中压中频感应加热炉谐波特性研究  

Research on the Harmonic Characteristics of Medium Voltage Medium Frequency Induction Heating Furnace

作　　者：陈龙超 梁纪峰 CHEN Longchao;LIANG Jifeng(Shandong Electric Power Engineering Consulting Institute Corp.,LTO,Ji'nan 250014,China;State Grid Hebei Electric Power Research Institute,Shijiazhuang 050021,China)

机构地区：[1]山东电力工程咨询院有限公司,山东济南250014 [2]国网河北省电力有限公司电力科学研究院,河北石家庄050021

出　　处：《河北电力技术》2022年第5期85-89,共5页Hebei Electric Power

基　　金：国家电网有限公司科技项目(5200-201924064A-0-0-00)。

摘　　要：随着中频电磁感应熔炼技术在炼铁行业的不断发展,其对电力系统造成的谐波危害也愈加显著,结合中压中频感应加热炉的电路结构、工作原理和谐波特征,对某机械轧辊厂10 kV中频炉开展了典型工况谐波实测,通过分析主导谐波电压与谐波电流,得出了特征次谐波电流的分布特点,采用调研的系统和设备参数进行了建模和仿真验证,仿真结果与现场调研实测结果保持一致,证明了通过仿真计算进行中频炉谐波特性评估具有工程可行性,为老旧中频炉设备改造和新建中频炉的电能质量预测评估提供了技术手段。With the development of the medium frequency electromagnetic induction melting technology in the iron industry,its harmonic harm to the power system becomes more and more significant.This article first analyzes the circuit structure,working principle and harmonic characteristics of the medium-voltage medium-frequency induction heating furnace.Harmonic measurements of typical working conditions were carried out for a typical 10 kV intermediate frequency furnace in a typical mechanical roll factory.By analyzing the dominant harmonic voltage and harmonic current,the distribution characteristics of characteristic sub-harmonic currents are obtained.The investigated system and equipment parameters are used for modeling and simulation verification.The simulation results show a high degree of consistency with the field survey results,which proved the practical feasibility of evaluating the harmonic characteristics of the intermediate frequency furnace through simulation calculation.It provides a tool for power quality prediction and evaluation of old or newly constructed intermediate frequency furnace equipment.

关 键 词：中频炉 电能质量 谐波电压 谐波电流 

分 类 号：TM924[电气工程—电力电子与电力传动]