ЭЛЕКТРИЧЕСКИЕ ПОТЕРИ В КОНТАКТНОЙ СЕТИ ЖЕЛЕЗНЫХ ДОРОГ ПРИ ЭКСПЛУАТАЦИИ ЭЛЕКТРОВОЗОВ ПЕРЕМЕННОГО ТОКА

Abstract

The purpose of this work is a quantitative definition of electric power loss in a railway contact network. Electric locomotive power supply is carried out from traction substations through a contact network. During electric locomotive operation power losses take place in a contact network as a result of which voltage decreases on the electric locomotive pantograph and also decreases electric motive power efficiency. Such losses of power and voltage depend upon electric locomotive location in an inter-substation area, its power realized and a power factor. At the same time current consumed by an electric locomotive contains higher harmonics which can cause additional losses in a contact network. For the definition of a loss level there was carried out a computer modeling with the use of Cadence OrCAD program. During modeling there was simulated an electric locomotive operation in a contact network area. The modeling results have shown to what extent a current form of an electric locomotive differs at different quality of power consumption. The quantitative values of the computation characterize the level of power and voltage losses at different forms of power consumption. It is proved that the use of the ideal compensator for a phase alignment is less efficient than the use of the passive compensator of jet power. It tells of that along with the phase alignment it is necessary to pay a particular regard to the harmonic distortion of power consumption.