BSI PD IEC/TS 62478:2016
$167.15
High voltage test techniques. Measurement of partial discharges by electromagnetic and acoustic methods
| Published By | Publication Date | Number of Pages |
| BSI | 2016 | 38 |
This document is applicable to electromagnetic (HF/VHF/UHF) and acoustic measurements of PDs which occur in insulation of electrical apparatus.
This specification deals with a large variety of applications, sensors of different frequency ranges and differing sensitivities. The tasks of PD location and measuring system calibration or sensitivity check are also taken into account.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 4 | English CONTENTS |
| 6 | FOREWORD |
| 8 | INTRODUCTION |
| 9 | 1 Scope 2 Normative references 3 Terms and definitions |
| 12 | 4 Electromagnetic PD phenomena 4.1 Physical background 4.2 Transmission aspects 4.3 Measuring systems 4.3.1 Electric/electromagnetic fields 4.3.2 Frequency ranges 4.3.3 Sensors |
| 14 | 4.3.4 Instrument related influences |
| 15 | 4.3.5 Instrument quantities 4.3.6 Performance and sensitivity check Figures Figure 1 – Classification of instruments for signal processing |
| 16 | Figure 2 – Overview of the important aspects of electromagnetic PD detection Figure 3 – Overview of performance and sensitivity checks in different apparatus |
| 17 | 5 Acoustic PD phenomena 5.1 Physical background 5.2 Transmission path aspects 5.3 Measuring system 5.3.1 General |
| 18 | 5.3.2 Sensors 5.3.3 Instrument quantities |
| 19 | 5.3.4 Performance and sensitivity check 6 Location of PD sources 6.1 General |
| 20 | 6.2 Electromagnetic methods 6.3 Acoustic methods 6.4 Mixed electromagnetic and acoustic methods |
| 21 | Annex A (informative)Advantages and disadvantages of electromagnetic measurements A.1 Advantages A.2 Disadvantages |
| 22 | Annex B (informative)Advantages and disadvantages of acoustic PD measurements B.1 Advantages B.2 Disadvantages |
| 23 | Annex C (informative)Application-specific aspects C.1 Gas insulated switchgear (GIS) C.2 VHF and UHF methods |
| 24 | C.3 Acoustic methods |
| 25 | C.4 Sensitivity verification of electromagnetic and acoustic measurements on GIS C.4.1 General C.4.2 Sensitivity verification of UHF measurements |
| 26 | C.4.3 Sensitivity verification of acoustic measurement C.4.4 Location of PD sources inside GIS C.4.5 Time-of-flight measurements with the UHF method |
| 27 | C.4.6 Signal reduction analysis C.4.7 Acoustic location methods Figure C.1 – Defect location by time-of-flight measurement |
| 28 | C.5 Rotating machines |
| 29 | C.6 Transformers C.6.1 Physical background of high frequency and acoustic PD phenomena on transformers |
| 30 | C.6.2 UHF PD signals in transformers C.6.3 Acoustic PD signals in transformers C.6.4 Spatial location of PD sources in liquid-insulated transformers/reactors Figure C.2 – Illustration of the physical principle of acousticand electromagnetic PD detection in an oil/paper insulated transformer |
| 31 | C.7 Cable/accessories Figure C.3 – Classical arrival time based PD location for transformers/reactorswith a combination of the electric and acoustic PD signals |
| 35 | Bibliography |
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BSI PD IEC/TS 62478:2016
High voltage test techniques. Measurement of partial discharges by electromagnetic and acoustic methods Published By…
