In the absence of further limitations, an element defined by the phrase "comprising a..." does not exclude the presence of other identical elements in the product or system comprising the element.

[0049] The foregoing description shows and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. Rather, the present invention can be used in various other combinations, modifications, and environments and can be modified within the scope of the inventive concept described herein by the teachings above or by techniques or knowledge in the relevant art. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention are intended to be within the scope of the appended claims.

Claims

1. A photovoltaic and wind power transformer, comprising an oil-immersed transformer body (1), a plurality of heat pipes (2) and an adaptive liquid cooling assembly (3), characterized in that: The oil-immersed transformer body (1) is provided with a plurality of iron cores (4), an insulating layer (5) is provided on the outside of the iron cores (4), a low-voltage winding (6) is provided on the outer wall of the insulating layer (5), a high-voltage winding (7) is provided on the outer wall of the low-voltage winding (6), one end of each of the plurality of heat pipes (2) corresponds to the high-voltage winding (7), and the other end of the heat pipe (2) passes through the outside of the oil-immersed transformer body (1); The adaptive liquid cooling component (3) includes a microchannel cold plate (8), a three-way proportional valve (9) and a centrifugal pump (10). The microchannel cold plate (8) is spiral-shaped as a whole. The microchannel cold plate (8) is embedded between the layers of the low-voltage winding (6) and the microchannel cold plate (8) is in close contact with the low-voltage winding (6). The centrifugal pump (10) is fixed on the upper surface of the oil-immersed transformer body (1). The output end of the centrifugal pump (10) is connected to the three-way proportional valve (9) through a pipeline, and the three-way proportional valve (9) is connected to one end of the microchannel cold plate (8).

2. A photovoltaic and wind power dedicated transformer according to claim 1, characterized in that: An accumulator (21) and a radiator (22) are fixedly connected to the upper surface of the oil-immersed transformer body (1); an inlet end of the centrifugal pump (10) is connected to the accumulator (21) via a pipeline; one end of the microchannel cold plate (8) is connected to the inlet end of the radiator (22); and an outlet end of the radiator (22) is connected to the accumulator (21) via a pipeline.

3. A photovoltaic and wind power dedicated transformer according to claim 2, characterized in that: A cooling fan (31) is fixedly connected to a side of the oil-immersed transformer body (1) close to the radiator 1 (22), and an output side of the cooling fan (31) corresponds to the radiator 1 (22).

4. A photovoltaic and wind power dedicated transformer according to claim 3, characterized in that: A plurality of temperature sensors (41) are fixedly connected to the outer wall of the low-voltage winding (6), and the plurality of temperature sensors (41) correspond to the three-way proportional valve (9) and the heat dissipation fan (31).

5. A photovoltaic and wind power dedicated transformer according to claim 1, characterized in that: Corrugated aluminum fins (51) are provided between the layers of the high-voltage winding (7), the inner side of the corrugated aluminum fins (51) is in close contact with the high-voltage winding (7), one end of the heat pipe (2) extends to the outer side of the corrugated aluminum fins (51), and the heat pipe (2) is fixedly connected to the corrugated aluminum fins (51).

6. A photovoltaic and wind power dedicated transformer according to claim 5, characterized in that: The microchannel cold plate (8) and the outer wall of the corrugated aluminum fin (51) are both subjected to corresponding insulation treatment.

7. A photovoltaic and wind power dedicated transformer according to claim 1, characterized in that: A plurality of heat sinks (71) are fixedly connected to the outside of the oil-immersed transformer body (1), and a heat pipe (72) is fixedly connected to the inside of each of the plurality of heat sinks (71), and the other end of the heat pipe (72) extends to the upper end of the oil-immersed transformer body (1).

8. A photovoltaic and wind power dedicated transformer according to claim 7, characterized in that: The outer wall of one end of the heat pipe 2 (72) close to the radiator 2 (71) is fixedly connected with a spiral heat conducting plate (81), and the spiral heat conducting plate (81) is fixedly connected to the radiator 2 (71).

9. A photovoltaic and wind power dedicated transformer according to claim 7, characterized in that: The heat pipe 1 (2) and the heat pipe 2 (72) are both provided with a liquid wick (91), a cavity (92) is provided inside the liquid wick (91), and the cavity (92) is filled with a working medium (93).

10. A photovoltaic and wind power dedicated transformer according to claim 9, characterized in that: The outer walls of the upper ends of the heat pipe 1 (2) and the heat pipe 2 (72) are fixedly connected to the heat dissipation plate 1 (101) and the heat dissipation plate 2 (102), and the heat dissipation plate 2 (102) is located directly above the heat dissipation plate 1 (101).

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