铸钢用9MVA交流电弧炉炼钢过程电气运行特性研究  

Study on Electrical Operation Characteristics of 9 MVA AC EAF for Steel Casting in the Steelmaking Process

作　　者：李士琦[1] 谷林[1,2] 韩建军[1] 刘润藻[1] 郭晓东[1] 孙凤先[3] 李忠森[3] 闵兴海[3] 曲素君[3] 

机构地区：[1]北京科技大学冶金与生态工程学院,北京100083 [2]中国投资协会,北京100037 [3]鞍钢重型机械有限责任公司,辽宁鞍山114031

出　　处：《工业加热》2010年第1期31-34,共4页Industrial Heating

基　　金："十一五"国家科技支撑计划课题"用于三峡电站的70万kW大型水轮机组转轮铸件制造技术及工艺开发"(2007BAF08B01)

摘　　要：大型重型机器制造企业使用交流电弧炉炼钢提供钢液，制造锻造用钢锭和铸钢件。使用电气监测仪表，对鞍钢重型机械有限责任公司1“交流电弧炉炼钢过程中的电力参数进行了实测，得到72668个有效数据。分析表明，在1挡电压下电弧炉变压器利用率仅为67．79％。研究以二次侧工作电流为自变量，建立该电弧炉炼钢过程电气运行的非线性电抗模型，绘制电气运行特性曲线。研究结果表明，变压器在1，2，5挡电压下运行，工作电流提高至额定电流，输出的有功功率可分别提高35．6％，16．7％，21．3％。AC EAFs are used to provided steel to making ingot and steel castings by large heavy machine-manufacturing interprises. Power parameters in the steel-making process of No. 1 electric arc furnace in Ansteel Heavy Machinery Co., Ltd., were measured by electrical moni- toring instrument, and 72 668 valid data were obtained. It resulted that the utilization rate of transformer was only 67.79% under the first voltage tap. Taking the secondary side current of transformer as independent variable, the nonlinear reactance model of electrical operation in steelmaking process was established, and the electric operation characteristics curves were drawn. The results show that if the working current was increased to the rated current, the reactive power under the first voltage tap could be increased by 35.6%, while 16.7% under the second voltage tap, 21.3% under the fifth voltage tap.

关 键 词：交流电弧炉 炼钢 铸钢 电气运行特性 

分 类 号：TF741.5[冶金工程—钢铁冶金] TM924.4[电气工程—电力电子与电力传动]