Xiaofei Yao
Xi'an Jiaotong University
74 Papers
105 Citations
Xiaofei Yao is an academic researcher from Xi'an Jiaotong University. The author has contributed to research in topics: Circuit breaker & Voltage. The author has an hindex of 5, co-authored 59 publications.
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Papers
Development and Type Test of a Single-Break 126-kV/40-kA–2500-A Vacuum Circuit Breaker
TL;DR: In this paper, a single-break vacuum circuit breaker (VCB) with a pair of 2/3 coil-type contacts is used to provide a closing velocity of 1.15 m/s, which is an average velocity for 4 mm before the moving contact mates with the stationary contact.
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Axial Magnetic Field Strength Needed for a 126-kV Single-Break Vacuum Circuit Breaker During Asymmetrical Current Switching
TL;DR: In this paper, the authors investigate how strong an axial magnetic field (AMF) is needed in test duty T100a for a 126-kV single-break vacuum circuit breaker (VCB) when interrupting a rated short circuit current of 40-kA rms in light of arcing contact gap, arc duration and phase shift effect.
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Vacuum switching technology for future of power systems
TL;DR: In this paper , a fast vacuum circuit breaker can interrupt a short-circuit current in the first half-cycle of a fault current, compared to the more common three cycles for existing current switching technologies.
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Experimental Investigation of the Prestrike Characteristics of a Double-Break Vacuum Circuit Breaker under DC Voltages
TL;DR: In this paper, a double-break VCB consisting of two commercial vacuum interrupters (VIs) in series under direct current (DC) voltages was investigated. And the experimental results showed that the 50% prestrike gap d50 of each VI in a double break, which was calculated with the complementary Weibull distribution, was significantly reduced by 25% to 72.7%.
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Optimizing the Opening Velocity for a Vacuum Circuit Breaker With Cup-Type Axial Magnetic Field Contacts
TL;DR: In this article, the authors extended the quantitative method of optimizing the opening velocities for a vacuum circuit breaker (VCB) with cup-type axial magnetic field (AMF) contacts.
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