微电网含多PCS下的混合控制策略研究  

Study on Hybrid Control Strategy of Microgrid with Several PCS

作　　者：白迪[1] 曹华锋[1] 赵志刚[1] 

机构地区：[1]沈阳工程学院电力学院,辽宁沈阳110136

出　　处：《东北电力技术》2016年第7期5-8,33,共5页Northeast Electric Power Technology

摘　　要：在传统的微电网控制策略中,下垂控制在微电网负荷波动过高时造成其电压与频率偏移较大,而V/F控制对储能的容量要求过高。针对此缺陷,提出了一种混合式的控制策略,弥补了两种策略的缺陷。在该策略下,当作为主电源的储能系统无法支撑微网的电压与频率时,会自动转变为下垂控制,同时其他的储能系统由P/Q控制模式自动转变为下垂控制,形成多重主从控制,自动协调多个PCS(储能逆变器)的有功输出。该策略可根据实际微电网的容量进行设定并且自行控制,具有自适应性。最后,搭建了MATLAB/SIMULINK的仿真模型,验证了新策略的正确性。For traditional micro-grid control,micro-grid voltage and frequency offset larger when large fluctuations in load fluctuations under droop control,V/F control requires high energy storage capacity. A hybrid control strategy is proposed. When the storage system operating as a main power can not support micro-grid voltage and frequency,it automatically converts to droop control. Other energy storage system by the P/Q automatically becomes droop control to form a multiple master-slave control. The policy can be set according to the capacity to control their own actual microgrid,it has high suitability. MATLAB/SIMLINK simulation platform is builted to verify the feasibility of strategy.

关 键 词：微电网 主从控制 控制策略 PCS 

分 类 号：TM921.5[电气工程—电力电子与电力传动]