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Transient Stability Control Based on Kinetic Energy Changes Measured by Synchronized Angular Velocity

Author

Listed:
  • A. F. Diaz-Alzate

    (Research Group in Applied Technologies, Universidad Nacional de Colombia, Sede Medellín, Carrera 80 No. 65-223, Robledo, Medellín 050041, Colombia)

  • John E. Candelo-Becerra

    (Departamento de Energía Eléctrica y Automática, Facultad de Minas, Universidad Nacional de Colombia, Sede Medellín, Carrera 80 No. 65-223, Robledo, Medellín 050041, Colombia)

  • Albert Deluque-Pinto

    (Grupo DESTACAR, Facultad de Ingeniería, Universidad de La Guajira, Riohacha 440001, Colombia
    Departamento de Procesos y Energías, Facultad de Minas, Universidad Nacional de Colombia, Sede Medellín, TAYEA—Carrera 80 No. 65-223, Medellín 050034, Colombia)

Abstract

Real-time transient stability studies are based on voltage angle measures obtained with phasor measurement units (PMUs). A more precise calculation to address transient stability is obtained when using the rotor angles. However, these values are commonly estimated, which leads to possible errors. In this work, the kinetic energy changes in electric machines are used as a criterion for evaluating and correcting transient stability, and to determine the precise time of insertion of a special protection system (SPS). Data from the PMU of the wide-area measurement system (WAMS) are used to construct the SPS. Furthermore, it is assumed that a microcontroller can be located in each generation unit to obtain the synchronized angular velocity. Based on these measurements, the kinetic energy of the system and the respective control action are performed at the appropriate time. The results show that the proposed SPS effectively corrects the oscillations fast enough during the transient stability event. In addition, the proposed method has the advantage that it does not depend on commonly proposed methods, such as system models, the identification of coherent machine groups, or the structure of the network. Moreover, the synchronized angular velocity signal is used, which is not commonly measured in power systems. Validation of the method is carried out in the New England power system, and the findings show that the method is helpful for real-time operation on large power systems.

Suggested Citation

  • A. F. Diaz-Alzate & John E. Candelo-Becerra & Albert Deluque-Pinto, 2021. "Transient Stability Control Based on Kinetic Energy Changes Measured by Synchronized Angular Velocity," Energies, MDPI, vol. 14(21), pages 1-19, October.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:21:p:6893-:d:661166
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    References listed on IDEAS

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    1. Huaiyuan Wang & Baohui Zhang & Zhiguo Hao, 2015. "Response Based Emergency Control System for Power System Transient Stability," Energies, MDPI, vol. 8(12), pages 1-13, November.
    2. A. F. Diaz-Alzate & John E. Candelo-Becerra & Juan F. Villa Sierra, 2019. "Transient Stability Prediction for Real-Time Operation by Monitoring the Relative Angle with Predefined Thresholds," Energies, MDPI, vol. 12(5), pages 1-17, March.
    3. Hyeongpil Bang & Dwi Riana Aryani & Hwachang Song, 2021. "Application of Battery Energy Storage Systems for Relief of Generation Curtailment in Terms of Transient Stability," Energies, MDPI, vol. 14(13), pages 1-14, June.
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