| 突变量接地方向阻抗继电器性能分析 |
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| 引用本文： | 张国良,许建安.突变量接地方向阻抗继电器性能分析[J].水电能源科学,2009,27(2). |
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| 作者姓名： | 张国良 许建安 |
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| 作者单位： | 福建水利电力职业技术学院,福建,永安,366000 |
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| 摘 要： | 分析了反映突变量接地方向阻抗继电器正反向单相接地时动作特性、继电器用于长距离输电线路对侧母线跳闸后误动原因,提出了当被保护线路较短且保护方向等效电源容量很大时方向性和正向接地故障时允许较大过渡电阻间存在矛盾的解决方案.
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| 关 键 词： | 突变量 动作特性 阻抗继电器 方向性 |
Analysis of Characteristics for Impedance Relay in Sudden Change Variable Grounding Direction |
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| ZHANG Guoliang XU Jian''an.Analysis of Characteristics for Impedance Relay in Sudden Change Variable Grounding Direction[J].International Journal Hydroelectric Energy,2009,27(2). |
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| Authors: | ZHANG Guoliang XU Jian'an |
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| Affiliation: | Fujian Water Conservancy and Power Professional Technical College;Yongan 366000;China |
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| Abstract: | This paper analyzes the operation characteristics of impedance relay with positive and negative single-phase grounding in the sudden change variable grounding direction.Then,it reveals the malfunction reasons of the relay on the long distance transmission line thus causing the side bus tripping.Finally,a solution is put forward to resolve the contradiction between the directionality and the allowing larger transition resistance during positive grounding fault under the condition of shorter protected line an... |
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| Keywords: | sudden change variable operation characteristics impedance relay directionality |
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