| 500kV变电站220kV母差保护双重化改造 |
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| 引用本文： | 郭祝平,邹阳,王炼.500kV变电站220kV母差保护双重化改造[J].电力系统保护与控制,2007,35(10):72-75. |
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| 作者姓名： | 郭祝平 邹阳 王炼 |
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| 作者单位： | 深圳供电局 广东深圳518001 |
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| 摘 要： | 介绍一个500kV变电站进行220kV母差双重化改造工程的概况,阐述了在改造过程中,根据施工环节,详细分析现场工作环境,制定相关的施工流程,严格控制危险点,在保证旧母差保护正常运行的基础上,安全地接入了新母差保护装置和断路器失灵保护装置,同时进行了回路优化改造,实现了220kV母差保护双重化配置,有效提高了该变电站母差保护和断路器失灵保护动作的可靠性.
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| 关 键 词： | 母差双重化 失灵保护 危险点 回路改造 可靠性 |
| 文章编号： | 1003-4897（2007）10-0072-04 |
| 修稿时间： | 2006-09-252006-11-19 |
Improvement of duplicating 220 kV bus differential protection in 500 kV substation |
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| GUO Zhu-ping, ZOU Yang, WANG lian.Improvement of duplicating 220 kV bus differential protection in 500 kV substation[J].Power System Protection and Control,2007,35(10):72-75. |
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| Authors: | GUO Zhu-ping ZOU Yang WANG lian |
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| Affiliation: | Shenzhen Power Supply Company, Shenzhen 518001, China |
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| Abstract: | This paper introduces a general situation of a duplex differential protection of 220 kV bus in 500 kV substation.It describes the methods which,according to the construction details and by analyzing the spot working environment and proposing relevant construction flows,connect the new bus differential protection and breaker failure protection without the outage of the former bus differential protection.The dangerous points are under control and circuit modification is optimized.It realizes the duplex configurations of bus differential protection of 220 kV bus and effectively improves the operation reliability of bus differential protection and breaker failure protection in that substation. |
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| Keywords: | duplex bus differential protection breaker failure protection dangerous points circuit modification reliability |
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