Since the wind turbine has a tall structure, it is more affected by lightning than others. We can distinguish several paths of lightning current to the wind turbine generator and to protect these systems might be the redirection of the discharge current into the earth through the grounding system is the solution. Even without the possibility of being struck by lightning, wind turbines contain sensitive electronic equipment. Is the electromagnetic field (E and B) generated during the current flow (in the down-conductor) can cause damage? if yes, how to solve this problem?
Lightening high voltage surge, could damage the winding insulation, which could be studied by, performing (1)Impulse and (2) High Voltage testing in HV Lab. Though lightening is HV impulse would not disturb the generator working field and control circuit much, could be shilded by metal box covering, though wire less communication field could be disturb by generated electromagnetic signals, ....
High voltage and high current tests of wind turbine blades are usually performed as type tests for assessing and ensuring their capabilities to withstand lightening surges. You will find numerous articles by searching the google scholar. For example,
https://www.research.manchester.ac.uk/portal/en/publications/high-current-and-high-voltage-testing-of-wind-turbine-blades-and-bearings(78048900-7b56-4c3d-8f74-3b11c6d207e2).html
sure, it is very critical because lightning can cause one of the most significant damage to the wind turbines. Damage claims engendred by strikes are one of the top payouts from insurance companies .So that's prove the importance of a proper and efficient lighting protection systems.
Generally the tollest structures more venerable to direct and indirect lightening stroke, hence should be protected by earthing rod on top of pole ...
- Badges
- Science topic
- Similar topics
- Force