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Fast and Accurate Fault Detection in Transmission Line using Wavelet Transform
Preethi Manivannan ; Prof. Manik Hapse
Electrical Engineering
Year: 2016, Volume:2, Issue : 11
Pages: 523 - 531
An accurate fault detection and classification is required to transmit power from generating station to various load centres reliably. A new approach for fault detection for interconnected system using the time synchronized phasor measurements. The scheme is depending on comparing positive sequence voltage magnitudes for specified areas and positive sequence current phase difference angles for each interconnected line between two areas on the network. The paper performance of discrete Fourier transforms method for phasor estimation. The MATLAB/SIMULINK program is extensively used to implement the idea. It is used to simulate the power system, phase measurement function, synchronization process, and fault detection.
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A Comparative Study of Different Methods to Estimate the Parameters of Weibull Distribution
Subodh Kumar ; Jamshed Anwar; Akash Kumar; Manoj Kumar Mahato
Production Engineering
Year: 2016, Volume:2, Issue : 11
Pages: 532 - 536
Weibull reliability is found to be very beneficial to characterize the equipment time to failure, and to design their appropriate maintenance strategy by knowing the expected number of failure to occur in a given period of time. Through the use of fitted Weibull model as predictive tool, the operation management can take appropriate decision in advance to avoid operational upset. The time to failure or time between failure data will be utilized to perform the analysis. In this paper, some methods to estimate Weibull parameters, namely, shape parameters (β) and scale parameter (α) are presented. The methods can be grouped into two main categories: graphical and analytical methods. Results computed by different methods are compared.
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Waste Composting a Sustainable Practice
Pradip Baishya ; Dimbendra Kr. Mahanta; Shanjenbam Brojendro Singh
Environment Engineering
Year: 2016, Volume:2, Issue : 11
Pages: 537 - 543
Rapid and unplanned urbanization in most cities of India has progressively increased the problem of managing municipal waste in the past few years. With insufficient infrastructure and funds, municipalities in most cities are struggling to cope with the pace of waste generated. Open dumping and burning of waste is widely in practice as a cheaper option leading to high pollution levels. Scientific disposal of waste in a large scale with the elements of segregation, composting, recycling, landfill and incineration are hardly practiced. In an effort to finding affordable and simple solutions to address this burning issue of waste disposal, a pilot scale study was conducted focusing on segregation methodology leading to zero waste community. A resident colony in the city of Guwahati has been chosen, which is seen as a typical representative of most cities in India in terms of size and key issues surrounding waste management. Scientific management and disposal of waste on site is carried out from segregation to compositing. Identifying bottlenecks in the success of the model, data on efficient composting of the waste collected were part of the study. Similar satellite waste management plants could potentially be a solution to supplement the waste management system of municipalities of similar sized cities in India or South East Asia with similar issues surrounding waste disposal.
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Performance of RC Elevated Water Tank for Different Bracing Patterns under the Effect of Earthquake Excitation
Shrigondekar Anand H ; Padhye Rajesh D
Structural Engineering
Year: 2016, Volume:2, Issue : 11
Pages: 544 - 549
The current design of supporting structure of Elevated water tanks is tremendously vulnerable under lateral forces due to an earthquake. Water tanks and especially the elevated water tanks are structures of high importance which are considered as main lifeline elements that should be capable of keeping the expected performance i.e. operation during and after earthquakes. Thus researchers, in recent years, have focused on studying seismic behaviors of these tanks, particularly ground tanks, while only few of these researches have concerned with the elevated tanks and even less with the reinforced concrete elevated tanks. In this research, a sample of a concrete elevated water tank with 400 m3 have been studied and analyzed by linear dynamic method and seismic response such as base shear, tank displacement, max Bending Moment at the base of column under tank reinforced empty condition, tank full condition and tank half full condition for different type of bracing arrangements have been calculated and then results have been compared.
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Behavior of Segmental Precast Post-Tensioned Bridge Pier
Ingalkar Sachin V ; Shiyekar Mukund R
Structural Engineering
Year: 2016, Volume:2, Issue : 11
Pages: 550 - 555
In seismic areas, bridges are designed so that the piers will yield rather than the superstructure. Powerful earthquakes cause residual displacement of the Pier. This permanent deformation can be difficult to repair. Un-bonded post-tensioning solves the problem of residual displacement. since strain is distributed equally throughout the tendon, it does not yield easily, and residual displacements are small. After adding pre-stressing load, tensile stresses are reduced and compressive stresses are increased upto its permissible limits. In this study the effects of the pre-stressed tendon ratio and prestressing force, the longitudinal reinforcement ratio is made by non-linear static pushover analys in SAP2000, from Pushover Analysis is obtained that the yield strength & ultimate strength is improved when the pre-stressing force is applied to the Pier. From Cyclic Analysis (Hysteresis) it is found that hysteresis loop area will improve hence, energy dissipating capacity will be improved when pre-stressing load applied to the pier. Probability of complete damage is reduced for Pre-stressed Pier as compared with normal pier.
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Concept of Moving Centre of Gravity for Improved Directional Stability for Automobiles - Simulation
Subin Antony Jose ; Siyad S; Ton Devasia; Joseph Sebastian; Prof.Sajan Thomas
Mechanical Engineering
Year: 2016, Volume:2, Issue : 11
Pages: 556 - 566
This paper is a study based on the implementation of a new concept in AUTOMOBILE which will help in improving the directional stability and handling characteristics of vehicle. The purpose of this study is to analyze the influence of position of CENTRE OF GRAVITY of a vehicle in its stability in accordance with YAW MOTION, ROLL MOTION, UNDER STEER and OVER STEER. The concept is to implement a mechanism which can bring SHIFTING OF C.G in automobile, as per the conditions. The influence of position of C.G is much bigger for the balancing of forces in dynamic stability of the vehicle. The concept of moving C.G will help to acquire this added stability to the vehicle even in the worst conditions.The directional stability of a vehicle is influenced by the steering angle and slip angle of the tire to an extent. It is possible to have a variation in these values by the shifting of CG. The designing of a convenient mechanism which helps in achieving the movement of the mass (either by pumping a high density fluid or my movement of a solid block by mechanical linkage) is to be done and have to be tested in a real time vehicle. Before proceeding to the practical level of the concept, validation of the idea based on theoretical aspect has to be done. For this, a dynamic simulation is to be done with the software MATLAB.
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A Review of Digital Watermarking on Web Pages
Jaiswal Raj Jayantilal
Computer Engineering
Year: 2016, Volume:2, Issue : 11
Pages: 567 - 569
For digital protection there are many methods, out of which text watermarking scheme is one of the most effective method. However, directly applying text watermarking to image and text documents will detract the invisibility and robustness of embedded watermarks. Text watermarking schemes is one of the most effective method for digital document protection. The direct implementation of text watermarking to the web document can detract the invisibility and robustness of embedded watermark. In this paper number of watermarking technique on web documents, which is comprised of three processes like generation of watermark, embedding watermark and detection of watermark from web document with some different approach than the traditional one.
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Seismic Response of Multistorey Building With Verticular Irregularity as Floating Columns
Joshi Shridhar D ; Tande Shrirang N
Structural Engineering
Year: 2016, Volume:2, Issue : 11
Pages: 570 - 577
In present scenario buildings with floating column is a typical and unavoidable evil in the modern multistory construction in urban India. Such features are highly undesirable in building built in seismically active areas. This study highlights the importance of explicitly recognizing the presence of the floating column in the analysis of building. For the present study response spectrum and time history analysis are carried out to know the various structural parameters like base shear, storey shear, storey displacement. The scaled earthquake excitation data is applied for computation of results for both the frames with and without floating column. This paper deals with G+4 storey normal building and G+4 floating column building in which floating column located at each floor. For a present study building with regular plan and situated in zone III is considered and analyzed in FEM software ETABS 2015.
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Earthquake frequency content on the seismic behavior of regular R.C.C. Buildings
Gound Ajit B ; Padhye Rajesh D
Structural Engineering
Year: 2016, Volume:2, Issue : 11
Pages: 578 - 585
Proper selection of seismic design forces for engineering structures requires specification of the expected intensity of ground shaking that the structure will experience during their lifetime. In order to take precaution for the loss of life and damage of structures due to the ground motion, it is important to understand the characteristics of ground motion. The most important dynamic characteristics of ground motion are peak ground acceleration (PGA), frequency content, and duration. The more common practice adopted by many seismic codes is to use peak acceleration as a single measure of ground motion intensity. However, as more earthquake records were obtained, it became apparent that the use of a single design spectral shape scaled by peak site acceleration is inadequate to cover over all sites. Many recorded earthquake ground motions have response spectra dramatically different from the standard design spectrum. Ground motion has different frequency contents such as low, intermediate, and high. Present work deals with study of effect of varying frequency content of ground motion on reinforced concrete buildings. Linear time history analysis is performed in SAP2000 software on regular 3D three and six-storey RC buildings with six ground motions of low, intermediate, and high-frequency contents having equal duration and peak ground acceleration. The response of buildings due to the ground motions in terms of storey displacement, and base shear are found. The results show that low-frequency content and intermediate-frequency content ground motions have significant effect on regular RC buildings. However, high-frequency content ground motions have very less effect on responses of the regular RC buildings.
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An Uncertain Procedure for Determining Expansion on Targeted Users in Organized Networks
Rahul Kamble ; Piyush Kala; Navneet Yadav; Bhavesh Parbate
Computer Engineering
Year: 2016, Volume:2, Issue : 11
Pages: 586 - 589
Determining expansion is introduced to expand the profit of viral promoting in organized networks. The weakness of determining expansion is that it doesn't distinguish targeted users from others, even though some things is solely helpful for the particular users. For such items, it's a higher strategy to specialize in increasing the determining on the targeted users. During this paper, we tend to formulate associate determining expansion problem as uncertain process to differentiate targeted users from others. we tend to show that the uncertain process problem is NP-hard and its objective operate is substandard. We tend to propose associate expectation model for the worth of the objective perform and a quick greedy-based approximation methodology by applying the expectation model. For the expectation model, we tend to investigate a relationship of methods between users. For the greedy methodology, we tend to calculate associate efficient increasing update of the marginal gain to our objective operate. We conduct experiments for evaluating the planned methodology with real-life datasets, and compare the results with those of existing Ways that are adapted to the problem. From our experimental results, the planned methodology is a minimum of associate order of magnitude quicker than theexisting ways in most cases whereas achieving high accuracy. Index Terms—Graph algorithms, determining expansion, free cascade model, organized networks.
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Abstract
