PSS3C

Power system stabilizer

PSS3C

generic

Opensource

CIM model

RMS

phasor

MRL4

Single phase

PssIEEE3C

IEEE

dynawo

#106

Author

Erwan Guichard (DPS for RTE)

Published

May 4, 2024

PSS3C model

This article is incomplete, some sections must be written.

Context

This power system stabilizer model first appeared in the IEEE Std 421.5-2016 [1]. It has been reproduced identically in the IEC 61970-302:2024 version [2]. In the previous standard version (2005), its predecessor model was called PSS3B. Compared to PSS3B, PSS3C has an additional output logic.

Model use, assumptions, validity domain and limitations

To be completed

Model inputs and output

The input variables are :

Variable	Description	Units
\(\omega_{pu}\)	measured angular frequency	\(pu\) (base \(\omega_{Nom}\))
\(\omega_{RefPu}\)	reference angular frequency	\(pu\) (base \(\omega_{Nom}\))
\(P_{GenPu}\)	active power	\(pu\) (base \(S_{nRef}\))

The output signal is \(VPssPu\) in \(pu\) (base \(U_{Nom}\)).

Model parameters

Parameter	Description	Units
A1	First numerator coefficient of first notch filter	s
\(A2\)	Second numerator coefficient of first notch filter	\(s ^ 2\)
\(A3\)	First denominator coefficient of first notch filter	\(s\)
\(A4\)	Second denominator coefficient of first notch filter	\(s ^ 2\)
\(A5\)	First numerator coefficient of second notch filter	\(s\)
\(A6\)	Second numerator coefficient of second notch filter	\(s ^ 2\)
\(A7\)	First denominator coefficient of second notch filter	\(s\)
\(A8\)	Second denominator coefficient of second notch filter	\(s ^ 2\)
\(K_{\Omega}\)	Coefficient applied to angular frequency	-
\(K_{\Omega Ref}\)	Coefficient applied to reference angular frequency	-
\(K_{s1}\)	Gain of active power branch	\(pu\)
\(K_{s2}\)	Gain of angular frequency branch	\(pu\)
\(t1\)	Transducer time constant (active power branch)	\(s\)
\(t2\)	Transducer time constant (angular frequency branch)	\(s\)
\(tW1\)	Washout time constant (active power branch)	\(s\)
\(tW2\)	Washout time constant (angular frequency branch)	\(s\)
\(tW3\)	Washout time constant (main branch)	\(s\)
\(VPssMaxPu\)	Maximum voltage output of power system stabilizer	\(pu\) (base \(U_{Nom}\))
\(VPssMinPu\)	Minimum voltage output of power system stabilizer	\(pu\) (base \(U_{Nom}\))
\(S_{Nom}\)	Nominal apparent power	\(MVA\)