用随机微分方程模拟输电线路模型中的随机效应

L. Brancík, A. Prokeš, E. Kolárová
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引用次数: 7

摘要

本文基于随机微分方程理论,研究了一种具有随机变参数的输电线路模型的仿真方法。可以考虑激发源和TL模型参数的随机变化。电压和/或电流响应以样本均值和适当的置信区间的形式表示,以提供可靠的估计。TL模型基于RLGC网络的级联连接,可以对一般的非均匀TL进行建模。首先采用状态变量法建立模型方程,然后建立相应的SDE向量。在使用MATLAB®语言环境进行所有计算时,使用随机隐式欧拉数值格式。为了验证结果,还利用拉普拉斯变换的数值反演方法计算了确定性响应。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Simulation of random effects in transmission line models via stochastic differential equations
The paper deals with a method for simulation of transmission line (TL) models with randomly varied parameters, based on the theory of stochastic differential equations (SDE). The random changes of both excitation sources and TL model parameters can be considered. Voltage and/or current responses are represented in the form of the sample means and proper confidence intervals to provide reliable estimates. The TL models are based on a cascade connection of RLGC networks enabling to model nonuniform TLs in general. To develop model equations a state-variable method is used, and afterwards a corresponding vector SDE is formulated. A stochastic implicit Euler numerical scheme is used while using the MATLAB® language environment for all the computations. To verify the results the deterministic responses are also computed by the help of a numerical inversion of Laplace transforms procedure.
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