1、 IEC/TS 62758 Edition 1.0 2012-09 TECHNICAL SPECIFICATION Calibration of space charge measuring equipment based on the pulsed electro-acoustic(PEA)measurement principle IEC/TS 62758:2012(E)colourinsideCopyrighted material licensed to BR Demo by Thomson Reuters(Scientific),Inc.,downloaded on Nov-27-2
2、014 by James Madison.No further reproduction or distribution 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
3、 any means,electronic or mechanical,including photocopying and microfilm,without permission in writing from either IEC or IECs member National Committee in the country of the requester.If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publicat
4、ion,please contact the address below or your local IEC member National Committee for further information.IEC Central Office Tel.:+41 22 919 02 11 3,rue de Varemb Fax:+41 22 919 03 00 CH-1211 Geneva 20 infoiec.ch Switzerland www.iec.ch About the IEC The International Electrotechnical Commission(IEC)i
5、s the leading global organization that prepares and publishes International Standards for all electrical,electronic and related technologies.About IEC publications The technical content of IEC publications is kept under constant review by the IEC.Please make sure that you have the latest edition,a c
6、orrigenda or an amendment might have been published.Useful links:IEC publications search-www.iec.ch/searchpub The advanced search enables you to find IEC publications by a variety of criteria(reference number,text,technical committee,).It also gives information on projects,replaced and withdrawn pub
7、lications.IEC Just Published-webstore.iec.ch/justpublished Stay up to date on all new IEC publications.Just Published details all new publications released.Available on-line and also once a month by email.Electropedia-www.electropedia.org The worlds leading online dictionary of electronic and electr
8、ical terms containing more than 30 000 terms and definitions in English and French,with equivalent terms in additional languages.Also known as the International Electrotechnical Vocabulary(IEV)on-line.Customer Service Centre-webstore.iec.ch/csc If you wish to give us your feedback on this publicatio
9、n or need further assistance,please contact the Customer 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/TS 62758 Editio
10、n 1.0 2012-09 TECHNICAL SPECIFICATION Calibration of space charge measuring equipment based on the pulsed electro-acoustic(PEA)measurement principle INTERNATIONAL ELECTROTECHNICAL COMMISSION V ICS 17.220.99;29.035.01;29.080.30 PRICE CODE ISBN 978-2-83220-336-1 Registered trademark of the Internation
11、al Electrotechnical Commission Warning!Make sure that you obtained this publication from an authorized distributor.colourinsideCopyrighted 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.
12、Uncontrolled when printed.2 TS 62758 IEC:2012(E)CONTENTS FOREWORD.4 INTRODUCTION.6 1 Scope.7 2 Normative references.7 3 Terms and definitions.7 4 Basic theory for measurement.8 4.1 Permittivity and induced charge density.8 4.2 Charge in dielectrics and Poissons law.8 4.3 Coulombic force of charge in
13、 electric field.9 4.4 Reflection and transmission of pressure wave.9 4.5 Maxwell stress.9 4.6 Response of linear system.10 5 Procedure to calibrate the space charge measurement.10 5.1 Principle of calibration.10 5.1.1 General.10 5.1.2 Typical result of calibration measurement.11 5.2 Sample preparati
14、on.12 5.2.1 Sample for calibration measurement.12 5.2.2 Sample placement.13 5.3 Data acquisition.13 5.3.1 Pulse voltage test.13 5.3.2 Averaging.13 5.3.3 Data acquisition for calibration.14 5.3.4 Signal obtained under short circuit condition.15 5.4 Data processing and calibration.15 5.4.1 Deconvoluti
15、on.15 5.4.2 Calibration for horizontal axis and calculation of waveform for electric field distribution.16 5.4.3 Calibration for electric field and charge density distributions.16 5.4.4 Confirmation of linearity of measurement.17 5.4.5 Typical test results by expert members of project team.17 Annex
16、A(informative)Theory of PEA method.21 Bibliography.35 Figure 1 Theoretical distributions for calibration measurement.11 Figure 2 Typical result of calibration measurement.12 Figure 3 Drop of silicone oil and sample placement.13 Figure 4 Pulse voltage application test.13 Figure 5 Dependence of averaging number.14 Figure 6 Measurement of waveform for calibration.15 Figure 7 Confirmation of absence of space charge accumulation during d.c.voltage application for calibration.15 Figure 8 Deconvolut
