A wind farm operation and maintenance system based on intelligent construction of a station

Abstract

This invention provides a wind power plant operation and maintenance system based on intelligent site construction. Compared with existing technologies, this system includes a temperature monitoring module for monitoring generator temperature and a cooling module for adaptive cooling of the wind turbines based on their temperature conditions. By periodically monitoring the temperature of the wind turbines, this invention can understand the thermal state during operation in real time and respond promptly to temperature changes. The system can select appropriate cooling strategies based on different temperature conditions to ensure the equipment operates at the optimal temperature. By preventing overheating, it further improves the overall operating efficiency of the wind turbines within the wind power plant.

Description

Technical Field

[0001] This invention relates to the field of wind power system technology, and in particular to a wind farm operation and maintenance system based on intelligent construction of the wind farm. Background Technology

[0002] In areas with strong winds, wind turbines often need to operate for extended periods. The bearings inside the generator generate a lot of heat during rotation due to friction, preventing the temperature inside the nacelle from dropping. Current solutions often involve using lubricating oil to reduce the friction generated by the bearing rotation, combined with air cooling to lower the nacelle temperature. However, due to the obstruction of the generator casing, the cooling effect is poor, and the limited ventilation holes on the generator casing often cause a large amount of hot air to accumulate in the corners of the generator casing, significantly reducing the cooling effect.

[0003] Our research team has conducted extensive research and review of relevant records on related technologies over a long period. Utilizing relevant resources and conducting numerous experiments, we discovered existing technologies such as those disclosed in CN114803963B, CN111520294B, CN111864993B, and CN106451917A, including a generator and wind power generation device. The generator includes a fan, a base, and a rotor shaft rotatably connected to the base. The fan is fixedly mounted on the rotor shaft and located inside the base. When the rotor shaft rotates, it drives the fan to rotate, accelerating airflow within the generator and thus cooling it. By installing a fan on the rotor shaft, the generator is cooled by the rotation of the rotor shaft itself, eliminating the need for a separate fan, thereby reducing cooling costs and improving reliability.

[0004] This invention was made to address the common problems in the field, such as poor efficiency and adaptability in temperature monitoring and cooling of wind turbines. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings existing in the field by proposing a wind power plant operation and maintenance system based on intelligent construction of the site.

[0006] To overcome the shortcomings of the prior art, the present invention adopts the following technical solution:

[0007] A wind farm operation and maintenance system based on intelligent site construction is disclosed. The wind farm includes a wind turbine, which comprises a nacelle, blades rotatably mounted outside the nacelle, and a tower supporting and fixing the nacelle. The tower includes a base fixed to the ground and a cylindrical tower body hinged to the base. The wind farm operation and maintenance system based on intelligent site construction includes a temperature monitoring module for monitoring the temperature of the generator and a cooling module for adaptive cooling of the wind turbine based on its temperature status.

[0008] The end of the nacelle that is fixedly fitted with the blade is designated as the front end of the nacelle, the end of the nacelle furthest from the blade is designated as the rear end of the nacelle, the bulkhead located at the front end of the nacelle is designated as the forward bulkhead, and the bulkhead located at the rear end of the nacelle is designated as the aft bulkhead.

[0009] The temperature monitoring module includes a first temperature sensor for monitoring the temperature inside the tower, a second temperature sensor for monitoring the temperature inside the nacelle, a third temperature sensor for monitoring the temperature of the environment where the wind turbine is located, and an analysis and processing unit for receiving monitoring data from all temperature sensors, analyzing and processing the data, and further controlling the specific cooling operation of the cooling module. All temperature sensors include the first temperature sensor, the second temperature sensor, and the third temperature sensor. The cooling module includes a liquid cooling unit and an air cooling unit.

[0010] Furthermore, the liquid cooling unit includes at least one cold liquid chamber disposed inside the tower body, a cold liquid tank disposed inside the cold liquid chamber, a cooling device for cooling the liquid in the cold liquid tank to a preset low temperature threshold, at least one temporary storage chamber disposed inside the tower body, a temporary storage tank placed in the temporary storage chamber, constant pressure devices disposed in the cold liquid tank and the temporary storage tank respectively, a plurality of liquid transfer pipes coiled and laid on the inner wall of the engine compartment, a plurality of liquid inlet pipes sequentially connecting the liquid inlet end of the liquid transfer pipes to the cold liquid tank, a plurality of liquid outlet pipes sequentially connecting the liquid outlet end of the liquid transfer pipes to the temporary storage tank, and liquid inlet pipes respectively disposed in each liquid inlet pipe. The system includes a first check valve that allows the solution to flow unidirectionally from the cold liquid tank to the liquid transfer pipe; a second check valve installed in each outlet pipe to control the unidirectional flow of liquid from the inlet pipe to the temporary storage tank; a first electrically controlled valve that controls the connection between each inlet pipe and the cold liquid tank; a second electrically controlled valve that controls the connection between each outlet pipe and the temporary storage tank; several first liquid pumps that drive the liquid in the cold liquid tank to enter the inlet pipe; and several second liquid pumps that drive the liquid in the outlet pipe to flow to the temporary storage tank. One end of the inlet pipe is the inlet end, and the other end of the inlet pipe is the outlet end.

[0011] Furthermore, the air-cooling module includes a heat dissipation unit fixed inside the cabin and correspondingly located near the front of the cabin; several air intake pipes, each with one end located outside the cabin and the other end penetrating from the front bulkhead into the cabin; a fixed cylinder located inside the cabin and correspondingly located near the rear of the cabin; a fan fixed inside the fixed cylinder for driving airflow from outside the cabin into the cabin through the air intake pipes; and an air outlet pipe, one end of which is connected to the fixed cylinder and the other end of which extends from the rear of the cabin.

[0012] The air intake pipe is an arc-shaped pipe structure, and the fixed cylinder is a cylindrical structure with both ends connected. One end of the fixed cylinder is located close to the heat dissipation unit, and the other end of the fixed cylinder is connected to the air outlet.

[0013] Furthermore, the heat dissipation unit includes heat dissipation fins vertically fixed to the front bulkhead in sequence, through holes extending through the heat dissipation fins in sequence, at least one through pipe sequentially fitted into the through holes to pass through and fit on all the heat dissipation fins, a first transfer pipe with one end connected to the through pipe and the other end connected to the coolant tank, a second transfer pipe with one end connected to the through pipe and the other end connected to the storage tank, a first electric valve controlling the connection between the first transfer pipe and the coolant tank, a second electric valve controlling the connection between the second transfer pipe and the storage tank, and a liquid pump that drives the liquid in the coolant tank to flow from the first transfer pipe at a preset flow rate to the second transfer pipe and further back to the storage tank.

[0014] Furthermore, the temperature monitored by the first temperature sensor is TTOWER, the temperature monitored by the second temperature sensor is TNACELLE, the temperature monitored by the third temperature sensor is TENV, the cooling temperature of the cooling device is TEMADJ, the preset first temperature threshold is Lpath, the preset second temperature threshold is Tlimit, the flow rate of the solution in the transfer tube controlled by the first and second liquid pumps is FRATE, and the number of transfer tubes in the solution transfer state is AMO.

[0015] The cooling and control operation of the analysis and processing unit is achieved through the following steps:

[0016] S101: Receive temperature detection values ​​from the first, second, and third temperature sensors at a preset cycle. Taking the current cycle as the nth cycle, analyze and process each received detection value. The temperature value monitored by the first temperature sensor in the current cycle is TTOWER. n The temperature values ​​measured by the first temperature sensor in the first two consecutive cycles are sequentially represented as TTOWER. n-2 TTOWER n-1 The second temperature sensor is currently monitoring a temperature value of TNACELLE. nThe temperature values ​​measured by the second temperature sensor in the first two consecutive cycles are sequentially represented as TNACELLE. n-2 TNACELLE n-1 The temperature value currently monitored by the third temperature sensor is TENV. n The temperature values ​​measured by the third temperature sensor in the first two consecutive cycles are sequentially represented as TENV. n-2 TENV n-1 ,

[0017] S102: Calculate the current temperature reference value Tref:

[0018]

[0019] Where α, β, and γ are weighting coefficients.

[0020] S103: When Tref≤Lpath, the temperature is continuously monitored, while the cooling module does not operate.

[0021] S104: When Tref∈(Lpath, Tlimit), the temperature is higher than the normal range but has not yet reached an emergency state. Primary cooling measures are initiated. The TEMADJ, FRATE, and AMO measures in the primary cooling measures are obtained from the following formula:

[0022] TEMADJ = Tstandard,

[0023] FRATE: FRATE=Fs+(Tref-k1)×p r1 ,

[0024] Where Tstandard is the preset standard cooling temperature value, Fs is the first standard flow rate value, k1 is the preset temperature reference comparison value, P is the flow rate correction coefficient, and r is the priority-related parameter of the flow rate correction coefficient.

[0025] AMO = AMOmin + (Tref - k1) × W r2 ,

[0026] AMOmin is the preset base quantity, W is the quantity correction factor, and r2 is the priority parameter for the temperature correction factor.

[0027] S105: When Tref≥Tlimit, the temperature has reached or exceeded the critical upper limit, and strong cooling measures are taken: all transfer pipes are in solution transfer mode, and the first and second solenoid valves are open. The drive pump drives the liquid in the cold liquid tank to flow from the first transfer pipe to the second transfer pipe at a preset flow rate and then back to the temporary storage tank. TEMADJ and FRATE are represented as follows:

[0028] TEMADJ = Whigh - (Tref - T1) × G m1 ,

[0029] FRATE = Fnor + (Tref - T1) × q m2 ,

[0030] Whigh is the significant cooling amount in an emergency, T1 is the preset temperature reference value, G is the temperature correction coefficient, m1 is the priority parameter of the temperature correction coefficient, Fnor is the preset high-intensity flow rate value, q is the flow rate correlation coefficient related to temperature, and m2 is the priority related parameter of the flow rate correlation coefficient.

[0031] The beneficial effects achieved by this invention are:

[0032] 1. This invention controls the number of liquid transfer tubes, flexibly adjusts the cooling intensity, adapts to different operating conditions and ambient temperatures, reduces energy consumption and improves overall energy efficiency through intelligent temperature management, and reduces wear on mechanical parts through effective temperature control, thereby reducing maintenance costs and extending maintenance cycles. Adaptive cooling treatment helps reduce equipment failures caused by excessive temperature and improves overall equipment reliability.

[0033] 2. By effectively transferring heat from key components such as blade bearings to the outside, the air-cooled module helps reduce the temperature inside the engine compartment, thereby improving the operating efficiency and reliability of the equipment. The air-cooled module can automatically adjust the cooling effect according to external environmental conditions and the heat load inside the engine compartment, and has good adaptability.

[0034] 3. This invention enables real-time monitoring of the temperature of wind turbines through periodic monitoring, allowing for timely response to temperature changes. The system can select appropriate cooling strategies based on different temperature conditions to ensure the equipment operates at the optimal temperature. By preventing overheating, the system reduces equipment failures. Effective temperature management reduces wear and malfunctions caused by overheating, thereby reducing maintenance costs and time, and further improving the overall operating efficiency of wind turbines in wind power plants. Attached Figure Description

[0035] The invention will be further understood from the following description taken in conjunction with the accompanying drawings. The components in the drawings are not necessarily drawn to scale, but rather the emphasis is on illustrating the principles of the embodiments. In different views, the same reference numerals designate corresponding parts.

[0036] Figure 1 This is a modular schematic diagram of the wind power plant operation and maintenance system based on intelligent construction of the wind farm according to the present invention.

[0037] Figure 2This is a partial structural schematic diagram of the wind turbine generator of the present invention.

[0038] Figure 3 This is a partial structural diagram of the fluid transfer tube of the present invention.

[0039] Figure 4 This is a partial structural schematic diagram of the air-cooling module of the present invention.

[0040] Explanation of reference numerals: 1-blade; 2-nacelle; 3-tower; 4-inlet pipe; 5-transfer pipe; 6-outlet pipe; 7-inlet pipe; 8-forward bulkhead; 9-through pipe; 10-heat sink; 11-fixed cylinder; 12-outlet pipe; 13-rear bulkhead; 14-first transfer pipe; 15-second transfer pipe. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to its embodiments. It should be noted that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this invention. Other systems, methods, and / or features of this embodiment will become apparent to those skilled in the art after reviewing the following detailed description. Furthermore, the terminology used to describe positional relationships in the accompanying drawings is for illustrative purposes only and should not be construed as limiting this patent. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0042] Example 1: Combined with Appendix Figure 1 Appendix Figure 2 Appendix Figure 3 and attached Figure 4 This embodiment constructs a wind power plant operation and maintenance system based on intelligent site construction. The wind turbine includes a nacelle, blades rotatably mounted outside the nacelle, and a tower that supports and fixes the nacelle. The tower includes a base fixed to the ground and a cylindrical tower body hinged to the base. The system includes a temperature monitoring module for monitoring the generator's temperature and a cooling module for adaptively cooling the wind turbine based on its temperature.

[0043] The temperature monitoring module includes a first temperature sensor for monitoring the temperature inside the tower, a second temperature sensor for monitoring the temperature inside the nacelle, a third temperature sensor for monitoring the temperature of the environment where the wind turbine is located, and an analysis and processing unit for receiving monitoring data from all temperature sensors, analyzing and processing the data, and further controlling the specific cooling operations of the cooling module. All temperature sensors include the first, second, and third temperature sensors.

[0044] The cooling module includes a liquid cooling unit and an air cooling unit. The liquid cooling unit includes at least one cold liquid chamber located inside the tower body, a cold liquid tank located within the cold liquid chamber, a cooling device for cooling the liquid in the cold liquid tank to a preset low temperature threshold, at least one temporary storage chamber located inside the tower body, a temporary storage tank placed within the temporary storage chamber, constant pressure devices located in the cold liquid tank and the temporary storage tank respectively, several liquid transfer pipes coiled along the inner wall of the engine compartment, several inlet pipes sequentially connecting the inlet ends of the liquid transfer pipes to the cold liquid tank, several outlet pipes sequentially connecting the outlet ends of the liquid transfer pipes to the temporary storage tank, and several other components. The system includes: a first check valve placed in each inlet pipe to allow unidirectional flow of solution from the cold liquid tank to the transfer pipe; a second check valve installed in each outlet pipe to control unidirectional flow of liquid from the inlet pipe to the temporary storage tank; a first electrically controlled valve to control the connection between each inlet pipe and the cold liquid tank; a second electrically controlled valve to control the connection between each outlet pipe and the temporary storage tank; several first liquid pumps that drive liquid from the cold liquid tank into each inlet pipe; and several second liquid pumps that drive liquid from each outlet pipe to flow into the temporary storage tank. One end of each inlet pipe is the inlet end, and the other end is the outlet end.

[0045] When the first and second electrically controlled valves are opened, and simultaneously the first and second liquid pumps drive the solution in the coolant tank to flow at a preset flow rate to the corresponding transfer pipe for further recovery into the temporary storage tank, the corresponding transfer pipe is in solution transfer mode. By controlling the number of transfer pipes in solution transfer mode, adjustable cooling intensity can be achieved for the nacelle of the wind turbine.

[0046] This invention flexibly adjusts the cooling intensity by controlling the number of liquid transfer tubes to adapt to different operating conditions and ambient temperatures. Through intelligent temperature management, it reduces energy consumption and improves overall energy efficiency. Effective temperature control reduces wear on mechanical parts, thereby reducing maintenance costs and extending maintenance cycles. Adaptive cooling treatment helps reduce equipment failures caused by excessively high temperatures and improves overall equipment reliability.

[0047] Example 2: Combined with Appendix Figure 1 Appendix Figure 2 Appendix Figure 3 and attached Figure 4 In addition to the contents of the above embodiments, it is further characterized in that, one end of the nacelle that is fixedly fitted with the blade is the front end of the nacelle, the end of the nacelle that is far away from the blade is the rear end of the nacelle, the bulkhead located at the front end of the nacelle is the forward bulkhead, and the bulkhead located at the rear end of the nacelle is the aft bulkhead.

[0048] The air-cooling module includes a heat dissipation unit fixed inside the engine compartment and positioned near the front of the engine compartment; several air intake pipes, each with one end located outside the engine compartment and the other end penetrating from the front bulkhead into the engine compartment; a fixed cylinder located inside the engine compartment and positioned near the rear of the engine compartment; a fan fixed inside the fixed cylinder for driving airflow from outside the engine compartment into the engine compartment through the air intake pipes; and an air outlet pipe with one end connected to the fixed cylinder and the other end extending from the rear of the engine compartment.

[0049] The intake pipe has an arc-shaped structure, and the fixing cylinder is a cylindrical structure with both ends connected. One end of the fixing cylinder is located near the heat dissipation unit, and the other end of the fixing cylinder is connected to the exhaust cylinder.

[0050] The heat dissipation unit includes heat sinks vertically fixed to the front bulkhead in sequence, through holes extending through the heat sinks in sequence, at least one through pipe sequentially fitted into the through holes to pass through and fit on all the heat sinks, a first delivery pipe with one end connected to the through pipe and the other end connected to the coolant tank, a second delivery pipe with one end connected to the through pipe and the other end connected to the storage tank, a first electric valve controlling the connection between the first delivery pipe and the coolant tank, a second electric valve controlling the connection between the second delivery pipe and the storage tank, and a liquid pump that drives the liquid in the coolant tank to flow from the first delivery pipe at a preset flow rate to the second delivery pipe and further back to the storage tank.

[0051] The heat dissipation unit transfers the heat generated by the bearings of the blades during rotation. With the fan running, outside air enters the nacelle through the intake pipe, then passes through the fixed cylinder and exhaust pipe to be discharged outside. During this airflow, the heat from the heat sink is transferred to the outside of the nacelle. The flow of liquid within the pipe further cools the heat sink and the nacelle. The air-cooling module effectively transfers heat generated inside the nacelle to the external environment, maintaining the nacelle's internal temperature within a safe and efficient operating range.

[0052] This invention effectively transfers heat from key components such as blade bearings to the outside. The air-cooling module helps reduce the temperature inside the engine compartment, thereby improving the operating efficiency and reliability of the equipment. The air-cooling module can automatically adjust the cooling effect according to external environmental conditions and the heat load inside the engine compartment, and has good adaptability.

[0053] Example 3: Combined with Appendix Figure 1 Appendix Figure 2 Appendix Figure 3 and attached Figure 4In addition to the content of the above embodiments, the method further includes the following: the temperature value monitored by the first temperature sensor is TTOWER, the temperature value monitored by the second temperature sensor is TNACELLE, the temperature value monitored by the third temperature sensor is TENV, the cooling temperature of the cooling device is TEMADJ, the preset first temperature threshold is Lpath, the preset second temperature threshold is Tlimit, the flow rate of the solution in the transfer tube controlled by the first and second liquid pumps is FRATE, and the number of transfer tubes in the solution transfer state is AMO.

[0054] The cooling and control operation of the analysis and processing unit is achieved through the following steps:

[0055] S101: Receive temperature detection values ​​from the first, second, and third temperature sensors at a preset cycle. Taking the current cycle as the nth cycle, analyze and process each received detection value. The temperature value monitored by the first temperature sensor in the current cycle is TTOWER. n The temperature values ​​measured by the first temperature sensor in the first two consecutive cycles are sequentially represented as TTOWER. n-2 TTOWER n-1 The second temperature sensor is currently monitoring a temperature value of TNACELLE. n The temperature values ​​measured by the second temperature sensor in the first two consecutive cycles are sequentially represented as TNACELLE. n-2 TNACELLE n-1 The temperature value currently monitored by the third temperature sensor is TENV. n The temperature values ​​measured by the third temperature sensor in the first two consecutive cycles are sequentially represented as TENV. n-2 TENV n-1 ,

[0056] S102: Calculate the current temperature reference value Tref:

[0057]

[0058] Where α, β, and γ are weighting coefficients.

[0059] S103: When Tref≤Lpath, the temperature is continuously monitored, while the cooling module does not operate.

[0060] S104: When Tref∈(Lpath, Tlimit), the temperature is higher than the normal range but has not yet reached an emergency state. Primary cooling measures are initiated. The TEMADJ, FRATE, and AMO measures in the primary cooling measures are obtained from the following formula:

[0061] TEMADJ = Tstandard,

[0062] FRATE: FRATE=Fs+(Tref-k1)×p r1 ,

[0063] Where Tstandard is the preset standard cooling temperature value, Fs is the first standard flow rate value, k1 is the preset temperature reference comparison value, P is the flow rate correction coefficient, and r is the priority-related parameter of the flow rate correction coefficient.

[0064] AMO = AMOmin + (Tref - k1) × W r2 ,

[0065] AMOmin is the preset base quantity, W is the quantity correction factor, and r2 is the priority parameter for the temperature correction factor.

[0066] S105: When Tref≥Tlimit, the temperature has reached or exceeded the critical upper limit, and strong cooling measures are taken: all transfer pipes are in solution transfer mode, and the first and second solenoid valves are open. The drive pump drives the liquid in the cold liquid tank to flow from the first transfer pipe to the second transfer pipe at a preset flow rate and then back to the temporary storage tank. TEMADJ and FRATE are represented as follows:

[0067] TEMADJ = Whigh - (Tref - T1) × G m1 ,

[0068] FRATE = Fnor + (Tref - T1) × q m2 ,

[0069] Whigh is the significant cooling rate in an emergency, T1 is the preset temperature reference value, G is the temperature correction factor, m1 is the priority parameter of the temperature correction factor, Fnor is the preset high-intensity flow rate value, q is the flow rate correlation coefficient related to temperature, and m2 is the priority parameter related to the flow rate correlation coefficient.

[0070] Among them, Lpath, Tlimit, α, β, γ, Tstandard, Fs, k1, r, AMOmin, W, r2, Whigh, T1, G, m1, Fnor, q, and m2 were obtained by those skilled in the art based on historical experience data and extensive repeated experimental training, and will not be elaborated here.

[0071] This invention enables real-time monitoring of the thermal state of wind turbines during operation through periodic temperature monitoring, allowing for timely response to temperature changes. The system can select appropriate cooling strategies based on different temperature conditions to ensure that the equipment operates at the optimal temperature. By preventing overheating, the system can reduce equipment failures. Effective temperature management reduces wear and malfunctions caused by overheating, thereby reducing maintenance costs and time, and further improving the overall operating efficiency of wind turbines in wind power plants.

[0072] While the invention has been described above with reference to various embodiments, it should be understood that many changes and modifications can be made without departing from the scope of the invention. That is, the methods, systems, and devices discussed above are examples. Various configurations can be appropriately omitted, substituted, or added to various processes or components. For example, in alternative configurations, methods can be performed in a different order than described, and / or various components can be added, omitted, and / or combined. Moreover, features described with respect to certain configurations can be combined in various other configurations, such as different aspects and elements of the configuration can be combined in a similar manner. Furthermore, the elements therein can be updated as the technology develops; many elements are examples and do not limit the scope of this disclosure or the claims. It should also be understood that after reading the description of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent changes and modifications also fall within the scope defined by the claims of this invention.

Claims

1. A wind power plant operation and maintenance system based on intelligent construction of the wind farm, wherein the wind power plant includes a wind turbine, the wind turbine includes a nacelle, blades rotatably fitted to the outside of the nacelle, and a tower for supporting and fixing the nacelle, wherein, The tower includes a base fixed to the ground and a cylindrical tower body hinged to the base. Its distinguishing feature is that the wind farm operation and maintenance system based on intelligent site construction includes a temperature monitoring module for monitoring the generator temperature and a cooling module for adaptively cooling the wind turbine based on its temperature. The end of the nacelle that is fixedly fitted with the blade is designated as the front end of the nacelle, the end of the nacelle furthest from the blade is designated as the rear end of the nacelle, the bulkhead located at the front end of the nacelle is designated as the forward bulkhead, and the bulkhead located at the rear end of the nacelle is designated as the aft bulkhead. The temperature monitoring module includes a first temperature sensor for monitoring the temperature inside the tower, a second temperature sensor for monitoring the temperature inside the nacelle, a third temperature sensor for monitoring the temperature of the environment where the wind turbine is located, and an analysis and processing unit for receiving monitoring data from all temperature sensors, analyzing and processing the data, and further controlling the specific cooling operation of the cooling module. All temperature sensors include the first temperature sensor, the second temperature sensor, and the third temperature sensor. The cooling module includes a liquid cooling unit and an air cooling unit. The air-cooling module includes a heat dissipation unit fixed inside the engine compartment and positioned near the front of the engine compartment; several air intake pipes, each with one end located outside the engine compartment and the other end penetrating from the front bulkhead into the engine compartment; a fixed cylinder located inside the engine compartment and positioned near the rear of the engine compartment; a fan fixed inside the fixed cylinder for driving airflow from outside the engine compartment into the engine compartment through the air intake pipes; and an air outlet pipe with one end connected to the fixed cylinder and the other end extending from the rear of the engine compartment. The intake pipe is an arc-shaped pipe structure, and the fixed cylinder is a cylindrical structure with both ends connected. One end of the fixed cylinder is located close to the heat dissipation unit, and the other end of the fixed cylinder is connected to the exhaust cylinder. The heat dissipation unit includes heat dissipation fins that are vertically fixed to the front bulkhead in sequence, through holes that pass through the heat dissipation fins in sequence, at least one through pipe that is sequentially sleeved into the through holes to pass through and fit on all the heat dissipation fins, a first transfer pipe that is connected to the through pipe at one end and to the cold liquid tank at the other end, a second transfer pipe that is connected to the through pipe at one end and to the temporary storage tank at the other end, a first electric valve that controls the connection between the first transfer pipe and the cold liquid tank, a second electric valve that controls the connection between the second transfer pipe and the temporary storage tank, and a liquid pump that drives the liquid in the cold liquid tank to flow from the first transfer pipe at a preset flow rate to the second transfer pipe and then back to the temporary storage tank. The temperature monitored by the first temperature sensor is TTOWER, the temperature monitored by the second temperature sensor is TNACELLE, the temperature monitored by the third temperature sensor is TENV, the cooling temperature of the cooling device is TEMADJ, the preset first temperature threshold is Lpath, the preset second temperature threshold is Tlimit, the flow rate of the solution in the transfer tube controlled by the first and second liquid pumps is FRATE, and the number of transfer tubes in the solution transfer state is AMO. The cooling and control operation of the analysis and processing unit is achieved through the following steps: S101: Receive temperature detection values ​​from the first, second, and third temperature sensors at a preset cycle. Taking the current cycle as the nth cycle, analyze and process each received detection value. The temperature value monitored by the first temperature sensor in the current cycle is TTOWER. n The temperature values ​​measured by the first temperature sensor in the first two consecutive cycles are sequentially represented as TTOWER. n-2 TTOWER n-1 The second temperature sensor is currently monitoring a temperature value of TNACELLE. n The temperature values ​​measured by the second temperature sensor in the first two consecutive cycles are sequentially represented as TNACELLE. n-2 TNACELLE n-1 The temperature value currently monitored by the third temperature sensor is TENV. n The temperature values ​​measured by the third temperature sensor in the first two consecutive cycles are sequentially represented as TENV. n-2 TENV n-1 , S102: Calculate the current temperature reference value Tref: , Where α, β, and γ are weighting coefficients. S103: When Tref≤Lpath, the temperature is continuously monitored, while the cooling module does not operate. S104: When Trefϵ(Lpath, Tlimit) is reached, the temperature is above the normal range but has not yet reached an emergency state. Primary cooling measures are initiated. The primary cooling measures TEMADJ, FRATE, and AMO are obtained from the following formula: TEMADJ=Tstandard, BROTHER: BROTHER=Fs+(Tref-k1)×p r1 , Where Tstandard is the preset standard cooling temperature value, Fs is the first standard flow rate value, k1 is the preset temperature reference comparison value, P is the flow rate correction coefficient, and r is the priority-related parameter of the flow rate correction coefficient. AMO=AMOmin+(Tref-k1)×W r2 , AMOmin is the preset base quantity, W is the quantity correction factor, and r2 is the priority parameter for the temperature correction factor. S105: When Tref≥Tlimit, the temperature has reached or exceeded the critical upper limit, and strong cooling measures are taken: all transfer pipes are in solution transfer mode, and the first and second solenoid valves are open. The drive pump drives the liquid in the cold liquid tank to flow from the first transfer pipe to the second transfer pipe at a preset flow rate and then back to the temporary storage tank. TEMADJ and FRATE are represented as follows: TEMADJ=Whigh-(Tref-T1)×G m1 , FRATE=Fnor+(Tref-T1)×q m2 , Whigh is the significant cooling rate in an emergency, T1 is the preset temperature reference value, G is the temperature correction factor, m1 is the priority parameter of the temperature correction factor, Fnor is the preset high-intensity flow rate value, and q is the temperature-dependent flow rate coefficient. These are priority-related parameters for the flow velocity relationship coefficients.

2. The wind power plant operation and maintenance system as described in claim 1, characterized in that, The liquid cooling unit includes at least one cold liquid chamber located inside the tower body, a cold liquid tank located within the cold liquid chamber, a cooling device for cooling the liquid in the cold liquid tank to a preset low temperature threshold, at least one temporary storage chamber located inside the tower body, a temporary storage tank placed within the temporary storage chamber, constant pressure devices respectively located within the cold liquid tank and the temporary storage tank, several liquid transfer pipes coiled and laid along the inner wall of the engine compartment, several inlet pipes sequentially connecting the inlet ends of the liquid transfer pipes to the cold liquid tank, several outlet pipes sequentially connecting the outlet ends of the liquid transfer pipes to the temporary storage tank, and liquid transfer pipes respectively located within each inlet pipe to ensure that the liquid... The system includes a first check valve for unidirectional liquid flow from the cold liquid tank to the liquid transfer pipe, a second check valve for controlling unidirectional liquid flow from the liquid inlet pipe to the temporary storage tank, a first electrically controlled valve for controlling the connection between the liquid inlet pipe and the cold liquid tank, a second electrically controlled valve for controlling the connection between the liquid outlet pipe and the temporary storage tank, several first liquid pumps for driving liquid from the cold liquid tank into the liquid inlet pipe, and several second liquid pumps for driving liquid from the liquid outlet pipe to the temporary storage tank. One end of the liquid inlet pipe is the liquid inlet end, and the other end of the liquid inlet pipe is the liquid outlet end.

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