2011
DOI: 10.1002/tee.20692
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Weighted least absolute value power system state estimation using rectangular coordinates and equivalent measurement functions

Abstract: This paper presents a new efficient computation technique for robust power system state estimation based on weighted least absolute value (WLAV) criterion. The proposed method employs rectangular form of state variables and equivalent measurements technique in order to obtain the linear measurement functions with linear constraints of state variables. The state estimation problem is then formulated as an optimization problem with a set of equality and inequality constraints. A solution method based on interior… Show more

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Cited by 10 publications
(17 citation statements)
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References 45 publications
(70 reference statements)
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“…1 to 2, 5 1 2 , is given by (4) where P 1 2 and Q 1 2 are the real power and the reactive power flowing from bus no. 1 to 2 respectively (3) .…”
Section: A Parametric Form Of Measurement Functionmentioning
confidence: 99%
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“…1 to 2, 5 1 2 , is given by (4) where P 1 2 and Q 1 2 are the real power and the reactive power flowing from bus no. 1 to 2 respectively (3) .…”
Section: A Parametric Form Of Measurement Functionmentioning
confidence: 99%
“…The most popular objective function is based on weighted least square (WLS) which provides a good estimation when the measurements contains only Gaussian noise. There are also SE methods which use other objective functions, for examples a weighted least absolute value [2]- [4] which gives good estimation results when some measurements contains outlier, a quadratic-linear [5], or a maximum exponential absolute value [6] which are proposed to suppress the effect of gross bad data.…”
Section: Introductionmentioning
confidence: 99%
“…The WLA V state estimation with nonlinear constraints can be solved using an efficient interior point method [4].…”
Section: Ttt State Estimation Formulationmentioning
confidence: 99%
“…However, the WLA V methods usually need more computational effort than the WLS methods. An efficient interior point based method for robust power system state estimation based on WLA V criterion has been proposed [4]. The method employs state variables in rectangular coordinates and equivalent measurements technique in order to obtain the linear measurement functions with linear constraints of state variables.…”
mentioning
confidence: 99%
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