摘要
针对传统柔性直流输电工程换流器桥臂开关频率高、桥臂模块间动态均压困难、系统能耗大等缺点,提出将模块化多电平控制技术应用于实际柔性直流输电工程。结合模块化换流器桥臂结构详细分析其充电过程及换流站电路结构,推导柔性直流有功功率、无功功率控制算法,并通过实际工业级控制平台完成换流器桥臂控制器设计;结合主流RTDS仿真平台搭建实际闭环仿真系统,完成工业级柔性直流控制器控制功能仿真测试并对仿真结果进行总结。整个设计过程对今后柔性直流输电控制保护系统工程化设计有实际借鉴意义。最后,对柔性直流推广应用进行展望。
As the traditional flex HVDC project has the disadvantage of high switching frequency、 the dynamic pressure balance be-tween the bridge arm modules and high energy consumption and so on, the modular multi-level technology is put forward to use in the flex HVDC project.In this paper, a detailed converter bridge arm topology is structured, and specific analysis of the charge-dis-charge process of sub-modules of the bridge arm.From the converter station topology, analysis the active power and reactive power algorithm, and design the converter controller based on the industrial control platform; Test and analyze the simulation result got from the actual loop simulation system based on the mainstream RTDS simulation platform.Throughout the design process, it is use-ful for the industrial flex HVDC control and protection system design.Finally give the prospect of the application of flex HVDC sys-tem.
出处
《云南电力技术》
2014年第6期40-43,57,共5页
Yunnan Electric Power
关键词
工程应用
工业控制
MMC
RTDS
DQ变换
解耦
industrial application
industrial control
modular muhi-level converter
real-time digital simulator
DQ Transforma-tion
decouple
作者简介
康建爽（1984），男，硕士，工程师，许继电气股份有限公司，主要从事高压直流输电系统、柔性直流输电系统相关领域控制保护系统研究（e—mail）kangkang9336@126．com。
