Actas de congresos
A Generalized Load Flow Method To Assess Steady-state Equilibrium Of Power Systems
Ieee Pes Powerafrica 2007 Conference And Exposition, Powerafrica. , v. , n. , p. - , 2007.
Da Silva L.C.P.
Da Costa V.F.
Continuous advances in terms of the capability of modern computers allow the development of power systems analysis tools that takes into consideration aspects that are usually neglected for power flow calculation. Examples are detailed models for generators, turbines, speed and voltage controllers that are usually over-simplified, Flexible AC Transmission Systems devices, induction generators, dynamic loads, etc. 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 method solves simultaneously the power system set of algebraic and differential equations at the steady-state equilibrium, allowing monitoring the dynamic devices performance when certain parameter is changed, such as the load level or the voltage setpoint of a given controller, or after the occurrence of contingencies. Simulations in a 16-machines/69-buses test system show that the proposed method provides the system post-disturbance equilibrium point with the high degree of accuracy of time domain simulation and the low computational requirements of conventional power flow. ©2007 IEEE.Stott, B., ani, O., Alsac, Fast Decoupled Power Flaw (1974) IEEE Trans. PAS, 93, pp. 859-869Sarchez-Gasca, J.J., Vittal, V., Gibbard, M.J., Messina, A.R., Vowles, D.J., Liu, S., Annakkage, U.D., Inclusion of Higher Older 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, 20 (4), pp. 1886-1904. , DecKshatriya, N., Annakkage, U.D., Gole, A.M., aid, I., Fernando, T., Improving the Accuracy of Normal Form Analysis (2005) IEEE Transactions on Power Systems, 20 (1), pp. 268-293. , FebAmano, H., Knmano, T., Inoue, T., Nonlinear Stability Indexes of Power Swing Oscillation Using Normal Form Analysis (2006) IEEE Transactions on Power Systems, 21 (2), pp. 825-834. , MayYeu, R.H., Sauer, P.W., Post-Contingency Equilibrium Analysis Techniques for Power Systems Proc. 2005 of the 37th Annual North Amencan Power Symposium, pp. 429-433Sauer, P.W., Post-Contingency Equilibrium Analysis of Power Systerns inProc. 2002 of the 35th Hawaii International Conference on System Sciences, pp. 820-823Kundur, P., (1994) Power System Stability and Control, , New York: McGraw-HillSauer, P.W., Pai, M.A., (1998) Power System Dynamics and Stability. Upper River, , NJ:Prentice HallFeng, Z., Ajjarapu, V., Long, B., Ientification of Voltage Collapse Through Direct Equilibrium Tracing (2000) IEEE Trans. Power Systems, 15 (1), pp. 342-349. , FebMikro, F., An Open Source Power System Analysis Tool Box (2005) IEEE Trans. Power Systems, 20 (3), pp. 1199-1206. , AugPal, B., Chaudhuni, B., (2005) Robust Control in Power Systems, , New York: Springerhttp://www.power.uwaterloo.ca/∼fmilanodownloads.htm, F. Milano, 2006, December 14, PSAT, Power System Analysis ToolboxDocumentation for PSAT version 2.00 B, Online, Available