The electromagnetic interferance caused by high voltage power lines along the electrical railway equipment

Abstract

The identification of risks linked to electromagnetic compatibility (EMC) in the electric railway is a major concern in identifying EMC problems and analyzing the unintentional various external disturbing sources as well as the probability of occurrence of interference, the level of interference along the railway system. The purpose of this analysis is to determine the electromagnetic interaction coupling generated by the high voltage (HV) lines located along the railway line by analyzing the voltage induced in the signaling transmission cables such as the European rail traffic management system/European train control system (ERTMS/ETCS) through the multi-conductor transmission line (MTL) theory which may have an impact on the transmitting information. Dubanton method and approximate calculation will be applied and simulated through COMSOL Multiphysics tool in order to analyze if the protection distance and coupling conditions are respected by the railway standards.

Methods and instruments for stray current verification in DC rapid transit and railway systems

“…A suitable CMRR is also necessary, since such IPs (between a hundred mV to about 1 V) must be measured under a significant induction on connecting wires, caused by power cables and traction circuit [41], [42], or overhead power lines [43]. A minimum CMRR at mains frequency is 80 dB: a 100 V induced voltage translates into a 10 mV superposed ac noise, that agrees with the resolution of the ASTM C876 [40].…”

Conducted emission investigation of infant incubator heating control mode

“…Many studies have been carried out to overcome electromagnetic interference in several areas [18]- [21]. Furthermore, the EMI can propagate by radiation through the air and by conduction mechanism through a conductive material [7], [22]. In hospitals, several propagation mechanisms of EMI can occur such as via a coupling through electrical installation, a radiative coupling, and crosstalk between noisy mains cables and data cables [10].…”