Decentralized Robust Controller Design for Strongly Interconnected Generators

Stability of multiple interconnected generation systems are prone to the inter-area power oscillations among them. This issue becomes more significant when the interconnection strength among the generation systems is stronger. In previous control strategies, the coupling effects have been considered...

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Main Authors: Milad Shojaee, S. Mohsen Azizi
Format: Article
Language:English
Published: IEEE 2023-01-01
Series:IEEE Access
Subjects:
Online Access:https://ieeexplore.ieee.org/document/10044689/
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author Milad Shojaee
S. Mohsen Azizi
author_facet Milad Shojaee
S. Mohsen Azizi
author_sort Milad Shojaee
collection DOAJ
description Stability of multiple interconnected generation systems are prone to the inter-area power oscillations among them. This issue becomes more significant when the interconnection strength among the generation systems is stronger. In previous control strategies, the coupling effects have been considered as undesired disturbances that leads to failure in tackling this issue when the generation systems become strongly coupled. Thus, in this paper a new control scheme is presented to address this strong coupling effect by designing robust decentralized controllers in a sequential way to tackle the load frequency control problem in a three-area generation system connected through tie-lines. Three robust decentralized controllers are designed for the three areas by using the <inline-formula> <tex-math notation="LaTeX">$\mu $ </tex-math></inline-formula>-synthesis technique. The model of tie-line coupling among the generation areas is taken into account in the design of sequential controllers. Moreover, the decentralized controllers are designed in such a way that the entire control system is robust against all the parameter variations and uncertainties. Based on the simulation results, the proposed decentralized controllers outperform the conventional independently designed controllers in terms of variations in the coupling strength in the tie-line.
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spelling doaj.art-66ac37e9db864753880dbd1b4742c9d92023-02-23T00:01:05ZengIEEEIEEE Access2169-35362023-01-0111160851609510.1109/ACCESS.2023.324556410044689Decentralized Robust Controller Design for Strongly Interconnected GeneratorsMilad Shojaee0https://orcid.org/0000-0002-5465-3213S. Mohsen Azizi1https://orcid.org/0000-0002-8178-2520Department of Electrical and Computer Engineering, New Jersey Institute of Technology, Newark, NJ, USADepartment of Electrical and Computer Engineering, New Jersey Institute of Technology, Newark, NJ, USAStability of multiple interconnected generation systems are prone to the inter-area power oscillations among them. This issue becomes more significant when the interconnection strength among the generation systems is stronger. In previous control strategies, the coupling effects have been considered as undesired disturbances that leads to failure in tackling this issue when the generation systems become strongly coupled. Thus, in this paper a new control scheme is presented to address this strong coupling effect by designing robust decentralized controllers in a sequential way to tackle the load frequency control problem in a three-area generation system connected through tie-lines. Three robust decentralized controllers are designed for the three areas by using the <inline-formula> <tex-math notation="LaTeX">$\mu $ </tex-math></inline-formula>-synthesis technique. The model of tie-line coupling among the generation areas is taken into account in the design of sequential controllers. Moreover, the decentralized controllers are designed in such a way that the entire control system is robust against all the parameter variations and uncertainties. Based on the simulation results, the proposed decentralized controllers outperform the conventional independently designed controllers in terms of variations in the coupling strength in the tie-line.https://ieeexplore.ieee.org/document/10044689/Interconnected systemsμ-synthesisrobust controllersequential designsynchronous generatortie-line
spellingShingle Milad Shojaee
S. Mohsen Azizi
Decentralized Robust Controller Design for Strongly Interconnected Generators
IEEE Access
Interconnected systems
μ-synthesis
robust controller
sequential design
synchronous generator
tie-line
title Decentralized Robust Controller Design for Strongly Interconnected Generators
title_full Decentralized Robust Controller Design for Strongly Interconnected Generators
title_fullStr Decentralized Robust Controller Design for Strongly Interconnected Generators
title_full_unstemmed Decentralized Robust Controller Design for Strongly Interconnected Generators
title_short Decentralized Robust Controller Design for Strongly Interconnected Generators
title_sort decentralized robust controller design for strongly interconnected generators
topic Interconnected systems
μ-synthesis
robust controller
sequential design
synchronous generator
tie-line
url https://ieeexplore.ieee.org/document/10044689/
work_keys_str_mv AT miladshojaee decentralizedrobustcontrollerdesignforstronglyinterconnectedgenerators
AT smohsenazizi decentralizedrobustcontrollerdesignforstronglyinterconnectedgenerators