A Multivariable Optimal Control System for a Generator

A new digital generator control system has been developed, which coordinates excitation and governing systems of a generator by using multivariable optimal control scheme on the basis of modern control theory. Control performance of the developed system was investigated with computer simulations and tested at a 200KVA pilot power plant with 3KV transmission lines. This paper first outlines the control system, next describes the control schemes including process models, optimal control algorithms, control sequence, and state estimation schemes, and finally shows its control performance obtained from the pilot plant tests and the computer simulations.

[1]  Yao-nan Yu,et al.  Estimation of External Dynamic Equivalents of a Thirteen-Machine System , 1981, IEEE Transactions on Power Apparatus and Systems.

[2]  P. Bonanomi,et al.  On-Line Identification of an Equivalent Reactance for Stability Applications , 1981, IEEE Transactions on Power Apparatus and Systems.

[3]  S. Yokokawa,et al.  Idenntification of Parameters for Power System Stability Analysis Using Kalman Filter , 1981, IEEE Transactions on Power Apparatus and Systems.

[4]  B. Porter,et al.  Optimal control of multivariable linear systems incorporating integral feedback , 1971 .

[5]  Ronald G. Harley,et al.  Agile computer control of a turboalternator , 1979 .

[6]  M. J. Gibbard,et al.  Practical implementation on a 5 kVA synchronous generator of an adaptive excitation controller strategy for a wide range of operating conditions , 1978 .

[7]  Yao-nan Yu,et al.  Application of an Optimal Control Theory to a Power System , 1970 .

[8]  Yao-nan Yu,et al.  Multi-Mode Stabilization of Torsional Oscillations Using Output Feedback Excitation Control , 1982, IEEE Transactions on Power Apparatus and Systems.

[9]  Charles Concordia,et al.  Concepts of Synchronous Machine Stability as Affected by Excitation Control , 1969 .

[10]  S. Yokokawa,et al.  Development and Testing of an Automatic Stability Prediction and Control (ASPAC) for a Synchronous Generator by Air Gap Flux , 1982, IEEE Transactions on Power Apparatus and Systems.

[11]  P.J. Nolan,et al.  Coordinated Application of Stabilizers in Multimachine Power Systems , 1980, IEEE Transactions on Power Apparatus and Systems.

[12]  V. Arcidiacono,et al.  Studies on damping of electromechanical oscillations in multimachine systems with longitudinal structure , 1976, IEEE Transactions on Power Apparatus and Systems.