Grounding and Isolation Requirements in DC Microgrids: Overview and Critical Analysis

Mohammadreza Azizi, Oleksandr Husev (), Oleksandr Veligorskyi, Saeed Rahimpour and Carlos Roncero-Clemente
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Mohammadreza Azizi: Department of Radiotechnic and Embedded Systems, Chernihiv Polytechnic National University, 14027 Chernihiv, Ukraine
Oleksandr Husev: Department of Electrical Power Engineering and Mechatronics, Tallinn University of Technology, 12618 Tallinn, Estonia
Oleksandr Veligorskyi: Department of Radiotechnic and Embedded Systems, Chernihiv Polytechnic National University, 14027 Chernihiv, Ukraine
Saeed Rahimpour: Department of Electrical Power Engineering and Mechatronics, Tallinn University of Technology, 12618 Tallinn, Estonia
Carlos Roncero-Clemente: Department of Power Electronic and Renewable Energies, University of Extremadura, 06006 Badajoz, Spain

Energies, 2023, vol. 16, issue 23, 1-23

Abstract: DC microgrids, along with existing AC grids, are a future trend in energy distribution systems. At the same time, many related issues are still undefined and unsolved. In particular, uncertainty prevails in isolation requirements between AC grids and novel microgrids as well as in the grounding approaches. This paper presents a critical technical analysis and an overview of possible grounding approaches in DC systems and the feasibility of avoiding isolation between AC and DC grids.

Keywords: DC microgrids; isolation requirements; grounding approach (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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