Transient performance of PV/SMES hybrid dispersed power source

One of the problems associated with photovoltaic generation systems (hereafter PV) is the unstable output caused by the insolation fluctuation. In order to compensate the PV output fluctuation a hybrid dispersed power source consisting of a PV system coiled with a superconducting energy storage system (hereafter SMES) is proposed in this paper. The SMES system can also contribute to compensation of effective and reactive power demand fluctuation in the power distribution system. In this paper, insolation fluctuation data are shown according to field measurement results and transient performance simulation was carried out using circuit analysis software PSIM in order to examine the effectiveness of the above-mentioned PV/SMES hybrid system for eliminating the influence of the PV output fluctuation. In addition, it was also confirmed by circuit simulation using PSIM that this hybrid system is effective for reducing transient influence caused by sudden change of effective and reactive load demands.