Composite type energy storage system

Abstract

The invention discloses a composite type energy storage system, comprising an energy storage system, wherein the energy storage system comprises an air compressor, a pressure meter, a water container, a hydro-generator, a transformer, a circulating water pump, a circulating water container and a valve system; the pressure meter is arranged on the side of the air compressor; the air compressor is connected with the water container; the water container is connected with the hydro-generator; the hydro-generator is respectively connected with the transformer and the circulating water container; the transformer is connected with a power system; the circulating water container is connected with the hydro-generator and the circulating water pump; the circulating water pump is connected with the water container; a circulating system is composed of the water container, the hydro-generator, the circulating water container and the circulating water pump. In the composite type energy storage system, a compressed air energy storage technology and a hydroelectric generation technology are utilized, the generator is driven to generate electricity at an electricity utilization peak and energy can be stored at an electricity utilization valley phase; the composite type energy storage system has advantages of comprehensiveness, high implementing efficiency, full utilization of resources, environmental protection and good stability.

Description

technical field [0001] The invention relates to the composite technical field of the combination of compressed air energy storage technology and hydroelectric power generation technology, in particular to a composite energy storage system. Background technique [0002] Obama proposed the concept of "Grid 2.0", the United States began to upgrade the old grid and applied for hundreds of related patents; Japan has fully launched distributed power generation and energy storage since the nuclear power crisis, and relevant departments have invested tens of billions of funds to support it; The plan regards smart grid and new energy power generation as national strategic development goals. [0003] The power grid refers to a small power generation and distribution system composed of distributed power sources, energy storage devices, energy conversion devices, related loads, monitoring and protection devices. It is an autonomous system that can realize self-control, protection and ma...

AI Technical Summary

Problems solved by technology

The basic requirement for the stability of the power system when maintaining the balance of active and reactive power is the same for the power grid. However, due to the intermittent and fluctuating characteristics of distributed power sources, and the randomness of load changes, it brings a negative impact on the stable operation of the power grid. To challenge, cause the problem of large power fluctuations, at the same time the power quality in the microgrid is low, in addition, there is often a certain power shortage, and the system is unstable

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