| 从一起失灵保护动作分析CVT对保护的影响及对策 |
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| 引用本文： | 万保全,上官帖,熊华强,王治.从一起失灵保护动作分析CVT对保护的影响及对策[J].江西电力,2011,35(6):21-24. |
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| 作者姓名： | 万保全 上官帖 熊华强 王治 |
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| 作者单位： | 1. 江西省电力公司江西南昌 330077
2. 江西省电力科学研究院江西南昌 330096 |
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| 摘 要： | 电容式电压互感器(CVT)中包含有电容、电感等储能元件,合理选择其阻尼器能产生较好阻尼作用,否则在CVT二次负载发生变化时,可能使其二次输出回路产生谐振电压,对继电保护产生不良影响.本文针对一起保护误动的故障进行分析,通过现场试验分析发现CVT二次负载发生变化时,CVT二次回路会产生谐振电压,并导致继电保护装置的复合电...
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| 关 键 词： | 继电保护 误动 电容式电压互感器 谐振 对策 |
Analysis of CVT's Influence on Protection and Its Coutermeasure from a Case of Failure Protection Maloperation |
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| WAN Bao-quan
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SHANGGUAN Tie
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XIONG Hua-qiang
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WANG Zhi.Analysis of CVT's Influence on Protection and Its Coutermeasure from a Case of Failure Protection Maloperation[J].Jiangxi Electric Power,2011,35(6):21-24. |
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| Authors: | WAN Bao-quan SHANGGUAN Tie XIONG Hua-qiang WANG Zhi |
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| Affiliation: | WAN Bao-quan1,SHANGGUAN Tie 2,XIONG Hua-qiang2,WANG Zhi2(1.Jiangxi Electric Power Corporation,Nanchang 330077,2.Jiangxi Electric Power Research Institute,Nanchang 330096) |
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| Abstract: | A Capacitor voltage transformer(CVT) contains energy storage elements like capacitance and inductance.A good damper can be an effective measure to prevent resonance voltage in the secondary output circuit when CVT secondary load changed.This paper presents a malfunction analysis of unwanted relay protection operation of this problem which leads blocking element false operation.To avoid the similar thing happened again,we come up with resonance test in similar operating mode to make a full use of damper to e... |
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| Keywords: | relay protection unwanted operation capacitor voltage transformers resonance countermeasures |
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