摘要
随着电力系统的日渐电力电子化,传统的电磁暂态仿真方法已难以满足快速求解的要求,而分网与并行计算是提高仿真效率的一个有效途径。针对现有电磁暂态仿真分网与并行方法的不足,该文提出一种基于半隐式延迟解耦特性的分网与并行方法,具有分网方式灵活,易于并行的特点。首先从系统状态空间方程出发,应用矩阵分裂技术,对系统状态变量进行分组。然后通过对不同变量组采用不同的积分形式,建立变量组之间的半隐式时间延迟格式,实现变量组之间的时间解耦;进而基于该半隐式延迟解耦格式,设计电磁暂态仿真的分网策略,构建相应的并行计算流程。最后通过算例验证所提方法的准确性和有效性。
With the increasing penetration ration of power electronics devices in power systems, traditional electromagnetic transient simulation(EMT) is difficult to meet the requirements of fast solutions. The parallel simulation is an effective way to improve simulation efficiency. After analyzing the shortcomings of the existing electromagnetic transient circuit partitioning and parallel simulation algorithms, firstly, based on the system state space equation, the matrix splitting technology was exploited to divide the system state variables into different groups and the time delay characteristics among those groups was researched by analyzing the different integration formats. Consequently, a semi-implicit latency decoupling and paralleling technology(SILDP) was proposed for the EMT. This method could realize the natural circuit partitioning without introducing additional capacitors or inductances, not limited to the length of the transmission line between subsystems, and did not also found an associated network among equivalent subsystems to solve it.Secondly, based on the SILDP, a circuit partitioning strategy and parallel calculation process, which could realize the different grained parallel computing, was researched and designed for EMT. Finally, two study cases verify the effectiveness of the proposed method.
作者
姚蜀军
庞博涵
吴国旸
戴汉扬
汪燕
韩民晓
YAO Shujun;PANG Bohan;WU Guoyang;DAI Hanyang;WANG Yan;HAN Minxiao(North China Electric Power University,Changping District,Beijing 102206,China;China Electric Power Research Institute,Haidian District,Beijing 100192,China)
出处
《中国电机工程学报》
EI
CSCD
北大核心
2022年第7期2486-2496,共11页
Proceedings of the CSEE
基金
国家自然科学基金项目(52077077)
国家重点研发计划项目(2016YFB0900600)。
关键词
电磁暂态仿真
半隐式延迟解耦
分网
并行计算
electromagnetic transient simulation(EMT)
semi-implicit latency decoupling
circuit partitioning
parallel computing
