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- Title
Sliding-Mode Design with Disturbance Observer Optimized by Improved HBA Algorithm for Frequency Regulation of Multi-Area Power System.
- Authors
Gonggui Chen; Zhijin Jiang; Hao Tan; Chaohua Zhang; Jinzhu Wei; Wenchen Chen; Hongyu Long
- Abstract
The intermittency of renewable energy generation and the randomness of power load variations lead to voltage and frequency fluctuations among the interconnected power system. In this study, a control strategy based on sliding mode control theory and disturbance observer is proposed for the multi-area power system with parameter uncertainties to handle load frequency control. By choosing an appropriate integral-type sliding-mode surface and reaching law, a slidingmode load frequency controller is constructed. In order to reduce the influence of uncertainties, a disturbance observer is designed to estimate lumped disturbances. On this basis, the sliding mode controller is reconstructed to provide better control effect. And the improved honey badger algorithm is used to tune out the optimal parameters of the designed controller. Simulation studies are carried out on a two-region reference system and an unequal capacity three-area power system with nonlinearity connected wind turbine generators to illustrate the favorable performance of the power system under the proposed control strategy. The comparison results show that the proposed control method possesses excellent frequency control ability under the uncertainty of load disturbance, wind power fluctuations and parameter uncertainties. And it also achieves efficient frequency control under a certain range of communication delay.
- Subjects
OBSERVABILITY (Control theory); SLIDING mode control; INTERCONNECTED power systems; TURBINE generators; WIND power; WIND turbines
- Publication
IAENG International Journal of Applied Mathematics, 2022, Vol 52, Issue 4, p994
- ISSN
1992-9978
- Publication type
Article