DocumentCode :
52955
Title :
Charge simulation based electric field analysis of composite insulators for HVDC lines
Author :
Jiahong He ; Gorur, Ravi
Author_Institution :
Sch. of Electr., Comput. & Energy Eng., Arizona State Univ., Tempe, AZ, USA
Volume :
21
Issue :
6
fYear :
2014
fDate :
Dec-14
Firstpage :
2541
Lastpage :
2548
Abstract :
This paper illustrates a charge simulation method based computation of electric potential and field of composite insulators for HVDC lines. The electric field is calculated under both dry and wet conditions and compared to AC line insulators. The results indicate that for the same nominal voltage, the electric field for DC lines is higher than for ac lines, thereby necessitating larger field control devices (corona and grading rings) for DC insulators. A process for optimizing corona and grading ring dimensions is described and applied for 500 kV HVDC lines.
Keywords :
HVDC power transmission; composite insulators; power overhead lines; AC line insulators; DC insulators; HVDC lines; charge simulation based electric field analysis; composite insulators; electric potential; larger field control devices; Computational modeling; Corona; Electric fields; Electric potential; Electrodes; HVDC transmission; Insulators; HVAC; HVDC; aging; charge simulation method; corona ring; grading ring; surface resistivity; wet surface;
fLanguage :
English
Journal_Title :
Dielectrics and Electrical Insulation, IEEE Transactions on
Publisher :
ieee
ISSN :
1070-9878
Type :
jour
DOI :
10.1109/TDEI.2014.004541
Filename :
7031503
Link To Document :
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