| 6台主变压器同时跳闸的事故分析及杜绝此类事故的有效措施 |
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| 引用本文： | 周国良. 6台主变压器同时跳闸的事故分析及杜绝此类事故的有效措施[J]. 电力设备, 2008, 9(12) |
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| 作者姓名： | 周国良 |
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| 作者单位： | 福建省古田溪水力发电厂,福建省古田县,352258 |
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| 摘 要： | 某大型水电厂因高压母线TV二次线圈安全接地线被误断开,致使高压中性点未接地的6台主压器的零序过电压保护动作,造成了6台主变压器同时跳闸的重大事故。文章分析了事故原因,并提出了防止此类事故再发生的有效措施。
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| 关 键 词： | 变压器 TV二次安全接地线 耦合电容 高电压 继电保护 |
Accident Analysis on Tripping Operation of 6 Main Transformers at the Same Time and Its Effective Measures to Stop This Kind of Accident |
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| ZHOU Guo-liang. Accident Analysis on Tripping Operation of 6 Main Transformers at the Same Time and Its Effective Measures to Stop This Kind of Accident[J]. Electrical Equipment, 2008, 9(12) |
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| Authors: | ZHOU Guo-liang |
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| Affiliation: | ZHOU Guo-liang(Fujian Gutionxi Hydropower Plant; Gutian 352258; China); |
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| Abstract: | The grave accident of tripping operation of 6 main transformers at the same time occurred in a large scale hydropower plant,because of breaking accidentally secondary safe grounding wire of HV bus TV,which caused the miss-operation of zero sequence over-voltage protection in 6 main transformers of without the high voltage neutral grounding.The paper analyzed the accident reason,and put forward the effective measures to prevent this kind of accident occurred again. |
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| Keywords: | transformer secondary safe grounding wire coupling capacity high voltage relay protection |
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