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Table 3 IEEE first benchmark shaft parameters

From: Fractional-order PI based STATCOM and UPFC controller to diminish subsynchronous resonance

Inertia

\({\text{H }}\left[ {{\text{s}}^{ - 1} } \right]\)

Shaft section

Spring constant [per unit T/rad]

High pressure turbine

0.092897

HP-IP

19.303

Intermediate pressure turbine

0.155589

IP-LPA

34.929

Low pressure A turbine

0.858670

LPA-LPB

52.038

Low pressure B turbine

0.884215

LPB-GEN

70.858

Generator

0.868495