计算机科学
瞬态(计算机编程)
解算器
组分(热力学)
趋同(经济学)
电力系统
时域
电力传输
并行计算
传输(电信)
并行算法
输电线路
功率(物理)
计算机工程
工程类
电气工程
物理
经济
操作系统
热力学
电信
程序设计语言
量子力学
经济增长
计算机视觉
作者
Tianshi Cheng,Tong Duan,Venkata Dinavahi
标识
DOI:10.1109/oajpe.2020.3012636
摘要
Parallel-in-time methods are emerging to accelerate the solution of time-consuming problems in different research fields. However, the complexity of power system component models brings challenges to realize the parallel-in-time power system electromagnetic transient (EMT) simulation, including the traveling wave transmission lines. This paper proposes a system-level parallel-in-time EMT simulation method based on traditional nodal analysis and the Parareal algorithm. A new interpretation scheme is proposed to solve the transmission line convergence problem. To integrate different kinds of traditional EMT models, a component-based EMT system solver architecture is proposed to address the increasing model complexity. An object-oriented C++ implementation is proposed to realize the parallel-in-time Parareal algorithm based on the proposed architecture. The results on the IEEE-118 test system show 2.30x speed-up compared to the sequential algorithm under the same accuracy with 6 CPU threads, and a high parallel efficiency around 40%. The performance comparison of various IEEE test cases shows that the system's time-domain characteristics determine the speed-up of Parareal algorithm, and the delays in transmission lines significantly affect the performance of parallel-in-time power system EMT simulations.
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