| 适用于微机母线保护的电流互感器饱和的检测方法 |
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| 引用本文： | 马征,王增平.适用于微机母线保护的电流互感器饱和的检测方法[J].电力科学与工程,2008,24(8). |
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| 作者姓名： | 马征 王增平 |
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| 作者单位： | 1. 华北电力大学,河北,保定,071003;保定中力电力科技发展有限公司,河北,保定,071051
2. 华北电力大学,河北,保定,071003 |
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| 摘 要： | 通过对电流互感器(TA)饱和时电流特点的分析,提出了一种用于微机母线保护装置的TA饱和检测方案.该方案与基于瞬时值比率制动的差动保护相结合,在区外故障且TA饱和发生的情况下能够可靠闭锁保护,当发生区外转区内故障时能够快速开放保护.已有采用此方案的微机母线保护装置在电力系统中运行.
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| 关 键 词： | 微机母线保护 TA饱和检测 |
Detecting Method of Saturation of Current Transformer Used in Microcomputer Bus Protection |
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| Ma Zheng,Wang Zengping.Detecting Method of Saturation of Current Transformer Used in Microcomputer Bus Protection[J].Power Science and Engineering,2008,24(8). |
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| Authors: | Ma Zheng Wang Zengping |
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| Abstract: | Based on the features of saturated current analyzed,the detecting method of TA saturation used in microcomputer bus protection is presented in this paper.Combined with sampling arithmetic for differential current protection, this method ensured that bus protection can be locked reliably when external fault and TA saturation and disparked quickly when internal fault occur after external fault.Some protective relays using the theory has been served in electric power system. |
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| Keywords: | microcomputer bus protection TA saturation check |
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