混合级联特高压直流输电系统方案设计及动模试验验证  

Schematic Design of Hybrid Cascaded Ultra HVDC and Its Modification in Dynamic Model Experiment

作　　者：刘泽洪 马为民 王绍武 种芝艺 黄勇 郭贤珊 张进 乐波 田杰[3] 肖鲲 许冬 刘杉 LIU Zehong;MA Weimin;WANG Shaowu;CHONG Zhiyi;HUANG Yong;GUO Xianshan;ZHANG Jin;YUE Bo;TIAN Jie;XIAO Kun;XU Dong;LIU Shan(State Grid Corporation of China,Xicheng District,Beijing 100031,China;State Grid Economic and Technological Research Institute Co.,Ltd.,Changping District,Beijing 102209,China;Nanjing NARI-relays Electric Co.,Ltd.,Nanjing 211100,Jiangsu Province,China;Global Energy Interconnection Research Institute Co.,Ltd.,Changping District,Beijing 102209,China)

机构地区：[1]国家电网有限公司,北京市西城区100031 [2]国网经济技术研究院有限公司,北京市昌平区102209 [3]南京南瑞继保电气有限公司,江苏省南京市211100 [4]全球能源互联网研究院有限公司,北京市昌平区102209

出　　处：《电网技术》2021年第3期1214-1222,共9页Power System Technology

基　　金：国家电网有限公司科技项目(混合级联特高压直流输电成套设计核心技术研究)。

摘　　要：提出了同站布置的混合级联特高压直流输电技术,并设计了该拓扑的直流滤波器、可控避雷器和快速旁路开关等关键设备及混合级联协调控制策略。为验证该技术的工程可行性,搭建了含真实一次和二次系统的低电压等级的动模平台,该动模平台不仅包含直流线路、换流阀、换流变、控保装置等常规直流设备,而且包含可控避雷器和快速旁路开关等特有设备,可准确模拟出该拓扑的实际特性。在动模平台上验证了系统的启停、阀组投退、故障穿越特性,动模平台的试验结果表明,混合级联直流方案启停平滑、运行方式灵活、故障穿越可靠,符合设计指标,具备工程可行性。1:A hybrid cascaded ultra HVDC transmission technology integrated in one station layout is proposed in this paper,and the key equipments such as the DC filters,the controllable arresters and the fast bypass switches,and the coordinate control strategy are designed.In order to verify the engineering feasibility of this technology,this paper builds a low-voltage dynamic model platform with the real primary and secondary systems.The dynamic model platform not only includes the conventional DC equipments as the DC lines,the converter valves,the converter transformers,the control and protection devices and others,but also includes some special equipments such as the controllable arresters and the fast bypass switches,so it can accurately simulate the actual characteristics of the topology.The system characteristics of start-stop,single converter switching and fault ride-through are verified on the dynamic model platform.The test results show that the hybrid cascaded ultra HVDC system has smooth start-stop,flexible operation mode,reliable fault ride-through capabilities.It conforms to the design indexes and has engineering feasibility.

关 键 词：特高压直流 混合级联 可控避雷器 动模 阀组投退 故障穿越 

分 类 号：TM721[电气工程—电力系统及自动化]