: Public Class
Created: 03/02/2012 10:38:01
Modified: 23/04/2012 09:35:29
Project:
Advanced:
The class represents IEEE Std 421.5-2005 type ST3A model.  Some static systems utilize a field voltage control loop to linearize the exciter control characteristic. This also makes the output independent of supply source variations until supply limitations are reached.  These systems utilize a variety of controlled-rectifier designs: full thyristor complements or hybrid bridges<br/>in either series or shunt configurations. The power source may consist of only a potential source, either fed from the machine terminals or from internal windings. Some designs may have compound power sources utilizing both machine potential and current. These power sources are represented as phasor combinations of machine terminal current and voltage and are accommodated by suitable parameters in model Type ST3A which is represented by ExcIEEEST3A.<br/><br/><br/>Reference: IEEE Standard 421.5-2005 Section 7.3. <br/>
Attribute
Public PU
  ka
Details:
Notes: Voltage regulator gain (K<sub>A</sub>). This is parameter K in the IEEE Std. Typical Value = 200.<br/>
Public PU
  kc
Details:
Notes: Rectifier loading factor proportional to commutating reactance (K<sub>C</sub>). Typical Value = 0.2.<br/>
Public PU
  kg
Details:
Notes: Feedback gain constant of the inner loop field regulator (K<sub>G</sub>).  Typical Value = 1.<br/>
Public PU
  ki
Details:
Notes: Potential circuit gain coefficient (K<sub>I</sub>).  Typical Value = 0.<br/>
Public PU
  km
Details:
Notes: Forward gain constant of the inner loop field regulator (K<sub>M</sub>).  Typical Value = 7.93.<br/>
Public PU
  kp
Details:
Notes: Potential circuit gain coefficient (K<sub>P</sub>).  Typical Value = 6.15.<br/>
Public Seconds
  ta
Details:
Notes: Voltage regulator time constant (T<sub>A</sub>).  Typical Value = 0.<br/>
Public Seconds
  tb
Details:
Notes: Voltage regulator time constant (T<sub>B</sub>).  Typical Value = 10.<br/>
Public Seconds
  tc
Details:
Notes: Voltage regulator time constant (T<sub>C</sub>).  Typical Value = 1.<br/>
Public AngleDegrees
  thetap
Details:
Notes: Potential circuit phase angle (thetap).  Typical Value = 0.<br/>
Public Seconds
  tm
Details:
Notes: Forward time constant of inner loop field regulator (T<sub>M</sub>).  Typical Value = 0.4.<br/>
Public PU
  vbmax
Details:
Notes: Maximum excitation voltage (V<sub>BMax</sub>).  Typical Value = 6.9.<br/>
Public PU
  vgmax
Details:
Notes: Maximum inner loop feedback voltage (V<sub>GMax</sub>).  Typical Value = 5.8.<br/>
Public PU
  vimax
Details:
Notes: Maximum voltage regulator input limit (V<sub>IMAX</sub>).  Typical Value = 0.2.<br/>
Public PU
  vimin
Details:
Notes: Minimum voltage regulator input limit (V<sub>IMIN</sub>).  Typical Value = -0.2.<br/>
Public PU
  vmmax
Details:
Notes: Maximum inner loop output (V<sub>MMax</sub>).  Typical Value = 1.<br/>
Public PU
  vmmin
Details:
Notes: Minimum inner loop output (V<sub>MMin</sub>).  Typical Value = 0.<br/>
Public PU
  vrmax
Details:
Notes: Maximum voltage regulator output (V<sub>RMAX</sub>).  Typical Value = 10.<br/>
Public PU
  vrmin
Details:
Notes: Minimum voltage regulator output (V<sub>RMIN</sub>).  Typical Value = -10.<br/>
Public PU
  xl
Details:
Notes: Reactance associated with potential source (X<sub>L</sub>).  Typical Value = 0.081.<br/>
Object Type Connection Direction Notes
ExcitationSystemDynamics Class Generalization To