基于多核心处理器的分布式发电微网系统暂态并行仿真方法  

A Parallel Algorithm of Transient Simulation for Distributed Generation System Based on Multi-core CPU

作　　者：李鹏[1] 丁承第[1] 王成山[1] 高菲[2] 于浩[1] 李海涛[3] 黄小耘[3] 

机构地区：[1]智能电网教育部重点实验室(天津大学),天津市南开区300072 [2]中国电力科学研究院,北京市海淀区100192 [3]广东电网公司,广东省广州市510000

出　　处：《中国电机工程学报》2013年第16期171-178,4,共8页Proceedings of the CSEE

基　　金：国家自然科学基金项目(51207100);国家重点基础研究发展计划项目(973项目)(2009CB219700);国家高技术研究发展计划项目(863项目)(2011AA05A114)~~

摘　　要：分布式发电技术的多样性和微网运行的复杂性使得分布式发电微网系统中的动态过程更为复杂,必须借助相关的暂态仿真工具才能较为准确地了解其动态特性以及对外部电网产生的影响。然而,当微网及其所接入的配网规模庞大,控制复杂,并同时含有多种分布式电源和储能装置时,暂态仿真的计算性能是限制其应用的主要障碍。提出了一种面向分布式发电微网系统暂态仿真的并行计算方法,该方法首先将电气系统与控制系统的求解过程进行解耦,并利用各分布式发电单元中的分布式电源及其控制器模型在控制系统中建模求解时具有自然解耦的特点,进一步实现计算任务的分解,从而能够并行求解,加快了仿真计算速度。该方法简单、易于实现,可充分利用多核心处理器计算机的计算资源。考虑到分布式发电系统的典型结构,微网中的多个分布式发电单元在利用自然解耦关系降维时具有相近的计算规模,能够充分发挥并行计算的性能。The dynamics of a microgrid is greatly complex due to the diversity of distributed generation （DG） and the high nonlinearity within the system itself. Transient simulation tool plays a significant role in obtaining a full and detailed response under various operation conditions. However, the simulation capability and speed become limited with increased system size. This paper presented a parallel algorithm for microgrid transient simulation. The algorithm first decoupled the solution of the electrical and control systems using a one time-step delay. Then, an improvement algorithm on the interface accuracy and numerical stability was proposed using explicit integration or formulas. Finally, the control system was further decoupled according to its topology. The algorithms can be easily realized, and the computation loads are balanced by DG modeling. The effectiveness of the proposed algorithms is validated in a benchmark low-voltage microgrid.

关 键 词：分布式发电 微网 暂态仿真 并行算法 

分 类 号：TM74[电气工程—电力系统及自动化]