新型电力系统电磁暂态加速仿真技术

doi:10.16180/j.cnki.issn1007-7820.2024.03.003

摘要/Abstract

摘要：

为解决新型电力系统电磁暂态仿真时由于系统拓扑结构复杂、电力电子开关器件较多以及仿真机单核计算能力不足导致的仿真效率低下、仿真难度大等问题,文中采用理想变压器模型分割算法将大规模新型电力系统模型分割成若干子系统,实现了大系统的解耦和降阶,有效减少了仿真时整个系统作为一个状态空间系统矩阵的运算量。为进一步减轻单个处理器的计算负担,利用CPU(Central Processing Unit)多核并行技术设计一款在裸机环境下高效并行运算的加速仿真平台UREP300。将分割后的模型载入UREP300进行加速仿真实验,同时与基于MATLAB/Simulink的原模型离线仿真进行对比。实验结果表明,融合理想变压器模型分割与多核并行运行的加速仿真技术能够在保障仿真精度的同时将仿真速度提升至原来的586倍,可显著提高仿真效率,适用于大规模新型电力系统的仿真工作。

关键词: 新型电力系统, 电磁暂态, 加速仿真, 模型分割, 理想变压器模型法, 裸机编程, 多核并行, 多核调度

Abstract:

In order to solve the problems of low simulation efficiency and difficulty in simulation in the electromagnetic transient simulation of new power system due to complex system topology, numerous power electronic switching devices and insufficient single-core computing capability of simulator, this study uses the ideal transformer model segmentation algorithm to divide the large-scale new power system model into several subsystems. The decoupling and order reduction of the large system are realized and the computation of the whole system as one state-space system matrix is effectively reduced during simulation. In order to further reduce the computing burden of a single processor, an accelerated simulation platform UREP300 for efficient parallel computing in the bare-metal environment is designed by using multi-core CPU(Central Processing Unit) parallel technology. The segmented model is loaded into UREP300 for accelerated simulation experiment and compared with the offline simulation of the original model based on MATLAB/Simulink. The experimental results show that the acceleration simulation technology combining the ideal transformer model segmentation and multi-core parallel operation can not only guarantee the simulation accuracy but also improve the simulation speed to 586 times of the original, which can significantly improve the simulation efficiency, and is suitable for large-scale new power system simulation work.

Key words: new-type power system, electromagnetic transient, acceleration simulation, model segmentation, ideal transformer method, bare-metal programming, multi-core parallel, multi-core scheduling

中图分类号:

TP27

聂春芳, 郝正航, 陈卓, 何朴想. 新型电力系统电磁暂态加速仿真技术[J]. 电子科技, 2024, 37(3): 18-25.

NIE Chunfang, HAO Zhenghang, CHEN Zhuo, HE Puxiang. Research on Electromagnetic Transient Acceleration Simulation Technoloy of New-Type Power System[J]. Electronic Science and Technology, 2024, 37(3): 18-25.

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仿真条件	使用CPU核数	仿真步长/μs	仿真时间/s	实际计算时间/s
不使用模型分割,整个系统模型作为一个整体进行MATLAB/Simulink仿真	1	50	10	17 594
使用ITM模型分割,将整个系统分为一个主系统和22个子系统, 基于MATLAB/Simulink进行单核串行仿真	1	50	10	5 193
使用ITM模型分割,将整个系统分为一个主系统和22个子系统, 基于UREP300进行多核并行仿真	23	50	10	30