Study on black start strategy of microgrid with PV and multiple energy storage systems

The capability of black start (BS) is vital for microgrid, which can reduce the interruption time and the economic loss brought by outage. This paper presents a black start strategy for the microgrid with PV and hybrid energy storage systems, based on a serial restoration strategy. The primary reference source with black start capability runs V/f control mode to establish pre-specified voltage and frequency. After that, check the requirements to connect the loads and the photovoltaic (PV) system. If the requirements are met, adjust the active power and reactive power of the PQ adjustable microsources, and then the loads and the PV are connected to the bus. If the loads and microsources are all connected, the BS procedure is finished. The experimental results of microgrid black start validate the effectiveness and feasibility of the strategy.