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| Influences of Wind Farm on VHF Radar System |
| Received:March 15, 2017 Revised:July 15, 2017 |
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| DOI：10.7643/ issn.1672-9242.2017.07.008 |
| KeyWord:wind farm VHF radar electromagnetic interference scattering shading |
| Author | Institution |
| ZHANG Lian-ying |
China Research Institute of Radiowave Propagation, Qingdao , China |
| WANG Ju-jie |
China Research Institute of Radiowave Propagation, Qingdao , China |
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| Abstract: |
| Objective To study influences of wind farm on VHF radar system, including electromagnetic interference, scattering and shading based on potential threads of wind farm on VHF radar system to provide technical guidelines for evaluating influences of wind farm on HVF radar system. Methods Electromagnetic interference of the wind farm ware tested according to the working principle and the structure of wind power generator. Influences of the wind farm on background noise surrounding the VHF radar system were analyzed to propose solutions of electromagnetic interference; theories of scattering, knife-edge diffraction, Doppler effect, etc, were used to have simulating calculation and analysis on influences of passive scattering, shading, etc. on the VHF system. Results The wind farm will cause decline of radar’s technical index, including worsening of radio noise, increasing of false alarm rate and reducing of detecting distance. Conclusion The wind farm has great threat to the radar system. To protect economic construction and VHF radar system’s performance, rigorous evaluation of wind farm’s influence is necessary before programming and building. |
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