VSC-MTDC自适应下垂控制策略研究  

Research on VSC-MTDC Adaptive Droop Control Strategy

作　　者：赵巧玲 贾婷婷 张建明 刘凯娣 ZHAO Qiaoling;JIA Tingting;ZHANG Jianming;LIU Kaidi(Lanzhou Resources and Environment Voc-Tech University,Lanzhou,Gansu Province,730021 China;Lanzhou Yineng Electric Power Design Consulting Co.,Ltd.,Lanzhou,Gansu Province,730050 China)

机构地区：[1]兰州资源环境职业技术大学,甘肃兰州730021 [2]兰州倚能电力设计咨询有限公司,甘肃兰州730050

出　　处：《科技资讯》2025年第6期96-100,共5页Science & Technology Information

基　　金：甘肃省教育厅创新基金项目“电池储能系统在新型电力系统中的应用研究”(项目编号:2024A-266);校级科研能力提升计划(一般项目)“智能家居背景下家用有毒气体检测器的设计与实现”(项目编号:X2024A-18)。

摘　　要：多端柔性直流(Voltage Source Converter Multi-Terminal DC,VSC-MTDC)输电系统具有多个送端和受端,潮流控制灵活,在联结风电场、无源工业负荷方面有很大优势。其控制的关键和难点在于保障直流电压的稳定与实现多个换流站之间的协调配合。通过分析VSC-MTDC输电系统的稳态和暂态运行特性,提出一种下垂控制策略,其下垂系数能够跟随系统运行工况变化进行自适应调节,不仅实现了各个换流站功率的协调分配,避免了过载现象的出现,同时也加快了换流站对功率扰动的响应速度,改善了系统直流电压质量。The Voltage Source Converter Multi-Terminal DC(VSC-MTDC)transmission system has multiple sending and receiving ends,and its flow control is flexible,which has great advantages in connecting wind farms and passive industrial loads.The key and difficulty in its control lies in ensuring the stability of the direct current voltage and achieving coordinated cooperation among multiple converter stations.By analyzing the steady-state and transient operating characteristics of the VSC-MTDC system,this article proposes an adaptive droop control strategy,whose droop coefficient can be adaptively adjusted according to the needs of the operating conditions,which not only realizes the coordinated allocation of power among various converter stations and avoiding overloading;but also accelerates the converter station's response speed to power disturbances and improves the quality of the system's direct current voltage at the same time.

关 键 词：多端柔性直流输电 自适应 直流电压质量 功率裕度 协调配合 

分 类 号：TM732[电气工程—电力系统及自动化]