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Power generation energy storage peak regulation system and method

A technology for peak shaving and power generation. It is used in hydropower generation, earth-moving drilling and mining, and engine components. It can solve problems such as power generation instability, and achieve the effects of small investment, simple implementation and stable power output.

Active Publication Date: 2021-06-08
CHINA SHENHUA ENERGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the instability of power generation existing in some arid areas in the prior art, and further provides a system and method for generating energy storage and peak regulation

Method used

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  • Power generation energy storage peak regulation system and method
  • Power generation energy storage peak regulation system and method
  • Power generation energy storage peak regulation system and method

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Experimental program
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Effect test

Embodiment 1

[0047] This embodiment provides a power generation energy storage peak shaving system, such as figure 1 As shown, it includes a surface water reservoir 100 , a water turbine 200 , an underground water reservoir 300 , a water pump 400 , and a control module 500 . Wherein, the control module 500 is connected with the power station 600 and the power grid 700, wherein the power station 600 may be a power station for new energy generation, or a power station of other power generation forms or a combination of multiple power generation forms.

[0048] The control module 500 obtains the stable output power of the power station 600 and the demanded power of the grid 700; when the stable output power exceeds the set threshold of the demanded power, it outputs an energy storage signal; when the demanded power exceeds the stable output power When the power threshold is set, a power generation signal is output. The control module 500 can perform data communication with the power station ...

Embodiment 2

[0054] The power generation energy storage peak shaving system provided in this embodiment, such as figure 2 and image 3 As shown, on the basis of the aforementioned scheme, a water purification device 800 is also included, the water inlet thereof is connected with the discharge port of the surface reservoir 100, the water outlet thereof is connected with the water demand end, and its power supply end is connected with the described surface reservoir 100 through an electric control switch 801. The power generation terminal of the power station 600 is connected;

[0055] The control module 500 obtains the unstable output power of the power station 600, and outputs a starting signal when the unstable output power reaches a preset value; the controlled end of the electronically controlled switch 801 receives the starting signal or the After the energy storage signal is turned on, the water purification equipment 800 starts to purify the water in the surface reservoir 100 and d...

Embodiment 3

[0059] The peak-shaving system for power generation and energy storage provided in this embodiment can be applied to areas where coal mining is relatively concentrated. The arid area in Northwest my country is not only an area rich in wind energy and solar energy, but also a major coal production area in my country. Coal mining will destroy the underground aquifer and produce a large amount of mine water, most of which are pumped out of the surface and discharged, which not only wastes precious water resources, but also causes certain environmental pollution. In recent years, with the increasing number of supporting power plants and coal chemical projects in the northwest mining area, the demand for water resources is increasing, and the shortage of water resources has seriously restricted the development of society, industry and agriculture in mining areas. As an important water resource in the mining area, mine water can be used for life in the mining area, coal chemical indu...

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Abstract

The present invention provides a power generation energy storage peak regulation system and method, including a control module, which outputs an energy storage signal when the stable output power exceeds the set threshold value of the demanded power, and outputs a power generation signal when the demanded power exceeds the set threshold value of the stable output power; A water discharge valve is set at the water outlet of the reservoir; the water turbine, whose water inlet is connected to the water outlet of the surface reservoir, and the power generation end is connected to the power generation end of the power station; the controlled end of the water discharge valve is turned on after receiving the power generation signal, and the water turbine replenishes electricity for the power station; Underground reservoir, which is located below the surface reservoir; water pump, whose power supply end is connected to the power generation end of the power station, its first end is connected with the underground reservoir, its second end is connected with the surface reservoir, and its controlled end starts after receiving the energy storage signal , pumping water from an underground reservoir to said surface reservoir. In the present invention, the topography difference between the surface reservoir and the underground reservoir is used to realize peak regulation of the power supply of the power station by means of pumped storage to ensure the stability of its power supply.

Description

technical field [0001] The invention relates to the technical field of electric power application, in particular to a system and method for power generation and energy storage peak regulation. Background technique [0002] With the continuous adjustment of the domestic energy structure, the installed capacity of renewable energy represented by wind power and photovoltaic power generation has increased rapidly in recent years. However, due to the intermittent and fluctuating characteristics of renewable energy, there may be several problems in power peak regulation, including power grid The peak-to-valley difference is enlarged, and the peak-shaving capacity of the system is insufficient; the frequent start and stop of large thermal power units leads to waste of resources, high wear and tear, and high coal consumption. As a result, a series of problems have been brought about, such as a high proportion of wind curtailment, solar curtailment, and the difficulty of grid connect...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03B13/06F03B11/00E21F17/16
CPCE21F17/16F03B11/008F03B13/06Y02E10/20Y02E60/16
Inventor 顾大钊李庭董斌琦李井峰
Owner CHINA SHENHUA ENERGY CO LTD
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