考虑电晕和集肤效应时多导线系统的波过程计算

A New Approach to the Prediction of Surge Propagation on Polyphase Transmission Lines Influenced by Corona and Skin Effects

本文提出一种在时域内同时考虑电晕和集肤效应的架空多导线系统的数学模型——一组拟线性双曲型偏微分方程,较完整地考虑了线间耦合、非线性电晕以及参数频率特性等问题。经特征变换后,采用收敛和稳定性均有保证的Courant差分格式进行数值计算,克服了对称差分格式在处理线路边界条件时的困难。实算结果以令人满意的精度再现了实测波形。

A group of nonhomogeneous quasi—linear nyperoonc p(?) (?) equations is proposed to predict the surge propagation on polyphase transmission lines considering corona and skin effects in time—domain. The characteristic relations has becn developed and it is very suitable to use the Courant difference method with the guarantee condition of convergence. This method is convenient to deal with the boundary.