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A New Type of Water Supply System for Pumped Storage Power Station

A pumped-storage power station and water supply system technology, applied in hydropower stations, hydropower generation, water conservancy projects, etc., can solve the problems of waste of resources and waste of electric energy, and achieve the effect of saving electric energy

Inactive Publication Date: 2019-12-17
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The pumped storage power station can convert the excess electric energy when the grid load is low into high-value electric energy during the peak period of the grid, but it has the phenomenon of waste of resources. According to theoretical calculations, the pumped storage power station needs to consume at least four for every three degrees of electricity generated. 1 kWh of electricity, if the loss of the transmission line is added, 1 / 3 of the electricity is actually wasted

Method used

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  • A New Type of Water Supply System for Pumped Storage Power Station

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Effect test

Embodiment 1

[0017] The present invention can supply water for the pumped storage power station without consuming any energy, and the control valve B 10 is always closed during the process. A pumped-storage power station will be built at a place in the lower reaches of the river where the height difference between the top of the mountain and the river is large. The elevation of the pool A5 on the top of the mountain is lower than the normal water storage level in the upstream dam, and it will be built on the bank side of part 1 of the upstream dam The water intake, the elevation of the water intake is below the normal water storage level of the reservoir, and equipped with gates, hoists and other equipment. After laying the first water pipeline 3 inside the mountain and on the land, the reservoir water is automatically transported to the upper pool A5 of the downstream pumped storage power station after the control valve A4 is opened, and the control valve A4 is closed after the water is fu...

Embodiment 2

[0019] In this embodiment, the control valve A4 is always in the closed state, and the small height difference pumped storage is used to transport water to the downstream pumped storage power station to generate electricity with a large height difference to achieve the purpose of saving electricity. Somewhere on the way of the first water delivery pipeline 3, look for a mountain, the height difference between the top of the mountain and the river course is less, and a small pumped hydropower station 8 is built on the top of the mountain. The elevation of the upper pool B9 of the pumped hydropower station is higher than or equal to the elevation of the upper pool A5 of the downstream pumped storage power station. The water in the river channel is pumped into the upper pool 9 by the pump 11, and the control valve B10 is opened, and the stored water will flow to the upper pool A5 of the pumped storage power station, and the height difference between the upper pool A5 and the lower...

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Abstract

The invention belongs to the technical field of pumped storage power station water supply system, and provides a novel pumped storage power station water supply system. The novel pumped storage power station water supply system comprises an upstream retaining dam, a water pumping power station and a downstream pumped storage power station; and the water pumping power station is located between the upstream retaining dam and the downstream pumped storage power station. A reservoir water taking opening of the upstream retaining dam is communicated with the downstream pumped storage power station through a water conveying pipe, and the upstream retaining dam is used for supplying water to an upper reservoir A. An upper reservoir B above the water pumping power station supplies water to the upper reservoir A through a water conveying pipe; and meanwhile, the upper reservoir B is communicated with a water pump through a water pumping pipe and is used for pumping water in a downstream lower riverway to the upper reservoir B. The upper reservoir A above the downstream pumped storage power station is connected with a downstream water turbine power generating unit through a water conveying pipe and is used for generating power. By means of the novel pumped storage power station water supply system, water body self-flow power generation can be achieved, the electric energy is not consumed, a water body is fed from the place with small altitude difference, and much electric energy can be saved.

Description

technical field [0001] The invention belongs to the technical field of water supply systems for pumped storage power stations, and in particular relates to an automatic water supply system that does not consume electric energy and a water supply system structure that can save electricity. Background technique [0002] Today's pumped storage power stations use the power generated by the power grid when the load is low, pump water from the lower reservoir to store energy in the upper reservoir, and release water back to the lower reservoir to generate electricity when the power grid is under peak load. The pumped storage power station can transform the excess electric energy when the grid load is low into high-value electric energy during the peak period of the grid, but it has the phenomenon of waste of resources. According to theoretical calculations, the pumped storage power station needs to consume at least four degrees for every three degrees of electricity generated. KWh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02B9/00
CPCE02B9/00Y02E10/20
Inventor 王德振刘亚坤马梦蝶高琦
Owner DALIAN UNIV OF TECH
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