Abstract:
High Voltage insulators are vital components in transmission and distribution systems in a
power network. Most of the insulators are used in open air applications where they are
subjected to different environment conditions. Exposure to these different weather conditions
and contaminations determine their performance as insulators. Condition monitoring ot power
line insulators is an important requirement for asset management engineers in a power network
in order to maintain a healthy power system. There are several techniques that have been
introduced to fulfil this requirement. One ot the techniques ot measuring surface leakage
current is introduced here. This paper highlights the concepts of measuring surface leakage
current for insulators under contaminated conditions. Results show that the surface leakage
current is closely related to the insulator condition.
