A cooling tower system

Abstract

The present invention relates to a cooling tower system, which comprises a cooling tower, a wind chamber and a heat collection shell; the heat collection shell is arranged on the outer wall of the cooling tower and encloses a wind duct with the outer wall of the cooling tower. The lower end of the wind duct is an air inlet communicating with the external air, and the top end is communicated with the wind chamber. The heat collection shell can collect external heat to increase the temperature in the wind duct; the wind chamber is provided with a jet orifice, and the jet orifice is arranged at the top outlet of the cooling tower. This cooling tower system can improve the cooling capacity of the cooling tower while ensuring high stability and economy.

Description

Technical Field

[0001] The present invention relates to the technical field of cooling equipment, and particularly relates to a cooling tower system. Background Art

[0002] As an important part of a wet cooling unit, a wet cooling tower is a key device that affects the back pressure of a steam turbine condenser and reduces the steam consumption rate of the steam turbine. However, due to various internal and external factors, the cooling capacity of the cooling tower is insufficient. Especially in summer with high temperatures, the insufficient cooling capacity brings adverse conditions to the economic, safe, and stable operation of the steam turbine.

[0003] Currently, there are many solutions to improve the cooling capacity of the cooling tower of a wet cooling unit. Commonly, mechanical power such as fans and blowers arranged at the top and bottom of the cooling tower is used to strengthen the air flow inside the cooling tower, thereby improving the cooling performance of the cooling tower. Such solutions require a large amount of electricity consumption, and have a large equipment investment and maintenance volume, and high annual operating costs, which is not conducive to the economic operation of the power plant; another is to change the flow mode of the ambient wind, integrate the ambient wind resources, and maximize the utilization rate of the ambient wind. Such solutions have poor stability during the whole-year operation, strong dependence on the climate, and are prone to failure.

[0004] Therefore, how to improve the cooling capacity of the cooling tower while ensuring high stability and economy is a technical problem that needs to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of the present invention is to provide a cooling tower system that can improve the cooling capacity of the cooling tower while ensuring high stability and economy.

[0006] To solve the above technical problem, the present invention provides a cooling tower system, which includes a cooling tower, a wind chamber, and a heat collection shell; the heat collection shell is arranged on the outer wall of the cooling tower and encloses a wind duct with the outer wall of the cooling tower. The lower end of the wind duct is an air inlet communicating with the external air, and the top end is communicated with the wind chamber. The heat collection shell can collect external heat to increase the temperature in the wind duct; the wind chamber is provided with a jet port, and the jet port is arranged at the top outlet of the cooling tower.

[0007] After the external air enters the wind duct from the air inlet at the bottom of the wind duct, the heat collection shell can collect external heat to increase the temperature in the wind duct, that is, the air entering the wind duct from the air inlet is heated, so that a chimney effect is formed in the wind duct, and then the external air can continuously enter the wind duct from the air inlet and enter the wind chamber after being heated. The higher the cooling tower and the longer the wind duct, the more obvious the chimney effect. In this way, under the heat collection effect of the heat collection shell, the air in the wind duct will continuously heat up and flow, so as to continuously heat the external air and transport it into the wind chamber.

[0008] The hot air entering the air storage chamber can be ejected from the jet nozzles towards the top outlet of the cooling tower. After mixing with the wet saturated air discharged from the cooling tower, the air temperature at the top outlet increases. Due to the effect of thermal expansion and contraction, the density and pressure of the gas at this location decrease. As a result, a pressure difference is formed between the inside of the cooling tower and the top outlet of the cooling tower (the pressure inside the cooling tower is greater), which can accelerate the movement of the air inside the cooling tower towards the top outlet, thereby increasing the gas flow rate inside the cooling tower. In the same time, the amount of air volume for heat exchange with the coolant inside the cooling tower is increased, which can effectively improve the cooling effect of the cooling tower and ultimately improve the steam turbine efficiency.

[0009] This cooling tower system supplies hot air to the air storage chamber through the air ducts provided on the outer wall of the cooling tower, and then sprays the hot air to the top outlet of the cooling tower to mix with the saturated wet flue gas, increasing the air density difference between the inside of the cooling tower and the environment, strengthening the natural suction capacity of the cooling tower, increasing the air flow rate inside the cooling tower, and enhancing the cooling effect. Moreover, the heat collection shell does not require an additional placement space, which can increase the added value of the space on the outer surface of the cooling tower. In addition, the heat collection shell collects external heat and raises the temperature of the air in the air duct. The heated air enters the air storage chamber, and during this process, no additional power is required, which has good economy and high stability.

[0010] In addition, after the hot air in the air storage chamber is ejected from the jet nozzles and mixed with the wet saturated air at the top outlet of the cooling tower, the wet saturated air becomes unsaturated wet air, which can reduce the formation of "white smoke" during the mixing process of the air at the top outlet of the cooling tower and the air outside the cooling tower, thereby reducing the "white smoke" pollution.

[0011] Optionally, the heat collection shell includes a photovoltaic module and a partition. The photovoltaic module is formed by splicing a plurality of photovoltaic panels, and the partition is connected between the photovoltaic module and the outer wall of the cooling tower to form the air duct.

[0012] Optionally, the number of the air ducts is at least two. A partition is provided between two adjacent air ducts, and a photovoltaic module is provided on the outer wall of each air duct.

[0013] Optionally, an opening adjusting member is further provided between the air duct and the air storage chamber.

[0014] Optionally, the air storage chamber is communicated with the waste gas heat source of the power plant and can collect the waste gas heat source.

[0015] Optionally, the air storage chamber is circumferentially provided at the top of the cooling tower, and a plurality of jet nozzles are circumferentially provided on the air storage chamber.

[0016] Optionally, each jet nozzle is uniformly arranged along the circumference of the cooling tower.

[0017] Optionally, the power source of the cooling tower system includes an in-plant photovoltaic power generation system and the plant's self-provided power. The in-plant photovoltaic power generation system includes a photovoltaic power distribution room and photovoltaic modules installed in the idle areas within the plant. The photovoltaic modules include a plurality of photovoltaic panels, and the idle areas include at least one of the cooling tower area, the coal bunker area, the office building area, and the dust collector area. Description of the Drawings

[0018] Figure 1 is a schematic structural diagram of the cooling tower system provided by an embodiment of the present invention;

[0019] Figure 2 is Figure 1 top view of;

[0020] Figure 3 is a schematic structural diagram of the photovoltaic module.

[0021] Attached Figures 1-3 In, the reference numerals are described as follows:

[0022] 1 - Cooling tower, 11 - Outer wall, 12 - Top outlet, 13 - Blower, 14 - Water tank, 15 - Packing, 16 - Coolant nozzle;

[0023] 2 - Air chamber, 21 - Jet port;

[0024] 3 - Heat collection shell, 31 - Photovoltaic panel, 32 - Partition;

[0025] 4 - Air duct, 41 - Air inlet;

[0026] 5 - Opening adjustment member. Detailed Embodiment

[0027] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the drawings and specific embodiments.

[0028] Please refer to Figures 1-3 , Figure 1 is a schematic structural diagram of the cooling tower system provided by an embodiment of the present invention; Figure 2 is Figure 1 top view of; Figure 3 is a schematic structural diagram of the photovoltaic module.

[0029] An embodiment of the present invention provides a cooling tower system, as shown in Figure 1As shown in the figure, the cooling tower system includes a cooling tower 1, a wind chamber 2, and a heat collection shell 3. Among them, the cooling tower 1 is the cooling tower 1 in the prior art, which is used to exchange heat with the coolant through ventilation to reduce the temperature of the coolant. Its bottom is successively provided with a water tank 14, a packing 15, and a coolant nozzle 16 from bottom to top. The coolant nozzle 16 sprays the relatively high-temperature coolant onto the packing 15. The external air enters from the bottom of the tower, exchanges heat with the coolant through the packing 15, takes away the heat and rises upward, and finally discharges from the top outlet 12 of the cooling tower 1. The coolant in the packing 15 cools down and converges into droplets, which fall into the water tank 14 and participate in the cycle cooling. The heat collection shell 3 is arranged on the outer wall 11 of the cooling tower 1 and encloses a wind duct 4 with the outer wall 11 of the cooling tower 1. The lower end of the wind duct 4 is an air inlet 41 communicating with the external air, and the top end is communicating with the wind chamber 2. The heat collection shell 3 can collect external heat to increase the temperature in the wind duct 4, and the wind chamber 2 is provided with a jet orifice 21, and the jet orifice 21 is arranged at the top outlet 12 of the cooling tower 1.

[0030] Specifically, after the external air enters the wind duct 4 from the air inlet 41 at the bottom of the wind duct 4, the heat collection shell 3 can collect external heat to increase the temperature in the wind duct 4, that is, the air entering the wind duct 4 from the air inlet 41 is heated, causing the air to form a chimney effect in the wind duct 4. As a result, the external air can continuously enter the wind duct 4 from the air inlet 41, and after being heated, it is introduced into the wind chamber 2. The higher the height of the cooling tower 1 and the longer the wind duct 4, the more obvious the chimney effect. In this way, under the heat collection effect of the heat collection shell 3, the air in the wind duct 4 will continuously heat up and flow, so as to continuously heat the external air and transport it into the wind chamber 2.

[0031] The hot air entering the wind chamber 2 can be ejected from the jet orifice 21 towards the top outlet 12 of the cooling tower 1. After being mixed with the wet saturated air discharged from the cooling tower 1, the temperature of the air at the top outlet 12 increases. Due to the effect of thermal expansion and contraction, the density and pressure of the gas here decrease. As a result, a pressure difference is formed between the inside of the cooling tower 1 and the top outlet 12 of the cooling tower 1 (the pressure inside the cooling tower 1 is larger), which can accelerate the movement of the air inside the cooling tower 1 towards the top outlet 12, thereby increasing the gas flow rate inside the cooling tower 1. In the same time, the amount of air volume exchanging heat with the coolant inside the cooling tower 1 is increased, which can effectively improve the cooling effect of the cooling tower 1 and ultimately improve the steam turbine efficiency.

[0032] In addition, after the hot air in the wind chamber 2 is ejected from the jet orifice 21 and mixed with the wet saturated air at the top outlet 12 of the cooling tower 1, the wet saturated air becomes unsaturated wet air, which can reduce the formation of "white smoke" during the mixing process of the air at the top outlet 12 of the cooling tower 1 and the air outside the cooling tower 1, thereby reducing the "white smoke" pollution.

[0033] The cooling tower system provided in this embodiment supplies hot air to the air chamber 2 through the air duct 4 provided on the outer wall 11 of the cooling tower 1, and then sprays the hot air to the top outlet 12 of the cooling tower 1 to mix with the saturated wet flue gas, increasing the air density difference between the inside of the cooling tower 1 and the environment, strengthening the natural suction capacity of the cooling tower 1, increasing the air flow rate inside the cooling tower 1, and improving the cooling effect. Moreover, the heat collection shell 3 does not require an additional placement space, which can increase the added value of the space on the outer surface of the cooling tower 1. In addition, the heat collection shell 3 collects external heat and raises the temperature of the air in the air duct 4. The heated air enters the air chamber 2, and during this process, no additional power is required, which is economical and highly stable.

[0034] In the above embodiment, the heat collection shell 3 includes a photovoltaic module and a partition 32. Among them, the photovoltaic module is formed by splicing a plurality of photovoltaic panels 31. The partition 32 is connected between the photovoltaic module and the outer wall 11 of the cooling tower 1 to enclose the above-mentioned air duct 4. Adjacent photovoltaic panels 31 are bonded together by sealant to form a complete plane (as Figure 3 shown). Under the irradiation of high-intensity sunlight, the surface temperature of the photovoltaic panels 31 is relatively high, and the air temperature entering the air duct 4 from the air inlet 41 is relatively low. The air can exchange heat with the photovoltaic panels 31 to increase the air temperature in the air duct 4, forming a strong chimney effect inside the air duct 4.

[0035] Of course, in this embodiment, the heat collection shell 3 can also collect external heat by providing glass plates, iron sheets, etc. When sunlight directly irradiates the glass plates or iron sheets, the air temperature inside the air duct 4 can be increased. And setting the heat collection shell 3 as a scheme with a photovoltaic module can not only increase the temperature in the air duct 4, but also the photovoltaic panels 31 can generate electricity. This part of the electricity can be connected to the grid or used as plant electricity, increasing the economic benefits of the power plant. Moreover, since the cold air in the air duct 4 exchanges heat with the photovoltaic module, the temperature of each photovoltaic panel 31 can be reduced, which is beneficial to improving the power generation efficiency of the photovoltaic panels 31 and enhancing the utilization of solar energy.

[0036] Specifically, the photovoltaic module can be arranged within a certain height range on the sunny side of the outer wall 11 above the bottom air inlet of the cooling tower 1. The specific height position is not specifically limited here and can be set according to the specific position of the on-site cooling tower 1. For example, the photovoltaic module can be designed and arranged on the sunny side of the outer wall 11 of the cooling tower 1 in a semi-circular direction according to the local solar angle to achieve the highest degree of solar energy utilization.

[0037] In the above embodiments, the number of air ducts 4 is at least two, and the above-mentioned partition plate 32 is provided between two adjacent air ducts 4, and photovoltaic modules are respectively provided on the outer walls 11 of the air ducts 4. That is to say, at least two air ducts 4 are arranged along the circumferential direction of the cooling tower 1, at least one photovoltaic module is correspondingly provided for each air duct 4, and one photovoltaic module includes at least two rows of photovoltaic panels 31 formed. With such an arrangement, the cross-sectional area of a single air duct 4 can be reduced. Since the photovoltaic modules are arranged along the circumferential direction on the outer wall 11 of the cooling tower 1, when sunlight shines, the photovoltaic module can collect enough heat to raise the temperature of the air in the corresponding air duct 4. At different times, the angle of sunlight irradiation will change. The heat generated by some of the photovoltaic modules irradiated by sunlight can raise the temperature of the air in the corresponding air duct 4, and then a chimney effect can be formed in this air duct 4, and the hot air is introduced into the air chamber 2. However, the heat generated by some photovoltaic modules due to insufficient light is not enough to form a chimney effect in the corresponding air duct 4, so the air in this air duct 4 will not flow. With such an arrangement, the photovoltaic modules and the air ducts 4 can be miniaturized, with good flexibility, avoiding the situation where all photovoltaic modules are used to heat one air duct 4, resulting in heat loss.

[0038] That is to say, the heat collection shell 3 can be formed by the above-mentioned photovoltaic module with a planar structure formed by bonding the photovoltaic panels 31 and the partition plate 32. The partition plate 32 is used to isolate the air duct 4 from the external air, and at the same time, the partition plate 32 is also used to isolate two adjacent air ducts 4. Specifically, the side surface of the partition plate can be set perpendicular to the outer wall 11 surface of the cooling tower 1. At the same time, the partition plate 32 can also be used to arrange the power cables or other equipment of the photovoltaic power generation system, providing support and protection for the power cables or other equipment.

[0039] In the above embodiments, an opening degree adjusting member 5 is further provided between each air duct 4 and the air chamber 2. The opening degree adjusting member 5 can control the on-off of the air duct 4 and the air chamber 2 and can adjust the air volume. When the temperature in some air ducts 4 is relatively low, the corresponding opening degree adjusting member 5 will block the ventilation between the air duct 4 and the air chamber 2, preventing the hot air in the air chamber 2 from flowing back into the air duct 4. When the air entering the air duct 4 heats up slowly due to external environmental factors, etc., the air needs to stay in the air duct 4 for a longer time. At this time, the opening degree of the opening degree adjusting member 5 is reduced to reduce the flow rate of the air in the air duct 4 flowing into the air chamber 2, thereby prolonging the residence time of the air in the air duct 4 and ensuring its heating effect. Of course, in this embodiment, the specific structure of the opening degree adjusting member 5 is not limited, and it can be set as a damper or a valve, etc.

[0040] In the above embodiments, the air chamber 2 is connected to the waste gas heat source of the power plant, and the air chamber 2 can collect the waste gas heat source. The waste gas heat source mentioned here refers to various waste hot gases with relatively high temperatures generated by the power plant. How to collect it specifically is the prior art well-known to those skilled in the art, such as transporting the waste hot gas to be discharged into the air chamber 2 through a pipeline.

[0041] That is to say, the waste hot air of the power plant is introduced into the air chamber 2, and is mixed with the hot air sent into the air chamber 2 by the air duct 4 (referred to as "hot air"), and then they are jointly introduced into the top outlet 12 of the cooling tower 1. With such a setting, the heat in the waste gas heat source generated by the power plant can be recycled to further improve the cooling effect of the cooling tower 1.

[0042] In the above embodiment, the air chamber 2 is arranged circumferentially at the top of the cooling tower 1, and a plurality of the above-mentioned jet ports 21 are arranged circumferentially on the air chamber 2. Alternatively, the air chamber 2 can also be arranged at other positions such as on the ground. Arranging the air chamber 2 at the top of the cooling tower 1 can reduce the overall floor space of the cooling tower system and make the system as a whole more regular.

[0043] Furthermore, as Figure 2 shown, the jet ports 21 are evenly arranged along the circumference of the cooling tower 1, which is beneficial to evenly spraying the hot air to the inner side of the top exhaust port of the cooling tower 1 and mixing it evenly with the wet flue gas. Specifically, the number of the jet ports 21 is not limited, preferably 4 or more. In this embodiment, it is set to six to optimize the mixing degree of the hot air and the wet saturated flue gas in the cooling tower 1.

[0044] In the above embodiment, the cooling tower 1 includes a fan 13 for providing air volume from the outside to the inside of the tower bottom. The setting of the fan 13 can make up for the cooling capacity of the cooling tower 1 in adverse environments and ensure the cooling effect of the cooling tower 1.

[0045] In the above embodiment, the power sources of the cooling tower system include the in-plant photovoltaic power generation system and the in-plant self-provided power (the standby power stored in the plant). Among them, the in-plant photovoltaic power generation system includes a photovoltaic power distribution room and photovoltaic modules arranged in the idle sites in the plant. The photovoltaic modules are similar to the above-mentioned photovoltaic components and include a plurality of photovoltaic panels 31. The idle sites include at least one of the cooling tower 1 area, the coal bunker area, the office building area, and the dust collector area. That is to say, the in-plant photovoltaic power generation system includes the above-mentioned photovoltaic components arranged on the outer wall of the cooling tower 1. Specifically, the photovoltaic modules can be arranged in one area or multiple areas among the outer wall 11 of the cooling tower 1 (i.e., the photovoltaic components of the above-mentioned heat collection shell), the roof of the coal bunker, the outer wall 11 and the roof of the office building, and the top sunshade of the dust collector. By making full use of the idle spaces in the cooling tower 1, coal bunker, office building, dust collector, etc. in the plant, photovoltaic panels 31 are laid to generate electricity. The photovoltaic power distribution room can distribute the electricity generated by each photovoltaic module to the above-mentioned fan 13, other in-plant electrical equipment or grid-connected power supply as needed. The in-plant photovoltaic power generation system makes full use of the idle spaces in the plant, provides an idea for the comprehensive utilization of traditional energy and new energy, increases the added value of the idle spaces in the power plant, and improves the overall efficiency of the power plant units at the same time.

[0046] Specifically, the electricity consumption of the cooling tower system includes various components that require electric power for driving, such as the air blower 13, the coolant nozzle 16, the air jet outlet 21 of the air chamber 2, the photovoltaic panel 31, the opening adjustment member 5, etc. Taking the air blower 13 as an example, when it operates during the day, the power source of the air blower 13 can be provided by the in-plant photovoltaic power generation system in the idle space of the whole plant. At night, due to the improvement of the cooling performance of the cooling tower 1, the air blower 13 can stop operating or use the in-plant self-provided power. Of course, the air blower 13 can also be powered by the power grid. By using the in-plant photovoltaic power generation system and the in-plant self-provided power to supply power to the air blower 13, the cost can be saved and the economy can be improved.

[0047] Specifically, the working conditions of the cooling tower system provided in this embodiment under different environmental conditions will be described in detail below.

[0048] (1) During the day in summer, the air blower 13 of the cooling tower 1 is in the working state.

[0049] The photovoltaic module is under high-intensity solar radiation, and the surface temperature is relatively high. The air entering the air duct 4 has a large temperature rise after heat exchange with the photovoltaic module, and a strong chimney effect is formed inside the air duct 4. At this time, the opening adjustment member 5 is in the open state, and the hot air in the air duct 4 continuously enters the air chamber 2 to be mixed with the waste gas heat source, further increasing the temperature of the hot air. The hot air is sprayed into the top outlet 12 of the cooling tower 1 through the air jet outlet 21, reducing the air density at the top outlet 12 and forming a local negative pressure, accelerating the upward flow of the air at the bottom of the cooling tower 1.

[0050] When the solar angle changes, the opening adjustment member 5 corresponding to the photovoltaic module that cannot receive solar radiation is closed in time to avoid cold air entering the air chamber 2 and also avoid the waste caused by the hot air in the air chamber 2 flowing into the air duct 4.

[0051] (2) During the day in spring and autumn, the air blower 13 of the cooling tower 1 is in the working state.

[0052] Due to the low solar radiation intensity, the air temperature in the air duct 4 is relatively low. At this time, the opening adjustment member 5 is in a state of a relatively small opening, controlling the air volume entering the air chamber 2, and at the same time increasing the waste gas heat source entering the air chamber 2, so that the mixed air in the air chamber 2 can reach a relatively high temperature to meet the requirement of increasing the air temperature at the exhaust outlet of the cooling tower 1.

[0053] When the solar angle changes, the opening adjustment member 5 corresponding to the photovoltaic module that cannot receive solar radiation is closed in time to avoid cold air entering the air chamber 2 and also avoid the waste caused by the hot air in the air chamber 2 flowing into the air duct 4.

[0054] (3) In winter, the solar radiation is low and the ambient temperature is low. The opening adjustment member 5 is in a fully closed state, and at the same time, the supply of the waste gas source is stopped. At this time, since the ambient temperature is low, the cooling tower 1 has good cooling performance, and the air supply fan 13 stops working. The electric power generated by the whole plant's photovoltaic power generation system can be used for other plant equipment or grid connection.

[0055] (4) Throughout the year at night, since the ambient temperature is low at night and the cooling tower 1 has good cooling performance, the air supply fan 13 stops working, the opening adjustment member 5 is in a closed state, and the supply of the waste gas heat source is stopped.

[0056] In this embodiment, the photovoltaic panel 31 can be made of single-crystalline silicon material or polycrystalline silicon material, and no specific limitation is made here. Moreover, there are no requirements for the sizes (such as length, width, etc.) of the photovoltaic panels 31.

[0057] The above is only the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A cooling tower system, characterized in that, It includes a cooling tower (1), a wind chamber (2) and a heat collection shell (3); The heat collection shell (3) is arranged on the outer wall (11) of the cooling tower (1) and encloses a wind channel (4) with the outer wall (11) of the cooling tower (1). The lower end of the wind channel (4) is an air inlet (41) communicating with the external air, and the top end is communicated with the wind chamber (2). The heat collection shell (3) can collect external heat to increase the temperature in the wind channel (4); The wind chamber (2) is provided with a jet orifice (21), and the jet orifice (21) is arranged at the top outlet (12) of the cooling tower (1); The heat collection shell (3) includes a photovoltaic module and a partition board (32). The photovoltaic module is formed by splicing a plurality of photovoltaic panels (31). The partition board (32) is connected between the photovoltaic module and the outer wall (11) of the cooling tower (1) to form the wind channel (4); The number of the wind channels (4) is at least two. A partition board (32) is arranged between adjacent two wind channels (4), and the outer walls (11) of each wind channel (4) are respectively provided with the photovoltaic module.

2. The cooling tower system according to claim 1, wherein An opening degree adjusting member (5) is further arranged between the wind channel (4) and the wind chamber (2).

3. The cooling tower system according to claim 1 or 2, characterized in that, The wind chamber (2) is communicated with the waste gas heat source of the power plant and can collect the waste gas heat source.

4. The cooling tower system according to claim 1 or 2, characterized in that, The wind chamber (2) is arranged along the circumference at the top end of the cooling tower (1), and a plurality of the jet orifices (21) are arranged along the circumference of the wind chamber (2).

5. The cooling tower system according to claim 4, wherein Each of the jet orifices (21) is uniformly arranged along the circumference of the cooling tower (1).

6. The cooling tower system according to claim 1 or 2, characterized in that The power source of the cooling tower system includes an in-plant photovoltaic power generation system and the plant's own power supply. The in-plant photovoltaic power generation system includes a photovoltaic power distribution room and photovoltaic modules arranged in the idle areas in the plant. The photovoltaic modules include a plurality of photovoltaic panels (31). The idle areas include at least one of the cooling tower area, the coal bunker area, the office building area and the dust collector area.

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