International Journal of Energy and Power Engineering

Volume 3, Issue 5, October 2014

  • Online Tuning of Power System Stabilizers Using Fuzzy Logic Network with Fuzzy C-Means Clustering Prediction: A Case Study

    Mohammad Hajizade Kanafgorabi, Ali Karami

    Issue: Volume 3, Issue 5, October 2014
    Pages: 217-227
    Received: Aug. 26, 2014
    Accepted: Sep. 16, 2014
    Published: Sep. 30, 2014
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    Abstract: Power system stabilizers (PSS) has been widely used to enhance damping due to the electromechanical low frequency oscillations occurrence in power systems. In this paper, a new method is used for the online tuning of parameters of conventional power system stabilizers (CPSS) using fuzzy logic. Fuzzy logic enables mathematical modeling and computati... Show More
  • Islanding Detection in Micro-Grids Using Sum of Voltage and Current Wavelet Coefficients Energy

    Hossein Haroonabadi

    Issue: Volume 3, Issue 5, October 2014
    Pages: 228-236
    Received: Sep. 01, 2014
    Accepted: Sep. 24, 2014
    Published: Sep. 30, 2014
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    Abstract: This paper presents wavelet based islanding detection in distributed generation (DG) interfaced to the microgrid. Also a new fast method is developed for islanding detection based on measuring the utility currents and voltages signals processed by discrete wavelet transform. These currents and voltages signals are measured before the main circuit b... Show More
  • Predicting Heat Demand for a District Heating Systems

    Krzysztof Wojdyga

    Issue: Volume 3, Issue 5, October 2014
    Pages: 237-244
    Received: Aug. 31, 2014
    Accepted: Oct. 05, 2014
    Published: Oct. 20, 2014
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    Abstract: Poland is one of the heaviest users of district heating systems in Europe, and those district heating systems are heated mainly by coal. Sustainable development of district heating systems in Poland including improving quality of environment, economic of heat production and security of heat supply is in close connection with increasing of energy ef... Show More
  • Renewable Energy Sources and Turkey

    Ali Vardar, Onur Taskin

    Issue: Volume 3, Issue 5, October 2014
    Pages: 245-249
    Received: Sep. 09, 2014
    Accepted: Sep. 30, 2014
    Published: Oct. 30, 2014
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    Abstract: International economic competition is forcing countries for improving their technology. The main elements are knowledge and R&D for countries technological developments. However, the impulsion of development is “energy”. In this context, energy consumption is a one of the pointer for determine to development level of a country. Renewable energies a... Show More
  • Development of Small Scale Screw Extrusion Machine for Production of Sawdust Briquettes in Rural Area in Indonesia

    Anak Agung Putu Susastriawan, Bambang Wahyu Sidharta

    Issue: Volume 3, Issue 5, October 2014
    Pages: 250-253
    Received: Sep. 08, 2014
    Accepted: Oct. 21, 2014
    Published: Oct. 30, 2014
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    Abstract: Small scale screw extrusion machine is designed and tested for making compact sawdust briquettes in rural area in Indonesia. The extrusion machine is powered by 5,5 HP gasoline internal combustion engine. In this work, briquetting machine is used to produce sawdust briquettes which two different ratios of starch-sawdust. The ratios of starch to saw... Show More
  • Assessment of Renewable Energy and Emissions from Domestic Sewage Treatment in Brazil

    Fatima Aparecida de Morais Lino, Kamal Abdel Radi Ismail

    Issue: Volume 3, Issue 5, October 2014
    Pages: 254-260
    Received: Sep. 25, 2014
    Accepted: Oct. 29, 2014
    Published: Nov. 10, 2014
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    Abstract: With the growth of the world population, in recent decades, the generation of domestic sewage has increased. In Brazil about 28 million cubic meters of sewage are generated daily and needs to be collected and treated. This task has been one of the biggest challenges for municipal administrators. Disposition of domestic sewage without treatment is a... Show More
  • Reducing Energy Consumption by Considering the “Wisdom of the Crowd”: USA and China Study

    Ali Hashemi Araghi, Ehssan Sakhaee

    Issue: Volume 3, Issue 5, October 2014
    Pages: 261-265
    Received: Nov. 02, 2014
    Accepted: Nov. 06, 2014
    Published: Nov. 20, 2014
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    Abstract: Effective implementation of useful schemes that are readily accepted and implemented by a society for change require investigating the perceptions of problems and solutions as seen by a society, primarily those who are stakeholders and are most affected by change. This research aims to investigate the perceived problems and solutions of energy cons... Show More
  • State Estimation of the Tanzanian Power System Network Using Non-Quadratic Criterion and MATLAB Environment

    Mashauri Adam Kusekwa

    Issue: Volume 3, Issue 5, October 2014
    Pages: 266-276
    Received: Nov. 12, 2014
    Accepted: Nov. 17, 2014
    Published: Nov. 21, 2014
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    Abstract: Power system state estimation is an effective online tool for monitoring, control and for providing consistent database in energy management systems. This paper presents an algorithm for state estimation of the Tanzanian power system network using a non-quadratic state criterion. Equality and inequality constraints existing in a power system are in... Show More