1、 IEC 61400-11 Edition 3.0 2012-11 INTERNATIONAL STANDARD Wind turbines Part 11:Acoustic noise measurement techniques IEC 61400-11:2012(E)colourinsideCopyrighted material licensed to BR Demo by Thomson Reuters(Scientific),Inc.,downloaded on Nov-27-2014 by James Madison.No further reproduction or dist
2、ribution is permitted.Uncontrolled when printed.THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2012 IEC,Geneva,Switzerland All rights reserved.Unless otherwise specified,no part of this publication may be reproduced or utilized in any form or by any means,electronic or mechanical,including photoc
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9、omer Service Centre:csciec.ch.Copyrighted material licensed to BR Demo by Thomson Reuters(Scientific),Inc.,downloaded on Nov-27-2014 by James Madison.No further reproduction or distribution is permitted.Uncontrolled when printed.IEC 61400-11 Edition 3.0 2012-11 INTERNATIONAL STANDARD Wind turbines P
10、art 11:Acoustic noise measurement techniques INTERNATIONAL ELECTROTECHNICAL COMMISSION XA ICS 27.180 PRICE CODE ISBN 978-2-83220-463-4 Registered trademark of the International Electrotechnical Commission Warning!Make sure that you obtained this publication from an authorized distributor.colourinsid
11、eCopyrighted material licensed to BR Demo by Thomson Reuters(Scientific),Inc.,downloaded on Nov-27-2014 by James Madison.No further reproduction or distribution is permitted.Uncontrolled when printed.2 61400-11 IEC:2012(E)CONTENTS FOREWORD.5 INTRODUCTION.7 1 Scope.8 2 Normative references.8 3 Terms
12、and definitions.9 4 Symbols and units.12 5 Outline of method.13 6 Instrumentation.14 6.1 Acoustic instruments.14 6.1.1 General.14 6.1.2 Equipment for the determination of the equivalent continuous A-weighted sound pressure level.14 6.1.3 Equipment for the determination of A-weighted 1/3-octave band
13、spectra.14 6.1.4 Equipment for the determination of narrow band spectra.14 6.1.5 Microphone with measurement board and windscreen.14 6.1.6 Acoustical calibrator.16 6.1.7 Data recording/playback systems.16 6.2 Non-acoustic Instruments.16 6.2.1 General.16 6.2.2 Anemometers.16 6.2.3 Electric power tran
14、sducer.17 6.2.4 Other instrumentation.17 6.3 Traceable calibration.17 7 Acoustic measurements and measurement procedures.17 7.1 Acoustic measurement positions.17 7.2 Acoustic measurements.20 7.2.1 General.20 7.2.2 Acoustic measurement requirements.20 7.2.3 A-weighted sound pressure level.21 7.2.4 A-
15、weighted 1/3-octave band measurements.21 7.2.5 A-weighted narrow band measurements.21 7.2.6 Optional acoustic measurements at positions 2,3 and 4.21 7.2.7 Other optional measurements.21 8 Non-acoustic measurements.21 8.1 General.21 8.2 Wind speed measurements.22 8.2.1 Determination of the wind speed
16、 during wind turbine operation.22 8.2.2 Wind speed measurements during background noise measurements.23 8.3 Downwind direction.24 8.4 Other atmospheric conditions.24 8.5 Rotor speed and pitch angle measurement.24 9 Data reduction procedures.24 9.1 General methodology for sound power levels and 1/3-octave band levels.24 9.2 Calculation of sound pressure levels.27 Copyrighted material licensed to BR Demo by Thomson Reuters(Scientific),Inc.,downloaded on Nov-27-2014 by James Madison.No further
