Transient Effects at Power-Supply System of the Czech Railways from EMC Viewpoint

Abstract

The paper deals with the behavior of the traction power-supply system 25 kV, 50 Hz at the Czech Railways. Electrical conditions on a contact line affect electrical conditions in a feeding station. This relation represents galvanic coupling from EMC viewpoint. Explanation of transient effects during short-circuits at the contact line can be considered as the main problem. These effects can arise during a failure in a traction circuit. Therefore, the attention is turned to an adjustment protection design of the traction circuit. Simulation diagrams were created. The design can be utilizable for a feeding station with Filter-Compensation Equipment, which is designed for the EMI reduction.

Keywords

• Power-supply system
• power supply line
• Filter-Compensation Equipment
• feeding station
• contact line
• transient effect
• harmonic branch
• short-circuit