| 中性点运行方式对发电机3U_o保护的影响 |
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| 引用本文： | 李晋民,王建杰.中性点运行方式对发电机3U_o保护的影响[J].电力学报,1998,13(1):9-11. |
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| 作者姓名： | 李晋民 王建杰 |
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| 作者单位： | 太原电力高等专科学校!030013(李晋民)，神头一电厂(王建杰)，太原电力高等专科学校(王志明) |
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| 摘 要： | 分析了中性点不同运行方式下单相接地故障时发电机3Uo保护的动作行为，推出了机端接地故障时保护所允许过渡电阻值的计算公式。结果表明，消弧线圈接地方式可以极大地提高3Uo保护的灵敏度。
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| 关 键 词： | 中性点 消弧线圈 零序电压 保护 |
Research of The Neutral Earthing Scheme Affecting the Zero-sequence Voltages Protection of Generator |
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| Li Jinmin, Wang Jianjie.Research of The Neutral Earthing Scheme Affecting the Zero-sequence Voltages Protection of Generator[J].Journal of Electric Power,1998,13(1):9-11. |
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| Authors: | Li Jinmin Wang Jianjie |
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| Affiliation: | Li Jinmin; Wang Jianjie(Department of Electrical Engineering) (Shentou 1 st Power Plant )Wang Zhiming(Department of Electrical Engineering) |
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| Abstract: | This paper analyses the behaviour of the zero-sequellce voltages protection of generator in the case of the different neutral earthing scheme when single-phase-to-ground resistance fault takes place. The formulas of the line ends faults resistance voluse allowed by the relays are derived. The results show that the sensitivity of the zero-seqence voltages protection can be greatly increased by the mode of the arc suppressing coil earthing. |
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| Keywords: | neutral point arc suppressing coil zero-sequence voltages protection |
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