DocumentCode :
1574021
Title :
Step size optimization based interior point algorithm: Applications and treatment of ill-conditioning in optimal power flow solutions
Author :
Bedriñana, Manfred F. ; Castro, Carlos A.
Author_Institution :
Power Syst. Dept., Univ. of Campinas, Sao Paulo, Brazil
fYear :
2009
Firstpage :
1
Lastpage :
8
Abstract :
In this work a step size optimization based nonlinear interior point (IP) algorithm is proposed for applications in power systems and treatment of ill-conditioned systems related to optimal power flow (OPF) solutions. Regarding the applications, the maximum loading point problem modeled as an optimization problem is used as OPF example. Also, it is used to describe the ill-conditioned OPF solutions, the sensitivity matrices obtained in the OPF process, and conditions related to singularity analysis. Simulations using a simple test system are carried out to evaluate its performance for solving ill-conditioned systems in comparison to conventional IP methods. The proposed method provides a better convergence path towards well-conditioned optimal solution; it also presents more information (step size, Lagrange multipliers, eigenvalue analysis) in case the optimal point is singular or infeasible, which is classified as ill-conditioned optimal solution.
Keywords :
load flow; optimisation; ill-conditioning; interior point algorithm; maximum loading point problem; optimal power flow solutions; sensitivity matrices; step size optimization; Linear programming; Load flow; Optimization methods; Power system analysis computing; Power system modeling; Power system planning; Power system stability; Power system transients; Quadratic programming; System testing; Power system optimization; ill-conditioned systems; interior point algorithms; maximum loading point; step size optimization;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Power & Energy Society General Meeting, 2009. PES '09. IEEE
Conference_Location :
Calgary, AB
ISSN :
1944-9925
Print_ISBN :
978-1-4244-4241-6
Type :
conf
DOI :
10.1109/PES.2009.5275163
Filename :
5275163
Link To Document :
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