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[1]彭楠,杨智,梁睿,等. 一种半波长输电线路的分布式行波测距方法[J].电机与控制学报,2019,23(08):35-42.[doi:10.15938/j.emc.2019.08.005]
 PENG Nan,YANG Zhi,LIANG ui,et al. Distributed traveling wave fault location scheme for half-wavelength transmission lines[J].,2019,23(08):35-42.[doi:10.15938/j.emc.2019.08.005]
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 一种半波长输电线路的分布式行波测距方法
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《电机与控制学报》[ISSN:1007-449X/CN:23-1 408/TM]

卷:
23
期数:
2019年08
页码:
35-42
栏目:
出版日期:
2019-08-31

文章信息/Info

Title:
 Distributed traveling wave fault location scheme for half-wavelength transmission lines
作者:
 彭楠 杨智 梁睿 王政
 ( 中国矿业大学电气与动力工程学院,江苏徐州221116)
Author(s):
 PENG Nan YANG Zhi LIANG Rui WANG Zheng
 ( School of Electrical and Power Engineering,China University of Mining and Technology,Xuzhou 221116,China)
关键词:
半波长线路 行波测距 分布式测量 行波衰减 高频分量幅值
Keywords:
half-wavelength transmission line traveling wave fault location distributed measurementtraveling wave attenuation high-frequency component amplitude
分类号:
TM 773
DOI:
10.15938/j.emc.2019.08.005
文献标志码:
A
摘要:
针对传统行波测距在半波长线路上应用时误差大和死区问题,建立了半波长输电线路依频特性仿真模型,分析了行波首波头色散畸变特性以及对双端行波测距的影响,提出了适应半波长输电线路的分布式行波测距方案。该方案依据行波幅值衰减规律布置行波测点,采用S 变换提取的行波首波头高频分量累加幅值构建故障区段定位判据,利用临近测点行波高频分量幅值信息以应对测点数据丢失的情况,并利用小波Teager 能量算子提取双端行波到达时刻以实现精确测距。仿真计算表明: 所提方案不受故障状况、噪声、负载变动、断路器和快速接地开关动作的影响,定位精度高、可靠性好。
Abstract:
Aiming at the problem that gross fault location error and dead zone exists when traditional traveling wave based methods are applied to ultra-high voltage half-wavelength transmission ( UAHT) lines,frequency dependent model of UAHT lines is established,and dispersion and distortion characteristics of the traveling waves and impacts on double-end traveling wave fault location are explored,and a distributed traveling wave fault location scheme is proposed. In the scheme,the distributed measurement points were deployed based on the traveling wave amplitude attenuation characteristics; the accumulated amplitude of high frequency components extracted by S-transform was used to construct the criterion for faulted section determination; the information of the neighboring measurement points was fully utilized to deal with the condition of data missing; and the arrival time of the traveling wave at double terminals was calculated by wavelet Teager energy operator to realize accurate fault location. Related simulation calculation results demonstrate that the scheme is basically not affected by fault conditions,noises,load variation and operation of circuit break and high-speed grounding switch ( HIGS) . The scheme has high fault location accuracy and reliability.

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备注/Memo

备注/Memo:
 收稿日期: 2017 - 11 - 20
基金项目: 国家自然科学基金( 51504253) ; 江苏省自然科学基金( BK20161185)
作者简介: 彭楠( 1993—) ,男,博士研究生,研究方向为电网故障定位;
杨智( 1992—) ,男,硕士研究生,研究方向为电网故障定位;
梁睿( 1981—) ,男,教授,博士生导师,研究方向为电力系统自动化、供配电安全及保护;
王政( 1992—) ,男,硕士研究生,研究方向为电网故障定位。
通信作者: 彭楠
更新日期/Last Update: 2019-10-14