Islanding Detection of Wind Turbine DG Units Based on Frequency Analysis

摘要

This paper presents a passive islanding detection method based on frequency Analysis for wind turbines. The proposed method is based on frequency measurements and processing of the rate of change of frequency and accelerate of change of frequency. This method detects the islanding conditions with the analysis of these signals. The studies reported in this paper are based on time-domain simulations using MATLAB, and the feasibility of the proposed method is evaluated with an experimental system. The experimental system parameters are the same as those of the simulated system. The results show that the proposed islanding detection method succeeds in detecting islanding both in the experimental and simulated systems.