The objective of an Optimal Power Flow (OPF) algorithm is to find steady state operation point which minimizes generation cost, loss etc. or maximizes social welfare, loadability etc. while maintaining an acceptable system performance in terms of limits on generators’ real and reactive powers, line flow limits, output of various compensating devices etc. Traditionally, classical optimization me...

This paper presents a Shuffled Frog Leaping Algorithm to seek the optimal number and location of FACTS devices in a power system. Unified Power Flow Controller (UPFC) has great flexibility that can control the active and reactive power flow and bus voltages, simultaneously. Decoupled model of the UPFC is applied to maximize the system loadability subject to the transmission line capacity limits...

Voltage instability has been given much attention by power system researchers and planners in recent years. One of the main reasons for voltage instability is reactive power imbalance in the power system. This paper proposes the use of wind power network for rectifying the problem of voltage instability. The aim of this paper is to identify the optimal location of FACTS controllers in an interc...

This paper presents a simple simulation approach to study static voltage stability in power systems. Symbolic and Optimization toolboxes in MATLAB are used to simulate load flow, continuation power flow and optimization techniques to easily assess and understand static voltage stability of power systems. P-V curves are constructed to calculate loadability margins. These margins are verified wit...

The electrical energy is a primary prerequisite for economic growth. Modern power system operates under much stressed conditions because of growth in demand and deregulation of electric power system. Cogeneration and power generation from renewable play a key role in these scenarios. In this paper the affects of DE on the system voltage stability has been assessed. The maximum loadability margi...

Energy methods have shown promise as measures for quantifying the vulnerability of power systems to problems of voltage instability and collapse. However, to make such measures more useful as a security assessment tool in an operational environment, it is important to provide physical interpretations of the quantitative measure. This paper will demonstrate that for certain basic load models, th...

Department of Mathematics Sathyabama University, Chennai – 119 [email protected] Abstract This paper deals with the Distributed Generation (DG) capacity of the electrical power system. DG capacity is formulated as a Mixed Integer Programming (MIP) problem with respect to various operating constraints in power generation. The objective of this model is to minimize the real power loss by ...

This document lists some challenges that researchers face when implementing transactive energy in weak power grids. These often include high voltage fluctuations, limited generation, line loadability, and unbalanced The operation of energy, as well optimization techniques, are also considered, highlighting the performance functionalities depending on grid characteristics market topology. Some m...