State estimation of power system considering network parameter uncertainty based on parametric interval linear systems

This paper addresses the state estimation of a power system whose network parameters are known to be within certain tolerance bounds. The power system is assumed to be fully observable by having enough phasor measurement units installed. Using synchronized phasor measurement data and state variables...

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Main Authors: Rakpenthai C., Uatrongjit S., Premrudeeprechacharn S.
Format: Journal
Published: 2017
Online Access:https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84856254343&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/42888
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-428882017-09-28T06:41:49Z State estimation of power system considering network parameter uncertainty based on parametric interval linear systems Rakpenthai C. Uatrongjit S. Premrudeeprechacharn S. This paper addresses the state estimation of a power system whose network parameters are known to be within certain tolerance bounds. The power system is assumed to be fully observable by having enough phasor measurement units installed. Using synchronized phasor measurement data and state variables expressed in rectangular forms, the state estimation under the transmission line parameter uncertainties is formulated based on the weight least square criterion as a parametric interval linear system of equations. The solutions are obtained as interval numbers representing the outer bound of state variables. The proposed method is also extended to a power system with mixed phasor and conventional power measurements. A technique based on affine arithmetic for converting state variable into polar form is also presented. The proposed method has been implemented using MATLAB and INTLAB toolbox and applied to some IEEE test systems. The numerical experiment results indicate that, in shorter computation time, the proposed algorithm can find the outer bounds that are close to those computed by performing Monte Carlo simulations or by solving constrained nonlinear optimization problems. © 2006 IEEE. 2017-09-28T06:41:49Z 2017-09-28T06:41:49Z 2012-02-01 Journal 08858950 2-s2.0-84856254343 10.1109/TPWRS.2011.2162859 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84856254343&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/42888
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
description This paper addresses the state estimation of a power system whose network parameters are known to be within certain tolerance bounds. The power system is assumed to be fully observable by having enough phasor measurement units installed. Using synchronized phasor measurement data and state variables expressed in rectangular forms, the state estimation under the transmission line parameter uncertainties is formulated based on the weight least square criterion as a parametric interval linear system of equations. The solutions are obtained as interval numbers representing the outer bound of state variables. The proposed method is also extended to a power system with mixed phasor and conventional power measurements. A technique based on affine arithmetic for converting state variable into polar form is also presented. The proposed method has been implemented using MATLAB and INTLAB toolbox and applied to some IEEE test systems. The numerical experiment results indicate that, in shorter computation time, the proposed algorithm can find the outer bounds that are close to those computed by performing Monte Carlo simulations or by solving constrained nonlinear optimization problems. © 2006 IEEE.
format Journal
author Rakpenthai C.
Uatrongjit S.
Premrudeeprechacharn S.
spellingShingle Rakpenthai C.
Uatrongjit S.
Premrudeeprechacharn S.
State estimation of power system considering network parameter uncertainty based on parametric interval linear systems
author_facet Rakpenthai C.
Uatrongjit S.
Premrudeeprechacharn S.
author_sort Rakpenthai C.
title State estimation of power system considering network parameter uncertainty based on parametric interval linear systems
title_short State estimation of power system considering network parameter uncertainty based on parametric interval linear systems
title_full State estimation of power system considering network parameter uncertainty based on parametric interval linear systems
title_fullStr State estimation of power system considering network parameter uncertainty based on parametric interval linear systems
title_full_unstemmed State estimation of power system considering network parameter uncertainty based on parametric interval linear systems
title_sort state estimation of power system considering network parameter uncertainty based on parametric interval linear systems
publishDate 2017
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84856254343&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/42888
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