基于FOGI的微网不平衡负载补偿策略研究  

Research on compensation strategy of unbalanced load of microgrid based on FOGI

作　　者：周建萍 王涛 张纬舟 李泓青 李欣煜 郭昱交 ZHOU Jianping;WANG Tao;ZHANG Weizhou;LI Hongqing;LI Xinyu;GUO Yujiao(School of Automation Engineering,Shanghai University of Electric Power,Shanghai 200090,China;Shanghai Engineering Research Center of Intelligent Management and Control for Power Process,Shanghai 200090,China)

机构地区：[1]上海电力学院自动化工程学院,上海200090 [2]上海发电过程智能管控工程技术研究中心,上海200090

出　　处：《电力系统保护与控制》2018年第21期11-17,共7页Power System Protection and Control

基　　金：国家自然科学基金项目(61275038);上海市重点科技攻关计划(14110500700);上海市科委项目(13DZ2273800)~~

摘　　要：针对孤岛微网中不平衡负荷导致逆变器输出不平衡电流的问题,提出了基于四阶广义积分器(FOGI)的基波正序电流分离的电流补偿策略。该策略利用四阶广义积分器构成基于基波正序分量分离的不平衡电流补偿控制结构,实现线路上不平衡电流的补偿。对FOGI与二阶广义积分器(SOGI)的补偿效果进行比较,结果证明FOGI具有比SOGI更强的补偿能力,能够充分地补偿线路上的不平衡电流。仿真结果也表明,所提控制策略具有更强的不平衡补偿能力和谐波抑制能力。As for the problem of unbalanced current output from the inverter due to the unbalanced load in the island microgrid,a current compensation strategy based on Fourth Order Generalized Integrator(FOGI)for fundamental wave positive sequence current separation is proposed.The method uses the FOGI to construct the unbalanced current compensation strategy based on fundamental wave positive sequence component separation,which compensates the unbalanced current in the microgrid.The compensation results comparison of FOGI and Second-Order Generalized Integrator(SOGI)shows that FOGI has stronger compensation ability than SOGI,and can compensate the unbalanced current on the line fully.Simulation results show that the proposed method has better imbalance compensation ability and harmonic suppression ability.

关 键 词：不平衡负载 正序分量 四阶广义积分器 补偿 

分 类 号：TM464[电气工程—电器]