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Development of Matlab-Based Software for Peak Load Estimation and Forecasting: A Case Study of Faculty of Engineering, Imo State University Owerri, Imo State, Nigeria
Idorenyin Markson,
Obinwa Christian Amaefule,
Umoren Ifiok Anthony
Issue:
Volume 5, Issue 6, December 2016
Pages:
40-45
Received:
6 August 2014
Accepted:
28 October 2014
Published:
14 January 2017
Abstract: Peak load demand is used in energy demand management to describe a period in which electrical power is expected to be provided for a sustained period at a significantly higher than average supply level. In power system development planning, effort is made to accurately estimate the immediate peak load demand as well as forecast the future peak load demands for more years ahead. This is usually meant to prevent overloading in power systems, which when they occur often cause more harm and would require more resources to fix. In this paper, a MATLAB-based software is developed for peak load estimation and forecasting. A case study of faculty of Engineering in Imo State University (IMSU) Owerri is selected for the data collection and testing of the software. The software has a user-friendly peak load estimation module for collecting and estimating the peak load based on the power rating of electrical appliances in the faculty. Then a versatile load forecasting module is also designed to forecast the future peak load demand based on the present peak load. In all, for any selected forecast period, the software generates the existing peak load estimation and forecasted peak load values in tables and graphs.
Abstract: Peak load demand is used in energy demand management to describe a period in which electrical power is expected to be provided for a sustained period at a significantly higher than average supply level. In power system development planning, effort is made to accurately estimate the immediate peak load demand as well as forecast the future peak load...
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Nuclear Power’s Potential for Carbon Emission Reduction in Chinese Mainland Based on Real Data and Scenario Analysis
Issue:
Volume 5, Issue 6, December 2016
Pages:
46-55
Received:
23 November 2016
Accepted:
10 December 2016
Published:
16 January 2017
Abstract: China's economic growth prompted the increase in carbon emissions for the past years, which has been caught the attention from the government. Actually, a large share of China's carbon emissions is produced by the electricity sector. And that means the electricity sector plays a key role in emission reduction. Carbon emission reductions during 2009 to 2013 have been estimated and calculated in this paper, and nuclear power shows the potential for emission reductions. Then, China’s nuclear power potentials for carbon emission reduction from 2015 to 2025 have been predicted and expected under three scenarios. Finally, conclusions show emission reductions under the American scenario is highest. However, only 2% of China’s energy is from the atom, which should be paid more attention to. On executive orders and policies, the Chinese Government should provide more and substantial supports for China’s nuclear power development.
Abstract: China's economic growth prompted the increase in carbon emissions for the past years, which has been caught the attention from the government. Actually, a large share of China's carbon emissions is produced by the electricity sector. And that means the electricity sector plays a key role in emission reduction. Carbon emission reductions during 2009...
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The Wear of Cutting Pellets Coated with TiAlN During Machining of a Cobalt Superalloy (FSX-414)
Issue:
Volume 5, Issue 6, December 2016
Pages:
56-60
Received:
6 December 2016
Accepted:
23 December 2016
Published:
23 January 2017
Abstract: For the machining of superalloys, unconventional methods such as electroerosion, electrochemistry and others are frequently used due to the hardness of the material. Although, for some other operations, theconventional machining is essential. Because of their high hardness and improved mechanical properties, these superalloys require specific materials means such as machines and tools. To get an idea of the behavior of such a material in particular fields such as gas turbines, nuclear reactors, the industrialists have been interested for many years in the development and characterization of new materials to optimize the wear of the cutting tools and produce at a lower cost. In this context, the study of the tribological behavior of the cobalt-based superalloy FSX-414 standard 9001F in contact with the TiAlN-coated carbide inserts provides important information in the case of the turbine blade industry. The article discusses the productivity of gas turbine blades of the thermal power plant electricity production. The material to be machined is a superalloy which requires a carbide tool with adequate coating (TiN, TiC, TiAlN, TiCN...). This research eté preceded by an article about the couple material / tool (FSX-414 / TiN coated carbide). A comparison of results has been made to optimize the cutting process and start production with lower cost. The lifetime of the cutting tool is mainly related to the development of two types of wear: flankwear of the sidewall and crater wear. This phenomenon of wear seems to be progressive, it develops during the cutting, which affects the quality of the machining, the productivity, and in particularly it may lead to the destruction of the tool in case of excessive wear. For the measurement of wear, an indirect method is used by coupling a Touptek photon camera to a microscope and capture the image to be processed by Toupview analysis software. It has been shown that the coating is the most influential parameter, followed by the sliding velocity. In this context, a focused research on the wear of TiAlN-coated Platelets in contact with this superalloy which is resistant to wear at high temperature has been developed.
Abstract: For the machining of superalloys, unconventional methods such as electroerosion, electrochemistry and others are frequently used due to the hardness of the material. Although, for some other operations, theconventional machining is essential. Because of their high hardness and improved mechanical properties, these superalloys require specific mater...
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Development of Matlab-Based Software for the Design of the Electric Circuit of Three-Phase Power Transformer
Ezenugu Isaac A.,
Idorenyin Markson,
Bliss Utibe-Abasi Stephen
Issue:
Volume 5, Issue 6, December 2016
Pages:
61-67
Received:
6 August 2014
Accepted:
4 January 2017
Published:
2 February 2017
Abstract: Power transformers are crucial components in electric power systems, as such, it is required that they are built to highest standards of precision and quality and designed for a long life-time. As the average age of these transformers is in the range of 30 to 40 years in many countries, the probability of malfunction is on the rise. This situation is accentuated by the trend of operating transformers closer to their performance limits, adding to their vulnerability if adequate countermeasures are not taken. In this paper, MATLAB-based software was developed for automatic computation of the electric circuit parameters of a three phase power transformer once the input specifications are supplied. A sample design problem was used to demonstrate the effectiveness of the program. The automated computation program was developed using the mathematical models derived for the various parameters to be determined. Apart from its flexibility and speed, the program removed the drudgery involved in the design. In addition, the MATLAB-based software presented in this paper will serve as a useful teaching and laboratory tool for undergraduate courses in transformer design.
Abstract: Power transformers are crucial components in electric power systems, as such, it is required that they are built to highest standards of precision and quality and designed for a long life-time. As the average age of these transformers is in the range of 30 to 40 years in many countries, the probability of malfunction is on the rise. This situation ...
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