Composition Modeling and Equivalence of an Integrated Power Generation System of Wind, Photovoltaic and Energy Storage Unit

The electromechanical models at device level of doubly-fed wind generator, photovoltaic (PV) and energy storage unit were constructed by composition modeling method. Then, their substation level models were constructed by equivalent method. So the integrated generation's electromechanical transient model of wind-farm, PV station and energy storage station was achieved and programmed in PSD-BPA program. The simulation result for a small sample system and Zhangbei wind, solar and energy storage demonstration station verified the model's validation. The composition model and equivalence will provide an effective analysis tool for grid-connection of integrated generation.