IEEE 9-BUS MODIFIED TEST SYSTEM DATA
Nomenclature
Rated MVA
Machine-rated MVA; base MVA for impedances
Rated kV
Machine-rated terminal voltage in kV; base kV for impedances
Inertia constant in s
Machine load damping coefficient
Armature resistance in p.u.
Unsaturated d axis synchronous reactance in p.u.
Unsaturated q axis synchronous reactance in p.u.
Unsaturated d axis transient reactance in p.u.
Unsaturated q axis transient reactance in p.u.
Unsaturated d axis subtransient reactance in p.u.
Unsaturated q axis subtransient reactance in p.u.
Leakage or Potier reactance in p.u.
d axis transient open circuit time constant in s
q axis transient open circuit time constant in s
d axis subtransient open circuit time constant in s
q axis subtransient open circuit time constant in s
Machine saturation at 1.0 p.u. voltage in p.u.
Machine saturation at 1.2 p.u. voltage in p.u.
Regulator input filter time constant in s
Regulator gain (continuous acting regulator) in p.u.
Regulator time constant in s
Maximum regulator output, starting at full load field voltage in p.u.
Minimum regulator output, starting at full load field voltage in p.u.
Exciter self-excitation at full load field voltage in p.u.
Exciter time constant in s
Regulator stabilizing circuit gain in p.u.
Regulator stabilizing circuit time constant in s
Field voltage value,1 in p.u.
Saturation factor at E
1
Field voltage value,2 in p.u.
Saturation factor at E
2
Maximum turbine output in p.u.
Turbine steady-state regulation setting or droop in p.u.
Control time constant (governor delay) in s
Hydro reset time constant in s
Servo time constant in s
Steam valve bowl time constant in s
Steam reheat time constant in s
Shaft output ahead of reheater in p.u.
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