Sequence Angle-Based Passive Algorithm for Islanding Detection of the Distribution System
摘要
Inadvertent islanding is one of the most serious issues associated with the power system. Therefore, unexpected islanding can lead to several technical issues, including deteriorating power quality, protective device failures, and personnel safety concerns. To overcome the above issues. An innovative passive islanding technology based on the rate of change of the superimposed positive sequence angle (ROCOSPSA) is developed in this study. The current and voltage signals are monitored at the DG terminal to get the computed islanding index (ROCOSPSA). If the value of ROCOSPSA is beyond a specified threshold, islanding may be identified. Otherwise, grid-connected mode. The distributed energy system was developed using the MATLAB/Simulink software. Simulation outcomes demonstrate that the suggested strategy efficiently distinguishes between islanding and non-islanding occurrences. Additionally, the suggested technique has a near-zero detection zone, no power quality issues, and islanding detection in 9 ms.