1、 IEC TR 62681 Edition 1.0 2014-08 TECHNICAL REPORT Electromagnetic performance of high voltage direct current(HVDC)overhead transmission lines IEC TR 62681:2014-08(en)colourinsideCopyrighted material licensed to BR Demo by Thomson Reuters(Scientific),Inc.,downloaded on Nov-27-2014 by James Madison.N
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11、righted 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 TR 62681 Edition 1.0 2014-08 TECHNICAL REPORT Electromagnetic performance of high voltage direct curr
12、ent(HVDC)overhead transmission lines INTERNATIONAL ELECTROTECHNICAL COMMISSION XD ICS 29.240.20 PRICE CODE ISBN 978-2-8322-1780-1 Registered trademark of the International Electrotechnical Commission Warning!Make sure that you obtained this publication from an authorized distributor.colourinsideCopy
13、righted 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 IEC TR 62681:2014 IEC 2014 CONTENTS FOREWORD.6 INTRODUCTION.8 1 Scope.9 2 Terms and definitions.9 3 Ele
14、ctric field and ion current.10 3.1 Description of the physical phenomena.10 3.2 Calculation methods.13 3.2.1 General.13 3.2.2 Semi-analytic method.14 3.2.3 Finite element method.16 3.2.4 BPA method.17 3.2.5 Empirical methods of EPRI.18 3.2.6 Recent progress.18 3.3 Experimental data.19 3.3.1 General.
15、19 3.3.2 Instrumentation and measurement methods.19 3.3.3 Experimental results for electric field and ion current.21 3.3.4 Discussion.21 3.4 Implication for human and natural environment.22 3.4.1 General.22 3.4.2 Static electric field.23 3.4.3 Research on space charge.23 3.4.4 Scientific review.28 3
16、.5 Design practice of different countries.29 4 Magnetic field.30 4.1 Description of physical phenomena.30 4.2 Magnetic field of HVDC transmission lines.31 5 Radio interference(radio noise).32 5.1 Description of radio interference phenomena of HVDC transmission system.32 5.1.1 General.32 5.1.2 Physical aspects of d.c.corona.32 5.1.3 Mechanism of formation of a noise field of d.c.line.33 5.1.4 Characteristics of radio interference from d.c.line.33 5.1.5 Factors influencing the RI from d.c.line.
