Generated power control system and control method for intelligent micro-grid with medium energy storage function

Abstract

The present invention discloses a generated power control system and control method for an intelligent micro-grid with a medium energy storage function. The control system mainly comprises: a wind-solar complementary power generation system, a photothermal generator set with the medium energy storage function, a micro-grid power control system, etc. The control method comprises: by a micro-grid power control center, receiving a power instruction transmitted from a micro-grid dispatching automation system in real time; collecting generated power of the wind-solar complementary power generation system in real time; and calculating a micro-grid optimal power allocation scheme by an energy management system. According to the power allocation scheme, by carrying out coordination control on heat storage of a heat storage system, a heat release rate, and the generated power of the photothermal generator set, stable output of the generated power of the micro-grid is achieved. According to the control method, technical defects of uncontrollability, discontinuity, large fluctuation adn the like of wind energy and solar generated power, which are caused by change of the external environment, can be overcome, the generated power of the micro-grid is stabilized, electric energy of new energy can be consumed to the greatest extent, and the problem of phenomena of ''wind curtailment'' and ''light curtailment'' in the new energy can be effectively solved.

Description

technical field [0001] The application belongs to the technical field of distributed power generation and microgrid, and in particular relates to a smart microgrid control system and control method for wind power, photovoltaic, photothermal and large-capacity medium heat storage. Background technique [0002] New energy represented by wind power and photovoltaic power generation has achieved tremendous development in recent years. However, due to the influence of changing weather conditions, its power generation fluctuates greatly, especially in the direct grid connection of large-scale centralized new energy power plants, which will have a greater impact on the power grid. Therefore, the phenomenon of "abandoning wind" and "abandoning light" has appeared in many areas of China. In order to solve this phenomenon, my country is vigorously developing a micro-grid system with distributed power as the core to realize the local consumption of wind power and photovoltaic power ge...

AI Technical Summary

Problems solved by technology

Among them, chemical energy storage, such as battery energy storage, supercapacitor energy storage and other modular methods, can be well controlled, but the total storage energy is limited and the cost is high; mechanical energy storage, such as flywheel energy storage, pumped water storage and other methods, although energy storage Large capacity, but low energy conversion efficiency and limited by geographical conditions, technology and other factors

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