FEATURE SPONSOR
RADAR MITIGATION WIND TURBINE RADAR MITIGATION
For many years, radar objections have delayed the construction of wind developments throughout the UK. During this time, promising mitigation solutions have come to the forefront but have they actually delivered? Moreover, what solution is most likely to remove radar based objections heading into 2016? This article provides a brief update on the current state of radar mitigation solutions.
MICRO-SITING & LAYOUT OPTIMISATION
This remains the most reliable radar mitigation solution that, if economically viable, is the best bet for removing a radar objection. Sometimes a small drop in overall tip height can remove an objection, whilst optimising the layout can reduce the radar’s visibility due to intervening terrain.
RADAR BLANKING
Still a viable option for many small wind developments however, the availability of radar blanks is limited due to existing turbines, existing blanks and airspace usage. Furthermore, it is still the case that only certain radar operators will accept radar blanking.
RADAR DISPLAY UPGRADES This solution dims the returns from wind turbines on the radar display so that the appearance of clutter is reduced. Tests are underway at airports around the UK however, it is not believed that this solution has led to construction of new schemes to date.
IN-FILL RADAR
The process of ‘patching in’ the coverage of an existing unaffected radar to the display of an affected radar. This is a successful mitigation solution but it is only viable in certain locations in the UK where existing radar coverage permits.
STANDALONE IN-FILL RADAR SOLUTIONS
This solution involves a standalone radar sensor at the wind development to provide an in-fill feed to the affected radar’s display. It is believed that this technology has mitigated existing wind developments but it has not has led to construction of new schemes.
PRIMARY RADAR UPGRADES & REPLACEMENTS
This is the most expensive mitigation solution, often requiring a co-op of developers in association with the radar operator. This solution has been implemented primarily to mitigate existing wind developments but it is believed that testing is ongoing at UK radar locations to determine their full potential (for example Project RM implemented by NATS).
CONCLUSIONS
The simplest solutions are still the best in the world of wind turbine radar mitigation. However, these options are not always feasible which is where technical mitigation is required. Most technical solutions are still in their infancy but further testing is ongoing.
Pager Power
www.windenergynetwork.co.uk
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