Research on Thevenin Equivalent Parameters Identification based on Robust Recursive Least Square
Ding Lan1, Ban Shiqi1, Zeng Bo2
1. Nanchong Electric Power Bureau, Nanchong, Sichuan 637000; 2. State Key Laboratory for Alternate Electrical Power System with Renewable Energy Sources(North China Electric Power University), Beijing 102206
Abstract The thevenin equivalent is widely used in power system calculation for simplifying the scale. In this paper, thevenin equivalent parameter acquisition method is reviewed and the model characteristics are analyzed. Then, robust recursive least square is presented to track thevenin equivalent parameter considering numerical instability and the changing operating point of power gird. At last, the tracking performance test and four-machine two-area system simulation prove the validity and stability of the proposed algorithm.
Ding Lan,Ban Shiqi,Zeng Bo. Research on Thevenin Equivalent Parameters Identification based on Robust Recursive Least Square[J]. Electrical Engineering, 2017, 18(2): 78-82.
2017, Vol. 18 
