Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/32565
Title: Decomposition-coordination interior point method and its application to multi-area optimal reactive power flow
Authors: Yan, W
Wen, L
Li, W
Chung, CY
Wong, KP
Keywords: Distributed calculations
Interior point method
Multi-area problems
Optimal reactive power flow
Power system decomposition
Issue Date: 2011
Publisher: Elsevier
Source: International journal of electrical power and energy systems, 2011, v. 33, no. 1, p. 55-60 How to cite?
Journal: International journal of electrical power and energy systems 
Abstract: A decomposition-coordination interior point method (DIPM) is presented and applied to the multi-area optimal reactive power flow (ORPF) problem in this paper. In the method, the area distributed ORPF problem is first formed by introducing duplicated border variables. Then the nonlinear primal dual interior point method (IPM) is directly applied to the distributed ORPF problem in which a Newton system with border-matrix-blocks is formulated. Finally the overall ORPF problem is solved in decomposition iterations with the Newton system being decoupled. The proposed DIPM inherits the good performance of the traditional IPM with a feature appropriate for distributed calculations among multiple areas. It can be easily extended to other distributed optimization problems of power systems. Numeric results of five IEEE Test Systems are demonstrated and comparisons are made with those obtained using the traditional auxiliary problem principle (APP) method. The results show that the DIPM for the multi-area OPRF problem requires less iterations and CPU time, has better stability in convergence, and reaches better optimality compared to the traditional auxiliary problem principle method.
URI: http://hdl.handle.net/10397/32565
ISSN: 0142-0615
DOI: 10.1016/j.ijepes.2010.08.004
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