考虑网-荷交互影响的电窑炉谐波发射特性研究  

Study on Harmonic Emission Characteristics of Electric Kilns Considering Network-load Interaction

作　　者：江挺 何伟 朱明星[1] 孙旻 JIANG Ting;HE Wei;ZHU Mingxing;SUN Min(College of electrical engineering and automation,Anhui University,Hefei 230601,China;State Grid Jiangxi Electric Power Researth Institute,Nanchang 330006,China)

机构地区：[1]安徽大学电气工程与自动化学院,合肥230601 [2]国网江西省电力科学研究院,南昌330006

出　　处：《电力电容器与无功补偿》2020年第3期112-118,共7页Power Capacitor & Reactive Power Compensation

基　　金：国家电网公司总部科技项目(52182018000H)。

摘　　要：以电窑炉为代表的电能替代产品规模化接入电网,引起配电网谐波含量超标等一系列电能质量问题亟待解决。本文首先根据实际调研结果阐述了电窑炉系统的工作原理,通过对比理论分析结果和实际测试数据得到两者谐波发射特性的差异,并结合仿真模型从网-荷交互影响的角度探究了差异存在的原因。在上述模型的基础上,研究了理想工况、背景谐波和系统三相不平衡3个方面对电窑炉谐波发生量的影响,最后总结出网-荷交互影响下电窑炉的谐波发射特性,对电能替代项目的深入研究具有一定的借鉴意义。With large scale access electric power substitution products represented by electric kilns to the grid,such a series of power quality problems as excessive harmonic content in the distribution grid needs solving.In this paper,the working principle of the electric kiln system is described firstly in accordance with the actual investigation results.The difference of harmonic emission characteristic of them is obtained by comparing theoretical analysis result and actual measurement data and the reason of the difference is explored from the point of view of network-load interaction together with combination with simulation model.The influence of such three aspects as ideal condition,background harmonics and three-phase unbalance of system are studied on the basis of above model.Finally,the harmonic emission characteristic of electric kiln under influence of network-load is summarized,which has definite reference significance for the deep study of electric power substitution products.

关 键 词：电能替代 电窑炉 电能质量 交互影响 谐波发射特性 

分 类 号：TM711[电气工程—电力系统及自动化]