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