摘要
交流电弧炉是电力系统中常见的大功率负荷,它的非线性特性对电力系统产生诸多不利影响,比如电压闪变、电压波动、电流谐波、功率因数偏低等。为准确获得电弧炉对电能质量的影响,必须搭建精确的电弧炉仿真模型。普通电弧炉模型不仅准确度不高,而且由于模型参数意义不够明确导致不易调整,为评估电弧炉引起的电能质量问题带来诸多不便。本文在充分研究电弧炉工作原理以及各类时域、频域模型的基础上使用PSCAD软件搭建了一种新型的简单易行的电弧炉时域仿真模型,仿真了电弧炉引起的电流谐波、电压谐波、电压波动等各类电能质量问题。最后,仿真数据与现场实测结果的比较,证明了该模型的优越性。
AC arc furnace power load is common in power system, its nonlinear characteristics have many adverse effects on the power system, such as voltage flicker, voltage fluctuation, harmonic current and low power factor, etc. To accurately obtain the effect of electric arc furnace on the power quality of electric arc furnace, an accurate simulation model is necessary. This paper uses PSCAD software and builds a simple arc furnace time domain simulation model base on studying the working principle of electric arc furnace and all kinds of time domain, frequency domain model, obtains the voltage flicker caused by arc furnace, the current harmonics, voltage harmonic, voltage fluctuation and other kinds of power quality problems. Finally, simulation data are compared with the measured results,proves the superiority of the model.
出处
《电气技术》
2015年第11期29-32,共4页
Electrical Engineering
关键词
交流电弧炉
非线性特性
电能质量
时域
频域
AC arc furnace
nonlinear characteristics
power quality
time domain
frequency domain
