Analysis of the monitoring data of geomagnetic storm interference in the electrification system of a high‐speed railway. Issue 10 (10th October 2016)

• Record Type: Journal Article
• Authors: Liu, Lianguang; Ge, Xiaoning; Zong, Wei; Zhou, You; Liu, Mingguang
• Is Part Of: Space weather. Volume 14:Issue 10(2016:Oct.)
• Page Start: 754
• Page End: 763
• Publication Date: 2016-10-10
• Subjects: Geomagnetic Storm -- High‐Speed Railway -- GIC Monitor -- 7934 -- 7904; Space environment -- Periodicals; 551.509992
• DOI: 10.1002/2016SW001411
• Languages: English
• ISSNs: 1542-7390

Abstract

Abstract: To study the impact of geomagnetic storm on the equipment of traction electrification system in the high‐speed railway, geomagnetically induced current (GIC) monitoring devices were installed in the Hebi East traction power supply substation of the Beijing‐Hong Kong Dedicated Passenger Line in January 2015, and GICs were captured during the two geomagnetic storms on 17 March and 23 June 2015. In order to investigate the GIC flow path, both in the track circuit and in the traction network adopting the autotransformer feeding system, a GIC monitor plan was proposed for the electrical system in the Hebi East traction power supply substation. This paper analyzes the correlation between the GIC captured on 17 March and the geomagnetic data obtained from the Malingshan Geomagnetic Observatory and presents a regression analysis between the measured GIC and the calculated geoelectric fields on 23 June in the high‐speed railway. The maximum GICs measured in the track circuit are 1.08 A and 1.74 A during the two geomagnetic storms. We find that it is necessary to pay attention on the throttle transformers and track circuits, as the most sensitive elements responding to the extreme geomagnetic storms in the high‐speed railway. Key Points: GIC monitor plan was proposed for the electrical system in Hebi East traction power supply substation GIC was first captured in the electrification system of high‐speed railway in China Track circuits and integrated earthing system will be impacted by geomagnetic storm in high‐speed railway