CN201533173U - Light, wind and water complementary pumped storage power generation peak shaving device - Google Patents

Abstract

The utility model relates to a solar-wind-water complementary pumped-storage power generation peak-shaving device, which belongs to the field of new energy development and utilization. It is characterized in that: relying on high mountains in mountainous areas, build an upper water storage reservoir on the top of the mountain, build a lower water storage reservoir in the valley, lay solar photovoltaic panels on the sunny hillside of the area, and build water storage reservoirs on the top of the mountain and surrounding areas Install wind farms in places with better wind flow conditions, set up a pumped storage power generation peak-shaving power station between the upper storage reservoir and the lower storage reservoir, and set up a water pump station at the lower storage reservoir, and install the water pipes of the pumped storage power generation peak-shaving power station separately from the upper and lower The water storage reservoirs are connected, and the inlet and outlet pipes of the water pump station are respectively connected with the lower and upper water storage reservoirs. This utility model can not only convert solar energy and wind energy into water energy for large-scale development and storage, but also enable traditional pumped storage hydropower stations to complete peak regulation of the grid without consuming or consuming less grid power. .

Description

Light, wind and water complementary pumped storage power generation peak shaving device

technical field

The utility model relates to photovoltaic, wind power and water power utilization technologies, and at the same time relates to pumped-storage power generation peak-shaving technology.

Background technique

The worldwide energy shortage and local energy crisis have affected and restricted the sustainable development of human society and economy to a certain extent. At the same time, due to the excessive dependence of human beings on traditional mineral energy and the extensive use of fuel energy, the resulting greenhouse effect and serious pollution of the atmospheric environment have made the human living environment face severe challenges. In order to change this situation, human beings have to explore new environmentally friendly and clean energy sources. Vigorously developing the development and utilization of energy sources such as solar energy, wind energy, and water energy has become an important way for countries all over the world to solve the mineral energy crisis and reduce air pollution. Since the mid-1980s, the photovoltaic and wind power generation technologies in the world have achieved rapid development, and the design and manufacturing technologies have become more and more mature, which has gradually made the photovoltaic and wind power generation technologies market-oriented, industrialized and scaled. As the country with the second largest energy consumption, my country has also done a lot of work in the exploration, development and utilization of new energy sources. Photovoltaic and wind power generation technologies are becoming increasingly mature, the scale is increasing, and the cost of power generation has gradually decreased. Tens of thousands of hydropower stations have been built one after another. The construction and operation and the grid-connected power generation of nuclear power plants have played a certain positive role in alleviating the contradiction between supply and demand of mineral energy in my country, but this is far from meeting the needs of social and economic development. It is the desire and pursuit of human beings to replace traditional fossil fuel energy with environmentally friendly and clean energy such as solar energy, wind energy, and water energy. However, since solar energy and wind energy are greatly affected by changes in climate, seasons, day and night, etc., they cannot provide people with a stable and continuous energy supply. Although there is no problem in the development and utilization of water energy, my country's water energy resources The increasing scarcity of water energy has become a severe reality, especially in many areas in northern my country, the development and utilization of water energy has been basically exhausted, which to a large extent limits and affects the demand for solar energy, wind energy and water energy in many energy industries. energy development and utilization. At present, the storage and development technologies for solar energy and wind energy are extremely limited at home and abroad. These limited technologies either have too little savings or high savings costs, which makes the process of large-scale development and utilization of solar energy and wind energy difficult. In order to solve this problem, it is particularly important to research and develop large-scale low-cost storage technologies for solar energy and wind energy. At the same time, improving the utilization value of solar energy and wind energy and opening up new fields of application are also important measures to break their bottlenecks. As a high-quality energy source for power grid peak regulation, hydropower plays an increasingly important role in the power grid. In areas where water energy resources are scarce, there is no choice but to choose to build pumped storage hydropower stations. Although the pumped-storage hydropower stations built with huge sums of money in various parts of our country have played a certain role in the peak regulation of the power grid, the large amount of electric energy consumed when pumping water and the electric energy loss caused by the conversion of hydropower to electric energy have also seriously exacerbated my country's Contradiction between supply and demand of electric energy.

To sum up, if we want to have a long-term development in the development and utilization of solar energy, wind energy and water energy, we must solve the problem of low-cost savings for large-scale development of solar energy and wind energy and the problem that pumped storage power stations do not consume power from the grid. primary task.

Contents of the invention

The purpose of this utility model is to solve the problem that solar energy and wind energy cannot be continuously and stably supplied and the power consumption of the pumped storage hydropower station itself is too large for the power grid. , Wind energy can be developed and stored on a large scale by converting it into water energy, and it can also make the traditional pumped storage hydropower station complete the peak regulation of the grid without consuming or consuming less grid power, so as to maximize the power grid. The power supply load of the country can alleviate the situation that my country's current power supply has been tight.

The utility model is realized in the following way: relying on high mountains in the mountainous area, build an upper water storage reservoir on the top of the mountain, the storage capacity of which is designed according to the adjustment of 2 to 5 days, and build a lower water storage reservoir in the valley, whose storage capacity is the upper water storage reservoir 2/5～3/5 of the storage capacity. Lay solar photovoltaic panels on sunny hillsides in this area, set up wind farms above the water storage reservoir on the top of the mountain and in places with better wind flow conditions in the surrounding areas, and set up pumped storage power generation dispatching stations between the upper water storage reservoir and the lower water storage reservoir. Peak power station, including pumped-storage power generation peak-shaving power plant and water inlet and outlet pipes, water pumping stations are set up in the lower storage reservoir, including battery packs, water pumping station workshops and water inlet and outlet pipes; Interconnection, the water inlet pipe of the pumping station is connected with the lower water storage reservoir, and the outlet pipe is connected with the upper water storage reservoir; the water pump of the water pumping station adopts a vane type water pump, and the motor adopts a DC motor, and an array of water pump units can be set; solar photovoltaic panel current output After the terminal is connected in parallel with the current output terminal of the wind farm, it is connected with the water pump unit of the pumping station through the battery pack and the wire; together.

The wind power plant arranged on the upper storage reservoir is to fix the wind power generation unit on the water surface of the upper storage reservoir through the support. The lower storage reservoir is connected with the river. Both the water pump unit and the battery pack are installed in the water pump station workshop, and the reversible unit is installed in the pumped storage power generation peak-shaving power station workshop.

The working principle of the utility model is as follows: when the solar photovoltaic panel sends current to the water pump unit of the water pump station through the battery pack, the DC motor drives the water pump to rotate at a high speed, and the water pump lifts the water from the lower storage reservoir to the upper storage reservoir, The purpose is to store solar energy in the form of water energy; similarly, when the wind farm sends current to the water pump unit of the water pump station through the battery, the DC motor drives the water pump to rotate at high speed, and the water pump lifts the water from the lower storage reservoir to the upper storage reservoir. The purpose is to store wind energy in the form of water energy. The capacity of the battery pack used is small, and its function is to buffer the power and maintain the stable operation of the water pump unit. When the power grid needs peak regulation, the reversible unit in the plant of the pumped storage power generation peak regulation power station starts to generate electricity, and the water stored in the upper storage reservoir is stored in the lower storage reservoir through the reversible unit, so that the water energy is converted into electrical energy. And the electric energy is sent to the grid for peak regulation. When the sun rises from the horizon every day, solar photovoltaic panels always obtain a large amount of electricity intermittently according to the cycle of day and night. At the same time, wind farms also randomly obtain a large amount of electricity according to the law of atmospheric changes. The panels and wind farms continuously transmit the large amount of electric energy obtained to the water pump unit of the water pumping station, and lift the water stored in the lower storage reservoir to the upper storage reservoir for storage, so as to save water energy for peak regulation of the power grid. During the daytime, the solar photovoltaic panels and the water pump unit of the water pump station convert solar energy into water energy and store it. At night, the probability of wind force is generally higher or the wind force is stronger. At this time, the wind energy is converted into water through the wind farm and the water pump unit of the water pump station. It can be saved; in spring and summer, the sun is more abundant, but the wind resources are relatively scarce; in autumn and winter, the sun is less, but the wind resources are more abundant. In this way, solar energy and wind energy can play a complementary role day and night and in seasons. When both solar energy and wind energy cannot provide enough energy to meet the peak-shaving requirements of the grid for a certain period of time, the reversible unit in the power plant of the pumped storage power generation peak-shaving power station will start The electric energy of the power grid is used for pumping operation to ensure the stable and normal operation of the utility model device. When the power grid needs peak regulation, the reversible unit in the pumped storage power generation peak regulation power station converts the water energy stored in the upper storage reservoir into electrical energy. In this way, according to the continuous cycle of day and night and season → continuous acquisition of solar energy, wind energy → solar energy, wind energy is continuously converted into water energy storage → the stored water energy is intermittently converted into electrical energy according to the peak regulation requirements of the power grid. In such a cycle, the purpose of using solar energy and wind energy for peak regulation of pumped storage power generation can be realized.

This utility model also has a certain degree of creativity, which is specifically reflected in the fact that before the filing date, domestic and foreign solar and wind energy storage and development technologies were still limited to small-scale development and high-cost savings. The pumped storage hydropower station constructed, although It plays a certain role in the peak regulation of the power grid, but it needs to consume a lot of electricity in the power grid when pumping water. The utility model aims at the problem that solar energy and wind energy cannot be continuously and stably supplied and the power consumption of the pumped storage hydropower station itself is too large, and proposes a light, wind and water complementary pumped storage power generation peak-shaving device, which can convert solar energy into water energy Large-scale development and low-cost savings can be carried out in a large-scale way, and the traditional pumped storage hydropower station can complete the peak regulation of the grid without consuming grid power. Compared with the current domestic and foreign similar technologies, it has outstanding substantive features and significant progress.

This utility model also has certain practicability, which is embodied in that the utility model can be manufactured or used, and can produce the following positive and beneficial effects:

(1) The utility model uses solar energy and wind energy in the form of water energy for large-scale development and storage, and performs power grid peak-shaving power generation, which not only solves the problem that solar energy and wind energy cannot continuously provide users with stable energy, but also provides a solution for those who cannot store electric energy The power grid conducts power grid peak regulation to save electric energy, which provides a practical and effective way for large-scale development and utilization of solar energy and wind energy.

(2) The utility model uses solar energy and wind energy to carry out pumped storage and power grid peak-shaving power generation. Compared with traditional pumped storage hydropower stations, it can completely avoid a large amount of consumption and loss of grid electric energy during pumped storage, which is helpful for improving The power supply load of the grid, improving the quality of power supply has a significant effect. It is of great significance to greatly reduce the operating cost of the pumped storage hydropower station and improve the economic benefits of the power station. It is estimated that the operating cost of the pumped storage hydropower station can be reduced by more than 80%, and the economic benefit can be increased by more than 70%.

(3) The utility model organically develops and utilizes solar energy, wind energy and water energy, which not only solves the difficult problems of the development and utilization of solar energy and wind energy effectiveness, discontinuity, and pulse randomness, but also solves the problem of water energy resource scarcity. Perform peak shaving problems for hydroelectric power generation.

(4) The utility model utilizes mountainous areas for engineering construction, which not only avoids occupying a large amount of fertile land, but also reduces the amount of engineering excavation and backfilling, and can better utilize sufficient solar energy, wind energy resources and limited water resources in mountainous areas.

(5) The utility model saves solar wind energy in the form of water energy and performs power grid peak-shaving power generation, and utilizes the characteristic that the electricity price of peak-load on-grid power generation is higher than that of non-peak-load on-grid power generation, which can make the economic utilization value of solar wind energy Further improve, thereby also greatly improved the economic benefit of the present utility model.

(6) The utility model can carry out technical transformation to the pumped storage hydropower station and the conventional hydropower station that have been built. While carrying out large-scale and high-efficiency development and utilization of solar wind energy, on the one hand, the utilization rate of water resources can be further improved, and on the other hand, it can also Significantly increase the economic benefits of conventional pumped storage hydropower stations and conventional hydropower stations.

(7) The utility model comprehensively develops and utilizes solar energy, wind energy, and water energy, which not only enables effective development and utilization of solar energy and wind energy resources, but also further enhances the value of water energy resource development and utilization, especially in northern my country. In scarce areas, the application of this utility model can change the seriously unreasonable situation of the hydropower structure of the power grid.

(8) This utility model can not only carry out small-scale development and utilization of solar energy and wind energy, but also can carry out large-scale development and utilization of solar energy and wind energy.

(9) This utility model can not only greatly increase the annual utilization hours of solar and wind power generation, but also enable the reversible unit to perform phase modulation operation of the grid when pumping and peak-shaving power generation are not performed, so as to further increase the rate of return of the utility model.

Description of drawings

Fig. 1 is an elevation sectional view of an embodiment of the utility model.

Fig. 2 is this utility model process diagram.

In the figure, 1. Solar photovoltaic panels 2. Wind farm 3. Support 4. Upper storage reservoir 5. Lower storage reservoir 6. Alpine 7. Pumped storage power generation peak-shaving power station power inlet pipe 8. Pumped storage power generation Power generation outlet pipe of peak-shaving power station 9. Outlet pipe of water pump station 10. Inlet pipe of water pump station 11. Plant building of pumped storage power generation peak-shaving power station 12. Plant building of water pump station 13. Conductor wire 14. Battery pack 15. Water pump unit 16 Reversible unit 17. Power transmission line

Detailed ways

In Figure 1 and Figure 2, an upper water storage reservoir is built on the top of the mountain relying on a high mountain, and its storage capacity is designed according to the adjustment of 2 to 5 days, and a lower water storage reservoir is built in the valley, and its storage capacity is the upper water storage reservoir 2/5～3/5 of the storage capacity. Lay solar photovoltaic panels on sunny hillsides in this area, set up wind farms above the water storage reservoir on the top of the mountain and in places with better wind flow conditions in the surrounding areas, and set up pumped storage power generation dispatching stations between the upper water storage reservoir and the lower water storage reservoir. The peak power station includes the pumped storage power generation peak-shaving power plant and the water inlet and outlet pipes, and the water pumping station is set up in the lower storage reservoir, including the water pumping station powerhouse and the water inlet and outlet pipes; The water inlet pipe of the water pumping station is connected with the lower water storage reservoir, and the outlet pipe is connected with the upper water storage reservoir; the water pump of the water pumping station adopts a vane type water pump, and the motor adopts a DC motor, and an array of water pump units can be set; the current output terminal of the solar photovoltaic panel and the wind power After the current output terminals of the power plant are connected in parallel, they are connected to the water pump unit of the pump station through the battery pack and wires; the unit of the pumped storage power generation peak-shaving power station adopts a reversible unit, and an array of reversible units can be set up, and its motor is connected to the grid through wires.

The wind power plant arranged on the upper storage reservoir is to fix the wind power generation unit on the water surface of the upper storage reservoir through the support. The lower storage reservoir is connected with the river. The water pump unit is installed in the water pump station workshop, and the reversible unit is installed in the pumped storage power generation peak-shaving power station workshop.

In the above illustrations, although the preferred embodiment of the utility model has been listed and described, it is well known that the scope of protection of the utility model should not be limited by the embodiment, that is, anyone who is familiar with the innovation of the utility model If the engineering and technical scientific research personnel of the present invention apply the main features of the utility model and carry out changes in some details, all should still belong to the scope of protection of the patent of the utility model.

Claims (4)

1. light-wind-water complementary type water pumping and energy storing power generation peak adjusting device, it is characterized in that: rely on high mountain in the mountain area, water conservation reservoir on building one on the mountain top, its reservoir capacity was regulated by 2～5 days and is designed, water conservation reservoir under building one in the mountain valley, its storage capacity is 2/5～3/5 of last water conservation reservoir storage capacity; Solar photovoltaic cell panel is laid at endroit place in this area, on water conservation reservoir on the mountain top, reach peripheral distinguished and admirable condition and wind power plant is set than benefit, between last water conservation reservoir and following water conservation reservoir, the pumping and energy storing power generation peak adjusting power station is set, comprise pumping and energy storing power generation peak adjusting power station factory building and water inlet pipe and water outlet pipe, at following water conservation reservoir pump works is set, comprises batteries, pump works factory building and water inlet pipe and water outlet pipe; Pumping and energy storing power generation peak adjusting power station water inlet pipe and water outlet pipe respectively and up and down water conservation reservoir links, and pump works water inlet pipe and following water conservation reservoir link, and outlet pipe and last water conservation reservoir link; The pump works water pump adopts the vane type water pump, and motor adopts direct current machine, and the array water pump assembly can be set; After solar photovoltaic cell panel current output terminal and the parallel connection of wind power plant current output terminal, link by batteries and lead and pump works water pump assembly; Pumping and energy storing power generation peak adjusting power station unit adopts Reversible Machinery Group, and the reversible unit of array can be set, and its motor links together by lead and electrical network.

2. a kind of light-wind-water complementary type water pumping and energy storing power generation peak adjusting device according to claim 1 is characterized in that at the wind power plant that is provided with on the last water conservation reservoir it being by support wind turbine generator to be fixed on the water conservation reservoir water surface.

3. a kind of light-wind-water complementary type water pumping and energy storing power generation peak adjusting device according to claim 1 is characterized in that water conservation reservoir and fluvial facies UNICOM down.

4. a kind of light-wind-water complementary type water pumping and energy storing power generation peak adjusting device according to claim 1 is characterized in that batteries and water pump assembly are installed in the pump works factory building, and reversible unit is installed in the factory building of pumping and energy storing power generation peak adjusting power station.

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