Pumped storage power station and sunning pool integrated energy storage irrigation system

Abstract

The invention discloses a pumped storage power station and sunning pool integrated energy storage irrigation system, and relates to the technical field of pumped storage, the system comprises a pumped storage power station and a sunning pool below the pumped storage power station, the pumped storage power station realizes pumped storage from a lower reservoir to an upper reservoir through a first pumped storage device, and the upper reservoir to the lower reservoir / sunning pool discharges water to generate power; automatic pumped storage is realized through the intelligent control device; a second pumped storage device is arranged between the water sunning pool and the upper reservoir, so that water is discharged to the water sunning pool for power generation, water at different water levels / temperatures of the upper reservoir is automatically discharged to the water sunning pool through a water delivery control system, and the temperature of the water sunning pool is increased; the temperature of the water body is increased through water drying in a water drying pool and an upper reservoir, then farmland irrigation is conducted, and the problem of cold water damage is avoided; according to the system, intelligent and automatic peak shifting power generation and intelligent temperature adjustment of irrigation water are achieved, and the pumped storage technology and application thereof are effectively expanded.

Description

Technical Field

[0001] The present invention relates to the technical field of pumped storage, and in particular to an integrated energy storage irrigation system of a pumped storage power station and a sun-drying pool. Background Art

[0002] With the continuous development of the manufacturing industry, my country's energy demand continues to increase, and fossil energy will eventually run out. People are exploring more and more renewable energy, especially the traditional pumped storage technology in the water conservancy field is becoming more and more perfect. Then how to better explore more application scenarios in the existing pumped storage technology field, and develop more advanced and practical technologies on the basis of pumped storage technology to further develop pumped storage technology so that its technical application is more extensive and the technical effect is more significant, has become an important research and application direction.

[0003] In some traditional pumped-storage power stations, the operation and stop of the pumped-storage device need to be manually operated. For these pumped-storage power stations, their working efficiency is low and the storage capacity of long-term operation will be affected.

[0004] In addition, in practical applications, taking the Northeast region of my country as an example, the low water temperature caused by the low temperature has become a very thorny problem for farmland watering and irrigation. Specifically, many crops are irrigated with more common water supply, such as well field pumping irrigation and tap water irrigation, which will bring great cold water damage to the growth of crops. As one solution, water supply in the sun-drying pool that increases the water temperature through sun exposure has become a very economical measure, but how to replenish the water in the sun-drying pool more intelligently and reasonably, such as increasing the temperature of the water in the sun-drying pool and irrigating after sun exposure, and how to trigger the pumped-storage power station to generate electricity when the water is replenished has become a new field of energy exploration. Solving this problem has high technical value for overcoming the cold water damage problem caused by crop watering and irrigation, and further realizing the technical extension of power generation and energy storage. Summary of the invention

[0005] The purpose of the present invention is to solve some or all of the shortcomings of the prior art, and propose an integrated energy storage irrigation system of a pumped storage power station and a sun-drying pool, and provide the following technical solutions: A pumped storage power station and a sun-drying pool integrated energy storage irrigation system, the pumped storage power station comprising a lower reservoir, an upper reservoir, a first water transfer system therebetween, and a first pumped storage device; The first pumped storage device further comprises a water pump turbine, a generator motor, and an intelligent control device electrically connected to the pumped storage device and used to realize the timed pumping of the first pumped storage device, wherein the pumped storage device is connected to the power grid via a transmission line; The sun drying pool is placed at the side of the upper reservoir of the pumped storage power station, such as at the lower side; A second pumped storage device capable of releasing water for power generation is provided between the upper reservoir and the sun-drying pool and is connected to the power grid via a power transmission line. A water supply control system electrically connected to the second pumped storage device automatically controls the water supply from the upper reservoir to the sun-drying pool according to temperature and / or liquid level.

[0006] Preferably, the intelligent control device includes a first control processing module, a first power supply circuit connected to the first control processing module, and an electromagnetic relay installed in the first power supply circuit and connected to the first control processing module; the first control processing module is provided with a PLC controller.

[0007] Preferably, the first control processing module of the intelligent control device is provided with a timer with a clock function, and the timer is preset with two timing functions. The first control processing module triggers the control functions at the preset timing moments, that is, it also controls the closing and opening of the electromagnetic relay and realizes the connection and disconnection of the first power supply circuit, and then controls the first pumped storage device to start and stop working.

[0008] Preferably, the timer sets the first timing moment in the interval of 22:30-23:30, and the first control processing module triggers the control function of closing the electromagnetic relay at the first timing moment, and sets the second timing moment in the interval of 5:30-6:30, and the first control processing module triggers the control function of opening the electromagnetic relay at the second timing moment, so that the pumped storage device works in the time period from the first timing moment to the second timing moment to realize pumped storage during the low peak period of electricity consumption at night.

[0009] Preferably, when the first pumped storage device is powered on and working during the low-peak period of electricity consumption at night, the generator motor is controlled to work as a motor, and the water pump turbine is driven to operate as a water pump to pump water from the lower reservoir to the upper reservoir through the first water transfer system, thereby converting the low-peak electricity at night into the gravitational potential energy of water for storage.

[0010] Preferably, in the first pumped-storage device, the generator motor is a bidirectional reversible generator motor, and the pump-turbine is a reversible pump-turbine, so that when the upper reservoir releases water to the lower reservoir through the first water transfer system, the reversible pump-turbine is driven to operate as a turbine, and the generator motor is driven to operate as a generator, so that the first pumped-storage device generates electricity and transmits electrical energy to the power grid system.

[0011] Preferably, the water delivery control system includes a temperature monitoring module, a second control processing module, a plurality of second power supply circuits, and a plurality of electrically controlled valves.

[0012] Preferably, the second pumped-storage device includes a second water delivery system, which is provided with water outlets at different heights of the upper reservoir, and multiple electrically-controlled valves are installed at the multiple water outlets to realize intelligent opening and closing of the water outlets. It also includes a generator motor and a water pump turbine. When water from the upper reservoir flows to the drying pool through the second water delivery system, the water pump turbine is driven and the generator motor is driven to generate electricity.

[0013] Preferably, the temperature monitoring module includes a first temperature sensor with waterproofness placed at water outlets of different depths of the upper reservoir and a second temperature sensor with waterproofness placed in the sun drying pool.

[0014] Preferably, the first electrically-controlled valve and the second electrically-controlled valve are arranged at the water outlets at different heights of the upper reservoir and are respectively connected to the second control processing module through a second power supply circuit and a second second power supply circuit; the second control processing module controls the opening and closing of the first electrically-controlled valve / the second electrically-controlled valve through a second power supply circuit / a second second power supply circuit after processing the signals received from multiple temperature sensors, thereby realizing the opening and closing of the corresponding first water outlet / the second water outlet and then realizing the starting and stopping of the water discharge work.

[0015] Preferably, the multiple first temperature sensors and the second temperature sensors are respectively connected to the second control processing module by wire. The second control processing module receives the temperature data measured by the multiple first temperature sensors and the second temperature sensors in real time, analyzes and compares the temperature measurement values ​​of the multiple first temperature sensors with the temperature measurement values ​​of the second temperature sensors. When the measurement value of any first temperature sensor is greater than the measurement value of the second temperature sensor, the second control processing module controls the electric control valve where the first temperature sensor is located to open, releases the water in the upper reservoir to the drying pool through the second water transfer system, generates electricity through the second pumped storage device, and transmits electric energy to the power grid.

[0016] Preferably, a immersive liquid level sensor is installed at the bottom of the drying pool and is electrically connected to the second control module. When the immersive liquid level sensor measures that the water level in the drying pool reaches 10%-20% and 80%-90% of the height of the drying pool, a first signal and a second signal are sent to the second control module respectively. After the second control module receives and processes the first signal, it controls the first electrically-controlled valve and / or the second electrically-controlled valve to be opened through its first second power supply circuit and / or its second second power supply circuit, and releases the water from the upper reservoir to the drying pool through the second water delivery system, and generates electricity through the second pumped-storage device; and after the second control module receives and processes the second signal, it controls the first electrically-controlled valve and the second electrically-controlled valve to be closed through its first second power supply circuit and its second second power supply circuit, and closes the connections between the multiple first temperature sensors, the second temperature sensors and the second control processing module.

[0017] Preferably, the upper ends of the drying pool and the upper reservoir are open to absorb sunlight and heat up during the day, and the drying pool can be used to irrigate farmland by pumping water through a water pump and selectively irrigate according to the temperature measurement value of a second temperature sensor, and the water temperature of the drying pool can be regulated by transporting water of different temperatures at different heights of the upper reservoir to the drying pool.

[0018] Compared with the prior art, the integrated energy storage irrigation system of a pumped storage power station and a sunbathing pool of the present invention has at least the following beneficial effects: 1. The pumped-storage power station controls the first pumped-storage device to automatically start pumping and storing water during the low-peak period of electricity consumption at night and automatically stop pumping and storing water during the peak period of daytime through the intelligent control device for realizing timed pumping. The low-peak electricity consumption at night can be stored in an optimized manner, and water can be released at a suitable time to generate electricity when connected to the power grid. The process is automatically operated and realized without human operation through the intelligent control of the intelligent control system for realizing timed pumping. The process has a high degree of intelligence and low labor cost. Compared with the traditional pumped-storage power station without intelligent control system, the energy storage power generation efficiency is higher and the long-term storage capacity improvement is better guaranteed.

[0019] 2. The pumped-storage power station can discharge water into the drying pool to generate electricity while discharging water into the lower reservoir to generate electricity. In this case, the water discharged into the drying pool can not only generate electricity, but also support the use of the drying pool, because the water in the drying pool and the water in the upper reservoir can also increase the water temperature by receiving sunlight. Therefore, the energy storage irrigation system integrating the entire pumped-storage power station and the drying pool is more practical and cost-effective, and at the same time adds another function of the pumped-storage power station.

[0020] 3. In addition, in the process of the pumped storage power station releasing water into the drying pool for power generation, through the intelligent control of the water transfer control system, the temperature of the drying pool can be automatically released into the drying pool through the water body with higher temperature in the upper reservoir. For example, when the temperature of the surface water body in the upper reservoir is higher, water is released into the drying pool to increase the temperature of the water body in the drying pool. The intelligent increase and regulation of the temperature of the drying pool can be achieved, which can effectively overcome the low water temperature of the drying pool and the cold water damage caused by water supply to farmland for irrigation. Further, under the water level monitoring of the immersion liquid level sensor, the water height of the drying pool is reasonably regulated, and water overflow and excessively low water level will not occur. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the pumped storage power station and the sun-drying pool integrated energy storage irrigation system provided in the embodiment of the present application; Figure 2 It is a schematic diagram of the overall structure of a pumped storage power station provided in an embodiment of the present application; Figure 3It is a schematic diagram of the overall structure of the second pumped storage device and the water delivery control system provided in an embodiment of the present application.

[0022] Icons: 11. First pumped storage device; 111. Pump turbine of first pumped storage device; 112. Generator motor of first pumped storage device; 12. Intelligent control device; 13. First machine room; 14. Upper reservoir; 15. First water delivery system; 16. Lower reservoir; 121. First control processing module; 1211. PLC controller of first control processing module; 1212. Timer of first control processing module; 122. Electromagnetic relay; 123. First power supply circuit; 21. Second pumped storage device; 211. Second water delivery system; 212 , the generator motor of the second pumped-storage device; 213, the pump turbine of the second pumped-storage device; 22, the water supply control system; 221, the second control processing module; 2211, the PLC controller of the second control module; 222, the temperature monitoring module; 2221, the first temperature sensor; 2222, the second temperature sensor; 223, the first second power supply circuit; 224, the second second power supply circuit; 225, the first electric-controlled valve; 226: the second electric-controlled valve; 23, the second machine room; 24, the drying pool; 25, the immersion liquid level sensor; 30, the farmland. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0026] In the description of the embodiments of the present invention, "multiple" means at least 2, and "several" means 1 or more.

[0027] In the description of the present invention, it should be noted that the terms "upper", "lower", "bottom", "inside", "outside", "front end", "rear end", "two ends", "left side", "right side" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and can also be understood and judged in conjunction with the description in the specification. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention; in addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Example 1

[0029] Figure 1 It is a schematic diagram of the overall structure of the pumped storage power station and the sun-drying pool integrated energy storage irrigation system provided in the embodiment of the present application; Figure 2 is a schematic diagram of the overall structure of the pumped storage power station provided in the embodiment of the present application; Figure 1 , Figure 2 .

[0030] A pumped storage power station and a sun-drying pool integrated energy storage irrigation system, the pumped storage power station comprises a lower reservoir 16, an upper reservoir 14, a first water delivery system 15 therebetween, and a first pumped storage device 11, wherein the first water delivery system 15 connects the upper reservoir 14 and the lower reservoir 16 to realize pumped storage and water discharge for power generation; The first pumped storage device 11 also includes a pump turbine 111, a generator motor 112, and an intelligent control device 12 electrically connected to the pumped storage device for realizing timed pumping of the first pumped storage device 11. The pumped storage device is connected to the power grid via a transmission line, and realizes the balance of supply and demand of the power grid by the pumped storage power station by pumping water for storage during low-peak power consumption and converting the gravitational potential energy of the water body into electrical energy by discharging water to generate electricity during peak power consumption and outputting it to the power grid.

[0031] Preferably, the intelligent control device 12 includes a first control processing module 121, a first power supply circuit 123 connected to the first control processing module 121, and an electromagnetic relay 122 installed in the first power supply circuit 123 and connected to the first control processing module 121; the first control processing module 121 is equipped with a PLC controller 1211 with logic processing capabilities.

[0032] Preferably, the intelligent control device 12 is arranged beside the dam of the upper reservoir 14 and is separated from the water body in the upper reservoir 14 to achieve its waterproof effect. Its waterproofness and safety can also be improved by being arranged in the constructed first machine room 13. The first power supply circuit uses waterproof cables and provides protective casings for the cables to reasonably fix and enhance their waterproofness and safety. In addition, the electromagnetic relay 122 is arranged in a place isolated from the water body, such as in the first machine room 13, thereby finally achieving the overall waterproofness and safety of the intelligent control device 12.

[0033] Preferably, the first control processing module 121 of the intelligent control device 12 is provided with a timer 1212 with a clock function. The timer 1212 presets two timing functions. The first control processing module 121 triggers the control functions at the preset timing moments, that is, it also controls the closing and opening of the electromagnetic relay 122, and then realizes the connection and disconnection of the first power supply circuit 123, and then controls the first pumped storage device 11 to start and stop working.

[0034] Preferably, the timer 1212 sets the first timing moment in the interval of 22:30-23:30, and the first control processing module 121 triggers the control function of closing the electromagnetic relay 122 at the first timing moment, and sets the second timing moment in the interval of 5:30-6:30, and the first control processing module 121 triggers the control function of opening the electromagnetic relay 122 at the second timing moment, so that the pumped storage device works in the time period from the first timing moment to the second timing moment to realize pumped storage during the low peak period of electricity consumption at night, wherein the first timing moment and the second timing moment set by the timer 1212 can be set / adjusted according to the season and actual conditions.

[0035] Preferably, when the first pumped storage device 11 is powered on and working during the low-peak electricity consumption at night, the generator motor 112 is controlled to work as a motor, and drives the pump turbine 111 to work as a water pump to pump water from the lower reservoir 16 to the upper reservoir 14 through the first water transfer system 15, thereby converting the low-peak electricity at night into the gravitational potential energy of water for storage.

[0036] Preferably, in the first pumped-storage device 11, the generator motor 112 is a bidirectional reversible generator motor 112, and the pump-turbine 111 is a reversible pump-turbine 111, so that when the upper reservoir 14 releases water to the lower reservoir 16 through the first water transfer system 15, the reversible pump-turbine 111 is driven and operates as a turbine, and drives the generator motor 112 to operate as a generator, so that the first pumped-storage device 11 generates electricity and transmits electric energy to the power grid. The first pumped-storage device 11 is electrically connected to the power grid, and the power grid dispatching center issues a water generation instruction according to the power grid supply and demand situation, so that the first pumped-storage device 11 performs a water discharge and power generation process during a peak power consumption period, such as 17:00-22:30 / 23:30. In the present application, the power grid dispatching center issues a water discharge and power generation instruction within the time interval of the peak power consumption period and enables the first pumped-storage device 11 to generate electricity. This is a known technology and will not be repeated here.

[0037] Preferably, the first water delivery system 15 of the first pumped-storage device 11 further comprises a water inlet valve and a water outlet valve, which are opened respectively when the pumped-storage operation starts and the water discharge and power generation operation starts.

[0038] Preferably, the first pumped-storage device 11 is connected to an on / off switch provided with a power supply state, so as to manually switch the working state of the entire pumped-storage device. Example 2

[0039] Figure 1 It is a schematic diagram of the overall structure of the pumped storage power station and the sun-drying pool integrated energy storage irrigation system provided in the embodiment of the present application; Figure 3 is a schematic diagram of the overall structure of the second pumped storage device and the water delivery control system provided in the embodiment of the present application; Figure 1 , Figure 3 .

[0040] An integrated energy storage irrigation system of a pumped storage power station and a sun-drying pool, wherein the sun-drying pool 24 is placed at the side of the upper reservoir 14 of the pumped storage power station, such as at the side of the lower part, and there is farmland 30 at the side of the sun-drying pool 24, and water is supplied to the farmland 30 in a suitable manner, such as using a pump to pump water for irrigation and a valve to divert water for irrigation; A second pumped-storage device 21 capable of discharging water to generate electricity is provided between the upper reservoir 14 and the sun-drying pool 24 and is connected to the power grid via a transmission line. The upper reservoir 14 is higher than the sun-drying pool 24, and when discharging water, the second pumped-storage device 21 generates electricity and transmits the generated electricity to the power grid. In addition, a water supply control system 22 electrically connected to the second pumped-storage device 21 automatically controls the upper reservoir 14 to intelligently supply water to the sun-drying pool 24 according to temperature and / or liquid level.

[0041] Preferably, the water delivery control system 22 includes a temperature monitoring module 222, a second control processing module 221, a plurality of second power supply circuits, and a plurality of electrically controlled valves; the second control processing module 221 is internally provided with a PLC controller.

[0042] It is worth noting that the second control processing module 221 is placed outside the water body, such as next to the dam of the upper reservoir 14. Preferably, a second machine room 23 is built and installed therein to enhance the waterproof and anti-damage effects; then, the multiple second power supply circuits use waterproof cables and provide protective casings for the cables to enhance their waterproofness and safety; then, multiple electrically controlled valves use waterproof valves with high waterproof sealing properties, ultimately achieving the overall waterproofness and safety of the water supply control system 22.

[0043] Preferably, the second pumped-storage device 21 includes a second water delivery system 211, and the second water delivery system 211 is provided with water outlets at different heights of the upper reservoir 14 to deliver water at different water levels of the upper reservoir 14, and to adjust / select the water level of the sun drying pool 24 according to different water level temperatures. Multiple electric control valves are installed at multiple water outlets to realize intelligent opening and closing of the water outlets. It also includes a pump turbine 213 and a generator motor 212. When the water from the upper reservoir 14 flows into the sun drying pool 24 through the second water delivery system 211, the pump turbine 213 is driven and the generator motor 212 is driven to generate electricity. Preferably, the second water delivery system 211 is connected to multiple different water outlets at the upper reservoir 14, connected to the sun drying pool 24, and a second pumped-storage device 21 is installed at the lower end to generate electricity uniformly when the second water delivery system 211 delivers water.

[0044] Preferably, the temperature monitoring module 222 includes a plurality of first waterproof temperature sensors 2221 placed at outlets of different depths of the upper reservoir 14 to monitor the water temperature at different water levels of the upper reservoir 14 , and a second waterproof temperature sensor 2222 placed in the sun drying pool 24 .

[0045] Preferably, the first electrically-controlled valve 225 and the second electrically-controlled valve 226 are arranged at the water outlets at different heights of the upper reservoir 14 and are connected to the second control processing module 221 through a second power supply circuit 223 and a second second power supply circuit 224, respectively. The second control processing module 221 processes the signals received from multiple temperature sensors and realizes the opening and closing of the first electrically-controlled valve 225 / the second electrically-controlled valve 226 through a second power supply circuit 223 / a second second power supply circuit 224, and then realizes the opening and closing of the corresponding first water outlet / second water outlet, and then realizes the start and stop of the water discharge work. The second control processing module 221 is equipped with a PLC controller 2211 with logic processing capabilities.

[0046] Preferably, the multiple first temperature sensors 2221 and the second temperature sensors 2222 are respectively connected to the second control processing module 221 by wire, and the transmission line is waterproof. The second control processing module 221 receives the temperature data measured by the multiple first temperature sensors 2221 and the second temperature sensors 2222 in real time, analyzes and compares the temperature measurement values ​​of the multiple first temperature sensors 2221 with the temperature measurement values ​​of the second temperature sensor 2222. When the measurement value of any first temperature sensor 2221 is greater than the measurement value of the second temperature sensor 2222, the second control processing module 221 controls the electric control valve where the first temperature sensor 2221 is located to open, and the water of the upper reservoir 14 is released to the drying pool 24 through the second water delivery system 211, and generates electricity through the second pumped storage device 21. When the water is released under the condition of realizing intelligent water delivery and regulation of the water temperature of the drying pool 24, the second pumped storage device 21 generates electricity and transmits electric energy to the power grid.

[0047] The sun drying pool 24 is provided with an immersion level sensor 25 at the bottom thereof and is electrically connected to the second control module 221. When the immersion level sensor 25 measures that the water level of the sun drying pool 24 reaches 10%-20% and 80%-90% of the height of the sun drying pool 24, the first signal and the second signal are respectively sent to the second control module 221. After the second control module 221 receives and processes the first signal, the first electric control valve 225 and / or the second electric control valve 226 are controlled to be opened through the first second power supply circuit 223 and / or the second second power supply circuit 224, so that the water of the upper reservoir 14 is discharged to the sun drying pool 24 through the second water delivery system 211, and the second pumped storage device 21 generates electricity and transmits electric energy to the power grid; and in the second control module 221 After receiving and processing the second signal, the first electrically controlled valve 225 and the second electrically controlled valve 226 are controlled to be closed through the first second power supply circuit 223 and the second second power supply circuit 224, and the connections between the plurality of first temperature sensors (2221) and the second temperature sensors (2222) and the second control processing module (221) are closed; wherein the connection between the plurality of first temperature sensors (2221) and the second temperature sensors (2222) and the second control processing module (221) is an electromagnetic relay provided in the connection circuit, and when the connection between the second control processing module (221) and the temperature sensor is closed, the connection circuit is disconnected by opening the electromagnetic relay, thereby closing the connection between the temperature monitoring module (222) and the second control processing module (221).

[0048] The sun-drying pool 24 and the upper reservoir 14 are open at the top to absorb sunlight and heat up during the day. The sun-drying pool 24 can be used to irrigate the farmland 30 through water pumping / valve diversion, and can be used for selective watering based on the temperature measurement value of the second temperature sensor 2222. Water temperature of the sun-drying pool 24 can be adjusted by transporting water from different temperatures at different heights of the upper reservoir 14 to the sun-drying pool 24.

[0049] The construction height of the sun-drying pool 24 is lower than that of the upper reservoir 14, and a dark-colored bottom that absorbs sunlight more easily is provided at the bottom of the sun-drying pool 24 to increase the water temperature more quickly. The dark-colored bottom may be a rubber / plastic waterproof membrane.

[0050] Preferably, the water control system 22 is provided with an on / off switch to close the water control system 22 when the sun drying pool 24 is full of water.

[0051] Working principle: 1. A pumped storage power station is provided with a timer 1212 in the first control processing module 121 of the intelligent control system, which controls the start and end of pumping of the pumped storage device at the first timing and the second timing respectively, so as to realize the conversion of excess electric energy into mechanical energy of the water body and store it during the low-peak period of electricity consumption at night between the two timing times. During the peak period of electricity consumption, water is released to the lower reservoir 16 for power generation / water is released to the sun-drying pool 24 for power generation to realize electric energy conversion and transmit it to the power grid, thereby realizing peak-shaving and valley-filling of electricity, achieving energy conservation and emission reduction, and further realizing water storage and irrigation of the water body in the sun-drying pool 24.

[0052] 2. The sun-drying pool 24 cooperates with the second water delivery system 211 to release water of different water levels and temperatures in the upper reservoir 14 to the sun-drying pool 24 through the second pumped storage device 21 and generate electricity, thereby replenishing the water in the sun-drying pool 24 and transmitting the electricity to the power grid. Through the operation of the water delivery control system 22, the higher water in the upper reservoir 14 is automatically and intelligently input into the sun-drying pool 24 to replenish the water, and at the same time, the temperature of the water in the sun-drying pool 24 is intelligently regulated and increased, so as to facilitate the irrigation of field crops with water of suitable water temperature and prevent the problem of cold water damage. In terms of water temperature regulation, the water in the sun-drying pool 24 receives sunlight to increase the temperature, and the higher temperature water in the upper reservoir 14 is intelligently delivered to the sun-drying pool 24 to further optimize the sun-drying process. The regulation of the water temperature in the water pool 24 is automatic and has good temperature controllability. The monitoring values ​​of multiple first temperature sensors 2221 and second temperature sensors 2222 are received, analyzed and controlled by the second control processing module 221 to open and close the subsequent electric control valves and release water for power generation, which has good effect and high practical value. When the water level in the sun-drying pool 24 is monitored by the immersion liquid level sensor 25 to be 10%-20%, the water in the upper reservoir 14 is controlled to release water to the sun-drying pool 24 for power generation. When the water level in the sun-drying pool 24 is monitored by the immersion liquid level sensor 25 to be 80%-90%, the water in the upper reservoir 14 is stopped from continuing to release water into the sun-drying pool 24 by disconnecting the temperature monitoring module 222 and the second control processing module 221, so as to intelligently and reasonably control the water level of the sun-drying pool.

[0053] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pumped storage power station and sun-drying pool integrated energy storage irrigation system, characterized in that: The pumped storage power station comprises a lower reservoir (16), an upper reservoir (14), a first water transfer system therebetween, and a first pumped storage device (11); The first pumped storage device (11) further comprises a water pump turbine (111), a generator motor (112), and an intelligent control device (12) electrically connected to the pumped storage device and used to realize the timed pumping of water by the first pumped storage device (11); the pumped storage device is connected to the power grid via a power transmission line; The water drying pool (24) is placed at a lateral position of the upper reservoir (14) of the pumped storage power station, such as at a lateral lower position; A second pumped storage device (21) capable of discharging water to generate electricity is provided between the upper reservoir (14) and the sun drying pool (24) and is connected to a power grid via a power transmission line. A water transfer control system (22) electrically connected to the second pumped storage device (21) automatically controls the upper reservoir (14) to transfer water to the sun drying pool (24) according to temperature and / or liquid level.

2. The integrated energy storage irrigation system of a pumped storage power station and a sun-drying pool according to claim 1 is characterized in that: The intelligent control device (12) comprises a first control processing module (121), a first power supply circuit (123) connected to the first control processing module (121), and an electromagnetic relay (122) installed in the first power supply circuit (123) and connected to the first control processing module (121); the first control processing module (121) is provided with a PLC controller (1211).

3. The integrated energy storage irrigation system of a pumped storage power station and a sun-drying pool according to claim 2 is characterized in that: The first control processing module (121) of the intelligent control device (12) is provided with a timer (1212) having a clock function. The timer (1212) is preset with two timing functions. The first control processing module (121) triggers the control functions at the preset timing moments, that is, it also controls the closing and opening of the electromagnetic relay (122) and realizes the connection and disconnection of the first power supply circuit (123), thereby controlling the first pumped storage device (11) to start and stop working.

4. The integrated energy storage irrigation system of a pumped storage power station and a sun-drying pool according to claim 3 is characterized in that: The timer (1212) sets the first timing moment in the interval between 22:30 and 23:30, and the first control processing module (121) triggers the control function of closing the electromagnetic relay (122) at the first timing moment, and sets the second timing moment in the interval between 5:30 and 6:30, and the first control processing module (121) triggers the control function of opening the electromagnetic relay (122) at the second timing moment, so that the pumped storage device operates in the time period between the first timing moment and the second timing moment to realize pumped storage during the low-peak period of nighttime electricity consumption.

5. The integrated energy storage irrigation system of a pumped storage power station and a sun-drying pond according to claim 4 is characterized in that: When the first pumped storage device (11) is powered on during the low-peak period of nighttime electricity consumption, the generator motor (112) is controlled to operate as a motor, and the pump turbine (111) is driven to operate as a water pump to pump water from the lower reservoir (16) to the upper reservoir (14) through the first water transfer system, thereby converting the low-peak electricity at night into the gravitational potential energy of water for storage.

6. The integrated energy storage irrigation system of a pumped storage power station and a sun-drying pond according to claim 5 is characterized in that: In the first pumped storage device (11), the generator motor (112) is a bidirectional reversible generator motor (112), and the pump turbine (111) is a reversible pump turbine (111), so that when the upper reservoir (14) releases water to the lower reservoir (16) through the first water transfer system, the reversible pump turbine (111) is driven to operate as a turbine, and the generator motor (112) is driven to operate as a generator, so that the first pumped storage device (11) generates electricity and transmits electric energy to the power grid system.

7. The integrated energy storage irrigation system of a pumped storage power station and a sun-drying pond according to claim 1 is characterized in that: The water delivery control system (22) comprises a temperature monitoring module (222), a second control processing module (221), a plurality of second power supply circuits, and a plurality of electrically controlled valves; the second control processing module (221) is provided with a PLC controller (2211).

8. The integrated energy storage irrigation system of a pumped storage power station and a sun-drying pond according to claim 7 is characterized in that: The second pumped storage device (21) comprises a second water delivery system (211), wherein the second water delivery system (211) is provided with water outlets at different heights of the upper reservoir (14), wherein a plurality of electrically controlled valves are provided at the plurality of water outlets to realize intelligent opening and closing of the water outlets, and further comprises a generator motor (212) and a water pump turbine (213), wherein when water from the upper reservoir (14) flows to the sun drying pool (24) through the second water delivery system (211), the water pump turbine (213) is driven and the generator motor (212) is driven to generate electricity (24).

9. The integrated energy storage irrigation system of a pumped storage power station and a sun-drying pond according to claim 8, characterized in that: The temperature monitoring module (222) comprises a first temperature sensor (2221) with waterproof properties placed at water outlets of different depths of the upper reservoir (14), and a second temperature sensor (2222) with waterproof properties placed in the sunbathing pool (24).

10. The integrated energy storage irrigation system of a pumped storage power station and a sun-drying pond according to claim 9, characterized in that: The first electrically controlled valve (225) and the second electrically controlled valve (226) are arranged at water outlets at different heights of the upper reservoir (14) and are connected to the second control processing module (221) through a first second power supply circuit (223) and a second second power supply circuit (224), respectively. The second control processing module (221) controls the opening and closing of the first electrically controlled valve (225) / the second electrically controlled valve (226) through a first second power supply circuit (223) / a second second power supply circuit (224) after processing signals received from a plurality of temperature sensors, thereby realizing the opening and closing of the corresponding first water outlet / the second water outlet, and then realizing the start and stop of the water discharge operation.

11. The integrated energy storage irrigation system of a pumped storage power station and a sun-drying pond according to claim 10, characterized in that: The plurality of first temperature sensors (2221) and the second temperature sensors (2222) are respectively connected to the second control processing module (221) by wire. The second control processing module (221) receives temperature data measured by the plurality of first temperature sensors (2221) and the second temperature sensors (2222) in real time, analyzes and compares the temperature measurement values ​​of the plurality of first temperature sensors (2221) and the temperature measurement values ​​of the second temperature sensors (2222). When the measurement value of any first temperature sensor (2221) is greater than the measurement value of the second temperature sensor (2222), the second control processing module (221) controls the electric control valve where the first temperature sensor (2221) is located to open, and discharges the water of the upper reservoir (14) into the sunbathing pool (24) through the second water delivery system (211), and generates electricity through the second pumped storage device (21) and transmits electric energy to the power grid.

12. The integrated energy storage irrigation system of a pumped storage power station and a sun-drying pond according to claim 11, characterized in that: The sun drying pool (24) is provided with an immersion type liquid level sensor (25) at the bottom thereof and is electrically connected to the second control module (221). When the immersion type liquid level sensor (25) measures that the water level of the sun drying pool (24) reaches 10%-20% and 80%-90% of the height of the sun drying pool (24), a first signal and a second signal are respectively sent to the second control module (221). After the second control module (221) receives and processes the first signal, it controls the first electric control valve (225) and / or the second electric control valve (226) to open through its first second power supply circuit (223) and / or its second second power supply circuit (224), so that the water of the upper reservoir (14) is discharged to the sun drying pool (24) through the second water delivery system (211), and generates electricity through the second pumped storage device (21); After the second control module (221) receives and processes the second signal, it controls the first electrically controlled valve (225) and the second electrically controlled valve (226) to be closed through its first second power supply circuit (223) and its second second power supply circuit (224), and closes the connection between the plurality of first temperature sensors (2221), the second temperature sensor (2222) and the second control processing module (221).

13. A pumped storage power station and sun-drying pool integrated energy storage irrigation system according to any one of claims 1 to 12, characterized in that: The sun-drying pool (24) and the upper reservoir (14) are open at the top to absorb sunlight and heat up during the day, and the sun-drying pool (24) can be used to irrigate the farmland (30) by pumping water through a water pump, and can be used for selective watering based on the temperature measured by the second temperature sensor (2222), and water can be transported to the sun-drying pool (24) by water bodies of different temperatures at different heights of the upper reservoir (14) to adjust the water temperature of the sun-drying pool (24).

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