A practical equivalence method of large scale wind farm

Abstract

Large scale wind power integration is the main way of wind power development in China. In simulation research, a large scale wind farm is necessary equivalent to be one aggregated model. The existing equivalence methods only consider the external characteristics of wind farm, and ignored the coupling relationship between units and power system. Through a massive simulation at different wind power mode scheduling and unit's operating point, this paper shows a wind farm operation condition, which its impacts on power system is severe. A practical equivalence method based on wind farm operation condition is proposed, and the effect of the method is validated by comparing the aggregated and detailed models. Index Terms--equivalence method; large scale wind farm; transient stability; wind power mode scheduling; wind turbine generator operating point; wind farm operating condition