Explore the Overvoltage Effect of the Two Port Networks in the Long Distance Transmission Line

Yu Zhang, Jialu Liu, Lin Qiao, Min Dong
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Abstract

Π two-port networks and T two-port networks have different structures, parameters and show different transient characteristics, which can be used as a reference for engineering applications. Firstly, from the structure and parameter design of π networks, equivalent circuits of two π networks are given. Based on this, the characteristics of π and T networks are explored and their transitions are given. Then the voltage characteristics of the two two-port networks are analyzed, and the overvoltage of the two networks under single-phase grounding and lightning strike is explored, which provides reference for the insulation coordination of long-distance transmission lines connected to the two-port networks. Finally, a large number of simulations are carried out to explore the influence of overvoltage when a two-port network is connected to a long-distance transmission line.
探讨远距离输电线路中两口网的过电压效应
Π双端口网络和T双端口网络具有不同的结构、参数和不同的暂态特性,可作为工程应用的参考。首先,从π网络的结构和参数设计出发,给出了两个π网络的等效电路。在此基础上,探讨了π和T网络的特性,并给出了它们的过渡。然后对两口网络的电压特性进行了分析,并对两口网络在单相接地和雷击下的过电压进行了探讨,为连接两口网络的长距离输电线路的绝缘协调提供了参考。最后,进行了大量的仿真,探讨了两口网络连接到长途传输线时过电压的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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