Corona Camera

A Corona camera shows the corona discharge caused by damaged insulation materials protecting for example high voltage switches or wires. Corona is the cause of high energy losses of up to 200 kW per kilometer of high voltage wiring. Failure of insulation materials can lead to discharge failures causing damage to the implant, a break down of the power supply and possibly even fires and explosions. Drone inspections with a Corona cameras can be done without shutting down the power line, which has considerable advantages in terms of costs, risk and time compared to inspections performed by people.

How does it work?
A corona camera  shows the UV light generated when nitrogen comes into contact with a power leak. As "normal" ultra violet light is filtered out, corona can be visualised even in broad daylight. During the measurements a normal video image and the UV source are shown simultaneously, making it easy to locate the corona accurately.