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A new method based on bi-spectrum analysis was presented for insulator leakage current analysis. By discussing the bi-spectrum theory, the characteristics of icing insulator leakage current signal were analyzed. It obtained the contour value figure and the 3D figure from bi-spectrum. Results show that, with the development of insulator discharge, the quadratic phase coupling's scope is getting smaller...
Combining with optical fiber transmission technology and digital signal processing technique, a leakage current monitoring system suitable for iced insulators based on fiber optic transmission has been developed by making use of multiple channel and high precision data synchronous collecting cards and virtual instrument technology software programmed. The designs of the leakage current sensor and...
In the present paper, study on icing flashover characteristics were carried out in artificial climate chamber of State Grid Electric Power Research Institute (SGEPRI) with XWP2-160 porcelain double sheds suspension insulators. According to IEEE Task Force on insulator icing test methods the natural freezing rain condition was simulated and 3 to 7 units XWP2-160 insulators were icing energized at service...
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