: Public Class
Created: 02/02/2012 09:42:36 PM
Modified: 06/24/2012 03:35:11 PM
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The class represents IEEE Std 421.5-2005 type AC8B model. This model represents a PID voltage regulator with either a brushless exciter or dc exciter. The AVR in this model consists of PID control, with separate constants for the proportional (<b>K</b><b><sub>PR</sub></b>), integral (<b>K</b><b><sub>IR</sub></b>), and derivative (<b>K</b><b><sub>DR</sub></b>) gains. The representation of the brushless exciter (<b>T</b><b><sub>E</sub></b>, <b>K</b><b><sub>E</sub></b>, <b>S</b><b><sub>E</sub></b>, <b>K</b><b><sub>C</sub></b>, <b>K</b><b><sub>D</sub></b>) is similar to the model Type AC2A. The Type AC8B model can be used to represent static voltage regulators applied to brushless excitation systems. Digitally based voltage regulators feeding dc rotating main exciters can be represented with the AC Type AC8B model with the parameters <b>K</b><b><sub>C</sub></b> and <b>K</b><b><sub>D</sub></b> set to 0.  For thyristor power stages fed from the generator terminals, the limits <b>V</b><b><sub>RMAX</sub></b> and <b>V</b><b><sub>RMIN</sub></b> should be a function of terminal voltage: <b>V</b><b><sub>T</sub></b> * <b>V</b><b><sub>RMAX</sub></b><sub> </sub>and <b>V</b><b><sub>T</sub></b> * <b>V</b><b><sub>RMIN</sub></b>.<br /></p><p>  <br /></p><p><br /></p><p>Reference: IEEE Standard 421.5-2005 Section 6.8. <br /></p>
Attribute
Public <a href="../../../EA1/EA66.htm">PU</a>
  ka

Details:
GUIDBasedOn={CAA94157-6749-427e-B6AF-B57A6D332CF5}
Notes: Voltage regulator gain (K<sub>A</sub>).
Public <a href="../../../EA1/EA66.htm">PU</a>
  kc

Details:
GUIDBasedOn={3749DD3D-805A-411c-B79B-77EFB1B4ACCD}
Notes: Rectifier loading factor proportional to commutating reactance (K<sub>C</sub>).
Public <a href="../../../EA1/EA66.htm">PU</a>
  kd

Details:
GUIDBasedOn={A4A2918E-C37B-4145-8E30-BC6B7A15C4B3}
Notes: Demagnetizing factor, a function of exciter alternator reactances (K<sub>D</sub>).
Public <a href="../../../EA1/EA66.htm">PU</a>
  kdr

Details:
GUIDBasedOn={6A82A570-1589-4b3a-A5A2-8567B3DE0E94}
Notes: Voltage regulator derivative gain (K<sub>DR</sub>).
Public <a href="../../../EA1/EA66.htm">PU</a>
  ke

Details:
GUIDBasedOn={D4ADF936-A070-43ff-BEF6-2282664134B2}
Notes: Exciter constant related to self-excited field (K<sub>E</sub>).
Public <a href="../../../EA1/EA66.htm">PU</a>
  kir

Details:
GUIDBasedOn={A61FB404-CC01-4438-BA0E-9BE20F5321A2}
Notes: Voltage regulator integral gain (K<sub>IR</sub>).
Public <a href="../../../EA1/EA66.htm">PU</a>
  kpr

Details:
GUIDBasedOn={0DBFB2BE-9C8B-4bea-B1C5-5AD06E7388DF}
Notes: Voltage regulator proportional gain (K<sub>PR</sub>).
Public <a href="../../../EA1/EA52.htm">Float</a>
  seve1

Details:
GUIDBasedOn={DBFC6806-485A-4944-9461-9327CEDD05A3}
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>]).
Public <a href="../../../EA1/EA52.htm">Float</a>
  seve2

Details:
GUIDBasedOn={9C345CC4-84DE-4110-9D73-9BE657FD1D4F}
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>]).
Public <a href="../../../EA1/EA71.htm">Seconds</a>
  ta

Details:
GUIDBasedOn={6D74D921-B4E8-4006-99F5-FEB3C8EDAB2C}
Notes: Voltage regulator time constant (T<sub>A</sub>).
Public <a href="../../../EA1/EA71.htm">Seconds</a>
  tdr

Details:
GUIDBasedOn={D90ACBA1-D501-4dcd-A475-50BF19B60C27}
Notes: Lag time constant (T<sub>DR</sub>).
Public <a href="../../../EA1/EA71.htm">Seconds</a>
  te

Details:
GUIDBasedOn={EF6D73D3-92EC-4a03-A027-490136D2846E}
Notes: Exciter time constant, integration rate associated with exciter control (T<sub>E</sub>).
Public <a href="../../../EA1/EA66.htm">PU</a>
  ve1

Details:
GUIDBasedOn={02542131-1EF9-4bf9-B481-13FA5C609353}
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>).
Public <a href="../../../EA1/EA66.htm">PU</a>
  ve2

Details:
GUIDBasedOn={47C123B5-0DD0-4fe8-8289-31BFFA7C643A}
Notes: Exciter alternator output voltages back of commutating reactance at which saturation is defined (V<sub>E2</sub>).
Public <a href="../../../EA1/EA66.htm">PU</a>
  vemin

Details:
GUIDBasedOn={DA1381CA-D93E-448d-8698-152232181C07}
Notes: Minimum exciter voltage output (V<sub>EMIN</sub>).
Public <a href="../../../EA1/EA66.htm">PU</a>
  vfemax

Details:
GUIDBasedOn={FA742534-A49C-4dfa-BF6E-587200C494FD}
Notes: Exciter field current limit reference (V<sub>FEMAX</sub>).
Public <a href="../../../EA1/EA66.htm">PU</a>
  vrmax

Details:
GUIDBasedOn={57AD8D66-84EF-4602-8927-8C1124C6F4AF}
Notes: Maximum voltage regulator output (V<sub>RMAX</sub>).
Public <a href="../../../EA1/EA66.htm">PU</a>
  vrmin

Details:
GUIDBasedOn={77018ED0-3248-4015-88E5-2A30B0A75C80}
Notes: Minimum voltage regulator output (V<sub>RMIN</sub>).
Tag Value
GUIDBasedOn {5A5BF11A-2D01-4ab7-9F3E-6F9D0EBA1054}
Details:
 
Object Type Connection Notes
ExcitationSystemDynamics Class Generalization