SR电弧炉熔化期供电优化模型

在分析附加电抗电弧炉熔化期电气特性的基础上,以电耗和通电时间最小为目标,建立了基于多目标混合整数非线性规划(MINLP)的供电优化模型,来指导熔化期供电策略的制定.模型充分考虑了附加电抗和供电电压以及电弧燃烧指数等对供电策略的影响,实现了附加电抗、供电电压以及工作电流三个参数的优化选取,避免了单纯确定工作电流方法制定供电策略的弊病.实际应用表明不但提高生产效率,而且提高了综合经济效益,对SR电弧炉的生产具有指导意义.

Optimized Power Supply Model in Melting Period of SR-EAF

Analyzing the electric characteristics of the melting period of supplemental reactor electric arc furnace(SR-EAF),an optimized power supply model is established on the basis of mixed-integer nonlinear programming(MINLP) model to minimize the power-on period and electric power consumption.The influences of the supplemental reactor,the output voltage of transformer and Arc Beam Index(ABI) on the power supply strategy are fully considered in this model where the current of electric arc,value of supplemental reactor and service voltage are all optimized.The power-on strategy decided by such an optimized model is proved better than that only by Maximum-Arc-Current method or Economic-Current method in practice.The optimized power supply model improves not only the power supply efficiency but the economic benefits in steel-making by SR-EAF.