Constant of Inertia in Power System Formulas

Constant of Inertia is defined as the ratio of kinetic energy stored at the synchronous speed to the generator kVA or MVA rating. And is denoted by H. Constant of Inertia is usually measured using the Kilogram Square Meter for Moment of Inertia. Note that the value of Constant of Inertia is always positive.

Power System formulas that make use of Constant of Inertia

fxInertia Constant of MachineGo

fxClearing TimeGo

fxTime Constant in Power System StabilityGo

fxCritical Clearing Time under Power System StabilityGo

fxClearing AngleGo

FAQ

What is the Constant of Inertia?

Constant of Inertia is defined as the ratio of kinetic energy stored at the synchronous speed to the generator kVA or MVA rating. Constant of Inertia is usually measured using the Kilogram Square Meter for Moment of Inertia. Note that the value of Constant of Inertia is always positive.

Can the Constant of Inertia be negative?

No, the Constant of Inertia, measured in Moment of Inertia cannot be negative.

What unit is used to measure Constant of Inertia?

Constant of Inertia is usually measured using the Kilogram Square Meter[kg·m²] for Moment of Inertia. Kilogram Square Centimeter[kg·m²], Kilogram Square Millimeter[kg·m²], Gram Square Centimeter[kg·m²] are the few other units in which Constant of Inertia can be measured.

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