Operational Risk Assessment of Distribution Network Equipment Based on Rough Set and D-S Evidence Theory

Table 3

Discernibility matrix of the transformer.

Order	1	2	3	4	5
1	Ø
2	𝐴,𝐶,𝐷,𝐸,𝐹	Ø
3	𝐴,𝐵,𝐶,𝐷,𝐹,𝐺	𝐵,𝐶,𝐷,𝐸,𝐹,𝐺	Ø
4	𝐴,𝐷,𝐸,𝐹,𝐺	𝐶,𝐺	𝐵,𝐶,𝐷,𝐸,𝐹	Ø
5	𝐴,𝐵,𝐶,𝐷,𝐸,𝐹	𝐵,𝐶	𝐵,𝐷,𝐸,𝐹,𝐺	𝐵,𝐶,𝐺	Ø