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Eigen-Analysis Considering Time-Delay and Data-Loss of WAMS and ITS Application to WADC Design Based on Damping Torque Analysis

Author

Listed:
  • Tao Zhou

    (School of Electrical Engineering, Southeast University, Nanjing 210096, China)

  • Zhong Chen

    (School of Electrical Engineering, Southeast University, Nanjing 210096, China)

  • Siqi Bu

    (Department of Electrical Engineering, The Hong Kong Polytechnic University, Hong Kong, China)

  • Haoran Tang

    (School of Electrical Engineering, Southeast University, Nanjing 210096, China)

  • Yi Liu

    (School of Electrical Engineering, Southeast University, Nanjing 210096, China)

Abstract

Data-loss from wide-area measurement systems (WAMS) is a stochastic event and eigenvalues of power systems containing data-loss cannot be calculated directly. This paper proposes a unified model of WAMS data containing time-delay and data-loss according to its mathematical expectation. Based on Pade approximation, the model is incorporated into a system linearized model with WAMS. Thus, an eigen-analysis can be conducted to analyze the impacts of data corruption and to calculate the system stability time-delay margin. Then, the unified model is applied to damping torque analysis (DTA) to derive the damping torque index (DTI) with WAMS. The DTI can be used to select feedback signals and conduct the parameter design of a wide-area damping controller (WADC). Finally, the 2-area 4-machine (2A4M) Kundur system and Eastern China power grid (ECPG) are simulated to validate the feasibility of the model and its application. The results demonstrate the impacts of data corruption on system dynamic performance and the ability of the method to improve the small-signal stability of interconnected power grids.

Suggested Citation

  • Tao Zhou & Zhong Chen & Siqi Bu & Haoran Tang & Yi Liu, 2018. "Eigen-Analysis Considering Time-Delay and Data-Loss of WAMS and ITS Application to WADC Design Based on Damping Torque Analysis," Energies, MDPI, vol. 11(11), pages 1-15, November.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:11:p:3186-:d:183424
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    References listed on IDEAS

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    1. Dan Huang & Qiyu Chen & Shiying Ma & Yichi Zhang & Shuyong Chen, 2018. "Wide-Area Measurement—Based Model-Free Approach for Online Power System Transient Stability Assessment," Energies, MDPI, vol. 11(4), pages 1-20, April.
    2. Kai Liao & Yao Wang, 2017. "A Comparison between Voltage and Reactive Power Feedback Schemes of DFIGs for Inter-Area Oscillation Damping Control," Energies, MDPI, vol. 10(8), pages 1-17, August.
    3. Yanbo Che & Jianmei Xu & Kun Shi & Huanan Liu & Weihua Chen & Dongmin Yu, 2017. "Stability Analysis of Aircraft Power Systems Based on a Unified Large Signal Model," Energies, MDPI, vol. 10(11), pages 1-15, October.
    4. Guowei Cai & Deyou Yang & Cheng Liu, 2013. "Adaptive Wide-Area Damping Control Scheme for Smart Grids with Consideration of Signal Time Delay," Energies, MDPI, vol. 6(9), pages 1-18, September.
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