ExcDC2A

Class Description

Modified IEEE DC2A direct current commutator exciter with speed input, one more leg block in feedback loop and without underexcitation limiters (UEL) inputs. DC type 2 excitation system model with added speed multiplier, added lead-lag, and voltage-dependent limits.

Attributes

Name Type Description
efd1 PU Exciter voltage at which exciter saturation is defined (Efd1) (> 0). Typical value = 3,05.
efd2 PU Exciter voltage at which exciter saturation is defined (Efd2) (> 0). Typical value = 2,29.
exclim Boolean (exclim). IEEE standard is ambiguous about lower limit on exciter output.
true = a lower limit of zero is applied to integrator output
false = a lower limit of zero is not applied to integrator output.
Typical value = true.
ka PU Voltage regulator gain (Ka) (> 0). Typical value = 300.
ke PU Exciter constant related to self-excited field (Ke). If Ke is entered as zero, the model calculates an effective value of Ke such that the initial condition value of Vr is zero. The zero value of Ke is not changed. If Ke is entered as non-zero, its value is used directly, without change. Typical value = 1.
kf PU Excitation control system stabilizer gain (Kf) (>= 0). Typical value = 0,1.
ks PU Coefficient to allow different usage of the model-speed coefficient (Ks). Typical value = 0.
seefd1 Float Exciter saturation function value at the corresponding exciter voltage, Efd1 (Se[Efd1]) (>= 0). Typical value = 0,279.
seefd2 Float Exciter saturation function value at the corresponding exciter voltage, Efd2 (Se[Efd2]) (>= 0). Typical value = 0,117.
ta Seconds Voltage regulator time constant (Ta) (> 0). Typical value = 0,01.
tb Seconds Voltage regulator time constant (Tb) (>= 0). Typical value = 0.
tc Seconds Voltage regulator time constant (Tc) (>= 0). Typical value = 0.
te Seconds Exciter time constant, integration rate associated with exciter control (Te) (> 0). Typical value = 1,33.
tf Seconds Excitation control system stabilizer time constant (Tf) (> 0). Typical value = 0,675.
tf1 Seconds Excitation control system stabilizer time constant (Tf1) (>= 0). Typical value = 0.
vrmax PU Maximum voltage regulator output (Vrmax) (> ExcDC2A.vrmin). Typical value = 4,95.
vrmin PU Minimum voltage regulator output (Vrmin) (< 0 and < ExcDC2A.vrmax). Typical value = -4,9.
vtlim Boolean (Vtlim).
true = limiter at the block (Ka / [1 + sTa]) is dependent on Vt
false = limiter at the block is not dependent on Vt.
Typical value = true.

Relationships

Inherits from

Descendant classes

  • No descendant classes

Leaf/Root class

IsLeaf IsRoot
False False

Associations

None