Experiences with medium-voltage vacuum circuit-breaker equipment in distribution systems

1981 ◽  
Vol 27 (10) ◽  
pp. 728
Author(s):  
R.W. Blower
Keyword(s):  
Distribution Systems ◽  
Circuit Breaker ◽  
Medium Voltage ◽  
Vacuum Circuit Breaker

Interruption of small, medium-voltage transformer current with a vacuum circuit breaker

2020 ◽  
Vol 187 ◽  
pp. 106502
Author(s):  
Alain Xemard ◽  
Bruno Jurisic ◽  
Michel Rioual ◽  
Arthur Olivier ◽  
Eric Sellin
Keyword(s):  
Circuit Breaker ◽  
Voltage Transformer ◽  
Medium Voltage ◽  
Vacuum Circuit Breaker

scholarly journals Simulation Analysis for Opening Performance of Medium Voltage Vacuum Circuit Breaker Based on ADAMS and Maxwell

2017 ◽  
Vol 95 ◽  
pp. 15007
Author(s):  
Xianliang Ding ◽  
Zhiming Wang ◽  
Qinlin Yin ◽  
Pengwei Chen ◽  
Shijin Zhou ◽  
...  
Keyword(s):  
Simulation Analysis ◽  
Circuit Breaker ◽  
Medium Voltage ◽  
Vacuum Circuit Breaker

scholarly journals Influence of Varying Gaps Between TMF Contacts on Constricted High Current Vacuum Arcs

2019 ◽  
Vol 6 (1) ◽  
pp. 103-106
Author(s):  
B. Kühn ◽  
B. Weber ◽  
D. Gentsch ◽  
M. Kurrat
Keyword(s):  
High Speed ◽  
Industrial Development ◽  
Circuit Breaker ◽  
Metal Vapor ◽  
High Speed Camera ◽  
High Current ◽  
Medium Voltage ◽  
Vacuum Circuit Breaker ◽  
Vacuum Test ◽  
Transversal Magnetic

The behavior of high current arcs in vacuum circuit breaker (VCB) is interesting for research and industrial development purpose which lead to further products. To improve the interruption capability of VCB, two approaches to control the arc have been proven successful. Applying transversal magnetic fields (TMF) on the arc is use for industrial VCB in medium voltage ranges. For greater gap distances the behavior of the arc is less thoroughly investigated. <br /> In this paper, the appearance of metal vapor arcs drawn by common TMF contacts in a vacuum-test-interrupter is investigated. An adapted drive mechanism enables to interrupt a fixed current with varying gaps from 5 to 25 mm and a constant opening time. Breaking operations with a 50 Hz current are observed with a high speed camera. With increasing gap distance a changed arc appearance can be observed. The goals of this work are to be understood as a feasibility study for optical evaluation methods for vacuum arcs under TMF.

A Hybrid DC Vacuum Circuit Breaker for Medium Voltage: Principle and First Measurements

2015 ◽  
Vol 30 (5) ◽  
pp. 2096-2101 ◽  
Author(s):  
Luhui Liu ◽  
Jinwu Zhuang ◽  
Chen Wang ◽  
Zhuangxian Jiang ◽  
Jin Wu ◽  
...  
Keyword(s):  
Circuit Breaker ◽  
Medium Voltage ◽  
Vacuum Circuit Breaker

scholarly journals Study on Transient Overvoltage of Offshore Wind Farm Considering Different Electrical Characteristics of Vacuum Circuit Breaker

2019 ◽  
Vol 7 (11) ◽  
pp. 415 ◽  
Author(s):  
Zikai Zhou ◽  
Yaxun Guo ◽  
Xiaofeng Jiang ◽  
Gang Liu ◽  
Wenhu Tang ◽  
...  
Keyword(s):  
Wind Farm ◽  
Circuit Breaker ◽  
Dielectric Strength ◽  
Offshore Wind ◽  
Offshore Wind Farm ◽  
Medium Voltage ◽  
Collector System ◽  
Vacuum Circuit Breaker ◽  
Experimental Parameters ◽  
Transient Overvoltage

For the study of transient overvoltage (TOV) in an offshore wind farm (OWF) collector system caused by switching off vacuum circuit breakers (VCBs), a simplified experimental platform of OWF medium-voltage (MV) cable collector system was established in this paper to conduct switching operation tests of VCB and obtain the characteristic parameters for VCB, especially dielectric strength parameters; also, the effectiveness of the VCB reignition model was verified. Then, PSCAD/EMTDC was used to construct the MV collector system of the OWF, and the effects of normal switching and fault switching on TOV amplitude, steepness, and the total number of reignition of the VCB were studied, respectively, with the experimental parameters and traditional parameters of dielectric strength of the VCB. The simulation results show that when the VCB is at the tower bottom, the overvoltage amplitude generated by the normal switching is the largest, which is 1.83 p.u., and the overvoltage steepness of the fault switching is the largest, up to 142 kV/μs. The overvoltage amplitude and steepness caused by switching off VCB at the tower bottom faultily with traditional parameters are about 2 and 1.5 times of the experimental parameters under the same operating condition.

Sign in / Sign up

Export Citation Format

Share Document