Polytech - Model LKDS -Wind Turbine Lightning Protection Systems
Our Lightning Key Data System, LKDS®, is a unique wind turbine lightning measurement system that measures and records lightning events in real time. If you know in real time exactly where lightning strikes, then there is no need to stop for inspection. You either keep your blades spinning because there was no damage, or you stop them to fix what you now know needs to be fixed. You can therefore plan your service more efficiently and avoid unnecessary downtime. With LKDS®, you can detect early any emerging and incipient vulnerabilities on the blade or electronics, which may have fatal consequences for the turbine if not taken care of in time. The LKDS® is designed for natural integration into the harsh environment of the wind turbine hub and blade area. One sensor in each blade gives momentary measurements of the lightning behavior during a strike.
Our Lightning Card System is simple yet solid solution that monitor thousands of turbines across the globe. It is available for retrofit on your turbine.
The lightning card measures the lightning current in the conductor by registering the size of the magnetic field caused by the current. This is an irreversible process, and only a lightning strike with higher current can overwrite this measurement.
The card can be replaced and read either during routine replacement or if a lightning strike is suspected.
The solution comes with a lightning card reader and a software that allows you to read the measurements and generate pdf reports.
Lightning damage can happen due to a variety of reasons. But there are some frequent issues that can lead to failure.
Carbon too close to the tip
The increased use of carbon fiber in blades increases your lightning risks.
Other conductive components
Blades have a lot of different conductive component inside. These include sensors, de-icing systems, lights, and communication systems.
The LPS design must consider these and assess lightning damage mitigation through separation, insulation, or electrical bonding.
Only protecting the blade from lightning
Lightning current needs to travel through your entire turbine structure safely. Insufficient lightning protection in your hub, gearbox, nacelle, and tower can lead to flashover, causing lightning damage.