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 ...

Frequent Switching of arc furnace in steel company causes a great effect on the insulation of arc furnace transformer winding which in turn may causes a shutdown of production for long periods of time. Therefore, it is necessary to study and analyze the causes of these outages and design an adequate protective device. In this paper the transient overvoltage resulted from vacuum circuit breaker ...

V. P. Karasyov, P. V. Kovalev, A. Z. Issagulov, V. Yu. Kulikov, Y. P. Chsherbakova. Saint-Petersburg State Polytechnic University, SaintPetersburg, Russia, Karaganda State Technical University, Karaganda, Kazakhstan There is considered the power operating mode of a high-power arc steelmaking furnaces (ASMF) in the period of the flat bath. It is revealed that electric energy is mainly spent for ...

For three-phase six-electrode submerged-arc furnaces, a technical solution has been proposed that allows to determine the contour of an electrode with arc discharge by analyzing harmonic spectrum offset voltage zero point, created artificially. Researches carried out on industrial furnace which melts ferronickel, have confirmed possibility using method for monitoring and controlling operating m...

Due to the dynamic nature of load changes, arc devices are receivers that generate disturbances network affect power quality. The main disturbance generated by these voltage fluctuations. One effects fluctuations is flicker light caused lighting receivers. article presents an analysis changes indicators measured in networks supplying furnaces. propagation lines was analyzed. parameters influenc...