Assessment of seasonal static thermal ratings of overhead transmission conductors
Deterministic static thermal ratings of overhead transmission lines are usually conservative, causing underutilization of their potential capacity. Efforts to overcome this limitation led to the development of alternative rating strategies, based on probabilistic and dynamic methods. One such strate...
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ftczacademyscien:oai:asep.lib.cas.cz:CavUnEpca/0379805 2024-02-04T10:02:11+01:00 Assessment of seasonal static thermal ratings of overhead transmission conductors Heckenbergerová, J. (Jana) Musílek, P. Filimonenkov, K. 2011 https://doi.org/10.1109/PES.2011.6039393 http://hdl.handle.net/11104/0210679 eng eng doi:10.1109/PES.2011.6039393 urn:pissn: 1944-9925 urn:isbn: 978-1-4577-1001-8 http://hdl.handle.net/11104/0210679 info:eu-repo/semantics/restrictedAccess transmission line overhead conductor weather conditions thermal rating ampacity risk aging info:eu-repo/semantics/conferenceObject info:eu-repo/semantics/publishedVersion 2011 ftczacademyscien https://doi.org/10.1109/PES.2011.6039393 2024-01-09T17:21:21Z Deterministic static thermal ratings of overhead transmission lines are usually conservative, causing underutilization of their potential capacity. Efforts to overcome this limitation led to the development of alternative rating strategies, based on probabilistic and dynamic methods. One such strategy is the seasonal static thermal rating. It uses a probabilistic rating approach with explicit treatment of seasonal effects on conductor temperature. In this paper, we present several variants of seasonal ratings, and analyze their performance with respect to other rating approaches. Seasonal ratings use a set of predetermined probabilistic ratings that are engaged according to the season of year or time of day. By alternating among several ratings, transmission lines can be operated closer to their actual ampacity. In addition, seasonal ratings can reduce the risk of thermal overload, compared to the uniform probabilistic rating which remains constant at all times. Despite the risk reduction, and counter to the common belief, they still pose a significant risk of conductor thermal overload. Characteristics of several seasonal rating strategies are illustrated using a case study involving a power transmission line in Newfoundland, Canada. Simulation results show that seasonal ratings can provide a modest increase in transmission line throughput, compared to the basic probabilistic rating. However, they also confirm the high levels of residual risk. Conference Object Newfoundland The Czech Academy of Sciences: Publication Activity (ASEP) Canada 2011 IEEE Power and Energy Society General Meeting 1 8 |
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The Czech Academy of Sciences: Publication Activity (ASEP) |
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English |
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transmission line overhead conductor weather conditions thermal rating ampacity risk aging |
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transmission line overhead conductor weather conditions thermal rating ampacity risk aging Heckenbergerová, J. (Jana) Musílek, P. Filimonenkov, K. Assessment of seasonal static thermal ratings of overhead transmission conductors |
topic_facet |
transmission line overhead conductor weather conditions thermal rating ampacity risk aging |
description |
Deterministic static thermal ratings of overhead transmission lines are usually conservative, causing underutilization of their potential capacity. Efforts to overcome this limitation led to the development of alternative rating strategies, based on probabilistic and dynamic methods. One such strategy is the seasonal static thermal rating. It uses a probabilistic rating approach with explicit treatment of seasonal effects on conductor temperature. In this paper, we present several variants of seasonal ratings, and analyze their performance with respect to other rating approaches. Seasonal ratings use a set of predetermined probabilistic ratings that are engaged according to the season of year or time of day. By alternating among several ratings, transmission lines can be operated closer to their actual ampacity. In addition, seasonal ratings can reduce the risk of thermal overload, compared to the uniform probabilistic rating which remains constant at all times. Despite the risk reduction, and counter to the common belief, they still pose a significant risk of conductor thermal overload. Characteristics of several seasonal rating strategies are illustrated using a case study involving a power transmission line in Newfoundland, Canada. Simulation results show that seasonal ratings can provide a modest increase in transmission line throughput, compared to the basic probabilistic rating. However, they also confirm the high levels of residual risk. |
format |
Conference Object |
author |
Heckenbergerová, J. (Jana) Musílek, P. Filimonenkov, K. |
author_facet |
Heckenbergerová, J. (Jana) Musílek, P. Filimonenkov, K. |
author_sort |
Heckenbergerová, J. (Jana) |
title |
Assessment of seasonal static thermal ratings of overhead transmission conductors |
title_short |
Assessment of seasonal static thermal ratings of overhead transmission conductors |
title_full |
Assessment of seasonal static thermal ratings of overhead transmission conductors |
title_fullStr |
Assessment of seasonal static thermal ratings of overhead transmission conductors |
title_full_unstemmed |
Assessment of seasonal static thermal ratings of overhead transmission conductors |
title_sort |
assessment of seasonal static thermal ratings of overhead transmission conductors |
publishDate |
2011 |
url |
https://doi.org/10.1109/PES.2011.6039393 http://hdl.handle.net/11104/0210679 |
geographic |
Canada |
geographic_facet |
Canada |
genre |
Newfoundland |
genre_facet |
Newfoundland |
op_relation |
doi:10.1109/PES.2011.6039393 urn:pissn: 1944-9925 urn:isbn: 978-1-4577-1001-8 http://hdl.handle.net/11104/0210679 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1109/PES.2011.6039393 |
container_title |
2011 IEEE Power and Energy Society General Meeting |
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8 |
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1789968632850153472 |