Fundamental Characteristics of Arc Extinction at DC Low Current Interruption with High Voltage (&lt;500V)

Sawa, Kôichiro; Tsuruoka, Masatoshi; Morii, Makito

doi:10.1587/transele.e99.c.1016

Cited by 9 publications

(4 citation statements)

References 11 publications

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“…, , relation graph. Figure 17 shows the graph of applying the experimental result of 200 V/5 A to Equation (13). This result demonstrates that the arc power has its maximum value at 2.5 A where .…”

Section: Power Analysis Between Electrodes At Random Time Within Arc mentioning

confidence: 93%

“…Therefore, it is necessary to understand precisely the initiation, sustenance, and extinguishment of the series breaking arc generated in the protective device during the contact electrodes are separating. Until now, many researches have been made on DC breaking arc generated at electrodes during load currents flow without clearly clarified, the relationship between the voltage and current characteristics at the electrodes [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

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Arc Voltage and Current Characteristics in Low-Voltage Direct Current

Kim

2018

Energies

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Recently, Low-Voltage DC (direct current) distribution systems have received high lights according to the expansion of DC generations and DC loads such as photovoltaics (PV) generations, electric vehicles (EVs), light emitting diodes (LEDs), computers, DC homes, etc. Low-Voltage DC distribution systems have optimistic perspectives since DC has various good aspects compared to alternating current (AC). However, ensuring safety of human and electric facility in Low-Voltage DC is not easy because of arc generation and difficulty of arc-extinguishing. This paper constructs a low-voltage DC circuit and studies the arc interruption that occurs when separating electrodes from where load currents flow. Also, arc extinguishers are experimented upon and analysed in various levels of source voltage and load currents conditions. Voltage and current characteristics for arc interruption are identified based on experimental results, and we establish the electric generation for arc interruption. Further, the voltage–current characteristics and the correlation of arc during arc duration time arc are verified, and the voltage–current equation and DC arc resistance model for the breaking arc are developed.

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Section: Power Analysis Between Electrodes At Random Time Within Arc mentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Arc Voltage and Current Characteristics in Low-Voltage Direct Current

Kim

2018

Energies

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“…The longitudinal magnetic field spatial distribution and the interaction between the magnetic field and the arc have a great influence on the breaking performance of VCB. Therefore, it is very important to analyse the longitudinal magnetic field of contact structure [3].…”

Section: Electromagnetic Analysis Of Vacuum Interruptermentioning

confidence: 99%

Experimental research on arc characteristics for a 40.5‐kV vacuum circuit breaker

Zhan

Liu

et al. 2019

J. eng.

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“…However, recent advancements in High Voltage DC (HVDC) have paved the way for long-distance DC power transmission [1,2]. Despite this progress, a crucial challenge remains: DC current interruption is inherently difficult due to the absence of natural zero crossings, potentially leading to prolonged arc durations compared to AC systems [3,4]. These DC arc faults pose a significant safety hazard, as the sustained high-temperature plasma discharge can trigger catastrophic electrical fires [5].…”

Section: Introductionmentioning

confidence: 99%

Advanced Learning Technique Based on Feature Differences of Moving Intervals for Detecting DC Series Arc Failures

Dang,

Kwak,

Choi

2024

Machines

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DC microgrids are vital for integrating renewable energy sources into the grid, but they face the threat of DC arc faults, which can lead to malfunctions and fire hazards. Therefore, ensuring the secure and efficient operation of DC systems necessitates a comprehensive understanding of the characteristics of DC arc faults and the implementation of a reliable arc fault detection technique. Existing arc-fault detection methods often rely on time–frequency domain features and machine learning algorithms. In this study, we propose an advanced detection technique that utilizes a novel approach based on feature differences between moving intervals and advanced learning techniques (ALTs). The proposed method employs a unique approach by utilizing a time signal derived from power supply-side signals as a reference input. To operationalize the proposed method, a meticulous feature extraction process is employed on each dataset. Notably, the difference between features within distinct moving intervals is calculated, forming a set of differentials that encapsulate critical information about the evolving arc-fault conditions. These differentials are then channeled as inputs for advanced learning techniques, enhancing the model’s ability to discern intricate patterns indicative of DC arc faults. The results demonstrate the effectiveness and consistency of our approach across various scenarios, validating its potential to improve fault detection in DC systems.

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Fundamental Characteristics of Arc Extinction at DC Low Current Interruption with High Voltage (<500V)

Cited by 9 publications

References 11 publications

Arc Voltage and Current Characteristics in Low-Voltage Direct Current

Arc Voltage and Current Characteristics in Low-Voltage Direct Current

Experimental research on arc characteristics for a 40.5‐kV vacuum circuit breaker

Advanced Learning Technique Based on Feature Differences of Moving Intervals for Detecting DC Series Arc Failures

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