Document Detail


A robust decentralized load frequency controller for interconnected power systems.
MedLine Citation:
PMID:  22424605     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
A novel design of a robust decentralized load frequency control (LFC) algorithm is proposed for an inter-connected three-area power system, for the purpose of regulating area control error (ACE) in the presence of system uncertainties and external disturbances. The design is based on the concept of active disturbance rejection control (ADRC). Estimating and mitigating the total effect of various uncertainties in real time, ADRC is particularly effective against a wide range of parameter variations, model uncertainties, and large disturbances. Furthermore, with only two tuning parameters, the controller provides a simple and easy-to-use solution to complex engineering problems in practice. Here, an ADRC-based LFC solution is developed for systems with turbines of various types, such as non-reheat, reheat, and hydraulic. The simulation results verified the effectiveness of the ADRC, in comparison with an existing PI-type controller tuned via genetic algorithm linear matrix inequalities (GALMIs). The comparison results show the superiority of the proposed solution. Moreover, the stability and robustness of the closed-loop system is studied using frequency-domain analysis.
Authors:
Lili Dong; Yao Zhang; Zhiqiang Gao
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-3-15
Journal Detail:
Title:  ISA transactions     Volume:  -     ISSN:  1879-2022     ISO Abbreviation:  -     Publication Date:  2012 Mar 
Date Detail:
Created Date:  2012-3-19     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0374750     Medline TA:  ISA Trans     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 ISA. Published by Elsevier Ltd. All rights reserved.
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