World Academy of Science, Engineering and Technology
Published May 24, 2008 | Version 5383
Journal article Open

Simultaneous Tuning of Static Var Compensator and Power System Stabilizer Employing Real- Coded Genetic Algorithm

Creators

Description

Power system stability enhancement by simultaneous tuning of a Power System Stabilizer (PSS) and a Static Var Compensator (SVC)-based controller is thoroughly investigated in this paper. The coordination among the proposed damping stabilizers and the SVC internal voltage regulators has also been taken into consideration. The design problem is formulated as an optimization problem with a time-domain simulation-based objective function and Real-Coded Genetic Algorithm (RCGA) is employed to search for optimal controller parameters. The proposed stabilizers are tested on a weakly connected power system with different disturbances and loading conditions. The nonlinear simulation results are presented to show the effectiveness and robustness of the proposed control schemes over a wide range of loading conditions and disturbances. Further, the proposed design approach is found to be robust and improves stability effectively even under small disturbance and unbalanced fault conditions.

Files

5383.pdf

Files (234.3 kB)

Name Size Download all
md5:40c909673c0b10314719f741ee465ad4
234.3 kB Preview Download

Additional details

References

  • P. Kundur, Power System Stability and Control. New York: McGraw- Hill, 1994.
  • Sidhartha Panda and N.P.Padhy, "Robust power system stabilizer design using particle swarm optimization technique", International Journal of Electrical Systems Science and Engineering, Vol. 1, No. 1, pp. 1-8, 2008.
  • Sidhartha Panda and C.Ardil, "Robust Coordinated Design of Multiple Power System Stabilizers Using Particle Swarm Optimization Technique", International Journal of Electrical, System Science and Engineering, Vol. 1, No. 1, pp. 41-48, 2008.
  • Sidhartha Panda and C.Ardil, "Real-Coded Genetic Algorithm for Robust Power System Stabilizer Design", International Journal of Electrical, Computers and System Engineering, Vol. 2, No. 1, pp. 6-14, 2008.
  • N. G. Hingorani, L. Gyugyi, Understanding FACTS: Concepts and Technology of Flexible AC Transmission Systems, IEEE Press, New York, 2000.
  • Y. H Song, T. A. Johns, Flexible AC Transmission Systems (FACTS), IEE, London, 2000.
  • R. M Mathur, R. K. Verma, Thyristor-based FACTS Controllers for Electrical Transmission Systems, IEEE Press, Piscataway, 2002.
  • L. Gyugyi, "Reactive power generation and control by thyristor circuits" IEEE Trans. Industrial Applications, Vol. IA-15, No.-5, pp.521-532, Sept./Oct. 1979.
  • L. Gyugyi, "Power electronics in electric utilities: static var compensators," IEEE Proceedings, vol.76, No. 4, pp. 483-494, April 1988. [10] T. Hiyama, W. Hubbi and T. H. Ortmeyer, "Fuzzy logic control scheme with variable gain for static Var compensator to enhance power system stability" IEEE Trans. Power Systems, Vol. 14, No. 1, pp.186-191, Feb. 1999. [11] X. Y. Bian, C. Y. Chunga, K. W. Wang and C. T. Tse, "Choice of SVC location/signal and its controller design by probabilistic method", Electric Power Systems Research, Vol. 71, No 1, pp. 35-40, Sept. 2004. [12] Y. Chang and Z. Xu, "A novel SVC supplementary controller based on wide area signals", Electric Power System Research, Electric Power Syst. Res. Vol. 77, pp. 1569-1574, 2007. [13] Sidhartha Panda, N. P. Patidar and R.Singh, "Robust coordinated design of excitation and STATCOM-based controller for power system stability improvement", article in press in International Journal of Innovative Computing and Applications. [14] Sidhartha Panda and N.P.Padhy, "Power System with PSS and FACTS Controller: Modelling, Simulation and Simultaneous Tuning Employing Genetic Algorithm" International Journal of Electrical, Computer and Systems Engineering, Vol. 1, No. 1, pp. 9-18, 2007. [15] Sidhartha Panda and N.P.Padhy, "Coordinated design of TCSC controller and PSS employing particle swarm optimization technique" International Journal of Computer and Information Science and Engineering, Vol. 1, No. 1, pp. 1-9, 2007. [16] Sidhartha Panda and N.P.Padhy, "Comparison of Particle Swarm Optimization and Genetic Algorithm for FACTS-based Controller Design", Applied Soft Computing. Elsevier, Vol. 8, issue 4, pp. 1418- 1427, 2008. [17] Sidhartha Panda, N.P.Padhy, R.N.Patel, "Power System Stability Improvement by PSO Optimized SSSC-based Damping Controller", Electric Power Components & Systems, Vol. 36, No. 5, pp. 468-490, 2008. [18] M. Nambu and Y. Ohsawa, "Development of an advanced power system stabilizer using a strict linearization approach", IEEE Transactions on Power Systems, Vol. 11, pp. 813-818, 1996. [19] E. V. Larsen and D. A. Swann "Applying Power System Stabilizers Part II: Performance Objectives and Tuning Concepts-, IEEE Transactions on Power Apparatus and Systems, Vol. 100, pp. 3025-3033, 1981. [20] M. E. About-Ela, A. A. Sallam, J. D. McCalley and A. A. Fouad, "Damping controller design for power system oscillations using global signals-, IEEE Transactions on Power Systems, Vol. 11, pp. 767-773, 1996. [21] D. E. Goldberg, Genetic Algorithms in Search, Optimization and Machine Learning. Addison-Wesley, 1989. [22] SimPowerSystems 4.3 User-s Guide, Available: http://www.mathworks.com/products/simpower/