16.3.4 Turbines 17.
Blade Length Blade Chord
Minimum Blade Clearance Maximum Rotor Diameter Minimum Hub Height Maximum Tip Height
Nacelle dimensions including hub (HxWxL) Operating Wind Speed Range (cut-in / cut-out) Operating speed range Swept Area (per WTG)
Maximum number WTG in site Layout pattern
18.
Turbine data was provided to Cyrrus by EATL as per Table 1. Turbine
m m
m(MHWS) m
m(LAT) m(LAT) m
m/s rpm m2 -
Table 1:- Turbine Data
To provide additional granularity to the radar analysis and as a basis for discussion with NATS and the MOD, turbine heights of 204m and 220m were also included in the modelling.
19. As the turbine dimensions and layout have not been determined, Cyrrus identified “simulated” turbine locations along the western and northern boundaries of the East Anglia THREE site to illustrate the extent of radar coverage at the different maximum tip heights. These “simulated” turbine locations are shown in the following diagrams as white dots.
16.3.5 Terrain Data
• ASTER GDEM 1.5 arc seconds resolution. • NextMap 25m DTM in area around radars (Perpetual Licence)
16.3.6 Analysis Tools
• ATDI ICS Designer v 3.4.1 x64 R1343 Radio Network analysis tool • Global Mapper v14 • ATDI plugin for Global Mapper V1.00 • AutoCAD 2014 and ZWCAD 2011
20. Ordnance Survey National Grid Reference (OSGB36) is used as a common working datum for all mapping and geodetic references.
21. All heights are Above Mean Sea Level (AMSL). Newlyn datum.
22. Mapping datum transformations are made using Global Mapper (Blue Marble) or OS Grid Inquest (OSTN2).
Preliminary Environmental Information May 2014
East Anglia THREE Offshore Windfarm
Appendix 0 Example Page 5
7MW 75
5.0 22
154 99
178
9.0x9.2x20.6 3 / 25 5 - 11
18,627 172
12MW 108 6.5 22
220 133 244
12x12x26 2 / 35 3 - 9
38,013 100
Blocks with regular rows
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