Analysing the One-phase Loads Influence on the Three-phase Discharge Lamps Work in the 380/220 V Network

Abstract

One of the most important features of up-to-date technical progress in power engineering is a continuous increase of so called non-linear loads in amount and power. Such loads in electrical network result in high harmonics voltage production which causes a number of negative effects (voltage losses, network lines isolation core overheating etc.) in electrical network equipment functioning. The valve inverter and regulating devices are the most widely used among non-linear loads. These devices operate at 380/220 V.Such a tendency is typical of any powersupply systems, for example industrial, urban, rural and others. However the combination of high harmonics and load unbalance is good for the stable operation of some consumers which are critical to the supply voltage level.That is why the necessity to the reconsideration of the tradition approach to the analyzing the load unbalance and high harmonics on the 380/220 V network and the adjacent consumers operation.