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Improved coordinated control strategy of hybrid energy storages in PV Power Smoothing

机译：PV功率平滑中的混合能量储存的改进协调控制策略

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摘要

High penetration of renewable energy could causes system frequency fluctuation of power flow and this significantly affects the power system operation.Control strategy of Flywheel and lithium battery hybrid energy storage system(HESS)is designed in this paper.An improved energy allocation strategy of grid-connected PV power smoothing strategy is designed.Coordinated control strategy is added to avoid the power output direction inconsistent of two kinds of storage,and consider energy storage SOC level simultaneously.This strategy effectively reduces the number of charge and discharge cycles of energy storage system(ESS).The strategy is applied to a demonstration project.Results show that the proposed coordinated control strategy can improve the life expectancy of the battery and reduce the operating cost.
机译：可再生能源的高渗透可能会导致电力流量的系统频率波动，这显着影响电力系统操作。本文设计了飞轮和锂电池混合储能系统（HESS）的控制策略。改进了电网的能量分配策略 - 设计了连接的光伏电源平滑策略。添加了控制策略，以避免功率输出方向不一致两种存储，并同时考虑能量存储SOC水平。该策略有效地减少了能量存储系统的充电和放电循环次数（ ESS）。该战略适用于示范项目。结果表明，拟议的协调控制策略可以改善电池的预期寿命，降低运营成本。

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