行波保护数字仿真中几个问题的讨论  

Discussion on several questions of the digital simulation of the traveling wave protection

作　　者：张晓东[1] 张举[1] 丁峰[1] 

机构地区：[1]华北电力大学电力系,河北保定071003

出　　处：《继电器》2003年第2期69-73,共5页Relay

摘　　要：从行波保护的概念出发 ,讨论了在行波保护数字仿真中的几个常规问题 ,包括线路模型的选择 ,数字仿真工具的选择 ,信号处理工具的选择 ,以及在行波保护研究中所要考虑的几个影响因素。对于线路模型选择了FD(Frequency Dependent)线路模型 ,数字仿真工具选择了ATP与MATLAB ,信号处理工具选择了小波分析方法 ,而行波保护仿真所要考虑的几个影响因素主要讨论了行波信号的不确定因素的影响、阻波器的影响、接地电阻的影响以及线路换位情况的影响。文中对讨论的几个问题所给出的建议性的意见 。With the rapid development of power system, the action speed of relay protection is required more highly. The traveling wave protection has the virtue of hyper action speed. So it is paid more and more attention. Simulation is a custom and effective method in the research of traveling wave protection. The paper discusses several custom questions of the digital simulation of the traveling wave protection, including the selection of transmission lines model, the selection of digital simulation tools, the selection of signal processing tools and several influencing factors in the research of traveling wave protection digital simulation. Against upper questions, Frequency Dependent line model, ATP along with MATLAB and wavelets analysis are respectively selected. With regard to the influencing factors in the research of traveling wave protection digital simulation, signal's indeterminacy factors, line traps' influence, ground resistance' influence and transposed situation's influence are discussed. Some prepositional advices are provided against every question and they are valuable in the research of traveling wave protection.

关 键 词：行波保护 数字仿真 线路保护 电力系统 输电线路 高频保护 

分 类 号：TM773[电气工程—电力系统及自动化] TM743