Optimal DG sizing and siting in radial system using hybridization of GSA and Firefly algorithms

2018 ◽  
Vol 91 (2) ◽  
pp. 77-82 ◽  
Author(s):  
Rajesh Samala ◽  
Mercy Kotapuri
Keyword(s):  
Radial System

scholarly journals A Numerical Method for Computing Recovery of Oil By Hot Water Injection in a Radial System

1965 ◽  
Vol 5 (02) ◽  
pp. 131-140 ◽  
Author(s):  
K.P. Fournier
Keyword(s):  
Thermal Expansion ◽  
Oil Recovery ◽  
Viscosity Ratio ◽  
Water Injection ◽  
Injection Rate ◽  
Heat Losses ◽  
Hot Water ◽  
Radial System ◽  
System Equation ◽  
Finite Difference Equations

Abstract This report describes work on the problem of predicting oil recovery from a reservoir into which water is injected at a temperature higher than the reservoir temperature, taking into account effects of viscosity-ratio reduction, heat loss and thermal expansion. It includes the derivation of the equations involved, the finite difference equations used to solve the partial differential equation which models the system, and the results obtained using the IBM 1620 and 7090–1401 computers. Figures and tables show present results of this study of recovery as a function of reservoir thickness and injection rate. For a possible reservoir hot water flood in which 1,000 BWPD at 250F are injected, an additional 5 per cent recovery of oil in place in a swept 1,000-ft-radius reservoir is predicted after injection of one pore volume of water. INTRODUCTION The problem of predicting oil recovery from the injection of hot water has been discussed by several researchers.1–6,19 In no case has the problem of predicting heat losses been rigorously incorporated into the recovery and displacement calculation problem. Willman et al. describe an approximate method of such treatment.1 The calculation of heat losses in a reservoir and the corresponding temperature distribution while injecting a hot fluid has been attempted by several authors.7,8 In this report a method is presented to numerically predict the oil displacement by hot water in a radial system, taking into account the heat losses to adjacent strata, changes in viscosity ratio with temperature and the thermal-expansion effect for both oil and water. DERIVATION OF BASIC EQUATIONS We start with the familiar Buckley-Leverett9 equation for a radial system:*Equation 1 This can be written in the formEquation 2 This is sometimes referred to as the Lagrangian form of the displacement equation.

The Nerves and Muscles of Medusae

1955 ◽  
Vol 32 (4) ◽  
pp. 642-648 ◽  
Author(s):  
G. A. HORRIDGE
Keyword(s):  
Conducting System ◽  
Feeding Response ◽  
Radial System ◽  
Swimming Movement ◽  
Radial Muscle

1. The co-ordination of the swimming movement (beat) and feeding response in Aequorea forskalea has been studied with particular attention to the pathways taken by the excitation. 2. The rapid through-conducting system which co-ordinates the beat is sharply distinguished physiologically from the radial system which co-ordinates feeding. 3. The spontaneous origin of the beat and its rapid marginal conduction are both inhibited while the radial muscle is contracting. 4. Inhibition of this type has been observed in other genera of Hydromedusae

scholarly journals Customer Scattering Effect on Distribution System Reliability

2020 ◽  
Vol 8 (6) ◽  
pp. 5256-5259
Keyword(s):  
Reliability Analysis ◽  
Distributed Generation ◽  
System Reliability ◽  
Distribution System ◽  
Optimum Location ◽  
Radial System ◽  
Scattering Effect ◽  
System Reliability Analysis ◽  
Distribution System Reliability

This paper presents the customer scattering effect on distribution system reliability with Distributed Generation. In this, radial system with thirteen load points is considered and analyzed for six patterns of customer variation. The performance is observed with DG and without DG at different points along the feeder and analyzed customer scattering effect for optimum location of DG in terms of system reliability. Analysis determines the optimum DG location for improvement of system reliability varies with the customer scattering patterns.

Identification of capacitor position in a radial system

1999 ◽  
Vol 14 (4) ◽  
pp. 1368-1373 ◽  
Author(s):  
D. Sochuliakova ◽  
D. Niebur ◽  
C.O. Nwankpa ◽  
R. Fischl ◽  
D. Richardson
Keyword(s):  
Radial System

HORIZONTAL MOVEMENT OF WATER IN SOIL

1959 ◽  
Vol 39 (1) ◽  
pp. 27-31
Author(s):  
D. W. L. Read
Keyword(s):  
Soil Moisture ◽  
Laboratory Experiment ◽  
Horizontal Movement ◽  
Radial System ◽  
Water Tension ◽  
Rate Of Extraction

A laboratory experiment was conducted to determine the rate of extraction and the distance water will move in a horizontal radial system. An absorber was placed in the centre of a layer of soil 5 cm. deep. Extractions were made from three soils, loam, sand, and clay, which were at soil moisture tensions of zero to 450 cm. of water tension. Over this moisture range water moved to the absorber from at least 14 cm. away. No appreciable soil moisture tension gradients developed in the soil, even though there was a difference between the tension in the absorber and that in the cup.

Radial System Reconfiguration to Minimize Operating Costs in Markets

ENERGYO ◽  
2018 ◽  
Author(s):  
S. Chandramohan ◽  
R. P. Kumudini Devi ◽  
Bala Venkatesh
Keyword(s):  
Operating Costs ◽  
Radial System ◽  
System Reconfiguration
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