| 考虑波速变化特性的直流输电线路行波故障测距新算法 |
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| 引用本文： | 张怿宁,徐敏,刘永浩,蔡泽祥.考虑波速变化特性的直流输电线路行波故障测距新算法[J].电网技术,2011(7). |
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| 作者姓名： | 张怿宁 徐敏 刘永浩 蔡泽祥 |
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| 作者单位： | 中国南方电网超高压输电公司检修试验中心;华南理工大学电力学院; |
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| 摘 要： | 提出一种考虑波速变化特性的新型直流行波故障测距算法,有效解决了由于采用固定波速造成的某些故障距离下测距误差过大的问题。首先深入分析了故障行波的变波速特性,得出结论:对于合适分辨率的测距装置,行波波速为故障距离的一元函数。基于这一结论深入分析了变化波速对直流行波故障测距的影响机理,并提出了考虑波速变化特性的新型故障测距算法。在EMTDC环境下进行了仿真分析,相关结果证实了所提算法的有效性。
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| 关 键 词： | 变化波速 直流输电 行波故障测距 |
A Novel Travelling Wave Fault Location Algorithm for HVDC Transmission Lines Considering Variation Characteristics of Wave Speed |
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| ZHANG Yining,XU Min,LIU Yonghao,CAI Zexiang.A Novel Travelling Wave Fault Location Algorithm for HVDC Transmission Lines Considering Variation Characteristics of Wave Speed[J].Power System Technology,2011(7). |
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| Authors: | ZHANG Yining XU Min LIU Yonghao CAI Zexiang |
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| Affiliation: | ZHANG Yining1,XU Min2,LIU Yonghao2,CAI Zexiang2(1.Test & Maintenance Center,CSG EHV Power Transmission Company,Guangzhou 510633,Guangdong Province,China,2.School of Electric Power,South China University of Technology,Guangzhou 510640,China) |
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| Abstract: | A novel traveling wave fault location algorithm for HVDC transmission lines,in which the variation characteristics of wave speed is considered,is proposed to effectively remedy the defect of high error under a certain fault distance in fault location due to adopting fixed wave speed.Firstly,the characteristics of varying wave speed of fault traveling wave are analyzed in depth and the conclusion is that for the fault location device with appropriate resolution the wave speed is a univariate function of faul... |
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| Keywords: | varying travelling wave speed HVDC power transmission fault location |
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