Title :
Distribution fast decoupled state estimation by measurement pairing
Author :
Lin, W.M. ; Teng, J.H.
Author_Institution :
Dept. of Electr. Eng., Nat. Sun Yat-Sen Univ., Kaohsiung, Taiwan
fDate :
1/1/1996 12:00:00 AM
Abstract :
A three-phase fast decoupled state estimation method is presented for distribution systems. The weighted least square (WLS) approach is used. A current-based formulation is discussed first and then the decoupled version. The proposed method produces a constant symmetric gain matrix which can be decoupled into two identical sub-gain matrices. The method offers good performance in handling the distribution system and is many times faster than other formulations, especially for large systems. An observability test is discussed
Keywords :
distribution networks; least squares approximations; matrix algebra; observability; power system state estimation; constant symmetric gain matrix; current-based formulation; distribution network; fast decoupled state estimation; measurement pairing; observability test; sub-gain matrices; three-phase; weighted least square approach;
Journal_Title :
Generation, Transmission and Distribution, IEE Proceedings-
DOI :
10.1049/ip-gtd:19960049
