Efficient secure AC OPF for network generation capacity assessment

C. J. Dent, L. F. Ochoa, Gareth Harrison, J. W. Bialek

Research output: Contribution to journalArticlepeer-review

Abstract

This paper presents a novel method for determining the capacity of a network to accommodate new generation under network security constraints. The assessment is performed by maximising the total generation capacity in an optimal power flow model; this is solved by gradually adding limited numbers
of line outage contingencies, until a solution to the complete problem is obtained. The limit on the number of contingencies added is key to the method’s efficiency, as it reduces the size of the optimisation problems encountered. Moreover, varying this limit on contingencies added provides a simple and highly efficient means of searching for multiple local optima of the nonlinear optimisation problem. The method has been tested on a modified version of the highly-meshed IEEE Reliability Test System with N–1 security, where a significant reduction in the system’s capacity for new generation is seen when security
constraints are imposed. The method is generic and may be applied at any voltage level, for other security models, and for other similarly-structured problems such as the analysis of multiple resource availability scenarios.
Original languageEnglish
Pages (from-to)575-583
Number of pages9
JournalIEEE Transactions on Power Systems
Volume25/1
DOIs
Publication statusPublished - Feb 2010

Fingerprint

Dive into the research topics of 'Efficient secure AC OPF for network generation capacity assessment'. Together they form a unique fingerprint.

Cite this