基于抗干扰六点测频法的主动频移孤岛检测  

Active frequency shift islanding detection based on anti-interference six-point frequency detection algorithm

作　　者：应展烽[1] 陈运运[1] 田亚生 吴军基[1] 冯凯[1] 

机构地区：[1]南京理工大学能源与动力工程学院,江苏南京210094 [2]江苏省电力公司扬州供电公司,江苏扬州225009

出　　处：《电力自动化设备》2013年第4期72-76,共5页Electric Power Automation Equipment

摘　　要：主动频移法中频率检测的可靠性受电网中干扰影响,易错误地将干扰情况判断为孤岛效应发生的情况。为了能避免孤岛效应误判现象的发生并快速检测出孤岛,提出了主动频移孤岛检测中的抗干扰六点测频法,该方法通过对最优检测点间隔进行估计和频率奇异点的剔除,抑制了电网中干扰。根据IEEE Std929—2000规定的最严重情况进行孤岛测试仿真研究,仿真结果表明,所提方法具有防孤岛误判、响应快速、无检测盲区等优点。The frequency detection reliability of active frequency shift method is easily influenced by the grid interferences,which may be wrongly taken as the occurrence islanding effect. The anti-interference six- point frequency detection algorithm is adopted in the active frequency shift method to avoid such misjudgement and quickly detect islanding,which applies the optimal interval of detection point and eliminates the frequency singularity to suppress the grid interference. The simulative research of islanding detection is performed according to the worst conditions stipulated by IEEE Std929-2000 and results show that,with fast response,the proposed method prevents the misjudgement and has no nondetection zone.

关 键 词：主动频移 频率检测 孤岛误判 抗干扰六点测频法 

分 类 号：TM743[电气工程—电力系统及自动化]