Actas de congresos
A New Approach To Defining Corrective Control Actions In Case Of Infeasible Operating Situations
Registro en:
0780371399; 9780780371392
2001 Ieee Porto Power Tech Proceedings. , v. 3, n. , p. 46 - 51, 2001.
10.1109/PTC.2001.964880
2-s2.0-80053370065
Autor
Conceicao A.G.C.
Castro C.A.
Institución
Resumen
A method that deals with power systems in-feasible operating situations is proposed in this paper. In case these situations occur, appropriate corrective actions must be efficiently obtained and quickly implemented by (a) quantifying the systems unsolvability degree (UD), and (b) determining a corrective control strategy to pull the system back into the feasible operating region. UD is determined through the smallest distance between the infea-sible (unstable) operating point and the feasibility boundary in parameter (load) space. In this paper, control strategies can be obtained by either the proportionality method (PM) or the nonlinear programming based method (NLPM). Capacitor banks, tap changing transformers and load shedding are the usual controls available. The idea of local search of the available controls is used as a way of using the most effective controls and minimizing the computational burden. Simulations have been carried out for small to large systems, under contingency and heavy load situations. It is shown that the proposed method can be a very useful tool in operation planning studies, particularly for voltage stability analysis. © 2001 IEEE. 3
46 51 Overbye, T.J., A power flow measure for unsolvable cases (1994) IEEE Transactions on Power Systems, 9 (3) Overbye, T.J., Computation of a practical method to restore power flow solvability (1995) IEEE Transactions on Power Systems, 10 (1) Granville, S., Mello, J.C.O., Melo, A.C.G., Application of interior point methods to power flow unsolvability (1996) IEEE Transactions on Power Systems, 11 (2) Castro, C.A., Braz, L.M.C., A new approach to the polar Newton power flow using step size optimization (1997) Proc. of the 29th North American Power Symposium, , Laramie, WY, USA Dobson, I., Lu, L., Computing an optimum direction in control space to avoid saddle node bifurcation and voltage collapse in electric power systems (1992) IEEE Transactions on Automatic Control, 37 (10) Castro, C.A., Bose, A., Correctability of voltage violations in on-line contingency analysis (1994) IEEE Transactions on Power Systems, 9 (3) (1993) Working Group on Voltage Stability, pp. 75-86. , Suggested techniques for voltage stability analysis, 93TH0 620-5 PWR Murtagh, B.A., Saunders, M.A., (1987) Minos 5.1 Users Guide, , Stanford University Preris, L.L., Sasson, A.M., Investigation of the load-flow problem (1968) Proc. of the IEE, 115 (10) http://www.ee.wsishington.edu/reseEirch