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Volume 7 Issue 1 (January 2020)

S.No. Title & Authors Page No View
1

Title : Smart Distribution System by Using Binary Particle Swarm Optimization

Authors : Samuel Kefale Melese

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Abstract :

The electric Distribution System is subject to many disturbance which results power outage and material damage, and also due to its network topology power delivery to the customer is accompanied with the cost of power loss. Whenever reliability, power loss and resilience is an issue the distribution system must be designed to self healing.  The power coming from the transmission line can be effectively distributed by managing automatically it’s network configuration.  This paper explores effective loss minimization for efficient smart electrical distribution power flow. The  load  on  the  distribution  system  is  a  continuously  changing  entity  and  hence  a configuration which corresponds to a minimum loss at a particular load  will not be so at  a different load. Feeder  reconfiguration  is one  of  the  techniques  for  loss  minimization  in  a nonlinear network  optimization  problem  which  restructures  the  distribution  feeders  by  changing  the  open/closed status of the sectionalizing and tie switches.  and  the  solution  for  the  problem  involves  a  search  over  the  possible configurations with multiple constraints. Binary particle swarm optimization method was applied to find the possible switching-options for loss reduction. Since distribution system is radial configuration backward forward load flow analysis is used. The algorithm is computationally efficient and determines the switching option that gives the maximum loss reduction in the system. For testing the effeteness of the method standard IEEE 33 bus system is used. The proposed algorithm is coded in MATLAB and power world simulator, to check the result obtained by MATLAB. The optimal configuration result shows that large amount of power loss was reduced from the initial configuration. 

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2

Title : Development of Low Cost Rice De-Stoning Machine

Authors : Ohwofadjeke Paul Ogheneochuko

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Abstract :

In Nigeria, Local rice processing has suffered a lot of setback, such as problem of stones and other foreign materials in processed rice. In an attempt to develop capacity to meet the ever increasing demand, this study designed, constructed, and evaluated performance of a rice de-stoning machine. The study is divided into five major tasks namely: (1) determination of the engineering characteristics of five commonly cultivated local rice varieties in Nigeria that are relevant to design of the de-stoning machine, (2) design of basic components of rice destoner (3) engineering drafting of the components, (4) construction of de-stoning machine using local technology and sourced materials (5) performance evaluation of the fabricated machine. Relevant engineering procedures and standards were applied to the determination of the properties and design of the machine components. The machine with a design capacity of 3 tons per day was constructed in the Faculty of Engineering workshop, Niger Delta University. It’s  consists of centrifugal blower, reciprocating sieves, screw conveyor, separating cylinder, transmission shaft with rotating speed of 360 rpm, powered by a 5 hp electric motor. The total cost of constructing the machine is estimated at ₦196,050. The performance evaluation revealed a de-stoning efficiency of 78%.  This research work has developed a local, cost effective and efficient rice de-stoning machine, thus improving the quality and the market value of locally produced rice in Nigeria.

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3

Title : Control of Codling Moth (Cydia Pomonella) Infestation Rate by Different Cultural Methods

Authors : Tajamul Nissar, Purnima Shrivastava

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Abstract :

The aim of the present work is to study the control of cultural techniques on the infestation rate and to calculate the population of codling moth from the orchards of Ladakh for the sake of convenience 4 orchards of Nurla village were selected from the Union territory of Ladakh and the different cultural methods were practiced in these orchards and in which the delta traps were installed to monitor the population of codling moth only for monitor purposes. Delta traps containing lures loaded with codlimone (E,E)-8,10-doddecadien-1-ol the sex attractant which attracts male moths towards trap. The orchards taken were practiced by different methods like orchard S1 (Bur lapping ), S2 (S sanitation),S3 (Bur lapping & Sanitation ) and S4 with no method used (control ). According to the plan the visits were conducted and the result was taken to obtain the infestation rate and to analyze the population of codling moth from the selected orchards. The orchards with heavy infestation were measured in relation to the low-infested orchards of the same area containing equal number of trees. The population of the codling moth was also monitored during the three visits to these selected orchards in which the traps were installed and finally that was calculated. The table results clearly indicated that the orchard S4 were no method was practiced was heavily infested followed by S1 Bur lapping, S2 Sanitation, and very low infested S3 Bur lapping & Sanitation. The traps catch was low in S3 were bur lapping and sanitation was done followed by S2 Sanitation, S1 bur lapping, and the highest catch was at S4 were no method was practiced.  Finally the data from the orchards with high infestation and high trap catch was correlated with data from the orchards with low infestation and low trap catch. orchards.

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4

Title : Investigation on the effect of mineral admixtures on mechanical property of self compacting concrete

Authors : Rayees Ali Khan

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Abstract :

Concrete is the mixture of cement sand and aggregate with a designed water-cement ratio. In RCC structural’s concrete is vibrated heavily to flow through reinforcement bars which are less spaced. To solve this problem self compacting concrete is used. In this research ordinary Portland cement is partially replaced with silica fume and fly ash with different percentages 5%, 10%, 15% and 20% of fly ash and 1%, 2.5%. 5%, 7.5% and 10% of silica fume for controlled mix design. In this research, the fresh and the hardened properties of concrete is determined it is shown that the fresh property of concrete is increased by increasing the percentage of silica fume and fly ash. It is observed that the mechanical properties of concrete are increased by the increase of silica fume and decreased the mechanical property by increasing the percentage of fly ash.

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