基于配变高压侧信号校正的孤岛检测方法  

Islanding detection method based on HV-side of distribution transformer signal correction

作　　者：张维 郭上华 曹奇 成鲁钰[2] 吉兴全[2] 

机构地区：[1]珠海许继电气有限公司,广东珠海519060 [2]山东科技大学电气与自动化工程学院,山东青岛266590

出　　处：《电测与仪表》2015年第3期70-73,共4页Electrical Measurement & Instrumentation

基　　金：山东省科技发展计划资助项目(2012G0020503);国家电网公司科技项目资助(2012-094)

摘　　要：非计划的孤岛运行会对系统、用户和分布式电源本身带来负面影响。现有的孤岛检测方法存在可靠性和灵敏度不高的缺陷。文章提出一种利用配电变压器高压侧电气量进行信号校正的分布式电源孤岛检测方法,可解决传统相位偏移法的误差问题。利用配电变压器高压侧电压信号产生同步的模拟正弦波,与分布式电源端电压信号进行实时的相位和频率对比,进而得出孤岛检测的判据。Unscheduled island state may bring negative effects on the system,users,and the distributed generation itself. As the existing island detection methods have the defects of low-reliability and low-sensitivity,a detection method of distributed generation by utilizing HV-side electrical quantities of distribution transformer to correct signals is proposed in this paper,which can solve the problem of the conventional phase shift detection error. A synchronized sine signal is produced and compared with the phase and the frequency of distributed generation＇s voltage signal,thus the islanding detection criterion can be obtained.

关 键 词：分布式发电 孤岛检测 信号校正 

分 类 号：TM711[电气工程—电力系统及自动化]