Power Hardware-in-the-loop test for cyber physical renewable energy infeed: Retroactive effects and an optimized power Hardware-in-the-Loop interface algorithm

In present and future electrical networks more and more cyber physical renewable energy infeed are to be integrated. To ensure nevertheless the safe grid operation with an increasing number of these infeeds, reliable certification is required. Due to the lack of the retroactive effects from the conventional test method, the dynamic behaviors during the test are different from the real situation. In order to realize the retroactive effects, this paper presents a power Hardware-in-the-Loop (PHIL) test system. This paper focused on an optimized PHIL interface algorithm, to avoid the instability from the ideal transfer method. Finally, the PHIL test system has been built in the laboratory. The function of the PHIL test system is verified by a set of PHIL tests for photovoltaic inverter.