Multi-break arc interaction in the energy balance region

Smith, T.M.; Colclaser, R. G.

doi:10.1109/61.193971

Cited by 3 publications

(4 citation statements)

References 11 publications

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“…In order to interrupt current, arc that occurs when contacts are open must be extinguished . This is because if the arc is not cooled sufficiently, then transient recovery voltage applied from the system brings about reignition so that the arc ignites again . There is much research on appropriate countermeasures, and decrease in arc conductance at current zero point is reported to contribute to current interruption .…”

Section: Introductionmentioning

confidence: 99%

“…1 This is because if the arc is not cooled sufficiently, then transient recovery voltage applied from the system brings about reignition so that the arc ignites again. 2 There is much research on appropriate countermeasures, and decrease in arc conductance at current zero point is reported to contribute to current interruption. 3 However, current interruption is a physical phenomenon of the microsecond order when temperature distribution, fluid velocity distribution, and other conditions change abruptly; as a result, the process of decrease in air conductance is difficult to elucidate experimentally.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of electron and heavy particle velocity distribution under consideration of nonthermal equilibrium arc

Nemoto

Iwata

Maeda

et al. 2019

Elect Comm in Japan

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The circuit breaker is required to interrupt the current in order to prevent the spreading fault current. The reignition caused by the remaining high‐temperature gas in the opening of circuit breaker occurs. As this countermeasure, the external magnetic field application and blast gas to arc are used in order to decrease the arc temperature. It has been reported that the nonthermal equilibrium of arc is remarkable near the electrode and post arc. However, few reports have the analysis of separating electron and heavy particle momentums under consideration of the nonthermal equilibrium because the physical phenomena are complicated in the nonthermal equilibrium. In this paper, the electron and heavy particle velocity distribution under consideration of nonthermal equilibrium arc were analyzed. As a result, it is possible to quantify the electron and heavy particle velocity. The electron velocity distribution is dominant to the electric potential distribution. On the other hand, the heavy particle velocity distribution is dominant to the pressure gradient. Therefore, the difference between the electron and heavy particle velocity distribution was elucidated.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analysis of electron and heavy particle velocity distribution under consideration of nonthermal equilibrium arc

Nemoto

Iwata

Maeda

et al. 2019

Elect Comm in Japan

View full text Add to dashboard Cite

show abstract

“…Moreover, Tomita et al attempted to elucidate the causes of re‐ignition by measuring the electron number density using laser Thomson scattering . However, after the current reaches zero, the residual hot gas from the arc discharge causes thermal re‐ignition . Thermal re‐ignition is caused by arc conductance, which is dependent on temperature, and, as such, high‐speed temperature measurement of the arc discharge caused by the current cut‐off is required.…”

Section: Introductionmentioning

confidence: 99%

Arc temperature measurement with microsecond spectroscopic measurement

Kano

Nemoto

Maeda

et al. 2019

Electrical Engineering Japan

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The quality of electric power caused by frequency fluctuation and voltage rise will be degraded because of the lightning surge and the mass introduction of distributed power. Thus, it is necessary to improve the performance of gas circuit breaker in order to maintain the stable supply of electric power. It has been reported that the arc conductance is calculated as the index of the current interruption in numerical analysis. However, few report have the measured value in the current interruption. This is because that the current interruption is the steep phenomenon of micro seconds range. Thus, it is necessary to establish the time‐high precision and noncontact measurement method. In this paper, the arc temperature is measured near current zero using the microsecond spectroscopic measurement. As a result, the microsecond spectroscopic measurement which combines the conventional spectroscope and the high speed video camera is 200 times faster than the measurement of conventional spectroscope. For this reason, the microsecond spectroscopic measurement is possible with the high speed video camera. Therefore, it is possible to measure the arc temperature with decreasing the current using the microsecond spectroscope.

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“…9 However, after the current reaches zero, the residual hot gas from the arc discharge causes thermal re-ignition. 10,11 Thermal re-ignition is caused by arc conductance, which is Electr Eng Jpn. 2020;210:29-36. dependent on temperature, and, as such, high-speed temperature measurement of the arc discharge caused by the current cut-off is required.…”

Section: Introductionmentioning

confidence: 99%

Arc Temperature Measurement with Microsecond Spectroscopic Measurement

et al. 2019

View full text Add to dashboard Cite

The quality of electric power caused by frequency fluctuation and voltage rise will be degraded because of the lightning surge and the mass introduction of distributed power. Thus, it is necessary to improve the performance of gas circuit breaker in order to maintain the stable supply of electric power. It has been reported that the arc conductance is calculated as the index of the current interruption in numerical analysis. However, few report have the measured value in the current interruption. This is because that the current interruption is the steep phenomenon of micro seconds range. Thus, it is necessary to establish the time-high precision and noncontact measurement method. In this paper, the arc temperature is measured near current zero using the microsecond spectroscopic measurement. As a result, the microsecond spectroscopic measurement which combines the conventional spectroscope and the high speed video camera is 200 times faster than the measurement of conventional spectroscope. For this reason, the microsecond spectroscopic measurement is possible with the high speed video camera. Therefore, it is possible to measure the arc temperature with decreasing the current using the microsecond spectroscope. K E Y W O R D Sarc temperature, Boltzmann plot, GCB, microsecond spectroscopic measurement, spectrum

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Multi-break arc interaction in the energy balance region

Cited by 3 publications

References 11 publications

Analysis of electron and heavy particle velocity distribution under consideration of nonthermal equilibrium arc

Analysis of electron and heavy particle velocity distribution under consideration of nonthermal equilibrium arc

Arc temperature measurement with microsecond spectroscopic measurement

Arc Temperature Measurement with Microsecond Spectroscopic Measurement

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