Advanced Islanding Operation Method Integrating Multiple Power Supplies Including Photovoltaic Power Generation

Abstract

This study focuses on stand-alone power operation in a house during a blackout. The purpose of this type of operation, known as islanding, is to balance the power supply with load demand fluctuation, and to ensure its long-term sustainability. Therefore, we used multiple forms of power supply such as a battery energy storage system (BESS), PV generator, and a home energy management system (HEMS) to control the load of appliances. The four types of power generation equipment (the PV system, BESS, electric vehicle (EV), and fuel cell (FC)) have different characteristics in terms of their output power, capacity, and response time, etc. In consideration of these output properties and the response time of the power generation equipment, we implemented control to enable the islanding operation to continue, which was verified to be effective even in a limited power supply situation.