【摘要】 微电网在孤岛运行状态下储能变流器输出电压、频率不稳定和有功、无功功率不平衡，变流器传统的下垂控制不能对微电网孤岛运行的电压和频率进行无静差调节，且无法满足微电网孤岛运行的有功、无功功率平衡。基于此，提出一种多储能变流器分层协同控制方法。在综合考虑储能变流器运行控制目标和微电网相邻储能变流器信息交换的基础上，设计微电网分层互联分布式协同控制结构，对多系统的分布式控制方法进行改进。对微电网的多个储能变流器开展仿真实验，结果证明了所提控制策略的有效性和协同控制能力。更多还原

【Abstract】 The output voltage and frequency of energy storage inverters in microgrids are unstable and the active and reactive power are unbalanced under islanded operation.The traditional droop control of inverters cannot adjust the voltage and frequency of microgrid islanded operation without static error, and can not meet the active and reactive power balance of microgrid islanded operation. Based on this, a hierarchical collaborative control method for multiple energy storage inverters is proposed.Based on the comprehensive consideration of the operational control objectives of energy storage inverters and the information exchange between adjacent energy storage inverters in microgrids, a hierarchical interconnected distributed collaborative control structure for microgrids is designed, and the distributed control method for multiple systems is improved.The simulation experiments results on multiple energy storage inverters in microgrids show that, the proposed control strategies have the effectiveness and collaborative control ability.更多还原