Hierarchical optimal robust load-frequency control for power systems

Author(s): M. Rahmani and N. Sadati
DOI: 10.1049/iet-gtd.2011.0544

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Author(s): M. Rahmani ¹ and N. Sadati ^{1, 2}
- Affiliations: 1: Intelligent Systems Laboratory, Electrical Engineering Department, Sharif University of Technology, Tehran, Iran
  2: Department of Electrical and Computer Engineering, University of British Columbia, Vancouver, Canada
Source: Volume 6, Issue 4, April 2012, p. 303 – 312
DOI: 10.1049/iet-gtd.2011.0544 , Print ISSN 1751-8687, Online ISSN 1751-8695

In this study, a hierarchical optimal robust controller is presented for the power system load-frequency control problem. In this approach, the multi-area power system is first decomposed into several sub-systems (areas). Then by using a two-level control strategy, the overall optimal solution is obtained. At the first level, the optimal control of each area is obtained with respect to local information and also considering interactions coming from other areas. At the second level, by using a coordination strategy, the local controllers will converge to global solution and optimal robust controller is achieved. This approach is applicable to both single-area and multi-area interconnected power systems. Simulation results show the effectiveness and optimality of the proposed robust controller in power systems.

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Hierarchical optimal robust load-frequency control for power systems

Hierarchical optimal robust load-frequency control for power systems

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