Transient Analysis of Power System with All Inverter Power Sources

In relatively small islands, diesel generators are the main power source, but in the near future, a large amount of renewable energy sources which are interconnected via inverter are expected to be introduced in terms of cost. The problem is that power supply via inverter, which is called as ‘inverter power sources’ in the paper, does not have synchronizimg power and inertia like conventional synchronous generators. So there is no force to restore the system state against disturbances. A system model composed of all inverter power sources has been created. With this model, analyzed is the continuity of operation of the inverter power supply when loads change or system faults occur. The goal of this study is to evaluate feasibility of a system with all inverter power sources.