一种无谐振C型滤波器的优化设计方法  

An optimal design method of the resonant-free C-type filter

作　　者：徐方维[1] 贾俊炜 郭凯 徐琳 陈家乐 卢煜国 XU Fangwei;JIA Junwei;GUO Kai;XU Lin;CHEN Jiale;LU Yuguo(College of Electrical Engineering,Sichuan University,Chendu 610065,China;State Grid Sichuan Electric Power Company Research Institute,Chendu 610094,China)

机构地区：[1]四川大学电气工程学院,四川成都610065 [2]国网四川省电力公司电力科学研究院,四川成都610094

出　　处：《电力工程技术》2024年第6期183-193,共11页Electric Power Engineering Technology

基　　金：国家自然科学基金资助项目(52277113)。

摘　　要：现有无功补偿电容谐振抑制方法通常将无功补偿电容配置为无谐振C型滤波器,以降低谐振带来的谐波电压放大与滤波器有功损耗。但在抑制低频谐振时,无谐振C型滤波器的元件参数可选择范围较小,难以在实现低频谐振抑制的同时兼顾滤波器配置成本。针对这一问题,文中提出一种无谐振C型滤波器优化设计方法。首先,设计一种改进C型滤波器结构,在传统C型滤波器结构中增加低频谐振抑制单元,消除滤波器潜在低频谐振点;然后,建立计及滤波器配置成本、有功损耗、谐振抑制性能及元件参数选择范围的滤波器元件参数配置模型,求解改进C型滤波器元件参数最优值。最后,通过仿真对比证明,改进C型滤波器在控制配置成本与有功损耗的基础上,能明显降低谐波放大系数,具有更好的谐振抑制性能。Configuring a reactive power compensation capacitors as a resonant-free C-type filter is a common method to suppress reactive power compensation capacitors resonance.It can also be used to reduce the amplification of harmonic voltage caused by resonance and the power loss of the filter.However,the parameter selection range of resonant-free C-type filters is limited when the low frequency harmonic resonance needs to be suppressed,making it challenging to achieve low frequency harmonic resonance suppression economically.To address this issue,an optimal design method of a resonant-free C-type filter is proposed.Firstly,an improved C-type filter structure is designed to eliminate potential low frequency resonance points by incorporating a low frequency harmonic resonance suppression unit into the C-type filter.Next,a configuration model of the filter′s element parameter is established,which takes into account the cost,power loss,the performance of resonant suppression and the selection range of element parameters.The optimal value of the improved C-type filter element parameters can be determined by the configuration model.The simulation and comparison results show that the filter designed by the method in this paper reduces the harmonic amplification ratio significantly and it has better performance of resonant suppression based on controlling the cost and power loss.

关 键 词：C型滤波器 无谐振设计 电容器谐振抑制 自适应差分进化算法 元件配置成本 滤波器优化设计 

分 类 号：TM712[电气工程—电力系统及自动化]