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Effects of dynamic reactive compensation in arc furnace operation characteristics and its economic benefits
, Article IEEE/PES Transmission and Distribution Conference and Exhibition 2002 : Asia Pacific, Yokahama, 6 October 2002 through 10 October 2002 ; Volume 2, Issue ASIA PACIFIC , 2002 , Pages 1044-1049 ; Mokhtari, H ; Hejri, M ; Sharif University of Technology
2002
Abstract
For steel industries optimum operation with high efficiency is of the first importance. On the other hand, extra investments in the supply side of electric arc furnaces may have been seen as redundant cost. Therefore, to improve the system efficiency, devices such as SVCs or STATCOMs can be employed. In this paper, the benefits of dynamic shunt reactive compensation by SVCs in steel industries are investigated. It is shown that this operation leads to optimization in steel production process and is completely beneficial from economic point of view. Supply system of a typical arc furnace is simulated using MATLAB software and the effects of a compensator on the operating characteristics of an...
A new three phase time-domain model for electric arc furnaces using MATLAB
, Article IEEE/PES Transmission and Distribution Conference and Exhibition 2002 : Asia Pacific, Yokahama, 6 October 2002 through 10 October 2002 ; Volume 3, Issue ASIA PACIFIC , 2002 , Pages 2078-2083 ; Hejri, M ; Sharif University of Technology
2002
Abstract
This paper presents a new time domain model for electric arc furnaces using MATLAB, The model can simulate both nonlinear and time varying nature of such loads, which create flicker, harmonics, and voltage/current unbalance. In this model, Cassie and Mayr equations are used in three-phase mode and the effects of arc furnace transformer tap changer and flexible cables mutual inductances are considered. The proposed model takes into account the system inter-relation of parameters and arcing conditions as well