Study on the Influencing Factors of Electrical Characteristics of Articulated Split-Zone Insulator Arc

Author:

Pan Like1,Xie Biaohuan2ORCID,Chen Liming1,Xing Tong1,Zhang Haibo1,Lu Yanming2,Song Yang2ORCID

Affiliation:

1. China Academy of Railway Sciences Corporation Limited, Beijing 100081, China

2. School of Electrical Engineering, Southwest Jiaotong University, Chengdu 611756, China

Abstract

The frequent occurrence of the pantograph–catenary (PC) arc seriously threatens the safe and stable operation of electric multiple units (EMUs). In order to investigate the primary factors affecting the electrical characteristics of the PC arc, this paper first reveals the mechanism of arc generation when EMUs leave the split-zone insulator according to the actual mechanical structure of the PC articulated split-zone insulator. Then, based on the Habedank black box arc model, considering the dynamic changes in arc length during the actual operation of EMUs, a numerical simulation model suitable for describing the PC articulated split-zone insulator arc is established. Furthermore, by comparing with existing research results, the effectiveness of the proposed model is verified. Next, a series of simulation experiments were conducted to analyze the influence of different operating parameters of the EMUs on the electrical characteristics of the PC arc. More importantly, the paper proposes using the entropy weight method to calculate the impact strength of different operating parameters of the EMUs on the arc duration time of the contact wire split-zone region. The research results of this paper can provide some technical references for reducing the erosion of the PC contact wire and slide caused by arcs when the EMUs pass through the split-zone insulator.

Funder

Natural Science Foundation Project of Sichuan Province

China Railway

China Academy of Railway Sciences Corporation Limited

Fundamental Research Funds for the Central Universities

open project of the State Key Laboratory of Traction Power

Publisher

MDPI AG

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