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

Table 2

Discretization rules of the transformer operational risk assessment data.

Item	Original data scope	Discretized data	Original data scope	Discretized data	Original data scope	Discretized data
A	0.000~0.500	0	0.501~1.000	1	1.001~1.500	2
B	0.000~5.000	0	5.001~10.000	1	10.001~20.000	2
C	0.000~0.500	0	0.501~1.000	1	1.001~3.000	2
D	0.000~0.900	0	0.901~1.800	1	1.001~2.700	2
E	0.000~0.500	0	0.501~1.500	1	1.501~3.000	2
F	0.000~0.500	0	0.501~1.000	1	1.001~10.000	2
G	0.000~0.300	0	0.301~0.600	1	0.601~0.900	2