暂态保护研究中若干问题的探讨

Discussion on several problems of digital simulation in the transient protection for transmission line

从暂态保护的基本原理出发,讨论了在暂态保护数字仿真中的几个问题,包括仿真线路模型的选择,数字仿真工具的比较、信号处理技术的选择运用以及在暂态保护研究中所涉及的几个影响因素。选择了具有分布参数的FD(Frequency-Dependent)线路模型,数字仿真工具比较了ATP和Matlab,对于信号处理工具则分析了小波分析方法与形态滤波技术,最后讨论了影响暂态保护的几个因素,提出了暂态保护的仿真研究思路。

Based on the basic principle of transient protection, this paper discusses several problems of digital simulation in the transient protection, such as the selection of transmission lines model, comparison of digital simulation tools, application of signal processing technologies and several influencing factors in the research of transient protection simulation. Then, FD(Frequency-Dependent) line model with distribution parameters is selected, ATP and Matlab are compared, wavelet analysis and morphology algorithm are analysed, and several uncertain factors are discussed. Finally, the thought of digital simulation for transient protection is proposed.