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Description
The EXDC2 model was developed in line with the references [1] [2]. Figure 1 shows the architecture of the EXDC2 model [2]. EXDC2 is similar to DC2A, the regulator output limits are proportional to the machine terminal voltage.
Mask and Parameters
AVR parameters
Expanding the "EXDC2 diagram" displays the block diagram in the parameters window.
Name | Description | Unit |
Tr | Regulator input filter time constant | s |
Ka | Voltage regulator gain | - |
Ta | Regulator time constant | s |
Tb | Voltage regulator time constant | s |
Tc | Voltage regulator time constant | s |
Kf | Excitation control system stabilizer gain | - |
Tf1 | Excitation control system stabilizer time constant | s |
Vrmax | Maximum voltage regulator output | pu |
Vrmin | Minimum voltage regulator output | pu |
Exciter Parameters
Expanding the "Exciter diagram" displays the block diagram in the parameters window.
Name | Description | Unit | Variable = {Possible Values} |
Te | Exciter time constant | s | Te >= 0.04 |
Ke* | Exciter constant related to self-excited field | - | - |
Se1, Se2 | Exciter saturation factor at the corresponding Vex | pu | - |
Efd1, Efd2 | Exciter voltage for the exciter saturation function | pu | - |
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K_e=\frac{V_{Rmax}}{(10*Efd)-[S_e(Efd)]} |
Initial value tab
Name | Description | Unit | Variable = {Possible Values} |
Efd0 | Exciter output voltage initial value | pu | -- |
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| Name | Description | Unit |
Efd | Exciter output voltage | pu |
References
[1] I. C. Report, "Excitation System Models for Power System Stability Studies," in IEEE Transactions on Power Apparatus and Systems, vol. PAS-100, no. 2, pp. 494-509, Feb. 1981.
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