Islanding Detection Approach based on Harmonics in Power system Integrated with Multiple DERs

Abstract

All the Countries worldwide are trying to contribute to environmental protection, including developing green energy and expanding ecological protection. Electrical power has become one of the essential objects of green energy development. Distributed energy sources (DES), i.e., combining renewable energy generation sources and load, can effectively solve the problem of large-scale access to alternative energy and increase the dependability and flexibility of conventional power system. However, DES integration poses serious issues, such as poor power quality, two-way power flow, and unintentional island formation. The islanding of distributed generation (DG) units impacts the maintenance team's safety, which can also harm protective equipment. This paper proposes a passive islanding detection approach (PIDA) for multiple DGs-based power system that uses harmonic contents data to determine islanding conditions. The multiple DER-based Matlab-Simulink environment validates the efficacy of the proposed method by demonstrating a negligible non-detection zone and robust islanding detection in practical scenarios.