Is it feasible a massive deployment of low voltage direct current microgrids renewable-based? A technical and social sight

Castillo-Calzadilla, Tony; Cuesta, M.A.; Olivares-Rodríguez, Cristian; Macarulla, Ana M.; Legarda, Jon; Borges, Cruz E.

doi:10.1016/j.rser.2022.112198

Cited by 29 publications

(15 citation statements)

References 168 publications

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“…Bus configurations are usually used at the distribution level and the standardization rates are 48V and 380V. [16] To provide a techno-econosocial-environmental study to address challenges in sustainability in the Korean Energy Sector They employed deep neural networks to get the time series data for the country, proposed hybrid renewable energy sources using HOMER Pro then employed an algorithm to generate a renewable energy map of the country. [17] Nigeria's electrical system uses several kinds of smart grid technologies and these are addressed and analyzed in this study, along with their effects, distribution, and incorporation with the nation's conventional electrical infrastructure.…”

Section: Year Of Publicationmentioning

confidence: 99%

The Impact of Stand-Alone Systems in Nigeria’s Energy Distribution Sector and Present-Day Challenges Faced

Stephanie,

Amanesi Abubakar,

Faith Ademola

2024

IOP Conf. Ser.: Earth Environ. Sci.

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The electricity situation in Nigeria has become alarming, with the population increasing over the years, the supply of electricity has failed to reach the demand. With over 223 million residents in the country, 95 million people lack an adequate supply of electricity. 91% of the supply is allocated to the urban areas while 30% at most reaches the rural economy due to constraints in the electrical grid. This has caused overdependence on other sources of generation such as diesel generators, and other means of generation. Using these other sources of generation has contributed to the nation’s carbon footprint and global warming. This paper aims to study the impact of stand-alone microgrids and how they could curb the electricity deficit in Nigeria, there is also a brief background on renewable energy as it forms the foundation of microgrids. This paper concludes that though microgrids could mitigate global warming and curb the country’s electricity deficit, factors such as security and management are preventing the successful implementation of these means.

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Section: Year Of Publicationmentioning

confidence: 99%

The Impact of Stand-Alone Systems in Nigeria’s Energy Distribution Sector and Present-Day Challenges Faced

Stephanie,

Amanesi Abubakar,

Faith Ademola

2024

IOP Conf. Ser.: Earth Environ. Sci.

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“…Their integration is seen as natural in LVDC systems once it will be possible to achieve meaningful savings [8][9][10]. Another aspect is the impact on social welfare that DC microgrids will bring [11]. This kind of microgrid, especially in the context of off-grid systems, could be an important opportunity to increase the quality of life of many people, particularly those in isolated towns and villages.…”

Section: Introductionmentioning

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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“…Nowadays, the development of power electronics technology, the wider difusion of renewable energy sources (RESs), and the integration of energy storage systems (ESSs) are supporting the realization of direct-current (DC) grids [1,2]. Te advantages of a dc grid compared to the traditional one are well known [3] and include higher energy efciency [4] and natural interfaces with RESs, electronic loads, and ESSs [5].…”

Section: Introductionmentioning

confidence: 99%

Short-Circuit Protection Schemes for LVDC Microgrids Based on the Combination of Hybrid Circuit Breakers and Mechanical Breakers

Lazzari¹,

Piegari

2023

International Transactions on Electrical Energy Systems

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In recent years, low-voltage direct current (LVDC) microgrids are becoming more attractive because they represent a solution to integrate renewable sources, storage, and electronic loads bringing some advantages in comparison with traditional AC grids. However, the protection of such a network involves many challenges, especially in the case of LVDC microgrids with more than one feeder and multiple energy sources. Indeed, the traditional protection breakers used for an AC grid cannot isolate the faults and protect the components of a DC grid, while the use of solid-state circuit breakers increases energy losses. This paper deals with the analysis and design of the protection schemes for LVDC microgrids through the combination of mechanical circuit breakers and hybrid circuit breakers. This solution has the advantage of energy loss reduction but introduces further issues due to the slow transition times of the mechanical circuit breakers. Thus, a completely decentralized control system capable of overcoming the fast fault-clearing time, cost-effectiveness, and selectivity issues is designed to protect from pole-to-pole faults. The proposed control strategy is compared with a centralized protection scheme available in the literature through numerical simulation. The two algorithms show similar performances, with a mean voltage dip duration of less than 30 ms and a maximum voltage dip duration of about 100 ms in the most severe fault condition, but the proposed solution is more reliable and flexible since it does not depend on the communication system.

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Is it feasible a massive deployment of low voltage direct current microgrids renewable-based? A technical and social sight

Cited by 29 publications

References 168 publications

The Impact of Stand-Alone Systems in Nigeria’s Energy Distribution Sector and Present-Day Challenges Faced

The Impact of Stand-Alone Systems in Nigeria’s Energy Distribution Sector and Present-Day Challenges Faced

DC Microgrids: Benefits, Architectures, Perspectives and Challenges

Short-Circuit Protection Schemes for LVDC Microgrids Based on the Combination of Hybrid Circuit Breakers and Mechanical Breakers

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