Journal of Electrical Engineering and Technology

  • 제5권2호
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  • Pages.197-208
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  • 2010
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  • 1975-0102(pISSN)
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  • 2093-7423(eISSN)
대한전기학회 (The Korean Institute of Electrical Engineers)
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An Adaptive UPFC Based S tabilizer forDamping of Low Frequency Oscillation

  • Banaei, M.R. (Electrical Engineering Department, Faculty of engineering, Azarbaijan University of Tarbiat Moallem) ;
  • Hashemi, A. (Department of Electrical and Electronic Engineering, Kermanshah Branch, Islamic Azad University)
  • 투고 : 2009.08.30
  • 심사 : 2010.04.10
  • 발행 : 2010.06.01
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초록

Unified power flow controller (UPFC) is the most reliable device in the FACTS concept. It has the ability to adjust all three control parameters effective in power flow and voltage stability. In this paper, a linearized model of a power system installed with a UPFC has been presented. UPFC has four control loops that by adding an extra signal to one of them, increases dynamic stability and load angle oscillations are damped. In this paper, after open loop eigenvalue (electro mechanical mode) calculations, state-space equations have been used to design damping controller and it has been considered to influence active and reactive power flow durations as the input of damping controller, in addition to the common speed duration of synchronous generators as input damper signal. To increase stability, further Lead-Lag and LQR controllers, a novel on-line adaptive controller has been used analytically to identify power system parameters. Closed-loop calculations of the electro mechanical mode verify the improvement of system pole placement after controller designing. Suitable operation of adaptive controller to decrease rotor speed oscillations against input mechanical torque disturbances is confirmed by the simulation results.

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참고문헌

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  1. Interline power flow controller (IPFC) based damping recurrent neural network controllers for enhancing stability vol.52, pp.7, 2011, https://doi.org/10.1016/j.enconman.2011.01.024
  2. Application of reinforcement learning for generating optimal control signal to the IPFC for damping of low-frequency oscillations 2018, https://doi.org/10.1002/etep.2488
  3. Adaptive controller design based on input-output signal selection for voltage source converter high voltage direct current systems to improve power system stability vol.23, pp.9, 2016, https://doi.org/10.1007/s11771-016-3283-x