International Journal of Energy and Power Engineering

Volume 3, Issue 3, June 2014

  • Busbar Protection Scheme Based on Alienation Coefficients for Current Signals

    R. Abd Allah

    Issue: Volume 3, Issue 3, June 2014
    Pages: 103-115
    Received: Apr. 20, 2014
    Accepted: May 08, 2014
    Published: May 20, 2014
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    Abstract: In modern digital power system protection systems, statistical coefficients technique is recently used for fault analysis. An alienation technique is developed for busbar protection against all ten types of shunt faults, which may locate in busbar protection zone, under different loading levels, fault resistances and fault inception angle. It does ... Show More
  • A New Scheme Based on Correlation Technique for Generator Stator Fault Detection-Part І

    R. Abd Allah, S. M. Mohamed, E. H. Shehab-Eldin, M. E. MASOUD

    Issue: Volume 3, Issue 3, June 2014
    Pages: 116-124
    Received: Apr. 20, 2014
    Accepted: May 13, 2014
    Published: May 30, 2014
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    Abstract: In modern digital protection systems, a correlation technique is recently used for study and analysis. In this paper, a correlation technique is developed for fault detection, classification and direction discrimination. The proposed technique is able accurately to identify the different types of faults that may occur in synchronous generator stato... Show More
  • Reduced Losses in PV Converters by Modulation of the DC Link Voltage

    Alex Van den Bossche, Jean Marie Vianney Bikorimana, Firgan Feradov

    Issue: Volume 3, Issue 3, June 2014
    Pages: 125-131
    Received: Apr. 17, 2014
    Accepted: May 27, 2014
    Published: May 30, 2014
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    Abstract: The efficiency of PV systems has improved by the fact that the researchers have used different techniques to increase their technical capabilities. This paper aims to present how the PV converter losses can be reduced by employing a polypropylene capacitor in the DC link and to modulate that DC voltage. This modification leads to problems with cont... Show More
  • Seasonal Peak Characteristic Comparison Analysis by Hourly Electricity Demand Model

    Yusri Syam Akil, Hajime Miyauchi

    Issue: Volume 3, Issue 3, June 2014
    Pages: 132-138
    Received: May 09, 2014
    Accepted: May 29, 2014
    Published: Jun. 10, 2014
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    Abstract: As driver variables may influence more than one area of electricity demand, knowing typical effect of the variables on certain demand areas is important. Utilities can use the information of managing power systems to meet electricity demand for different areas more effective. Based on the regression analysis approach, this study presents a peak dem... Show More
  • Analytical Investigations of Thermo-Geometrical Parameters Effects on Heat Transfer and Performance of Longitudinal Radiating Fin

    Bayo Yemisi Ogunmola, Gbeminiyi Sobamowo

    Issue: Volume 3, Issue 3, June 2014
    Pages: 139-146
    Received: May 07, 2014
    Accepted: May 15, 2014
    Published: Jun. 20, 2014
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    Abstract: In this work, analytical models are developed for determining temperature distribution, heat transfer and the efficiency of radiating fin. The developed models are used to investigate the effects of various thermo-geometric properties on the temperature distribution and consequently on the performance of the radiating fin. The effects of fin tip co... Show More
  • A New Scheme Based on Correlation Technique for Generator Stator Fault Detection-Part π

    R. Abd Allah, S. M. Mohamed, E. H. Shehab-Eldin, M. E. Masoud

    Issue: Volume 3, Issue 3, June 2014
    Pages: 147-153
    Received: Apr. 20, 2014
    Accepted: May 08, 2014
    Published: Jul. 10, 2014
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    Abstract: An experimental model for the synchronous generator was implemented and windings tapped at different positions to obtain faults at different locations on the stator windings. LABVIEW was used to obtain an interface between the experimental model and the suggested digital relay; whereas the proposed algorithm is executed using MATLAB. The obtained e... Show More
  • The Analysis of Diesel Engine Intake System Simulation Based on Multivariate Joint Optimization

    REN Hongjuan, Wang Huilong, LUO Yiping

    Issue: Volume 3, Issue 3, June 2014
    Pages: 154-157
    Received: May 07, 2014
    Accepted: May 20, 2014
    Published: Jul. 10, 2014
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    Abstract: The paper was based on multivariable joint optimization. It established an optimization process of diesel engine intake system. The simulation model was built in AVL-BOOST and tested by experiments. As the design variables of intake system parameters (diameter and length of intake duct and intake manifold) were used to orthogonal test. Through the ... Show More
  • The Application Status and Prospects of Vibro Ripper

    Wang Kaile, Yang Guoping, Hu Kaijun, Wang Kai, Cao Guojun

    Issue: Volume 3, Issue 3, June 2014
    Pages: 158-161
    Received: Jun. 19, 2014
    Accepted: Jul. 03, 2014
    Published: Jul. 10, 2014
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    Abstract: Vibro ripper is a new pattern of breaker hammer, The hydraulic pump is the power source, Hydraulic oil as the working medium. By the hydraulic energy into mechanical energy of actuator mechanism, It works by the impact force, Vibro ripper combined with the use of excavators. The crushing effect is amazing. This paper introduced the domestic of rese... Show More