Studying grounding arrangements of the LVDC system through simulation

Shabani, Arash; Mazlumi, Kazem

doi:10.1177/0037549717752069

Cited by 3 publications

(1 citation statement)

References 21 publications

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“…In distribution networks, grounding is very important because it protects humans and lowers the risk of fire accidents. The literature on DC distribution networks addressed several grounding methods for DC distribution networks [194,195,[201][202][203][204][205][206][207]. These grounding methods are shown in Figure 4.…”

Section: Grounding Schemes In DCmentioning

confidence: 99%

Future Distribution Networks: A Review

Javid,

Kocar,

Holderbaum

et al. 2024

Energies

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This manuscript presents a comprehensive review of recent advancements in electrical distribution networks, with a specific focus on the incorporation of direct current (DC) applications. The research aims to comprehensively address the current and future aspects of DC, spanning from the distribution level to the utilization level. The renewed interest in DC power systems has led to the investigation of several transitional challenges in recent years. A significant portion of these efforts has been dedicated to determining the feasibility of applying DC to specific use cases. Additionally, the literature has explored design considerations such as system architecture and voltage levels, the integration of DC into existing distribution networks, load flow (LF) computations, and the distinct safety concerns associated with DC power systems. In this paper, the various research endeavors are categorized, evaluated, and scrutinized to assess the current state of the transition from a purely alternating current (AC) distribution system to a solely DC or hybrid AC/DC distribution system. A bibliometric analysis is conducted, constructing a network of co-occurrence based on author-provided keywords, which reveals the primary research foci in this domain. The barriers hindering the widespread adoption of DC distribution systems and potential solutions are also discussed. Moreover, this article synthesizes ongoing efforts to address these obstacles and delineates future research directions by emphasizing the existing knowledge gaps.

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Section: Grounding Schemes In DCmentioning

confidence: 99%

Future Distribution Networks: A Review

Javid,

Kocar,

Holderbaum

et al. 2024

Energies

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Study on the Charge Transfer Criterion for the Pole-to-Ground Fault in DC Distribution Networks

Ren

2019

IEEE Access

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After a pole-to-ground fault occurs in the DC distribution network using low current grounding, the fault pole voltage drops while that of the non-fault pole rises, which is harmful to equipment insulation and operational safety. Therefore, it is necessary to accurately identify and locate faults with protection equipment. In order to solve the pole-to-ground fault in DC distribution networks using low current grounding, the characteristics of different fault current loops are studied. The distributed capacitance discharging loop at the fault pole, the distributed capacitance charging loop at the non-fault pole, and the feeding of system grounding loop current into the fault grounding point current are analyzed. On this basis, a protection criterion for distinguishing the internal fault from the external fault by the amount of transferred charges, which can be calculated based on the transient differential current, is proposed in this paper. The simulation results show that the proposed pole-to-ground fault criterion can reliably identify the fault line while being immune to the influence of transitional resistance.INDEX TERMS DC power distribution, pole-to-ground fault, capacitance charge, fault line location.

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