| 基于能量比法的输电线路行波故障测距 |
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| 引用本文： | 韩志锟,饶曙勇,姜玉山,王世钊,刘嘉婧,卢毅. 基于能量比法的输电线路行波故障测距[J]. 电网技术, 2011, 0(3) |
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| 作者姓名： | 韩志锟 饶曙勇 姜玉山 王世钊 刘嘉婧 卢毅 |
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| 作者单位： | 东南大学电气工程学院; |
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| 摘 要： | 输电线路行波故障测距的关键在于对故障行波波头的识别和定位。为实现准确故障测距,应用一种新的信号处理方法,从行波能量的角度出发,利用时窗滚动计算的能量比函数法来处理故障行波,以此计算波头时延,实现故障测距。研究了不同时间窗宽度对定位准确度的影响,以此选择合理的时间窗进行能量比计算,并分析了复杂环境干扰下能量比法的测距精度。ATP/EMTP仿真试验数据处理结果表明,该方法准确有效,而且计算简便快捷,在低信噪比环境下有很好的抗干扰能力。
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| 关 键 词： | 能量比 行波 故障测距 时间窗 干扰 |
Energy Ratio Function-Based Traveling-Wave Fault Location for Transmission Lines |
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| HAN Zhikun,RAO Shuyong,JIANG Yushan,WANG Shizhao,LIU Jiajing,LU Yi. Energy Ratio Function-Based Traveling-Wave Fault Location for Transmission Lines[J]. Power System Technology, 2011, 0(3) |
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| Authors: | HAN Zhikun RAO Shuyong JIANG Yushan WANG Shizhao LIU Jiajing LU Yi |
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| Affiliation: | HAN Zhikun,RAO Shuyong,JIANG Yushan,WANG Shizhao,LIU Jiajing,LU Yi(School of Electrical Engineering,Southeast University,Nanjing 210096,Jiangsu Province,China) |
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| Abstract: | The crux of traveling wave fault location for transmission lines is the identification and location of the wave front of fault generated traveling wave.To implement accurate fault location,a new signal processing method is utilized,i.e.,from the viewpoint of traveling wave energy the fault generated traveling wave is processed by the energy ratio function obtained from time-window continuous calculation,thus the time-delay of wave front can be calculated and fault location is implemented.The influences of d... |
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| Keywords: | energy ratio traveling wave fault location time window noise |
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