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Decentralized adaptive PI control strategies for frequency control of interconnected systems. (English) Zbl 0772.93049

The primary function of an electric power system is to produce the real and reactive powers demanded by the various loads connected to the system. A linear quadratic decentralized PI control scheme with prescribed closed-loop eigenvalues, for load frequency control problem while the power system is subject to known constant plus unknown time- varying load disturbance, is aimed in this paper. Section 2 deals with the problem statement. In section 3, decentralized PI controller based on decentralized state estimation with prescribed eigenvalues is developed. PI controller algorithm alone will not work satisfactorily to reject time-varying load disturbance or system parameter variation. Then, section 4 deals with an effective decentralized adaptive control, where local adaptive control based on minimum prediction error principle is superposed on local PI decentralized control. In section 5, some simulation results of the proposed control algorithms are presented.
Reviewer: K.Ichikawa (Tokyo)

MSC:

93C40 Adaptive control/observation systems
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References:

[1] C E. Fosha, O. I. Elgerd: The megawatt frequency control problem: A new approach via optimal control theory. IEEE Trans. Power Appar. Systems PAS-89 (1970), 563-571.
[2] R. K. Cavin III M. C Budge, Jr., P. Rasmussen: An optimal linear systems approach to load-frequency control. IEEE Trans. Power Appar. Systems PAS-91 (1972), 2271 - 2285.
[3] S. M. Miniesy, E. V. Bohn: Optimal load-frequency continuous control with unknown deterministic power demand. IEEE Trans. Power Appar. Systems PAS-91 (1972), 1910 to 1915.
[4] A. J. Koiva, R. M. Burns: Optimum load frequency control of interconnected power system with uncertainty. IEEE PES Summer Meeting and e.h.v./v.h.v. Conf. Canada, Paper-C73 (1973), 461-1.
[5] J. D. Glover, F. C Schweppe: Advanced load frequency control. IEEE Trans. Power Appar. Systems PAS-91 (1972), 2095-2103.
[6] C W. Sanders E. C Tacker, T. D. Linton: A new class of decentralized filters of interconnected systems. IEEE Trans. Automat. Control AC-19 (1974), 259-262. · Zbl 0275.93048
[7] M. Calovic: Automatic generation control: Decentralized area-wise optimal solution. Electric Power Systems Research 7 (1984), 115-139.
[8] K. Venkateswarlu, A. K. Mahalanabis: Design of decentralized load frequency regulators. Proc. IEE-C 124 (1977), 817-820.
[9] Y. Park, K. Lee: Optimal decentralized load frequency control. Electric Power System Research 7 (1984), 279-288.
[10] E. J. Davison, N. K. Tripathi: The optimal decentralized control of a large power system: Load and frequency control. IEEE Trans. Automat. Control AC-23 (1978), 312-325. · Zbl 0383.93008
[11] L. Bakule: Two-level control generation of multiarea electric energy systems. Simulation of Control Systems (I. Troch, North-Holland, Amsterdam 1978, pp. 161 - 163.
[12] J. Kanniah S. C Tripathy O. P. Malik, G. S. Hope: Microprocessor-based adaptive load-frequency control. Proc. IEEE-C 131 (1984), 4, 121-128.
[13] M. A. Sheirah, M. M. Abd-El-Fattah: Improved load-frequency self-turning regulator. Internat. J. Control 39 (1984), 1, 143-158. · Zbl 0543.93045
[14] I. Vajk M. Vajta L. Keviczky R. Haber J. Hetthessy, K. Kovacs: Adaptive loadfrequency control of the Hungarian power system. Automatica 21 (1983), 2, 129-137. · Zbl 0555.93040
[15] L. Bakule, J. Lunze: Decentralized design of feedback control for large-scale systems. Supplement to Kybernetika vol. 24 (1988), 100 pages. · Zbl 0669.93005
[16] B. D. O. Anderson, J. B. Moore: Linear Optimal Control. Prentice-Hall, Englewood Cliffs, N.J. 1971. · Zbl 0321.49001
[17] T. A. Solheim: Design of optimal control systems with prescribed eigenvalues. Internat. J. Control 75(1972), 1, 143-160. · Zbl 0225.49026
[18] M. Jamshidi: Large Scale Systems: Modelling and Control. North-Holland, Amsterdam 1983. · Zbl 0646.93003
[19] G. C Goodwin, K. S. Sin: Adaptive Filtering, Prediction and Control. Prentice-Hall, Englewood Cliffs, N. J. 1984. · Zbl 0653.93001
[20] K. J. Astrom, B. Wittenmark: Computer Controlled Systems: Theory and Design. Prentice-Hall, Englewood, Cliffs, N. J. 1984.
[21] O. I. Elgerd: Electric Energy System Theory- An Introduction. Tata McGraw-Hill, New Delhi 1983.
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