%0 Electronic Article
%A Ai Shaogui
%A Yu Xiao
%A Huang Yongning
%A Yang Fan
%A Fan Yiping
%A Li Xing
%K distributed capacitance parameters
%K fast multibreak vacuum circuit breaker
%K stray capacitor analysis
%K three series connected platforms
%K high-voltage power system
%K SF6 circuit breaker
%K PSCAD model
%K vacuum interrupter modules
%K three-dimensional finite-element model
%K equivalent capacitance model
%K current single-break VCB
%K fast multibreak VCB design
%K capacitance 10.0 nF
%K voltage distribution characteristics
%K modularised hexa-break VCB
%K voltage 363.0 kV
%X Vacuum circuit breaker (VCB) has a longer life and shorter opening time than SF6 circuit breaker, but current single-break VCB cannot be applied in high-voltage power system directly. Here, a fast 363 kV multi-break VCB design is presented and its voltage distribution characteristic and stray capacitors are analysed. A three-dimensional finite-element model of modularised hexa-break VCB composed of 12 vacuum interrupter modules installed on three series connected platforms is developed to calculate the voltage distribution and distributed capacitances. The result shows that the voltage distribution is uneven, and the first break shares the 67.974% of the whole applied voltage. On account of distributed capacitances parameters, an equivalent capacitance model with PSCAD is built to discuss the voltage distribution characteristic at different grading capacitance values, and the optimal grading capacitance value is determined to 10 nF.
%T Study on voltage distribution characteristic of a 363 kV fast multi-break vacuum circuit breaker
%B The Journal of Engineering
%D October 2018
%I Institution of Engineering and Technology
%U https://digital-library.theiet.org/;jsessionid=3hf457knmkl37.x-iet-live-01content/journals/10.1049/joe.2018.8648
%G EN