Research Article
Research into Power Transformer Health Assessment Technology Based on Uncertainty of Information and Deep Architecture Design
Table 4
Measured values of state indicators of transformer body.
| State indicators | Measured value | Initial value |
| H2 content | 359 | 6.1 | CH4 content | 18.5 | 8.7 | C2H6 content | 92 | 2.3 | C2H4 content | 52 | 4.8 | C2H2 content | 0 | 0 | Total hydrocarbon content | 162.5 | 15.8 | Absolute CO gas production rate | 12 | 0 | Absolute CO2 gas production rate | 31 | 0 | Core grounding current | 3.8 | 0.01 | Core insulation resistance | 200 | 1 000 | Winding absorption ratio | 1.61 | 2 | Polarization index | 2.03 | 2.5 | Imbalance rate of winding DC resistance | 1.5 | 1 | Initial difference of short-circuit impedance | 1.2 | 1 | Winding dielectric loss | 0.36 | 0.17 | Initial difference of winding capacitance | 1.4 | 1 | Apparent discharge | 72 | 30 | Water content in oil | 12.1 | 3.5 | Loss factor of oil medium | 1.7 | 0.5 | Furfural content | 0.05 | 0 | Insulation paper degree of polymerisation | 900 | 1 000 |
|
|