A micro-energy grid composite energy storage system
A composite energy storage and micro-energy technology, which is applied in the field of micro-energy grid composite energy storage systems, can solve the problems of low operating efficiency of gas-fired units and capacity redundancy of energy storage systems, etc., to reduce capacity redundancy, improve power generation efficiency and, The effect of improving economy
Active Publication Date: 2019-11-05
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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[0004] The purpose of the present invention is to provide a micro-energy grid composite energy storage system to solve the problems of redundant capacity of the energy storage system and low operating efficiency of gas-fired units in the current solar distributed micro-grid
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[0031] Such as figure 1 As shown, a micro-energy grid composite energy storage system includes two parts: a power storage system 10 and a heat storage system 20 . The user's electrical load is provided by the photovoltaic system 100, the gas-fired unit 200, and the power storage system 10; the user's heat load and cooling load are provided by the gas-fired unit 200, the gas-fired boiler 300, and the heat storage system 20; Recycled to provide heat load for users, and cooling load is obtained by converting system heat energy through absorption refrigeration unit 500 .
[0032] The power storage system 10 is used to store and release the electric energy of the micro-energy grid, and the heat storage system 20 is used to store and release the heat energy of the micro-energy grid. The start and stop of the heat storage system 20 and the direction of energy flow are controlled, and the order is as follows: the user's electric load is provided by the photovoltaic system 100 and the...
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The invention discloses a micro energy grid recombined energy storage system. The micro energy grid recombined energy storage system relates to supply of an electric load, a thermal load and a cold load of users and comprises an electricity storage system and a heat storage system. The electric load is provided by a photovoltaic system, a fuel gas unit and the electricity storage system. The thermal load and the cold load are provided by the fuel gas unit, a fuel gas boiler and the heat storage system, wherein thermal energy produced by the fuel gas unit provides the thermal load through recycle of a waste heat boiler, and the cold load is obtained through the thermal energy of a transforming system of an absorbing type refrigeration unit. The energy storage system is used for storage andrelease of electric energy in the micro energy grid. The heat storage system is used for storage and release of the electric energy and the thermal energy in the micro energy grid. The micro energy grid recombined energy storage system has the advantages that a control strategy is combined to design a capacity optimization method of the recombined energy storage system, capacity redundancy of theenergy storage system is effectively reduced, and economy of the system is enhanced.
Description
technical field [0001] The invention relates to the technical field of micro-energy grids, in particular to a composite energy storage system for micro-energy grids. Background technique [0002] The solar distributed micro-grid system can fully meet the diversified energy needs of users while utilizing solar energy resources. It is of great significance to improve energy utilization efficiency, improve energy consumption structure, reduce environmental pollution and the occurrence of haze weather. One of the main forms of utilization. Applying the energy storage system to the solar distributed micro-grid can reduce the fluctuation of renewable energy output, solve the system instability and adjust the balance of energy supply and demand; at the same time, it can also play the role of peak shaving and valley filling, frequency regulation and voltage regulation, and improvement of power quality. Therefore, energy storage technology is considered to be a key technology for th...
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IPC IPC(8): F02C6/00F02C6/18F24D11/00H02J3/38H02J3/46H02J3/28H02J3/32
CPCF02C6/00F02C6/18F24D11/003F24D11/004H02J3/28H02J3/32H02J3/381H02J3/385H02J3/46Y02E10/56Y02E70/30
Inventor 林仕立杨昌儒宋文吉冯自平吕杰
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI