| 引用本文: | 徐红红,陈小川,张雷,等.全并联AT供电牵引网断线接地阻抗计算与分析[J].电力系统保护与控制,2008,36(2):6-9. |
| XU Hong-hong,CHEN Xiao-chuan,ZHANG Lei,et al.Calculation and simulation of the impedance of grounding fault with interruption in all-parallel AT traction network[J].Power System Protection and Control,2008,36(2):6-9 |
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| 摘要: |
| 针对客运专线全并联AT供电牵引网发生断线接地故障时馈线保护装置拒动这一现象，利用电路基本原理，采用数学方法对全并联AT供电牵引网断线接地的阻抗进行了理论上的推导计算，将其与短路故障的阻抗进行比较分析，得出断线接地故障是一种高阻接地故障，远远大于短路时的阻抗，超出了馈线保护阻抗的整定值。并利用Matlab/Simulink软件建立牵引网故障模型并进行了仿真验证，证明了本文理论推导的正确性，从而找到了发生断线接地故障时馈线保护装置拒动的原因。 |
| 关键词: 全并联AT供电 断线接地故障 测量阻抗 馈线保护 |
| DOI：10.7667/j.issn.1674-3415.2008.02.002 |
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| 基金项目: |
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| Calculation and simulation of the impedance of grounding fault with interruption in all-parallel AT traction network |
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XU Hong-hong1, CHEN Xiao-chuan, ZHANG Lei2, LIU Hang
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1.College of Electrical Engineering ,Southwest Jiaotong University, Chengdu 610031,China;2.The Fourth Survey and Design Institute of China Railways, Wuhan 430063,China
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| Abstract: |
| The feeding-line protection equipment would not operate when the all-parallel AT traction network is interrupted with grounding .Aiming at the phenomena, the impedance of the fault is analysed and calculated by circuit knowledge and mathematics method . It is compared to the impedance of short fault . The fault is a high-impedance grounding one . The impedance value is too much bigger than the short fault’s . The equipment don’t operate because it is out of the fixed value of feeding-line protection . The result is simulated and validated by Matlab/Simulink . |
| Key words: all-parallel AT traction system the complex grounding fault with interruption measured impedance feeding-line protection |
