: Public Class
Created: 02/02/2012 15:04:28
Modified: 18/05/2014 22:03:39
Project:
Advanced:
The class represents IEEE Std 421.5-2005 type AC3A model. The model represents the field-controlled alternator-rectifier excitation systems designated Type AC3A. These excitation systems include an alternator main exciter with non-controlled rectifiers. The exciter employs self-excitation, and the voltage regulator power is derived from the exciter output voltage.  Therefore, this system has an additional nonlinearity, simulated by the use of a multiplier<br/>whose inputs are the voltage regulator command signal, <b>Va</b>, and the exciter output voltage, <b>Efd</b>, times <b>K</b><b><sub>R</sub></b>.  This model is applicable to excitation systems employing static voltage regulators.<br/><br/><br/>Reference: IEEE Standard 421.5-2005 Section 6.3.<br/>
Attribute
Public PU
  efdn
Details:
Notes: Value of <i>EFD </i>at which feedback gain changes (E<sub>FDN</sub>).  Typical Value = 2.36.<br/>
Public PU
  ka
Details:
Notes: Voltage regulator gain (K<sub>A</sub>).  Typical Value = 45.62.<br/>
Public PU
  kc
Details:
Notes: Rectifier loading factor proportional to commutating reactance (K<sub>C</sub>).  Typical Value = 0.104.<br/>
Public PU
  kd
Details:
Notes: Demagnetizing factor, a function of exciter alternator reactances (K<sub>D</sub>).  Typical Value = 0.499.<br/>
Public PU
  ke
Details:
Notes: Exciter constant related to self-excited field (K<sub>E</sub>).  Typical Value = 1.<br/>
Public PU
  kf
Details:
Notes: Excitation control system stabilizer gains (K<sub>F</sub>).  Typical Value = 0.143.<br/>
Public PU
  kn
Details:
Notes: Excitation control system stabilizer gain (K<sub>N</sub>).  Typical Value = 0.05.<br/>
Public PU
  kr
Details:
Notes: Constant associated with regulator and alternator field power supply (K<sub>R</sub>).  Typical Value = 3.77.<br/>
Public Float
  seve1
Details:
Notes: Exciter saturation function value at the corresponding exciter voltage, V<sub>E1</sub>, back of commutating reactance (S<sub>E</sub>[V<sub>E1</sub>]).  Typical Value = 1.143.<br/>
Public Float
  seve2
Details:
Notes: Exciter saturation function value at the corresponding exciter voltage, V<sub>E2</sub>, back of commutating reactance (S<sub>E</sub>[V<sub>E2</sub>]).  Typical Value = 0.1.<br/>
Public Seconds
  ta
Details:
Notes: Voltage regulator time constant (T<sub>A</sub>).  Typical Value = 0.013.<br/>
Public Seconds
  tb
Details:
Notes: Voltage regulator time constant (T<sub>B</sub>).  Typical Value = 0.<br/>
Public Seconds
  tc
Details:
Notes: Voltage regulator time constant (T<sub>C</sub>).  Typical Value = 0.<br/>
Public Seconds
  te
Details:
Notes: Exciter time constant, integration rate associated with exciter control (T<sub>E</sub>).  Typical Value = 1.17.<br/>
Public Seconds
  tf
Details:
Notes: Excitation control system stabilizer time constant (T<sub>F</sub>).  Typical Value = 1.<br/>
Public PU
  vamax
Details:
Notes: Maximum voltage regulator output (V<sub>AMAX</sub>).  Typical Value = 1.<br/>
Public PU
  vamin
Details:
Notes: Minimum voltage regulator output (V<sub>AMIN</sub>).  Typical Value = -0.95.<br/>
Public PU
  ve1
Details:
Notes: Exciter alternator output voltages back of commutating reactance at which saturation is defined (V<sub>E1</sub>) equals V<sub>EMAX </sub>(V<sub>E1</sub>).  Typical Value = 6.24.<br/>
Public PU
  ve2
Details:
Notes: Exciter alternator output voltages back of commutating reactance at which saturation is defined (V<sub>E2</sub>).  Typical Value = 4.68.<br/>
Public PU
  vemin
Details:
Notes: Minimum exciter voltage output (V<sub>EMIN</sub>).  Typical Value = 0.1.<br/>
Public PU
  vfemax
Details:
Notes: Exciter field current limit reference (V<sub>FEMAX</sub>).  Typical Value = 16.<br/>
Object Type Connection Direction Notes
ExcitationSystemDynamics Class Generalization To