A Generalized Load Flow Method Including the Steady State Characteristic of Dynamic Devices

Continuous advances in the field of power electronics have resulted in new technologies connected to power systems. Examples are the different types of FACTS devices connected to the network to perform a number of control functions or to reinforce congested areas. However, conventional power flow methods are not capable of representing these new components with accuracy. This paper presents a generalized power flow method able to include the steady state characteristics of any dynamic device by using the same models considered for time domain simulation. The proposed method allows the monitoring of the performance of the dynamic devices when certain parameter is changed, such as the load level or the voltage setpoint of a given controller.

[1]  Gerard Doorman.  Optimal system security under capacity constrained conditions , 2001, 2001 IEEE Porto Power Tech Proceedings (Cat. No.01EX502).

[2]  B. Pal,et al.  Robust Control in Power Systems , 2005 .

[3]  W. Sauer,et al.  Post-contingency equilibrium analysis techniques for power systems , 2005, Proceedings of the 37th Annual North American Power Symposium, 2005..

[4]  F. Milano,et al.  An open source power system analysis toolbox , 2005, 2006 IEEE Power Engineering Society General Meeting.

[5]  Peter W. Sauer,et al.  Power System Dynamics and Stability , 1997 .

[6]  C.A. Canizares,et al.  Power flow and transient stability models of FACTS controllers for voltage and angle stability studies , 2000, 2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077).

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

[8]  A.R. Messina,et al.  Inclusion of higher order terms for small-signal (modal) analysis: committee report-task force on assessing the need to include higher order terms for small-signal (modal) analysis , 2005, IEEE Transactions on Power Systems.

[9]  Venkataramana Ajjarapu,et al.  Identification of voltage collapse through direct equilibrium tracing , 2000 .

[10]  T. Kumano,et al.  Nonlinear stability indexes of power swing oscillation using normal form analysis , 2006, IEEE Transactions on Power Systems.

[11]  N. Kshatriya,et al.  Improving the accuracy of normal form analysis , 2005, IEEE Transactions on Power Systems.