TITLE:
Simultaneous One-Step Approximations of Real and Reactive Power Flow
AUTHORS:
Arie Ten Cate
KEYWORDS:
Power Flow Modeling, Non-Iterative Modeling, Taylor Expansion, Taylor Approximation,
JOURNAL NAME:
Journal of Power and Energy Engineering,
Vol.2 No.10,
October
10,
2014
ABSTRACT: This paper presents two new non-iterative approximations of the power flow in a network. Real and reactive power are simultaneously modelled in complex equations. Also, resistances are not set to zero. This is a generalization of the DC approximation, where only real power is modelled with zero line resistance. Hence the proposed approximations are more accurate than the DC approximation. The voltage lag over a link in a short, low voltage, network link is ten times as accurate as with the DC approximation. In the Appendix a new mathematical constant is introduced.