Modern power systems transients studies using dynamic phasor models

Modern power systems are high-order multivariable process operating in a constant changing environment. The transient analysis of such dynamic systems are therefore challenging because of their hybrid nature of the loads. The EMTP concept is universally accepted; however, due to the limitation of practical computer storage and computation time, the implementation of large complex power systems in EMTP is difficult. To overcome such problem, time domain dynamic phasor models has been applied based on the generalized averaging theory to analyze power electronic devices and network wide voltages and currents dynamic phasors. This paper deals with the modeling of modern power systems transients analysis using dynamic phasor models of DVR and investigated the performance of the dynamic phasor models through analysis and simulation platforms. The developed theoretical framework has been verified using Simulink dynamic system modeling software. It is found that the transient response of dynamic phasor model of the system closely hugged with the detail time domain EMTP simulation and faster numerical simulation with larger size steps through solving differential equation.

[1]  Ruihua Song,et al.  Analysis of balanced and unbalanced faults in power systems using dynamic phasors , 2002, Proceedings. International Conference on Power System Technology.

[2]  Aleksandar M. Stankovic,et al.  Modeling and analysis of single-phase induction machines with dynamic phasors , 1999 .

[3]  Aleksandar M. Stankovic,et al.  Modeling of UPFC Operation under Unbalanced Conditions with Dynamic Phasors , 2002, IEEE Power Engineering Review.

[4]  J Arrillaga,et al.  Computer Modelling of Electrical Power Systems: Arrillaga/Computer Modelling of Electrical Power Systems , 2001 .

[5]  P. Kundur,et al.  Power system stability and control , 1994 .

[6]  B. J. Harker,et al.  Computer Modelling of Electrical Power Systems , 1983 .

[7]  Aleksandar M. Stankovic,et al.  Analysis of asymmetrical faults in power systems using dynamic phasors , 2000 .

[8]  G. Tadmor.  On approximate phasor models in dissipative bilinear systems , 2002 .

[9]  R. Adapa,et al.  A new approach to dynamic analysis of AC networks incorporating detailed modeling of DC systems. I. Principles and implementation , 1988 .

[10]  J. M. Noworolski,et al.  Generalized averaging method for power conversion circuits , 1990, 21st Annual IEEE Conference on Power Electronics Specialists.

[11]  S. Sanders,et al.  Dynamic Phasors in Modeling and Analysis of Unbalanced Polyphase Ac Machines , 2002, IEEE Power Engineering Review.

[12]  S. Casoria,et al.  EMTP TACS-FORTRAN interface development for digital controls modeling , 1992 .

[13]  R. Adapa,et al.  A new approach to dynamic analysis of AC networks incorporating detailed modeling of DC systems. II. Application to interaction of DC and weak AC systems , 1988 .