2017 IEEE Second International Conference on DC Microgrids (ICDCM) 2017
DOI: 10.1109/icdcm.2017.8001060
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Characterization of series arcs in LVdc microgrids

Abstract: This paper provides an empirical study on series arc behavior in low voltage dc microgrids. The response of an R-L-C dc microgrid abstraction towards series arcs is studied experimentally for varying grid inductance, dc voltages, load capacitances and load currents. In order to account for the stochastic nature of arcs, experiments are repeated multiple times under similar conditions to gain statistical significance. Thereby, insight on percentage occurrence and burn time of initiated series arcs is provided. … Show more

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Cited by 6 publications
(4 citation statements)
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“…The inductance of the cables within the system will lower the fault current and the zero crossing helps extinguishing the arc automatically. However, absence of current zero crossing in DC nanogrid makes both series and parallel electric arcs a concern [23,24]. During short circuits, the fault current in DC is higher and the absence of zero crossing makes the arc persist which is hazardous.…”
Section: Research Contributionmentioning
confidence: 99%
“…The inductance of the cables within the system will lower the fault current and the zero crossing helps extinguishing the arc automatically. However, absence of current zero crossing in DC nanogrid makes both series and parallel electric arcs a concern [23,24]. During short circuits, the fault current in DC is higher and the absence of zero crossing makes the arc persist which is hazardous.…”
Section: Research Contributionmentioning
confidence: 99%
“…This response is a typical second order behaviour of a series R-L-C circuit depending on the value of grid inductance and resistance, as well as the load capacitance. Some empirical understanding of load voltage behaviour during series arcing events is drawn in [5]. The load voltage response and its interaction with the band pass filter, as the grid inductance, resistance and load capacitance vary, is important in determining the sensitivity of the designed algorithm to trigger at a certain set threshold voltage.…”
Section: Boundaries Of Operationmentioning
confidence: 99%
“…A stable dc voltage source with inductance (L dc ) and resistance (R dc ) represent the grid parameters before the point of common coupling (PCC). Using this abstraction, we can recreate the effect of varying grid inductance and resistance on the fall time of the load voltage and the series arc characteristics [5,11]. Two capacitor paralleled constant resistance loads LOAD1 and LOAD2 are attached to the PCC.…”
Section: System Description and Test Casesmentioning
confidence: 99%
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