Increase of Voltage Quality in Industrial Distribution Systems

Abstract

This paper deals with the solution of the issue of exceeding the permissible levels for long-term flicker effect Plt in industrial distribution systems. Flicker effect in distribution systems is often exceeded as a result of the connection of electric arc furnaces, which exhibits high variable electrical power in-take. The article shows the benefits of measures on the steel plants, the distribution system operator and the transmission system operator. The main benefits were the installation SVC device and reconstruction of substation 220/110 kV to substation 400/110 kV. Measurements have shown that the flicker has a major impact and configuration system 110 kV. In some cases, exceeded values flicker effect, and therefore the final part of the article deals with the possibility of deployment of active filters low power.