Impact of Time Delays on Power System Stability

Author

Milano, Federico ; Anghel, Marian

Author_Institution

Dept. of Electr. Eng., Univ. of Castilla-La Mancha, Ciudad Real, Spain

Volume

59

Issue

4

fYear

2012

fDate

4/1/2012 12:00:00 AM

Firstpage

889

Lastpage

900

Abstract

The paper describes the impact of time-delays on small-signal angle stability of power systems. With this aim, the paper presents a power system model based on delay differential algebraic equations (DDAE) and describes a general technique for computing the spectrum of DDAE. The paper focuses in particular on delays due to the terminal voltage measurements and transducers of automatic voltage regulators and power system stabilizers of synchronous machines. The proposed technique is applied to a benchmark system, namely the IEEE 14-bus test system, as well as to a real-world system. Time domain simulations are also presented to confirm the results of the DDAE spectral analysis.

Keywords

delays; differential algebraic equations; power system stability; spectral analysis; synchronous machines; time-domain analysis; transducers; voltage measurement; voltage regulators; DDAE spectral analysis; IEEE 14-bus test system; automatic voltage regulators; benchmark system; delay differential algebraic equations; general technique; power system model; power system stability; real-world system; small-signal angle stability; synchronous machines; terminal voltage measurements; time delays; time domain simulations; transducers; Circuit stability; Delay; Equations; Mathematical model; Numerical stability; Power system stability; Stability analysis; Automatic voltage regulator (AVR); Hopf bifurcation (HB); delay differential algebraic equations (DDAE); limit cycle; power system stabilizer (PSS); small-signal stability; time delay;

fLanguage

English

Journal_Title

Circuits and Systems I: Regular Papers, IEEE Transactions on

Publisher

ieee

ISSN

1549-8328

Type

jour

DOI

10.1109/TCSI.2011.2169744

Filename

6062658