基于PSCAD/EMTDC的多端柔性直流输电系统并行仿真计算  

Parallel Simulation of Multi-Terminal MMC-HVDC System Based on PSCAD/EMTDC

作　　者：薛英林[1] 吴方劼[1] 张涛[1] 杨一鸣[1] 刘高任 徐政[2] 

机构地区：[1]国网北京经济技术研究院,北京市102209 [2]浙江大学电气工程学院,杭州市310027

出　　处：《电力建设》2016年第2期10-17,共8页Electric Power Construction

摘　　要：对于基于模块化多电平换流器的多端柔性直流输电系统以及直流电网而言,传统基于串行结构的电磁暂态仿真软件已无法满足实际的计算需求,需要采用并行计算技术突破这一难题。PSCAD/EMTDC是世界上广泛使用的电力系统电磁暂态仿真软件,其最新版本已经全面支持并行计算。通过大模型拆分和多线程运算,该软件解决了由于模型过大而不能仿真或仿真效率低的问题,为实现多端柔性直流输电系统以及直流电网的快速仿真提供了可能。详细分析了PSCAD/EMTDC软件的运行机理及功能,对其新版本下的并行计算功能进行了介绍和研究。通过搭建模型进行仿真测试,探讨了并行计算的技巧。仿真结果表明,并行计算功能可以大大降低大规模电力系统的仿真时间,有效提升仿真分析效率。For the multi-terminal MMC （ modular multilevel converter）-HVDC system and DC grid, the traditional electromagnetic transient simulation programs based on serial structure have been unable to meet the demand of the actual calculation, so it is necessary to adopt parallel computing technology. As electromagnetic transient simulation software for power system, PSCAD/EMTDC is widely used in the world, and the latest version has full support for parallel computing. Through large model split and multi-threaded operation, this software can solve the problems of cannot being simulated or low simulation efficiency due to too large model, which can provide the possibility to achieve the fast simulations of multi- terminal MMC-HVDC system and DC grid. We analyze the operation mechanism and function and of PSCAD/EMTDC in detail, introduce and research the parallel computing function in its new version. Then we construct the model for the simulation test and discuss the technique of parallel computing. The simulation results show that the parallel computing function can greatly reduce the simulation time of large scale power system and effectively improve the efficiency of simulation analysis.

关 键 词：模块化多电平换流器(MMC) 并行计算 电磁暂态仿真 多端柔性直流输电系统 

分 类 号：TM743[电气工程—电力系统及自动化]