Wind Power

Wind turbines are usually installed in the windy open sea, hills or ridges, the height of the location of the fan and open terrain, resulting in the number of lightning strikes on the fan is much higher than the average local lightning strike under the average ground flash density.

Wind turbines are integrated with a large number of sensitive electronic and electrical components, if suffered a lightning strike (especially blades and generator valuable components suffered a lightning strike), in addition to the loss of electricity revenue during the restoration period, but also to bear the huge cost of dismantling and repairing the damaged components, so the prevention of lightning hazards is to ensure that the wind turbine is the primary issue of safe operation.

Risks of lightning strikes and surge voltages to wind power systems:

1. lightning strikes directly hitting locations such as wind turbine blades or nacelles

2. upward leading from locations such as wind turbine blades

3. surge overvoltages generated by lightning induction (e.g. Lightning Electromagnetic Pulse LEMP formed by non-directed lightning strikes), which can lead to permanent failure of the wind turbine’s electrical and electronic systems.

EYZAO provides comprehensive and efficient lightning protection solutions for wind power generation. According to the IEC 62305 series of standards and the IEC 61400-24 requirements for the protection of each special part of the wind turbine, to determine the installation and selection of SPDs for wind power generation systems, it is necessary to consider:

1. the lightning protection zone (LPZ0…3);

2. the test current waveform (8/20μs waveform and 10/350μs waveform) that the SPD complies with;

3. voltage protection level (Up value of SPD);

4. supply system voltage and type (230/400 V and 400/690 V systems, TN and TT, etc.); 5. harmonic interference resistance, etc;

5. resistance to harmonic interference, etc.