Predictive generalised active disturbance rejection for load frequency control with communication delay

This paper formulates a generalised active disturbance rejection control technique based on Smith predictor (SP-GADRC) for power systems with communication delay. The SP-GADRC technique employs essential plant information and uses the notion of Smith predictor to alleviate the deterioration of trans...

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Bibliographic Details
Published in:Transactions of the Institute of Measurement and Control 2023-07, Vol.45 (11), p.2027-2042
Main Authors: Jain, Shivam, Hote, Yogesh V
Format: Article
Language:English
Subjects:
Active control
Frequency control
Nonlinearity
Rejection
Time lag
Transient performance
Transient response
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Summary:This paper formulates a generalised active disturbance rejection control technique based on Smith predictor (SP-GADRC) for power systems with communication delay. The SP-GADRC technique employs essential plant information and uses the notion of Smith predictor to alleviate the deterioration of transient response that arises due to the presence of communication delay in a system. The generalised formulae for computation of controller and observer gains for various single and multi-area power systems are derived. Furthermore, the effect of parametric uncertainty, nonlinearities, model-plant mismatch, load disturbances as well as varying time delay is examined to validate the robustness of the SP-GADRC technique. An elaborate comparative analysis is conducted with various existing approaches to exhibit efficacy of the SP-GADRC technique. The simulation results reveal that SP-GADRC scheme demonstrates an improved disturbance rejection ability, better transient performance and is robust to the presence of nonlinearities and disturbances in system.
ISSN:0142-3312
1477-0369
DOI:10.1177/01423312221149465