| 单母分段接线方式下母线故障的保护分析 |
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| 引用本文： | 李跃军.单母分段接线方式下母线故障的保护分析[J].科学之友,2011(19). |
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| 作者姓名： | 李跃军 |
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| 作者单位： | 太原供电分公司; |
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| 摘 要： | 通过介绍110 kV变电站单母分段接线方式及其备用电源自动投入逻辑,分析了没有母差保护情况下母线故障会导致全部负荷失电的后果,提出并分析了3种解决方案,得出分段开关保护没有可操作性,用进线保护闭锁备自投在实践中受变压器励磁涌流的影响可靠性差,母差保护是一种较为理想的解决方案。
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| 关 键 词： | 单母分段接线 备自投 母差保护 励磁涌流 |
Bus fault protection analysis under the connection mode of a single mother section |
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| Li Yuejun.Bus fault protection analysis under the connection mode of a single mother section[J].Friend of Science Amateurs,2011(19). |
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| Authors: | Li Yuejun |
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| Abstract: | This paper recommends the wiring mode of sectionalized single bus substation and the doings logic of the reserve power supply automatic connection device in 110 kV transformer.It will lose all power loads when there a breakdown in the bus if there is not bus differential current protection.This paper proposes and analyses three kinds of solutions.It Have no effectiveness to install additional relay protection on the connection switch;It has bad dependability to install additional relay protection on the pow... |
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| Keywords: | sectionalized single bus scheme reserve power supply automatic connection device bus differential current protection magnetizing in-rush current |
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