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采用电气特性优化模型,对河北钢铁集团150tLF炉进行了电气特性曲线分析,计算了1至4档电压下各工作点的电气参数,优化了现有的供电制度,达到了缩短精炼时间,提高LF热效率的目的。研究结果表明:该150tLF炉1至4档电压下的加热速度在2.46～4.25℃/min之间;通过优化供电制度,加热期间的功率因子由0.5提高到0.72,热效率由0.68提高到0.82,加热速度提高了0.93℃/min,吨钢成本可节约4元。
Based on the electrical characteristics optimization model, the electrical characteristics of Hebei Iron and Steel Group 150tLF furnace were analyzed. The electrical parameters of each working point from 1 to 4 stalls were calculated and the existing power supply system was optimized. The shortened refining time and LF The purpose of thermal efficiency. The results show that the heating speed of the 150tLF furnace is between 2.46 and 4.25 ℃ / min under the first to fourth gear steps. By optimizing the power supply system, the power factor during heating increases from 0.5 to 0.72 and the thermal efficiency increases from 0.68 to 0.82. Speed increased 0.93 ℃ / min, steel cost savings of 4 yuan.