ExcIEEEST1A

Class Description

IEEE 421.5-2005 type ST1A model. This model represents systems in which excitation power is supplied through a transformer from the generator terminals (or the unit’s auxiliary bus) and is regulated by a controlled rectifier. The maximum exciter voltage available from such systems is directly related to the generator terminal voltage.
Reference: IEEE 421.5-2005, 7.1.

Attributes

Name Type Description
vimax PU Maximum voltage regulator input limit (VIMAX) (> 0). Typical value = 999.
vimin PU Minimum voltage regulator input limit (VIMIN) (< 0). Typical value = -999.
vrmax PU Maximum voltage regulator outputs (VRMAX) (> 0). Typical value = 7,8.
vrmin PU Minimum voltage regulator outputs (VRMIN) (< 0). Typical value = -6,7.
ilr PU Exciter output current limit reference (ILR). Typical value = 0.
ka PU Voltage regulator gain (KA) (> 0). Typical value = 190.
kc PU Rectifier loading factor proportional to commutating reactance (KC) (>= 0). Typical value = 0,08.
kf PU Excitation control system stabilizer gains (KF) (>= 0). Typical value = 0.
klr PU Exciter output current limiter gain (KLR). Typical value = 0.
pssin Boolean Selector of the Power System Stabilizer (PSS) input (PSSin).
true = PSS input (Vs) added to error signal
false = PSS input (Vs) added to voltage regulator output.
Typical value = true.
ta Seconds Voltage regulator time constant (TA) (>= 0). Typical value = 0.
tb Seconds Voltage regulator time constant (TB) (>= 0). Typical value = 10.
tb1 Seconds Voltage regulator time constant (TB1) (>= 0). Typical value = 0.
tc Seconds Voltage regulator time constant (TC) (>= 0). Typical value = 1.
tc1 Seconds Voltage regulator time constant (TC1) (>= 0). Typical value = 0.
tf Seconds Excitation control system stabilizer time constant (TF) (>= 0). Typical value = 1.
uelin ExcIEEEST1AUELselectorKind Selector of the connection of the UEL input (UELin). Typical value = ignoreUELsignal.
vamax PU Maximum voltage regulator output (VAMAX) (> 0). Typical value = 14,5.
vamin PU Minimum voltage regulator output (VAMIN) (< 0). Typical value = -14,5.

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