Robust power transmission control and FACTS

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Guaranteeing the small signal stability of interconnected power system has always been challenging because of a host of reasons such as variation in operating conditions, uncertainty in parameters of the system and network configuration. Because of complexity of the system, nonlinear system theory has not been able to make much impact on power system real time control. Linear and multivariable system theory has been more effective, but robustness of the control performance has always been an issue because of variable nature of the system. Dr Pal tackled the problem in H∞ framework. He modelled the damping requirement of the system as additional constraints and solved through Linear Matrix Inequality Optimisation. The research targeted damping inter-area modes of interconnected system with energy storage device, later extended to various flexible ac system controllers (FACTS). The utilization of wide area-based signal was considered for centralized control architecture. The issue of time delay in delivering the control signal from the measurement location to the control location was dealt by predictor-based approach. The control algorithms were all validated in real time with dynamic simulator. The research was sponsored by research council and industry and the know how has been transferred to industry.

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Selected publications

  1. N. Hatziargyriou et al., ``Definition and Classification of Power System Stability Revisited & Extended,'' IEEE Transactions on Power Systems, Early Access.
  2. A. K. Singh and B. C. Pal, ``Rate of Change of Frequency Estimation for Power Systems Using Interpolated DFT and Kalman Filter,'' IEEE Transactions on Power Systems, vol. 34, no. 4, pp. 2509-2517, July 2019.
  3. G. Anagnostou and B. C. Pal, ``Impact of Overexcitation Limiters on the Power System Stability Margin Under Stressed Conditions,'' IEEE Transactions on Power Systems, vol. 31, no. 3, pp. 2327-2337, May 2016.
  4. R. A. Jabr, B. C. Pal and N. Martins, `` A Sequential Conic Programming Approach for the Coordinated and Robust Design of Power System Stabilizers,'' IEEE Transactions on Power Systems, vol. 25, no. 3, pp. 1627-1637, Aug. 2010.
  5. R. Majumder, B. C. Pal, C. Dufour and P. Korba, `` Design and real-time implementation of robust FACTS controller for damping inter-area oscillation,'' IEEE Transactions on Power Systems, vol. 21, no. 2, pp. 809-816, May 2006.
  6. B. Chaudhuri, R. Majumder and B. C. Pal, `` Wide-area measurement-based stabilizing control of power system considering signal transmission delay,'' IEEE Transactions on Power Systems, vol. 19, no. 4, pp. 1971-1979, Nov. 2004.
  7. B. Chaudhuri and B. C. Pal, `` Robust damping of multiple swing modes employing global stabilizing signals with a TCSC,'' IEEE Transactions on Power Systems, vol. 19, no. 1, pp. 499-506, Feb. 2004.
  8. B. C. Pal, `` Robust damping of interarea oscillations with unified power-flow controller,'' IEE Proceedings - Generation, Transmission and Distribution, vol. 149, no. 6, pp. 733-738, Nov. 2002.
  9. B. C. Pal, A. H. Coonick, I. M. Jaimoukha and H. El-Zobaidi, `` A linear matrix inequality approach to robust damping control design in power systems with superconducting magnetic energy storage device," IEEE Transactions on Power Systems, vol. 15, no. 1, pp. 356-362, Feb. 2000.
  10. B. C. Pal, A. H. Coonick and D. C. Macdonald, `` Robust damping controller design in power systems with superconducting magnetic energy storage devices,'' IEEE Transactions on Power Systems, vol. 15, no. 1, pp. 320-325, Feb. 2000.
  11. B. C. Pal, A. H. Coonick and D. C. Macdonald, `` Robust damping controller design in power systems with superconducting magnetic energy storage devices,'' IEEE Transactions on Power Systems, vol. 15, no. 1, pp. 320-325, Feb. 2000.
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