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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Souza, A.L. da Silva Lopes, I.J. |
| Copyright Year | 2010 |
| Description | Author affiliation: Federal University of Minas Gerais (UFMG), Brazil (Souza, A.L.) || Federal University of Minas Gerais - Electrical Engineering Department, Belo Horizonte, MG - Brazil (da Silva Lopes, I.J.) |
| Abstract | In recent years, the concerns about premature failures of polymer insulators have been increasing. These failures, in part, can be attributed to the high electric field (E-field) magnitude at end fittings of these insulators, which may lead to partial discharges activity. The E-field values recommended by manufacturers and researchers, to avoid this phenomenon, are not fully consensual yet, particularly when considering the insulator under service conditions, because the E-field can be affected by several factors. This paper analyzes the E-field along polymer insulators through computational simulations using finite element method to model the insulator and water drops. In association with the simulations laboratory, experiments were performed, where the corona voltage inception was observed. The experiments were made to reproduce moisture conditions on the insulator surface. The results clearly show how certain service conditions may increase the E-field. |
| Starting Page | 759 |
| Ending Page | 764 |
| File Size | 764604 |
| Page Count | 6 |
| File Format | |
| ISBN | 9781457704888 |
| e-ISBN | 9781457704888 |
| DOI | 10.1109/TDC-LA.2010.5762969 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2010-11-08 |
| Publisher Place | Brazil |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Partial discharges Corona Onset Voltage Surface discharges Computational modeling Electric Field Insulators Corona Sensors Polymers Polymer Insulator |
| Content Type | Text |
| Resource Type | Article |
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