变压器感应滤波技术抑制HVDC谐波不稳定机理研究  

Research on Inhibition of HVDC Harmonic Instability by Mechanism of Inductive Filtering Technology

作　　者：李世军[1] 杨佳意 夏湘滨 张蓉 郭盈 曾飞鹏 LI Shijun;YANG Jiayi;XIA Xiangbin;ZHANG Rong;GUO ying;ZENG Feipeng(College of Electrical&Information Engineering,Hunan Institute of Engineering,Xiangtan 411101,China;School of Electrical Engineering Shaoyang University,Shaoyang 422004,China;Hunan Deyi Electric Co.Ltd.,Xiangtan 411101,China;Xiangtan Huaxia Special Transformer Co.,Ltd,Xiangtan 411101,China)

机构地区：[1]湖南工程学院电气与信息工程学院,湘潭411104 [2]邵阳学院电气工程学院,邵阳422004 [3]湘潭华夏特种变压器有限公司,湘潭410211 [4]湖南德意电气有限公司,湘潭411101

出　　处：《湖南工程学院学报（自然科学版）》2022年第1期13-17,共5页Journal of Hunan Institute of Engineering(Natural Science Edition)

基　　金：湖南省教育厅科研资助项目(19A108);湖南省企业科技特派员计划项目(2021GK5042);长株潭国家自主创新示范区建设专项(CGYB20211019);湘潭市企业科技特派专家项目(CG-TPZJ20211019);湖南省教育厅教学改革项目(HNJG-2021-1350);教育部产学合作协同育人项目(201902145014、201902143006、2019003020);湖南工程学院博士科研启动基金项目(20RC002).

摘　　要：高压直流输电系统(HVDC)当交直流侧发生谐振或者换流变压器铁芯饱和时,将产生谐波不稳定的现象.针对HVDC系统谐波不稳定现象发生的机理,提出采用感应滤波技术抑制谐波不稳定的方案,并且基于PSCAD/EMTDC仿真软件建立基于感应滤波技术的高压直流输电仿真模型,计算了系统阻抗频率特性,并分析感应滤波技术对直流偏磁状态下减少谐波注入的抑制机理,通过改变系统阻抗频率,从而抑制谐波不稳定现象.理论推导与仿真结果验证了感应滤波技术对谐波不稳定现象具有良好的抑制效果.HVDC will produce harmonic instability when its AC/DC side resonates or the core of converter transformer is saturated.Aimed at the occurrence mechanism of the HVDC harmonic instability,the induc-tive filtering technology is introduced to restrain the harmonic instability.The HVDC simulation model based on the PSCAD/EMTDC and the system impendance frequency feature is caculated by the simulation model;and the inhibit mechanism of the harmonic wave injection under the condition of the DC bias is analysised.The theory derivation and the simulation result show that the inductive filtering technology has a good inhibit effect on the harmonic instability phenomenon.

关 键 词：高压直流输电 谐波不稳定 感应滤波 谐波抑制 

分 类 号：TM412[电气工程—电器]