A zero-crossing point prediction algorithm of short-circuit current for mine-used phase-controlled switching
The existing zero-crossing point prediction algorithms of short-circuit current have some problems, such as complex calculation and big error. For three-phase short-circuit fault of coal mine power supply system, a zero-crossing point prediction algorithm of short-circuit current for mine-used phase...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Editorial Department of Industry and Mine Automation
2020-06-01
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| Series: | Gong-kuang zidonghua |
| Subjects: | |
| Online Access: | http://www.gkzdh.cn/article/doi/10.13272/j.issn.1671-251x.2020030074 |
| _version_ | 1831582585928548352 |
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| author | YU Shuohang RONG Xiang YANG Fan WEI Lipeng |
| author_facet | YU Shuohang RONG Xiang YANG Fan WEI Lipeng |
| author_sort | YU Shuohang |
| collection | DOAJ |
| description | The existing zero-crossing point prediction algorithms of short-circuit current have some problems, such as complex calculation and big error. For three-phase short-circuit fault of coal mine power supply system, a zero-crossing point prediction algorithm of short-circuit current for mine-used phase-controlled switching was proposed. In the algorithm, DC component of short-circuit current is calculated by summing short-circuit current sampling data in one fundamental wave period after occurrence of three-phase short-circuit fault, which can reduce calculation amount and eliminate harmonic interference. AC component of short-circuit current is obtained by subtracting the DC component from the sampling data. Using periodicity of the AC component, the AC component at any sampling time after one fundamental wave period can be predicted. By adding the DC and AC components at any sampling time after one fundamental wave period, short-circuit current at any sampling time can be reconstructed to predict zero-crossing point of short-circuit current. The simulation and experimental results verify accuracy of the algorithm. |
| first_indexed | 2024-12-17T20:27:11Z |
| format | Article |
| id | doaj.art-3b1b12a7a4564092b939614e2b6cd60e |
| institution | Directory Open Access Journal |
| issn | 1671-251X |
| language | zho |
| last_indexed | 2024-12-17T20:27:11Z |
| publishDate | 2020-06-01 |
| publisher | Editorial Department of Industry and Mine Automation |
| record_format | Article |
| series | Gong-kuang zidonghua |
| spelling | doaj.art-3b1b12a7a4564092b939614e2b6cd60e2022-12-21T21:33:43ZzhoEditorial Department of Industry and Mine AutomationGong-kuang zidonghua1671-251X2020-06-0146610310710.13272/j.issn.1671-251x.2020030074A zero-crossing point prediction algorithm of short-circuit current for mine-used phase-controlled switchingYU ShuohangRONG XiangYANG FanWEI LipengThe existing zero-crossing point prediction algorithms of short-circuit current have some problems, such as complex calculation and big error. For three-phase short-circuit fault of coal mine power supply system, a zero-crossing point prediction algorithm of short-circuit current for mine-used phase-controlled switching was proposed. In the algorithm, DC component of short-circuit current is calculated by summing short-circuit current sampling data in one fundamental wave period after occurrence of three-phase short-circuit fault, which can reduce calculation amount and eliminate harmonic interference. AC component of short-circuit current is obtained by subtracting the DC component from the sampling data. Using periodicity of the AC component, the AC component at any sampling time after one fundamental wave period can be predicted. By adding the DC and AC components at any sampling time after one fundamental wave period, short-circuit current at any sampling time can be reconstructed to predict zero-crossing point of short-circuit current. The simulation and experimental results verify accuracy of the algorithm.http://www.gkzdh.cn/article/doi/10.13272/j.issn.1671-251x.2020030074coal mine power supplyphase-controlled switchingzero-crossing point predictionshort-circuit faultshort-circuit current |
| spellingShingle | YU Shuohang RONG Xiang YANG Fan WEI Lipeng A zero-crossing point prediction algorithm of short-circuit current for mine-used phase-controlled switching Gong-kuang zidonghua coal mine power supply phase-controlled switching zero-crossing point prediction short-circuit fault short-circuit current |
| title | A zero-crossing point prediction algorithm of short-circuit current for mine-used phase-controlled switching |
| title_full | A zero-crossing point prediction algorithm of short-circuit current for mine-used phase-controlled switching |
| title_fullStr | A zero-crossing point prediction algorithm of short-circuit current for mine-used phase-controlled switching |
| title_full_unstemmed | A zero-crossing point prediction algorithm of short-circuit current for mine-used phase-controlled switching |
| title_short | A zero-crossing point prediction algorithm of short-circuit current for mine-used phase-controlled switching |
| title_sort | zero crossing point prediction algorithm of short circuit current for mine used phase controlled switching |
| topic | coal mine power supply phase-controlled switching zero-crossing point prediction short-circuit fault short-circuit current |
| url | http://www.gkzdh.cn/article/doi/10.13272/j.issn.1671-251x.2020030074 |
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