Fast protection strategy for monopole grounding fault of low-voltage DC microgrid

Peng, Yuhang; Song, Ziang; Zeng, Xiankai; Pan, Zhaoyang; Zhang, Shuye; Shen, Xipeng; Wang, Lujun

doi:10.1016/j.epsr.2022.108919

Cited by 5 publications

(2 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Other authors [127] suggested a positive channel metal oxide semiconductor (PMOS) self-powering DC solid-state circuit breaker (CB) to protect against DCMG ground shortcircuit fault events. This CB is adjustable in accordance with voltage levels and doesn't need any additional auxiliary circuits or sophisticated control mechanisms.…”

Section: Nonlocal Methodsmentioning

confidence: 99%

Fault Location for Distribution Smart Grids: Literature Overview, Challenges, Solutions, and Future Trends

et al. 2023

View full text Add to dashboard Cite

Thanks to smart grids, more intelligent devices may now be integrated into the electric grid, which increases the robustness and resilience of the system. The integration of distributed energy resources is expected to require extensive use of communication systems as well as a variety of interconnected technologies for monitoring, protection, and control. The fault location and diagnosis are essential for the security and well-coordinated operation of these systems since there is also greater risk and different paths for a fault or contingency in the system. Considering smart distribution systems, microgrids, and smart automation substations, a full investigation of fault location in SGs over the distribution domain is still not enough, and this study proposes to analyze the fault location issues and common types of power failures in most of their physical components and communication infrastructure. In addition, we explore several fault location techniques in the smart grid’s distribution sector as well as fault location methods recommended to improve resilience, which will aid readers in choosing methods for their own research. Finally, conclusions are given after discussing the trends in fault location and detection techniques.

show abstract

Section: Nonlocal Methodsmentioning

confidence: 99%

Fault Location for Distribution Smart Grids: Literature Overview, Challenges, Solutions, and Future Trends

et al. 2023

View full text Add to dashboard Cite

show abstract

“…References Unipolar configuration [45][46][47][48][49][50][51] Bipolar configuration [45][46][47][52][53][54][55][56][57][58][59] Through the comparison of both configurations, the bipolar DC microgrid presented several advantages, such as a higher number of voltage levels (two instead of one), increased efficiency and a power supply with increased quality [17]. Another important feature is related to reliability, which is higher in the bipolar architecture since, in the case of having a fault in one of the wires, the load can be supplied by the other two healthy lines [17][18][19].…”

Section: Structuresmentioning

confidence: 99%

DC Microgrids: Benefits, Architectures, Perspectives and Challenges

Pires

Cordeiro

2023

Energies

View full text Add to dashboard Cite

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.

show abstract