Fault ride-through capability of a microgrid with wtgs and supercapacitor storage during balanced and unbalanced utility voltage sags

Gkavanoudis, Spyros I.; Oureilidis, Konstantinos O.

doi:10.1109/icrera.2013.6749757

Cited by 16 publications

(6 citation statements)

References 18 publications

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“…The super-capacitor ESS is attracting considerable interest as an effective equipment to improve the LVRT capability of wind turbine generator based microgrids. Authors in [270] have investigated the LVRT capability of supercapacitors for a DFIG based microgrid under main grid faults. The super-capacitor ESS provides additional reactive power due to the voltage imbalance during the main grid fault to keep the microgrid connected by maintaining the LVRT requirements.…”

Section: ) Lvrt Capability Improvement Of Wind Turbine Generator Dominated Microgrid With Super-capacitor Essmentioning

confidence: 99%

Stability and Control Aspects of Microgrid Architectures–A Comprehensive Review

et al. 2020

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Self-governing small regions of power systems, known as "microgrids", are enabling the integration of small-scale renewable energy sources (RESs) while improving the reliability and energy efficiency of the electricity network. Microgrids can be primarily classified into three types based on their voltage characteristics and system architecture; 1) AC microgrids, 2) DC microgrids, and 3) Hybrid AC/DC microgrids. This paper presents a comprehensive review of stability, control, power management and fault ride-through (FRT) strategies for the AC, DC, and hybrid AC/DC microgrids. This paper also classifies microgrids in terms of their intended application and summarises the operation requirements stipulated in standards (e.g., IEEE Std. 1547. The control strategies for each microgrid architecture are reviewed in terms of their operating principle and performance. In terms of the hybrid AC/DC microgrids, specific control aspects, such as mode transition and coordinated control between multiple interlinking converters (ILCs) and energy storage system (ESS) are analysed. A case study is also presented on the dynamic performance of a hybrid AC/DC microgrid under different control strategies and dynamic loads. Hybrid AC/DC microgrids shown to have more advantages in terms of economy and efficiency compared with the other microgrid architectures. This review shows that hierarchical control schemes, such as primary, secondary, and tertiary control are very popular among all three microgrid types. It is shown that the hybrid AC/DC microgrids require more complex control strategies for power management and control compared to AC or DC microgrids due to their dependency on the ILC controls and the operation mode of the hybrid AC/DC microgrid. Case study illustrated the significant effects of microgrid feeder characteristics on the dynamic performance of the hybrid AC/DC microgrid. It is also revealed that any transient conditions either in the AC or DC microgrids could propagate through the ILC affecting the entire microgrid dynamic performance. Additionally, the critical control issues and the future research challenges of microgrids are also discussed in this paper.INDEX TERMS Energy storage system (ESS), hybrid AC/DC microgrid, IEEE Std. 1547-2018, interlinking converter (ILC), microgrid stability, power management, renewable energy sources (RESs).

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Section: ) Lvrt Capability Improvement Of Wind Turbine Generator Dominated Microgrid With Super-capacitor Essmentioning

confidence: 99%

Stability and Control Aspects of Microgrid Architectures–A Comprehensive Review

et al. 2020

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“…The voltage sags are also closely related to the low-voltage ride-through (LVRT) or fault ridethrough (FRT) studies in microgrids; hence relevant literature reports strategies that can be used to mitigate voltage sags [44][45][46][47][48], as well as LVRT strategies for microgrids [49][50][51]. Therefore, both voltage sag mitigation strategies and LVRT strategies are discussed here.…”

Section: Managing Voltage Sags/dipsmentioning

confidence: 99%

“…Thus, it is essential to select the appropriate energy storage technology (i.e., energy storage technology with high power density) if the ESS is dictated to mitigate voltage sags in the microgrid network. For example, in [50], a supercapacitor-based ESS is proposed for improving FRT capability of the microgrid.…”

Section: Managing Voltage Sags/dipsmentioning

confidence: 99%

“…As delineated in [50], the voltage sags could be symmetrical or asymmetrical, therefore under asymmetrical voltage sags both positive and negative sequence voltage should be compensated in order mitigate the voltage sag and improve the LVRT capability to the microgrid. A negative and positive sequence droop based control method is proposed in [34] to mitigate the asymmetrical voltage sags in microgrids.…”

Section: Managing Voltage Sags/dipsmentioning

confidence: 99%

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Review of Ship Microgrids: System Architectures, Storage Technologies and Power Quality Aspects

Jayasinghe

Meegahapola²,

Fernando³

et al. 2017

Inventions

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Ship microgrids have recently received increased attention, mainly due to the extensive use of power electronically interfaced loads and sources. Characteristics of these microgrids are similar to islanded terrestrial microgrids, except the presence of highly dynamic large loads, such as propulsion loads. The presence of such loads and sources with power-electronic converter interfaces lead to severe power quality issues in ship microgrids. Generally, these issues can be classified as voltage variations, frequency variations and waveform distortions which are commonly referred to as harmonic distortions. Amongst the solutions identified, energy storage is considered to be the most promising technology for mitigating voltage and/or frequency deviations. Passive filtering is the commonly used technology for reducing harmonic distortions, which requires bulky capacitors and inductors. Active filtering is emerging as an alternative, which could be realised even within the same interfacing converter of the energy storage system. The aim of this paper is to investigate recent developments in these areas and provide readers with a critical review on power quality issues, energy storage technologies and strategies that could be used to improve the power quality in ship microgrids. Moreover, a brief introduction to ship power system architectures is also presented in the paper.

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“…The third commonly used approach is to implement the FRT control on individual DRERs (as shown in Figure c), such that the microgrid as a single controlled entity can ride‐through grid faults (Al‐Nasseri et al, ; Dhar & Dash, , ; Gopalan et al, ; Majumder, ; Merino et al, ; Ndou et al, ). In some research studies, the FRT scheme is implemented at the PE‐interfaced WECSs to assist microgrid ride‐through grid faults (Gkavanoudis & Demoulias, ; Gkavanoudis, Oureilidis, & Demoulias, ). The supercapacitor‐based energy storage system is incorporated at the DC link of the WECS to provide enhanced reactive power support during the symmetrical and asymmetrical grid faults, resulting in improved microgrid voltage, and thereby assist the microgrid FRT.…”

Section: Frt Strategies For Selected Drersmentioning

confidence: 99%

Role of fault ride‐through strategies for power grids with 100% power electronic‐interfaced distributed renewable energy resources

Meegahapola

Datta

Nutkani

et al. 2018

WIREs Energy & Environment

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Electricity networks are evolving rapidly with the large-scale integration of power electronic (PE)-interfaced distributed renewable energy resources (DRERs). With this rapid deployment of PE-interfaced renewables, requirements set for the PE-interfaced DRERs have also evolved to maintain grid security and reliability. Fault ride-through (FRT) is an essential requirement which should be adhered by DRERs, which will ensure security and reliability of the power system during grid faults. This paper critically reviews the existing FRT standards (grid-code requirements) and FRT strategies implemented/ proposed for major DRERs, such as wind energy conversion systems (WECSs), solar photovoltaic (PV) systems, and microgrids. According to the review, robust FRT strategies are implemented/proposed DRERs, however, the FRT grid codes are presently developed with the perspective of both synchronous and renewable generation operating in the power system. However, this current approach should be augmented considering 100% PE-based renewable energy scenarios, and emerging issues, such as high penetration of PE-interfaced small-scale renewable generators (e.g., domestic solar-PV systems) and recurring grid faults, to achieve a sustainable renewable energy future. This article is categorized under: Concentrating Solar Power > Systems and Infrastructure Wind Power > Systems and Infrastructure Photovoltaics > Systems and Infrastructure K E Y W O R D S distributed renewable energy resources (DRERs), fault ride-through (FRT), gridcode requirements, microgrids, power electronic converters, solar-PV, wind energy conversion systems (WECSs)

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Fault ride-through capability of a microgrid with wtgs and supercapacitor storage during balanced and unbalanced utility voltage sags

Cited by 16 publications

References 18 publications

Stability and Control Aspects of Microgrid Architectures–A Comprehensive Review

Stability and Control Aspects of Microgrid Architectures–A Comprehensive Review

Review of Ship Microgrids: System Architectures, Storage Technologies and Power Quality Aspects

Role of fault ride‐through strategies for power grids with 100% power electronic‐interfaced distributed renewable energy resources

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