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

Abstract

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

CLC Number:

TP27

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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Table 1.

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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

Research on Electromagnetic Transient Acceleration Simulation Technoloy of New-Type Power System

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