Research and Publications: Recent submissions
Now showing items 921-940 of 1138
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Multi Objective Dynamic Economic Dispatch with Cubic Cost Functions
(Science Publishing Group, 2015)The formulation and solution of the Dynamic Economic Dispatch (DED) problem is one of the key disciplines in modern power system operation, planning, operation and control. Past researches have considered DED on Quadratic ... -
24-Hours Load Forecasting Using a Hybrid of Genetic Algorithm (GA) and Particle Swarm Optimization (PSO) for Optimized Neural Network
(International Journal of Emerging Technology and Advanced Engineering, 2016)Short-term load forecasting (STLF) has emerged as one of the most important fields of study for efficient and reliable operation of power system. It plays a very significant role in the field of load flow analysis, contingency ... -
Voltage Controller for Radial Distribution Networks with Distributed Generation
(International Journal of Scientific and Research Publications, 2014)This paper presents a coordinated network controller whose objective is to maintain an optimal voltage profile across radial distribution networks with distributed generation. This is done by varying the output of the ... -
Alternative Diesel Engine Fuel from Kenyan Pishori Rice Bran
(International Journal of Engineering Science Invention, 2013)Rice bran used as biomass material was acquired from small scale rice millers in Wang’uruMwea, Kirinyaga County, Kenya. The oil was extracted from the rice bran using petroleum ether which was preferred due to its high ... -
Invasive species in east Africa: current status for informed policy decisions and management
(E. Africa: Status and policy in biological invasions, 2013)Invasive alien species are the second leading cause of biodiversity loss in the world today. A number of hypotheses have been advanced to explain the proliferation of invasive species. These hypotheses include deficiency ... -
Comparative analysis of on-farm timber conversion systems in Kenya
(Journal of Horticulture and Forestry, 2013)Exploitation of trees on private farms in Kenya is mainly by chain, bench and pit sawing systems, whose efficiency has not been well established. The sawing systems were evaluated for their performance using three species: ... -
A GA/IPSO based Approach for System Loss Reduction and Voltage Profile Improvement Employing Arithmetic Crossover and Mutation
(International Journal of Engineering Science and Technology, 2013)Reduction of system losses and improvement of voltage profile is one of the key aspects in power system operation. Though many methods are used to achieve this aspect, Distributed Generation (DG) has found increased usage ... -
Solving The Active Distribution Network Reconfiguration (ADNR) Problem Taking Into Consideration A Stochastic Wind Scenario and Load Uncertainty By Using HBFDE Method
(International Journal of Emerging Technology and Advanced Engineering, 2017)-Past literature has attempted to solve the problem of network reconfiguration with Distributed Generators (DGs) without taking into consideration the intermittent renewable at a close proximity. Distribution ... -
Power Loss Reduction in the Active Distribution Network by Doubly Fed Induction Generator (DFIG) Placement and Sizing Using Ordinary Particle Swarm Optimization (PSO) and an hybrid of Genetic Algorithm (GA) and PSO (HGAPSO)
(2013)Due to the increased importance of DFIGs in optimization of real and reactive power losses and the maintenance of voltage profile, the general methods of DG placement and sizing in the existing literature cannot be ... -
A combined sensitivity factor based GA-IPSO approach for system loss reduction and voltage profile enhancement
(International Journal of Innovative Research in Engineering & Science, 2013)Though several algorithms for optimizing DG location and size in a network with the aim of reducing system power losses and enhancing better voltage profile have already been proposed, they still suffer from several ... -
Combined Real and Reactive Power Economic Dispatch using Multi-Objective Reinforced Learning with Optimized Losses
(International Journal of Scientific and Research Publications, 2015)Most of the economic dispatch (ED) works so far deal with real power dispatch only. With the integration of renewable energy into the grid, reactive power dispatch cannot be ignored any longer due to its importance in ... -
A review of Techniques in Optimal Sizing of Hybrid Renewable Energy Systems
(International Journal of Research in Engineering and Technology, 2015)This paper presents a review of techniques usedin recent published works on optimal sizing of hybrid renewable energy sources. Hybridization of renewable energy sources is an emergent promising trend born out of the need ... -
Social networks and the adoption of agricultural innovations: The case of improved cereal cultivars in Central Tanzania
(ICRISAT, 2014)Literature on the adoption of agricultural innovations highlights the importance exposure to these technologies for the adoption decision of small scale farmers. This study assesses the relevance of exposure and other ... -
Gender and Educational Dimensions of Handicraft Industry in Mwala District, Kenya
(International Journal of Humanities and Social Science, 2014-09)In Kenya, communities have since time immemorial practised indigenous technologies such as woodcarving and basket weaving. The “kiondo” (African Basket) for example, is now an international handicraft while the woodcarvings ... -
Harnessing Opportunities for Productivity Enhancement for Sorghum & Millets (HOPE): Baseline Survey, Tanzania
(ICRISAT, 2013)The baseline survey was made in Singida Rural and Kondoa districts of Central Tanzania. A random sample of 360 farm households was sampled, divided into treatment, diffusion, and control groups. The survey was conducted ... -
Effects of Distributed Generation penetration on system power losses and voltage profiles
(International Journal of Scientific and Research Publication, 2013)In present times, the use of DG systems in large amounts in different power distribution systems has become very popular and is growing on with fast speed. Although it is considered that DG reduces losses and improves ... -
Artificial breeding of an optimized solar tunnel dryer using genetic algorithms
(International Journal of Sustainable Energy, 2011)Studies were carried out to artificially breed an optimized solar tunnel dryer using genetic algorithms (GAs). The energy harnessed by the dryer was simulated in Visual Basic Script (Microsoft Visual Basic Script 2010TM) ... -
Voltage Stability Improvement Using the 21st Century Power Transformer
(Innovative Systems Design and Engineering, 2012)The 21st Century Power Transformer is produced by combining modern high voltage cross-linked polyethylene (XLPE) cable technology with conventional transformer. The technique of solid insulation is adopted in the new dry ... -
Optimising Voltage Profile of Distribution Networks with Distributed Generation
(International Journal of Emerging Technology and Advanced Engineering, 2012)Power utility companies are required to supply customers with power within specified voltage limits. Voltage rise in networks with distributed generators therefore poses a challenge. This paper presents a coordinated network ... -
Distributed Slack Bus Model for a Wind-Based Distributed Generation using Combined Participation Factors
(International Journal of Emerging Technology and Advanced Engineering, 2012)With the increased penetration of distributed generation into the power distribution system, the traditional load flow analysis that assumes a single slack bus has become impractical. The existing literature focuses on ...
