Journal of Northeastern University Natural Science ›› 2020, Vol. 41 ›› Issue (5): 736-740.DOI: 10.12068/j.issn.1005-3026.2020.05.021

• Information & Control • Previous Articles     Next Articles

Design of Disturbance Suppression Controller for Multi-machine Power Systems Based on Minimax Theory

CHANG Ling1,2, JING Yuan-wei1   

  1. 1.School of Information & Control Engineering, Northeastern University, Shenyang 110819, China; 2.Department of Information and Control Engineering, Shenyang Urban Construction University, Shenyang 110167, China.
  • Received:2019-06-03 Revised:2019-06-03 Online:2020-05-15 Published:2020-05-15
  • Contact: CHANG Ling
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Abstract: A disturbance suppression algorithm based on Minimax theory is proposed for solving the disturbance suppression of multi-machine power systems with coupling performance. A pseudo-generalized Hamilton form is established based on modifying generalized Hamilton system for multi-machine excitation system. By introducing the Minimax theory into the Hamiltonian power system with disturbances, the disturbance suppression controller is determined based on the worst disturbance situation. The degree of disturbance presumption can be avoided and the conservatism of the traditional method can be reduced. Simulation results show that the method and the control strategy can make the system state converge to the initial equilibrium point rapidly during large disturbances, which effectively improves the transient stability performance of power systems.

Key words: Minimax, Hamilton system, disturbance suppression, multi-machine, excitation system

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