IEEE C57.127 2018:2019 Edition
$53.08
IEEE Guide for the Detection, Location and Interpretation of Sources of Acoustic Emissions from Electrical Discharges in Power Transformers and Power Reactors
| Published By | Publication Date | Number of Pages |
| IEEE | 2019 | 72 |
Revision Standard – Active. The detection and location of acoustic emissions (AEs) from partial discharges (PDs) and otherre sources in liquid-insulated power transformers and reactors are covered in this guide. A means of associating the relative magnitude and position of PDs and otherre sources with the acoustic signals obtained by strategically located transducers is provided.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | IEEE Std C57.127™-2018 Front cover |
| 2 | Title page |
| 4 | Important Notices and Disclaimers Concerning IEEE Standards Documents |
| 7 | Participants |
| 9 | Introduction |
| 10 | Contents |
| 12 | List of Figures |
| 14 | List of Tables |
| 15 | 1. Overview 1.1 Scope 1.2 Purpose 1.3 Safety warning |
| 16 | 2. Definitions, acronyms, and abbreviations 2.1 Definitions |
| 17 | 2.2 Acronyms and abbreviations |
| 18 | 3. Detection and measurement of PD—background information |
| 19 | 4. Acoustic signal and transmission characteristics 4.1 Acoustic signal |
| 22 | 4.2 Acoustic signal propagation |
| 24 | 4.3 Velocity of sound in materials |
| 25 | 4.4 Competing signal paths |
| 27 | 5. AE systems—technical concepts 5.1 Introduction 5.2 All-acoustic system |
| 28 | 5.3 Acoustic system with an electrical PD trigger |
| 29 | 5.4 On-line (continuous) acoustic monitoring system |
| 30 | 5.5 Acoustic sensors |
| 31 | 5.6 Multiple sensors system 5.7 Band-pass filter 6. AE testing 6.1 General considerations on the application of sensors |
| 33 | 7. AE field test procedure 7.1 Introduction 7.2 Test setup 7.3 Sensor placement and initial scan |
| 34 | 7.4 Testing methodologies |
| 35 | 7.5 Reporting and follow up 8. Factory test procedure 8.1 Introduction 8.2 Initial sensor placement |
| 38 | 8.3 Measurements and changing of sensor placement |
| 39 | 9. Characterization of AE signals 9.1 Introduction 9.2 HVDC transformers and reactors |
| 40 | 9.3 Characteristics of PD from static electrification 9.4 Acoustic activity from thermal faults, the core, mechanical noises, and other sources |
| 41 | 9.5 Application of acoustics during factory impulse test |
| 42 | 10. Integrating AE results with data from oil analysis |
| 44 | 11. Acoustic activity interpretation |
| 46 | Annex A (informative) Bibliography |
| 52 | Annex B (informative) Signal processing |
| 55 | Annex C (informative) Tutorial and case studies for detection and location of AE from PD |
| 56 | C.1 Types of systems C.2 Sensors C.3 Acoustic PD systems C.4 Case studies |
| 71 | C.5 Conclusions |
| 72 | Back cover |
