This component models IEEE type power system stabilizers.
The inputs to this model are per-unit speed w, synchronous machine terminal voltage Vt and discontinuous controller reference Vk. The output is Vs, which can be speed, terminal frequency, power or none.
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More: |
Power System Stabilizer Models PSCAD reference [4] |
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Name for Identification |
Text |
Optional text parameter for identification of the component. |
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PSS Status => 0-Initialize;1-Release |
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INTEGER |
Variable |
A variable name can be used. This variable can come from Output Variables for Controller Initialization section of the Synchronous Machine input parameters |
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DEC Status => 0-Initialize;1-Release |
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INTEGER |
Variable |
A variable name can be used. This variable can come from Output Variables for Controller Initialization section of the Synchronous Machine input parameters |
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Stabilizer? |
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Choice |
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Select None, PSS1A, PSS2B, PSS3B or PSS4B |
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Select the Appropriate IEEE Std 421.5 |
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Choice |
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Select 1992 or 2005. |
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Discontinuous Excitation Controller? |
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Choice |
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Select None, DEC1A, DEC2A, or DEC3A |
PSS1A: Power System Stabilizer DataPSS1A: Power System Stabilizer Data
NOTE: See Stabilizer Transfer Functions for more details.
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Input Signal |
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Choice |
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Select None, Frequency, Speed or Power |
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Transducer Time Constant (T6) |
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REAL |
Constant |
Enter a value for the transducer time constant [s] |
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PSS gain (Ks) |
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REAL |
Constant |
Enter the PSS gain [pu] |
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Washout Time Constant (T5) |
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REAL |
Constant |
Enter a value for the washout time constant [s] |
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Filter Constant (A1) |
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REAL |
Constant |
Enter the filter constant value |
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Filter Constant (A2) |
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REAL |
Constant |
Enter the filter constant value |
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First Lead Time Constant (T1) |
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REAL |
Constant |
Enter a value for the first lead time constant [s] |
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First Lag Time Constant (T2) |
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REAL |
Constant |
Enter a value for the first lag time constant [s] |
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Second Lead Time Constant (T3) |
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REAL |
Constant |
Enter a value for the second lead time constant [s] |
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Second Lag Time Constant (T4) |
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REAL |
Constant |
Enter a value for the second lag time constant [s] |
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PSS Output Max. Limit (VSTMAX) |
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REAL |
Constant |
Enter a value for PSS output maximum limit [pu] |
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PSS Output Min. Limit (VSTMIN) |
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REAL |
Constant |
Enter a value for PSS output minimum limit [pu] |
PSS2B: PSS Signal DataPSS2B: PSS Signal Data
NOTE: See Stabilizer Transfer Functions for more details.
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First Input Signal |
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Choice |
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Select None, Frequency, Speed or Power |
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First Signal Max. Input (VSI1MAX) |
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REAL |
Constant |
Enter the first signal maximum input [pu] |
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First Signal Min. Input (VSI1MIN) |
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REAL |
Constant |
Enter the first signal minimum input [pu] |
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First Signal First Washout Time (TW1) |
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REAL |
Constant |
Enter a value for the first signal, first washout time [s] |
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First Signal Second Washout Time (TW2) |
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REAL |
Constant |
Enter a value for the first signal, second washout time [s] |
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First Signal Transducer Time Const. (T6) |
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REAL |
Constant |
Enter a value for the first signal transducer time constant [s] |
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Second Input Signal |
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Choice |
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Select None, Frequency, Speed or Power |
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Second Signal Max. Input (VSI2MAX) |
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REAL |
Constant |
Enter the second signal maximum input [pu] |
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Second Signal Min. Input (VSI2MIN) |
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REAL |
Constant |
Enter the second signal minimum input [pu] |
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Second Signal First Washout Time (TW3) |
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REAL |
Constant |
Enter a value for the second signal, first washout time [s] |
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Second Signal Second Washout Time (TW4) |
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REAL |
Constant |
Enter a value for the second signal, second washout time [s] |
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Second Signal Gain (Ks2) |
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REAL |
Constant |
Enter the second signal gain [pu] |
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Second Signal Transducer Time Const. (T7) |
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REAL |
Constant |
Enter a value for the second signal transducer time constant [s] |
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Second Signal Second Gain (Ks3) |
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REAL |
Constant |
Enter the second signal second gain [pu] |
PSS2B: PSS Lead-Lag DataPSS2B: PSS Lead-Lag Data
NOTE: See Stabilizer Transfer Functions for more details.
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Filter Lead Time Constant (T8) |
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REAL |
Constant |
Enter a value for the filter lead time constant [s] |
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Filter Lag Time Constant (T9) |
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REAL |
Constant |
Enter a value for the filter lag time constant [s] |
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Integer Filter Constant (N) |
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INTEGER |
Constant |
Enter a value for the integer filter constant |
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Integer Filter Constant (M) |
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INTEGER |
Constant |
Enter a value for the integer filter constant |
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PSS Gain (Ks1) |
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REAL |
Constant |
Enter the PSS gain [pu] |
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First Lead Time Constant (T1) |
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REAL |
Constant |
Enter a value for the first lead time constant [s] |
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First Lag Time Constant (T2) |
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REAL |
Constant |
Enter a value for the first lag time constant [s] |
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Second Lead Time Constant (T3) |
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REAL |
Constant |
Enter a value for the second lead time constant [s] |
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Second Lag Time Constant (T4) |
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REAL |
Constant |
Enter a value for the second lag time constant [s] |
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Third Lead Time Constant (T10) |
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REAL |
Constant |
Enter a value for the third lead time constant [s] |
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Third Lag Time Constant (T5) |
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REAL |
Constant |
Enter a value for the third lag time constant [s] |
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PSS Output Max. Limit (VSTMAX) |
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REAL |
Constant |
Enter the first PSS output maximum limit [pu] |
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PSS Output Min. Limit (VSTMIN) |
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REAL |
Constant |
Enter the PSS output minimum limit [pu] |
PSS3B: Power System Stabilizer DataPSS3B: Power System Stabilizer Data
NOTE: See Stabilizer Transfer Functions for more details.
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Input Signal |
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Choice |
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Select None, Frequency, Speed or Power |
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First Transducer Time Constant (T1) |
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REAL |
Constant |
Enter a value for the first transducer time constant [s] |
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First Signal Washout Time Constant (Tw1) |
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REAL |
Constant |
Enter a value for the first signal washout time constant [s] |
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First Input Signal Gain (Ks1) |
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REAL |
Constant |
Enter the first input signal gain [pu] |
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Second Input Signal |
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Choice |
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Select None, Frequency, Speed or Power |
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Second Transducer Time Constant (T2) |
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REAL |
Constant |
Enter a value for the second transducer time constant [s] |
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Second Signal Washout Time Constant (Tw2) |
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REAL |
Constant |
Enter a value for the second signal washout time constant [s] |
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Second Input Signal Gain (Ks2) |
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REAL |
Constant |
Enter the second input signal gain [pu] |
PSS3B: Power System Stabilizer: Common PathPSS3B: Power System Stabilizer: Common Path
NOTE: See Stabilizer Transfer Functions for more details.
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Washout Time Constant (Tw3) |
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REAL |
Constant |
Enter a value for the washout time constant [s] |
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Filter Coefficient (A1) |
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REAL |
Constant |
Enter a value for the filter coefficient [s] |
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Filter Coefficient (A2) |
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REAL |
Constant |
Enter a value for the filter coefficient [s] |
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Filter Coefficient (A3) |
REAL |
Constant |
Enter a value for the filter coefficient [s] |
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Filter Coefficient (A4) |
REAL |
Constant |
Enter a value for the filter coefficient [s] |
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Filter Coefficient (A5) |
REAL |
Constant |
Enter a value for the filter coefficient [s] |
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Filter Coefficient (A6) |
REAL |
Constant |
Enter a value for the filter coefficient [s] |
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Filter Coefficient (A7) |
REAL |
Constant |
Enter a value for the filter coefficient [s] |
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Filter Coefficient (A8) |
REAL |
Constant |
Enter a value for the filter coefficient [s] |
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PSS Output Max. Limit (VSTMAX) |
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REAL |
Constant |
Enter a value for the PSS output maximum limit [pu] |
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PSS Output Min. Limit (VSTMIN) |
REAL |
Constant |
Enter a value for the PSS output minimum limit [pu] |
PSS4B [1992]: Power System Stabilizer DataPSS4B [1992]: Power System Stabilizer Data
NOTE: See Stabilizer Transfer Functions for more details.
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First Input Signal |
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Choice |
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Select None, Frequency, Speed or Power |
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First Transducer Time Constant (T1) |
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REAL |
Constant |
Enter a value for the first transducer time constant [s] |
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First Signal Washout Time Constant (T2) |
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REAL |
Constant |
Enter a value for the first signal washout time constant [s] |
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First Signal Gain (Ks1) |
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REAL |
Constant |
Enter the first signal gain [pu] |
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Second Input Signal |
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Choice |
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Select None, Frequency, Speed or Power |
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Second Transducer Time Constant (T3) |
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REAL |
Constant |
Enter a value for the second transducer time constant [s] |
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Second Signal Washout Time Constant (T4) |
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REAL |
Constant |
Enter a value for the second signal washout time constant [s] |
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Second Signal Gain (Ks2) |
REAL |
Constant |
Enter the second signal gain [pu] |
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System Start-up Time Constant (T0) |
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REAL |
Constant |
Enter a value for the system start-up time constant [s] |
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Synchronous Machine Inertia Constant (2H) |
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REAL |
Constant |
Enter a value for the synchronous machine inertia constant [s] |
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PSS Output Max. Limit (VSTMAX) |
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REAL |
Constant |
Enter a value for PSS output maximum limit [pu] |
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PSS Output Min. Limit (VSTMIN) |
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REAL |
Constant |
Enter a value for PSS output minimum limit [pu] |
PSS4B [2005]: Power System Stabilizer: Common DataPSS4B [2005]: Power System Stabilizer: Common Data
NOTE: See Stabilizer Transfer Functions for more details.
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Inside Notch Filters? |
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Choice |
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Select Yes or No |
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Inertia Constant |
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REAL |
Constant |
Enter a value for inertia constant [s] |
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PSS Output Max. Limit (VSTMAX) |
REAL |
Constant |
Enter a value for the PSS output maximum limit [pu] |
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PSS Output Min. Limit (VSTMIN) |
REAL |
Constant |
Enter a value for the PSS output minimum limit [pu] |
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Tuned Frequency of the Notch Filter (WNI) |
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REAL |
Constant |
Enter a value for the tuned frequency of the notch filter [Hz] |
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3dB Bandwidth of the Notch Filter (BWI) |
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REAL |
Constant |
Enter a value for the 3dB bandwidth of the notch filter [Hz] |
NOTE: See Stabilizer Transfer Functions for more details.
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Gain in Positive Branch (KL1) |
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REAL |
Constant |
[pu] |
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Proportional Gain in First Block (KL11) |
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REAL |
Constant |
[pu] |
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Derivative Time Constant in First Block (TL1) |
REAL |
Constant |
[s] |
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Lag Time Constant in First Block (TL2) |
REAL |
Constant |
[s] |
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Lead Time Constant in Second Block (TL3) |
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REAL |
Constant |
[s] |
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Lag Time Constant in Second Block (TL4) |
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REAL |
Constant |
[s] |
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Lead Time Constant in Third Block (TL5) |
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REAL |
Constant |
[s] |
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Lag Time Constant in Third Block (TL6) |
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REAL |
Constant |
[s] |
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Gain in Negative Branch (KL2) |
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REAL |
Constant |
[pu] |
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Proportional Gain in First Block (KL17) |
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REAL |
Constant |
[pu] |
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Derivative Time Constant in First Block (TL7) |
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REAL |
Constant |
[s] |
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Lag Time Constant in First Block (TL8) |
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REAL |
Constant |
[s] |
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Lead Time Constant in Second Block (TL9) |
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REAL |
Constant |
[s] |
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Lag Time Constant in Second Block (TL10) |
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REAL |
Constant |
[s] |
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Lead Time Constant in Third Block (TL11) |
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REAL |
Constant |
[s] |
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Lag Time Constant in Third Block (TL12) |
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REAL |
Constant |
[s] |
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Gain in Common Branch (KL) |
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REAL |
Constant |
[pu] |
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Maximum Limit (VLMAX) |
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REAL |
Constant |
[pu] |
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Minimum Limit (VLMIN) |
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REAL |
Constant |
[pu] |
NOTE: See Stabilizer Transfer Functions for more details.
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Gain in Positive Branch (KI1) |
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REAL |
Constant |
[pu] |
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Proportional Gain in First Block (KI11) |
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REAL |
Constant |
[pu] |
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Derivative Time Constant in First Block (TI1) |
REAL |
Constant |
[s] |
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Lag Time Constant in First Block (TI2) |
REAL |
Constant |
[s] |
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Lead Time Constant in Second Block (TI3) |
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REAL |
Constant |
[s] |
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Lag Time Constant in Second Block (TI4) |
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REAL |
Constant |
[s] |
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Lead Time Constant in Third Block (TI5) |
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REAL |
Constant |
[s] |
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Lag Time Constant in Third Block (TI6) |
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REAL |
Constant |
[s] |
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Gain in Negative Branch (KI2) |
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REAL |
Constant |
[pu] |
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Proportional Gain in First Block (KI17) |
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REAL |
Constant |
[pu] |
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Derivative Time Constant in First Block (TI7) |
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REAL |
Constant |
[s] |
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Lag Time Constant in First Block (TI8) |
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REAL |
Constant |
[s] |
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Lead Time Constant in Second Block (TI9) |
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REAL |
Constant |
[s] |
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Lag Time Constant in Second Block (TI10) |
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REAL |
Constant |
[s] |
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Lead Time Constant in Third Block (TI11) |
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REAL |
Constant |
[s] |
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Lag Time Constant in Third Block (TI12) |
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REAL |
Constant |
[s] |
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Gain in Common Branch (KI) |
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REAL |
Constant |
[pu] |
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Maximum Limit (VIMAX) |
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REAL |
Constant |
[pu] |
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Minimum Limit (VIMIN) |
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REAL |
Constant |
[pu] |
NOTE: See Stabilizer Transfer Functions for more details.
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Gain in Positive Branch (KH1) |
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REAL |
Constant |
[pu] |
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Proportional Gain in First Block (KH11) |
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REAL |
Constant |
[pu] |
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Derivative Time Constant in First Block (TH1) |
REAL |
Constant |
[s] |
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Lag Time Constant in First Block (TH2) |
REAL |
Constant |
[s] |
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Lead Time Constant in Second Block (TH3) |
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REAL |
Constant |
[s] |
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Lag Time Constant in Second Block (TH4) |
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REAL |
Constant |
[s] |
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Lead Time Constant in Third Block (TH5) |
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REAL |
Constant |
[s] |
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Lag Time Constant in Third Block (TH6) |
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REAL |
Constant |
[s] |
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Gain in Negative Branch (KH2) |
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REAL |
Constant |
[pu] |
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Proportional Gain in First Block (KH17) |
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REAL |
Constant |
[pu] |
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Derivative Time Constant in First Block (TH7) |
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REAL |
Constant |
[s] |
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Lag Time Constant in First Block (TH8) |
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REAL |
Constant |
[s] |
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Lead Time Constant in Second Block (TH9) |
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REAL |
Constant |
[s] |
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Lag Time Constant in Second Block (TH10) |
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REAL |
Constant |
[s] |
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Lead Time Constant in Third Block (TH11) |
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REAL |
Constant |
[s] |
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Lag Time Constant in Third Block (TH12) |
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REAL |
Constant |
[s] |
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Gain in Common Branch (KH) |
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REAL |
Constant |
[pu] |
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Maximum Limit (VHMAX) |
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REAL |
Constant |
[pu] |
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Minimum Limit (VHMIN) |
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REAL |
Constant |
[pu] |
NOTE: See Stabilizer Transfer Functions for more details.
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DEC Washout Time Constant (Tw5) |
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REAL |
Constant |
Enter a value for the DEC washout time constant [s] |
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Terminal Voltage Level Ref. (VTC) |
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REAL |
Constant |
Enter a value for the terminal voltage level reference [pu] |
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Regulator Voltage Reference (VAL) |
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REAL |
Constant |
Enter a value for the regulator voltage reference [pu] |
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Speed Change Reference (Esc) |
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REAL |
Constant |
Enter a value for the speed change reference [pu] |
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Terminal Voltage Ref. (VTLMT) |
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REAL |
Constant |
Enter a value for the terminal voltage reference [pu] |
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Terminal V Max. Dev. Over Reference |
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REAL |
Constant |
Enter a value for the terminal voltage maximum deviation over the reference [pu] |
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Terminal V Min. Dev. Over Reference |
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REAL |
Constant |
Enter a value for the terminal voltage minimum deviation over the reference [pu] |
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Terminal Voltage Limiter gain (KETL) |
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REAL |
Constant |
Enter a value for the terminal voltage limiter gain [pu] |
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Voltage Limiter Lead Time (TL1) |
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REAL |
Constant |
Enter a value for the voltage limiter lead time [s] |
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Voltage Limiter Lag Time (TL2) |
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REAL |
Constant |
Enter a value for the voltage limiter lag time [s] |
DEC1A: Discontinuous Excitation Controller DataDEC1A: Discontinuous Excitation Controller Data
NOTE: See Stabilizer Transfer Functions for more details.
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Bang-Bang Cont'lr Max. Limit (VTM) |
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REAL |
Constant |
Enter a value for the bang-bang controller maximum limit [pu] |
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Bang-Bang Cont'lr Min. Limit (VTN) |
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REAL |
Constant |
Enter a value for the bang-bang controller minimum limit [pu] |
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Reset Delay Time (TD) |
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REAL |
Constant |
Enter a value for the reset delay time [s] |
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Integrator Gain (KAN) |
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REAL |
Constant |
Enter a value for the integrator gain [pu] |
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Integrator Time Constant (TAN) |
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REAL |
Constant |
Enter a value for the integrator time constant [s] |
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Integrator Maximum Limit (VANMAX) |
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REAL |
Constant |
Enter a value for the integrator maximum limit [pu] |
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PSS Plus DEC Max. Limit (VSMAX) |
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REAL |
Constant |
Enter a value for the combined PSS and DEC maximum limit [pu] |
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PSS Plus DEC Min. Limit (VSMIN) |
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REAL |
Constant |
Enter a value for the combined PSS and DEC minimum limit [pu] |
DEC2A: Discontinuous Excitation Controller DataDEC2A: Discontinuous Excitation Controller Data
NOTE: See Stabilizer Transfer Functions for more details.
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Trigger Signal Amplitude (Vk) |
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REAL |
Constant |
Enter a value for the trigger signal amplitude [pu] |
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Controller Time Constant (TD1) |
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REAL |
Constant |
Enter a value for the controller time constant [s] |
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DEC Washout Time Constant (TD2) |
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REAL |
Constant |
Enter a value for the DEC washout time constant [s] |
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Terminal Voltage Max. Limit (VTLIMIT) |
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REAL |
Constant |
Enter a value for the terminal voltage maximum limit [pu] |
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DEC Maximum Limit |
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REAL |
Constant |
Enter a value for the DEC maximum limit [pu] |
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DEC Minimum Limit |
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REAL |
Constant |
Enter a value for the DEC minimum limit [pu] |
DEC3A: Discontinuous Excitation Controller DataDEC3A: Discontinuous Excitation Controller Data
NOTE: See Stabilizer Transfer Functions for more details.
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Controller Input Reference (VTMIN) |
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REAL |
Constant |
Enter a value for the controller input reference [pu] |
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Reset Time Delay (TDR) |
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REAL |
Constant |
Enter a value for the reset time delay [s] |