Template-Type: ReDIF-Article 1.0
Author-Name: Reza Sirous
Author-X-Name-First: Reza
Author-X-Name-Last: Sirous
Author-Name: Rui Borges Lopes
Author-X-Name-First: Rui Borges
Author-X-Name-Last: Lopes
Title: A framework to identify and overcome barriers in launching sustainable energy projects in the Iranian industrial sector
Abstract:
Iranian resistance economy policy embodies a strong focus on sustainable development and, respectively, in energy sustainability. A major issue in implementing the policy is how to facilitate the deployment of sustainability initiatives and eliminate existing barriers. This paper presents a framework for identifying and attempting overcoming these barriers using soft systems methodology (SSM). The proposed framework also integrates other methods and is called compound sustainable energy launching (CSEL). This multi-methodology framework aims not only eliminating energy sustainability barriers but also an efficient assignment of capital investment on such initiatives. Applicability of the framework is analysed on three Iranian companies of the industrial sector, for which main conclusions are presented and discussed.
Journal: Int. J. of Energy Technology and Policy
Pages: 1-30
Issue: 1
Volume: 15
Year: 2019
Keywords: energy; energy sustainability; multi-methodology; barriers in sustainability; capital investment; Iran.
File-URL: http://www.inderscience.com/link.php?id=96607
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Handle: RePEc:ids:ijetpo:v:15:y:2019:i:1:p:1-30

Template-Type: ReDIF-Article 1.0
Author-Name: Mohammed Moness
Author-X-Name-First: Mohammed
Author-X-Name-Last: Moness
Author-Name: Ahmed Mahmoud Moustafa
Author-X-Name-First: Ahmed Mahmoud
Author-X-Name-Last: Moustafa
Title: A critical review of research trends for wind energy in Egypt: recent progress and promising opportunities
Abstract:
Energy is a cornerstone for achieving industrial development and prosperous economy. Wind energy has the biggest share of renewable energy sector in many countries leading the way for replacing fossil fuels. Egypt, as one of the developing countries, is heading towards increasing penetration levels of wind power to face energy challenges. This strategy takes advantage of the investigated high potential of wind energy in several locations across Egypt. In order to gain most benefits and economical revenues from wind energy, a national research and development policies have to be deployed. Effective research policies enhance the capabilities of local industry for wind power technology. This review characterises current progress and categorises areas of interest for recent research of wind energy in Egypt. Accordingly, a vision for existing gaps, futuristic directions and promising areas for research is formulated.
Journal: Int. J. of Energy Technology and Policy
Pages: 31-70
Issue: 1
Volume: 15
Year: 2019
Keywords: renewable energy; wind energy; wind energy potential; wind power technology; Egypt.
File-URL: http://www.inderscience.com/link.php?id=96608
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Handle: RePEc:ids:ijetpo:v:15:y:2019:i:1:p:31-70

Template-Type: ReDIF-Article 1.0
Author-Name: Abdelhamid Ksentini
Author-X-Name-First: Abdelhamid
Author-X-Name-Last: Ksentini
Author-Name: ElBahi Azzag
Author-X-Name-First: ElBahi
Author-X-Name-Last: Azzag
Author-Name: Ahmed Bensalem
Author-X-Name-First: Ahmed
Author-X-Name-Last: Bensalem
Title: Sizing and optimisation of a photovoltaic pumping system
Abstract:
The geographical location of Algeria promotes the development and growth of the use of solar energy. Indeed, it gives the importance of the intensity of the radiation received and the duration of sunshine that exceeds ten hours a day for several months, our country can cover some of the needs in solar energy, these advantages could be beneficial in the most remote regions especially in applications of photovoltaic pumping. Many people in rural areas of developing countries face major water problems. These problems are especially pronounced in desert and semi-desert regions. The water shortage in arid and semi-arid areas is a vital issue for people. Improving living conditions in these areas is linked to the search for adequate solutions to the problem. The solar photovoltaic pump is the ideal solution for water supply where traditional power is not available. We presented in this work, the modelling and the dimensioning of a photovoltaic pumping system constituted by an asynchronous motor with cage coupled to a centrifugal pump. We will then opt to use a system adopting MPPT optimisation method, namely the fuzzy logic control. The set is powered by a photovoltaic generator (PVG) through two static converters (chopper DC/DC, PWM inverter) controlled independently.
Journal: Int. J. of Energy Technology and Policy
Pages: 71-85
Issue: 1
Volume: 15
Year: 2019
Keywords: photovoltaic conversion system; MPPT; chopper; multi-levels inverter NPC; asynchronous machine; water pumping.
File-URL: http://www.inderscience.com/link.php?id=96619
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Handle: RePEc:ids:ijetpo:v:15:y:2019:i:1:p:71-85

Template-Type: ReDIF-Article 1.0
Author-Name: Priyanka Anand
Author-X-Name-First: Priyanka
Author-X-Name-Last: Anand
Author-Name: Sarbjeet Kaur Bath
Author-X-Name-First: Sarbjeet Kaur
Author-X-Name-Last: Bath
Author-Name: Mohammad Rizwan
Author-X-Name-First: Mohammad
Author-X-Name-Last: Rizwan
Title: Renewable energy-based hybrid model for rural electrification
Abstract:
The distributed power generation is playing an important role for the rural electrification in developing countries like India. In this work, a hybrid model based on renewable energy sources has been developed on the basis of availability of the resources at the proposed site. This paper present the hybrid model based on biomass-biogas-solar PV to supply the electric power in rural areas of Sonipat, Haryana, India where grid supply is not available or rarely available. The hybrid system is modelled by considering various parameters associated with each system component. Different models are developed on the basis of available resources and optimised for total annualised cost (TAC) using particle swarm optimisation (PSO) approach. Obtained results shows that the TAC of the optimal configuration at 0% unmet load is $ 64,109 and the cost of energy is $ 0.065 per kWh. The results at various unmet loads are also presented and found satisfactory. The results of the proposed approach are compared with harmony search (HS) algorithm and found in the desired limits.
Journal: Int. J. of Energy Technology and Policy
Pages: 86-113
Issue: 1
Volume: 15
Year: 2019
Keywords: biomass; hybrid modelling; renewable energy; solar energy; total annualised cost; unmet load.
File-URL: http://www.inderscience.com/link.php?id=96633
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Handle: RePEc:ids:ijetpo:v:15:y:2019:i:1:p:86-113

Template-Type: ReDIF-Article 1.0
Author-Name: Mouna Lamnadi
Author-X-Name-First: Mouna
Author-X-Name-Last: Lamnadi
Author-Name: Mourad Trihi
Author-X-Name-First: Mourad
Author-X-Name-Last: Trihi
Author-Name: Abdelkader Boulezhar
Author-X-Name-First: Abdelkader
Author-X-Name-Last: Boulezhar
Author-Name: Badre Bossoufi
Author-X-Name-First: Badre
Author-X-Name-Last: Bossoufi
Title: Optimal design of stand-alone hybrid power system using wind and solar energy sources
Abstract:
Stand-alone hybrid renewable energy systems are more reliable than one-energy source systems. However, their design is crucial. For this reason, a new methodology with simulation having as aim to design an autonomous hybrid PV-wind-battery system is proposed. Based on a triple multi-objective, the present methodology combines life cycle cost (LCC), embodied energy (EE) and loss of power supply probability (LPSP). For a location, meteorological and load data have been collected and assessed. Afterwards, components of the system and optimisation objectives have been modelled. Finally, an optimal configuration has been put in place using a dynamic model and applying a controlled elitist genetic algorithm for multi-objective optimisation. This methodology has been applied successfully for the sizing of a PV-wind-battery system to supply at least 95% of yearly total electric demand of a residential house.
Journal: Int. J. of Energy Technology and Policy
Pages: 280-300
Issue: 2/3
Volume: 15
Year: 2019
Keywords: hybrid power system; dynamic simulation; multi-objective design; optimisation.
File-URL: http://www.inderscience.com/link.php?id=98954
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Handle: RePEc:ids:ijetpo:v:15:y:2019:i:2/3:p:280-300

Template-Type: ReDIF-Article 1.0
Author-Name: Yu Sang Chang
Author-X-Name-First: Yu Sang
Author-X-Name-Last: Chang
Author-Name: Seongmin Jeon
Author-X-Name-First: Seongmin
Author-X-Name-Last: Jeon
Author-Name: Nei Hei Park
Author-X-Name-First: Nei Hei
Author-X-Name-Last: Park
Title: Do time phase and income influence the convergence in energy intensity? A cross-country analysis
Abstract:
Countries' energy intensity levels are known to converge at both global and regional levels. We test the convergence in energy intensity using a large recent dataset: a 151-country sample during the period of 1980-2010. In addition, time phase and income are examined to identify the factors that influence a country's aggregate level of energy intensity. With income time-phased analysis, we discovered a pronounced convergence during the period between 1980 and 1990 and then a moderate convergence later during the period. With the subgroup analysis, middle income yields the most rapid convergence. Furthermore, high income's negative role is so pervasive that non-convergence or divergence may take place.
Journal: Int. J. of Energy Technology and Policy
Pages: 301-319
Issue: 2/3
Volume: 15
Year: 2019
Keywords: energy intensity; convergence; time phased; income; distribution dynamics.
File-URL: http://www.inderscience.com/link.php?id=98955
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Handle: RePEc:ids:ijetpo:v:15:y:2019:i:2/3:p:301-319

Template-Type: ReDIF-Article 1.0
Author-Name: Seyi Saint Akadiri
Author-X-Name-First: Seyi Saint
Author-X-Name-Last: Akadiri
Author-Name: Festus Victor Bekun
Author-X-Name-First: Festus Victor
Author-X-Name-Last: Bekun
Author-Name: Elham Taheri
Author-X-Name-First: Elham
Author-X-Name-Last: Taheri
Author-Name: Ada Chigozie Akadiri
Author-X-Name-First: Ada Chigozie
Author-X-Name-Last: Akadiri
Title: Carbon emissions, energy consumption and economic growth: a causality evidence
Abstract:
Recently, there has been a growing interest on environmental issues, due to climatic-based problems associated with escalated levels of pollution and degradation of the environmental quality. This is widely believed to be caused by increased economic and human activities. The primary focus of this paper is to examine the causal and long-run relationship between carbon emissions, energy consumption and economic growth for Iraq. We apply the bounds test for cointegration and Toda-Yamamoto for a Granger causality test using annual data for the period from 1972 to 2013. The sample coverage is restricted by data unavailability. Empirical results propose unidirectional causality running from economic growth to energy consumption and from carbon emissions to energy consumption in the long-run. Findings reveal that there is no feedback relationship between economic growth, carbon emissions and energy consumption of Iraq.
Journal: Int. J. of Energy Technology and Policy
Pages: 320-336
Issue: 2/3
Volume: 15
Year: 2019
Keywords: carbon-emissions; energy consumption; economic growth; Granger causality; Iraq.
File-URL: http://www.inderscience.com/link.php?id=98956
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Handle: RePEc:ids:ijetpo:v:15:y:2019:i:2/3:p:320-336

Template-Type: ReDIF-Article 1.0
Author-Name: Chawalit Jeenanunta
Author-X-Name-First: Chawalit
Author-X-Name-Last: Jeenanunta
Author-Name: K. Darshana Abeyrathna
Author-X-Name-First: K. Darshana
Author-X-Name-Last: Abeyrathna
Title: Neural network with genetic algorithm for forecasting short-term electricity load demand
Abstract:
Short-term load forecasting is to forecast the next day electricity demand for 48 periods and it is important to make decisions related to the electricity generation and distribution. Neural network (NN) is selected for forecasting the future electricity consumption since its ability of recognising and learning nonlinear patterns of data. This research proposes the combination usage of genetic algorithm (GA) to train the neural network and results are compared with the results from backpropagation. Data from the electricity generating authority of Thailand (EGAT) is used in this research to demonstrate the performance of the proposed technique. The dataset contains weekday (excluding Mondays) load demand from 1st of October to 30th of November 2013. November load is forecasted using an NN with 192 inputs and 48 outputs. Even though GA takes more time for training neural networks, it gives better results compared to backpropagation.
Journal: Int. J. of Energy Technology and Policy
Pages: 337-350
Issue: 2/3
Volume: 15
Year: 2019
Keywords: genetic algorithm; GA; encoding; neural network; NN; optimising neural network's weights; forecasting; short-term load forecasting; STLF.
File-URL: http://www.inderscience.com/link.php?id=98957
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Handle: RePEc:ids:ijetpo:v:15:y:2019:i:2/3:p:337-350

Template-Type: ReDIF-Article 1.0
Author-Name: Ranvir Kaur
Author-X-Name-First: Ranvir
Author-X-Name-Last: Kaur
Author-Name: Gursewak Singh Brar
Author-X-Name-First: Gursewak Singh
Author-X-Name-Last: Brar
Title: Carrier shifting algorithm creating virtual frequency upsurge to reduce switching losses in multi-inverter fed induction motor drives
Abstract:
Power electronics applications delve the induction motor drives posing a challenge for researchers to minimise the harmonic content thereby improving the power quality. In this paper, three level voltages are generated by cascading dual two-level voltage source inverters (VSI) with phase shift in their carrier waves. Phase shifted dual two-level inverter is used for total harmonic distortion (THD) reduction and shifting of side band harmonics. Multi inverters, they can be used for high mega volt-ampere ratings. The proposed dual inverter circuit arrangement is tested for 5-hp induction motor. The prototype is designed in MATLAB/simulink and is experimentally verified with TMS320F28377 DSP platform for wide range of speed control of induction motor.
Journal: Int. J. of Energy Technology and Policy
Pages: 116-133
Issue: 2/3
Volume: 15
Year: 2019
Keywords: sinusoidal pulse width modulation; total harmonic distortion; THD; side band harmonics; three level voltage source inverter; phase shifting carriers; high switching frequency; multi inverters; induction motor drives.
File-URL: http://www.inderscience.com/link.php?id=98959
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Handle: RePEc:ids:ijetpo:v:15:y:2019:i:2/3:p:116-133

Template-Type: ReDIF-Article 1.0
Author-Name: V. Murali
Author-X-Name-First: V.
Author-X-Name-Last: Murali
Author-Name: K. Rama Sudha
Author-X-Name-First: K. Rama
Author-X-Name-Last: Sudha
Title: A novel operating strategy for unscheduled interchange price-based automatic generation control
Abstract:
In order to maintain grid discipline and bring about more responsibility and accountability among the participants in the system, the availability-based tariff (ABT) mechanism was introduced in Indian power sector. Though there is a considerable improvement, it is further required to maintain the system with greater frequency stability and reduced fuel cost for power generation. This paper presents a control scheme for unscheduled interchange (UI) price-based automatic generation control (AGC) to nullify the deviations in frequency following a disturbance in the system. This scheme gives the system operator flexibility to schedule the generations in a desired manner on various units by which the merit order dispatch can be maintained. The proposed scheme is tested on a single area system with four generating units and is compared with an existing system and found effective. The results indicate that the frequency is maintained at normal value following a disturbance and the increased load can be shared among the generators in a desired manner.
Journal: Int. J. of Energy Technology and Policy
Pages: 134-147
Issue: 2/3
Volume: 15
Year: 2019
Keywords: availability-based tariff; ABT; generation control error; GCE; marginal cost; merit order dispatch; unscheduled interchange price.
File-URL: http://www.inderscience.com/link.php?id=98960
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Handle: RePEc:ids:ijetpo:v:15:y:2019:i:2/3:p:134-147

Template-Type: ReDIF-Article 1.0
Author-Name: K. Padmavathi
Author-X-Name-First: K.
Author-X-Name-Last: Padmavathi
Author-Name: K. Rama Sudha
Author-X-Name-First: K. Rama
Author-X-Name-Last: Sudha
Title: Optimal sizing and placement of dynamic voltage restorer in the distribution system using firefly algorithm
Abstract:
To enhance the power quality and reliability of electric power delivered to the end users, the electric distribution system is utilising the custom power devices. The power loss and voltage profile evaluates the performance of distribution system. In this paper a heuristic optimisation technique known as firefly algorithm is applied for the optimal location and sizing of dynamic voltage restorer (DVR). The steady state model of DVR is derived to use in forward/backward sweep load flow method. The performance of the proposed method is tested on IEEE 33 bus and 69 bus Radial Distribution systems by using MATLAB software. The obtained results are compared with immune algorithm. The proposed method boost up the voltage profile minimised the power loss and the installation cost of DVR.
Journal: Int. J. of Energy Technology and Policy
Pages: 148-165
Issue: 2/3
Volume: 15
Year: 2019
Keywords: backward/forward sweep; dynamic voltage restorer; DVR; firefly algorithm; power quality; voltage source converter.
File-URL: http://www.inderscience.com/link.php?id=98961
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Handle: RePEc:ids:ijetpo:v:15:y:2019:i:2/3:p:148-165

Template-Type: ReDIF-Article 1.0
Author-Name: Vladimir Viktorovich Voronin
Author-X-Name-First: Vladimir Viktorovich
Author-X-Name-Last: Voronin
Author-Name: Oleg Andreevich Davydov
Author-X-Name-First: Oleg Andreevich
Author-X-Name-Last: Davydov
Title: Technical objects diagnostics systems organising
Abstract:
While operating, repair and reconstruction works, maintaining particular level of technical objects' reliability, are carried out. Diagnostic systems are expected to be involved in these activities. As there are a great variety of technical objects available nowadays, diagnostic systems are based on wide variety of principles. Among them neural network technology and expert system technology are the most multi-purpose. A number of particular problems, expected to be solved in developing of diagnostic systems based on technologies mentioned above, is considered in these article; namely: rationing of diagnostic indicators, creating of general purpose functional framework for evaluating particular parameters, developing of neural functional network diagnostic system, developing of two fragments of conceptual diagnostic model, describing diagnostic context and diagnostic parameters in expert system database.
Journal: Int. J. of Energy Technology and Policy
Pages: 166-179
Issue: 2/3
Volume: 15
Year: 2019
Keywords: technical object of diagnosis; diagnostic parameters; neural network technology; diagnostic system.
File-URL: http://www.inderscience.com/link.php?id=98962
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Handle: RePEc:ids:ijetpo:v:15:y:2019:i:2/3:p:166-179

Template-Type: ReDIF-Article 1.0
Author-Name: Evgenia Y. Sizganova
Author-X-Name-First: Evgenia Y.
Author-X-Name-Last: Sizganova
Author-Name: Dmitry V. Antonenkov
Author-X-Name-First: Dmitry V.
Author-X-Name-Last: Antonenkov
Author-Name: Denis B. Solovev
Author-X-Name-First: Denis B.
Author-X-Name-Last: Solovev
Title: Energy-saving efficiency and potential in educational establishments of Neryungrinsky Region
Abstract:
A method of establishing the energy survey (energy audit) order for facilities with irrational energy consumption based on parametric rank distribution interval estimation was examined. The method will enable revealing and targeted dealing with the 'weakest' infrastructure facilities of budget organisations and municipal-level establishments. The method is realised in MathCAD package and demonstrated on the example of the infrastructure of Neryungrinsky Region educational establishments. The paper provides calculations of programs with comments that are used to form a rank parametric distribution matrix, a vector of ranks and a rank matrix for infrastructure facilities of Neryungrinsky Region educational establishments designed for rank energy consumption analysis implementation; the paper also shows the consistency of movement of facilities over the rank surface during transition from one time interval to another.
Journal: Int. J. of Energy Technology and Policy
Pages: 180-193
Issue: 2/3
Volume: 15
Year: 2019
Keywords: irrational energy consumption; energy audit; interval estimation; rank analysis; energy-saving potential.
File-URL: http://www.inderscience.com/link.php?id=98963
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Handle: RePEc:ids:ijetpo:v:15:y:2019:i:2/3:p:180-193

Template-Type: ReDIF-Article 1.0
Author-Name: En Un Chye
Author-X-Name-First: En Un
Author-X-Name-Last: Chye
Author-Name: Alexey Viktorovitch Levenets
Author-X-Name-First: Alexey Viktorovitch
Author-X-Name-Last: Levenets
Author-Name: Viktor Eduardovich Ivanov
Author-X-Name-First: Viktor Eduardovich
Author-X-Name-Last: Ivanov
Title: The basic principles of increasing in efficiency of data compressing in information-measuring systems
Abstract:
This article gives a brief analysis of theoretical works in the field of the theory of information-measuring systems with data compression. It is shown that when developing the problems of compression of measurement data, digital methods are practically not considered. A critical analysis of the methods of compression of measurement data is carried out. The limitations of the modern approach to data compression are shown. A model of a compression subsystem for measuring data is proposed that allows describing the compression and recovery subsystems that implement the proposed basic principles of working with measurement data. Some of the principles that allow developing effective methods for compressing measurement data are proposed.
Journal: Int. J. of Energy Technology and Policy
Pages: 194-207
Issue: 2/3
Volume: 15
Year: 2019
Keywords: measurement data; data compressing; informational-measurement system; IMS; compression subsystem model.
File-URL: http://www.inderscience.com/link.php?id=98964
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Handle: RePEc:ids:ijetpo:v:15:y:2019:i:2/3:p:194-207

Template-Type: ReDIF-Article 1.0
Author-Name: Vladimir F. Filaretov
Author-X-Name-First: Vladimir F.
Author-X-Name-Last: Filaretov
Author-Name: Alexander Yu Konoplin
Author-X-Name-First: Alexander Yu
Author-X-Name-Last: Konoplin
Author-Name: Nikita Yu Konoplin
Author-X-Name-First: Nikita Yu
Author-X-Name-Last: Konoplin
Title: System for automatic soil sampling by AUV equipped with multilink manipulator
Abstract:
The development and research of the new synthesis method of the control system for an autonomous underwater vehicle (AUV) with a multilink manipulator is described in the paper. This system provides an automatic soil sampling and the taking of geological samples of a sea bottom surface. In automatic mode, the developed system defines the location of a bottom surface relative to the AUV by means of the onboard multibeam Doppler lag. During the vehicle immersion, the system evaluates the complexity of the bottom relief in the working area and makes decision on the suitability of the said relief for the trouble-free implementation of the specified manipulative tasks. Also, the proposed system realises the formation algorithm for spatial trajectories of the multilink underwater manipulator's working tool and defines the AUV spatial orientation and position at which the performing of manipulation operations occurs most efficiently and safely.
Journal: Int. J. of Energy Technology and Policy
Pages: 208-223
Issue: 2/3
Volume: 15
Year: 2019
Keywords: control system; autonomous underwater vehicle; AUV; multilink manipulator; automatic mode; Doppler lag; underwater research; manipulation operations; soil sampling; trajectory planning; deep-sea.
File-URL: http://www.inderscience.com/link.php?id=98965
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Handle: RePEc:ids:ijetpo:v:15:y:2019:i:2/3:p:208-223

Template-Type: ReDIF-Article 1.0
Author-Name: Aiamunoori Manmadhachary
Author-X-Name-First: Aiamunoori
Author-X-Name-Last: Manmadhachary
Author-Name: P.S.M.C. Chanakya
Author-X-Name-First: P.S.M.C.
Author-X-Name-Last: Chanakya
Title: A method to minimise the energy consumption of an industrial robot
Abstract:
This paper presents an efficient methodology for minimising the energy or power consumption of industrial robot arm. A popular industrial robot is taken as an example to do the analysis, the dimensions of this robot are used to find the joint angles through inverse kinematics, these are used to form energy function. The energy function is dependent on joint angles of the arm, which are derived from the inverse kinematics, and control attributes like friction between joints, movement, settling time and forces acting on the joints. Optimising the energy function will give a set of joint angles which consume minimal energy to perform the required task and also help to predict which optimisation technique (genetic algorithm, artificial neural networks and analytical hierarchy process) is suitable or gives better results for the desired need. In this work the energy function value is reduced by 11% from the original base value.
Journal: Int. J. of Energy Technology and Policy
Pages: 224-235
Issue: 2/3
Volume: 15
Year: 2019
Keywords: industrial robot; energy consumption; inverse kinematics; genetic algorithm; GA; analytical hierarchy process; AHP; artificial neural networks; ANN.
File-URL: http://www.inderscience.com/link.php?id=98966
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Handle: RePEc:ids:ijetpo:v:15:y:2019:i:2/3:p:224-235

Template-Type: ReDIF-Article 1.0
Author-Name: Violetta R. Kiushkina
Author-X-Name-First: Violetta R.
Author-X-Name-Last: Kiushkina
Author-Name: Dmitry V. Antonenkov
Author-X-Name-First: Dmitry V.
Author-X-Name-Last: Antonenkov
Title: Specifics of assessing energy security of isolated energy service areas in territories with harsh climatic conditions
Abstract:
The specifics of regional energy economies support the need in excellent methodical approaches to diagnosing energy security of territorial formations, in general, and by internal components even on the same level. This emphasises the relevance of refining and establishing top priorities for energy security state assessment indicators for isolated territories with long low-temperature periods. Such territories include a part of the territory of the Russian Federation located mainly to the north of the Arctic Circle. The climate is extremely harsh, it is an arctic area. One can name Canada, Sweden and Finland, the USA, Iceland, Denmark and Alaska among such countries. We make an attempt of drawing an actual picture of territorial conditions and existing situations based on apparent factors in distinct directions of the formulated definition of energy security of decentralised energy supply areas.
Journal: Int. J. of Energy Technology and Policy
Pages: 236-253
Issue: 2/3
Volume: 15
Year: 2019
Keywords: isolated autonomous power supply systems; specifics; energy security; indicators; rank.
File-URL: http://www.inderscience.com/link.php?id=98971
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Handle: RePEc:ids:ijetpo:v:15:y:2019:i:2/3:p:236-253

Template-Type: ReDIF-Article 1.0
Author-Name: Ashish Mishra
Author-X-Name-First: Ashish
Author-X-Name-Last: Mishra
Author-Name: Nilay Khare
Author-X-Name-First: Nilay
Author-X-Name-Last: Khare
Title: Energy and performance improvement using real-time DVFS for graph traversal on GPU
Abstract:
Graphical-processing unit (GPU) handles massive data, effectively, as compared to CPU but has high power consumption which is a primary concern recently. A real-time dynamic voltage frequency scaling technique (DVFS) to save energy as well as improve performance, and to set the core and the memory frequency at a run time are proposed. Real-time DVFS is well investigated for saving energy and improving the performance by executing a breadth-first search (BFS) graph traversal algorithm from scalable heterogeneous computing (SHOC) benchmark suite. Two modes: energy saving and performance mode, can be realised by implementation of the proposed real-time DVFS algorithm. In energy saving mode, 28.2% energy can be saved with a performance improvement of 1.4%. On the other hand, 14.2% performance improvement is accomplished while maintaining the energy saving of 11.2% in performance mode. The proposed work is realised on K40c GPU received as a grant from NVidia.
Journal: Int. J. of Energy Technology and Policy
Pages: 254-279
Issue: 2/3
Volume: 15
Year: 2019
Keywords: graph traversal; breadth first search; BFS; power consumption; dynamic voltage frequency scaling; DVFS; graphical-processing unit; GPU; energy; real-time; scalable heterogeneous computing; SHOC; power.
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Handle: RePEc:ids:ijetpo:v:15:y:2019:i:2/3:p:254-279

Template-Type: ReDIF-Article 1.0
Author-Name: Manjushree Banerjee
Author-X-Name-First: Manjushree
Author-X-Name-Last: Banerjee
Author-Name: Gautam Dutta
Author-X-Name-First: Gautam
Author-X-Name-Last: Dutta
Title: Factors influencing grid interactive wind power industry in India
Abstract:
Increasing wind power capacities demand increased private sector participation while states are responsible for the renewable projects as well as for achieving their renewable targets. The paper aims at identifying the influencing factors in scaling up of grid interactive wind power through the lens of entrepreneurs and state policies. Adequate tariff, savings on power expenditure in industries, renewable purchase obligation (RPO) targets, long-term power purchase agreements, liberal energy banking and favourable open access policies are found to be encouraging while insufficient tariff, delayed payments, policy uncertainties, limitations in energy banking and difficult land processes are counted as barriers. Country level analysis reveals that presently the installed capacities are unable to respond to the state wind tariff though it strongly responds to the power tariff for industries. Suggestions to develop a policy scenario wherein the installed capacities respond to the state tariff are proposed. The scope of wind power is to be enhanced through favourable open access policies and high RPO targets.
Journal: Int. J. of Energy Technology and Policy
Pages: 351-372
Issue: 4
Volume: 15
Year: 2019
Keywords: grid interactive wind power; state policies; entrepreneurs; barriers; influencing factors; India.
File-URL: http://www.inderscience.com/link.php?id=102656
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Handle: RePEc:ids:ijetpo:v:15:y:2019:i:4:p:351-372

Template-Type: ReDIF-Article 1.0
Author-Name: Efiba Vidda Senkyire Kwarteng
Author-X-Name-First: Efiba Vidda Senkyire
Author-X-Name-Last: Kwarteng
Author-Name: Yarhands Dissou Arthur
Author-X-Name-First: Yarhands Dissou
Author-X-Name-Last: Arthur
Author-Name: John Ayer
Author-X-Name-First: John
Author-X-Name-Last: Ayer
Title: Project finance and investment in the oil and gas industry in developing countries: a case study of Ghana
Abstract:
Raising start-up and working capital are challenges faced by indigenous oil and gas entrepreneurs in many developing countries. The absence of sufficient collateral, good business plans, and high interest rates are barriers to acquiring bank loans in Ghana. The study was to identify possible avenues for funding oil and gas projects and challenges indigenous firms (SMEs) within the oil and gas value chain encounter in accessing funds. A questionnaire survey was performed with some banks and oil and gas service providing companies in Ghana. We showed that SMEs have lower success rate in accessing bank loans compared to well-established firms due to repayment risk. Therefore, financial institutions could resort to the project finance method to reduce such risk for projects within the oil and gas industry. We conclude that project finance is a viable avenue for SMEs to finance oil and gas projects in developing countries despite the associated bottlenecks.
Journal: Int. J. of Energy Technology and Policy
Pages: 373-395
Issue: 4
Volume: 15
Year: 2019
Keywords: energy technology and policy; project finance model; developing countries; Ghana's oil and gas industry; small and medium scale enterprise; SMEs; indigenous entrepreneurs; Ghanaian economy; project finance strategies; working capital; start-up capital; interest rates; trust fund; barriers to financing oil and gas projects.
File-URL: http://www.inderscience.com/link.php?id=102657
File-Format: text/html
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Handle: RePEc:ids:ijetpo:v:15:y:2019:i:4:p:373-395

Template-Type: ReDIF-Article 1.0
Author-Name: Yu Sang Chang
Author-X-Name-First: Yu Sang
Author-X-Name-Last: Chang
Author-Name: Jinyoung Jinnie Yoo
Author-X-Name-First: Jinyoung Jinnie
Author-X-Name-Last: Yoo
Title: Alternative projection of the 2040 nuclear power for eight countries
Abstract:
This study projected nuclear electricity intensity for eight countries - China, the USA, India, South Korea, Japan, Canada and Brazil - which in turn is used to estimate net nuclear electricity generation for year 2020, 2030, and 2040. The net nuclear electricity generation projected by this study then was compared to those projected in the 2013 International Energy Outlook published by the US Energy Information Administration. The 2040 projection from this study is 57.7% higher than Energy Information Administration's projection for China and also 54% higher for the USA. For four other countries, Energy Information Administration's projections are higher than those from this study, but by a smaller margin. Implications from the findings will be discussed.
Journal: Int. J. of Energy Technology and Policy
Pages: 396-412
Issue: 4
Volume: 15
Year: 2019
Keywords: nuclear electricity intensity; net nuclear electricity generation; experience curve; kinked experience curve; progress ratio.
File-URL: http://www.inderscience.com/link.php?id=102658
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Handle: RePEc:ids:ijetpo:v:15:y:2019:i:4:p:396-412

Template-Type: ReDIF-Article 1.0
Author-Name: Richardson Omorodje Eni
Author-X-Name-First: Richardson Omorodje
Author-X-Name-Last: Eni
Author-Name: John-Felix Kayode Akinbami
Author-X-Name-First: John-Felix Kayode
Author-X-Name-Last: Akinbami
Title: Evaluating the operational flexibility for wind energy integration in Nigeria using a security constraint unit commitment model
Abstract:
The study evaluated the flexible techno-economic operations of thermal plants for sustainable wind power integration into the Nigerian electricity industry using security constraint unit commitment approach. This provides empirical evidence on the thermal power plants capability to back-up variable generation from wind energy. Relative to the current generation mix, 10% and 20% wind energy penetration increased the system spinning reserve per day from 702.5 to 1507.5 and 2107.5 MW respectively. Thermal plants total numbers of start-up per day decreased from 23 to 14 and 18, and shutdown hours per day decreased from 52 to 44 and 49 hrs in 10% and 20% wind energy integrated system, respectively. Greenhouse emission reduction per day were 1746.6 and 3254.4 lb, and thermal plants operational revenue reduced by 3.7 and 7.0% daily in 10% and 20% wind energy integrated system, respectively.
Journal: Int. J. of Energy Technology and Policy
Pages: 413-435
Issue: 4
Volume: 15
Year: 2019
Keywords: energy integration; flexible operations; thermal power; unit commitment model; wind energy; Nigeria.
File-URL: http://www.inderscience.com/link.php?id=102659
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Handle: RePEc:ids:ijetpo:v:15:y:2019:i:4:p:413-435

Template-Type: ReDIF-Article 1.0
Author-Name: Abdel Khoodaruth
Author-X-Name-First: Abdel
Author-X-Name-Last: Khoodaruth
Title: Multi-criteria optimisation of a cane flexi-factory
Abstract:
The sugar cane industry is at stake due to the fall in prices of sugar. The industry has to re-engineer itself to a cane flexi-factory for its survival. A cane flexi-factory consists of a sugar mills, cogeneration power plant, bio-ethanol distillery, value-added sugars refinery and a bio-fertiliser manufacturing plant. Although one such refinery is in operation in Mauritius, the area of land area under sugar cultivation is decreasing. The outputs of the flexi-factory can be increased through implementation of higher pressure boiler; higher fibre cane; energy cane; cane tops and leaves; addition of a falling thin film evaporator and use drip irrigation technique. The aim of this paper is to evaluate the possible options to optimise the performance of a flexi-factory through the multi-criteria assessment approach. The outcome of the assessment will help policy makers to prioritise the implementation of these alternatives in the short, medium and long term.
Journal: Int. J. of Energy Technology and Policy
Pages: 457-475
Issue: 4
Volume: 15
Year: 2019
Keywords: sugar cane; electricity; cogeneration; multi-criteria assessment; MCA; small islands development states; SIDS.
File-URL: http://www.inderscience.com/link.php?id=102660
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Handle: RePEc:ids:ijetpo:v:15:y:2019:i:4:p:457-475

Template-Type: ReDIF-Article 1.0
Author-Name: Kenneth David Strang
Author-X-Name-First: Kenneth David
Author-X-Name-Last: Strang
Title: Novel hydroelectricity data envelopment analysis model
Abstract:
In this paper a data envelopment analysis (DEA) was developed using a spreadsheet to inform policy decision making for a clean renewable hydroelectricity plant located in a natural park preserve. The DEA objective function was to make the minimum changes to the proposed policy rates for hydroelectricity generation subject to the known capabilities and risks calculated from a beta distribution. The DEA decision variables were the proposed changes to the policy rates for each month. The simplex linear programming technique was used to implement DEA in a spreadsheet. Screen shots were included to illustrate how to setup the DEA spreadsheet. The results of this paper should generalise to policy makers, practitioners, analysts and researchers in the public utility and specifically in the clean renewable hydroelectricity community.
Journal: Int. J. of Energy Technology and Policy
Pages: 436-456
Issue: 4
Volume: 15
Year: 2019
Keywords: data envelopment analysis; DEA; operations research; hydroelectricity; clean renewable energy; park; risk; beta distribution; spreadsheet office automation software models.
File-URL: http://www.inderscience.com/link.php?id=102661
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Handle: RePEc:ids:ijetpo:v:15:y:2019:i:4:p:436-456