Title :
Research on the dielectric recovery of SF6 circuit breaker based on the flow field control
Author :
Shen, Yuzhuo ; Han, Lu ; Jin, Lijun ; Lu, Ganwen ; Mei, Jian ; Zhu, Hui
Author_Institution :
Dept. of Electr. Eng., Tongji Univ., Shanghai, China
Abstract :
The intelligent operation of circuit breaker can choose and adjust the fit prearranging work condition of the interrupter and/or operating mechanism automatically accordance with the opening message that is sent from power system, in order to improve the SF6 dielectric recovery strength. Under the conditions of breaking, the electric field and flow field of arc chamber have been calculated. Simulation shows that it has great effect of the opening velocity and the flow field distribution on the dielectric recovery. A new scheme of controlling the flow field by using the gas flow control ring is put forward. So that the dielectric recovery strength of SF6 circuit breaker becomes the controllable parameter in intelligent operation.
Keywords :
circuit breakers; circuit-breaking arcs; electric breakdown; electric strength; flow control; interrupters; SF6 circuit breaker; arc chamber flow field; dielectric recovery; flow field control; gas flow control ring; interrupter; Circuit breakers; Control systems; Dielectric materials; Differential equations; Energy conservation; Interrupters; Mechanical factors; Power system simulation; Stress; Sulfur hexafluoride; arc chamber; circuit breaker; flow field;
Conference_Titel :
Properties and Applications of Dielectric Materials, 2009. ICPADM 2009. IEEE 9th International Conference on the
Conference_Location :
Harbin
Print_ISBN :
978-1-4244-4367-3
Electronic_ISBN :
978-1-4244-4368-0
DOI :
10.1109/ICPADM.2009.5252480
