Influence of the AMF Arc Control on Voltage Distribution of Double-Break VCBs

Liao, Minfu; Ge, Guowei; Duan, Xiongying; Huang, Jinqiang; Huang, Z. Rena; Zou, Jiyan

doi:10.1109/tps.2016.2603532

Cited by 17 publications

(6 citation statements)

References 19 publications

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“…There are oscillations in the waveform of the PAC while the result of the paper in figure 11 is smooth with little noise. In our previous papers [1,22,25], the result of PAC is shown in figure 14. The initial result of PAC is oscillating and inaccurate because the time Δt 2 is less than the PAC results with ETMF.…”

Section: Comparison With Previous Results Of Pacmentioning

confidence: 94%

“…In our previous works, the PACME is based on the vacuum arc commutation between the VCB and the shunt resistor. The vacuum arc should be extinguished just before the cur rent zero of the main current and then the main current flow through the shunt resistor which is measured by a high precision current sensor with lower measurement range [1,14,22,25]. However, the vacuum arc commutation may fail without additional methods to improve it.…”

Section: A Novel Post-arc Current Measuring Equipment Based On Vacuum...mentioning

confidence: 99%

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A novel post-arc current measuring equipment based on vacuum arc commutation and arc blow

Liao

Duan

et al. 2017

Meas. Sci. Technol.

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The paper proposes a novel post-arc current measuring equipment (NPACME), which is based on the vacuum arc commutation and magnetic arc blow. The NPACME is composed of the vacuum circuit breaker (VCB), shunt resistor, protective gap, high-precision current sensor and externally applied transverse magnetic field (ETMF). The prototype of the NPACME is designed and controlled by optical fiber communications. The vacuum arc commutation between the vacuum arc and the shunt resistor with ETMF is investigated. The test platform is established in the synthetic short-circuit test and the vacuum arc is observed by the high speed CMOS camera. The mathematic description of the vacuum arc commutation is obtained. Based on the current commutation characteristic, the parameters of the NPACME are optimized and the post-arc current is measured. The measuring result of the post-arc current is accurate with small interference and the post-arc charge is obtained. The experimental results verify that the NPACME is correct and accurate, which can be used to measure the post-arc characteristic in breaking test.

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Section: Comparison With Previous Results Of Pacmentioning

confidence: 94%

Section: A Novel Post-arc Current Measuring Equipment Based On Vacuum...mentioning

confidence: 99%

A novel post-arc current measuring equipment based on vacuum arc commutation and arc blow

Liao

Duan

et al. 2017

Meas. Sci. Technol.

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“…The arc trigger period is varied from 1.00 to 2.24 ms. During this period, the pulse voltage punctures a small gap between the trigger pin and the cathode, and then a small initial plasma is generated. The initial plasma diffuses into the main gap and the cathode emission spots are produced at the same time . The column arc forms at 2.24 ms, which develops afterwards until the arc transforms into a diffuse mode at 9.20 ms.…”

Section: Test Results and Analysismentioning

confidence: 99%

Influence of bias magnetic field on the vacuum arc in double‐break vacuum circuit breakers

Liao

Qiao

Lü

et al. 2018

Contributions to Plasma Physics

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When double-break vacuum circuit breakers (VCBs) interrupt the fault current, the series arc will generate their individual magnetic fields in different breaks. The magnetic field in one break will influence the arc in another break if the magnetic field is strong enough or the two breaks are very close. In this case, an interactive magnetic field effect happens. This field is also called the bias magnetic field (BMF). BMF can cause anode erosion and affect the performance at current zero. The distribution of BMF and the optimal configuration of the double-break VCBs were obtained by the electromagnetic field simulation using the Ansoft Maxwell software. Based on the simulated magnetic field data, in the experiments, the interaction between the series vacuum arcs in double-break VCBs was equivalent to the interaction between a single vacuum arc and the magnetic field generated by a Helmholtz coil. A high-speed CMOS camera was used to record the trajectory of the vacuum arc plasma under different BMFs with different types of contacts. The results show the BMF can increase the arc voltage, and the arc becomes unstable. When the BMF becomes stronger, the arc voltage increases, and the arc becomes more unstable. In addition, for different types of contacts, the development process of the arc and the influence level are different under the same BMF. For a Wan-type transverse magnetic field (TMF) contact or strong BMF, metal sputtering is evident and anode erosion becomes serious. For a cup-type axial magnetic field (AMF) contact, the influence of BMF on the series arc plasma in double-break VCBs is less than that of the Wan-type TMF contact. The results of this work may be helpful for the design of compact double-break VCBs.

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“…Axial magnetic field contacts weak the magnetic constriction of vacuum arc by an axial magnetic field. The vacuum arc is evenly distributed on the surface of the contact so that the arc voltage and the ablation of the contact can be reduced [6][7][8][9]. Transverse magnetic field contacts drive the vacuum arc to move rapidly on the surface of the contact by a transverse magnetic field, thereby avoiding the erosion of the arc on the contact surface for a long time [10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Properties of intermediate-frequency vacuum arc in sinusoidal curved contact and butt contact

Tong

Jin

2019

Plasma Sci. Technol.

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In this report, two new contact structures of a vacuum interrupter with a sinusoidal curved surface are proposed to improve the capability by increasing the surface area. The experimental investigation of vacuum arc at intermediate frequency (360-800 Hz) was conducted and the results were compared with a butt contact with the same contact diameter (41 mm) and the same material. By analyzing the arc behavior, arc voltage characteristics, arc energy, current interrupting capacity, ablation of the anode contact and condensation of the arc products at a 3 mm gap, the differences in their vacuum arc characteristics were determined. The correlations of their arc energy with the amplitude and the frequency of the current were also achieved. Analysis suggests that the ruled curved contact has strong application potentiality because of its low arc energy, low arc voltage noise and arc voltage peak, light ablation on the surface of the anode contact and high interrupting capacity.

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Influence of the AMF Arc Control on Voltage Distribution of Double-Break VCBs

Cited by 17 publications

References 19 publications

A novel post-arc current measuring equipment based on vacuum arc commutation and arc blow

A novel post-arc current measuring equipment based on vacuum arc commutation and arc blow

Influence of bias magnetic field on the vacuum arc in double‐break vacuum circuit breakers

Properties of intermediate-frequency vacuum arc in sinusoidal curved contact and butt contact

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