A Novel Method of Islanding Detection in a Distributed Power Generation System Integrated with Photovoltaic-Array

Distributed generation (DG) systems have been widely applied in power systems and will also be the dominant part of future power systems. This type of generation system has features that are distinctive among non-renewable huge capacity fossil and nuclear power generation systems. These types of distributed generation are comparatively very small and most of them are constructed for the application of non-conventional energy such as hydraulic power or wind power in the generation of electricity. And, whenever this type of DG system are functioned in parallel together with main utility power systems, then particularly the power quality problem become more significant with reverse power flow. Reliability, frequency deviation, harmonics, and voltage deviation of the power system are the main power quality problems. Also, a critical, and major problem of power quality is an islanding protection. To resolve islanding problems, the detectors of islanding conditions are used to find an islanded situation and allow the circuit breaker to trip. These circuit breakers are available in between the distributed generation and the power system. This Paper presents a novel concept of the detection of islanding by the support of Slip Mode Frequency Shift (SMFS) technique for the defense of distributed generator fed systems from the Islanding conditions which has been tested and verified by the help of the proposed Simulink diagram on Matlab-2021 a platform.