Open AccessExtended fast decoupled power flow for reconfiguration networks in distribution systems
Author(s) -
Fonseca Alexandre G.,
Tortelli Odilon L.,
Lourenço Elizete M.
Publication year - 2018
Publication title -
iet generation, transmission and distribution
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.92
H-Index - 110
eISSN - 1751-8695
pISSN - 1751-8687
DOI - 10.1049/iet-gtd.2018.5886
Subject(s) - control reconfiguration , observability , islanding , computer science , topology (electrical circuits) , power (physics) , power flow , electric power system , phasor measurement unit , flow (mathematics) , power flow study , distributed computing , control theory (sociology) , engineering , mathematics , phasor , electrical engineering , embedded system , control (management) , physics , geometry , quantum mechanics , artificial intelligence
This study proposes a power flow methodology focused on the need for reconfiguration analysis in modern distribution networks. The proposal is based on the extended fast decoupled Newton–Raphson method, which uses the information of the network switching equipment status (open or closed). To deal with eventual islanding during a reconfiguration procedure, a numerical observability technique used in state estimation analysis has been adapted for topological processing when network segments are disconnected from voltage references. A complex per unit normalisation technique is employed so that the power flow calculation by the fast decoupled approach is viable, even for networks having high R/X ratio lines. Simulation results considering two distribution feeders, one of large size, with different topological conditions are presented. The performance of the proposed methodology qualifies it as a relevant computational tool to support network reconfiguration studies involving emergent distribution systems.