电气传动2018，Vol.48Issue(3)：75-80,6.DOI:10.19457/j.1001-2095.20180315
基于电流扰动-频率偏差的孤岛检测方法
Islanding Detection Method Based on Current Disturbance and Frequency Deviation
摘要
Abstract
Islanding detection is an essential function of photovoltaic grid connected generation system.In order to reduce the detection blind area and its influence on power quality,a new islanding detection method based on reactive power current disturbance and frequency deviation was proposed.In this method,the frequency of the common coupling point was changed by injecting low frequency sinusoidal reactive current. Based on analysis of the relationship between the disturbance frequency and PCC voltage frequency fluctuation quantity by quantitative,a new evaluation index,namely the average absolute frequency deviation index,for islanding detection was definited,to determine that if PV system was in the island. Through theoretical analysis and simulation of photovoltaic power generation system,this method can detect the islanding state accurately,and has no detection blind area.关键词
无功电流扰动-频率偏差/孤岛检测/光伏发电系统Key words
reactive current disturbance and frequency deviation/islanding detection/photovoltaic power generation system分类
信息技术与安全科学引用本文复制引用
孙皓,王鲁杨,柏扬,李丽,黄思源..基于电流扰动-频率偏差的孤岛检测方法[J].电气传动,2018,48(3):75-80,6.基金项目
上海绿色能源并网工程技术研究中心资助项目(13DZ2251900) （13DZ2251900）
