摘要
微网离网运行时,要求电压和频率稳定。针对风电和光伏的间歇性波动以及负载的频繁投切特性,微网需要储能系统平衡有功和无功功率。本文首先基于RT-LAB搭建了储能系统离网运行实验平台,然后在传统的V/f单环控制基础上,对比分析了电感电流内环和电容电流内环两种双环控制方法,改进了传统的恒压恒频控制,该控制策略有更好的抗负载电流扰动特性。最后在matlab/simulink环境下进行了仿真,并且在RT-LAB平台上进行了半实物仿真验证,结果表明了提出控制策略的有效性。
It is required a stable voltage and frequency for microgrid during islanded operation.As to such characteris-tics as intermittent fluctuations of wind generation and PV and the frequently switching of load,the battery energy storage system （BESS）should balance active and reactive power for microgrid.In this paper,experiment platform of islanded battery microgrid is built based on the RT-LAB, and the difference between the inductance current inner loop and the capacitive current inner loop is compared based on the traditional V/f control to improve traditional con-stant voltage constant frequency control,which has better anti-disturbance features of load current.In the end,the simulation model is established under matlab/simulink,and hardware-in-the-loop simulation is verified on the RT-LAB platform.The simulation experimental results verify the ef-fectiveness of the proposed control strategy.
作者
朱观炜
谭伟璞
闫涛
渠展展
刘志波
ZHU Guanwei TAN Weipu YAN Tao QU Zhanzhan LIU Zhibo(School of Electrical ＆ Electronic Engineering, North China Electric Power University, Beijing 102206, China Electric Power Research Institute, Beijing 100192, China)
出处
《现代电力》
北大核心
2016年第6期33-36,共4页
Modern Electric Power
