鲍晓婷,陈永强,张超,张金刚,余飞鸿.一种改进的频率正反馈无功电流扰动孤岛检测研究[J].电测与仪表,2018,55(15):25-30. Bao Xiaoting,Chen Yongqiang,Zhang Chao,Zhang Jingang,Yu Feihong.An Improved Frequency Feedback Detection Method for Reactive Power Current Disturbance Islanding[J].Electrical Measurement & Instrumentation,2018,55(15):25-30.
一种改进的频率正反馈无功电流扰动孤岛检测研究
An Improved Frequency Feedback Detection Method for Reactive Power Current Disturbance Islanding
The islanding detection technology can guarantee the safe operation and stable operation of the inverting photovoltaic power generation system in connection with the power system. Based on the analysis of the traditional method of reactive current disturbance, this paper presents an improved frequency positive feedback method for reactive current disturbance islanding detection. Through the periodic application of the reactive disturbance current and the positive feedback function of the disturbance function, the amount of reactive disturbance is increased to limit the frequency, so as to achieve the anti-islanding effect protection function. The simulation model was built by Matlab/Simulink simulation software. The experimental results show that this method has little influence on power quality and does not inject harmonics into the power grid. It has the advantages of no detection blind zone and fast detection speed.
