Title :
Optimal power flow: a tool for managing the transmission congestion
Author :
De Souza, Alessandra M. ; De Sousa, Vanusa A. ; da Costa, Geraldo R M
Author_Institution :
Dept. of Electr. Eng., Sao Paulo Univ., Brazil
Abstract :
This paper presents a study of the Lagrange multipliers in congested transmission systems. The Lagrange multiplier indicates the sensitivity of constraints related with the objective function. The Lagrange multipliers are obtained via optimal power flow with transmission constraints. Optimal power flow problem is solved by primal-dual logarithmic barrier method. The results obtained in networks (53 and 118 bus) show that the proposed technique is able to improve system planning.
Keywords :
load dispatching; power transmission planning; Lagrange multiplier; optimal power flow; primal-dual logarithmic barrier method; system planning; transmission congestion; Convergence; Energy management; Information analysis; Lagrangian functions; Load flow; Power engineering and energy; Power system management; Power system planning; Propagation losses; Reactive power;
Conference_Titel :
Power Engineering Society General Meeting, 2004. IEEE
Print_ISBN :
0-7803-8465-2
DOI :
10.1109/PES.2004.1372939
