Primary frequency regulation of the hybrid power system by deloaded PMSG‐based offshore wind farm using centralised droop controller

Jahan, Effat; Hazari, Md. Rifat; Muyeen, S. M.; Umemura, Atsushi; Takahashi, Rion; Tamura, Junji

doi:10.1049/joe.2018.9326

Cited by 18 publications

(11 citation statements)

References 11 publications

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“…To further provide a relatively long frequency regulation support, wind power curtailment or deloading shall be employed to obtain a sufficient amount of primary reserve. In terms of different physical reactions of WTs, the primary reserve can be obtained via adjusting rotor speed, blade pitch angle and their combinations [9]- [12]. In general, the pitch angle control is usually less desirable as its frequent manipulation might lead to irreversible fatigue of WTs.…”

Section: P Mppmentioning

confidence: 99%

Adaptive Frequency Responsive Control for Wind Farm Considering Wake Interaction

Lyu

Jia

Dong

2021

Journal of Modern Power Systems and Clean Energy

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With the increasing share of wind power, it is expected that wind turbines would provide frequency regulation ancillary service. However, the complex wake effect intensifies the difficulty in controlling wind turbines and evaluating the frequency regulation potential from the wind farm. We propose a novel frequency control scheme for doubly-fed induction generator (DFIG)-based wind turbines, in which the wake effect is considered. The proposed control scheme is developed by incorporating the virtual inertia control and primary frequency control in a holistic way. To facilitate frequency regulation in timevarying operation status, the control gains are adaptively adjusted according to wind turbine operation status in the proposed controller. Besides, different kinds of power reserve control approaches are explicitly investigated. Finally, extensive case studies are conducted and simulation results verify that the frequency behavior is significantly improved via the proposed control scheme.Index Terms--Doubly-fed induction generator (DFIG) -based wind turbine, virtual inertia control, primary frequency control, power reserve control, wake interaction.

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Section: P Mppmentioning

confidence: 99%

Adaptive Frequency Responsive Control for Wind Farm Considering Wake Interaction

Lyu

Jia

Dong

2021

Journal of Modern Power Systems and Clean Energy

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“…Thanks to this control strategy, an active power reserve is obtained by moving the WT from the maximum operating point PMPPT to another operating point in deloloading mode PDEL "Fig. 8" [12][13]. This active power reserve ΔPRES will be used to help restore the system frequency after a disturbance [13].…”

Section: De-loading Operation Of Variable Speed Wtgsmentioning

confidence: 99%

“…8" [12][13]. This active power reserve ΔPRES will be used to help restore the system frequency after a disturbance [13]. This method uses a new reference of the electromagnetic torque unlike MPPT operation.…”

Section: De-loading Operation Of Variable Speed Wtgsmentioning

confidence: 99%

Contribution of Variable Speed Wind Turbine Generator based on DFIG using ADRC and RST Controllers to Frequency Regulation

Chakib

Nasser

Essadki

2021

IJRER

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In the interconnected power systems, there must always be a balance between the amount of electricity produced and the amount of electricity consumed in order to keep the grid frequency stable and nearby to its nominal value. Therefore, any change in consumption can lead to imbalance, instability, load shedding and system frequency disturbances. With the increase of wind energy penetration level in the electrical network, it has become necessary to make wind generators participate in frequency regulation. The fundamental objective of this research paper is to investigate the ability of wind turbine at variable speed equipped with doubly fed induction generator (DFIG) to contribute in the grid frequency regulation. For the purpose of the contribution in the frequency regulation, the wind turbine system must inject a supplementary power support into the electrical network. To do that, two control strategies are adopted: the first one is the synthetic inertia control which uses the kinetic energy reserved and stocked in the turbine and generator rotors of the wind system. The second one is the droop frequency control which includes the deloading method that allows to the VSWT to create a certain reserve active power. Then, each of these control techniques is implemented and their performances are evaluated in case of frequency variation. Moreover, the control structure that uses the combination of these two techniques is also implemented and studied. The active disturbance rejection control strategy (ADRC), the classical PI controller and the polynomial RST controller have been adopted to command the rotor side converter (RSC) of the DFIG which allows it to provide, in case of frequency fault, a support for the power system into the grid by adjusting the rotor speed. The performance of these controllers are tested and compared and the simulation is performed by MATLAB/Simulink simulation software.

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“…The droop controller, which adjust the output power with the variation of system frequency based on the droop setting, is evolved to support primary frequency control [59]. The droop gain and power relation is given by the following equation.…”

Section: ) Droop Control Techniquementioning

confidence: 99%

High-Level Penetration of Renewable Energy Sources Into Grid Utility: Challenges and Solutions

et al. 2020

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The utilization of renewable energy sources (RESs) has become significant throughout the world, especially over the last two decades. Although high-level RESs penetration reduces negative environmental impact compared to conventional fossil fuel-based energy generation, control issues become more complex as the system inertia is significantly decreased due to the absence of conventional synchronous generators. Some other technical issues, high uncertainties, low fault ride through capability, high fault current, low generation reserve, and low power quality, arise due to RESs integration. Renewable energy like solar and wind are highly uncertain due to the intermittent nature of wind and sunlight. Cutting edge technologies including different control strategies, optimization techniques, energy storage devices, and fault current limiters are employed to handle those issues. This paper summarizes several challenges in the integration process of high-level RESs to the existing grid. The respective solutions to each challenge are presented and discussed. A comprehensive list of challenges and solutions, for both wind and solar energy integration cases, are well documented. Finally, the future recommendations are provided to solve the several problems of renewable energy integration which could be key research areas for the industry personnel and researchers.

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Primary frequency regulation of the hybrid power system by deloaded PMSG‐based offshore wind farm using centralised droop controller

Cited by 18 publications

References 11 publications

Adaptive Frequency Responsive Control for Wind Farm Considering Wake Interaction

Adaptive Frequency Responsive Control for Wind Farm Considering Wake Interaction

Contribution of Variable Speed Wind Turbine Generator based on DFIG using ADRC and RST Controllers to Frequency Regulation

High-Level Penetration of Renewable Energy Sources Into Grid Utility: Challenges and Solutions

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