Table 2 Evaluation scale for alternatives.

From: New energy power system operation security evaluation based on the SWOT analysis

Linguistic term

Triangular fuzzy numbers

Rarely poor (RP)

(0.1, 0.1, 0.1)

Highly poor (HP)

(0.1, 0.1, 0.3)

Poor (P)

(0.1, 0.3, 0.3)

Middle poor (MP)

(0.3, 0.3, 0.5)

Middle (M)

(0.3, 0.5, 0.5)

Middle good (MG)

(0.5, 0.5, 0.7)

Good (G)

(0.5, 0.7, 0.7)

Highly good (HG)

(0.7, 0.7, 0.9)

Rarely good (RG)

(0.7, 0.9, 0.9)