R. Klempka, AGH University of Science and Technology, Faculty of Electrical Engineering, Automatics, Computer Science and Biomedical Engineering, Krakow, Poland The article presents an example of power supply system modernization in one of Polish steelworks. For the existing power system containing 3rd harmonics filters it was necessary to design a C-type filter for the 2nd harmonics. Two desig...

K ES SL ER /R EU TE RS /C O RB IS The power flows freely at West Virginia Alloys. This factory, tucked into the Kanawha River valley about 50 kilometres upstream from Charleston, West Virginia, is the second largest consumer of electricity in the state. It routinely pulls more than 120 megawatts of power from the grid, directing it into five electric arc furnaces that heat quartz to about 1,500...

This paper presents a discussion of the compensation of non-periodic currents such as those associated with arc furnaces. Based on the compensation objectives for different types of load waveforms, the energy storage requirements of the compensator are also presented. Further, basic concepts required in the definition of nonactive current are presented and illustrated by simulations for a varie...

synopsis-in this research, possible usage of eaf dust on cement is investigated. therefore, effects of addition of different percentages of eaf dust on the most important properties of cement such as hydration heat, water coefficient, viscosity, initial and final setting times, strength development and leachability of heavy metals were studied. results showed that eaf dust alters the characteri...

A considerable amount of mill scale is generated from steelmaking plants annually. Although some industries use it as raw material however, since it contains iron in the form of FeO, Fe2O3, and Fe3O4, it can be considered as a valuable metallurgical raw material for iron and steelmaking industry as well. Thus, the aim of this study was to evaluate the possibility, efficiency, and consequences o...

Based on a new definition of non-active current/power, this paper presents the application of a parallel active filter for the compensation of non-periodic currents. Analysis of the compensation characteristics required for a variety of non-periodic currents such as those associated with arc furnaces is presented. In addition, the corresponding current rating and energy storage requirements of ...

An EMTP-based arc furnace model was developed for evaluation of flicker concerns associated with supplying a large integrated steel mill as they go from one to two furnace operation and as system changes are implemented that will affect the short circuit capacity at the 230 kV power supply substation. The model includes a dynamic arc representation which is designed to be characteristic of the ...