SF6 gas is used as the insulating medium for AIS / GIS Substations for its superior dielectric strength property. Besides, SF6 is colourless, odourless, non-flammable, chemically inert in nature and highly stable. SF6 leakage is one of the most common problems for a power utility where a GIS or AIS circuit breaker is installed. The …
Studies show that over 85% of disruptive failures in high voltage (HV) and medium voltage (MV) equipment are Partial Discharge related. Partial Discharge (PD) activity provides evidence of deterioration in assets, which can propagate and increase, until the insulation is no longer able to withstand the electrical stress therefore leading to flash-over and finally equipment failure. Therefore, early detection …
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