Under-reach correction in twin circuits without residual current input from the parallel line
Mutual coupling poses difficult problems witnessed during single phase to earth fault, in transmission line protection. In parallel lines on the same right of way, mutually coupled zero-sequence circuits cause error in the apparent impedance seen by the relay. This causes the distance relay at one e...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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2008
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| Online Access: | http://scholars.utp.edu.my/id/eprint/364/ http://scholars.utp.edu.my/id/eprint/364/1/paper.pdf |
| _version_ | 1848658966442147840 |
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| author | M.F.B., Abdullah R.N., Mukerjee |
| author_facet | M.F.B., Abdullah R.N., Mukerjee |
| author_sort | M.F.B., Abdullah |
| building | UTP Institutional Repository |
| collection | Online Access |
| description | Mutual coupling poses difficult problems witnessed during single phase to earth fault, in transmission line protection. In parallel lines on the same right of way, mutually coupled zero-sequence circuits cause error in the apparent impedance seen by the relay. This causes the distance relay at one end of the faulty line to over-reach while the one at the other end to under-reach. Incorrect sensing of the ground fault due to zero-sequence voltage inversion caused by mutually coupled zero-sequence network may lead to false trip of the neighbouring healthy line. The paper develops characteristic expressions for effective sequence impedances of twin circuit lines and presents a non-iterative microprocessor based algorithm for fault distance and under-reach estimation in real time, for under-reach correction in basic distance relaying scheme. The residual current measurement from the parallel circuit is not required for this purpose. © 2008 IEEE.
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| first_indexed | 2025-11-13T07:22:56Z |
| format | Article |
| id | oai:scholars.utp.edu.my:364 |
| institution | Universiti Teknologi Petronas |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-13T07:22:56Z |
| publishDate | 2008 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | oai:scholars.utp.edu.my:3642017-01-19T08:26:34Z http://scholars.utp.edu.my/id/eprint/364/ Under-reach correction in twin circuits without residual current input from the parallel line M.F.B., Abdullah R.N., Mukerjee TK Electrical engineering. Electronics Nuclear engineering Mutual coupling poses difficult problems witnessed during single phase to earth fault, in transmission line protection. In parallel lines on the same right of way, mutually coupled zero-sequence circuits cause error in the apparent impedance seen by the relay. This causes the distance relay at one end of the faulty line to over-reach while the one at the other end to under-reach. Incorrect sensing of the ground fault due to zero-sequence voltage inversion caused by mutually coupled zero-sequence network may lead to false trip of the neighbouring healthy line. The paper develops characteristic expressions for effective sequence impedances of twin circuit lines and presents a non-iterative microprocessor based algorithm for fault distance and under-reach estimation in real time, for under-reach correction in basic distance relaying scheme. The residual current measurement from the parallel circuit is not required for this purpose. © 2008 IEEE. 2008 Article NonPeerReviewed application/pdf en http://scholars.utp.edu.my/id/eprint/364/1/paper.pdf M.F.B., Abdullah and R.N., Mukerjee (2008) Under-reach correction in twin circuits without residual current input from the parallel line. IEEE Transactions on Power Delivery, 23 (3). pp. 1359-1365. ISSN 8858977 http://www.scopus.com/inward/record.url?eid=2-s2.0-47149102699&partnerID=40&md5=a7eee1b24228ca81e7745362af99603a 10.1109/TPWRD.2007.916227 10.1109/TPWRD.2007.916227 10.1109/TPWRD.2007.916227 |
| spellingShingle | TK Electrical engineering. Electronics Nuclear engineering M.F.B., Abdullah R.N., Mukerjee Under-reach correction in twin circuits without residual current input from the parallel line |
| title | Under-reach correction in twin circuits without residual current input from the parallel line
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| title_full | Under-reach correction in twin circuits without residual current input from the parallel line
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| title_fullStr | Under-reach correction in twin circuits without residual current input from the parallel line
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| title_full_unstemmed | Under-reach correction in twin circuits without residual current input from the parallel line
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| title_short | Under-reach correction in twin circuits without residual current input from the parallel line
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| title_sort | under-reach correction in twin circuits without residual current input from the parallel line |
| topic | TK Electrical engineering. Electronics Nuclear engineering |
| url | http://scholars.utp.edu.my/id/eprint/364/ http://scholars.utp.edu.my/id/eprint/364/ http://scholars.utp.edu.my/id/eprint/364/ http://scholars.utp.edu.my/id/eprint/364/1/paper.pdf |