关键词：电力系统；分布式发电；小水电；暂态稳定；负荷建模；PSASP
摘 要：With different element models and parameters in power system,the transient stability analysis results are also different,especially the model of generator and load.Based on the actual parameters of Hunan power grid,this paper builds the synthesis load rnodel of the distribution network with small hydropower considered,and then the Hunan simulation network can also be got.Using PSASP,analyses the transient stability of Hunan power system with distributed small hydropower under different operation modes systematically and comprehensively.Through an overall check of the stability level in each Hunan area,and then compared with the analysis results of Hunan power grid based on the currently used load model,the influences of the distributed small hydropower on the safe and stable operation of the large power network are summarized.