| 单相自动重合闸永久性故障识别新方法研究 |
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| 引用本文： | 李玲,金国彬,黄绍平. 单相自动重合闸永久性故障识别新方法研究[J]. 湖南工程学院学报(自然科学版), 2008, 18(3): 10-12 |
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| 作者姓名： | 李玲 金国彬 黄绍平 |
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| 作者单位： | 湖南工程学院,电气信息学院,湖南,湘潭,411101;湖南工程学院,电气信息学院,湖南,湘潭,411101;湖南工程学院,电气信息学院,湖南,湘潭,411101 |
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| 摘 要： | 提出一种识别高压输电线路单相接地故障类型的新方法.高压输电线发生单相接地故障，两侧断路器完全开断后，从线路首端检测线路对地电流，瞬时性故障时为很小的本线路电容电流；永久性故障时为较大的电磁耦合电流.通过检测故障线路对地电流的大小实现短路故障类型的判断.该方法可有效识别单相接地短路故障类型，有一定耐过渡阻抗影响的能力，仿真结果验证了该方法的有效性.
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| 关 键 词： | 单相自动重合闸 电流检测 永久性故障 瞬时性故障 |
A Novel Approach on Identification of Permanent Faults for Single-phase Auto-reclosure |
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| LI Ling,JIN Guo-bin,HUANG Shao-ping. A Novel Approach on Identification of Permanent Faults for Single-phase Auto-reclosure[J]. Journal of Hunan Institute of Engineering(Natural Science Edition), 2008, 18(3): 10-12 |
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| Authors: | LI Ling JIN Guo-bin HUANG Shao-ping |
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| Affiliation: | (College of Elect. and Information, Hunan Institute of Engineering, Xiangtan 411101, China) |
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| Abstract: | A novel approach on identification of fault type for high voltage transmission line is presented in this paper.Under transient faults after the breaker tripping,the current of line to ground is detected from the first end,which is a small captive current for instantaneous faults and a bigger electromagnetic coupling current for permanent faults.The identification of fault type is realized by detecting current.This method is effective to judge the grounding fault type of single-phase and able to bear some transition impedance.Its efficiency has been shown by simulation results. |
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| Keywords: | single-phase auto-reclosure current detection permanent fault instantaneous fault |
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