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| 摘要: |
| 二滩电站采用的ＡＢＢ公司制造的新型标识制动不完全纵差保护有技术性能上的若干优点，但是也存在不容忽视的原理性缺陷。通过对三峡电站１号发电机各种内部短路的详尽计算分析，发现有少量同相不同支路间发生匝间短路时，新型标识制动不完全纵差保护将拒动。介绍这种拒动情况，阐述其机量，并提出改进意见。 |
| 关键词: 标积制动 不完全纵差保护 发电机 三峡电站 |
| DOI： |
| 分类号:TV734.2 TM772 |
| 基金项目: |
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| Recent Progress of New Scalar Product Restrained Incomplete- Differential Protection for Three Gorge Power Plant |
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WANG Wei jian GUI Lin WANG Xiang heng
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| Abstract: |
| The new scalar product restrained incomplete differential protection of ABB has been adopted in Ertan power plant.It has several merits of technical performance,but also has a drawback in principle,which shouldn't be ignored.Detailed calculation and analysis have been made for NO.1 generator of Three Gorge Power Plant with regard to all inner S/Cs.When inter branch S/C occurs within same phase,new scalar product restrained incomplete differential protection will be non operative on a few occasions.This article has clarified the mechanism of the drawback mentioned above,and proposed some suggestions for improvement. |
| Key words: scalar product restrained,incomplete differential protection,inter branch short circuit |
