DocumentCode :
684229
Title :
The influence of DC electrical field on composite insulators icing and leakage current characteristics
Author :
Li-chun Shu ; Zhi Wu ; Yanzhun He ; Wei Yuan ; Qin Hu
Author_Institution :
State Key Lab. of Power Transm. Equip. & Syst. Security & New Technol., Chongqing Univ., Chongqing, China
fYear :
2013
fDate :
20-23 Oct. 2013
Firstpage :
16
Lastpage :
19
Abstract :
In recent years, domestic and foreign scholars did many researches on AC charged icing, but few about DC charged icing and the performance of Leakage current. this paper makes an artificial simulation Icing experiment about FXBW-35/70 composite insulators in artificial climate laboratory. The DC experiment was conducted at plus-minus voltage of 0kV, 10kV, 20kV and 30kV separately. Relative analysis was made to explore the ice and leakage current characteristics of insulator. The influence of voltage polarity was analyzed and the mechanism was explained. The results show: DC electric field has a significant impact on Insulator Icing and Leakage current; The amplitude of leakage current with DC electric field is proportional to the test voltage, as the voltage level arises, the degree of roughness of the insulator sheds ice improve continuously; the greater the icicle bends towards insulator core rod, the smaller the ice density, while the change of ice weight has a trend of first increasing and then decreasing. we can get that the positive and negative polarity has a impact on the density of sleet on insulators. The influence of positive polarity and negative polarity is different, and the trend of weight changing on negative polarity is bigger.
Keywords :
composite insulators; electric fields; ice; leakage currents; AC charged icing; DC charged icing; DC electrical field; FXBW-35/70 composite insulators; artificial simulation icing experiment; composite insulator icing; ice density; insulator core rod; insulator shed ice roughness; leakage current characteristics; negative polarity; positive polarity; test voltage; voltage 0 kV; voltage 10 kV; voltage 20 kV; voltage 30 kV; voltage polarity; Electric fields; Ice; Insulators; Leakage currents; Market research; Meteorology; Power transmission lines;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Electrical Insulation and Dielectric Phenomena (CEIDP), 2013 IEEE Conference on
Conference_Location :
Shenzhen
Type :
conf
DOI :
10.1109/CEIDP.2013.6748318
Filename :
6748318
Link To Document :
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