A New Perspective for Relating Virtual Inertia With Wideband Oscillation of Voltage in Low-Inertia DC Microgrid

Li, Chang; Yang, Yaqian; Dragičević, Tomislav; Blaabjerg, Frede

doi:10.1109/tie.2021.3100932

Cited by 26 publications

(6 citation statements)

References 27 publications

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“…Previously, there are several research works deal with the problems of low-inertia systems and MGs. In [9], the authors introduce a proposed virtual synchronous control technique for mitigating wideband oscillations in a DC MG by emulating inertia and damping. This study explores the relationship between rate of change of voltage (RoCoV), DC voltage nadir, damping, inertia, and wideband oscillation and offers a unified concept connecting oscillation-related stability to transient responses.…”

Section: B Related Publicationsmentioning

confidence: 99%

“…where N i is the total number of SGs, and S total is the total generation capacity including SG and DERs. Considering (9), when the DERs penetrate to the MG while the term Ni i=1 M i S i (t) is constant. Accordingly, this scenario increases S total (t) and subsequently decreases H total (t).…”

Section: Overview Of Variable Inertia Mg and Adaptive Data-driven-bas...mentioning

confidence: 99%

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An Adaptive Data-Driven-Based Control for Voltage Control Loop of Grid-Forming Converters in Variable Inertia MGs

Pinthurat,

Kongsuk,

Surinkaew

et al. 2024

IEEE Access

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In the transition towards sustainable energy systems, microgrid (MG) plays a pivotal role, especially in the context of variable-inertia MGs that integrate renewable energy sources (RESs) and distributed energy resources (DERs). Maintaining stable voltage control within such grids is imperative for reliable operation. This paper presents an adaptive data-driven control technique for the voltage control loop of grid-forming converters in variable-inertia MGs. The primary objective is to enhance control performance while accommodating the unpredictable nature of renewable energy sources. The approach utilizes advanced data-driven algorithms to continuously monitor and adjust control parameters based on real-time grid conditions. This adaptability allows for effective management of varying inertia and load demand, ensuring optimal grid performance. The data-driven nature of the approach enables self-adaptability, making it suitable for the dynamic MG environment. Simulation results and case studies validate the efficacy of the adaptive data-driven control technique in optimizing voltage control within variable-inertia MGs with high penetration RESs and DERs. This innovative approach represents a significant stride towards fully controlling RESs and DERs to support MG's voltage without requiring exact MG's parameters, thereby ensuring grid stability and power quality, and supporting the transition towards sustainable energy systems.

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Section: B Related Publicationsmentioning

confidence: 99%

Section: Overview Of Variable Inertia Mg and Adaptive Data-driven-bas...mentioning

confidence: 99%

An Adaptive Data-Driven-Based Control for Voltage Control Loop of Grid-Forming Converters in Variable Inertia MGs

Pinthurat,

Kongsuk,

Surinkaew

et al. 2024

IEEE Access

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“…The subject of the isolated DC microgrid is something that has been studied in the last few years. However, this is still considered a challenge since there are many aspects that need to be addressed, such as, for example, the inertial control associated with these networks [103][104][105][106]. The voltage of DC microgrids is prone to oscillation.…”

Section: Challengesmentioning

confidence: 99%

DC Microgrids: Benefits, Architectures, Perspectives and Challenges

Pires

Cordeiro

2023

Energies

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One of the major paradigm shifts that will be predictably observed in the energy mix is related to distribution networks. Until now, this type of electrical grid was characterized by an AC transmission. However, a new concept is emerging, as the electrical distribution networks characterized by DC transmission are beginning to be considered as a promising solution due to technological advances. In fact, we are now witnessing a proliferation of DC equipment associated with renewable energy sources, storage systems and loads. Thus, such equipment is beginning to be considered in different contexts. In this way, taking into consideration the requirement for the fast integration of this equipment into the existing electrical network, DC networks have started to become important. On the other hand, the importance of the development of these DC networks is not only due to the fact that the amount of DC equipment is becoming huge. When compared with the classical AC transmission systems, the DC networks are considered more efficient and reliable, not having any issues regarding the reactive power and frequency control and synchronization. Although much research work has been conducted, several technical aspects have not yet been defined as standard. This uncertainty is still an obstacle to a faster transition to this type of network. There are also other aspects that still need to be a focus of study and research in order to allow this technology to become a day-to-day solution. Finally, there are also many applications in which this kind of DC microgrid can be used, but they have still not been addressed. Thus, all these aspects are considered important challenges that need to be tackled. In this context, this paper presents an overview of the existing and possible solutions for this type of microgrid, as well as the challenges that need to be faced now.

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“…However, several challenges come to the surface with this integration. The low inertia of these inverter-based resources results in a lack of stability in certain operating conditions, such as severe load patterns or constant power loads [7,8]. Further, the imbalance between load demand and generated power might lead to generation curtailment or load-shedding, which requires additional energy management systems with load and generation forecasting features to deal with such conditions [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Hardware Implementation of a Resilient Energy Management System for Networked Microgrids

Hussein,

Rafin,

Abdelrahman

et al. 2024

WEVJ

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A networked microgrid is composed of multiple nearby microgrids linked together to gain additional flexibility for resilient operations. Networked microgrids collaborate to prevent power shortages in microgrid clusters by sharing critical renewable and energy storage resources. However, controlling the local resources of each microgrid, including the energy storage systems’ charging and discharging, maintaining the DC bus voltage, and even overseeing the power shared by multiple microgrids, is challenging. Therefore, a microgrid control technique and distributed energy management are used cooperatively in this study to handle the shared power between a system of networked microgrids incorporating photovoltaics and battery energy storage systems. Numerical simulation results from a networked microgrid system verify the accuracy and soundness of the suggested distributed energy management under several operating conditions, including renewable uncertainties and sequential load variations in different zones. The applicability of the suggested technique is confirmed by hardware implementation, and several operational scenarios further evaluate the proposed system on a practical two-microgrid system located in the Florida International University (FIU) testbed.

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A New Perspective for Relating Virtual Inertia With Wideband Oscillation of Voltage in Low-Inertia DC Microgrid

Cited by 26 publications

References 27 publications

An Adaptive Data-Driven-Based Control for Voltage Control Loop of Grid-Forming Converters in Variable Inertia MGs

An Adaptive Data-Driven-Based Control for Voltage Control Loop of Grid-Forming Converters in Variable Inertia MGs

DC Microgrids: Benefits, Architectures, Perspectives and Challenges

Hardware Implementation of a Resilient Energy Management System for Networked Microgrids

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