Title :
Evaluation of the failure probability for gapless metal oxide arresters
Author :
García-gracia, M. ; Baldovinos, S. ; Sanz, M. ; Montanes, L.
Author_Institution :
Dept. de Ingenieria Electr., Zaragoza Univ., Spain
Abstract :
The energy absorption of surge arresters on power systems due to lightning strokes is evaluated using the Electromagnetic Transients Program (EMTP). On the basis of this study, a selection criteria is given in order to determinate the optimal arrester for a location. The improvement is applied to a practical example. The analysis shows that the failure probability of an arrester depends on its energy capability, the rated voltage and the power system configuration. The discharge energy and the critical current producing damage in the arrester are calculated, which permit the failure probability to be determined
Keywords :
EMTP; arresters; failure analysis; power system analysis computing; power system protection; probability; reliability; EMTP; computer simulation; critical current; discharge energy; energy absorption; energy capability; failure probability evaluation; gapless metal oxide arresters; lightning strokes; power system configuration; rated voltage; Arresters; EMTP; Electromagnetic wave absorption; Failure analysis; Fault location; Lightning; Power system analysis computing; Power system transients; Surges; Voltage;
Conference_Titel :
Transmission and Distribution Conference, 1999 IEEE
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-5515-6
DOI :
10.1109/TDC.1999.756136