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Low Frequency Damping Control for Power Electronics-Based AC Grid Using Inverters with Built-In PSS

Author

Listed:
  • Ming Yang

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

  • Wu Cao

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

  • Tingjun Lin

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

  • Jianfeng Zhao

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

  • Wei Li

    (NARI Group Corporation (State Grid Electric Power Research Institute), Nanjing 211106, China)

Abstract

Low frequency oscillations are the most easily occurring dynamic stability problem in the power system. With the increasing capacity of power electronic equipment, the coupling coordination of a synchronous generator and inverter in a low frequency range is worth to be studied further. This paper analyzes the mechanism of the interaction between a normal active/reactive power control grid-connected inverters and power regulation of a synchronous generator. Based on the mechanism, the power system stabilizer built in the inverter is used to increase damping in low frequency range. The small-signal model for electromagnetic torque interaction between the grid-connected inverters and the generator is analyzed first. The small-signal model is the basis for the inverters to provide damping with specific amplitude and phase. The additional damping torque control of the inverters is realized through a built-in power system stabilizer. The fundamentals and the structure of a built-in power system stabilizer are illustrated. The built-in power system stabilizer can be realized through the active or reactive power control loop. The parameter design method is also proposed. With the proposed model and suppression method, the inverters can provide a certain damping torque to improve system stability. Finally, detailed system damping simulation results of the universal step test verify that the analysis is valid and effective.

Suggested Citation

  • Ming Yang & Wu Cao & Tingjun Lin & Jianfeng Zhao & Wei Li, 2021. "Low Frequency Damping Control for Power Electronics-Based AC Grid Using Inverters with Built-In PSS," Energies, MDPI, vol. 14(9), pages 1-18, April.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:9:p:2435-:d:542772
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    References listed on IDEAS

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    1. Jian Zuo & Yinhong Li & Dongyuan Shi & Xianzhong Duan, 2017. "Simultaneous Robust Coordinated Damping Control of Power System Stabilizers (PSSs), Static Var Compensator (SVC) and Doubly-Fed Induction Generator Power Oscillation Dampers (DFIG PODs) in Multimachin," Energies, MDPI, vol. 10(4), pages 1-23, April.
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    Cited by:

    1. Abdul Waheed Khawaja & Nor Azwan Mohamed Kamari & Muhammad Ammirrul Atiqi Mohd Zainuri, 2021. "Design of a Damping Controller Using the SCA Optimization Technique for the Improvement of Small Signal Stability of a Single Machine Connected to an Infinite Bus System," Energies, MDPI, vol. 14(11), pages 1-20, May.

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