Appendix 4A Candidate Turbine Manufacturer Data

Transcription

1 Appendix 4A Candidate Turbine Manufacturer Data Stornoway Wind Farm Environmental Statement (March 2015) Noise 4-19

2 Standard Acoustic Emission, SWT , Rev. 0 Document ID: E W TE SD / Restricted Siemens corporate proprietary information Standard Acoustic Emission SWT , Rev. 0 Typical Sound Power Levels The sound power levels are presented with reference to the code IEC ed. 2.1 ( ) based on a hub height of 94.0 m and a roughness length of 0.05 m as described in the IEC code. The sound power levels (L WA ) presented are valid for the corresponding wind speeds referenced to a height of 10.0 m above ground level. Wind speed [m/s] Up to cut-out Standard setting "-1dB" "-2dB" "-3dB" "-4dB" "-5dB" "-6dB" Table 1: Acoustic emission, L WA [db(a) re 1 pw] Low Noise Operations The lower sound power levels presented for the settings listed above are achieved by adjusting the turbines controller settings, i.e. an optimization of rpm and pitch. The noise settings are not static and can be applied to optimize the operational output of the turbine. Noise settings can be tailored to time of day as well as wind direction to offer the most suitable solution for a specific location. This functionality is controlled via the WebWPS SCADA system and is described further in the white paper on Noise Reduction Operations. Furthermore, tailored power curves can be provided which take wind speed into consideration allowing for management of the turbine output power and noise emission level to comply with site specific noise requirements. Tailored power curves are project and turbine specific and will therefore require Siemens Wind Power Siting involvement to provide the optimal solutions. The lower sound power levels may not be applicable to all tower variants. Please contact Siemens for further information. Siemens Wind Power All Rights Reserved 2014 p 1/2 TL / DLL

3 Standard Acoustic Emission, SWT , Rev. 0 Document ID: E W TE SD / Restricted Siemens corporate proprietary information Typical Sound Power Frequency Distribution Typical spectra for L WA in db(a) re 1 pw for the corresponding centre frequencies are tabulated below for 6 and 8 m/s referenced to a height of 10.0 m above ground level. 1/1 oct. band, center freq Std. setting "-1dB" "-2dB" "-3dB" "-4dB" "-5dB" "-6dB" Table 2: Typical 1/1 octave band spectrum for 63 Hz to 8 khz at 6 m/s 1/1 oct. band, center freq Std. setting "-1dB" "-2dB" "-3dB" "-4dB" "-5dB" "-6dB" Table 3: Typical 1/1 octave band spectrum for 63 Hz to 8 khz at 8 m/s Siemens Wind Power and its affiliates reserve the right to change the above specification without prior notice. Siemens Wind Power All Rights Reserved 2014 p 2/2 TL / DLL

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5 GLGH S-0009-A (extract from WT GLGH A-0004-A) Page 1 of 2 Summary of results of the noise emission measurement, in accordance with IEC , 11, of a WTGS of the type Senvion 1) 3.4M 104 Site: Großenwiehe (Turbine No ) Customer: Senvion SE 1) Überseering Hamburg Germany Contractor: Measurement geometry: Hub height above ground: m Measurement distance R0: m Height of microphone ha:... 0 m Distance rotor centre to tower axis d:... 4,3 m Measurement conditions: Measurement date(s): Range of wind speed at 10m height, 1-min average WS10m:... 2,9-10,1 m/s Wind direction:... SW Range of power, 1-min-average Pw el: kw Air pressure pluft: hpa Air temperature TLuft:... 9,9-18,4 C Turbulence intensity:... 18,3 % Power curve: From report: DEWI W-PV A Testing Auth.: DEWI GmbH Measurement Period: WS (m/s) Power (kw) GL Garrad Hassan Deutschland GmbH Sommerdeich 14 b Kaiser-Wilhelm-Koog Germany Date of Order: Order No.: Extracts from this report may only be reproduced with the written permission of GL Garrad Hassan Deutschland GmbH. This report consists of 2 pages in total. Wind Turbine Technical Data: Type:... Senvion 1) 3.4M 104 Manufacturer:... Senvion SE 1) Turbine serial number: Rated power:... kw Power control:... pitch Tower type:... cylindrical/conical Rotor manufacturer:... PowerBlades GmbH Rotor blade type:... RE50.8 Rotor blade serial number: /0025/0026 Rotor diameter: m Rotor blade pitch angle (degrees):... variable (0-91 ) Number of rotor blades:...3 Rotor speed(s) (or range):... 7,45-13,8 min -1 Gearbox manufacturer:... Eickhoff Gearbox type:... EBN 2525 A03R02A/G53645XC Gearbox serial numbers: Generator manufacturer:... Winergy Generator type:... JFRA-630MR-06A Generator serial number: Generator speed(s) (or range): min -1 Generator rated power: kw These data do not replace the corresponding manufacturer s certificate. Senvion Dokumenten-Nummer Rev. D-3.1-VM.SM.04-D B -EN Freigabe Datum S. Bigalke Determination of the sound power level: WS (m/s) Power (kw) WS (m/s) Power (kw) 2,07-4,95 7, ,74 13, ,96 2,49-5,28 8, ,62 13, ,26 3,03 0,23 8, ,97 14, ,87 3,46 24,05 9, ,70 14, ,91 4,02 89,71 9, ,48 15, ,10 4,52 150,98 10, ,86 15, ,33 5,00 239,95 10, ,73 15, ,79 5,53 370,83 11, ,85 16, ,74 6,04 487,01 11, ,63 16, ,61 6,49 626,83 12, ,83 17, ,48 7,01 798,07 12, ,00 18, ,64 WS10m [m/s] PW el [kw] LWA [db] UC [db] 102,8 104,2 103,9 103,2 102,5 0,9 0,8 0,8 0,9 0,9 This summary in excerpts may only be copied with written consent of GL Garrad Hassan Deutschland GmbH. It totally consists of 3 pages.

6 GLGH S-0009-A (extract from GLGH A-0004-A) Page 2 of 2 Summary of results of the noise emission measurement, in accordance with IEC , 11, of a WTGS of the type Senvion 1) 3.4M 104 Recalculation of L WA for different hub heights in db(a) (WS at a height of 10 m) ** : Hub height [m] LWA (6 m/s) LWA (7 m/s) LWA (8 m/s) LWA (9 m/s) LWA (10 m/s) ,2 104,1 104,1 103,3 102, ,3 104,1 104,0 103,3 102,8 96,5 102,7 104,2 103,9 103,2 102,6 ** A direct recalculation of the tonality is not possible, as other acoustic effects may arise due to the different length of the tower. Third octave sound power spectrum in db(a) for the wind speed in 10 m height corresponding to the maximum sound power level given on page 1: 1/3 octave freq. [Hz] LWA (7,0 m/s) 77,5 80,4 82,6 85,6 86,8 86,7 90,6 92,1 92,2 92,0 94,7 94,8 1/3 octave freq. [Hz] LWA (7,0 m/s) 95,4 95,4 93,8 92,0 88,9 86,6 83,9 79,9 75,7 72,3 69,6 67,0 Linear third octave sound power 1/3- octave spectrum in db for the wind speed in 10 m height 1/3 octave freq. [Hz] 10 12, , LWA (6,0 m/s) 112,1 113,6 109,2 113,0 109,2 107,8 108,6 106,8 105,1 103,6 105,5 LWA (7,0 m/s) 112,6 114,1 110,0 113,2 110,4 108,8 109,3 107,8 106,5 104,9 104,7 LWA (8,0 m/s) 112,6 113,4 109,1 112,6 109,4 108,0 108,7 107,4 105,9 104,7 105,0 LWA (9,0 m/s) 112,5 113,3 108,3 112,6 108,5 107,4 107,8 106,4 105,0 103,4 104,1 LWA (10,0 m/s) 114,0 114,6 109,4 113,2 109,8 108,1 108,9 107,3 105,7 103,8 104,2 Tonality according to IEC /Ed.2: Representative FFT - Spectra (left 8 m/s and right 10 m/s at a height of 10 m): WS in 10 m height [m/s] 6,0 7,0 8,0 9,0 10,0 Freq. of most prevalent tone, f [Hz] Tonality, Lk [db] -5,98-12,30-7,56-8,43-5,35 Audibility, La,k [db] -3,97-10,25-5,55-6,38-3,29 Remarks: The data have been analysed by using a fifth order regression because this is the best fitting approximation through all the relevant data points. Furthermore there are no measured data between10,0 m/s and 10,5 m/s. Therefore a BIN-analysis for the 10 m/s BIN would be not appropriate in view of the [IEC Ed. 2.1]. 1) Because of a company name change of the principal REpower Systems SE in this document the name has changed to Senvion SE as against the name in the original measurement report. With the change of the company name further the name of the turbine types produced by Senvion SE have changed. Except of the name change the legal and objective content of this report concerning the measurement results stay the same. Checked: Engineer: Dipl.-Ing. K. Buchmann Head of Department Acoustics & Inspection Dipl.-Ing. A. Jensen Kaiser-Wilhelm-Koog,

7 3.4M104 [50Hz] Doc.-ID:

8 Disclaimer [European Market] Disclaimer [European Market] Senvion SE Überseering 10 D Hamburg Germany Phone: Fax: Copyright 2014 Senvion SE All rights reserved. Protection Notice DIN ISO 16016: The reproduction, distribution and use of this document as well as the communication of its contents to others without explicit authorization in writing by Senvion SE is strictly prohibited. Offenders will be held liable for the payment of damages. Furthermore, all rights reserved in the event of the grant of a patent or industrial design. Please ensure the latest versions of the applicable specifications are used. Images do not necessarily reflect the exact scope of supply, specifications, size or materials and are subject to technical alterations at any time. Please note that this document may not correspond with project-specific requirements. Possible work procedures described in this product description comply with German, and Senvion s, safety provisions and regulations The laws of other countries may provide for additional safety specifications. It is essential that all safety measures, both project- and country-specific, be strictly complied with. It is the duty of each customer to inform itself, implement and comply with these measures. The applicability and validity of relevant legal and/or contractual provisions, technical guidelines, DIN standards and other comparable regulations are not excluded by the content or examples contained in this product description. Moreover, such contractual provisions and regulations shall continue to apply without any limitation. All information contained in this product description is subject to change at any time without notice to, or approval by, the customer. Senvion SE and/or its affiliates assume no liability for any errors or omissions in the content of this product description. Legal claims against Senvion SE and/or its affiliates based on damage or injury caused by the use or non-use of the information included herein or the use of erroneous or incomplete information are excluded. Although Senvion SE strives to provide information which is accurate and makes this information available to customers in good faith, no representation or warranty is made or guarantee given as to its accuracy or completeness. The sole applicable warranties in respect of the products described herein shall be those provided in a contract executed by an authorized representative of Senvion SE. EXCEPT AS PROVIDED IN SUCH EXECUTED CONTRACT, Senvion MAKES NO WARRANTIES, EXPRESS OR IMPLIED, AS TO THE PRODUCT SPECIFICATIONS, PRODUCT DESCRIPTIONS OR THE PRODUCTS HEREIN DESCRIBED. TO THE EXTENT PERMITTED BY LAW,Senvion EXPRESSLY DISCLAIMS ALL IMPLIED WARRANTIES, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NONINFRINGEMENT. All brands, trade-marks or product names mentioned in this document are the exclusive property of their respective owners. Page 2 / 11

9 Table of contents Table of contents 1 Introduction... 2 Conditions for guarantee and measurement of power curve and sound power level General information... Conditions for power curve guarantee and measurement... Conditions for sound power level guarantee and measurement Guaranteed electrical power curve and guaranteed sound power level Guaranteed electrical power curve... Guaranteed sound power level according to IEC... Guaranteed sound power level according to FGW Guideline at 95 % of rated power Electrical power curve at the low-voltage side (for information only) Page 3 / 11

10 Applicable Documents The documents referred to in the table below are included for information only. Reference to them in this product description does not make them part of the contract. Title Document-No. * If the products referred to in the table above are to be included within the project, the relevant product descriptions in their current version will be amended to the contract. List of Abbreviations and Units Abbreviation / Unit cp ct ΔLa,k FGW IEC WEC v v10 vout Page 4 / 11 Description Power coefficient Thrust coefficient Tonal audibility Fördergesellschaft Windenergie e.v. International Electrotechnical Commission Wind energy converter Wind speed at hub height Wind speed at 10 m height Cut-out wind speed

11 Introduction 1 Introduction This document shows the guaranteed power curve and sound power level of the Senvion 3.4M104/50 Hz and the corresponding guarantee and measurement conditions. Page 5 / 11

12 Conditions for guarantee and measurement of power curve and sound power level 2 Conditions for guarantee and measurement of power curve and sound power level 2.1 General information Rotor diameter: 104 m Cut in wind speed: 3.5 m/s Cut out wind speed: 25.0 m/s Wind speed at hub height: 10 min. mean value Blades: clean, without ice or snow formation 2.2 Conditions for power curve guarantee and measurement Verification according to IEC : 2005 Turbulence intensity: 6 to 20 % Terrain: not complex acc. to IEC : 2005 Vertical wind shear coefficient (measured between hub height and lower blade tip): [-] Air density at location (10 min. mean value): 1.13 kg/m3 Temperature range: acc. to related standard conditions of use Anemometer type: Thies First Class / Thies First Class Advanced For obstacle assessment according to : 2005 Annex A.2 the following condition applies: To determine significant obstacles the procedure Power Performance Measurement Procedure Version 5, December 2009 chapter 3.9 has to be followed. In addition no obstacles with a height greater than 1/3 of the distance between the ground and the lower blade tip shall exist in the measurement sector within 0-4 rotor diameters of the WEC or met mast. Fig : Arrangement of a measuring unit for the power curve measurement of a Senvion 3.XM Page 6 / 11

13 Conditions for guarantee and measurement of power curve and sound power level 2.3 Conditions for sound power level guarantee and measurement Verification acc. to IEC : A1: 2006 Roughness length (average peak): 0.05 m Here method 1, as outlined in of the IEC standard , shall be applied. Page 7 / 11

14 Guaranteed electrical power curve and guaranteed sound power level 3 Guaranteed electrical power curve and guaranteed sound power level 3.1 Guaranteed electrical power curve Values related to an air density of kg/m3 Wind speed v [m/s] Power P [kw] Thrust coefficient ct [-] Power coefficient cp [-] The electrical power is guaranteed for pure active power set points. The electrical power is guaranteed on the medium-voltage side of the transformer. transformer losses are included in this table. Page 8 / 11

15 Guaranteed electrical power curve and guaranteed sound power level 3.2 Guaranteed sound power level according to IEC The sound power level guaranteed by Senvion SE excludes measurement uncertainty. Senvion SE warrants that there is no tonal audibility ΔLa.k > 0 db (for v10 6 m/s). Sound Power Level according to IEC for wind speed in hub height Wind speed v [m/s] Sound Power Level LWA [db(a)] Sound Power Level according to IEC for wind speed in 10 m height Wind speed v10 [m/s] m Sound Power Level LWA [db(a)] m m Page 9 / 11

16 Guaranteed electrical power curve and guaranteed sound power level Wind speed v10 [m/s] vout m Sound Power Level LWA [db(a)] m m Guaranteed sound power level according to FGW Guideline at 95 % of rated power The sound power level measured according to the "Technische Richtlinie für Windenergieanlagen Teil1: Rev. 18 der FGW" at 95 % of the rated power is independent of the hub height: LWA,95 % = db(a) Page 10 / 11

17 Electrical power curve at the low-voltage side (for information only) 4 Electrical power curve at the low-voltage side (for information only) The electrical power curve at the low-voltage-side of the Senvion 3.4M104 is a theoretical one which is applicable at the low-voltage side of the transformer and does not include the transformer losses. It is based on calculations and has been derived from the guaranteed electrical power curve in chapter 3 using typical operation conditions of the electrical system. The electrical power curve at the low-voltage side is for informative purposes only and is not content of the guaranteed electrical power curve. Wind speed v [m/s] Power P [kw] Thrust coefficient ct [-] Power coefficient cp [-] Transformer losses are not included. Page 11 / 11