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A Reduced-Order Algorithm for a Digital Twin Model of Ultra-High-Voltage Valve-Side Bushing Considering Spatio-Temporal Non-Uniformity

Author

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  • Yongsheng He

    (State Grid Chongqing Electric Power Co., Chongqing 400015, China
    Department of Electrical Engineering, Tsinghua University, Beijing 100084, China)

  • Yongfu Li

    (State Grid Chongqing Electric Power Research Institute, Chongqing 401123, China)

  • Xiangcheng Li

    (State Key Laboratory of Power Transmission Equipment Technology, School of Electrical Engineering, Chongqing University, Chongqing 400044, China)

  • Yanan Yuan

    (State Key Laboratory of Power Transmission Equipment Technology, School of Electrical Engineering, Chongqing University, Chongqing 400044, China)

  • Fan Yang

    (State Key Laboratory of Power Transmission Equipment Technology, School of Electrical Engineering, Chongqing University, Chongqing 400044, China)

  • Zongxiang Lu

    (Department of Electrical Engineering, Tsinghua University, Beijing 100084, China)

Abstract

The valve-side bushing of a converter transformer is a critical component in ultra-high-voltage direct current (UHVDC) systems, making its monitoring through digital twin technology highly significant. However, the complex structure and spatio-temporal nonlinearity of the bushing result in a large computational demand for its digital twin model, which requires an effective order reduction algorithm. This paper proposes a Spatio-temporal Non-uniformity Proper Orthogonal Decomposition (SN-POD) algorithm considering the inhomogeneity of space and time consumption to meet the reduced-order computational requirements of UHV valve-side bushings. This proposed method reduces the calculation time to 10% of the full-order simulation model while controlling the error range of the key research area less than 0.1%. The test results show that this method has good robustness, calculation speed, and accuracy. This research can significantly enhance the computational efficiency of digital twin modeling for valve-side bushings and provide a technical foundation for constructing digital twin models for UHV valve-side bushings.

Suggested Citation

  • Yongsheng He & Yongfu Li & Xiangcheng Li & Yanan Yuan & Fan Yang & Zongxiang Lu, 2025. "A Reduced-Order Algorithm for a Digital Twin Model of Ultra-High-Voltage Valve-Side Bushing Considering Spatio-Temporal Non-Uniformity," Energies, MDPI, vol. 18(6), pages 1-22, March.
    • Handle: RePEc:gam:jeners:v:18:y:2025:i:6:p:1481-:d:1614350
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    References listed on IDEAS

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    1. Shields, Michael D. & Zhang, Jiaxin, 2016. "The generalization of Latin hypercube sampling," Reliability Engineering and System Safety, Elsevier, vol. 148(C), pages 96-108.
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