摘要
孤岛检测是分布式发电系统必备的功能。针对传统的分布式发电孤岛检测的方法存在检测盲区大或对电能质量有影响的缺陷,提出了基于可拓模式识别的被动式孤岛检测方法。方法通过在逆变器侧测得的谐波阻抗进行训练,根据阻抗的分布特征进行模式识别,可以准确检测在逆变器输出功率和负载功率完全匹配下的孤岛效应。最后通过搭建实验平台和matlab离线数据处理,验证了此方法的正确性。
Islanding detection is an essential function in the distributed generation system. In view of the defects of large detective blind areas or power quality impact in the method of traditional distributed generation islanding detection,this paper proposed a passive islanding detection method based on extension pattern recognition. In this method,through the inverter side harmonic impedances measured for training and the characteristic impedance of the distribution pattern recognition,which can successfully distinguish islanding effect,even under the matching of inverter output power and load power. Finally,through the experimental platform and MATLAB off-line simulation,it verifies the correctness of the method.
出处
《电测与仪表》
北大核心
2016年第6期74-80,共7页
Electrical Measurement & Instrumentation
基金
广东省引进创新科研团队计划资助项目(2011N015)
关键词
孤岛检测
被动式
可拓理论
模式识别
islanding detection
passive
extension theory
pattern recognition
