Experimental study on the influence of vent aperture size and distribution on arc motion and interruption in low-voltage switching devices

Shin, Dong-Joon; Golosnoy, Igor O.; Bull, Thomas; McBride, J.W.

doi:10.1109/icepe-st.2017.8188830

Cited by 8 publications

(4 citation statements)

References 5 publications

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“…The magnetic conductance plates and magnetic connections are made of steel with a permeability of • -6000 N m . 2 In the model, there is a circular air outlet whose diameter is 20 mm on both sides of the arc runner [36,37]. Figure 1(b) is a simplified model of the middle cross-sectional view of the arc chamber, and the splitter plates and arc runner are made of copper.…”

Section: Geometric Modelmentioning

confidence: 99%

Research on arc root stagnation when small current is interrupted in self-excited circuit breaker

Peng¹,

Li²,

Cao³

et al. 2022

Plasma Sci. Technol.

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Self-excited DC air circuit breaker(SE-DCCB) has been widely used in urban rail transit for its excellent stability. It can realize forward and reverse interrupting, but has difficulty in interrupting small current due to the phenomenon of arc root sticking at the entrance of the arc chamber in the splitting process which is known as arc root stagnation. A coupling model of self-excited magnetic field and magnetohydrodynamics (MHD) is established for the SE-DCCB with the traditional structure. The magnetic field, temperature and airflow distribution in the arc chamber are investigated with interrupting current 150 A. The simulation results show that the direction and magnitude of magnetic blowout force are the dominant factors of the arc root stagnation. The local high temperature of the arc chamber due to arc root stagnation increases the obstruction effect of airflow vortex on the arc root movement which increases the arc duration time of small current interrupting seriously. Based on the research, the structure of magnetic conductance plate of the actual product is improved which can improve the direction and magnitude of the magnetic blowout force at the arc root, so as to restrain the development of airflow vortex effectively, and solve the problem of the arc root stagnation when small current is interrupted. The simulation results show that the circuit breaker with improved structure has a better performance for small current interrupting range from 100 A to 350 A.

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Section: Geometric Modelmentioning

confidence: 99%

Research on arc root stagnation when small current is interrupted in self-excited circuit breaker

Peng¹,

Li²,

Cao³

et al. 2022

Plasma Sci. Technol.

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“…Similarly, Yu et al observed the arc velocity is enhanced by increasing the vent size and chamber width in the simplified quenching chamber [7]. Shin et al carried out an experimental study on the influence of vent aperture size and distribution on arc motion and interruption performance in LVSDs [8]. They concluded that the arc moves further and more quickly where the vents are larger.…”

Section: Introductionmentioning

confidence: 97%

“…Previous empirical investigations have been carried out to study arc motion and its influence on current limitation [3] - [8], re-ignition in an attempt to improve the switching performance [2], [9], [10], or arc splitting process by the splitter plates in the quenching chamber of the LVSD [11]. McBride et al investigated the influence of several parameters on arc motion (the duration the arc root remains in the contact region) in miniature circuit breakers (MCBs) by recording arc motion through the arc imaging system (AIS) [3] - [5].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of Arc Motion Near Splitter Plates in Low-Voltage Switching Devices

Shin

Bull

McBride

2021

IEEE Trans. Compon., Packag. Manufact. Technol.

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Switching performance of a low voltage switching device (LVSD) is determined by limiting current and stopping re-ignition. This is strongly influenced by how the arc moves inside the LVSD quenching chamber during the switching process. Improved switching performance is achieved when the arc quickly enters and stays inside the splitter plates of the LVSD, with the arc attached to the surface of the plates.This paper studies arc motion around splitter plates in LVSDs and the correlation with arc voltage. Arc motion is investigated using a high-speed optical arc imaging system (AIS). It is observed that the arc fluctuates as it enters the splitter plates, with periods inside the plates followed by sudden re-strikes of the arc roots outside the plates. The AIS system allows the measurement of arc displacement and a correlation with the arc voltage. The results show two phases, with a narrow correlation while the arc in the chamber out of the splitter plates and a distributed correlation while in the splitter plates. Further a new performance parameter the splitter time (ST) ratio is defined. The influence of the ST ratio on the chamber vent design is investigated. It is found that with wider and well distributed vent apertures the ST ratio is higher than with a closed vent, and arc motion on entry to the plates is improved.

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“…The vent aperture plays an important role on the arc motion and splitter plates lead to increase the voltage drop. The study from Shin et al [3] is devoted to the influence of vent aperture size and repartition on arc motion by arc imaging acquisitions. It is shown that the arc moves further and more quickly in case of larger area of vent opening in the quenching chamber.…”

Section: Introductionmentioning

confidence: 99%

Experimental Studies of Arc Motion Between Two Parallel Runners with Splitter Plates

Gonzalez

Freton

et al. 2020

PPT

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In this paper, we present an experimental study in a simpliﬁed arc chamber geometry of Low-Voltage Circuit Breaker (LVCB). The inﬂuence of vent aperture on arc motion and the inﬂuence of splitter plates on arc voltage drop and arc motion are studied. The arc chamber is composed by two parallel arc runners and following the conﬁguration chosen by one or two splitter plates. The experimental setup is completed by a generator (capacitor bench with triggered switch), a high-speed camera and electrical measurements. The arc ignition, arc displacement, arc splitting and arc re-strike have been observed. The results will be described and discussed for diﬀerent experimental conﬁgurations.

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Experimental study on the influence of vent aperture size and distribution on arc motion and interruption in low-voltage switching devices

Cited by 8 publications

References 5 publications

Research on arc root stagnation when small current is interrupted in self-excited circuit breaker

Research on arc root stagnation when small current is interrupted in self-excited circuit breaker

Experimental Study of Arc Motion Near Splitter Plates in Low-Voltage Switching Devices

Experimental Studies of Arc Motion Between Two Parallel Runners with Splitter Plates

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