电测与仪表Issue(10)：28-32,5.
基于电流幅值扰动的孤岛检测新方法
Novel Islanding Detection Method Based on Current Amplitude Perturbation
摘要
Abstract
This paper proposes an easy and simple current amplitude perturbation method for islanding detection in order to solve the unstable problem of the photovoltaic system caused by the voltage disturbance and power grid noise with the voltage positive feedback current amplitude perturbation method. In the method, a tiny perturbation is added into the given current waveform so that the tracking control action of current loop will change the inverter output power and cause the frequency of PCC (the point of common coupling) to shift when the islanding occurs, thus the islanding detection is implemented. In this paper, the relationship between current THD (total harmonic distortion) and perturbation factor is deduced and the perturbation factor range is given. Both the simulation results and the comparison with NDZ(non-detection zone) for AFD(active frequency drift) verify that the method is correct, feasible and valid.关键词
电流幅值扰动/光伏系统/孤岛检测/总谐波畸变率Key words
current amplitude perturbation/photovoltaic system/islanding detection/THD分类
信息技术与安全科学引用本文复制引用
阎昌国,龚仁喜,曾虎森..基于电流幅值扰动的孤岛检测新方法[J].电测与仪表,2013,(10):28-32,5.基金项目
广西省自然科学基金资助项目 （）
南宁市科技计划资助项目 （）
