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One of the main reasons for using nonceramic insulators in polluted regions is the reduction of maintenance needed to keep a line in service. Because the useful lifetime of these insulators depends largely on the pollution conditions, it is advisable to inspect the insulators on a regular cycle. The article discusses several diagnostic techniques that can be applied to detect risky conditions before...
In Mexico since 1995, polymeric insulators have been used in transmission lines exposed to severe contamination. Insulators from different manufacturers have been installed; however, some of them have failed during their early operation years. Consequently, since 2003, in-service diagnostic has been periodically carried out to identify high risk insulators, by using the visual corona and electric...
The paper presents the results obtained from the laboratory tests carried out to evaluate the visual corona and electric field measurement techniques for inspecting polymeric insulators on live lines. The evaluations were performed on different 115 kV polymeric insulators aged in a salt fog chamber. The results show that both large and small defects near the hot electrode can be detected by the visual...
The integration of four artificial intelligence tools that combine the ID3 algorithm and the case-based reasoning method of the nearest neighbor are proposed to solve the problem of characterizing the flashover on high-voltage insulators. The first tool uses data mining to build a classification or decision tree from historic data, the second, generates production rules, the third, operates the decision...
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