Grid Code-Dependent Frequency Control Optimization in Multi-Terminal DC Networks

Hoffmann, Melanie; Chamorro, Harold R.; Lotz, Marc René; Maestre, J. M.; Rouzbehi, Kumars; González-Longatt, Francisco; Kurrat, Michael; Alvarado-Barrios, Lázaro; Sood, Vijay K.

doi:10.3390/en13246485

Cited by 5 publications

(2 citation statements)

References 41 publications

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“…In order to address the need for improved frequency response in a GFM converter, the authors in Ref. [13] introduce an optimization approach. The optimization algorithm focuses on adjusting control parameters to optimize key performance indicators such as rate of change of frequency (RoCoF), nadir, and settling time.…”

Section: Introductionmentioning

confidence: 99%

Grid Forming Converter Control System Synthesis: A Static Output Feedback Approach

Rehimi,

Bevrani,

Urabe

et al. 2024

IEEJ Transactions Elec Engng

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This paper proposes an effective control synthesis strategy to stabilize grid forming converters in the presence of disturbances. The conventional control system for a grid forming converter is based on paralleled and cascaded proportional‐integral (PI) controllers, which are widely used in the industry due to their simplicity and reliability. However, the sequential adjustment of PI gains in different control loops, without consideration of dynamic interconnections limits their performance and capability. To address this limitation, the present paper introduces a control design method based on static output feedback theory. The proposed control scheme reduces the dynamic control design problem to an effective gain scheduling problem. In the proposed methodology, without removing the existing practical control structure, its dynamic parts are moved to the open‐loop system, and simultaneous scheduling of all remaining control gains is achieved during one control design process. MATLAB simulations were conducted to evaluate the performance of the designed control system, and compare it with the conventional control one in terms of step response characteristics. The results demonstrate the superiority of the proposed controller, ensuring system stability and exhibiting improved performance. The proposed control framework provides several advantages, including keeping stability in various disturbance conditions, simultaneous tuning of all control parameters, and no need to change the existing simple control structure. © 2024 Institute of Electrical Engineers of Japan. Published by Wiley Periodicals LLC.

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Section: Introductionmentioning

confidence: 99%

Grid Forming Converter Control System Synthesis: A Static Output Feedback Approach

Rehimi,

Bevrani,

Urabe

et al. 2024

IEEJ Transactions Elec Engng

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show abstract

“…The MTDC wind power integration system has the advantages of having no transmission distance limitation, no commutation failure, and enriched system efficiency [9,10]. However, it is undeniable that faults are prone to spreading in the DC grid due to its reticulate structure [11,12].…”

Section: Introductionmentioning

confidence: 99%

A Smart Fault-Tackling Strategy Based on PFTE for AC Three-Phase-to-Ground Faults in the Multi-Terminal HVDC Wind Power Integration System: Further Foundings

Zhang

Cao

2022

Energies

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This paper describes a smart fault tackling strategy based on power flow transfer entropy (PFTE) for AC three-phase-to-ground (TPG) faults in the multi-terminal HVDC (MTDC) wind power integration system. The fault characteristics and transient energy transfer of different positions and properties are analyzed. Then, a double integral discrimination method based on PFTE is proposed to further distinguish the fault property. Considering the power flow balance, an adaptive coordination strategy of wind farms and energy dissipation resistors is proposed to deal with different AC faults. Finally, a smart fault-tackling strategy based on PFTE for AC three-phase-to-ground (TPG) faults in the MTDC wind power integration system is proposed. Under the proposed smart fault-tackling strategy, the MTDC wind power integration system achieves uninterrupted operation during any AC TPG fault at the receiving end. The experiment results confirm the applicability of the proposed fault-tackling strategy.

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Grid connected converters

Bevrani

Kato

Ise

et al. 2022

Grid Connected Converters

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Grid Code-Dependent Frequency Control Optimization in Multi-Terminal DC Networks

Cited by 5 publications

References 41 publications

Grid Forming Converter Control System Synthesis: A Static Output Feedback Approach

Grid Forming Converter Control System Synthesis: A Static Output Feedback Approach

A Smart Fault-Tackling Strategy Based on PFTE for AC Three-Phase-to-Ground Faults in the Multi-Terminal HVDC Wind Power Integration System: Further Foundings

Grid connected converters

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