反正切滑膜频率偏移孤岛检测方法的参数优化  

Parameter Optimization of Islanding Detection Method for Arctangent Slip-mode Frequency Shift

作　　者：赵玲霞 史军[1] 李娟霞[1] 单乐[1] 张维宝 ZHAO Ling-xia;SHI Jun;LI Juan-xia;SHAN Le;ZHANG Wei-bao(College of Physics and Electromechanical Engineering,Hexi University,Zhangye 734000,China)

机构地区：[1]河西学院物理与机电工程学院,张掖734000

出　　处：《自动化与仪表》2020年第9期6-10,共5页Automation & Instrumentation

基　　金：甘肃省高等学校科研项目(2017A-087);河西学院青年教师科研基金项目(QN2016012)。

摘　　要：孤岛检测是基于逆变器并网的分布式发电系统的一个重要要求,其性能的好坏对分布式系统的安全可靠运行有直接影响。孤岛检测性能与采用的检测策略及参数设置密切相关,该文通过对反正切滑膜频率偏移孤岛检测法的原理及电网失压后并网点电压的频率偏移轨迹的分析,给出了该算法的盲区分布,并在特定负载参数下对参数进行优化。最后用仿真验证了该方法的可行性。Islanding detection is an important requirement of the distributed generation system based on the grid connected inverter.Its performance has a direct impact on the safe and reliable operation of the distributed system.The performance of islanding detection is closely related to the detection strategy and parameter setting.Based on the analysis of the principle of the arctangent slip-mode frequency offset method and the frequency offset trace of the voltage at the parallel nodes after the grid voltage loss,the blind area distribution of the algorithm is given,and the parameters are optimized under the specific load parameters.Finally,the feasibility of the method is verified by simulation.

关 键 词：孤岛检测 反正切滑膜频移 检测盲区 参数优化 

分 类 号：TM61[电气工程—电力系统及自动化]