Abstract
This paper describes the design of a new type of pantograph-catenary arc simulation test device and simulation of the arc generated by the pantograph during operation under laboratory conditions. The influence of the burning position of the pantograph-catenary arc on the overvoltage of the traction system is studied. Corresponding suppression measures for the arcs are proposed, and the dynamics of the arc processes are carried out by theoretical simulation. The characteristics of the pantograph-catenary arc and the discharge process are analyzed, and the relationship between the characteristics of the pantograph and the arc is explored.
Highlights
The traction power supply system is an important part of highspeed railways and a channel for electric locomotive energy transmission
The waveform distortion of the traction voltage and current increases reduces the quality of the traction power supply6–8 and makes the relay protection device in the line malfunction, and the power system of the locomotive has zero output temporarily
A damping capacitor bank is connected in parallel in the locomotive to buffer the unbalanced voltage during the off-line process, and the discharge process is simulated and analyzed
Summary
The traction power supply system is an important part of highspeed railways and a channel for electric locomotive energy transmission. Due to the changes in train speed and natural weather and other factors, the pantograph-catenary contact system is unavoidably in a frequent vibration environment, which is prone to generate off-line arcs.. High-speed trains have continuously developed in the direction of high speed, long distance, and heavy load. For this reason, new technological innovations are urgently needed to make up for the deficiencies of existing technologies. Through the voltage waveform of the discharge process, the influence of the off-line position of the pantograph-catenary arc on the overvoltage of the traction system and the corresponding suppression measures for the arcs are studied
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