多端柔性直流系统启动回路设备选型与启动策略  

Start-up Circuit Device Selection and Start-up Strategy for VSC-MTDC Power System

作　　者：卢毓欣 赵晓斌 黄莹 黎小林 

机构地区：[1]南方电网科学研究院,广州510080

出　　处：《南方电网技术》2015年第4期68-74,共7页Southern Power System Technology

基　　金：国家高技术研究发展计划(863计划)项目(2011AA05A102)~~

摘　　要：启动回路设备选型及启动策略设计是多端柔性直流系统设计的关键问题。对于采用模块化多电平技术的多端柔性直流系统,通过对启动充电不控整流过程的理论分析,结合PSCAD/EMTDC仿真计算验证,提出了多端柔直系统启动电阻、联接变压器中性点电阻及启动电阻旁路开关等设备的技术要求。分析了设备参数与不同运行方式、启动策略的关系,提出了各种启动方式下的优化启动策略。研究结论已被南澳多端柔直示范工程采用。Selection of the start-up circuit device and start-up strategy design are key issues of multi-terminal VSC-HVDC（ VSC-MTDC） system design. Technical requirements of the devices such as pre-insertion resistor,transformer valve-side neutral resistor and pre-insertion resistor by-pass switch are proposed for VSC-MTDC power transmission system based on modular multi-level converter（ MMC） technology through theoretical analysis of the uncontrolled rectification start-up charging process,and verified by PSCAD /EMTDC simulation. The relevance of the device parameters with different operation mode and start-up strategy is analyzed and optimized start-up strategies are presented for various operation modes. The research conclusions have been adopted by Nan＇ao pilot VSCMTDC project.

关 键 词：多端柔性直流 不控整流 运行方式 启动策略 启动电阻 中性点电阻 旁路开关 

分 类 号：TM721.1[电气工程—电力系统及自动化]