| 220kV变压器阻抗保护的振荡闭锁方案 |
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| 引用本文： | 李静.220kV变压器阻抗保护的振荡闭锁方案[J].江苏电机工程,2012,31(4):63-67. |
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| 作者姓名： | 李静 |
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| 作者单位： | 镇江供电公司,江苏镇江,212001 |
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| 摘 要： | 介绍了江苏省电网系统由于220 kV变压器与110 kV变压器的容量使用不匹配,造成110 kV线路距离保护与220 kV主变110 kV侧后备保护及110 kV主变保护之间在配合上产生了矛盾,可能引起220 kV主变110 kV侧后备保护越级跳闸。为解决这一问题,研究并提出了在220 kV主变保护中增加阻抗保护的特殊配置方案,同时也给出了一个振荡闭锁的实现方案,该方案通过实验室实时数字仿真（RTDS）数模试验、动模试验和装置试运行证明是行之有效的。
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| 关 键 词： | 容量使用不匹配 220kV变压器 阻抗保护 振荡闭锁 实施方案 |
Swing-blocking Scheme for 220 kV Transformer Impedance Protection |
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| LI Jing.Swing-blocking Scheme for 220 kV Transformer Impedance Protection[J].Jiangsu Electrical Engineering,2012,31(4):63-67. |
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| Authors: | LI Jing |
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| Affiliation: | LI Jing(Zhenjiang Power Supply Company,Zhenjiang 212001,China) |
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| Abstract: | Because 220 kV main transformer and 110 kV transformer do not match in capacities,the distance protection of 110 kV line does not match with the backup protection of 110 kV side of 220 kV main transformer and the protection of 110 kV main transformer.the override trip of the backup protection is caused.To solve the problem,a special configuration scheme of adding impedance protection into the protection of 220 kV main transformer is proposed.An implementing scheme of swing blocking is given and verified effective by RTDS,dynamic simulation tests and trial operation. |
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| Keywords: | not match in capacities 220 kV transformer impedance protection swing blocking implementing scheme |
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