1 / 8

Seismic Vibration Analysis at Craig Wind Farm: Evaluation of Environmental Impact

This research report discusses the findings of a study conducted at Craig Wind Farm to evaluate the seismic ground vibration produced by wind turbines. Results show an overestimation by the 2005 Budget, with varying factors based on distance from Eskdalemuir. The study identifies the quietest sites and proposes a threshold for prospective headroom in turbine construction. The data correlates well with previous analyses, indicating the potential for further turbine development within safe limits.

ordell
Download Presentation

Seismic Vibration Analysis at Craig Wind Farm: Evaluation of Environmental Impact

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Results of initial research – Phase 0 Eskdalemuir Working Group 16th Aug 2013 Dr Mark-Paul Buckingham

  2. Introduction • Identification of quietest site at Craig Wind Farm • Representative seismic spectra • Application of Frequency-dependant weighting (FDW) to representative spectra and comparison to 2005 Budget prediction • Factor of over-estimate by 2005 Budget with respect to distance from EKA • Prospect of headroom in the Budget

  3. Sensor selection • Modelled background noise by examining narrow bands between blade-pass frequencies • The quietest sites were: • 6351 / AEG-5 • 6099 / AEG -2b • This correlates with the analysis of Dr Bowers

  4. Representative spectra • Take the spectral interquartile mean of all data with wind speed in the11-12 ms-1 range • Result correlates well with that of Dr Bowers • 6099 / AEG-2b

  5. Representative spectra • Take the spectral interquartile mean of all data with wind speed in the11-12 ms-1 range • Result correlates well with that of Dr Bowers • 6351 / AEG-5

  6. Over-estimate factor • The frequency dependent weighting function (FDW) to representative spectra • FDW contains a distance term, so the over-estimate is distance dependent

  7. Prospect for head-room – 0.336 nm threshold

  8. Conclusions • Results support finding of Dr Bowers, high correlation in results • The 2005 Budget over-estimates the amplitude of seismic ground vibration produced by wind turbines • The over-estimate is depends on the distance from EKA. It varies between: • Over-estimate by a factor of 10 for turbines 10 km from EKA • Over-estimate by a factor of 1.2 for turbines 50 km from EKA • If the turbines at Craig Wind Farm are representative of other turbine in the consultation zone then is a likelihood of significant prospective head room that would allow the building of further wind turbine without breaching the 0.336 nm threshold.

More Related