| 主变保护误动作一例分析及探讨 |
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| 引用本文： | 张立中.主变保护误动作一例分析及探讨[J].宁夏电力,2005(Z1):196-197. |
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| 作者姓名： | 张立中 |
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| 作者单位： | 银川市供电局,银川市,750002 |
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| 摘 要： | 2004年7月20日,110kV长城变#1主变因差动保护动作而造成主变三侧开关跳闸,经分析是由于主变保护差动回路被误短接所致,为此需采取相关的技术措施和组织措施,防止类似事故的发生.
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| 关 键 词： | 差动保护 CT回路 动作方程 差动闭锁 |
| 文章编号： | 1672-3643(2005)ZK-0196-02 |
| 修稿时间： | 2005年2月23日 |
Discussion on false action of main transformer protection |
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| ZHANG Li-zhong.Discussion on false action of main transformer protection[J].Ningxia Electric Power,2005(Z1):196-197. |
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| Authors: | ZHANG Li-zhong |
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| Affiliation: | Yingchuan 750002 |
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| Abstract: | On July the twentieth, in 2004, No.1 main substation of the Great Wall in 110kv substation is due to differential protection caused three sides of main substation trip, the reason is that differential loop of main substation protection is short , , so relevant technical measures and organizing measures are taken to prevent similar accident . |
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| Keywords: | differential protection CT loop operation equation differential interlock |
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