Title :
Modal analysis utilization with a view of high voltage switching equipment assessment after seism or short-circuit events
Author :
Manea, I. ; Nestor, M. ; Tanase, O.
Author_Institution :
INCDE-ICEMENERG, Craiova, Romania
Abstract :
The paper presents two techniques for assessment of switching equipment technical state after seism or short-circuit events: modal analysis for assessment of resistance structure and off-line techniques by contact resistance, kinetic characteristics and vibrations, for assessment of equipment current carrying ability. This techniques can with success be applied on the network equipment. There are presented experiments carried out on the SF6 circuit breakers of 420 kV / 2500 A and of 170 kV / 2500 A.
Keywords :
circuit breakers; contact resistance; modal analysis; power system reliability; short-circuit currents; switching; vibrations; 170 kV; 2500 A; 420 kV; SF6 circuit breakers; contact resistance; high voltage switching equipment assessment; kinetic characteristics; modal analysis utilization; short-circuit events; switching equipment technical state; vibrations; Circuit breakers; Circuit testing; Contact resistance; Frequency; Modal analysis; Stress; Sulfur hexafluoride; Thermal resistance; Vibrations; Voltage;
Conference_Titel :
Power Tech Conference Proceedings, 2003 IEEE Bologna
Print_ISBN :
0-7803-7967-5
DOI :
10.1109/PTC.2003.1304146
