Research on the Equivalent Circuit Modeling of Transmission Lines and Sensitivity Analysis in Electromagnetic Transient Simulation
Based on the amplitude frequency and phase frequency characteristics analysis, the sensitivity and applicability of equivalent circuits of transmission lines are presented in this paper, which can be as the reference for system analysis and simulation.Firstly the Г section equivalent circuit was introduced as the equivalent of transmission line and its validity was proved by formula derivation.The frequency characteristics of lumped parameters circuits are analyzed and compared with the distributed parameters circuit.From characteristic analysis, the effective frequency band that the lumped parameters circuit can be taken as the equivalent of transmission line was obtained.Considering the frequency sensitivity and model complexity, the selection criteria for analysis and simulation is proposed.The research results showed that π section has the best approximation and Г section has the simplest model equation.The proper selection of equivalent circuit can significantly increase the convenience and effectiveness for power system analysis.
Amplitude frequency analysis equivalent circuit lumped parameter circuit phase frequency analysis sensitivity analysis transmission line Г circuit
Shicong Ma Hua Zhang Qing He Yanchen Yang Zhao Yang
China Electric Power Research Institute, Haidian District, Beijing 100192 China State Grid Corporation of China, Xicheng District, Beijing100031 China
国际会议
南京
英文
714-718
2015-09-21（万方平台首次上网日期，不代表论文的发表时间）