Title :
A statistical study for switching over-voltages and risk of failure evaluation in Kuwait EHV network
Author :
Abbasy, N.H. ; Al-Hasawi, W.M.
Author_Institution :
Dept. of Electr. Eng., Coll. of Technol. Studies, Kuwait
Abstract :
In this paper, a statistical study of the switching overvoltages (SOVs) of Kuwait EHV (275 kV) is presented. The statistical simulations include different types of faults (L-G, LL-G, 3L-G, L-L), line energization and successful line reclosure. The EMTP program is used to simulate the network for this study. The probability distributions for both system overvoltages and insulation breakdown are deduced. The objective is to determine the risk of system insulation failure at the critical spots of the system, and accordingly, to assess the system insulators which are currently in use. Surge arresters are introduced in the network in order to assess their effect in reducing the risk of failure of the insulation.
Keywords :
EMTP; electric breakdown; insulation; insulators; overvoltage; power system analysis computing; power system faults; probability; switching transients; 275 kV; EHV power network; EMTP program; Kuwait; failure risk evaluation; insulation breakdown; insulation failure; insulators; probability distributions; statistical study; switching overvoltages; Breakdown voltage; Circuit faults; Computational modeling; EMTP; Electric breakdown; Insulation; Intelligent networks; Probability; Statistical analysis; Surges;
Conference_Titel :
Electric Power Engineering, 1999. PowerTech Budapest 99. International Conference on
Conference_Location :
Budapest, Hungary
Print_ISBN :
0-7803-5836-8
DOI :
10.1109/PTC.1999.826572
