Corona discharge is the starting point of surface degradation processes. Corona can hit any medium/high voltage apparatus: transformers, bushings, capacitors, insulators, switchgear, conductors, cables, motors, spacers, switch cabinets, and more and affect reliability.
Material degradation due to corona discharge influences the electrical and mechanical performance of power grids. It has been proven that the presence of corona activity is one of the best indicators of defective NCIs. Moreover, corona can lead inspectors to the exact location of the fault so that corrective action can be taken, mainly if detected on time when faults can still be fixed.
Research conducted in the USA (Lawrence Berkeley National laboratory) estimated that power outages cost the U.S economy $80 billion annually. This figure calls for utilities to prevent service interruptions and concentrate on the reliability of their assets. Electric utilities strive to provide reliable services at reasonable costs. Ofil can help with that because corona detection is absolutely a reliability driven act that entails a reasonable investment cost. While both utilities and their customers benefit from the outcome of corona detection, the economic benefit attained outweighs the cost of our corona detection systems.