基于数字锁相环的主被动复合反孤岛方法研究  

Study on composite islanding detection method based on digital phase-locked loop

作　　者：陆原[1] 魏大鹏[1,2] 张军伟[1] 

机构地区：[1]河北大学电子与信息工程学院,河北保定071002 [2]中国电子科技集团公司第五十四研究所,石家庄050081

出　　处：《电测与仪表》2017年第1期112-117,共6页Electrical Measurement & Instrumentation

基　　金：河北省自然科学基金(E2013201124)

摘　　要：基于由分频器代替压控振荡器的三相数字锁相环,提出一种新型主被动复合反孤岛方法。包括一种新型主动移相保护方法,一种基于锁相环同步参考坐标系原理的新型过/欠电压保护法。同时结合另两种被动检测方法,全部依托三相数字锁相环实现。该复合检测方法无检测盲区、对电能质量影响较小、检测速度满足相关要求、结构简单易于实现。通过Matlab/Simulink中的模型搭建及仿真,验证了该方法可以达到设计要求和目的。Based on a kind of three-phase digital phase-locked loop which the voltage controlled oscillator is instead of frequency divider, this paper puts forward a new primary passive compound islanding-detection method. Including a new type of active phase shift protection method, a new type of over/under voltage protection based on the principle of phase-locked loop synchronous reference frame. Combined with the other two types of passive detection methods at the same time and all depends on the three-phase digital phase-locked loop. The composite detection method is featured with no detection blind area, less impact on the power quality, the detection speed meeting the requirements, and the structure is simple and easy to realize. The model building and simulation in the Matlab/Simulink verified the method can meet the design requirements and purpose.

关 键 词：孤岛效应 数字锁相环 仿真 设计 

分 类 号：TM71[电气工程—电力系统及自动化]