Author(s):
Tófoli, Marielena Fonseca [UNESP] ; Soler, Edilaine Martins [UNESP] ; Balbo, Antonio Roberto [UNESP] ; Baptista, Edméa Cássia [UNESP] ; Nepomuceno, Leonardo [UNESP]
Date: 2018
Persistent ID: http://hdl.handle.net/11449/180143
Origin: Oasisbr
Subject(s): Interior/exterior-point methods; Mixed discrete nonlinear programming; Optimal reactive power flow; Interior/exterior-point methods; Interior/exterior-point methods; Mixed discrete nonlinear programming; Mixed discrete nonlinear programming; Optimal reactive power flow; Optimal reactive power flow
Description
Made available in DSpace on 2018-12-11T17:38:20Z (GMT). No. of bitstreams: 0 Previous issue date: 2018-01-01
Interior/exterior-point methods have been widely used for solving Optimal Reactive Power Flow problems (ORPF). However, the utilization of such methods becomes difficult when transformer taps and/or capacitor/reactor banks are more rigorously represented in the problem formulation by means of discrete control variables. This work investigates the solution of the ORPF problem when transformer tap ratios are modeled as discrete variables. The solution method proposed handles discrete variables by means of sinusoidal penalty function, while the penalized problems are solved by an exterior-point method. An inertia correction strategy is proposed in order to assure that only local minima are obtained for the penalized problems. New search directions are also investigated that combine predictor and corrector directions. Numerical simulations are performed involving the IEEE 14, 30 and 57 bus systems. The results show the efficiency of the proposed inertia correction strategy and also reveals that the proposed exterior-point method outperforms traditional interior-point methods in terms of the number of iterations and computation times.
Departamento de Engenharia Elétrica Faculdade de Engenharia Universidade Estadual Paulista (Unesp)
Departamento de Matemática Faculdade de Ciências Universidade Estadual Paulista (Unesp)
Departamento de Engenharia Elétrica Faculdade de Engenharia Universidade Estadual Paulista (Unesp)
Departamento de Matemática Faculdade de Ciências Universidade Estadual Paulista (Unesp)
