Large power underwater constant pressure storage plant

Abstract

The invention relates to a proposal of a large power underwater constant-pressure power storage station, which comprises an energy conversion device, an electricity generation control device, conduitcables and underwater power storage pin groups. The energy conversion device, under the automatic control of the electricity generation control device, can convert the electricity energy or the renewable energy into the compressed air energy, and then transmit the air energy to the underwater power storage pin groups for storage through the conduit cables; or under the automatic control of the electricity generation control device, the compressed air energy stored in the underwater power storage pin groups can be converted into the electricity energy. The proposal of the invention is characterized in that firstly the surplus electricity at night and various renewable energy sources can be stored in a large amount in the long term; secondly, the outputted air pressure is constant and the energy utilization is complete; thirdly, the storage scale can be large or small, therefore, the power storage station is widely applicable to water areas and occupies less land; fourthly, the construction cost and the maintenance cost are low, the construction period is short while the service life is long; fifthly, the station can automatically shift and float and is not liable to the environmental influence and man-made damage under the water.

Description

technical field [0001] The invention relates to an energy storage power station, in particular to a high-power underwater constant pressure energy storage power station. Background technique [0002] It has been difficult to effectively solve the problem of how to develop and utilize various scattered and unstable renewable energies at sea and how to shave power grid energy storage peaks. An effective method for energy storage and peak regulation of the existing power grid is to build a pumped storage power station. However, the problems of this kind of pumped storage power station are that it is difficult to select a site, occupies a large area, has a long construction period, and requires a large investment. Another method for the development and utilization of existing renewable energy and peak-shaving power grid energy storage is to build a compressed gas storage power station, but this kind of compressed gas storage power station also has the following problems: First, ...

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Problems solved by technology

[0004] The present invention aims to solve the problems of difficult site selection, long construction period and large investment in the existing pumped storage power station; the strict requirements on the geological structure, pressure resistance and airtightness of the shell in the compressed gas storage power station, Problems of unstable power generation, incomplete energy utilization, and low safety

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