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A 3-phase, 60 Hz, 2-pole steam tubine synchronous generator rated at 990 MVA, 25 kV, 0.9 power factor has total moment of inertia WR2 (including the turbine) equal to 817,000 lb ft2. Compute the following: moment of inertia J , in [kg m2]; inertia constant H in [MW s/MVArating]; stored energy, MWs at rated speed; the mechanical starting Note: Mechanical starting time is the time required to accelerate from ω = 0 to the synchronous speed (rated mechanical speed) when the r

A 3-phase, 60 Hz, 2-pole steam tubine synchronous generator rated at 990 MVA, 25 kV, 0.9 power factor has total moment of inertia WR2 (including the turbine) equal to 817,000 lb ft2. Compute the following: moment of inertia J , in [kg m2]; inertia constant H in [MW s/MVArating]; stored energy, MWs at rated speed; the mechanical starting Note: Mechanical starting time is the time required to accelerate from ω = 0 to the synchronous speed (rated mechanical speed) when the r

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  • A 3-phase, 60 Hz, 2-pole steam tubine synchronous generator rated at 990 MVA, 25 kV, 0.9 power factor has total moment of inertia WR2 (including the turbine) equal to 817,000 lb ft2. Compute the following:
    1. moment of inertia J , in [kg m2];
    2. inertia constant H in [MW s/MVArating];
    3. stored energy, MWs at rated speed;
    4. the mechanical starting

Note: Mechanical starting time is the time required to accelerate from ω = 0 to the synchronous speed (rated mechanical speed) when the rotor is driven at 1.0 pu accelerating torque (i.e., Ta = Tm = 1.0 pu). It can be derived using swing equation.

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