A Transient Component-Based Technique for Fault Detection in Distributed Generation Systems

Abstract

In this paper, transient current and voltage responses, caused by low and high impedance faults in a power system with distributed generation (DG) systems, are investigated. The proposed approach utilizes a novel transient index (TI) based on the voltage during fault at the point of common coupling. The proposed technique uses voltage signals at DG connection point to provide the value of TI. The performance of the proposed scheme is evaluated on a power system consisting of photovoltaic systems and wind turbine generators as the case study by using a real-time simulator. The simulation results, which will be included in the full paper, show the fast and reliable operation of the proposed fault detection technique as compared to the existing fault detection methods, not only for low impedance transient faults but also for high impedance faults.