| 基于输电线路行波波速在线测量方法的研究 |
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| 引用本文： | 贾智彬,陈雪,杨志广.基于输电线路行波波速在线测量方法的研究[J].电气开关,2009,47(1):43-45. |
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| 作者姓名： | 贾智彬 陈雪 杨志广 |
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| 作者单位： | 三峡大学,电气信息学院,湖北,宜昌,443002 |
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| 摘 要： | 基于对输电线路发生故障时，用到行波波速作为故障点定位计算参量的情况，考虑到波速对故障测距精度的影响，提出一种在线测量输电线路中行波波速的方法。利用输电线路合闸时产生的操作过电压行波来进行在线测量线路的行波波速。从相模变换、小波变换理论和仿真几个方面对此方法进行分析。仿真结果表明，该方法实现简单，对提高行波故障测距精度有一定的效果。
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| 关 键 词： | 行波波速 在线测量 输电线路 小波变换 |
Research on Traveling Wave Speed on-line Measurement |
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| JIA Zhi-bin,CHEN Xue,YANG Zhi-guang.Research on Traveling Wave Speed on-line Measurement[J].Electric Switchgear,2009,47(1):43-45. |
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| Authors: | JIA Zhi-bin CHEN Xue YANG Zhi-guang |
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| Affiliation: | College of Electric Engineering and Information;Three Gorges University;Yichang 443002;China |
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| Abstract: | In this paper,it is the aim to reduce the impact of traveling wave velocity in fault location system,according that the traveling wave speed is always used as a parameter to local the fault of transmission lines.This paper presents an online approach to measure traveling-wave velocity in transmission lines.This method imposes the over-voltage traveling wave produced at the moment of the circuit breaker closing operation in power transmission lines.This article analyses this method with the decoupling transf... |
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| Keywords: | traveling wave speed on-line measurement transmission lines wavelet transform |
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