IEEE C37.91 2000
$44.96
IEEE Guide for Protective Relay Applications to Power Transformers
Published By | Publication Date | Number of Pages |
IEEE | 2000 | 81 |
Revision Standard – Inactive – Superseded. The protection of power transformers is covered;various electrical protection schemes are explored;and guidelines are given for the application of these schemes to transformers. Alternative detection methods including mechanical,thermal,and gas analysis are discussed.
PDF Catalog
PDF Pages | PDF Title |
---|---|
1 | Title Page |
3 | Introduction Participants |
5 | CONTENTS |
7 | 1. Overview 1.1 Scope 1.2 Purpose 2. References |
8 | 3. Philosophy and economic considerations |
9 | 4. Types of transformer failures |
10 | 5. Relay current 5.1 Minimum internal faults 5.2 Maximum internal faults 5.3 Through-faults |
11 | 5.4 Performance of CTs |
12 | 5.5 Reasons for mismatch current |
13 | 6. Electrical detection of faults |
14 | 6.1 Fuse protection |
16 | 6.2 Differential protection |
24 | 6.3 Overcurrent relay protection |
27 | 6.4 Ground fault protection |
29 | 6.5 Fault detection for special-purpose transformers |
35 | 6.6 Backup and external fault protection |
37 | 6.7 Temperature relays 6.8 Miscellaneous relays 7. Mechanical detection of faults 7.1 Gas accumulator relay |
38 | 7.2 Gas detector relay 7.3 Pressure relays |
40 | 8. Thermal detection of abnormalities 8.1 Thermal relays for winding temperature |
41 | 8.2 Other means of thermal protection |
44 | 8.3 Testing thermal relays 9. Fault clearing |
45 | 9.1 Relay tripping circuits 9.2 Circuit breakers 9.3 Remote tripping of circuit breakers |
46 | 9.4 Circuit switcher 9.5 Fuses 9.6 Other practices |
47 | 10. Reenergizing practice |
48 | 11. Gas analysis 12. Special protective schemes 12.1 Overall unit generator differential |
50 | 12.2 Unit transformer of three-legged core form type 12.3 Grounding transformer inside the main transformer differential zone |
51 | 12.4 Unbalanced voltage protection for Y connected, three legged, core type transformers |
52 | 12.5 Differential protection of single-phase transformers connected in three-phase banks |
53 | 12.6 Differential protection of a bank of three single-phase autotransformers with Ć tertiary |
54 | 12.7 Differential protection of single-phase transformers in a three-phase bank with a spare tran… |
55 | 13. Other considerations |
56 | 14. Device numbers |
57 | Annex AāApplication of the transformer through-fault current duration guide to the protection of power transformers |
76 | Annex BāBibliography |