A comprehensive energy system with cold storage coupled with photovoltaic energy storage and its operation method

Abstract

The invention discloses a comprehensive energy system with a cold storage coupled with photovoltaic energy storage and an operation method thereof. The system includes a photovoltaic power generation unit that provides electrical energy for a cold storage unit, a compressed air energy storage unit and a pumped water storage unit, a chemical energy storage unit and a power grid unit; two The electric energy output end of the similar energy storage unit and the power grid unit are connected to the cold storage unit; the electric motor in the compressed air energy storage and pumped storage unit is connected to the air compressor, the air compressor, the energy storage container and the abandoned mine are connected in sequence, and the surface storage tank is connected. The abandoned mine is connected to the water turbine through the mine inclined shaft respectively; the abandoned mine is connected to the third heat exchanger and the inlet of the energy storage container in turn; the outlet of the energy storage container is connected to the adiabatic expander, and the adiabatic expander is coaxially connected to the generator. The energy container is also connected to the heat exchange device of the cold storage unit; the optical storage project is equipped with a cold storage to reduce the cost of electricity costs and the loss of power transmission. The constant temperature water source in the exhaust gas mine is used as the supplementary heat of the cold storage in winter, which saves the power consumption of heating in the cold storage in winter.

Description

technical field [0001] The invention belongs to the technical field of comprehensive utilization of new energy and energy storage, and particularly relates to a comprehensive energy system of a cold storage coupled with photovoltaic energy storage and an operation method thereof. Background technique [0002] At present, it is necessary to coordinate the construction of wholesale markets for agricultural product origin, distribution center, and sales place, and strengthen the construction of agricultural product logistics backbone network and cold chain logistics system. At present, the construction of cold storage in the cold chain logistics base is relatively simple, most of which are powered by external power grids, and the electricity fee calculation adopts the commercial power supply mode. Therefore, the high electricity cost is an important factor restricting the scale development of cold chain logistics cold storage. In the existing photovoltaic energy storage projec...

AI Technical Summary

Problems solved by technology

Supplementary heat is generally required before the release of energy in the energy storage system of the compressed air energy storage system, which may cause additional fuel or energy consumption

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