Design of generalised active disturbance rejection control for delayed systems: an application to load frequency control

Jain, Shivam; Hote, Yogesh V.

doi:10.1080/00207179.2020.1752940

Cited by 18 publications

(9 citation statements)

References 37 publications

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“…where, K ~ s = ( δ g δ t M d / β ) [ k ~ 1 c k ~ 2 c k ~ 3 c ] . Therefore, value of F re for perfect tracking is computed as (Jain and Hote, 2021a)…”

Section: Sp-gadrc Approach For Power Systems With Communication Delaymentioning

confidence: 99%

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

Jain

Hote

2023

Transactions of the Institute of Measurement and Control

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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.

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“…where, K ~ s = ( δ g δ t M d / β ) [ k ~ 1 c k ~ 2 c k ~ 3 c ] . Therefore, value of F re for perfect tracking is computed as (Jain and Hote, 2021a)…”

Section: Sp-gadrc Approach For Power Systems With Communication Delaymentioning

confidence: 99%

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

Jain

Hote

2023

Transactions of the Institute of Measurement and Control

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“…The heuristic algorithm is performed offline and with any kind of disturbance input. In other words, the way of selecting the disturbance in (1) does not affect the disturbance observer (29). The overall procedure of calculating disturbance observerbased controller gain matrices is shown in Fig.…”

Section: Improving Steady-state Performancementioning

confidence: 99%

“…However, the developed PI controller does not provide good performance, especially for the case high perturbed stand-alone power system. In [29] and [30], the external disturbance is estimated by an extended state observer (ESO) and a disturbance-observer, respectively. Then, a state feedback controller is designed.…”

Section: Introductionmentioning

confidence: 99%

Decentralized Robust Disturbance-Observer Based LFC of Interconnected Systems

Vafamand

Arefi

Asemani

et al. 2022

IEEE Trans. Ind. Electron.

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“…Let

({,, \begin{matrix} {sZ}_{s} ((), s) goodbreak= A_{s} Z_{s} ((), s) goodbreak+ B_{s} U_{s} ((), s) goodbreak+ L_{s} ((), y_{s} ((), s) goodbreak- {\overset{true~}{y}}_{s} ((), s)) \\ {\overset{true~}{y}}_{s} ((), s) goodbreak= C_{s} Z_{s} ((), s) \end{matrix})

where

Z_{s} ((), s) = ([], Z_{s 1} ((), s) Z_{s 2} ((), s) \dots Z_{s ((), j - k)} ((), s)), Z_{s ((), j - k + 1)} ((), s), and {\overset{true~}{y}}_{s} ((), s)

are the observed states, estimation of

Φ_{s} ((), s)

and estimation of the system output, respectively. The observer gains are calculated by Equation 15

({,, \begin{matrix} L_{s} goodbreak= ((), \binom{j - k + 1}{i}) ω_{o}^{i} goodbreak= \frac{((), j goodbreak- k goodbreak+ 1)!}{((), j goodbreak- k goodbreak+ 1 goodbreak- i)! \times i!} ω_{o}^{i} \\ i goodbreak= 1 \dots j goodbreak- k goodbreak+ 1 \end{matrix})

where

ω_{o}

is the observer gain.…”

Section: Modification Of Adrc and Estimation Of ∆Pdrmentioning

confidence: 99%

“…12,13 Active Disturbance Rejection Control (ADRC) has been used to reject and compensate both internal dynamics and external disturbances, resulting in a robust controller. 14,15 ADRC does not need comprehensive information about the model of the physical systems; it uses Extended State Observer (ESO) to estimate the internal dynamics and external disturbances and then commands the system to reject and compensate these disturbances. Optimization of the ADRC is simple because it has only two parameters for tuning, the observer bandwidth (ωo) and feedback controller bandwidth (ωc).…”

Section: Introductionmentioning

confidence: 99%

Accurate demand response participation in regulating power system frequency by Modified Active Disturbance Rejection Control

Rouhani

Mojallali

Baghramian

2022

Math Methods in App Sciences

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One of the significant problems in demand response (DR) participation in the smart power system is calculating how much electrical power is required to extract from DR ( ∆PDR) to keep the power system frequency in the allowable range. Calculating the precise amount of this value is impossible due to the random nature of load disturbance (LoD). In this paper, a new method is presented to control the DR participation in the load frequency control considering communication time delay. Extended State Observer is used to estimate the magnitude of the LoD, considering the structural uncertainty of the power system parameters. Then, the DR program is implemented in load frequency control to compensate the whole or part of LoD considering the available electrical power at the aggregators (PAV‐AGG) and communication time delay. Afterward, Active Disturbance Rejection Control is modified and adopted to control the uncompensated LoD. The salp swarm algorithm is employed to design the parameters of the proposed method, which is verified in comparison with the previous methods. The results demonstrate that the presented approach has potentially significant performance, assisting the power system frequency to be damped immediately with the small overshoot and undershoot.

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Design of generalised active disturbance rejection control for delayed systems: an application to load frequency control

Cited by 18 publications

References 37 publications

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

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

Decentralized Robust Disturbance-Observer Based LFC of Interconnected Systems

Accurate demand response participation in regulating power system frequency by Modified Active Disturbance Rejection Control

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