Journal ArticleDOI
A compensation-based power flow method for weakly meshed distribution and transmission networks
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In this article, a power flow method is described for solving weakly meshed distribution and transmission networks, using a multiport compensation technique and basic formations of Kirchoff's laws.Abstract:
A power flow method is described for solving weakly meshed distribution and transmission networks, using a multiport compensation technique and basic formations of Kirchoff's laws. This method has excellent convergence characteristics and is robust. A computer program implementing this scheme was developed and successfully applied to several practical distribution and transmission networks with radial and weakly meshed structures. The method can be applied to the solution of both the three-phase (unbalanced) and single-phase (balanced) representation of the network, however, only the single-phase representation is treated in detail. >read more
Citations
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Journal ArticleDOI
Optimal sizing of capacitors placed on a radial distribution system
M.E. Baran,F.F. Wu +1 more
TL;DR: In this paper, a nonlinear programming problem for capacitors placed on a radial distribution system is formulated and a solution algorithm is developed to find the optimal size of capacitors so that the power losses will be minimized for a given load profile while considering the cost of the capacitors.
Journal ArticleDOI
Reconfiguration of electric distribution networks for resistive line losses reduction
D. Shirmohammadi,H.W. Hong +1 more
TL;DR: In this paper, the authors describe a heuristic method for the reconfiguration of distribution networks in order to reduce their resistive line losses under normal operating conditions, characterized by convergence to the optimum or a near-optimum solution and the independence of the final solution from the initial status of the network switches.
Journal ArticleDOI
A direct approach for distribution system load flow solutions
TL;DR: In this paper, a direct approach for unbalanced three-phase distribution load flow solutions is proposed, where two developed matrices, the bus-injection to branch-current matrix and the branchcurrent to busvoltage matrix, and a simple matrix multiplication are used to obtain load flow solution.
Journal ArticleDOI
A three-phase power flow method for real-time distribution system analysis
C.S. Cheng,D. Shirmohammadi +1 more
TL;DR: In this article, a three-phase power flow solution method for real-time analysis of primary distribution systems is presented, with the emphasis on modeling of dispersed generation (PV nodes), unbalanced and distributed loads, and voltage regulators and shunt capacitors with automatic local tap controls.
Journal ArticleDOI
Convex Relaxation of Optimal Power Flow—Part I: Formulations and Equivalence
TL;DR: This tutorial summarizes recent advances in the convex relaxation of the optimal power flow (OPF) problem, focusing on structural properties rather than algorithms.
References
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Journal ArticleDOI
A Load Flow Calculation Method for III-Conditioned Power Systems
S. Iwamoto,Y. Tamura +1 more
TL;DR: A load flow calculation method for ill-conditioned power systems is developed, and it is found that the solution does not exist for the 11 and 43 bus systems though the given data are said to be operational, and also that the answer does not converge with the single precision due to the precision deficiency of the computer.
Journal ArticleDOI
Load-Flow Solutions for Ill-Conditioned Power Systems by a Newton-Like Method
TL;DR: In this paper, a variation of Newton's method incorporating Gaussian elimination in such a way that the most recent infonnation is always used at each step of the algorithm; similar to what is done in the Gauss-Seidel process.
An application of ladder network theory to the solution of three-phase radial load-flow problems.
Kersting W H,Mendive D L +1 more
Journal ArticleDOI
Calculation of Energy Losses in a Distribution System
TL;DR: In this article, a new method for evaluating energy and capacity losses on a distribution feeder in a rigorous manner is presented, where typical daily load shapes are integrated with a load flow procedure to produce an energy model.
Journal ArticleDOI
A modification to the fast decoupled power flow for networks with high R/X ratios
D. Rajicic,Anjan Bose +1 more
TL;DR: In this paper, a modification of the fast decoupled load-flow method for power systems with high ratio of branch resistance to reactance has been presented, and the test results show that this method not only converges well for systems with very high branch resistance, but also is only slightly less efficient than systems with normal ratios.
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