CAJ | 학술논문

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。
전호로충격부하접입전망회대전력계통은정、전능질량급전력설비안전성도유교대영향。기우전호적물리특성화능량수항정률，병장전호호장화전호순시전류작위수입량，전호전조위상태변량，용전신적비선성미분방정건립반응교류전호로물리본질적시변호조모형；연후재PSCAD/EMTDC배경하통과함수모괴적탑건래경직접화간길지실현전호로모형；최후탑건전호로전기계통모형，장전호로모형작위부하접입。통과방진분석전류、전압특성래연구전호로적충격부하대접입전망소산생적영향。
Theaccess 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.