Power generation system for cooling tower of thermal power plant

Abstract

The application provides a thermal power plant cooling tower wind power generation system, and relates to the technical field of energy saving and consumption reduction of thermal power plants.The system comprises vertical axis wind driven generators arranged along the circumference of a cooling tower, a grid support, a flow guide baffle, a rectifier, a controller, a storage battery and a load.The cooling tower is a natural draft cooling tower, and the axial direction of the vertical axis wind driven generators is perpendicular to the ground.The grid support provides support for the vertical axis wind driven generators, and the flow guide baffle guides the incoming air of the cooling tower to uniformly pass through the vertical axis wind driven generators.A plurality of vertical axis wind driven generators are connected in series and / or parallel to the rectifier, the rectifier is connected to the controller, and the controller is connected to the storage battery and the load.The controller is used for charging and discharging control of the storage battery.The application utilizes the flowing air generated by the cooling tower for cooling and cooling circulating water to drive the vertical axis wind driven generators to generate electric energy, and the generated electric energy is stored in the storage battery or used to supply power to the load, so that the wind energy of the flowing air in the cooling tower can be effectively utilized, and the energy utilization rate is improved.

Description

Technical Field

[0001] This application relates to the field of wind power generation technology, and more specifically to a wind power generation system for a cooling tower in a thermal power plant. Background Technology

[0002] Currently, coal-fired power plant cooling towers typically use natural ventilation and counter-current circulation to reduce the temperature of the circulating water. Taking a pure condensing coal-fired generator unit as an example, the heat naturally dissipated by the cooling tower accounts for approximately 30% of the input fuel. Existing coal-fired power plant cooling towers generally adopt a hyperbolic structure, with the tower body divided from top to bottom into a top air outlet, throat, bottom air inlet, and inside the tower, a water separator, water distribution system, and packing layer. After absorbing the heat from the exhaust steam at the turbine's last-stage blades, the circulating water directly enters the cooling tower. Inside the cooling tower, heat is transferred from the circulating water to the air inside the tower through conduction and convection heat transfer. Therefore, there is a significant temperature difference between the air inside and outside the cooling tower. Due to the significant difference in air density at different temperatures, the air entering the bottom of the cooling tower becomes hot and rises, then is discharged through the air outlet at the top of the cooling tower, resulting in the complete waste of the wind energy carried by the airflow within the cooling tower. Summary of the Invention

[0003] The purpose of this application is to provide a wind power generation system for a thermal power plant cooling tower to solve the above-mentioned problems.

[0004] To achieve the above objectives, this application provides a wind power generation system for a cooling tower in a thermal power plant, comprising:

[0005] The cooling tower includes a vertical axis wind turbine, a wind turbine grid support, a baffle plate, a rectifier, a controller, a battery, and a load, all arranged along the circumference of the cooling tower. The cooling tower is a natural draft cooling tower. The baffle plate is horizontally positioned at the top of the air inlet of the cooling tower. The vertical axis wind turbine is mounted on the wind turbine grid support, and the axis of the vertical axis wind turbine is perpendicular to the ground.

[0006] The vertical axis wind turbine is connected in series and / or in parallel and then connected to the rectifier. The rectifier is connected to the controller, and the controller is connected to the battery and the load respectively.

[0007] The controller is used to control the charging and discharging of the battery.

[0008] Optionally, the system further includes:

[0009] baffle columns;

[0010] The flow guide baffle is circular, and the inner side of the flow guide baffle is fixedly or detachably installed on the outer wall of the cooling tower. The bottom of the flow guide baffle is fixedly or detachably connected to the top of the baffle column, and the bottom of the baffle column is fixedly installed on the ground.

[0011] Optionally, the wind turbine grid support is arranged opposite to the guide baffle, and the wind turbine grid support is fixed to the ground;

[0012] The vertical axis wind turbines are fixedly installed on the wind turbine grid support so that each vertical axis wind turbine is evenly distributed along the circumference of the cooling tower.

[0013] Optionally, the wind turbine grid support includes at least:

[0014] At least one support rod and multiple support columns are arranged along the circumference of the cooling tower. The support columns are vertically fixed to the ground and are fixedly connected to at least one of the support rods.

[0015] At least one vertical axis wind turbine is fixedly installed on each of the support columns.

[0016] Optionally, two vertical axis wind turbines are fixedly installed on each of the support columns, and each vertical axis wind turbine is coaxially arranged; or

[0017] Each of the support columns is fixedly installed with one of the vertical axis wind turbines, and the heights of the vertical axis wind turbines installed on any two adjacent support columns are different.

[0018] Optionally, the distance between any two adjacent vertical axis wind turbines installed on the support columns is not less than a first distance threshold and not greater than a second distance threshold.

[0019] The first distance threshold is the product of the blade rotation diameter of the vertical axis wind turbine and a first ratio, and the second distance threshold is the product of the blade rotation diameter of the vertical axis wind turbine and a second ratio, wherein the first ratio is less than the second ratio.

[0020] Optionally, the horizontal distance between the main shaft of the vertical axis wind turbine and the bottom of the cooling tower is the product of the blade rotation diameter of the vertical axis wind turbine and a third ratio.

[0021] Optionally, along a direction perpendicular to the guide baffle, the projection of any of the vertical axis wind turbines is located within the guide baffle;

[0022] Along the first radial direction, the outer edge of the guide baffle extends beyond any of the vertical axis wind turbines by a distance not less than a third distance threshold. The first radial direction is the radial direction on the guide baffle corresponding to the vertical axis wind turbine, and the third distance threshold is the product of the blade rotation diameter of the vertical axis wind turbine and a fourth ratio.

[0023] Optionally, the vertical projection of the baffle column is located between any two adjacent vertical axis wind turbines.

[0024] Optionally, the plurality of vertical axis wind turbines are divided into a plurality of vertical axis wind turbine groups along the circumference of the cooling tower, with each vertical axis wind turbine group connected in parallel and each vertical axis wind turbine in each vertical axis wind turbine group connected in series.

[0025] The embodiments provided in this application have the following beneficial effects:

[0026] This application utilizes multiple vertical axis wind turbines arranged along the circumference of a cooling tower. The airflow generated by the cooling tower cooling the circulating water drives the vertical axis wind turbines to generate electricity. The generated electricity is stored in batteries or used to power loads, thereby effectively utilizing the wind energy of the hot air in the cooling tower and improving energy efficiency.

[0027] Other features and advantages of the embodiments or implementations of this application will be described in detail in the following detailed description section. Attached Figure Description

[0028] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. In the drawings:

[0029] Figure 1 This schematic diagram illustrates the system structure of a wind power generation system for a cooling tower in a thermal power plant according to an embodiment of this application.

[0030] Figure 2 A schematic diagram of a wind turbine grid support according to an embodiment of this application is shown.

[0031] Figure 3 A schematic top view of the vertical axis wind turbine mounting structure according to an embodiment of this application is shown.

[0032] Explanation of reference numerals in the attached figures

[0033] 1-Natural draft cooling tower, 2-Demister, 3-Packing layer, 4-Air inlet, 5-Air outlet, 6-Guide baffle, 7-Baffle column, 8-Vertical axis wind turbine, 9-Wind turbine grid support, 91-Support connecting rod, 92-Support column, 10-Ground. Detailed Implementation

[0034] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the embodiments of this application.

[0035] To solve the above problems, such as Figure 1 As shown, this application provides a wind power generation system for a cooling tower in a thermal power plant, including: a vertical axis wind turbine generator, a rectifier, a controller, a battery, and a load arranged along the circumference of the cooling tower. The cooling tower is a natural draft cooling tower, and the axis of the vertical axis wind turbine generator is perpendicular to the ground. Multiple vertical axis wind turbine generators are connected in series and / or in parallel and then connected to the rectifier. The rectifier is connected to the controller, and the controller is connected to the battery and the load respectively. The controller is used to control the charging and discharging of the battery.

[0036] Thus, this application utilizes a vertical axis wind turbine installed along the circumference of the cooling tower. The airflow generated by the cooling tower cooling the circulating water drives the vertical axis wind turbine to generate electricity. The generated electricity is stored in a battery or used to power the load, thereby effectively utilizing the wind energy of the airflow in the cooling tower and improving energy efficiency.

[0037] Existing natural draft cooling towers are typically hyperbolic structures. The top of the natural draft cooling tower 1 is the air outlet 5. Inside the natural draft cooling tower 1, from top to bottom, are arranged a demister 2 and a packing layer 3. At the bottom of the natural draft cooling tower 1, air inlets 4 are evenly distributed circumferentially. It is understood that a circulating water spray system is also installed between the demister 2 and the packing layer 3. During circulating water cooling, hot water is drawn to the middle of the cooling tower and sprayed downwards through the circulating water spray system. The sprayed hot water forms a large number of vertical water films through the packing layer 3. When air enters from the air inlets 4 at the bottom of the natural draft cooling tower 1 and passes over the water film, it exchanges heat with the hot water, carrying away the heat. Because the density of the humid air decreases as it heats up, the air rises. The air entering the natural draft cooling tower 1 rises faster due to its increased heat, thus creating a suction effect on the air entering the bottom of the natural draft cooling tower 1, further drawing outside air into the natural draft cooling tower 1. When the air entering the natural draft cooling tower 1 exchanges heat with the hot water film, a large number of tiny mist droplets will be mixed in with the air. In order to prevent the droplets from being discharged outside the natural draft cooling tower 1 and causing loss of circulating water, the air is dehydrated by the demister 2. The cooled circulating water is collected and sent back to the circulating water circuit, thereby completing the cooling of the circulating water.

[0038] In this application, to fully utilize the wind energy generated by the natural draft cooling tower during the cooling of circulating water, multiple wind turbines are evenly arranged along the air inlet at the bottom of the natural draft cooling tower. Currently, wind turbine generator sets can be divided into horizontal axis and vertical axis types according to the installation method of the turbine shaft. Among them, horizontal axis wind turbines are mainly suitable for areas with no obstructions and uniform wind fields, while vertical axis wind turbines are suitable for complex terrain and environments with many obstacles. In addition, the structure of vertical axis wind turbines is relatively simpler than that of horizontal axis turbines, and its blades are perpendicular to the wind direction, so they are not affected by changes in wind direction and can achieve better results in various complex airflow environments. Therefore, in order to fully utilize the hot air generated by the cooling tower, the wind turbines in this application adopt vertical axis wind turbines, specifically, small vertical axis wind turbines.

[0039] Vertical axis wind turbines are connected to a rectifier via series and / or parallel connections. The rectifier converts the electrical energy generated by the wind turbine, and the controller then delivers the energy to batteries or loads within the power plant, effectively improving energy utilization. The controller is used to control the charging and discharging of the battery and to control the power supply to the loads within the power plant. For example, the controller may have a built-in battery charging and discharging management module to control the charging and discharging of the battery. Alternatively, the controller may have built-in transformer and inverter modules to deliver electrical energy from the wind turbine or battery to the load. Switching modules can also be installed between the controller and the load, and between the battery and the load. The controller controls the on / off state of these switches to allow the wind turbine to directly supply power to the load or to the load via the battery. The controller's control of battery charging and discharging and power supply to the load are existing technologies and are not limited here.

[0040] To more effectively utilize wind energy from the air entering the cooling tower, the system of this application further includes: a guide baffle 6 horizontally installed at the top of the air inlet 4 of the cooling tower, and baffle columns 7; the guide baffle 6 is annular, and the inner side of the guide baffle 6 is fixedly or detachably installed on the outer wall of the cooling tower, the bottom of the guide baffle 6 is fixedly or detachably connected to the top of the baffle columns 7, and the bottoms of multiple baffle columns 7 are fixedly installed on the ground 10.

[0041] The baffle 6 is annular and is installed at the top of the air inlet 4 of the cooling tower. The inner side of the baffle 6, i.e., the side closest to the outer wall of the cooling tower, is fixedly or detachably connected to the outer wall of the cooling tower, and the inner side of the baffle 6 is sealed to the outer wall of the cooling tower. The outer side of the baffle 6, i.e., the side away from the outer wall of the cooling tower, is fixed by baffle columns 7 arranged circumferentially along the baffle 6, so that the baffle 6 is horizontally installed at the top of the air inlet 4 of the cooling tower. The baffle columns 7 are evenly arranged circumferentially along the baffle 6, and one end of each baffle column 7 is fixedly connected to the bottom of the outer side of the baffle 6, and the other end is fixed to the ground 10. For example, the baffle 6 and the baffle columns 7 can be reinforced concrete structures or metal structures, and the baffle 6 and the baffle columns can be fixedly connected by casting or welding, which is not limited here.

[0042] like Figure 2 and Figure 3 As shown, in order to fix the vertical axis wind turbine 8, the system of this application also includes: a wind turbine grid support 9 fixed to the ground 10 and arranged opposite to the guide baffle 6. For example, in this application, the guide baffle 6 is a ring-shaped structure coupled to the bottom of the cooling tower. The wind turbine grid support 9 is arranged opposite to the guide baffle 6, that is, the wind turbine grid support 9 is arranged in the horizontal projection of the guide baffle 6 on the ground 10 and is also arranged in a ring shape. Multiple vertical axis wind turbines 8 are fixedly installed on the wind turbine grid support 9 so that each vertical axis wind turbine 8 is evenly distributed along the circumference of the cooling tower.

[0043] The wind turbine grid support 9 includes at least one support rod 91 arranged circumferentially along the cooling tower and multiple support columns 92. The multiple support columns 92 are vertically fixed to the ground 10 and are fixedly connected to at least one support rod 91. At least one vertical axis wind turbine 8 is fixedly installed on each support column 92. Specifically, the support rod 91 can also be annular, concentric with the guide baffle 6. The multiple support columns 92 are evenly arranged circumferentially along the guide baffle 6, and each support column 92 is positioned within the projection of the horizontal plane. The multiple support columns 92 are connected by the support rod 91 to form an annular structure concentric with the guide baffle 6. When installing the vertical axis wind turbine 8, it is fixedly installed on the support column 92, such that the axis of the vertical axis wind turbine 8 is parallel to the axis of the support column 92 and perpendicular to the guide baffle 6 or the ground 10. Among them, the support connecting rod 91 and the support column 92 can be made of reinforced concrete.

[0044] In one specific embodiment of this application, two vertical axis wind turbines 8 are fixedly installed on each support column 92, and each vertical axis wind turbine 8 is coaxially arranged. For example, multiple vertical axis wind turbines 8 can be arranged in a multi-layer distribution, such as a two-layer distribution. That is, two vertical axis wind turbines 8 are fixedly installed on each support column 92 and the two vertical axis wind turbines 8 are coaxially arranged. For example, on the same support column 92, a vertical axis wind turbine 8 is fixedly installed above the connection point between the current support column 92 and the support connecting rod 91, and a vertical axis wind turbine 8 is fixedly installed below the connection point between the current support column 92 and the support connecting rod 91, so that the axes of the two vertical axis wind turbines 8 are on the same line. In this way, two coaxial vertical axis wind turbines 8 are installed on each support column 92, so that all vertical axis wind turbines 8 are arranged in a two-layer distribution structure under the guide baffle 6. In this way, by setting up multiple layers of vertical axis wind turbines 8, the wind energy of the hot air generated during the cooling process of the cooling tower cooling the circulating water can be fully utilized.

[0045] In another specific embodiment of this application, in order to ensure that each vertical axis wind turbine 8 can fully utilize the airflow energy generated during the cooling process of the cooling tower for circulating water, a vertical axis wind turbine 8 is fixedly installed on each support column 92, and the heights of the vertical axis wind turbines 8 installed on any two adjacent support columns 92 are different. For example, a vertical axis wind turbine 8 is fixedly installed above the connection point between the current support column 92 and the support connecting rod 91. At the same time, for the adjacent support column 92 of the current support column 92, a vertical axis wind turbine 8 is fixedly installed below the connection point between the adjacent support column 92 and the support connecting rod 91, so that the vertical axis wind turbines 8 installed on the current support column 92 and the adjacent support column 92 are staggered and arranged in a cross pattern. In this way, since the adjacent vertical axis wind turbines 8 are distributed vertically and horizontally, the gaps formed between the adjacent vertical axis wind turbines 8 are conducive to the accelerated extraction of external air into the cooling tower, thereby enabling each vertical axis wind turbine 8 to fully utilize the airflow energy from the bottom of the cooling tower.

[0046] Therefore, in this application, the vertical projection of the baffle column 7 is located between any two adjacent vertical axis wind turbines 8, that is, the baffle column 7 is set at the corresponding position between two adjacent support columns 92. For example, if the vertical axis wind turbine 8 is a two-layer structure, the baffle column 7 is set at the corresponding position at the center of the radial connection line of two adjacent vertical axis wind turbines 8 on the same layer.

[0047] In this application, the distance between any two adjacent support columns 92 and the vertical axis wind turbine 8 installed is not less than a first distance threshold and not greater than a second distance threshold; the first distance threshold is the product of the blade rotation diameter of the vertical axis wind turbine 8 and a first ratio, and the second distance threshold is the product of the blade rotation diameter of the vertical axis wind turbine 8 and a second ratio, wherein the first ratio is less than the second ratio.

[0048] Wherein, the first ratio is 1 / 5 and the second ratio is 1 / 2, that is, the first distance threshold is 1 / 5 of the blade rotation diameter of the vertical axis wind turbine 8 and the second distance threshold is 1 / 2 of the blade rotation diameter of the vertical axis wind turbine 8. Alternatively, the distance between any two adjacent vertical axis wind turbines 8 installed on the support columns 92 is set to 1 / 2 of the blade rotation diameter of the vertical axis wind turbine 8.

[0049] In this application, the horizontal distance between the main shaft of the vertical axis wind turbine 8 and the bottom of the cooling tower is the product of the blade rotation diameter of the vertical axis wind turbine 8 and a third ratio. The third ratio is 1 / 2, meaning that the horizontal distance between the main shaft of the vertical axis wind turbine 8 and the bottom edge of the cooling tower is half the blade rotation diameter of the vertical axis wind turbine 8.

[0050] In this application, along a direction perpendicular to the guide baffle 6, the projection of any vertical axis wind turbine 8 is located within the guide baffle 6; along a first radial direction, the distance by which the outer edge of the guide baffle 6 extends beyond any vertical axis wind turbine 8 is not less than a third distance threshold. The first radial direction is the radial direction of the corresponding vertical axis wind turbine 8 on the guide baffle 6, and the third distance threshold is the product of the blade rotation diameter of the vertical axis wind turbine 8 and a fourth ratio. The fourth ratio is 1 / 2, meaning that the distance from the outer edge of the guide baffle 6 to the blade edge of each vertical axis wind turbine 8 in the radial direction is not less than 1 / 2 of the blade rotation diameter of the vertical axis wind turbine 8.

[0051] Meanwhile, in this application, the distance between the lower end of the blade of the vertical axis wind turbine 8 and the ground 10 does not exceed 0.5m.

[0052] Understandably, when multiple wind turbines operate in parallel, current converges from each turbine to a central connection point, then is commutated by a rectifier before entering the grid. Parallel connection increases the total power output of the power generation system and reduces the grid's dependence on any single turbine. Furthermore, if one turbine fails, the operation of the others remains unaffected, improving system reliability and stability. When multiple wind turbines operate in series, they form a cascade of power outputs. The output current from each turbine is further processed in the next turbine before being fed into the grid. Series connection can be used to convert higher voltage outputs to lower voltage outputs; however, there is a risk that the failure of a single turbine can affect the overall power generation capacity of the system.

[0053] Therefore, to improve the stability of the power generation system, this application divides multiple vertical axis wind turbines into multiple vertical axis wind turbine generator sets along the circumference of the cooling tower. These sets are connected in parallel, and within each set, the vertical axis wind turbines are connected in series. For example, by dividing the vertical axis wind turbines into multiple groups along the circumference of the cooling tower, the vertical axis wind turbines in each group are connected in series and then in parallel with other groups. This way, when a single vertical axis wind turbine fails, the overall operation of the power generation system is not affected. The electrical energy generated by the vertical axis wind turbines is commutated by a rectifier and then controlled by a controller to charge and discharge the batteries or power equipment within the plant, such as for lighting.

[0054] Taking the counter-flow natural draft cooling tower of an in-service 330MW coal-fired unit as an example, the water distribution area is 5500m². 2 The water tower is 115m high, the air inlet is 7.83m high, and the designed circulating water volume is 34,000m³. 3 The water spray height is 9.75m, the tower pool diameter is 98.37m, the throat diameter is 49.30m, the tower top diameter is 51.73m, the average inlet diameter is 77.89m, and the wind speed in the packing layer is 1.2m / s; based on this, the inlet area can be calculated to be 1283.1m². 2 Airflow 23.76 million m³ 3 The average wind speed at the air inlet is 5.14 m / s, and the air kinetic energy is 112.64 kJ. Based on the analysis of a vertical axis wind turbine power conversion efficiency of 30%, this application can achieve a power generation of 33.79 kW.

[0055] In summary, this application utilizes vertical axis wind turbine generators arranged around the air inlet of the cooling tower to recover the kinetic energy of naturally circulating cold air and generate a certain amount of electricity, which can be used for factory lighting, etc. At the same time, the uniform arrangement of the vertical axis fans and their guiding effect on the air intake of the cooling tower can further reduce the adverse effects of environmental crosswinds on the cooling effect of the cooling tower.

[0056] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0057] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A wind power generation system for a cooling tower of a thermal power plant, characterized in that, The system comprises: a plurality of vertical axis wind turbines arranged circumferentially along the cooling tower, a wind turbine grid support, a guide baffle, a rectifier, a controller, a storage battery and a load, wherein the cooling tower is a natural draft cooling tower, the guide baffle is horizontally arranged on the top of the air inlet of the cooling tower, the vertical axis wind turbine is installed on the wind turbine grid support, and the axial direction of the vertical axis wind turbine is perpendicular to the ground; a plurality of the vertical axis wind turbines are connected in series and / or in parallel and then connected to the rectifier, the rectifier is connected to the controller, and the controller is respectively connected to the storage battery and the load; the controller is used for charge and discharge control of the storage battery; the system further comprises: a baffle stand column; the guide baffle is annular, and the inner side of the guide baffle is fixedly or detachably mounted on the outer wall of the cooling tower, the bottom of the guide baffle is fixedly or detachably connected to the top of a plurality of the baffle stand columns, and the bottom of the baffle stand column is fixedly mounted on the ground; the wind turbine grid support is arranged opposite to the guide baffle, and the wind turbine grid support is fixedly mounted on the ground; the vertical axis wind turbine is fixedly installed on the wind turbine grid support, so that each vertical axis wind turbine is uniformly distributed along the circumference of the cooling tower; the wind turbine grid support at least comprises: at least one support connecting rod and a plurality of support stand columns arranged circumferentially along the cooling tower, the support stand column is vertically fixed to the ground, and the support stand column is fixedly connected to at least one support connecting rod; at least one vertical axis wind turbine is fixedly installed on the support stand column; two vertical axis wind turbines are fixedly installed on each support stand column, and each vertical axis wind turbine is coaxially arranged; or one vertical axis wind turbine is fixedly installed on each support stand column, and the heights of the vertical axis wind turbines installed on any two adjacent support stand columns are different, so that the adjacent vertical axis wind turbines are distributed in an up-and-down cross manner; the distance between the vertical axis wind turbines installed on any two adjacent support stand columns is not less than a first distance threshold value and not greater than a second distance threshold value; the first distance threshold value is the product of the blade rotation diameter of the vertical axis wind turbine and a first ratio value, and the second distance threshold value is the product of the blade rotation diameter of the vertical axis wind turbine and a second ratio value, the first ratio value is less than the second ratio value, wherein the first ratio value is 1 / 5, and the second ratio value is 1 / 2.

2. The thermal power plant cooling tower wind energy power generation system according to claim 1, characterized in that, the horizontal distance between the main shaft of the vertical axis wind turbine and the bottom of the cooling tower is the product of the blade rotation diameter of the vertical axis wind turbine and a third ratio value.

3. The thermal power plant cooling tower wind energy power generation system according to claim 1, characterized in that, in a direction perpendicular to the guide baffle, the projection of any vertical axis wind turbine is located in the guide baffle. Along a first radial direction, an outer edge of the guide baffle exceeds a distance of any vertical-axis wind turbine by no less than a third distance threshold, the first radial direction being a radial direction on the guide baffle corresponding to the vertical-axis wind turbine, and the third distance threshold being a product of a blade rotating diameter of the vertical-axis wind turbine and a fourth ratio.

4. The thermal power plant cooling tower wind energy power generation system according to claim 1, characterized in that, The projection of the baffle column in a vertical direction is between any two adjacent vertical-axis wind turbines.

5. The thermal power plant cooling tower wind energy power generation system according to claim 1, characterized in that, A plurality of the vertical-axis wind turbines are divided into a plurality of vertical-axis wind turbine groups along a circumferential direction of the cooling tower, the vertical-axis wind turbines in each vertical-axis wind turbine group are connected in parallel, and the vertical-axis wind turbines in each vertical-axis wind turbine group are connected in series.

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