Impacts of Output Fluctuations from Photovoltaic Power Generation Systems on the Autonomous Control of Step Voltage Regulators Operatable under Reverse Power Flow Conditions

Abstract

When a step voltage regulator (SVR) which is operatable under reverse power flow conditions fails to recognize the substation direction, it is concerned that the SVR may continuously raise or lower the voltage in an abnormal way. In this article, the substation-direction recognition failure is reproduced by an electromagnetic transient simulation to assess this problem.