大容量直流电弧炉接入对电网谐波的影响分析  

Research on the Influence of Large Capacity DC Arc Furnace Connection on Power Grid Harmonics

作　　者：苏灿 张智远 周文 孟良 刘彤 SU Can;ZHANG Zhiyuan;ZHOU Wen;MENG Liang;LIU Tong(State Grid Hebei Electric Power Research Institute,Shijiazhuang 050021,China;China Railway Electric Industry Co.,Ltd.,Baoding 071000,China)

机构地区：[1]国网河北省电力有限公司电力科学研究院,河北石家庄050021 [2]中铁电气工业有限公司,河北保定071000

出　　处：《河北电力技术》2024年第2期33-40,共8页Hebei Electric Power

基　　金：国网河北能源技术服务有限公司科技项目(TSS2021-10)。

摘　　要：大容量直流电弧炉是高功率的非线性负荷,运行时会产生大量谐波,影响电网的电能质量。基于某钢铁集团130t直流电弧炉配电网架构及参数,建立了含治理装置的大容量直流电弧炉的动态仿真模型,分析了大容量直流电弧炉的谐波发射特性及其影响因素。通过现场实测和仿真结果,分析了大容量直流电弧炉接入电网后的谐波特性,验证了静止无功补偿器(SVC)的滤波效果,为直流电弧炉接入电网后的监督和治理提供了参考。Large capacity DC arc furnaces are high-power nonlinear loads that generate numerous harmonics during operation,impacting the power quality of the power grid.This article,using the distribution network architecture and parameters of a 130-ton DC arc furnace,establishes a dynamic simulation model for a large capacity DC arc furnace with power quality control devices.The harmonic emission characteristics and influencing factors of the large capacity DC arc furnace are analyzed.Based on on-site measurements and simulation results,the harmonic characteristics of the large capacity DC arc furnace connected to the power grid are analyzed.The filtering effect of the Static Var Compensator governance device is verified,providing a reference for the supervision and governance of DC arc furnace.

关 键 词：直流电弧炉 谐波 电能质量 静止无功补偿器 

分 类 号：TM711[电气工程—电力系统及自动化]