Title :
Study of ultra-high-speed power switching-off of SSCB for coal mine low-voltage system
Author :
Yan Gao ; Yan-wen Wang ; Feng-lin Ma
Author_Institution :
Mech. & Electr. Inf. Eng. Inst., China Univ. of Min. & Technol., Beijing, China
Abstract :
This paper analyses the reality of traditional three phase AC contactless switch, and points out the inherence break time is over 10ms. It puts forward using IGBT as the main component of solid state circuit breaker for the transformer neutral point´s contactless switch. This enables that the operating time of ultra-high-speed short circuit protection is less than 1ms. In addition, this paper has proposed a transient mathematical model for a turning-off process of transformer neutral point SSCB. The total switching-off time has been obtained by theoretical analysis and validated by tests.
Keywords :
circuit breakers; coal; insulated gate bipolar transistors; mining; power system protection; IGBT; SSCB; coal mine low-voltage system; inherence break time; solid state circuit breaker; three phase AC contactless switch; transformer neutral point contactless switch; turning-off process; ultra-high-speed power switching-off; ultra-high-speed short circuit protection; Circuit breakers; Educational institutions; Equations; Insulated gate bipolar transistors; Mathematical model; Switches; Switching circuits; IGBT; SSCB; solid state circuit breaker; ultra-high-speed interruption;
Conference_Titel :
Power Engineering and Automation Conference (PEAM), 2011 IEEE
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-9691-4
DOI :
10.1109/PEAM.2011.6135109
