An Islanding Detection Method Based on Voltage Harmonics and Adaptive Power Disturbance
Based on the existing active islanding detection method known as power disturbance, an adaptive power disturbance (APD) method is proposed.This method calculates the minimum power disturbance value required to effect islanding detection based on the relationship between the voltage at the point of common coupling (PCC) after islanding and the power generated by the inverter.The conventional passive islanding detection methods are combined with this active method using APD to produce a novel islanding detection scheme.Increment of voltage harmonics is used to initiate the APD, which confirms a genuine islanding condition.A simulation model of a three-phase grid-connected inverter was built using PSCAD/EMTDC, and the proposed method was verified.The simulation results show that this method can detect islanding effectively without non-detection zone (NDZ) and does not mal-operate during false islanding.
Adaptive power disturbance Distributed generation Islanding detection Over/under frequency Over/under voltage Voltage harmonics
Yunkun Xu Tony Yip Jinghan He Zhicheng Li Zelong Chen
School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China
国际会议
南京
英文
634-639
2015-09-21（万方平台首次上网日期，不代表论文的发表时间）