| 农电66kV变电所继电保护中易忽视的问题 |
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| 引用本文： | 朱静,张明辉. 农电66kV变电所继电保护中易忽视的问题[J]. 农业机械化与电气化, 2008, 0(6) |
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| 作者姓名： | 朱静 张明辉 |
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| 作者单位： | 老边区供电局; |
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| 摘 要： | TA饱和影响供电可靠性,严重威胁运行设备的安全。通过介绍农网变电所中10kV线路TA饱和的二次电流特性,以及TA饱和对感应型、电磁型和数字式电流继电器的影响,提出增大保护级TA的变比、减小电流互感器的二次负载以避免TA饱和的方法。同时,分析了励磁涌流对继电保护装置的影响,并提出了解决方法。
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| 关 键 词： | 农电 变电所 继电保护 TA饱和 励磁涌流 |
Some Problems often Neglected in Relay Protection on 66 kV Transformer Station in Rural Power Network |
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| ZHU Jing,ZHANG Minghui. Some Problems often Neglected in Relay Protection on 66 kV Transformer Station in Rural Power Network[J]. , 2008, 0(6) |
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| Authors: | ZHU Jing ZHANG Minghui |
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| Affiliation: | ZHU Jing,ZHANG Minghui (Laobian Power Apply Bureau,Yingkou Liaoning 115005,China) |
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| Abstract: | TA saturation can affect power apply reliability and equipment safety. This article introduces secondary current character of TA saturation in 66 kV line on transformer station in rural power network, summarizes the effect of TA saturation on inductive relay, electromagnetic relay and digital relay, and puts forward some methods to prevent TA saturation including increasing the change of protection stage, reducing the secondary load of current transformer and so on. At last, several maneuverability measures... |
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| Keywords: | rural power network transformer station relay protection TA saturation excitation flow |
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