Integrated Transformer Health Estimation Methodology Based on Markov Chains and Evidential Reasoning

Table 1

Weighting factors for different ET components.

No	ET component	Weighting factor ()
1	Magnetic core	3
2	Geometry end electric contacts of windings	4
3	Insulation	4
4	Bushings	5
5	On-line tap changer	5
6	DGA analysis for the active part	5
7	Transformer oil	4
8	Transformer tank and auxiliary equipment	2
9	Work history	3