Title :
Dual-axis supplementary controllers for multi-machine power systems
Author :
Abdel-magid, Y.L. ; Rahim, A.H.M.A. ; Al-Yadoumi, M.A.
Author_Institution :
Dept. of Electr. Eng., King Fahd Univ. of Pet. & Miner., Dhahran, Saudi Arabia
fDate :
Sept. 28 1991-Oct. 4 1991
Abstract :
The effect of an additional field winding on the quadrature axis of the rotor of a synchronous generator in suppressing undesirable sustained oscillations experienced in multimachine power system is investigated. A small-perturbation model for interconnected power systems with dually excited synchronous machines is developed. A two-level optimal control strategy incorporating controls both on the direct and quadrature axes field windings is developed. A 3-machine, 9-bus power system was selected for studying the dynamic behavior of multimachine systems when stabilizing signals both on the direct and quadrature axes of the various machines are used. From a number of case studies it has been observed that an appropriate additional control in the quadrature axis enhances the stability of the system substantially.<>
Keywords :
machine control; optimal control; oscillations; power system control; power system interconnection; rotors; stability; synchronous generators; direct axis; field winding; machine control; multimachine power system; optimal control; oscillations; quadrature axis; rotor; stability; synchronous generator; Control systems; Optimal control; Power system control; Power system dynamics; Power system interconnection; Power system modeling; Power system stability; Power systems; Rotors; Synchronous generators;
Conference_Titel :
Industry Applications Society Annual Meeting, 1991., Conference Record of the 1991 IEEE
Conference_Location :
Dearborn, MI, USA
Print_ISBN :
0-7803-0453-5
DOI :
10.1109/IAS.1991.178081
