Results 1 to 10 of about 330,060 (260)
Linear Power Flow Calculation of Distribution Networks With Distributed Generation [PDF]
IEEE Access, 2019 To address the shortcomings of the existing linear power flow calculation methods for distribution networks with low versatility and calculation accuracy, a linear power flow calculation method considering distributed generation (DG) is proposed ...
Kuan Liu +4 more
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Linear/quadratic programming-based optimal power flow using linear power flow and absolute loss approximations [PDF]
International Journal of Electrical Power and Energy Systems, 2019 This paper presents novel methods to approximate the nonlinear AC optimal power flow (OPF) into tractable linear/quadratic programming (LP/QP) based OPF problems that can be used for power system planning and operation. We derive a linear power flow approximation and consider a convex reformulation of the power losses in the form of absolute value ...
Turhan Demiray
exaly +4 more sources
On the Existence and Linear Approximation of the Power Flow Solution in Power Distribution Networks [PDF]
IEEE Transactions on Power Systems, 2016 We consider the problem of deriving an explicit approximate solution of the nonlinear power equations that describe a balanced power distribution network. We give sufficient conditions for the existence of a practical solution to the power flow equations, and we propose an approximation that is linear in the active and reactive power demands of the PQ ...
Silverio Bolognani, Sandro Zampieri
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Optimal power flow based on successive linear approximation of power flow equations
IET Generation, Transmission and Distribution, 2016 In this study, the authors introduce a new solution to the alternating current optimal power flow problem based on successive linear approximation of power flow equations. The polar coordination of the power flow equations is used to take advantage of the quasi‐linear P–
, Haiwang Zhong, Qing Xia
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Optimization-Based Islanding of Power Networks Using Piecewise Linear AC Power Flow [PDF]
IEEE Transactions on Power Systems, 2014 In this paper, a flexible optimization-based framework for intentional islanding is presented. The decision is made of which transmission lines to switch in order to split the network while minimizing disruption, the amount of load shed, or grouping coherent generators.
Paul Trodden, Andreas Grothey
exaly +8 more sources
A Linear Power Flow Formulation for Three-Phase Distribution Systems
IEEE Transactions on Power Systems, 2016 Power flow analysis is one of the tools that is required in most of the distribution system studies. An important characteristic of distribution systems is the load unbalance in the phases and a three-phase power flow analysis is needed. In this paper, a three-phase linear power flow (3LPF) formulation is derived based on the fact that in a typical ...
JOSÉ R Marti, Alexandra Von Meier
exaly +3 more sources
Islanded Microgrid Restoration Studies with Graph-Based Analysis
Energies, 2022 The need to restore and keep the grid running or fast restoration during emergencies such as extreme weather conditions is quite apparent given the reliance of other infrastructure on electricity.
Ogbonnaya Bassey, Karen L. Butler-Purry
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Linear optimal power flow using cycle flows [PDF]
Electric Power Systems Research, 2018 11 pages, 5 figures; version 2 includes results for generation capacity optimization; version 3 is the final accepted journal ...
Jonas Hörsch +3 more
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Zhongguo dianli, 2022 The linear power flow calculation method can provide better robustness and higher efficiency for active distribution network analysis and operation regulation.
Hongwei LI, Li PAN, Lu HAN, Mingrui GE
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A Linear-Programming Approximation of AC Power Flows [PDF]
INFORMS Journal on Computing, 2014 Linear active-power-only power flow approximations are pervasive in the planning and control of power systems. However, AC power systems are governed by a system of nonlinear nonconvex power flow equations. Existing linear approximations fail to capture key power flow variables, including reactive power and voltage magnitudes, both of which are ...
Coffrin, C, Van Hentenryck, Pascal
openaire +4 more sources