Journal ArticleDOI
Dynamic Stability of Long Transmission Systems with Static Compensators and Synchronous Machines
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In this article, the static compensator and the excitation system control parameters are chosen in a coordinated manner from the stability limit plots, the extension of stability limits with a Static Compensator are quantised, later a second compensator is included for improving the system performance.Abstract:
This paper deals with the dynamic stability of long distance a.c. transmission systems operating at above 1 surge impedance loading and compensated entirely by automatically controlled shunt inductance device referred to as Static Compensators. Generalised system equations in the form X = AX, with a careful choice of state variables are developed via the subsystem concept and the eigenvalue technique used to establish the stability limits. The static compensator and the excitation system control parameters are chosen in a coordinated manner from the stability limit plots, the extension of stability limits with a Static Compensator are quantised, later a second compensator is included for improving the system performance and interaction studies.read more
Citations
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Journal ArticleDOI
Dynamic Stability of Static Compensator - Synchronous Generator Combination
TL;DR: An automatic static compensator shunt connected at the synchronous generator terminals using an appropriate control strategy is shown to yield superior dynamic stability limits than that of a conventional or a dual excited machine.
Journal ArticleDOI
Design of a static VAR compensator using model reference adaptive control
Yuan-Yih Hsu,Chin-Hsing Cheng +1 more
TL;DR: In this paper, a static VAR compensator (SVC) is proposed to improve generator damping without deterioration in the voltage profile under severe disturbance conditions, and an adaptive controller using model reference adaptive control (MRAC) is also developed.
Journal ArticleDOI
Steady State Stability and Subsynchronous Resonance of Shunt Capacitor Compensated AC Transmission Lines
TL;DR: In this paper, it is shown that the fifth quadrant operation of the shunt capacitor compensated transmission line is dynamically stable, both with and without the voltage stabilizer, and that subsynchronous resonance is unavoidable when operating beyond the second quadrant.
Journal ArticleDOI
Simple robust adaptive control of static VAR compensator
Jan Machowski,D. Nelles +1 more
TL;DR: In this paper, a study of power system transient stability enhancement through effective use of static VAR compensator is presented, where the optimal state-variable control can be approximately realized as a simple closed-loop control based on locally measurable electric quantities.
Journal ArticleDOI
Concepts of static var system control for enhancing power transfer in long transmission lines
K.R. Padiyar,Rajiv K. Varma +1 more
TL;DR: In this paper, the influence of different levels of complexity in modelling various constituent subsystems on the dynamic stability of power systems compensated by static var systems (SVS) operating on pure voltage control is discussed.
References
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Journal ArticleDOI
Dynamic Stability Calculations for an Arbitrary Number of Interconnected Synchronous Machines
TL;DR: In this paper, the authors describe the small signal performance of a multi-machine synchronous power system by a set of differential equations of the form [x] = [A] [x], allowing standard multivariable control theory to be used in dynamic stability studies.
Journal ArticleDOI
Matrix analysis of dynamic stability in synchronous multimachine systems
TL;DR: In this paper, a set of general coefficients related to the well known Heffron and Phillips constants is derived by means of matrix algebra, which allows complex impedance terms to be included in the analysis.
Journal ArticleDOI
Eigenvalue sensitivities of power systems including network and shaft dynamics
TL;DR: In this paper, a digital computer method for obtaining eigenvalue sensitivities of interconnected power systems is presented, especially suited to the analysis of detailed modelled synchronous machine systems where shaft and stator-network dynamic effects are significant.
Journal ArticleDOI
Effect of excitation regulation on synchronous-machine stability
L.J. Jacovides,B. Adkins +1 more
TL;DR: In this article, a detailed study of the effect of a voltage regulator on the stability of an alternator connected through a reactance to an infinite bus is performed, and the stability is analyzed by means of Nyquist loci calculated for the transfer functions of alternator and regulator.