Multi-conductor transmission line with nonlinear impedances: Application to 50Hz studies

Transmission Line Conductor Galloping Analysis using FEM

To find a mathematical standard of the galloping mechanism, and it is required to compare the existing mathematical standards on the conductor galloping. In this paper, using the Hamilton principle the continuum cable standard for transmission lines was proposed. Discrete standards of one degree of freedom, two degree of freedom, and three degree of freedom were obtained from the Garlekin funct...

Travelling-wave Modelling of Uniform Multi- Conductor Transmission Line Networks — Part I: Analytical Derivation

In Part I of this work, analysis of uniform multi-conductor transmission line networks is performed on travelling-wave basis, via “quasi-TEM” approach. Narrowband interpretation of the modal theory in the time domain and quantification of the multiple reflections effect are both included. Theoretical demonstration and analytical formulation are provided, along with guidelines towards computatio...

Travelling-wave Modelling of Uniform Multi- Conductor Transmission Line Networks — Part Ii: Experimental Validation — Applica- Bility

In Part I of this work, travelling-wave modelling of uniform multi-conductor transmission line networks was analytically established with direct applicability to narrowband transmission, covering any network formed of lossy (in the general case), diagonalisable uniform multi-conductor transmission lines of either distinct or degenerate eigenvalues. As the whole work applies especially in the fi...

Multi-conductor transmission line model for electrified railways: A method for including responses of lumped devices

For studying the response to transients caused by lightning and other electromagnetic disturbance sources, electrified railway systems can be represented as a system of multiconductor transmission lines (MTL) above a finitely conducting ground. The conductors present in this system would be wires for traction power supply, auxiliary power, return conductors for traction current, the tracks, and...

POWER QUALITY IMPROVEMENTS IN 25kV 50Hz RAILWAY SUBSTATIONS BASED ON CHOPPER CONTROLLED IMPEDANCES