PowerSystemStabilizerDynamics Class

<font color="#0f0f0f">Power system stabilizer</font> function block whose dynamic behaviour is described by <font color="#0f0f0f">a user-defined model.</font>

IEEE 421.5-2005 type PSS1A power system stabilizer model. PSS1A is the generalized form of a PSS with a single input signal. Reference: IEEE 1A 421.5-2005, 8.1.

IEEE 421.5-2005 type PSS2B power system stabilizer model. This stabilizer model is designed to represent a variety of dual-input stabilizers, which normally use combinations of power and speed or frequency to derive the stabilizing signal. Reference: IEEE 2B 421.5-2005, 8.2.

IEEE 421.5-2005 type PSS3B power system stabilizer model. The PSS model PSS3B has dual inputs of electrical power and rotor angular frequency deviation. The signals are used to derive an equivalent mechanical power signal. This model has 2 input signals. They have the following fixed types (expressed in terms of InputSignalKind values): the first one is of rotorAngleFrequencyDeviation type and the second one is of generatorElectricalPower type. Reference: IEEE 3B 421.5-2005, 8.3.

IEEE 421.5-2005 type PSS4B power system stabilizer. The PSS4B model represents a structure based on multiple working frequency bands. Three separate bands, respectively dedicated to the low-, intermediate- and high-frequency modes of oscillations, are used in this delta omega (speed input) PSS. There is an error in the in IEEE 421.5-2005 PSS4B model: the <i>Pe</i> input should read –<i>Pe</i>. This implies that the input <i>Pe</i> needs to be multiplied by -1. Reference: IEEE 4B 421.5-2005, 8.4. Parameter details: This model has 2 input signals. They have the following fixed types (expressed in terms of InputSignalKind values): the first one is of rotorAngleFrequencyDeviation type and the second one is of generatorElectricalPower type.

Italian PSS with three inputs (speed, frequency, power).

Single input power system stabilizer. It is a modified version in order to allow representation of various vendors' implementations on PSS type 1A.

Modified IEEE PSS2B. Extra lead/lag (or rate) block added at end (up to 4 lead/lags total).

PTI microprocessor-based stabilizer type 1.

Detailed Italian PSS.

Power system stabilizer typically associated with ExcELIN2 (though PssIEEE2B or Pss2B can also be used).

PTI microprocessor-based stabilizer type 1.

PTI microprocessor-based stabilizer type 3.

Power system stabilizer type RQB. This power system stabilizer is intended to be used together with excitation system type ExcRQB, which is primarily used in nuclear or thermal generating units.

Power sensitive stabilizer model.

Siemens^TM “H infinity” power system stabilizer with generator electrical power input. [Footnote: Siemens "H infinity" power system stabilizers are an example of suitable products available commercially. This information is given for the convenience of users of this document and does not constitute an endorsement by IEC of these products.]

Slovakian PSS with three inputs.

Power system stabilizer part of an ABB excitation system. [Footnote: ABB excitation systems are an example of suitable products available commercially. This information is given for the convenience of users of this document and does not constitute an endorsement by IEC of these products.]

Dual input power system stabilizer, based on IEEE type 2, with modified output limiter defined by WECC (Western Electricity Coordinating Council, USA).