**4. Conclusions**

A three-dimensional model of wind turbine nacelle with internal cables is established in this paper. The induced voltage in cables and the magnetic field distribution in the nacelle are studied by using the transmission line matrix method. The influence of shielding mesh size and material on the attenuation effect again magnetic field in the nacelle is also analyzed. Based on the above analysis, following conclusions are drawn:


With above study conclusion, it is suggested to apply metallic mesh with a higher conductive metallic material and smaller side length on the nacelle in order to attenuate LEMP inside the nacelle, e.g., aluminum mesh with 2 cm side length is preferred.

**Author Contributions:** All the authors contributed equally to this research work.

**Funding:** This work was financially supported by Shanghai Science and Technology Project under gran<sup>t</sup> (16020501000).

**Conflicts of Interest:** The authors declare no conflict of interest. The funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript, or in the decision to publish the results.
