IIAE CONFERENCE SYSTEM, The 5th IIAE International Conference on Industrial Application Engineering 2017 (ICIAE2017)

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Characteristics and Behavior of Transient Current during Multiple Lightning strokes on a Train in Thailand by using ATPDraw
Kelvin Melckzedeck Minja, Pius Victor Chombo, Narupon Promvichai, Uthen Leeton, Boonruang Marungsri

Last modified: 2017-02-22

Abstract


This study describes characteristics and behavior of transient current during Multiple lightning strokes on train’s pantograph of 2×25 kV AC, 50 Hz Catenary Contact System. 25 kV AC, 50 Hz Catenary Contact System on double-track elevated railway system which connects Suvarnabhumi Airport to central Bangkok (Phayathai, Makkasan) was used in the study. The characteristics of transient current in term of its magnitude, front times and tail times affected by Multiple lightning strokes were studied. The assumption of studies based on the return Multiple lightning strokes current ranging 1–200 kA, front time of multiple lightning strokes between 1–3 μs, elevated pole resistance of 50 Ω and grounding resistance of 5 Ω. The Behaviour of transient current when the pantograph is at the Mast (4th Mast) for Case 1 and at the mid-span of Masts (3rd and 4th Masts) for Case 2 were also studied. The Catenary Contact System on elevated railway system with a train and multiple lightning strokes were modeled in ATPDraw software. Transient current of negative multiple lightning strokes showed flashovers across insulators in any magnitude and waveform for Case 1 and Case 2. The improved protection for Catenary Contact System should consider the effects of negative multiple lightning strokes.


Keywords


Catenary; Elevated pole; Multiple lightning strokes; Flashover; ATPDraw

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