A nighttime pumping, artificial water head, and reservoir capacity energy storage power station
By designing night pumping, artificial heads, and storage capacity energy storage power stations in water systems with tidal conditions, and using tidal and pumping pumps for power storage and release, the problems of high electricity storage costs and land occupation in the existing technology have been solved, and low Cost, low-ground power storage and stable power generation benefits.
Patent Information
- Application Number
- CN201910474097.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2019-06-02
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2039-06-02
AI Technical Summary
The existing pumped energy storage power stations are difficult to effectively store excess electricity at night due to high construction costs, occupying a lot of land and poor economic benefits, resulting in waste of electricity.
A night-time pumping, artificial water head, and storage capacity energy storage power station was designed, using artificial water head power dam body, pumping dam body and water storage energy storage power dam body, and through tidal power station and pumping station, it was set up in a water system with tidal conditions. At the end, tides and pumps are used to store and release electricity, avoiding the construction of tall dams and using existing water bodies to achieve land conservation.
It realizes low-cost and low-ground storage and release of electricity, reduces electricity waste, provides stable power generation benefits, utilizes excess half-price electricity, reduces pollution, and improves the utilization rate of electricity.
Smart Images
Figure CN110259626B_ABST
Abstract
Description
Technical Field
[0001] The present application relates to a nighttime pumping, artificial water head, and reservoir capacity energy storage power station. Background Art
[0002] Due to the reduction of human activities at night, a large amount of generated electricity cannot be used. People have thought of many ways to store the electricity that cannot be used at night, but they still cannot store the excess electricity at night, resulting in great waste. Pumped storage power stations are a way to store electricity, but are affected by construction costs and the occupation of a large amount of land, and their economic and social benefits are not high. Summary of the invention
[0003] In view of the above shortcomings, a nighttime pumping, artificial water head and reservoir capacity energy storage power station is now provided.
[0004] A nighttime pumping, artificial water head, reservoir capacity energy storage power station comprises an artificial water head power generation dam body, an artificial water head pumping dam body, and a water storage energy storage power generation dam body, characterized in that: the artificial water head power generation dam body is provided with a tidal power station and a water level regulating gate; the artificial water head pumping dam body is provided with a pumping station and a water level regulating gate, and the water storage energy storage power generation dam body is provided with a tidal power station and a water level regulating gate, the artificial water head power generation dam body and the water storage energy storage power generation dam body are arranged at both ends of a through water system with tidal conditions, an artificial water head pumping dam body is arranged in the middle, the water area between the artificial water head power generation dam body and the artificial water head pumping dam body is a reservoir capacity energy storage reservoir, the water area between the artificial water head pumping dam body and the water storage energy storage power generation dam body is a water storage energy storage reservoir, the artificial water head power generation dam body is slightly higher than the maximum tide level of the tide, the artificial water head pumping dam body is the same height as the water storage energy storage power generation dam body, and is higher than the artificial water head power generation dam body.
[0005] Furthermore, during the electricity consumption valley period at night, excess half-price electricity is used to turn on the pump in the artificial water head pumping dam to pump water from the storage capacity energy storage reservoir to the water storage reservoir. The first artificial water head is used to empty the storage capacity energy storage reservoir to store energy. The second artificial water head is used to store water in the water storage reservoir. During high tide outside the electricity consumption valley period during the day, the tidal power station in the artificial water head generator dam is turned on to generate electricity and store water for the storage capacity energy storage reservoir. During low tide outside the electricity consumption valley period, the tidal power station in the water storage energy storage dam is turned on to generate electricity and empty the water storage energy storage reservoir.
[0006] Furthermore, the artificial water head power generation dam body is arranged near the water intake of the water source, and forms a closed empty storage reservoir with the dam body around the water intake. The height of the artificial water head power generation dam is slightly higher than the highest water storage level of the water source. The gate of the power station is closed during the peak and off-peak periods of electricity use, and the water in the storage capacity energy storage reservoir is taken away from the water intake to vacate the storage capacity for energy storage. During the peak period of electricity use, the tidal generator is opened to generate electricity and store water for the storage capacity energy storage reservoir. BRIEF DESCRIPTION OF THE DRAWINGS
[0007] Figure 1 A plan view of a nighttime pumping, artificial head, reservoir capacity energy storage power station located in a water system with tidal conditions.
[0008] Figure 2 A plan view of a nighttime pumping, artificial head reservoir capacity energy storage power station located near a water source intake.
[0009] Advantages of a nighttime pumping, artificial water head, and reservoir capacity energy storage power station
[0010] 1. There is no need to build tall dams, which requires less investment and saves money.
[0011] 2. Utilize existing water bodies to avoid flooding large amounts of land, thus saving land.
[0012] 3. Tides occur every day, there is no dry season, and the power generation efficiency is good.
[0013] 4. During off-peak hours, use excess half-price electricity to pump water to empty reservoir capacity for energy storage, store water and energy, and generate full-price electricity during the day, which has good economic benefits.
[0014] 5. Utilize excess half-price electricity to reduce waste. Hydropower generation is pollution-free, energy-saving and environmentally friendly.
[0015] 6. Use less electricity and pump less water at one time, artificial water head and tidal linkage, use more water twice and generate more electricity. Specific implementation plan
[0016] like Figure 1 , Figure 2 The power station shown is a nighttime pumping, artificial water head, and reservoir capacity energy storage power station, comprising 1. an artificial water head power generation dam, 2. an artificial water head pumping dam, 3. a water storage energy storage power generation dam, 4. sea and river banks, 5. an unnamed island, 6. a tidal power station, 7. a water level regulating gate, 8. a water pump, 9. a water intake pipeline, 10. a water source bank, 11. a reservoir capacity energy storage reservoir, and 12. a water storage energy storage reservoir.
[0017] The artificial water head power generation dam body 1 is provided with a tidal power station 6a and a water level regulating gate 7a, the artificial water head pumping dam body 2 is provided with a pumping station 8 and a water level regulating gate 7b, and the water storage and energy storage power generation dam body 3 is provided with a tidal power station 6b and a water level regulating gate 7c. The height of the artificial water head power generation dam body 1 is slightly higher than the highest tidal level or the highest water storage level in the water source, and the artificial water head pumping dam body 2 is the same height as the water storage and energy storage power generation dam body 3 and is higher than the artificial water head power generation dam body 1. Example 1
[0018] like Figure 1As shown, a nighttime pumping, artificial water head, reservoir capacity energy storage power station is characterized in that: an artificial water head power generation dam body 1, a water storage energy storage dam body 3 is arranged at both ends of a water system with tidal conditions between an unnamed island 5 and a sea and river bank 4, an artificial water head pumping dam body 2 is arranged in the middle, the area between the artificial water head power generation dam body 1 and the artificial water head pumping dam body 2 is a reservoir capacity energy storage reservoir 11, and the area between the artificial water head pumping dam body 2 and the water storage energy power generation dam body 3 is a water storage energy storage reservoir 12.
[0019] Now, assuming that the area of storage reservoir 11 is 5 million square meters, the area of water storage reservoir 12 is 5 million square meters, the tide level is 3 meters, and the water in the two reservoirs is often at the normal water level, which is set to 0 meters, the process of nighttime pumping and energy storage, artificial water head, tidal linkage, and daytime power generation is explained in detail.
[0020] During the peak period of electricity consumption, the tide is high, and the tide is 3 meters high. At the same time, the power station gate in the artificial water head power generation dam body 1 and the water level regulating gate 7c in the water storage power generation dam body 3 are opened to respectively supply water to the storage capacity energy storage reservoir 11 and the water storage energy storage reservoir. At the same time, the generator in the artificial water head power generation dam body is generating electricity. The tidal power station requires a power generation head of more than 1 meter. When the highest tide level is about 1 meter higher than the water level in the storage capacity energy storage reservoir 11, the water level regulating gate 7a in the artificial water head dam body 1 is opened to quickly supply water to the reservoir. When the tide process is over, the power station gate and the water level regulating gate are closed, and the water levels of the storage capacity energy storage reservoir 11 and the water storage energy storage reservoir 12 are both 3 meters higher than the normal water level. When the tide recedes during the peak electricity consumption period, the water level regulating gate 7b in the artificial water head pumping dam body 2 and the power station gate in the water storage and energy storage power generation dam body 3 are opened, the generator generates electricity, and the water level in the reservoir drops to about 1 meter above the normal water level. The water level regulating gate 7b in the artificial water head pumping dam body 2 and the generator gate are closed, and the water level in the energy storage power station reservoir is 1 meter higher than the normal water level.
[0021] During the electricity consumption valley period, the pump in the artificial water head pumping dam body 2 is turned on, and 30 million cubic meters of water are pumped from the storage capacity energy storage reservoir 11 to the water storage energy storage reservoir 12 with excess half-price electricity. The water level of the storage capacity energy storage reservoir 11 drops to 5 meters below the normal water level. Compared with the tidal height of 3 meters, there is an 8-meter drop, which is also the power generation head. This is the first artificial head obtained by pumping water to empty the storage capacity. At this time, in the storage capacity energy storage reservoir, when the tide height is 3 meters, there is a head of 1-8 meters, and the effective power generation capacity is 35 million cubic meters of energy storage capacity. At the same time, there is 30 million cubic meters of water storage energy storage in the water storage energy storage reservoir 12, with a water level 7 meters higher than the normal water level, that is, the maximum power generation head is 7 meters, which is the second head obtained by pumping water for water storage.
[0022] During high tide outside the electricity consumption valley period, the gate 6a of the tidal power station in the artificial head power generation dam body 1 is opened, and the generator is driven by the water energy of the power generation head 1-8 meters and the effective storage capacity of 35 million cubic meters to generate scarce full-price electricity. When the highest tidal level is 1 meter higher than the water level in the reservoir, the water level regulating gate 7a is opened to ensure that the water level in the reservoir is level with the tide level after high tide power generation, which is 3 meters higher than the normal water level, and the generator gate and water level regulating gate are closed.
[0023] During low tide outside the electricity consumption valley period, the gate of the tidal power station 6b in the water storage and energy storage power generation dam body 3 is opened, and the generator generates electricity. When the water level in the reservoir drops to 3 meters above the normal water level, it is level with the water level in the storage capacity energy storage reservoir 11, and the water level regulating gate 7b in the artificial head pumping dam body is opened. When the water level in the reservoir drops to 1 meter above the normal water level, the generator gate and the water level regulating gate 7b are closed. The water level of the reservoir in the energy storage power station is 1 meter higher than the normal water level. Wait until the electricity consumption valley period, and then use the excess half-price electricity to pump water, vacate the storage capacity for energy storage, store water and energy, and generate electricity outside the electricity consumption valley period, completing the nighttime pumping and energy storage, and the daytime tidal linkage power generation process. During the low tide power generation process, the reservoir in the energy storage power station provides a total of 20 million cubic meters of water storage and energy storage with a head of 3-7 meters and 20 million cubic meters of water storage and energy storage with a head of 1-3 meters.
[0024] During the whole process of nighttime pumping, artificial water head, reservoir capacity energy storage, tidal linkage and daytime power generation, during the valley period, 30 million cubic meters of water are pumped from the reservoir capacity energy storage reservoir 11 to the water storage energy storage reservoir 12 with excess half-price electricity. Through two artificial water heads and tidal linkage, we obtain 1-8 meter head outside the valley period, 35 million cubic meters of reservoir capacity energy storage, 20 million cubic meters of water storage energy at 3-6 meter head and 20 million cubic meters of water storage energy at 1-3 meter head, a total of 75 million cubic meters of effective power generation water energy at 1-8 meter head, and the urgently needed full-price electricity. The effect is obvious.
[0025] Before pumping, when the tide rises during the pumping process and the tide is higher than the water level in the water storage and energy storage reservoir 12, open the water level regulating gate 7c in the water storage and energy storage power generation dam body 3 to allow the tide to enter the reservoir and obtain more stored water. When the same amount of water is pumped, the water head in the water storage and energy storage reservoir is higher, more water can be stored, and more electricity can be generated. Example 2
[0026] like Figure 2 As shown, a nighttime pumping, artificial water head, reservoir capacity energy storage power station is characterized in that: unlike Example 1, the artificial water head power generation dam body 1 is arranged near the water source water intake pipeline 9 and the water source embankment 10 around the water intake pipeline 9 forms a closed water body reservoir capacity energy storage reservoir 11, and the artificial water head power generation dam body 1 is slightly higher than the highest water storage level of the water source.
[0027] like Figure 2As shown, the storage capacity of the energy storage reservoir 11 formed by the artificial head power generation dam body 1 and the water source embankment 10 around the water intake pipeline 9 is 1.2 million cubic meters. The water intake pipeline 9 is set 10 meters below the normal water level of the water source. The daily water intake is 12 million cubic meters, the hourly water intake is 500,000 cubic meters, and the power generation time is the peak period of electricity consumption from 8 am to 4 pm. At 8 o'clock in the morning, the water level in the storage reservoir 11 was equal to the water level in the water source. The gates of the tidal generator 6 and the water level regulating gate 7 were closed. The storage reservoir 11 was an independent and closed water source. The water intake was taking water at a flow rate of 500,000 cubic meters per hour. At 8 o'clock the next morning, 12 million cubic meters of water were pumped out, and the water level of the storage reservoir 11 dropped by 10 meters, but it did not affect the normal water intake of the water intake 9. The water level inside and outside the storage reservoir 11 differed by 10 meters. This was the 10-meter artificial head obtained by the water intake pipeline 9 extracting water from the storage reservoir 11 and freeing up the storage capacity. The generator gate was opened, and the generator generated electricity at a flow rate of 1.5 million cubic meters per hour to meet the large flow requirements of tidal power generation. By 4 o'clock in the afternoon, the water level in the reservoir rose by nearly 7 meters, and 8 million cubic meters of water were added to the reservoir. The generator gate was closed, and the water intake pipeline still took water at a flow rate of 500,000 cubic meters per hour. By 8 o'clock the next day, the water level in the reservoir dropped to 10 meters below the normal level. The generator gate was opened again, and the generator generated electricity. The cycle was repeated, and the water was blocked by the artificial water head 1 of the generator dam body, and then water was taken from the water intake to vacate the storage capacity of the energy storage reservoir 11. There was a head of 3-10 meters every day. The 12 million cubic meters of storage capacity can generate more than 200,000 kWh of clean, environmentally friendly and urgently needed full-price electricity between 8 am and 4 pm.
[0028] The composition of the water intake pipeline 9 and the surrounding water source embankment 10 is equivalent to an artificial water head pumping dam body, which has the functions of pumping water, vacating storage capacity and artificial water head.
[0029] When the water level regulating gate cannot operate normally due to maintenance of the generator, the water level regulating gate 7 is opened to ensure normal water supply.
[0030] Although the specific embodiments of the present invention are described and illustrated in detail above, it should be pointed out that various equivalent changes and modifications can be made to the above embodiments based on the concept of the present invention. As long as the functional effects produced do not exceed the spirit covered by the specification, they should all be within the scope of protection of the present invention.
Claims
1. A control method for a nighttime pumping, artificial water head, and reservoir capacity energy storage power station, the power station comprising an artificial water head power generation dam, an artificial water head pumping dam, and a water storage energy storage power generation dam, characterized in that: The artificial water head power generation dam body is provided with a tidal power station and a water level regulating gate; the artificial water head pumping dam body is provided with a pumping station and a water level regulating gate, and the water storage and energy storage power generation dam body is provided with a tidal power station and a water level regulating gate. The artificial water head power generation dam body and the water storage and energy storage power generation dam body are arranged at both ends of a through water system with tidal conditions, and an artificial water head pumping dam body is arranged in the middle. The water area between the artificial water head power generation dam body and the artificial water head pumping dam body is a storage capacity energy storage reservoir, and the water area between the artificial water head pumping dam body and the water storage and energy storage power generation dam body is a water storage energy storage reservoir. The artificial water head power generation dam body is slightly higher than the maximum tide level of the tide, and the artificial water head pumping dam body is slightly higher than the maximum tide level of the tide. The dam body is at the same height as the water storage and energy power generation dam body, which is higher than the artificial water head power generation dam body; during the electricity consumption valley period at night, excess half-price electricity is used to turn on the artificial water head to pump water from the storage capacity energy storage reservoir to the water storage energy storage reservoir. The first artificial water head is used to empty the storage capacity energy storage reservoir to store energy; the second artificial water head is used to store water in the water storage energy storage reservoir; during high tide outside the electricity consumption valley period during the day, the tidal power station in the artificial water head generator dam body is turned on to generate electricity and store water for the storage capacity energy storage reservoir; during low tide outside the electricity consumption valley period, the tidal power station in the water storage energy storage dam body is turned on to generate electricity and empty the water storage energy storage reservoir.