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The application of complex networks have significantly advanced in the last decade and brought about valuable insights to properties of real world systems by evaluating their structure, topology and construction. Power grid is one such real world network in which a technique of analyzing the location of a distributed generation in a distribution system of a grid has been applied based on complex network...
Distributed generation (DG) can be integrated into distribution systems to meet the increasing load demand. This paper discusses the sizing and sitting issue of single DG placement in radial distribution systems using distflow technique. The main objective of the work is to minimize the active and reactive power loss and enhance voltage profile of overall system. The effectiveness of the proposed...
Power grids are susceptible to blackouts and cascading failures. The frequent occurrences of power grid blackouts have thrown the light on vulnerability of the power system raising immense interest among researchers. The analogy of power grid with complex network has led to a new dimension in power system based on which power grid can be modelled as a graph with vertices and edges. Two recent indices...
The major goal of this present work is to evolve combined economic emission dispatch problems employing a modified glowworm swarm based optimization (MGSO) approach. The objective function of this article is treated as cost and emission. The assumption has been carried out by the decision maker for which the multiobjective problem is translated to one intent function. The glowworm swarm based algorithm...
The influence of Distributed Generation (DG) in distribution network is emphasized because of its promises to supply reliable and better quality of electric power to consumers. Moreover, changing economical and regulatory environment are encouraging electrical utilities to concentrate on DG. A Particle Swarm Optimization (PSO) based formulation of optimization problem to facilitate determination of...
The paper presents an algorithm for reconfiguration of radial distribution networks based on fuzzy multiobjective approach by considering different types of loads. Multiple objectives are considered to minimize the real power loss, deviation of nodes voltage and improvement of voltage stability of the network while subject to a radial network structure, in which all loads must be energized. These...
The paper presents voltage stability margin (VSM) of radial distribution network by considering a unique reactive loading index for composite loads. It is shown that the branch, at which the value of reactive loading index is minimum, is considered to be the weakest branch of the system. Then, the voltage stability margin (VSM) of the feeder is selected heuristically. It is the product of reactive...
Planned application of Distributed Generation (DG) in distribution system can provide voltage support at feeder and help to avoid branch overloading, network power loss, high investment cost etc. A Particle Swarm Optimization based formulation of constrained optimization problem to facilitate determination of sizes of multiple DGs has been proposed in this paper. Both the minimum and maximum sizes...
The objective of congestion management is to take actions or control measures in order to avoid line overloading of transmission networks. A restructuring based congestion management technique has been proposed in this paper. Proposed methodology can ensure an appropriate level of voltage stability enhancement of network. Minimization of system power losses is also obtained. A novel voltage stability...
Recent trend in power sector is to automate distribution system to improve their reliability, efficiency and service quality. To facilitate automation of distribution system, an Artificial Neural Network (ANN) based novel methodology for enhancement of voltage stability by network reconfiguration is presented in this paper. Network reconfiguration is a process which alters the feeder topological structure...
This paper presents Loading Status for all Branches in chronological order at different Conditions in Radial Distribution Systems using Reactive Loading Index. Although under different loading conditions for all the branches the identified weakest branch remains same but the corresponding loading at different branches in chronological order has been categorically identified for different values other...
This paper presents a unique method to determine the weakest branch or the overstressed branch in a distribution network. This radial feature of the network has been fully exploited to establish the concept of local voltage stability indicator in terms of reactive power. The effectiveness of the proposed method has been successfully tested in 12 bus radial distribution system and the results are found...
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