Research on eigenparameters and detection methods for single‐phase‐to‐ground faults in non‐effectively grounded distribution systems
Abstract Non‐effectively grounded power distribution systems (NGDS) are widely used in China and other countries. However, over a long time, single‐phase‐to‐ground faults (SGF) have been misjudged or omitted by the monitoring system, threatening the security of the power supply system and human safe...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Wiley
2023-09-01
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| Series: | IET Cyber-Physical Systems |
| Subjects: | |
| Online Access: | https://doi.org/10.1049/cps2.12055 |
| _version_ | 1797689958984581120 |
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| author | Wanxing Sheng Xiaohui Song |
| author_facet | Wanxing Sheng Xiaohui Song |
| author_sort | Wanxing Sheng |
| collection | DOAJ |
| description | Abstract Non‐effectively grounded power distribution systems (NGDS) are widely used in China and other countries. However, over a long time, single‐phase‐to‐ground faults (SGF) have been misjudged or omitted by the monitoring system, threatening the security of the power supply system and human safety. Based on the reason analysis for the omitted and misjudged SGFs in NGDS, the concept of NGDS fault eigenparameters to correctly reflect fault characteristics and a method of SGF detection based on fault eigenparameters are proposed. Then, the detection mechanism of phase voltage and fault current resistive elements for SGF is revealed. The variation characteristics of typical fault parameters changing with distribution system scale (parameter) and fault transition resistance, such as residual voltage and Zero‐sequence current (iA‐iO), are analysed. The eigenparameters of SGF in certain NGDS with specific scales/parameters are also proposed, which can correctly reflect the fault characteristics under different transition resistances. |
| first_indexed | 2024-03-12T01:52:45Z |
| format | Article |
| id | doaj.art-e3bf272519b340029a957c519ba39c11 |
| institution | Directory Open Access Journal |
| issn | 2398-3396 |
| language | English |
| last_indexed | 2024-03-12T01:52:45Z |
| publishDate | 2023-09-01 |
| publisher | Wiley |
| record_format | Article |
| series | IET Cyber-Physical Systems |
| spelling | doaj.art-e3bf272519b340029a957c519ba39c112023-09-08T09:04:20ZengWileyIET Cyber-Physical Systems2398-33962023-09-018320521710.1049/cps2.12055Research on eigenparameters and detection methods for single‐phase‐to‐ground faults in non‐effectively grounded distribution systemsWanxing Sheng0Xiaohui Song1China Electric Power Research Institute Beijing ChinaChina Electric Power Research Institute Beijing ChinaAbstract Non‐effectively grounded power distribution systems (NGDS) are widely used in China and other countries. However, over a long time, single‐phase‐to‐ground faults (SGF) have been misjudged or omitted by the monitoring system, threatening the security of the power supply system and human safety. Based on the reason analysis for the omitted and misjudged SGFs in NGDS, the concept of NGDS fault eigenparameters to correctly reflect fault characteristics and a method of SGF detection based on fault eigenparameters are proposed. Then, the detection mechanism of phase voltage and fault current resistive elements for SGF is revealed. The variation characteristics of typical fault parameters changing with distribution system scale (parameter) and fault transition resistance, such as residual voltage and Zero‐sequence current (iA‐iO), are analysed. The eigenparameters of SGF in certain NGDS with specific scales/parameters are also proposed, which can correctly reflect the fault characteristics under different transition resistances.https://doi.org/10.1049/cps2.12055distribution networksfault diagnosispower distribution controlpower distribution reliability |
| spellingShingle | Wanxing Sheng Xiaohui Song Research on eigenparameters and detection methods for single‐phase‐to‐ground faults in non‐effectively grounded distribution systems IET Cyber-Physical Systems distribution networks fault diagnosis power distribution control power distribution reliability |
| title | Research on eigenparameters and detection methods for single‐phase‐to‐ground faults in non‐effectively grounded distribution systems |
| title_full | Research on eigenparameters and detection methods for single‐phase‐to‐ground faults in non‐effectively grounded distribution systems |
| title_fullStr | Research on eigenparameters and detection methods for single‐phase‐to‐ground faults in non‐effectively grounded distribution systems |
| title_full_unstemmed | Research on eigenparameters and detection methods for single‐phase‐to‐ground faults in non‐effectively grounded distribution systems |
| title_short | Research on eigenparameters and detection methods for single‐phase‐to‐ground faults in non‐effectively grounded distribution systems |
| title_sort | research on eigenparameters and detection methods for single phase to ground faults in non effectively grounded distribution systems |
| topic | distribution networks fault diagnosis power distribution control power distribution reliability |
| url | https://doi.org/10.1049/cps2.12055 |
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