Indexing

Abstract: In a situation, where there is a shortage of power generation or the power stations are operating with a very low reserve margin, as is typically the current position in INDIA, there is a need to operate distribution network at the highest possible efficiency by utilizing network power loss reduction techniques. Such techniques are especially important when contingencies occur as they tend to increase loss, reduce efficiencies and cause power supplies to such networks to increase. This increase can cause the network or multiples of such networks to be load shed, as the power stations do not have the reserve margins to meet this increased demand. An efficiency schedule has been developed for a large ring network that reduces the loss so that its input power can be decreased. In this way, the available power existing due to the contingency can be more evenly spread, and the number of ring main networks to be load shed could be reduced. From the obtained results, the developed efficiency schedule for a large ring main network under contingency conditions was shown to be effective. The efficiency schedule is thus recommended for application in this important field as it will help to prevent load shedding, especially in the situation where power stations are operating with low reserve margins.

Keywords: Load flow, energy efficiency, ring main system, overall losses, and load shedding.
Title: Assessment of Energy Efficiency of a Large Interconnected Distribution System with Voltage Security Consideration
Author: Pragati Priya, L S Titare
International Journal of Recent Research in Electrical and Electronics Engineering (IJRREEE)
Paper Publications

Abstract: In this paper, a methodology has been proposed to minimize the losses of distribution systems (technical and non-technical losses) that is an absolutely necessary objective in the sound management of any electrical utility. The transmission & distribution losses in Indian power system are high. Most of the efforts of power planners concentrate on augmenting supply by building new power plants. But saving is possible by improving operating conditions for the distribution network. Due to inadequate planning and methods adopted for load shifting, some networks are under loaded while others are overloaded. Thus there is some scope for improvement in operating strategies. Network reconfiguration in distribution system is realized by changing the status of the sectionalizing switches and is usually done for loss reduction and avoids overloading. In primary distribution system (11KV), the need for reconfiguration occurs in emergency condition following the fault to isolate faulted section and in normal condition to reduce system losses or to avoid overloading of network. The main objective of the paper is to outline a methodology for management of distribution system for loss reduction by network reconfiguration. The possible techniques used for power loss reduction, which are network reconfiguration and capacitor addition. Case studies were simulated on an interconnected ring main distribution network.

Keywords: Load flow, Network Reconfiguration, Distribution System and overall Power Loss.
Title: Minimization of Overall Losses of a Distribution System under Contingency Conditions
Author: Pragati Priya, L S Titare
International Journal of Recent Research in Electrical and Electronics Engineering
ISSN 2349-7815
Paper Publications

Abstract: This paper covers various approaches for modelling of automatic voltage regulator for unbalanced radial distribution systems. Power loss indices are first found at each branch except source bus. The bus that has the highest power loss index will picked as the best location for the voltage regulators placement. To obtain the tap position of the voltage regulators that maintain the voltages within the limits of the unbalanced radial distribution systems by minimizing an objective function, consisting of power loss. Various techniques are used to find the selection of tap position of the voltage regulators. We have also cover the loss minimization using various techniques in unbalance radial distribution system.

Keywords: Unbalanced radial distribution systems, Voltage regulator placement, Loss minimization
Title: A Review On Voltage Regulators Placement In Unbalanced Radial Distribution System Using PSO
Author: Namrata Sahu
International Journal of Recent Research in Electrical and Electronics Engineering (IJRREEE)
ISSN: 2349-7815
Paper Publications

Keywords:Power distribution networks, fault location, artificial intelligence, fuzzy logic, genetic algorithm, impedance-based algorithm.
Title:EVOLVING TRENDS FOR ENHANCING THE ACCURACY OF FAULT LOCATION IN POWER DISTRIBUTION NETWORKS
Author:Surender Kumar Yellagoud, Prof. T. Purnachandra Rao, Dr. G. N.Sreenivas
International Journal of Recent Research in Electrical and Electronics Engineering (IJRREEE)
ISSN 2349-7815
Paper Publications