Journal ArticleDOI
Some deficiencies in optimal power flow
TLDR
In this article, the use of equivalents causes errors, the methods for adjusting discrete variables are suboptimal, and the number of control actions is too large to be executed, and approaches for correcting them are discussed.Abstract:
Optimal power flow programs have deficiencies that limit their practical value and scope of application. Three of these deficiencies are: (1) the use of equivalents causes errors, (2) the methods for adjusting discrete variables are suboptimal; and (3) the number of control actions is too large to be executed. These deficiencies are explained, and approaches for correcting them are discussed. >read more
Citations
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Journal ArticleDOI
Combined Operations of Renewable Energy Systems and Responsive Demand in a Smart Grid
TL;DR: An energy management system (EMS) aiming at optimizing the SG's operation, which behaves as a sort of aggregator of distributed energy resources allowing the SG to participate in the open market and improve the grid resilience and flexibility.
Journal ArticleDOI
Smart Operation of Wind Turbines and Diesel Generators According to Economic Criteria
TL;DR: This paper describes the proposed approach that makes use of an optimal power flow algorithm and the active management schemes for Smart Grid management, and proves the efficiency of the method on a distribution system comprising wind turbines and diesel generators.
Journal ArticleDOI
An extended nonlinear primal-dual interior-point algorithm for reactive-power optimization of large-scale power systems with discrete control variables
TL;DR: A new algorithm for reactive-power optimization of large-scale power systems involving both discrete and continuous variables by incorporating a penalty function into the nonlinear primal-dual interior-point algorithm is presented.
Journal ArticleDOI
Application of Newton's optimal power flow in voltage/reactive power control
TL;DR: In this paper, the authors considered an application of Newton's optimal power flow to the solution of the secondary voltage/reactive power control in transmission networks and developed an efficient computer program based on the latest achievements in sparse matrix/vector techniques.
Journal ArticleDOI
Coordinated Transmission and Distribution AC Optimal Power Flow
TL;DR: A heterogeneous decomposition algorithm (HGD), which is inspired by heterogeneous transmission and distribution characteristics, is proposed to solve theTDOPF in a distributed manner and a series of numerical tests indicate that the HGD competitively solves the TDOPF.
References
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Journal ArticleDOI
Optimal Power Flow By Newton Approach
TL;DR: In this paper, a direct simultaneous solution for all of the unknowns in the Lagrangian function on each iteration is proposed, where each iteration minimizes a quadratic approximation of the Lagrangeian.
Journal ArticleDOI
Linear Programming for Power-System Network Security Applications
B . Stott,J. L. Marinho +1 more
TL;DR: A linear programming method for security dispatch and emergency control calculations on large power systems is presented, which works directly with the normal power-system variables and limits, and incorporates the usual sparse matrix techniques.
Journal ArticleDOI
Studies on Power System Load Flow Equivalencing
TL;DR: In this paper, the principles and main methods for load-flow equivalence, with due emphasis given to on-line applications, are reviewed and a critical analysis of the properties of the different methods is made, to assist in choosing the most suitable ones for practical application.
Journal ArticleDOI
Network Topology Optimization with Security Constraints
R. Bacher,Hans Glavitsch +1 more
TL;DR: In this paper, a current injection scheme is used to simulate the change in topology of a base network. But the injected currents are applied to the terminals of the elements of a socalled base network corresponding to those actually switched.
Journal ArticleDOI
Large Scale Optimal Power Flow
TL;DR: In this paper, a new optimization method is applied to optimal power flow analysis, based on transforming the original problem to that of solving a sequence of linearly constrained subproblems using an augmented Lagrangian type objective function.