TITLE:
Analysis of the Electric Locomotives Neutral-section Passing Harmonic Resonance
AUTHORS:
Xiaofeng Jiang, Zhengyou He, Haitao Hu, Yangfan Zhang
KEYWORDS:
Neutral-section passing; Harmonic Resonance; Overvoltage; Equivalent Modeling; Simulation Analysis
JOURNAL NAME:
Energy and Power Engineering,
Vol.5 No.4B,
October
29,
2013
ABSTRACT:
For the further analysis and
suppression of the electric locomotives neutral-section passing overvoltage, on the basis of
theoretical analysis of the neutral-section passing harmonic resonance
conditions, this paper establishes simplified harmonic resonance simulation
models of the electric locomotives neutral-section passing using MATLAB/Simulink,
and makes the overvoltage simulation analysis of the existing electric
locomotives neutral-section passing system in the event of a harmonic resonance.
Results show that when the system harmonic resonance occurs, the operating
overvoltage of the neutral-section passing is serious intensified by the
overvoltage of the harmonic resonance, which will make the voltage of the
pantograph collector head exceeding 100kV. This amplitude of the overvoltage
will breakdown the air gap, which will be a serious threat to the safety
operation of the electric railway. However, this kind of neutral-section passing overvoltage hasn’t
cause the attention in the field and theoretical studies, which need more
analysis and verification in the further study.