| 变电站二次设备的接地施工方法及改进 |
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| 引用本文： | 刘永兴. 变电站二次设备的接地施工方法及改进[J]. 华北电力技术, 2008, 0(10) |
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| 作者姓名： | 刘永兴 |
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| 作者单位： | 恒光电力建设有限责任公司,浙江嘉兴,314001 |
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| 摘 要： | 介绍了二次设备及电缆的不同接地种类和接地要求,结合在变电站施工中执行的电力系统反事故措施,重点分析了变电站在不同电磁耦合方式下二次电缆的抗干扰接地措施,指出了二次电缆屏蔽层通过专用接地铜排两点接地的施工方法,以及防止大地网电流烧毁二次电缆,屏蔽层一端在开关场经接地电阻接地的改进方法.
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| 关 键 词： | 二次设备 接地 二次电缆 屏蔽层 |
Construction Methods and Improvements of Earth-grounding of Secondary Equipment in Substation |
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| Liu Yong-xing. Construction Methods and Improvements of Earth-grounding of Secondary Equipment in Substation[J]. North China Electric Power, 2008, 0(10) |
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| Authors: | Liu Yong-xing |
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| Abstract: | Different kind of grounding and requirements for secondary equipment and cable were introduced.Combined with preventive measures in substation construction,anti-interference grounding methods of secondary cable under different electromagnetic coupling in substation were analyzed.Grounding construction method of secondary cable shield through specific ground copper bar was put forward.In order to avoid burning of secondary cable because of big grounding grid current,one end of cable shield was earthed through grounding resistance for improvement. |
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| Keywords: | secondary equipment earth-grounding secondary cable shield |
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