The effects of faults at the distribution systems on the traction power supply systems

The paper deals with comparing the reliability and continuity of supply to traction power systems and compare it with the level of deliveries to all other customers in the distribution area of ČEZ Distribuce. It examines the causes of the disruption of clarity and also shows to the map. The present electric rail transport is very dependent on the continual electrical energy supply both for transport infrastructure and also for electric vehicles and units. In the case of traction energy supply faults the transport of electric drive vehicles will be stopped and the diesel rail vehicles have to be used for rail transport. This situation is incomparable with road transport due to many aspects. These traction power supply systems are highly dependent on the properties of distribution systems. For this reason, the stricter conditions in comparison with industrial systems are required. The characteristic consumptions and their variabilities during tens of seconds at traction systems, which is given by transport technology and management, are represented completely different sources of interference for other devices and systems.