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New robust adaptive load-frequency control with system parametric uncertainties

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3 Author(s)
Wang, Y. ; Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore ; Zhou, R. ; Wen, C.

In the paper, based on a combination of the robust control approach and an adaptive control technique, a design procedure of a new robust adaptive controller is proposed for power system load-frequency control with system parametric uncertainties. The system parametric uncertainties are obtained by changing parameters by 30% to 50% simultaneously from their typical values. In the design of the proposed controller, only the bounds of system parameters are required. The motivation of combining the robust control with an adaptive control is to use the robust control approach to deal with the small parametric uncertainties and to use the adaptive control for large parametric uncertainties so that stability of the overall system and good performance can both be achieved for all admissible uncertainties. The simulation results demonstrate that for the example system the proposed load-frequency controller can achieve good performance even in the presence of the generation rate constraint (GRC).<>

Published in:

Generation, Transmission and Distribution, IEE Proceedings  (Volume:141 ,  Issue: 3 )