The Effects of Arcing Ground Faults on Low-Voltage System Design

Dunki-Jacobs, J. R.

doi:10.1109/tia.1972.349750

Cited by 74 publications

(11 citation statements)

References 6 publications

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“…Arc discharges can be divided into series and parallel types depending on the generation mechanism [9,10].…”

Section: Series Arc Dischargementioning

confidence: 99%

Frequency Spectrum Analysis of Electromagnetic Waves Radiated by Electric Discharges

Park¹,

Kil²,

Cheon³

et al. 2012

Journal of Electrical Engineering and Technology

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-In this paper, we analyzed the frequency spectrum of the electromagnetic waves radiated by an electric discharge as a basic study to develop an on-line diagnostic technique for power equipment installed inside closed-switchboards. In order to simulate local and series arc discharges caused by an electric field concentration and poor connections, three types of electrode systems were fabricated, consisting of needle and plane electrodes and an arc generator meeting the specifications of UL 1699. The experiment was carried out in an electromagnetic anechoic chamber, and the measurement system consisted of a PD free transformer, a loop antenna with a frequency bandwidth of 150 kHz-30 MHz, an ultra log periodic antenna with a frequency bandwidth of 30 MHz-2 GHz, and an EMI test receiver with a frequency bandwidth of 3 Hz-3 GHz. According to the experimental results, the frequency spectra of the electrical discharges were widely distributed across a range of 150 kHz-400 MHz, depending on the defects, while commonly found between 150 kHz and 10 MHz. Therefore, considering the ambient noise and antenna characteristics, the best frequency bandwidth for a measurement system to monitor abnormal conditions by detecting electromagnetic waves in closedswitchboards is 150 kHz-10 MHz.

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“…Arc discharges can be divided into series and parallel types depending on the generation mechanism [9,10].…”

Section: Series Arc Dischargementioning

confidence: 99%

Frequency Spectrum Analysis of Electromagnetic Waves Radiated by Electric Discharges

Park¹,

Kil²,

Cheon³

et al. 2012

Journal of Electrical Engineering and Technology

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“…Kaufmann and Page [12], and later Dunki-Jacobs [13] proposed a valid model explaining this phenomenon using spark gap. This air gap will not conduct until the applied voltage reaches the breakdown point.…”

Section: Arc Current Naturementioning

confidence: 99%

Evaluation of a new proposal for an arcing fault detection method based on wavelet packet analysis

Lazkano¹,

Ruiz²,

Aramendi³

et al. 2004

Int Trans Elec Energy Syst

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SUMMARYThis paper presents a new proposal for detection of arcing faults and evaluates the detection rate and the security level of the proposed method. This method is based on analysis of three-phase unbalanced current, easily accessible feeder 3I 0 , using decomposition of the signal by means of wavelet transform techniques. Combining both temporal and frequency localizing properties, criteria are set in order to detect electric arc existence related to high impedance faults. The method has been tested with signals from staged fault records, normal condition records and substation event records. The test results show that the proposal is a satisfactory fault detection method and the relevant results are presented.

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“…The fault between conductors or between conductor and ground is in all probability an arcing fault [2] [3]. The impedance of an arcing fault has been estimated to reduce the minimum fault current by a factor of .38 for line to ground and .74 for line to line [2]. In this case the arc current was probably near the minimum [4].…”

Section: Emergency System Performancementioning

confidence: 99%

Integrity of emergency systems [UPS]

Johnson¹

1997 IEEE Industrial and Commercial Power Systems Technical Conference. Conference Record

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The reliability of emergency power systems has improved steadily since the earliest installations. The generator set, and its maintenance, will probably always be the most critical part of the system, but the application of the set and the rest of the system often prevents it from supplying power. This paper will concentrate on the integrity of the system. Part I1 illustrates some actual cases of early failure of the wiring and environmental damage to the generator set. Part 111 addresses some misunderstandings of generator set applications and Part IV reviews progress with strengthening code requirements.

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The Effects of Arcing Ground Faults on Low-Voltage System Design

Cited by 74 publications

References 6 publications

Frequency Spectrum Analysis of Electromagnetic Waves Radiated by Electric Discharges

Frequency Spectrum Analysis of Electromagnetic Waves Radiated by Electric Discharges

Evaluation of a new proposal for an arcing fault detection method based on wavelet packet analysis

Integrity of emergency systems [UPS]

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