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Weighted least squares methods for load estimation in distribution networks
Journal article

Weighted least squares methods for load estimation in distribution networks

Jie Jie Wan and K.N Miu
IEEE transactions on power systems, v 18(4), pp 1338-1345
Nov 2003

Abstract

Intelligent networks Power distribution Power system economics Power generation economics Power systems State estimation Least squares approximation Observability Least squares methods Load modeling
This paper investigates two weighted least squares (WLS) approaches to the problem of load estimation (LE) in unbalanced power distribution networks: (1) the WLS load parameter method in is restated more rigorously; and (2) a constrained distribution state estimation (DSE)-based method is introduced to consider operating and loading constraints. Detailed simulation results on 394-bus radial and weakly meshed power distribution systems are evaluated through four error indices proposed by the authors previously (see Proc. IEEE Int. Symp. Circuits Syst., Pheonix, AZ, vol.5, p.697-700, 2002). The results of both methods are compared and discussed. Observability issues are also addressed.

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Web of Science research areas
Engineering, Electrical & Electronic
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