采样频率对行波测距影响的仿真分析  

Simulation Analysis of Impacts of Sampling Frequency on Traveling Wave Ranging

作　　者：徐伟宗 

机构地区：[1]广州供电局有限公司,广州510000

出　　处：《电力系统及其自动化学报》2014年第6期76-80,共5页Proceedings of the CSU-EPSA

摘　　要：为了探讨行波测距装置所需要的采样频率,根据行波自身的特性,从时域角度出发利用均匀采样模式分析了采样频率对常用的A、B、C、D型行波测距原理的影响,并对用于高压输电线路和低压配电线路的行波测距装置所需的采样频率进行了探讨,得出提高采样频率通常可以提高测距精度,但测距精度并不与采样频率成正比及对行波波头识别算法进行相应的补偿可以提高测距准确性的结论,并通过仿真实验进行了相应的验证,仿真结果对装置的研发具有一定的借鉴意义。In order to explore proper sampling frequency applied to traveling wave ranging device,according to the characteristics of travelling wave,the effect of sampling frequency on traveling wave fault location principle of commonly used A,B,C,D types from time domain aspects is analyzed under uniform sampling mode.And sampling frequency used for travelling wave ranging device applied to high-voltage transmission lines and the low-voltage distribution lines is discussed.A conclusion is obtained that increasing sampling frequency often can improve the measurement accuracy,but the precision is not proportional to sampling frequency.Moreover,it may get the better accuracy to compensate for the identifying traveling wave head algorithm.The result is proved by simulation experiments,and it has a certain referential significance for development of the device.

关 键 词：行波测距 影响因素 采样频率 精度 

分 类 号：TM773[电气工程—电力系统及自动化]