Title :
Voltage flicker analysis and mitigation - case study in ac electric arc furnace using PSCAD/EMTDC
Author :
Sharmeela, C. ; Uma, G. ; Mohan, M.R. ; Karthikeyan, K.
Author_Institution :
Dept. of Electr. & Electron. Eng., Anna Univ., Madras, India
Abstract :
Voltage flicker, a phenomenon of light intensity fluctuation is caused by large and rapid industrial load changes. The ac electric arc furnace is one of the major sources generating voltage fluctuations, deteriorating the power quality. In the present work, the voltage fluctuations produced by a 4 tone ac EAF and its effect on the 11 kV/0.566 kV distribution system is analyzed. The EAF load is modeled based on field measurement data obtained from the ac EAF at a modern steel manufacturing plant, Chennai, Tamil Nadu, India. Voltage flicker mitigation studies are carried out with and without static var compensator. Controlling the firing angle of the SVC eliminates the low frequency voltage oscillations due to EAF load currents in the distribution system. The PSCAD/EMTDC software is used for modeling and simulation and the results are presented.
Keywords :
EMTP; arc furnaces; distribution networks; oscillations; power supply quality; power system CAD; static VAr compensators; 0.566 kV; 11 kV; EMTDC software; PSCAD software; ac electric arc furnace; distribution system; light intensity fluctuation; low frequency voltage oscillations; modern steel manufacturing plant; power quality; static var compensator; voltage flicker analysis; AC generators; EMTDC; Furnaces; Load modeling; PSCAD; Power generation; Power quality; Power system modeling; Static VAr compensators; Voltage fluctuations;
Conference_Titel :
Power System Technology, 2004. PowerCon 2004. 2004 International Conference on
Print_ISBN :
0-7803-8610-8
DOI :
10.1109/ICPST.2004.1460084
