东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2008, Vol. 29 ›› Issue (10): 1398-1401.DOI: -

• 论著 • 上一篇    下一篇

一种测量电弧炉电流的新方法

毛志忠;尚海洋;马建军;   

  1. 东北大学流程工业综合自动化教育部重点实验室;辽宁移动通信有限责任公司;
  • 收稿日期:2013-06-22 修回日期:2013-06-22 出版日期:2008-10-15 发布日期:2013-06-22
  • 通讯作者: Mao, Z.-Z.
  • 作者简介:-
  • 基金资助:
    国家高技术研究发展计划项目(2007AA041401),2007AA04Z194)

New method to estimate arc current for electric arc furnace

Mao, Zhi-Zhong (1); Shang, Hai-Yang (1); Ma, Jian-Jun (3)   

  1. (1) Key Laboratory of Integrated Automation of Process Industry, Northeastern University, Shenyang 110004, China; (2) Beijing General Research Institute of Mining and Metallurgy, Beijing 100044, China; (3) Liaoning Mobile Communication Co. Ltd., Shenyang 110179, China
  • Received:2013-06-22 Revised:2013-06-22 Online:2008-10-15 Published:2013-06-22
  • Contact: Mao, Z.-Z.
  • About author:-
  • Supported by:
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摘要： 针对炼钢电弧炉电弧电流难测量的问题,在分析了变压器运行机理的基础上,通过建立电弧电流与电炉变压器一次侧三相负载电流、三相空载电流及三相功率因数之间的数学模型,提出了一种间接测量电弧电流的新方法.考虑到实际运行中变压器负载电流比空载电流大得多,在忽略变压器空载电流的前提下,导出了电弧电流与变压器一次侧三相电流、三相电压及三相总有功功率之间的简化模型.理论分析和计算机仿真验证了所提方法的有效性,为电弧电流的测量提供了新的途径.

关键词: 电弧炉, 变压器, 电弧电流, 建模, 仿真

Abstract: To solve the problem that the arc current of electric arc furnace (EAF) is difficult to measure, a new method is proposed to estimate the EAF arc current by developing a relational data model between the arc current, three-phase power factors and primary three-phase load/no-load current of EAF transformer of which the operating principle is discussed. In view of that the load current is much higher than the no-load one during the actual transformer operation, the model is simplified to describe the relation between arc current, total active power and primary three-phase current and voltages of EAF transformer, where the no-load current of transformer is ignored. The validity of the method proposed is verified by both theory analysis and simulation results.

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