Guided By:Prof. V. M. Patil

Present By:Borase Devendra Borase

Department of Mechanical EngineeringR. C. Patel Institute of Technology,Shirpur

wind turbine

WIND TURBINE :- A wind turbine is a device that converts the wind’s kinetic energy into electrical power.

TYPES OF WIND TURBINE. 1)Horizontal wind turbine: , the axis of blade

rotation is parallel to the wind flow. 2)Vertical wind turbine: Although vertical axis wind

turbines have existed for centuries, they are not as common as their horizontal counterparts.

LIGHTNING

Lightning is a sudden electrostatic discharge that occurs during an electrical storm.

Effects of lightning. 1)Direct effects 2)Indirect effects

METHODS FOR WIND TYRBINE LIGHTNING PROTECTION

METHODS FOR WIND TURBINE LIGHTNING PROTECION

Receptor attachment: The placement of receptors on structures, such as wind turbine blades, is performed using statistical models. A risk management approach is required to determine the receptor number and placement to provide optimum protection.

The design of the receptor itself also influences its ability to capture the lightning.

METHODS FOR WIND TURBINE LIGHTNING PROTECION

METHODS FOR WIND TURBINE LIGHTNING PROTECION

Critical elements of blade lightning system Conductor Technology :

the conductors must maintain the following characteristics:

1) Low inductance per unit length. 2) Low surge impedance Current-carrying capability

to withstand, without degradation, the thermal and mechanical effects of lightning.

3) Resistance to environmental effects.

ADVANTAGES

Renewable energy Pollution free Cost effective Does not use water No fuel charges

DISADVANTAGES

Causes death to wildlife, such as birds and bats Wind turbine cannot build anywhere Generate noise, some people does not like Wind is not always predictable

CONCLUSION

Wind turbine blade is one of the most vulnerable parts of the damage of lightning. On the basis of a large number of research data, this report analyzes the mechanism of the damage caused by lightning strike, sums up several lightning protection measures of the blades of the wind turbine and introduces one invention patent. At the same time, the author introduces a simulated experiment about the blade struck by lightning in Japan. It shows that the installation of lightning arrester can effectively intercept lightning in the blade tip. Also, if the lightning arrester is roughly the shape of a disk which installed on the surface of the blade, it will engender electric arc inside.