| 发电机定子接地保护越级动作跳闸原因分析 |
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| 引用本文： | 熊传良. 发电机定子接地保护越级动作跳闸原因分析[J]. 电力设备, 2007, 8(8): 68-70 |
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| 作者姓名： | 熊传良 |
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| 作者单位： | 华能海南发电股份有限公司南山电厂,海南省,三亚市,572000 |
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| 摘 要： | 分析了2006年9月26日海南南山电厂1号发电机定子接地保护越级动作的原因是保护装置零序电流最小整定值过大,不能满足在较小运行模式厂用电系统下的动作要求。提出了相应的改进办法,提高了电厂运行的可靠性。
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| 关 键 词： | 中性点不接地系统 零序电流保护 单相接地 |
| 修稿时间： | 2007-06-05 |
Case Study of Overstep Tripping for Grounding Protection of Generator Stator |
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| XIONG Chuan-liang. Case Study of Overstep Tripping for Grounding Protection of Generator Stator[J]. Electrical Equipment, 2007, 8(8): 68-70 |
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| Authors: | XIONG Chuan-liang |
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| Affiliation: | Nanshan Power Plant of Huaneng Hainan Power Generation Inc., Sanya 572000,China |
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| Abstract: | The overstep tripping of grounding protection of No.1 generator stator in Nanshan Power Plant occurred on Sept. 26th. 2006. The reason was analyzed,which was overlarge value for minimum setting of zero sequence current and can not satisfy the operation requirement of service power system in minimum operation mode. The corresponding improvement method was put forward,which raised the operation reliability of power plant. |
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| Keywords: | ungrounded neutral system zero sequence current protection single-phase grounding |
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