Exploration of the Theory of Electric Shock Drowning

Kotsch, Jesse; Prussak, Brandon; Morse, Michael S.; Kohl, James G.

doi:10.1109/esw41044.2018.9063881

Cited by 2 publications

(2 citation statements)

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“…Referring to the method of differential protection setting [3][4][5][6][7][8], Equation ( 6) gives a distributed residual current protection criterion.…”

Section: Protective Criterion Designmentioning

confidence: 99%

“…Residual current protection plays a crucial role in earth (leakage) fault detection and protection technology within low-voltage distribution networks [1,2]. However, it is susceptible to influences from line distribution capacitance current and load fluctuation factors [3,4]. The detection of faults by residual current protection primarily relies on analyzing the power frequency amplitude, phase angle, and phasor changes of the residual current at the measurement point.…”

Section: Introductionmentioning

confidence: 99%

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Enhancing Low-Voltage Distribution Network Safety through Advanced Residual Current Protection Techniques

Zhang,

Liu,

Han

et al. 2024

Applied Sciences

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Residual current protection can detect and isolate the grounding (leakage) fault of low-voltage distribution networks in time, which is an essential technical measure to reduce electric shocks and fire accidents and improve power supply safety. This paper systematically analyzes the operating characteristics of low-voltage distribution networks and proposes a distributed residual current protection method based on closed sections. It utilizes the capabilities of a distribution IoT platform to provide comprehensive measurement information for the entire substation area. A method was introduced to divide the low-voltage distribution substation into different protection closed surfaces, defining the current phasor at the external contact point of the closed surface and the remaining current of the closed surface. A calculation method for the critical current based on the remaining current of the closed surface for fault detection was proposed. Case studies have shown that this method is less affected by the inherent current and can significantly improve the sensitivity of protection. For TN-C and TN-C-S systems, in the selection of closed surfaces, the repeated grounding point of the neutral line is excluded from the closed surface. This method can also overcome the impact of residual current changes when load switching, demonstrating the flexibility of the new principle.

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“…Referring to the method of differential protection setting [3][4][5][6][7][8], Equation ( 6) gives a distributed residual current protection criterion.…”

Section: Protective Criterion Designmentioning

confidence: 99%