Microgrid protection: An overview of protection strategies in North American microgrid projects

Shiles, J.; Wong, E Laine; Rao, S. Nagaraja; Sanden, Curtis; Zamani, M. Amin; Davari, Masoud; Katiraei, Farid

doi:10.1109/pesgm.2017.8274519

Cited by 45 publications

(36 citation statements)

References 6 publications

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“…However, no protection schemes and industry practices for microgrid projects were described in detail in these publications 2,6 . Other authors reviewed protection schemes 3,4,7‐10 . Oudalov et al 3 and Edwards and Manson 9 presented a detailed description of microgrid protection schemes published by relay original equipment manufacturers.…”

Section: Introductionmentioning

confidence: 99%

“…Laaksonen 10 presented a future protection concept for low‐voltage microgrids using IEC‐61850‐based communication to achieve a fast, selective, and reliable operation for microgrid protection schemes. Shiles et al 8 described different protection schemes for microgrid projects and provided an overview and analysis of protection schemes that have been implemented in major North American microgrid projects. This publication provides a brief overview of microgrid protection issues and potential solutions to help designers define protection requirements for practical microgrids 8 …”

Section: Introductionmentioning

confidence: 99%

“…Shiles et al 8 described different protection schemes for microgrid projects and provided an overview and analysis of protection schemes that have been implemented in major North American microgrid projects. This publication provides a brief overview of microgrid protection issues and potential solutions to help designers define protection requirements for practical microgrids 8 …”

Section: Introductionmentioning

confidence: 99%

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Protection schemes used in North American microgrids

Piesciorovsky

Smith

Ollis

2020

Int Trans Electr Energ Syst

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Summary This study reviewed existing conventional and nonconventional protection schemes for grid‐connected and islanded mode operations in North American microgrid projects. The microgrid projects investigated in this study used different types of distributed energy resources (DERs) and integrated hydropower/diesel generators, gas/steam/wind turbines, and photovoltaic systems with energy storage. In this work, conventional protection schemes were defined as those within the IEEE Standard C37.2‐2008, whereas nonconventional schemes were those not defined within this standard. The pros and cons of conventional and nonconventional protection schemes were discussed in detail. The overvoltage, undervoltage, and frequency elements were the most common conventional protection schemes applied in microgrid projects in North America. These protection elements were used to detect the islanded conditions and faults that could not be sensed by overcurrent relays because of small fault currents contributed by low‐inertia DERs and power‐electronic sources. Directional overcurrent elements were used to distinguish between external (grid) and internal (microgrid) faults. Adaptive protection was the most popular nonconventional protection scheme applied to the microgrid projects. In conclusion, different types of DERs and operational modes must be considered in order to address the protection and control challenges of each microgrid and to obtain the best technical and economical solution.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Protection schemes used in North American microgrids

Piesciorovsky

Smith

Ollis

2020

Int Trans Electr Energ Syst

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“…Protection: A conventional distribution network, the current flow of which is unidirectional, is equipped with protection devices, such as reclosers, circuit breakers, fuses and relays, to ensure fault detection and isolation, with the former generally carried out using over-current relays. However, integrating DG units in a radial network makes the network a complicated one due to the difficulty of analysing the direction and magnitude of the bidirectional current flow [150]. In addition, DG units in a microgrid need to be protected in both grid-connected and islanded operations, where a fault current changes significantly for altering the modes.…”

Section: Challenges Of Microgridsmentioning

confidence: 99%

Evolution of Microgrids with Converter-Interfaced Generations: Challenges and Opportunities

Hossain¹,

Pota²,

Hossain³

et al. 2018

Preprint

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Although microgrids facilitate the increased penetration of distributed generations (DGs) and improve the security of power supplies, they have some issues that need to be better understood and addressed before realising the full potential of microgrids. This paper presents a comprehensive list of challenges and opportunities supported by a literature review on the evolution of converter-based microgrids. The discussion in this paper presented with a view to establishing microgrids as distinct from the existing distribution systems. This is accomplished by, firstly, describing the challenges and benefits of using DG units in a distribution network and then those of microgrid ones. Also, the definitions, classifications and characteristics of microgrids are revised according to their specific roles to provide a sound basis for novice researchers to undertake ongoing research on microgrids.

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“…While the majority of research presented to date is based on radial networks, studies of the stability of mesh ones are still needed. a radial network makes the network a complicated one due to the difficulty of analysing the direction and magnitude of the bidirectional current flow [152]. In addition, DG units in a microgrid need to be protected in both grid-connected and islanded operations, where a fault current changes significantly for altering the modes.…”

mentioning

confidence: 99%

Evolution of Microgrids with Converter-Interfaced Generations: Challenges and Opportunities

Hossain¹,

Pota²,

Hossain³

et al. 2019

Preprint

View full text Add to dashboard Cite

Although microgrids facilitate the increased penetration of distributed generations (DGs) and improve the security of power supplies, they have some issues that need to be better understood and addressed before realising the full potential of microgrids. This paper presents a comprehensive list of challenges and opportunities supported by a literature review on the evolution of converter-based microgrids. The discussion in this paper presented with a view to establishing microgrids as distinct from the existing distribution systems. This is accomplished by, firstly, describing the challenges and benefits of using DG units in a distribution network and then those of microgrid ones. Also, the definitions, classifications and characteristics of microgrids are summarised to provide a sound basis for novice researchers to undertake ongoing research on microgrids.

show abstract

Microgrid protection: An overview of protection strategies in North American microgrid projects

Cited by 45 publications

References 6 publications

Protection schemes used in North American microgrids

Protection schemes used in North American microgrids

Evolution of Microgrids with Converter-Interfaced Generations: Challenges and Opportunities

Evolution of Microgrids with Converter-Interfaced Generations: Challenges and Opportunities

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