| 引用本文: | 陈昊,邓广静,王玉荣,孟玮.电抗器间隔断路器后置式接线所引起二次问题研究[J].电力系统保护与控制,2014,42(18):122-126.[点击复制] |
| CHEN Hao,DENG Guang-jing,WANG Yu-rong,MENG Wei.Research on the secondary side problem caused by breaker rear-wiring pattern in reactor interval[J].Power System Protection and Control,2014,42(18):122-126[点击复制] |
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| 摘要: |
| 500 kV变电站35 kV侧接线方式有多种，投运较早的500 kV变电站35 kV电抗器间隔常采用断路器后置式接线方式。这种接线方式虽在一定程度上节省了成本，但同时造成了二次上的一些问题。结合华东地区500 kV某变电站一起35 kV电抗器故障实例，分析了由于断路器后置式接线方式所引起的二次问题，包括故障相判别错误、相邻电抗器间隔低电流保护误动、保护持续动作不返回。最后针对上述问题提出了相应的应对措施。 |
| 关键词: 电抗器 断路器后置式 低电流保护 选相逻辑 |
| DOI： |
| 投稿时间：2013-12-09修订日期：2014-03-06 |
| 基金项目: |
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| Research on the secondary side problem caused by breaker rear-wiring pattern in reactor interval |
| CHEN Hao,DENG Guang-jing,WANG Yu-rong,MENG Wei |
| (Jiangsu Electric Power Maintenance Branch Company, Nanjing 210000, China; School of Electrical Engineering, Southeast University, Nanjing 210096, China;Jiangsu Power Design Institute, Nanjing 211012, China) |
| Abstract: |
| Several types of wirings at the 35 kV side are carried out in the practical 500 kV substations. Breaker rear-wiring is often adopted in the 35 kV reactors intervals of 500 kV substation which was put into operation earlier. This type of wiring can save cost to some degree. However, it can cause secondary side problems. Based on a practical instance of 35 kV reactor failure in a 500 kV substation in East China, the secondary side problems, including failure of fault phase selection, misoperation of undercurrent protection and no-returning after protection operation, caused by the breaker rear-wiring are analyzed. Finally, the corresponding countermeasures are provided. |
| Key words: reactor breaker rear-wiring undercurrent protection fault phase selection logic |
