نتایج جستجو برای: distribution power flow

تعداد نتایج: 1485077  

A genetic algorithm is proposed to optimize a tree-structured power distribution network considering optimal cable sizing. For minimizing the total cost of the network, a mixed-integer programming model is presented determining the optimal sizes of cables with minimized location-allocation cost. For designing the distribution lines in a power network, the primary factors must be considered as m...

ژورنال: مهندسی دریا 2008
محمدی‌نائینی, محمدرضا,

In this paper, the analysis of two dimensional viscous incompressible flow around bodies with multiple industrial applications, is presented. Both of boundary layer flow and potential flow have been analysed repeatedly and in this way, the major parameters of flow are calculated. Laminar and turbulent boundary layer flow are solved with the aid of an virtual flow normal to the surface of the bo...

منوچهر حیدرپور, , حسین افضلی مهر, , سید حسین فرشی, ,

In this study, two data ranges of uniform flow (bulk parameters) and non-uniform flow (local parameters) are employed to investigate resistance to flow and the factors affecting it using velocity distribution of boundary layer theory. The results indicate that the cross-section form factor or adjustment roughness coefficient of logarithmic law can not improve the prediction of flow resistance....

ژورنال: علوم آب و خاک 2003
منوچهر حیدرپور, , حسین افضلی مهر, , سید حسین فرشی, ,

In this study, two data ranges of uniform flow (bulk parameters) and non-uniform flow (local parameters) are employed to investigate resistance to flow and the factors affecting it using velocity distribution of boundary layer theory. The results indicate that the cross-section form factor or adjustment roughness coefficient of logarithmic law can not improve the prediction of flow resistance....

2009
A. Alsaadi B. Gholami

An effective approach for unbalanced three-phase distribution power flow solutions is proposed in this paper. The special topological characteristics of distribution networks have been fully utilized to make the direct solution possible. Two matrices—the bus-injection to branch-current matrix and the branch-current to busvoltage matrix— and a simple matrix multiplication are used to obtain powe...

Journal: :the modares journal of electrical engineering 2016
m. mohammadi m. mousavi a. shayegani shayegani m.m. arefi arefi

this paper presents a probabilistic confidence-interval based method for optimal placement of shunt capacitors in distribution networks by considering probabilistic characteristics of loads. the main objective function are reducing loss and improving the voltage profile. backward forward sweep method has been employed to obtain the power flow results in distribution system. in addition, integer...

Journal: :IEEJ Transactions on Power and Energy 2006

Journal: :Iet Generation Transmission & Distribution 2023

Abstract Optimal power flow (OPF) plays an important role in the secure and economical operation of distribution network. This paper proposes a novel generalized linear‐constrained optimal (GLOPF) model for both radial mesh networks, which iteratively approaches solution to original OPF problem. The first‐order Taylor series approximation method is applied linearize non‐linear non‐convex constr...

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