| 提高发电机定子接地保护动作可靠性的措施 |
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| 引用本文： | 邓祖前. 提高发电机定子接地保护动作可靠性的措施[J]. 湖南电力, 2011, 31(4): 37-40,50. DOI: 10.3969/j.issn.1008-0198.2011.04.012 |
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| 作者姓名： | 邓祖前 |
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| 作者单位： | 广州恒运企业集团有限公司,广东广州,510730 |
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| 摘 要： | 某电厂210 MW汽轮发电机组带191 MW负荷运行,发电机定子接地三次谐波保护动作发信,基波零序电压变化较大.通过对采样数据的分析,否定了定子绕组单相接地的可能,考虑到基波零序电压整定较灵敏,退出了该保护的功能压板,避免了保护误动切机事故.并且从TV一次断线闭锁保护的缺点、保护原理的确定、变比修正系数的计算、TV一次...
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| 关 键 词： | 定子接地保护 采样数据 故障判断 三次谐波 可靠性 |
Measures on improving the ground protection action reliability of generator stator |
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| DENG Zu-qian. Measures on improving the ground protection action reliability of generator stator[J]. Hunan Electric Power, 2011, 31(4): 37-40,50. DOI: 10.3969/j.issn.1008-0198.2011.04.012 |
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| Authors: | DENG Zu-qian |
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| Affiliation: | DENG Zu-qian(Guangzhou Henyun Enterprises Holding Ltd.,Guangzhou 510730,China) |
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| Abstract: | Stator ground protection based on the third harmonic transimitted and zero-sequence voltage changed greatly when 210 MW gas-generator was working with 191 MW load.The analysis of sampled data indicated single-phase ground is impossible.Being considered of fundamental zero-sequence voltage sensitive setting,the faction plate of the protection exited to avoid cutting machine accident of the protection malfunction.Measures of improving the reliability of generator stator ground protection action was put forwar... |
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| Keywords: | stator ground protection sampled data failure judgment triple-harmonic reliability |
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