Research of characteristics of transient pulse in coal mine resonant grounding system
By means of deduction of zero-sequence current expressions when single-phase grounding fault occurs in single substation mode and multi-substation mode of coal mine resonant grounding system, polarity relationship between transient pulse of fault line and normal line, and relationships among amplitu...
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| Format: | Article |
| Language: | zho |
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Editorial Department of Industry and Mine Automation
2014-07-01
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| Series: | Gong-kuang zidonghua |
| Subjects: | |
| Online Access: | http://www.gkzdh.cn/article/doi/10.13272/j.issn.1671-251x.2014.07.017 |
| _version_ | 1797868704818528256 |
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| author | WANG Jinhong |
| author_facet | WANG Jinhong |
| author_sort | WANG Jinhong |
| collection | DOAJ |
| description | By means of deduction of zero-sequence current expressions when single-phase grounding fault occurs in single substation mode and multi-substation mode of coal mine resonant grounding system, polarity relationship between transient pulse of fault line and normal line, and relationships among amplitude or width of transient pulse, grounding resistance, shunt capacitance and fault time were analyzed, and corresponding expressions were given. Polarity of transient pulse of fault line is opposite to the ones of normal lines, and amplitude of the transient pulse of fault line is the largest among all lines. The amplitude of transient pulse at the fault time is inversely proportional to grounding resistance and proportional to sin of angle of fault phase. All the normal lines have the same width of transient pulse, which is smaller than the one of the fault line, and the width of transient pulse is proportional to the grounding resistance. The Matlab/Simulink simulation proves correctness of above theoretical conclusions. |
| first_indexed | 2024-04-10T00:00:04Z |
| format | Article |
| id | doaj.art-71dbeaa14830442780245c27adaacb20 |
| institution | Directory Open Access Journal |
| issn | 1671-251X |
| language | zho |
| last_indexed | 2024-04-10T00:00:04Z |
| publishDate | 2014-07-01 |
| publisher | Editorial Department of Industry and Mine Automation |
| record_format | Article |
| series | Gong-kuang zidonghua |
| spelling | doaj.art-71dbeaa14830442780245c27adaacb202023-03-17T01:51:31ZzhoEditorial Department of Industry and Mine AutomationGong-kuang zidonghua1671-251X2014-07-01407616710.13272/j.issn.1671-251x.2014.07.017Research of characteristics of transient pulse in coal mine resonant grounding systemWANG JinhongBy means of deduction of zero-sequence current expressions when single-phase grounding fault occurs in single substation mode and multi-substation mode of coal mine resonant grounding system, polarity relationship between transient pulse of fault line and normal line, and relationships among amplitude or width of transient pulse, grounding resistance, shunt capacitance and fault time were analyzed, and corresponding expressions were given. Polarity of transient pulse of fault line is opposite to the ones of normal lines, and amplitude of the transient pulse of fault line is the largest among all lines. The amplitude of transient pulse at the fault time is inversely proportional to grounding resistance and proportional to sin of angle of fault phase. All the normal lines have the same width of transient pulse, which is smaller than the one of the fault line, and the width of transient pulse is proportional to the grounding resistance. The Matlab/Simulink simulation proves correctness of above theoretical conclusions.http://www.gkzdh.cn/article/doi/10.13272/j.issn.1671-251x.2014.07.017power supply of coal minesubstationresonant grounding systemsingle-phase grounding faulttransient pulsepulse polarity |
| spellingShingle | WANG Jinhong Research of characteristics of transient pulse in coal mine resonant grounding system Gong-kuang zidonghua power supply of coal mine substation resonant grounding system single-phase grounding fault transient pulse pulse polarity |
| title | Research of characteristics of transient pulse in coal mine resonant grounding system |
| title_full | Research of characteristics of transient pulse in coal mine resonant grounding system |
| title_fullStr | Research of characteristics of transient pulse in coal mine resonant grounding system |
| title_full_unstemmed | Research of characteristics of transient pulse in coal mine resonant grounding system |
| title_short | Research of characteristics of transient pulse in coal mine resonant grounding system |
| title_sort | research of characteristics of transient pulse in coal mine resonant grounding system |
| topic | power supply of coal mine substation resonant grounding system single-phase grounding fault transient pulse pulse polarity |
| url | http://www.gkzdh.cn/article/doi/10.13272/j.issn.1671-251x.2014.07.017 |
| work_keys_str_mv | AT wangjinhong researchofcharacteristicsoftransientpulseincoalmineresonantgroundingsystem |