| 低压零序保护装设探讨 |
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| 引用本文： | 王亮,张庆伟.低压零序保护装设探讨[J].贵州电力技术,2014(11):75-76. |
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| 作者姓名： | 王亮 张庆伟 |
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| 作者单位： | 贵阳供电局,贵州贵阳550002 |
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| 摘 要： | 针对变电站站用变低压零序保护的零序CT安装位置不规范引起的保护误动作展开分析探讨，通过对故障时TN—C—S系统和局部TT系统故障电流通路的分析，总结出零序CT最优安装位置，保证在多种故障形式时，低压零序过流保护均能正确动作。
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| 关 键 词： | 站用变 零序过流 零序电流互感器 继电保护 |
Discussion on the installation of low voltage zero sequence protection |
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| Wang Liang,Zhang Qingwei.Discussion on the installation of low voltage zero sequence protection[J].Guizhou Electric Power Technology,2014(11):75-76. |
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| Authors: | Wang Liang Zhang Qingwei |
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| Affiliation: | (Guiyang Power Supply Bureau, Guiyang 550002 Guizhou, China) |
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| Abstract: | In this paper, mistaken action due to non-standard installation position of low voltage zero sequence protection in sub- station transformer was discussed. Through the analysis of fault current loop for TN-C-S system and local TT system, this paper concluded the optimal installation position of zero sequence CT, to guarantee low voltage zero sequence over current protection could all operate properly. |
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| Keywords: | substation transformer zero sequence overcurrent zero sequence current transformer relay protection |
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