Power system state and transmission line conductor temperature estimation

© 1969-2012 IEEE. This paper presents a state estimation technique for three-phase power systems where not only bus voltage phasors but also the temperature of transmission line conductors is considered as states. Transmission line admittance parameters depending on line conductor and ambient temper...

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Main Authors: Chawasak Rakpenthai, Sermsak Uatrongjit
Format: Journal
Published: 2018
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http://cmuir.cmu.ac.th/jspui/handle/6653943832/46802
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-468022018-04-25T07:24:50Z Power system state and transmission line conductor temperature estimation Chawasak Rakpenthai Sermsak Uatrongjit Engineering Agricultural and Biological Sciences © 1969-2012 IEEE. This paper presents a state estimation technique for three-phase power systems where not only bus voltage phasors but also the temperature of transmission line conductors is considered as states. Transmission line admittance parameters depending on line conductor and ambient temperature are approximated from the pre-computed data based on polynomial interpolations. Weather environment and heat-balance equations have been also included in the measurement functions in order to estimate the temperature of conductors. The technique for segmenting transmission lines is also applied for handling temperature variations along the lines. The estimation problem is then formulated as a constrained nonlinear optimization based on the weighted least-squares criterion. A solution is obtained by applying a predictor-corrector interior point algorithm. Simulation results on some three-phase power systems indicate that the proposed method yields estimations with a better accuracy. 2018-04-25T07:01:52Z 2018-04-25T07:01:52Z 2017-05-01 Journal 08858950 2-s2.0-85018945558 10.1109/TPWRS.2016.2601072 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85018945558&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/46802
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
topic Engineering
Agricultural and Biological Sciences
spellingShingle Engineering
Agricultural and Biological Sciences
Chawasak Rakpenthai
Sermsak Uatrongjit
Power system state and transmission line conductor temperature estimation
description © 1969-2012 IEEE. This paper presents a state estimation technique for three-phase power systems where not only bus voltage phasors but also the temperature of transmission line conductors is considered as states. Transmission line admittance parameters depending on line conductor and ambient temperature are approximated from the pre-computed data based on polynomial interpolations. Weather environment and heat-balance equations have been also included in the measurement functions in order to estimate the temperature of conductors. The technique for segmenting transmission lines is also applied for handling temperature variations along the lines. The estimation problem is then formulated as a constrained nonlinear optimization based on the weighted least-squares criterion. A solution is obtained by applying a predictor-corrector interior point algorithm. Simulation results on some three-phase power systems indicate that the proposed method yields estimations with a better accuracy.
format Journal
author Chawasak Rakpenthai
Sermsak Uatrongjit
author_facet Chawasak Rakpenthai
Sermsak Uatrongjit
author_sort Chawasak Rakpenthai
title Power system state and transmission line conductor temperature estimation
title_short Power system state and transmission line conductor temperature estimation
title_full Power system state and transmission line conductor temperature estimation
title_fullStr Power system state and transmission line conductor temperature estimation
title_full_unstemmed Power system state and transmission line conductor temperature estimation
title_sort power system state and transmission line conductor temperature estimation
publishDate 2018
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85018945558&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/46802
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