电网技术Issue(4)：1083-1089,7.
单相均匀传输线暂态模型参数计算
A Method to Calculate Parameters of Transient Model for Single-Phase Uniform Transmission Line
摘要
Abstract
Complicated structure and heavy calculation burden are defects of existing distributed parameter model and multiple lumped parameter models utilized for the analysis on high-frequency transient characteristics of transmission lines. The structure of single link models with lumped parameters is simple, however its applicable frequency band is far below the first resonant frequency band of distributed parameter model. For this reason, based on the cases of open-circuit and short-circuit at the end of single-phase uniform transmission line, impedance characteristics of the model with distributed parameters, the single-link Π-shaped, T-shaped and Γ-shaped models with lumped parameters are analyzed, and according to the result of error analysis on equivalent impedance at the lowest frequency band of each model a method of parameter calculation for single link model with lumped parameters is proposed, namely based on the principle of ensuring power-frequency equivalent impedances equal, the first resonant frequency bands equal and comprehensive error of equivalent reactance within the lowest frequency band minimum, the applicable frequency band of single-linkΠ-shaped, T-shaped andΓ-shaped models is raised to the first resonant frequency band of distributed parameter model, thus the applicable range of Π-shaped, T-shaped and Γ-shaped models are extended. Simulation results show that the proposed method is effective and correct.关键词
均匀传输线/暂态模型/分布参数模型/集中参数模型/谐振频率Key words
uniform transmission lines/transient model/distributed parameter model/lumped parameter model/resonant frequency分类
信息技术与安全科学引用本文复制引用
李娟,薛永端,徐丙垠,高厚磊..单相均匀传输线暂态模型参数计算[J].电网技术,2013,(4):1083-1089,7.基金项目
国家自然科学基金资助项目(51077090) （51077090）
国家863高技术基金项目(2012AA050213) （2012AA050213）
国家电网公司科技项目(2012093) （2012093）
