绿色钢厂光伏并网与谐波抑制的统一控制策略  

Unified Control Strategy of Photovoltaic Grid-connected and Harmonic Suppression in Green Steel Plant

作　　者：赵锟 武晓冬[1] 王正 席鹏辉 王麟斌 柳克鹏 ZHAO Kun;WU Xiaodong;WANG Zheng;XI Penghui;WANG Linbin;LIU Kepeng(School of Electric Power,Civil Engineering and Architecture,Shanxi University,Taiyuan 030031,China;Economic and Technological Research Institute,State Grid Shanxi Electric Power Company,Taiyuan 030021,China;Shenyang Liaozhong Huarun New Energy Co.,Ltd.,CR Power Holdings Co.,Ltd.,Shenyang 110000,China)

机构地区：[1]山西大学电力与建筑学院,太原030031 [2]国网山西省电力公司经济技术研究院,太原030021 [3]华润电力控股有限公司沈阳辽中华润新能源有限公司,沈阳110000

出　　处：《电力学报》2024年第5期405-412,共8页Journal of Electric Power

基　　金：2023年山西省研究生教育创新计划支持项目(2023AL05)。

摘　　要：针对“双碳”目标政策下绿色钢厂光伏发电系统的并网逆变器利用效率低及钢厂电网谐波污染严重的问题,以光伏并网逆变器为研究对象,提出了一种光伏并网与谐波抑制统一控制策略。该控制策略可对并网指令电流和谐波补偿指令电流进行跟踪控制,考虑到逆变器容量有限,可对特定谐波分量进行选择和限幅;根据不同工况下的谐波污染程度与外界光照条件的变化,设计了逆变器的不同工作模式,可同时实现了光伏并网与谐波抑制两种功能。从不同工作状态对该控制策略进行了仿真试验分析,仿真结果表明所提出的控制策略可以改善不同工况下的谐波抑制效果,同时也提高了并网逆变器的利用率,使有限的逆变器容量得到更合理的应用。Aiming at the low utilisation efficiency of the grid-connected inverter in the green steel plant PV power generation system under the“double-carbon”taget policy,and the serious harmonic pollution of the steel plant grid,a unified control strategy for PV grid-connection and harmonic suppression is proposed with the PV grid-connected inverter as the object of research.This control strategy can track and control the grid connected command current and harmonic compensation command current.Considering the limited capacity of the inverter,the specific harmonic components can be selected and limited.According to the degree of harmonic pollution and lighting conditions under different working conditions,different working modes of the inverter have been designed,which can simultaneously achieve the functions of photovoltaic grid connection and harmonic suppression.Simulation experiments are conducted to analyze the control strategy from different working states.The simulation results show that the proposed control strategy can improve the harmonic suppression effect under different working conditions,and also improve the utilisation rate of the grid-connected inverter,so that the limited inverter capacity can be more reasonably applied.

关 键 词：光伏并网 谐波抑制 绿色钢厂 交流电弧炉 

分 类 号：TM615[电气工程—电力系统及自动化]