| 基于GIS设备的母差保护接线方式研究 |
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| 引用本文： | 翁利国.基于GIS设备的母差保护接线方式研究[J].浙江电力,2011,30(2):21-23. |
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| 作者姓名： | 翁利国 |
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| 作者单位： | 萧山供电局,杭州,311200 |
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| 摘 要： | 分析了220kV变电站常用母差保护存在保护死区的原因。结合GIS设备一般在断路器两侧同时安装电流互感器的特点，提出了母差保护接线的改进方案，有效防止在保护死区内发生故障时引起的全站失电．以及母联电流回路断线时引起的保护选择性失去，从而提高了供电可靠性。
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| 关 键 词： | GIS设备 母差保护 死区 接线方式 改进 |
Research on Mode of Connection for Busbar Differential Protection Based on GIS Equipment |
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| WENG Li-guo.Research on Mode of Connection for Busbar Differential Protection Based on GIS Equipment[J].Zhejiang Electric Power,2011,30(2):21-23. |
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| Authors: | WENG Li-guo |
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| Affiliation: | WENG Li-guo(Xiaoshan Power Supply Bureau,Hangzhou 311200,China) |
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| Abstract: | The paper analyzes the reasons for the protection dead zone of common busbar in the 220 kV substation,and proposes the improvement scheme for busbar differential protection connection according to the characteristic of gas insulated switchgear(GIS) equipment for which the current transformers are generally installed on both sides of the breaker in order to prevent power blackout due to the fault in protection dead zone,and the selective loss of protection because of broken bus tie current loop.And the relia... |
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| Keywords: | GIS equipment busbar differential protection dead zone mode of connection improvement |
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