Islanding Detection, Voltage Mitigation, and Synchronization for Solar Power Systems in Smart Grids

Abstract

Islanding occurs when Distributed Generation (DG) units continue to energize a part of the grid which has been isolated from the main electrical utility. In this situation, Transient Over Voltages (TOVs) might arise if the DG power exceeds the load. Because of the adverse effects of islanding and TOVs, power system sections must detect and mitigate the TOVs, as well as disconnect the DG systems from the grid if necessary. In order to detect islanding, mitigate TOVs, and run the microgrid in the islanded mode a communication method based on wireless sensor network is proposed. The effectiveness of the method is discussed through different simulation scenarios and conclusion is offered.