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Always reliably informed with DEHNdetect

Lightning current measuring system prevents subsequent damage

Photo: GEKRU GmbH

Damage resulting from a lightning strike does not neces- Your benefits:
sarily lead to the immediate failure of the turbine. This • Prevention of subsequent damage
means that lightning events often remain undetected, es- • Reduction of maintenance / repair costs
pecially in the case of upward flashes where the initial long
stroke current flowing is only a few 100A and can be the • Reduction of downtime
main cause of damage, e.g., to the rotor blades. Contin-
ued operation of the turbine can lead to serious subse- The system can be integrated in the IT infrastructure of the
quent damage. Lightning current measuring systems are wind turbine via existing interfaces. The data can then sim-
often employed to detect lightning events and prevent ply be read out and managed using the available SCADA
subsequent damage. However, dangerous upward systems. If direct integration is not possible, the data can
flashes are not always fully detected due to the low cur- be transmitted to a cloud and evaluated via a web applica-
rent flow of the measuring system. As well as impulse tion. This makes it possible to monitor several turbines or
currents, DEHNdetect also reliably registers these danger- even entire wind parks.
ous long stroke currents, thus preventing expensive main-
tenance work and long downtimes. Invest in availability to secure the power supply of
your turbine, today and tomorrow.
DEHNdetect identifies the following parameters:
• Impulse current [kA]
• Long stroke current [A]
• Load [C]
• Specific energy [MJ/Ω]
• Rise time [kA/µs]

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