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Partial discharge detection in ultra high frequency band (300 MHz to several GHz) is one of the effective methods for diagnosing the insulation condition of a gas insulated switchgear. This method which detect electromagnetic wave with high S/N ratio has been rapidly developed in recent years. We need to install an internal sensor or an external sensor on GIS tank in order to detect partial discharge...
Partial discharge detection is the most effective method to monitor and diagnose the insulation condition of high voltage apparatus. UHF method becomes more popular because of its higher S/N ratio. UHF sensors are the most important part of UHF method PD measurement. This paper deals with the PD measurement using several UHF sensors installed on 66 kV GIS model with needle protrusion on the conductor...
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