: Public Class
Created: 02/03/2012 11:41:13 AM
Modified: 06/24/2012 03:35:13 PM
Project:
Advanced:
The class represents IEEE Std 421.5-2005 type ST7B model. This model is representative of static potential-source excitation systems. In this system, the AVR consists of a PI voltage regulator. A phase lead-lag filter in series allows introduction of a derivative function, typically used with brushless excitation systems. In that case, the regulator is of the PID type. In addition, the terminal voltage channel includes a phase lead-lag filter.  The AVR includes the appropriate inputs on its reference for overexcitation limiter (OEL1), underexcitation limiter (UEL), stator current limiter (SCL), and current compensator (DROOP). All these limitations, when they work at voltage reference level, keep the PSS (VS signal from Type PSS1A, PSS2A, or PSS2B) in operation. However, the UEL limitation can also be transferred to the high value (HV) gate acting on the output signal. In addition, the output signal passes through a low value (LV) gate for a ceiling overexcitation<br /></p><p>limiter (OEL2).<br /></p><p><br /></p><p>Reference: IEEE Standard 421.5-2005 Section 7.7. <br /></p>
Attribute
Public <a href="../../../EA1/EA66.htm">PU</a>
  kh

Details:
GUIDBasedOn={43BBB77E-26A1-4e2d-AEAE-B2F01F28ED3A}
Notes: High-value gate feedback gain (K<sub>H</sub>).
Public <a href="../../../EA1/EA66.htm">PU</a>
  kia

Details:
GUIDBasedOn={ACF9C97C-5D50-4b81-8B26-CF1DD7AA99B6}
Notes: Voltage regulator integral gain (K<sub>IA</sub>).
Public <a href="../../../EA1/EA66.htm">PU</a>
  kl

Details:
GUIDBasedOn={F00C0507-801C-4346-BC88-E47C43486F13}
Notes: Low-value gate feedback gain (K<sub>L</sub>).
Public <a href="../../../EA1/EA66.htm">PU</a>
  kpa

Details:
GUIDBasedOn={6BE8FA89-08B1-4fc5-8D60-D33ED957D03C}
Notes: Voltage regulator proportional gain (K<sub>PA</sub>).
Public <a href="../../../EA1/EA53.htm">Integer</a>
  oelin

Details:
GUIDBasedOn={90AE62BA-B286-4c1d-BD88-B61080B16E79}
Notes: OEL input selector (OELin)<br /></p><p>0 = no OEL input<br /></p><p>1 = add to Vref<br /></p><p>2 = input LV gate<br /></p><p>3 = output LV gate.<br /></p>
Public <a href="../../../EA1/EA71.htm">Seconds</a>
  tb

Details:
GUIDBasedOn={6CE3CCDC-54EC-4524-A0B8-AA531D2B17ED}
Notes: Regulator lag time constant (T<sub>B</sub>).
Public <a href="../../../EA1/EA71.htm">Seconds</a>
  tc

Details:
GUIDBasedOn={9605D374-AD1C-4e16-86B0-931F43978343}
Notes: Regulator lead time constant (T<sub>C</sub>).
Public <a href="../../../EA1/EA71.htm">Seconds</a>
  tf

Details:
GUIDBasedOn={A4BCD34E-FEAD-4b60-978C-F63BB4B10A72}
Notes: Excitation control system stabilizer time constant (T<sub>F</sub>).
Public <a href="../../../EA1/EA71.htm">Seconds</a>
  tg

Details:
GUIDBasedOn={55F1E500-AC63-4eeb-A40B-38836513342F}
Notes: Feedback time constant of inner loop field voltage regulator (T<sub>G</sub>).
Public <a href="../../../EA1/EA71.htm">Seconds</a>
  tia

Details:
GUIDBasedOn={609916C6-3026-44c1-ADBC-0E9D6DDDE3AC}
Notes: Feedback time constant (T<sub>IA</sub>).
Public <a href="../../../EA1/EA53.htm">Integer</a>
  uelin

Details:
GUIDBasedOn={C3050131-90A7-4129-A13A-D7FBC7AA02A7}
Notes: UEL input selector (UELin).<br /></p><p>0 = no UEL input<br /></p><p>1 = add to Vref<br /></p><p>2 = input HV gate <br /></p><p>3 = output HV gate.<br /></p>
Public <a href="../../../EA1/EA66.htm">PU</a>
  vmax

Details:
GUIDBasedOn={5FDFEECE-FE0F-483f-9383-72FA6A71199F}
Notes: Maximum voltage reference signal (V<sub>MAX</sub>).
Public <a href="../../../EA1/EA66.htm">PU</a>
  vmin

Details:
GUIDBasedOn={9C0D10A0-3BBC-4214-9C3E-4887B91D0B7C}
Notes: Minimum voltage reference signal (V<sub>MIN</sub>).
Public <a href="../../../EA1/EA66.htm">PU</a>
  vrmax

Details:
GUIDBasedOn={C995909E-5AB0-4bec-9C39-F326A5BCDB72}
Notes: Maximum voltage regulator output (V<sub>RMAX</sub>).
Public <a href="../../../EA1/EA66.htm">PU</a>
  vrmin

Details:
GUIDBasedOn={6E245220-20CD-4fec-ADF3-93653A6BFCCD}
Notes: Minimum voltage regulator output (V<sub>RMIN</sub>).
Tag Value
GUIDBasedOn {2855D47A-633A-4fdb-8372-F91955B62741}
Details:
 
Object Type Connection Notes
ExcitationSystemDynamics Class Generalization