To avoid islanding and loading protection problems, the strategy of this study is to supply power from either PV system or grid system, depending on the power requirement.

• 本文所提之操作策略，乃是透过继电器所组成的电源切换模组来作控制，使太阳能与市电系统交互供电，可避免并联市电所造成之孤岛效应或负载保护等问题。