Title :
Seismic behavior of `candle´ type SF6 outdoor circuit breakers and associated SF6 insulated current transformers
Author :
Thuries, E. ; Girodet, A. ; Serres, E. ; Mees, F. ; Willieme, J.M.
fDate :
10/1/1989 12:00:00 AM
Abstract :
The authors analyze the seismic behavior of live tank circuit breakers of the candle-type architecture, i.e. breakers that support only one chamber per column and have a closing resistor built in the interrupting chamber. This arrangement has a lower interrupting module weight and the resistor is in the axis of the column. In the case of T or V configurations with two chambers per column and with a closing resistor chamber in parallel to the main chamber, it results in some large masses off-centered on each side of the column. It is shown that the candle architecture makes possible a simple simulation and economical solution to the problem of seismic resistance, SF6 current transformers associated with these breakers are also modeled by a simple computational model
Keywords :
circuit breakers; current transformers; gaseous insulation; sulphur compounds; SF6; candle type breakers; closing resistor; insulated current transformers; interrupting chamber; live tank circuit breakers; outdoor circuit breakers; seismic behavior; seismic resistance; Circuit breakers; Damping; Earthquakes; Frequency; Gas insulation; Lightning; Power transformer insulation; Resists; Stress; Testing;
Journal_Title :
Power Delivery, IEEE Transactions on