Distributed energy storage aggregation system and control method thereof

Abstract

The invention discloses a distributed energy storage aggregation system. The system comprises a micro-grid control unit and an energy unit, wherein the micro-grid control unit comprises a micro-grid control center, an information acquisition device, a communication device, a static switch, a plurality of electric operation switches and a circuit breaker; the load unit and the energy unit are connected with an alternating current bus through an electric operation switch, the alternating current bus is connected with a power grid through a static switch and a circuit breaker; and the micro-grid control center is connected with an electric operation switch, a circuit breaker, an information acquisition device, a communication device and an energy unit vector. The system is advantaged in that reasonably planned distributed energy storage can not only reduce the capacity of distribution network and peak valley arbitrage through peak cutting and valley filling, negative influence of the randomness of distributed energy storage on the safety of the power grid can be made up, and the load unit and the energy unit are correspondingly controlled through different connection states with the power grid, so a purpose of efficient, safe and economical operation is achieved.

Description

technical field [0001] The invention belongs to the technical field of automation control, and in particular relates to a distributed energy storage aggregation system and a control method thereof. Background technique [0002] With the reform and development of the domestic power system, smart grids, new energy power generation, distributed power generation and micro-grids, and electric vehicles are rapidly advancing, and a large number of distributed power sources are connected to the grid. However, the problems of randomness and short-term high load caused by distributed systems require corresponding energy storage technology to provide solutions. Therefore, distributed energy storage technology was born. The main application scenarios of distributed energy storage technology include three aspects: user side, distributed power supply side, and power distribution side. Most of them are introduced in the background of distributed power supply, user side or microgrid. Electr...

AI Technical Summary

Problems solved by technology

Compared with centralized energy storage, distributed energy storage reduces the line loss and capital pressure of centralized energy storage power stations, but at the same time, distributed energy storage also has the characteristics of decentralized layout and poor controllability

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