The cleaning effect of heavy rain (the rainfall reaches 5 mm every day) on surface contamination of insulators is more effective than dew, fog, mist, and other light rain conditions which can initiate leakage currents and increase the likelihood of flashover. It is well understood that heavy rain can wash away contamination from the surface of high voltage (HV) insulators and thereby reduce the...

Abstract Epoxy resin is used as insulating material in electrical equipment due to its perfect electrical, mechanical and thermal properties. The accumulation of charge on the surface promotion flashover, however, often lead insulation failure directly endanger operation safety. Therefore, improving performance epoxy materials great significance for protecting high-voltage power equipment. In t...

Electric flashover on power system apparatus and safety equipment can result in destruction to equipment and injury to workers, as well as pose a danger to anyone in the vicinity of this occurring. This phenomenon still continues to be an issue today despite over 100 years of research into the problem. It was determined that an exhaustive literature review should be performed to investigate mat...

This paper presents a hybrid Artificial Neural Network (ANN) model that is developed for noisy data classification. The model, named GRNNFA, is a fusion of the Fuzzy Adaptive Resonance Theory (FA) model and the General Regression Neural Network (GRNN) model. The GRNNFA model not only retains the important features of the parent models, which include stable learning, fast training, and an increm...

This paper presents a novel Monte-Carlo based model for the analysis of backflashover rate (BFOR) on high voltage transmission lines. The proposed model aims to take into the account following aspects of the BFOR phenomenon: transmission line (TL) route keraunic level(s), statistical depiction of lightningcurrent parameters (including statistical correlation), electrogeometric model of lightnin...

0957-4174/$ see front matter Crown Copyright 2 doi:10.1016/j.eswa.2008.11.008 * Corresponding author. Tel.: +90 424 2370000/523 E-mail addresses: [email protected] (M.T. Ge (M. Cebeci). High voltage insulators form an essential part of the high voltage electric power transmission systems. Any failure in the satisfactory performance of high voltage insulators will result in considerable lo...

voltage and of tbc cbange of coupling factor among tbe linc conductors and tbe ground at tbe location where f1ashov~ 0CC1D'. In Section 3, we shall compare om metbod with tbe ODe proposed by tbe IEEE Guide Std 1410 [2] for tbe ~ purpose. Tben in Section 4, we sball perfonn a first assesSJnent of tbe lightning perfonnance of a typical Italian distn"bution linc. Section 5 is devoted to tbc conclu...