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Content Provider | IET Digital Library |
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Author | Kazemi, Mohammad Verij Gholamian, S. Asghar Sadati, Jalil |
Abstract | Inertial and droop control are common methods for improving grid frequency control. Using the first-order derivative of the frequency in the inertial control loop only investigates the rate of frequency variation, while other useful information is not taken into consideration. Accordingly, in this study, the application of a fractional-order derivative (between 1 and 2) in the inertial control loop is proposed to have more useful frequency-based information. To achieve this goal, firstly continued fraction approximations and secondly, the discretization is adopted by using the Tustin Method with Prewarping. Inertia loop and droop loop gain have a significant impact on the operation of the wind turbines and the power system frequency control. Therefore, in this paper, a novel method for the adaptive adjusting of droop and inertia control loops gains in DFIG is proposed. To utilize more frequency error information, fractional-order adaptive law is proposed to update the loop gains and the inertia control loop. In order to have a robust system, which is permanently stable for every fractional order (FO), is used parameter space method. Simulation results demonstrate the proper performance of the FO-based adaptive approach to increase the frequency nadir (FN) and decrease the frequency variations. |
Starting Page | 594 |
Ending Page | 605 |
Page Count | 12 |
ISSN | 17518687 |
Volume Number | 14 |
e-ISSN | 17518695 |
Issue Number | Issue 4, Feb (2020) |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-gtd/14/4 |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2019.0458 |
Journal | IET Generation, Transmission & Distribution |
Publisher Date | 2019-12-19 |
Access Restriction | Open |
Rights Holder | © The Institution of Engineering and Technology |
Subject Keyword | Adaptive Control Adaptive Fractional-order Control Approximation Theory Control of Electric Power System Droop Control Droop Loop Gain First-order Derivative Fraction Approximation Fractional-order Adaptive Law Fractional-order-based Adaptive Approach Frequency Control Frequency Error Information Frequency Nadir Frequency Variation Frequency-based Information Grid Frequency Control Inertia Control Loop Inertial Control Loop Inertial Loop Gain Interpolation And Function Approximation Numerical Analysis Parameter Space Method Power Generation Control Power Grid Power System Control Power System Frequency Control Power System Stability Prewarping Robust Control Robust System Self Adjusting Control System Stability in Control Theory Tustin Method Wind Power Plant Wind Power System Wind Turbine |
Content Type | Text |
Resource Type | Article |
Subject | Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering |
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