Port Said University, Faculty of Engineering
Port-Said Engineering Research Journal
1110-6603
2536-9377
18
2
2014
09
01
The Optimal Classification of Partial Discharge Defects within XLPE Cable by Using ANN and Statistical Techniques
1
7
EN
Sobhy
S.
Dessouky
Department of Electrical Engineering –
Port Said University, Port Said, Egypt
sobhyserry@yahoo.com
Adel
El Faraskoury
Adel A. El Faraskoury is with Egyptian Electricity Holding Company, Extra High Voltage Research Centre, Cairo, Egypt
dr.adel_elfaraskoury@yahoo.com
Samer
El-Mekkawy
S. M. El-Mekkawy is with Department of Electrical Engineering - Port Said University, Port Said, Egypt
makkawy_06@hotmail.com
Waleed
El Zanaty
Waleed M. Elzanati is with Department of Electrical Engineering - Port Said University, Port Said, Egyp
waleed_elzanaty@yahoo.com
10.21608/pserj.2014.45254
The classification of medium voltage cable defects is the most important tool to avoid the inaccurate Partial Discharge (PD) measurements. This paper presents a proposed methodology based on pattern recognition technique to classify the PD occurred in cables into two distinct groups: internal and external. The Artificial Neural Networks (ANNs) with different input schemes have been built to obtain the optimal classification. Many statistical features, which extracted by different techniques from measurements, have established the input schemes 3D-pattern PD to improve the performance and classification speed of ANN. In order to obtain the effective statistical features, the study and comparison between all ANN has been finished by evaluating the classification through two parameters: the mean square error (MSE) and the accuracy of neural network. As a result, the proposed approach provides high recognition rate of classification between internal and external PD within Cross-Linked Polyethylene (XLPE) insulated medium voltage cable
Partial Discharge,XLPE Power Cables,Pattern Classification,Neural network,Statistical features
https://pserj.journals.ekb.eg/article_45254.html
https://pserj.journals.ekb.eg/article_45254_c19f46cf4150d5a9c58c37e8346e454e.pdf
Port Said University, Faculty of Engineering
Port-Said Engineering Research Journal
1110-6603
2536-9377
18
2
2014
09
01
Sensor and Sensorless Speed Control of Doubly Fed Induction Generator Wind Turbines for Maximum Power Point Tracking
8
16
EN
Fathy
Abd Elkader
Electrical Engineering Department Faculty of Engineering ,Monofia University, Monofia, Egypt.
fatkader2@yahoo.com
Basem
Elhady
Electrical Engineering , Faculty of Engineering, Suez Canal University, Ismailia,
basem_elhady@yahoo.com
Ahmed
Kalas
Faculty of Engineering – port said university
kalas_14@yahoo.com
10.21608/pserj.2014.45256
Wind turbine output power can be maximized using maximum power point tracking (MPPT). By estimating wind speed, the MPPT can be achieved easily by adjusting the speed of DFIG based wind turbine through back-to-back converter. The grid side unity power factor can be simply achieved using PI controller on hybrid inverter. The aerodynamic power captured by wind turbine is the cosine function of pitch angle. In this paper, the pitch angle is kept zero, which is a valid assumption for lower to medium wind velocities .The machine side converter (MSC) is used to track the maximum power point for different wind speed. The grid side converter (GSC) uses a vector current controller to supply power at unity power factor to the grid. The simulations have been performed using MATALB/SIMULINK. The effectiveness of proposed control methods validated
Maximum PowerPoint Tracking (MPPT),doubly fed induction generator (DFIG),Variable speed wind turbine (VSWT),Wind energy
https://pserj.journals.ekb.eg/article_45256.html
https://pserj.journals.ekb.eg/article_45256_4de9530669520dfcf2ae646150cdd6a0.pdf
Port Said University, Faculty of Engineering
Port-Said Engineering Research Journal
1110-6603
2536-9377
18
2
2014
09
01
Testing and Evaluation of Transmission Line Relays Using Advanced Tools
17
24
EN
H
Saber
Helwan University, Faculty of industrial education, Dept. of Electrical, Cairo, Egypt
H
Mostafa
Suez Canal University, Faculty of Industrial Education, Dept. of Electrical, Suez, Egypt
E
Shehab Eldin
Helwan University, Faculty of engineering, Dept. of Electrical Power and Machines, Cairo, Egypt
F
Khalifa
Suez Canal University, Faculty of Industrial Education, Dept. of Electrical, Suez, Egypt
10.21608/pserj.2014.45259
Protective relays are important parts of the power system. The objective of the protection in power systems is to eliminate faults or unacceptable operating conditions for a component and related effects on the network. Fault elimination is usually done by isolation of the affected component. There are various types of faults, a special category are faults on generators (e.g. under excitation). But all other common transmission components are exposed mostly to faults as overvoltage and most of all over current, which is more commonly referred to as short-circuit. To ensure consistent reliability and proper operation, protective relay equipment must be evaluated and tested. The importance of the relay evaluation issue is linked to capability to test the relays and relaying systems using very accurate waveform representation of a fault event. The purpose of testing protective relays is to ensure correct operation of the relay for all possible power system conditions and disturbances. To fulfill this purpose, relay testing in varying network configurations and with different fault types is required. This paper describes a methodology in testing relays by using advanced digital simulator hardware
The importance of the relay evaluation issue is linked to capability to test the relays and relaying systems using very accurate waveform representation of a fault event
https://pserj.journals.ekb.eg/article_45259.html
https://pserj.journals.ekb.eg/article_45259_4dacbb71c44149447ed04fdfdab5748b.pdf
Port Said University, Faculty of Engineering
Port-Said Engineering Research Journal
1110-6603
2536-9377
18
2
2014
09
01
THEORETICAL AND EXPERIMENTAL INVESTIGATION OF DC SERVO-MOTOR
25
31
EN
Shereen
Elsayed
Electrical Power, and Machines Department, Faculty of Industrial Education, Suez University, Suez, Egypt, E-mail
shereenfayad@yahoo.com
Sobhy
S.
Dessouky
Department of Electrical Engineering –
Port Said University, Port Said, Egypt
sobhyserry@yahoo.com
Hossam
Attia
4Electrical Engineering ,Faculty of Industrial Education
Suez University ,Suez, Egypt
hossam65eg@yahoo.com
10.21608/pserj.2014.45262
In this paper the proportional integral derivative (PID) controller is designed and used to control the DC servo motor. The PID parameters are optimized by the trial and error method. The controller is verified on the loaded DC servo motor by SIMULINK program. The controller SIMULINK model is verified experimentally. Acceptable agreement is obtained between theoretical and experimental results. Simulation and experimental results verify the effectiveness of the PID controller of the DC servo motor.
DC Servo Motor,Proportional-Integral- derivative,Ziegler-Nichols method,Particle Swarm Optimization
https://pserj.journals.ekb.eg/article_45262.html
https://pserj.journals.ekb.eg/article_45262_c0a0362291e95eca5ea3573edd1e43d4.pdf
Port Said University, Faculty of Engineering
Port-Said Engineering Research Journal
1110-6603
2536-9377
18
2
2014
09
01
Fault response of grid-connected squirrel cage wind-power induction generator
32
41
EN
Nagwa
Fadi
Electrical Power, and Machines Department, Faculty of Industrial Education, Suez University, Suez, Egypt,
eng.nagwafadl@yahoo.com
Ali
Kasem
Alaboudy
Electrical Department, Faculty of Industrial Education, Suez University, Suez, Egypt
ali_hkasem@yahoo.com
Hossam
Attia
4Electrical Engineering ,Faculty of Industrial Education
Suez University ,Suez, Egypt
hossam65eg@yahoo.com
Sobhy
S.
Dessouky
Department of Electrical Engineering –
Port Said University, Port Said, Egypt
sobhyserry@yahoo.com
10.21608/pserj.2014.45265
This paper presents fault response of squirrel cage induction generator through grid connected of wind power. Thus, the Squirrel Cage Induction Generator (SCIG) is connected to an infinite bus through delta grounded wye transformer, transmission line and load. The capacitance compensation will be installed. The simulation model of grid connected squirrel cage wind power induction generator is discussed in the stationary reference frame using (MATLAB/SIMULINK). Simulations results have been investigated by various symmetrical and unsymmetrical faults. The fault is applied to the induction generator terminals. The paper introduces various types of algorithms to calculate the currents, frequencies and voltages in order to protect the wind driven induction generator connected to a power system grid.
squirrel cage induction generator (SCIG),short-circuit,fault,protection Algorithms
https://pserj.journals.ekb.eg/article_45265.html
https://pserj.journals.ekb.eg/article_45265_604f42390ea8612336a5eb3a747456bb.pdf
Port Said University, Faculty of Engineering
Port-Said Engineering Research Journal
1110-6603
2536-9377
18
2
2014
09
01
Simulation Study of Screw Micro Pumps Design and Performance
42
50
EN
10.21608/pserj.2014.45282
Increasing efforts are being directed towards applying the technologies of micro-fluidic, to the development of micro-devices for a wide range of applications such as medical, biological, engineering and related technologies. The present studies are interested with the design of micro-screw pump for viscous fluid and its operating behaviour, the steady performance of the micro-pump will be investigated numerically. The present numerical investigation is a comparative study of a steady flow behavior in a micro-channel with rotating screw with different operation and design parameters. The numerical investigation is performed using computational fluid dynamic techniques. The FLUENT program as CFD simulation program in the ANSYS 14.0 package used to simulate the pump model. The results of the simulation problem give an agreement with literature experimental results which validate the simulation model that encourage future simulation of the studied system. Theoretical analysis by is carried out to study the influence of the helix angle, diameter of the screw, screw length and the thread height (flight depth) to evaluate the optimal dimensions for the pump to obtain the maximum flow rate and pump performance The effect of screw angular velocity and pump load were studied
Micro-pump,Screw thread,Screw diameter,Helix angle
https://pserj.journals.ekb.eg/article_45282.html
https://pserj.journals.ekb.eg/article_45282_ac2dd24639bf3538bd04ce5fd3b1dada.pdf
Port Said University, Faculty of Engineering
Port-Said Engineering Research Journal
1110-6603
2536-9377
18
2
2014
09
01
Technical and Environmental Improvements of LNG Carrier's Propulsion Machinery by Using Jatropha Bio - diesel fuel
51
58
EN
Esaid
Hegazy
Professor Of Naval Arch. And Marine Eng. Dept., Faculty Of Eng., Port Said Univ
Mohamed
Mousad
Professor Of Naval Arch. And Marine Eng. Dept., Faculty Of Eng., Port Said Univ
Adil
Tawfik
Professor Of Naval Arch. And Marine Eng. Dept., Faculty Of Eng., Port Said Univ
Mohamed
Hassan
Professor Of Marine Eng. Dept, Faculty Of Eng. And Tech., Aast
Mohamed
Abas
Lecturer In College Of Marine Transport, Aast
10.21608/pserj.2014.45286
Modern dual fuel engine is looking for a new alternative fuel because of the higher prices and lower production of diesel. Jatropha biodiesel is a promising substitute as an alternative fuel has gained significant attention due to the predicted shortness of conventional fuel and environmental concerns. The operating test values obtained from the Jatropha oil is closely matched with the values of conventional diesel and can be used in the existing diesel engine without any modification. This paper studies the most promising propulsion alternatives of future Liquefied Natural Gas (LNG) carriers running by dual fuel engine used boil off natural gas (BOG) from LNG carriers cargo tanks vessels as main fuel and Jatropha biodiesel oil as pilot fuel. An experimental investigation was performed to investigate the influence of dual-fuel combustion on the performance and exhaust emissions of a direct injection (DI) diesel engine fueled with Jatropha oil and natural gas (NG). A single cylinder diesel engine was set up and arranged to measure and study the engine performance at all running parameters. The test rig aims to simulate the operating conditions of BOG in propulsion machinery of LNG carriers. The present investigation studies the engine performance and emissions experimentally at different loads to obtain the best load condition by using natural gas and Jatropha biodiesel oil. The obtained results showed that the thermal and volumetric efficiency of diesel engine is higher than Jatropha biodiesel engine. The specific fuel consumption, exhaust gas temperature, HC, CO2 and NO were comparatively higher in Jatropha biodiesel. While an appreciable increase in cylinder pressure and CO emission when using diesel. It was observed that the combustion characteristics of the Jatropha biodiesel followed closely with that of the base line diesel. This means that, Jatropha biodiesel can be used instead of diesel fuel oil with safe engine operation.
Dual fuel diesel engine,Natural gas,Jatropha oil, Dual fuel combustion emissions
https://pserj.journals.ekb.eg/article_45286.html
https://pserj.journals.ekb.eg/article_45286_5cee6c0910fe58f8aa4edf84a270829d.pdf
Port Said University, Faculty of Engineering
Port-Said Engineering Research Journal
1110-6603
2536-9377
18
2
2014
09
01
Transport Accessibility: A Tool for Identification of Activity- Based Destination Choice Model for Port-Said City, Egypt
52
66
EN
Marwa
El-Bany
Assistant lecturer of Transportation and Traffic Eng., Faculty of
Engineering, Port-Said University, Egypt.
Mohamed
Shahin
Professor of Transportation and Traffic Eng., Faculty of Engineering,
Alexandria University, Egypt.
Ibrahim
Hashim
Associate professor of Transportation and Traffic Eng., Faculty of
Engineering, Menoufia University, Egypt
Mohamed
Serag
Associate professor of Transportation and Traffic Eng., Faculty of
Engineering, Port-Said University, Egypt
10.21608/pserj.2014.45291
The destination choice is an essential step of the travel demand modeling. Many previous studies were concentrated on<br />land use which means that the utilization of land for different activities such as residential, commercial, industrial,<br />educational, etc. is linked with travel demand. Accessibility is often seen to be an important determinant of the activities<br />destination choice. This study is concerned with using the accessibility concept to investigate the utility function of the<br />activity destination choice. A case study is Port Said (PS) City in Egypt. The characteristics of time, cost, and income<br />level are obtained from activity based comprehensive transportation surveys. The benefit or utility of choosing a<br />specific activity (BM values) are estimated based on the calculation of accessibility benefit from time-space geography<br />measures for different zones in PS. Binary and Multinomial logit models were used for daily activities performed by<br />individuals. During different time segment, the model predicts individual probability of choosing one of the following<br />five activities: work, shopping, school, university, and Leisure. The accessibility benefits are examined associating with<br />decreasing travel time (public transport-oriented development), improving income level for poor, and restricting car use.<br />Finally, the model approved to be sensitive to different measures and hence it can be used as an effective informative<br />tool to the decision makers.
Accessibility-Benefit,Destination Choice,Activity-Based (AB) model,Utility Function
https://pserj.journals.ekb.eg/article_45291.html
https://pserj.journals.ekb.eg/article_45291_a0600360a7ddc9ac00aead86cec19284.pdf
Port Said University, Faculty of Engineering
Port-Said Engineering Research Journal
1110-6603
2536-9377
18
2
2014
09
01
Analytical Solution Developed for Optimizing Double-Pipe Flow Systems
67
75
EN
Mohamed
Somaida
Faculty of Engineering, Port Said University
m.somaida@yahoo.com
10.21608/pserj.2014.45292
In the present study an equation has been developed to estimate the optimal design diameters of double-pipe flow systems . The equation is based on hydraulic and economic considerations and is applicable in annular flow turbulent regions. The equation is tried on data obtained from an experimental work , conducted on a specified annular flow system . The equation gives good results as illustrated from computations and has revealed that, considerable reductions have been achieved in pipe, pumping and pump costs by the selection of the optimal diameters of the double-flow pipe system
Annular flow,Pipe cost,Pump and pumping costs,Annulus friction factor,equivalent diameter,Optimization,Optimal design-diameter ratio
https://pserj.journals.ekb.eg/article_45292.html
https://pserj.journals.ekb.eg/article_45292_a7ee95c3db6815a549862858e111f031.pdf
Port Said University, Faculty of Engineering
Port-Said Engineering Research Journal
1110-6603
2536-9377
18
2
2014
09
01
Analytical Solution Developed For Predicting Transient Interface in Coastal Unconfined Aquifers
91
98
EN
Mohamed
Somaida
Faculty of Engineering, Port Said University
m.somaida@yahoo.com
10.21608/pserj.2014.45293
For predicting fresh-salt water interface in unconfined coastal aquifers, an equation has been developed to estimate the advance of interface which depends on; the densities of fresh and salt water, the hydraulic properties of the aquifer and the flow velocity components at the boundaries of the aquifer. The developed equation is tried in Sidi Kreir Locality, 32 km west of Alexandria (north-western coastal zone), constituting a coastal unconfined aquifer. The values for advance of interface estimated by the developed equation are compared with those computed using Ghyben-Herzberg relation and are found to have an order of magnitude agreement and are of nearer values. The developed equation is considered advantageous because it considers the hydraulic properties of the aquifer as well as the laws governing the potential flow of two liquids in the porous medium. Assessment of the goodness of the fitting of the compared values for advance of interface shows that; the analytical solution developed, seems to be successful procedure for predicting the movement of the fresh-salt water interface in coastal unconfined aquifers existing in favorable areas
Coastal unconfined aquifer-Water table- Predicting- Transient Interface- Velocity Potential- Goodness of Fitting
https://pserj.journals.ekb.eg/article_45293.html
https://pserj.journals.ekb.eg/article_45293_3270dc2caed2f8e647e09de98f8b1bac.pdf
Port Said University, Faculty of Engineering
Port-Said Engineering Research Journal
1110-6603
2536-9377
18
2
2014
09
01
Analytical Solution Developed for Predicting Transient Interface in Coastal Confined Aquifers
76
81
EN
10.21608/pserj.2014.45294
For predicting the transient fresh-salt water interface in confined coastal aquifers, an equation has been developed to estimate the advance of interface. The equation depends on; the densities of fresh and salt water, the hydraulic properties of the aquifer and the rate of flow of groundwater in the fresh-water region. The developed equation is applied on a confined aquifer example to compute the average advance of interface. The estimated analytical value is found to have the same order of magnitude and nearly equal to the value estimated using the Ghyben-Herzberg relation, where the deviation is about 0.02. The agreement is considered satisfactory, since the developed equation considers the hydraulic properties and the actual hydrological conditions of the aquifer. However, the developed analytical solution seems to be successful procedure to be applied for predicting the transient interface in confined coastal aquifers.<br /><br />
Confined coastal aquifer,analytical solution,prediction,transient interface
https://pserj.journals.ekb.eg/article_45294.html
https://pserj.journals.ekb.eg/article_45294_b9812f5f6e49a8795a4442c1cf2288ad.pdf
Port Said University, Faculty of Engineering
Port-Said Engineering Research Journal
1110-6603
2536-9377
18
2
2014
09
01
Solving the Upconing Pumping Problem and Hydrodynamic Dispersion in Coastal Unconfined Aquifers
81
90
EN
10.21608/pserj.2014.45295
In the present study, the salt-water up coning problem in coastal unconfined aquifers is investigated. The dimensional analysis is used to provide information about the optimum well depth and the optimum pumping rate for a well suggested to be partially penetrating a coastal unconfined aquifer example. The Bear and Todd’s method of superimposing the effects of hydrodynamic dispersion on the up coning system, is used to predict the concentration profile with depth below the pumped example well at a workable dispersivity of the aquifer. The results shows that, the concentration of pumped water is still suitable for irrigation under certain conditions. Comparison of the estimated salinity profile for the example well , with the measured salinity profile in a neighboring well drilled in the same area, indicates an order of magnitude agreement. The results encourage the use of the present solution methodology of the up coning pumping system problem as it seems to be extremely useful in the cases where the dispersion measurements are unavailable in the studied aquifer
Well drawdown,Radius of Influence,interface,Permissible Well Discharge,Dispersion Coefficient,Dispersivity,Transition Zone,Salt-Concentration of Groundwater,Coastal areas
https://pserj.journals.ekb.eg/article_45295.html
https://pserj.journals.ekb.eg/article_45295_5abe3b49ebe68350f57b9b4f17556434.pdf
Port Said University, Faculty of Engineering
Port-Said Engineering Research Journal
1110-6603
2536-9377
18
2
2014
09
01
EXPERIMENTAL INVESTIGATION OF STRENGTHENED SHORT CONCRETE COLUMNS
99
108
EN
KHALED
MOHAMED
MAHMOUD
1Graduate student, Suez Canal Authority, Port Said, Egypt
HASSAN
MOHAMED
HASSAN
Professor of concrete structures and the Chief Head of Civil Engineering Department at Port Said University, Port said
KAMAL
GAD
SHAROBEM
10.21608/pserj.2014.45296
Reinforced concrete (RC) columns in buildings often need strengthening either due to defects in the columns themselves, having to support higher loads than those foreseen in the initial design of the structure, or as the result of ageing or accidental damage. There are many methods of columns strengthening such as jackets with their different types. Jackets are often performed at construction sites by primitive methods, without taking into consideration the correct design or the requirements which should be implemented. At this research, two methods of strengthening have been studied experimentally: concrete jacketing and steel cage. The experimental study consisted of twenty specimens of 800 mm height, 100x100 mm cross section, and main reinforcement 4Ø6 mm with stirrups 7Ø4 mm/800mm. The specimens were strengthened by concrete and steel jackets. From the results of obtained capacity and mode of failure, some modifications were implemented on jacket to improve the efficiency of jackets.
RC columns,strengthening,concrete jacket,steel jacket
https://pserj.journals.ekb.eg/article_45296.html
https://pserj.journals.ekb.eg/article_45296_a777ae9c387d03192be776251d022694.pdf
Port Said University, Faculty of Engineering
Port-Said Engineering Research Journal
1110-6603
2536-9377
18
2
2014
09
01
Framework to Support Architectural Sustainability using Biomimicry (The Second Level
109
116
EN
Merhan
Mohammed
Shahda
0000-0002-1037-3420
Assistant lecturer in the Architecture and Urban Design Department, Faculty of Engineering, Port Said University
m.shahda@eng.psu.edu.eg
Ashraf
Abd Elfattah
Elmokadem
Professor of Architecture and Urban Design Department, Faculty of Engineering, Port Said University
Mostafa
Abd Elhafeez
10.21608/pserj.2014.45297
Through the study and analysis of the second level to Biomimicry, and try to exploit ways of the organism adapting with its environment, has been reached for the approaches. In this framework, research paper deals with an analysis for the main principles of environmental sustainability in the nature. Research proposed division environmental sustainability principles derived living organisms adapt with nature to four approaches. The aim of this research to submit a proposal for The methodological framework of using the second level of the Biomimicry levels to support architectural sustainability.
Biomimicry,Sustainability
https://pserj.journals.ekb.eg/article_45297.html
https://pserj.journals.ekb.eg/article_45297_22e5fedd24418a544aea847816062548.pdf
Port Said University, Faculty of Engineering
Port-Said Engineering Research Journal
1110-6603
2536-9377
18
2
2014
09
01
Biomimicry Levels as an Approach to The Architectural Sustainability
117
125
EN
10.21608/pserj.2014.45298
Certainly nature was and still the first teacher to humans and the main inspiration. Nature is a source of inspiration for architects as it is for scientists, for example: its consider source of inspiration for structures, building materials and systems of environmental and aesthetics. There aren‟t enough studies to conclude and devise solutions from nature to all areas of science and architecture. Branch of knowledge appeared called “Biomimicry” which mean (Nature Simulation) is an innovation method that seeks sustainable solutions by emulating nature's time-tested patterns . In this framework, research paper deals with nature as inspiration concept, Biomimicry concept, Biomimicry levels and approach in the field of architecture and The research presents a number of questions and try to answer them :<br /> What is Biomimicry?<br /> What are the Biomimicry Levels?<br /> How can use the Biomimicry to support Architectural sustainability ?????
Biomimicry,Sustainability
https://pserj.journals.ekb.eg/article_45298.html
https://pserj.journals.ekb.eg/article_45298_b668788516686388814ecca068311d80.pdf