Lightning Management Systems for Photovoltaic Power Plants

Wind farms or wind turbines are elevated structures highly exposed to natural phenomena such as wind and electrical storms. Due to their structural characteristics and the locations where they are installed, wind turbines are at high risk of direct lightning strikes, particularly to their blades.

The occurrence of lightning strikes on wind turbine blades can cause mechanical damage to their structures. A blade with a damaged structure seriously compromises the integrity of the wind turbine, potentially even causing its collapse if measures are not taken in time.

Current regulations recommend the installation of lightning strike detection devices as well as the carrying out of inspections and preventive maintenance following the occurrence of a lightning strike on wind turbines.

Maintenance and inspections of wind turbines are highly costly procedures.

The use of the DL EOLOS K15FO counter makes it possible to significantly reduce maintenance costs, as it allows precise identification of which blade has been struck by lightning.

The high sensitivity of this product enables the recording and reporting of various types of lightning strikes that are not detectable by other lightning counters on the market.

DL EOLOS K15FO

Optimized lightning strike counter for wind turbine blades.

  • High capacity (999 impulses)
  • Permanently visible record of detected events
  • Impulse detection with a minimum intensity of 0.18 kA across a wide range of impulse waveforms, including typical surges generated in wind turbines as described in standard IEC 61.400-24.
  • Direct attachment using adhesive to the wind turbine blade, with no additional drilling required.
  • No batteries or external power supply required (maintenance-free).
  • Detection without ohmic contact: does not affect the condition of the conductor.
  • Excellent durability. IP65 protection rating.

    DL EOLOS FO-RCVR-3CH

    Optical receiver for the DL EOLOS K15FO lightning strike counter.

    • Three input channels, each with an individually associated output.
    • Galvanically isolated individual outputs.
    • High resistance to external electromagnetic interference.
    • Standardized power consumption.
    • Use of high vibration-resistant connectors.
    • Direct mounting on standard DIN35 rail.
    • Activity and status light indicator.
    • Operating temperature from -20ºC to +60ºC.

    Installation

    Installation

    The installation of lightning strike counters on the down conductors of lightning protection systems is specified in standards UNE 21.186, NFC 17.102 and IEC 62.305, to allow immediate inspection and verification of the protection installation status after each lightning strike.

    “The lightning protection system must be verified after each lightning strike recorded on the structure.”

    The DL EOLOS K15FO lightning strike counter has been designed according to the performance requirements of standard IEC 62.561/6:2012 and complies with the specifications of standard IEC 62.561/1:2012, with the exception of the minimum counting current value, which has been reduced in order to detect specific types of lightning that affect wind turbines (according to standard IEC 61.400-24).

    Tests carried out at LABELEC, Electrotechnical Testing Laboratory, accredited by ENAC (Accreditation No. 307/LE681)