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
Equivalent optimization model for loss minimization: a suitable analysis approach
TL;DR: In this article, an optimization model of both internal and external network represented explicitly is proposed for minimum loss calculation, which takes into account the information related to the optimization status (under optimization or not) of external system.
Book ChapterDOI
Fundamentals of Electric Power Systems
TL;DR: In this article, the authors introduce the introduction of electric power systems and their operation and control, including SCADA/EMS active power and frequency control Voltage Control and Reactive Power Management applications.
Tight-and-cheap conic relaxation for the optimal reactive power dispatch problem
TL;DR: In this paper, a tight conic relaxation of the optimal reactive power dispatch (ORPD) problem is proposed and a round-off technique applied with this relaxation leads to near global optimal solutions with very small guaranteed optimality gaps, unlike with the nonconvex continuous relaxation.
Journal ArticleDOI
Alleviation of transmission system overloads using fuzzy reasoning
TL;DR: A set of rules are developed to model operators' decisions based on criteria concerning the extent of a limit violation, the sensitivity of a candidate control device, the margin available at the control devices, the cost of the required control move and the maximum number of control settings to be moved.
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.