Abstract
Reduced order models of dc networks using Ward, REI, and bus-aggregation approaches have been used to advantage for some time. Proposed in this paper is an optimization-based framework that can easily be modified to generate a Ward reduction, a bus-aggregation-based reduction, or a range of hybrid reductions between these two extremes, generating reduced-order models that are tailored to the purpose of the study. The so-called optimization-based Ward reduction method is demonstrated to be numerically stable on practical examples and is specifically applied to the problem of large-reactance branch elimination. We show that it offers accuracy advantages over the traditional approach of removing high-reactance branches using a threshold criterion.
Original language | English (US) |
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Pages (from-to) | 2509-2517 |
Number of pages | 9 |
Journal | IEEE Transactions on Power Systems |
Volume | 33 |
Issue number | 3 |
DOIs | |
State | Published - May 2018 |
Keywords
- Network reduction
- PTDF
- Ward
- inter-zonal
- optimization
- unified-framework
ASJC Scopus subject areas
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering