中压柔性直流配电系统故障暂态仿真研究  

Fault Transient Simulation of Middle-voltage MMC-HVDC Distribution System

作　　者：朱童[1] 赵宇明 余占清[1] 刘国伟 陈名 黎小林 许树楷 曾嵘[1] 吕纲[1] 陈政宇[1] 张翔宇[1] 

机构地区：[1]清华大学电机系电力系统国家重点实验室,北京100084 [2]南方电网深圳供电局,深圳518001 [3]南方电网科学研究院,广州510080

出　　处：《高压电器》2015年第11期26-32,40,共8页High Voltage Apparatus

基　　金：国家863高技术研究发展计划(2013AA050103)~~

摘　　要：文中针对±10 k V/1 k A柔性直流配电系统进行仿真分析,包括直流系统仿真参数设计、结构选取,配合直流断路器的应用,利用PSCAD/EMTDC仿真软件分析了极间短路故障时直流系统暂态变化的情况,并结合系统侧参数分析了各因素对暂态过程的影响。仿真结果表明,系统参数对故障暂态电压电流的变化有较大的影响;直流断路器可以快速开断故障电流,限制电流峰值,对系统参数设置和器件及设备选型有一定的参考价值。This paper has focused on the ±10 kV/1 kA MMC-HVDC distribution system simulation and analysis.Parameters and the topology of the middle-voltage DC system simulation model have been proposed. With theapplication of DC current breaker, the interpoles fault transient situations of DC system have been analyzed inPSCAD/EMTDC. Then the influence of various system parameters has been discussed. The results show that systemparameters have a greater impact on changes in fault transient voltage and current; DC breaker can fast interruptthe fault current and limit the peak value of the current. It will be a valuable reference for the system parameterssettings and equipment selection.

关 键 词：中压柔性直流配电系统 直流断路器 暂态过程 仿真分析 

分 类 号：TM721.1[电气工程—电力系统及自动化]