Summary
The analysis of furanic compounds in the insulating oil of power transformers is used to characterize the thermal degradation of the solid paper insulation in transformers. In this Brochure, different aspects (analysis, factors of influence, diagnosis methods, statistical approach and user's experiences) have been considered to make the interpretation easier. The formation, detection and behavior of these components in a transformer are described. A survey was conducted to present how these compounds are currently being used by utilities. Finally, real cases are given which demonstrate the usefulness and limitation of the technique.
Table of content
1. Summary
2. Introduction
2.1. Background and ambition of work
2.2. Origin of the furanic compounds
2.3. Furanic compounds detection
3. Analytical concerns
3.1. Introduction
3.2. Participant laboratories
3.3. Description of the RRT samples
3.4. Results of RRT
3.5. Results and recommendations
4. Factors influencing furanic compounds concentration
4.1. Introduction
4.2. Partition effect
4.3. Factors influencing the 2-FAL formation
4.4. Stability
4.5. Influence of maintenance
5. Diagnosis methods
5.1. Correlation with degree of polymerization
5.2. Presence of the other related furanic compounds
5.3. Critical thresholds
5.4. Ratios of different furanic compounds
5.5. Residual life estimation
6. Statistical study
6.1. Universal values: are they possible?
6.2. Typicals values
6.3. Conclusions from statistical study
7. Diagnostic experience
7.1. Survey
7.2. Case studies
8. Conclusion
8.1. Conclusions
8.2. Recommendations
Annex 1: Summary of methods used to detect furanic compounds in oil
Annex 2: Round robin test additional results
Annex 3: Literature review of the statistical populations retained for the study of 2-FAL in transformers
Annex 4: CIGRE WG D1.01 (TF 13) transformer oil lab survey
Additional informations
| Publication type | Technical Brochures |
|---|---|
| Reference | 494 |
| Publication year | |
| Publisher | CIGRE |
| ISBN | 978-2-85873-186-2 |
| Study committees | |
| Working groups | WG D1.01 |
| File size | 1 MB |
| Pages number | 71 |
| Price for non member | 140 € |
| Price for member | Free |
Authors
Marie-Claude Lessard, Convenor (CA)
Ivanka Atanasova Höhlein (DE), Teresa Buchacz (PL), Luiz Cheim (USA), Steve Eeckhoudt (BE), Barry Finlay (AU), Maja Koncan-Gradnik (SI), Harald E. Haehre (NO), Anne Marie Haug (NO), Richard Heywood (GB), Hans Josef Knab (CH), Riccardo Maina (IT), Maria Augusta Martins (PT), Tom A. Prevost (US), Yongyuth Vachiratapadom (TH), Julie Van Peteghem (BE)
