Shifted Frequency Analysis Hybrid Simulation Algorithm Based on Multi-rate Asynchronous Coordination

Authors

Yankan Song, Department of Electrical Engineering, Tsinghua University, Beijing 100084, China
Libin Wen, Electric Power Research Institute of Guangxi Power Grid Co Ltd. , Nanning 530023, China; Guangxi Key Laboratory of Intelligent Control and Maintenance of Power Equipment, Nanning 530023, China
Ying Chen, Department of Electrical Engineering, Tsinghua University, Beijing 100084, China
Jinji Xi, Electric Power Research Institute of Guangxi Power Grid Co Ltd. , Nanning 530023, China; Guangxi Key Laboratory of Intelligent Control and Maintenance of Power Equipment, Nanning 530023, China
Haoyuan Zhang, Department of Electrical Engineering, Tsinghua University, Beijing 100084, China
Li Xiong, Power Dispatching and Control Center of Guangxi Power Grid Co Ltd. , Nanning 530023, China

Abstract

Abstract: Large-scale AC/DC power systems exhibit complex dynamics across multiple time scales, and existing hybrid simulations suffer from interface delays and frequency losses during multi-rate coordination, compromising accuracy. To address this issue, a multi-rate asynchronous coordination method was proposed to construct hybrid simulations using shifted frequency analysis (SFA). Within the multi-area Thevenin equivalence (MATE) framework, the algorithm introduced an interpolation-based asynchronous coordination mechanism, effectively eliminating interface delays; by extending SFA theory and designing a universal interface model, it achieved lossless data exchange between partitions with different rates and model types. Case studies on an AC/DC test system demonstrate that the proposed method, even with large time step ratios between partitions, can still accurately simulate high-frequency dynamics, balancing simulation accuracy and efficiency.

Recommended Citation

Song, Yankan; Wen, Libin; Chen, Ying; Xi, Jinji; Zhang, Haoyuan; and Xiong, Li (2025) "Shifted Frequency Analysis Hybrid Simulation Algorithm Based on Multi-rate Asynchronous Coordination," Journal of System Simulation: Vol. 37: Iss. 10, Article 1.
DOI: 10.16182/j.issn1004731x.joss.25-0435
Available at: https://dc-china-simulation.researchcommons.org/journal/vol37/iss10/1

First Page

2439

Last Page

2453

CLC

TP391.9; TM743

Recommended Citation

Song Yankan, Wen Libin, Chen Ying, et al. Shifted Frequency Analysis Hybrid Simulation Algorithm Based on Multi-rate Asynchronous Coordination[J]. Journal of System Simulation, 2025, 37(10): 2439-2453.

Corresponding Author

Chen Ying

DOI

10.16182/j.issn1004731x.joss.25-0435