摘要
针对微电网中配备有储能环节的分布式逆变器,采用了一种新的控制策略,使其具有传统下垂特性的同时,还具有同步发电机转子惯性的特性,提高了频率的稳定性。该策略使得分布式逆变器在孤岛运行模式及并网运行模式下均工作于电压源模式,有利于无缝切换的实现,且并网运行模式下,分布式逆变器能按功率指令与电网进行能量交互。实验结果验证了该方案的可行性。
For the control of distributed generation （DG） inverter which is equipped with energy storage devices in a microgrid, a new control strategy is adopted, which enables the DG inverter to maintain the droop characteristics, and to have virtual inertia as synchronous generator rotors.So the frequency stability can be improved.Under the control strategy, the DG inverter works as vohage sources in both grid-connected mode and islanded mode,which is good for the realization of seamless transfer, and DG inverter can exchange energy with grid by power command.The experimen- tal results verify the feasibility of the scheme.
出处
《电力电子技术》
CSCD
北大核心
2012年第10期9-10,16,共3页
Power Electronics
关键词
微电网
逆变器
频率稳定性
microgrid
inverter
frequency stability
