一种新的电弧炉冲击负荷电磁暂态建模方法  

A Novel Electromagnetic Transient Modeling of Impact Load of Arc Furnace

作　　者：董梁[1] 郝治国[1] 苟静[1] 

机构地区：[1]西安交通大学电气学院,陕西省西安市710049

出　　处：《智能电网》2015年第8期690-695,共6页Smart Grid

摘　　要：电弧炉冲击负荷接入电网会对电力系统稳定、电能质量及电力设备安全性都有较大影响。基于电弧的物理特性和能量守恒定律,并将电弧弧长和电弧瞬时电流作为输入量,电弧电阻为状态变量,用全新的非线性微分方程建立反应交流电弧炉物理本质的时变弧阻模型;然后在PSCAD/EMTDC环境下通过函数模块的搭建来更直接和简洁地实现电弧炉模型;最后搭建电弧炉电气系统模型,将电弧炉模型作为负荷接入。通过仿真分析电流、电压特性来研究电弧炉的冲击负荷对接入电网所产生的影响。The access of impact load of electric arc furnace to power grid has great influence on power system stability, power quality and safety of electrical equipment. Based on the physical characteristics of arc and the law of energy conservation, a time-varying AC-arc resistance model which reflects the physical nature of AC arc furnace is built by a novel non-linear differential equation. This model takes arc length and instantaneous current as inputs, and arc resistance as state variable. Then, the novel model is built by function modules in the environment of PSCAD/EMTDC. Finally, the electrical system is built and electric are furnace model is connected to the system as a load. Simulation which analyzes current and voltage characteristics is to research the influence of impact load of electric arc furnace on power system.

关 键 词：电弧炉 冲击负荷 时变弧阻 等效模型 

分 类 号：TM924.4[电气工程—电力电子与电力传动]