A line selection method for single phase ground fault in coal mine power supply system based on wavelet packet
In view of problems of low accuracy and poor reliability of line selection methods for single phase ground fault in existing coal mine power supply system, a line selection method for single phase ground fault in coal mine power supply system based on wavelet packet was proposed. At first, transient...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | zho |
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Editorial Department of Industry and Mine Automation
2018-02-01
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| Series: | Gong-kuang zidonghua |
| Subjects: | |
| Online Access: | http://www.gkzdh.cn/article/doi/10.13272/j.issn.1671-251x.2017050003 |
| _version_ | 1797868901824987136 |
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| author | LUO Chao GENG Pulong QU Bingni SONG Jiancheng LIU Jucai DU Zhili YUAN Leiming |
| author_facet | LUO Chao GENG Pulong QU Bingni SONG Jiancheng LIU Jucai DU Zhili YUAN Leiming |
| author_sort | LUO Chao |
| collection | DOAJ |
| description | In view of problems of low accuracy and poor reliability of line selection methods for single phase ground fault in existing coal mine power supply system, a line selection method for single phase ground fault in coal mine power supply system based on wavelet packet was proposed. At first, transient zero modal current of each line is decomposed by wavelet packet, the lowest frequency band containing steady power frequency is eliminated, and sum of wavelet packet energy of each frequency band is calculated and sorted. And then, characteristic frequency band of each line is selected based on principle of the maximum energy, the line with opposite polarity is identified as fault line by comparing polarities of the modulus maximum of the wavelet packets decomposition coefficients of characteristic frequency band of lines. The double criteria for fault line selection of single phase ground fault can be formed by the different characteristics of transient zero modal currents between fault line and non-fault line, which overcomes the problem that single criteria may not select fault line correctly. The simulation experiments results prove correctness and effectiveness of the method. |
| first_indexed | 2024-04-10T00:04:12Z |
| format | Article |
| id | doaj.art-2e6481d06c824a8bb8b582d36ef8de20 |
| institution | Directory Open Access Journal |
| issn | 1671-251X |
| language | zho |
| last_indexed | 2024-04-10T00:04:12Z |
| publishDate | 2018-02-01 |
| publisher | Editorial Department of Industry and Mine Automation |
| record_format | Article |
| series | Gong-kuang zidonghua |
| spelling | doaj.art-2e6481d06c824a8bb8b582d36ef8de202023-03-17T01:20:08ZzhoEditorial Department of Industry and Mine AutomationGong-kuang zidonghua1671-251X2018-02-01442687410.13272/j.issn.1671-251x.2017050003A line selection method for single phase ground fault in coal mine power supply system based on wavelet packetLUO ChaoGENG PulongQU BingniSONG Jiancheng0LIU JucaiDU ZhiliYUAN LeimingTechnology, Taiyuan University of Technology, Taiyuan 030024, China；2. Shanxi Key Laboratory of Mining Electrical Equipment and Intelligent Control, Taiyuan University of Technology, Taiyuan 030024, China； 3.Jincheng Anthracite Mining Group, Jincheng 048006, China；4.Shanxi Lingzhida Coal Co., Ltd., Changzhi 046606, ChinaIn view of problems of low accuracy and poor reliability of line selection methods for single phase ground fault in existing coal mine power supply system, a line selection method for single phase ground fault in coal mine power supply system based on wavelet packet was proposed. At first, transient zero modal current of each line is decomposed by wavelet packet, the lowest frequency band containing steady power frequency is eliminated, and sum of wavelet packet energy of each frequency band is calculated and sorted. And then, characteristic frequency band of each line is selected based on principle of the maximum energy, the line with opposite polarity is identified as fault line by comparing polarities of the modulus maximum of the wavelet packets decomposition coefficients of characteristic frequency band of lines. The double criteria for fault line selection of single phase ground fault can be formed by the different characteristics of transient zero modal currents between fault line and non-fault line, which overcomes the problem that single criteria may not select fault line correctly. The simulation experiments results prove correctness and effectiveness of the method.http://www.gkzdh.cn/article/doi/10.13272/j.issn.1671-251x.2017050003mine power supplysingle phase ground faultfault line selectiontransient zero model currentwavelet packet energycharacteristic frequency band |
| spellingShingle | LUO Chao GENG Pulong QU Bingni SONG Jiancheng LIU Jucai DU Zhili YUAN Leiming A line selection method for single phase ground fault in coal mine power supply system based on wavelet packet Gong-kuang zidonghua mine power supply single phase ground fault fault line selection transient zero model current wavelet packet energy characteristic frequency band |
| title | A line selection method for single phase ground fault in coal mine power supply system based on wavelet packet |
| title_full | A line selection method for single phase ground fault in coal mine power supply system based on wavelet packet |
| title_fullStr | A line selection method for single phase ground fault in coal mine power supply system based on wavelet packet |
| title_full_unstemmed | A line selection method for single phase ground fault in coal mine power supply system based on wavelet packet |
| title_short | A line selection method for single phase ground fault in coal mine power supply system based on wavelet packet |
| title_sort | line selection method for single phase ground fault in coal mine power supply system based on wavelet packet |
| topic | mine power supply single phase ground fault fault line selection transient zero model current wavelet packet energy characteristic frequency band |
| url | http://www.gkzdh.cn/article/doi/10.13272/j.issn.1671-251x.2017050003 |
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