Sensitivity analysis of a single phase to ground fault system in connection with high impedance faults: A case study
Most of High-impedance faults (HIFs) occur due to broken conductors falling on high-resistivity desert soil in United Arab Emirates remain undetected due to incredibly low fault currents and endanger lives. A reliable detection method is needed. A live line test conducted on a 11kV distribution line...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2020-01-01
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| Series: | Cogent Engineering |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/23311916.2020.1770916 |
| _version_ | 1797764093966286848 |
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| author | Perumal Velmurugan Adhir Baran Chattopadhayay |
| author_facet | Perumal Velmurugan Adhir Baran Chattopadhayay |
| author_sort | Perumal Velmurugan |
| collection | DOAJ |
| description | Most of High-impedance faults (HIFs) occur due to broken conductors falling on high-resistivity desert soil in United Arab Emirates remain undetected due to incredibly low fault currents and endanger lives. A reliable detection method is needed. A live line test conducted on a 11kV distribution line by switching to a remotely laid conductor did not result enough detectable fault currents. This motivated conducting a literature survey and researching for the reasons why the modern numerical protection relays could not detect such low current faults. Hence, a sensitivity analysis of a single-phase-to-ground system is carried out. Mathematical modelling for the sensitivity analysis is performed using differential calculus. Applying definition of sensitivity to a set of power system equations to analyze to provide guidance for detection of high impedance faults is entirely a new approach. This paper provides a comprehensive analysis of single phase to ground fault system by exhibiting profiles of fault currents, line, neutral, and MV bus voltages for a range of fault impedance. The sensitivity analysis results conclude that low-fault current signals should be collected from the neutral line of the distribution system instead of focusing on the line voltage, current, power and other parameters. |
| first_indexed | 2024-03-12T19:50:50Z |
| format | Article |
| id | doaj.art-2fb267b51004458fb1d2a5a48c2ab117 |
| institution | Directory Open Access Journal |
| issn | 2331-1916 |
| language | English |
| last_indexed | 2024-03-12T19:50:50Z |
| publishDate | 2020-01-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Cogent Engineering |
| spelling | doaj.art-2fb267b51004458fb1d2a5a48c2ab1172023-08-02T03:11:17ZengTaylor & Francis GroupCogent Engineering2331-19162020-01-017110.1080/23311916.2020.17709161770916Sensitivity analysis of a single phase to ground fault system in connection with high impedance faults: A case studyPerumal Velmurugan0Adhir Baran Chattopadhayay1TWINVEY Electric ConsultancyBITS-Pilani, Dubai CampusMost of High-impedance faults (HIFs) occur due to broken conductors falling on high-resistivity desert soil in United Arab Emirates remain undetected due to incredibly low fault currents and endanger lives. A reliable detection method is needed. A live line test conducted on a 11kV distribution line by switching to a remotely laid conductor did not result enough detectable fault currents. This motivated conducting a literature survey and researching for the reasons why the modern numerical protection relays could not detect such low current faults. Hence, a sensitivity analysis of a single-phase-to-ground system is carried out. Mathematical modelling for the sensitivity analysis is performed using differential calculus. Applying definition of sensitivity to a set of power system equations to analyze to provide guidance for detection of high impedance faults is entirely a new approach. This paper provides a comprehensive analysis of single phase to ground fault system by exhibiting profiles of fault currents, line, neutral, and MV bus voltages for a range of fault impedance. The sensitivity analysis results conclude that low-fault current signals should be collected from the neutral line of the distribution system instead of focusing on the line voltage, current, power and other parameters.http://dx.doi.org/10.1080/23311916.2020.1770916bus voltagescalculusdesert soil resistivityfallen conductorline voltagesneutral current and voltageprofiles of primary currents and voltagesreal system datasymmetrical componentssensitivity analysissequence impedanceszero sequence current |
| spellingShingle | Perumal Velmurugan Adhir Baran Chattopadhayay Sensitivity analysis of a single phase to ground fault system in connection with high impedance faults: A case study Cogent Engineering bus voltages calculus desert soil resistivity fallen conductor line voltages neutral current and voltage profiles of primary currents and voltages real system data symmetrical components sensitivity analysis sequence impedances zero sequence current |
| title | Sensitivity analysis of a single phase to ground fault system in connection with high impedance faults: A case study |
| title_full | Sensitivity analysis of a single phase to ground fault system in connection with high impedance faults: A case study |
| title_fullStr | Sensitivity analysis of a single phase to ground fault system in connection with high impedance faults: A case study |
| title_full_unstemmed | Sensitivity analysis of a single phase to ground fault system in connection with high impedance faults: A case study |
| title_short | Sensitivity analysis of a single phase to ground fault system in connection with high impedance faults: A case study |
| title_sort | sensitivity analysis of a single phase to ground fault system in connection with high impedance faults a case study |
| topic | bus voltages calculus desert soil resistivity fallen conductor line voltages neutral current and voltage profiles of primary currents and voltages real system data symmetrical components sensitivity analysis sequence impedances zero sequence current |
| url | http://dx.doi.org/10.1080/23311916.2020.1770916 |
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