Birla Vishvakarma Mahavidyalaya

Lal Bahadur Nagar, India

Birla Vishvakarma Mahavidyalaya

Lal Bahadur Nagar, India

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Patel K.,Gujarat Technological University | Parekh B.R.,Birla Vishvakarma Mahavidyalaya
2013 IEEE 1st International Conference on Condition Assessment Techniques in Electrical Systems, IEEE CATCON 2013 - Proceedings | Year: 2013

The main objective of any power utility is the reliability which is sometimes affected due to failure of outdoor insulators. The insulators of transmission line passing through the coastal area are subjected to marine pollution which contains Sodium chloride (NaCl). In presence of fog or rain, this pollution known as contaminant may lead to flashover of insulator. In this paper an approach to predict the flashover is reported. Experimental set-up was prepared to energise 11 kV composite insulators under AC supply, to create artificial humidity and to measure leakage current under different conditions. Harmonics components of leakage current are analysed by using Fast Fourier Transform (FFT). It was found that when severe arc occurred on the surface of insulator, low frequency components are going to increase especially 3rd and 5th harmonics. The final analysis revealed that the development of flashover due to contamination could be predicted from the analysis of the ratio of 3rd to 5th harmonics of Leakage current signal. © 2013 IEEE.

Vahora S.A.,Vishvakarma Government Engg College | Chauhan N.C.,A D Patel Institute Of Technology | Prajapati N.B.,Birla Vishvakarma Mahavidyalaya
Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering, LNICST | Year: 2012

We propose a new approach for moving object detection. Moving object detection is low-level, important task for any visual surveillance system. The aim of this paper is to, to describe traditional approach of moving object detection techniques such as background subtraction, temporal difference, as well as pros and cons of these techniques. Finally, we propose the statistical mean technique to overcome the problem in traditional techniques. Since, simple statistical mean technique having disadvantages, to defeat those, we propose incremental statistical mean technique. Incremental statistical mean technique have need of computation to perform simultaneously, that requires parallel computation to speed up and reduce the computation complexity. © Institute for Computer Sciences, Social Informatics and Telecommunications Engineering 2012.

Khandelwal S.S.,Dharmsinh Desai University | Dhiman S.D.,Birla Vishvakarma Mahavidyalaya
Journal of Agrometeorology | Year: 2015

In this paper, the net irrigation water requirement estimation is carried out for different crops in Limbasi branch canal command area of Mahi Right Bank Canal (MRBC) project located in Gujarat, India. The Hargreaves – Samani approach for reference crop evapotranspiration (ETo) estimation is used for thirteen years of available data and the mean monthly ETo values were computed which were analyzed statistically. The potential crop evapotranspiration (ETc) and net irrigation requirement (NIR) of different crops in kharif, rabi and summer season were estimated. Results show that the NIR values (mm) for kharif crop paddy was 166.8; rabi crops jowar, tobacco & wheat were 404.3, 504.2 & 564.7 and summer crops paddy & bajri were 851.1 & 619mm respectively. © 2015 Association of Agrometeorologists. All rights reserved.

Davda A.T.,H+ Technology | Azzopardi B.,Kaunas University of Technology | Parekh B.R.,Birla Vishvakarma Mahavidyalaya | Desai M.D.,Kalol Institute of Technology and Research
IEEE Transactions on Power Systems | Year: 2014

Distribution system operators are often challenged by voltage regulation problems, energy losses, and network capacity problems. This paper analyses a real-life 3.9-MVA distribution network in Gujarat State, India. Distributed generation from renewable energy sources like wind and solar, at optimal locations on distribution feeders, may enable energy loss reduction and voltage profile improvement. A methodology is developed and presented for deciding the appropriate location of these embedded renewable generators. Simulations are performed to calculate different scenarios, and the final analysis reveals that the low voltage problem has totally been eliminated on all of the nodes of the distribution network. Complimentary, significant energy loss reductions are also achieved in the distribution, and the network reserve capacity has also increased. © 1969-2012 IEEE.

Davda A.T.,H+ Technology | Parekh B.R.,Birla Vishvakarma Mahavidyalaya
2012 IEEE Electrical Power and Energy Conference, EPEC 2012 | Year: 2012

This paper analyzes the impact of Renewable Distributed Generation on a 4.02 MVA Radial Distribution Network of a particular area of Gujarat state, India. Distribution System software simulation of existing Network revealed severe voltage regulation problems in major portion of the Network, overloading of few sections and high losses. A methodology has been developed and presented in this paper for determining appropriate locations for integration of Renewable Distributed Generators within the Distribution Network with the objective of improving voltage profile and reduction in losses. After the integration of Renewable Distributed Generation in the Network as per the methodology developed, the simulation results reveal that the minimum voltage in the Network is within the permissible regulatory limits and significant loss reduction is achieved. Also an advantage is increased Network reserve capacity to cater additional load with the same existing Network. © 2012 IEEE.

Davda A.,Nirma University | Desai M.D.,Kalol Institute of Technology and Research | Parekh B.R.,Birla Vishvakarma Mahavidyalaya
International Review on Modelling and Simulations | Year: 2011

Conventional Transmission and Distribution systems do not envisage at present any generation on consumer side. However, with the enactment of Indian Electricity Act 2003 and due to the major changes in the Power Sector and the fast move towards liberalization of the energy markets, utilities are inclined to install small capacity generating units to distribution systems. Integration of small capacity generators at load points in the existing electrical network will have impact on voltage regulation, losses, reserve capacity of network etc. In this paper, Renewable Distributed Generators (RDGs) are introduced at a suitable location of a heavily loaded distribution network to minimize distribution losses. Case study has been performed on a real 3.4 MVA distribution system of a particular area of Gujarat state. A methodology has been developed for citing the RDGs at a suitable location in the Network. © 2011 Praise Worthy Prize S.r.l. - All rights reserved.

Darji M.C.,Birla Vishvakarma Mahavidyalaya | Patel N.M.,Birla Vishvakarma Mahavidyalaya | Shah Z.H.,Birla Vishvakarma Mahavidyalaya
2015 International Symposium on Advanced Computing and Communication, ISACC 2015 | Year: 2015

A movie gathers different fractions like comedy scenes, action, dialogs and songs. Extraction of songs from movies is carried out in this paper with the help of special audio features which helps to distinguish between song and non-song. The algorithm used here performs the operations of movie segmentation, intensity based classification and audio clues based improvements. Intensity based classifications leads to the promising song sequences which may include non-song portions. Such false detections are eliminated using audio clues namely tempo and zero crossing rate. Movies of different genre like comedy, drama, action, thriller, romantic and suspense having different languages specifically Hindi, Marathi, Gujarati and English are taken here for measuring accuracy of this work. © 2015 IEEE.

Rana R.C.,RK University | Rathod J.M.,Birla Vishvakarma Mahavidyalaya
Proceedings of the 2016 IEEE International Conference on Wireless Communications, Signal Processing and Networking, WiSPNET 2016 | Year: 2016

The main focus of this paper is to study performance of two linear channel estimators, the Least Square Error(LS) and Linear Minimum Mean Square Error(LMMSE) for 2×2 and 4×4 VBLAST MIMO OFDM system with different modulation, BPSK, QPSK, 8QAM and 16QAM as well as with MMSE equalizer at receiver. Channel state information is useful at receiver to remove effect of channel in received signal for efficient recovery of data and at transmitter it is useful to vary modulation order and power allocation according to channel for efficient wireless system. For performance analysis, LMMSE is used instead of Minimum Mean Square Error (MMSE) because of its simplicity as well as it retain MMSE criteria but the constrain is linear. © 2016 IEEE.

Jhaveri R.H.,Charotar University of Science & Technology | Patel N.M.,Birla Vishvakarma Mahavidyalaya
Wireless Networks | Year: 2015

Wireless shared medium, randomly moving nodes and multi-hop architecture make mobile ad hoc networks vulnerable to various network layer threats. Grayhole attack is such a prominent network layer threat, in which a malevolent node attempts to establish a bogus route passing through itself and performs packet forwarding misbehavior by dropping a subset of the received data packets in order to degrade the network performance. In this paper, we address this issue by proposing a heuristic approach, referred to as sequence number based bait detection scheme, which attempts to isolate malevolent nodes during route discovery process. The mechanism is incorporated with ad hoc on-demand distance vector routing protocol. Performance of the proposed scheme is compared with an existing scheme under three grayhole adversary models adopting distinct mode of operations. Simulation results under various network parameters depict that the proposed scheme improves network performance depending upon the mode of operations of the adversaries. © 2015, Springer Science+Business Media New York.

Patel C.,Birla Vishvakarma Mahavidyalaya | Hasan M.,Birla Vishvakarma Mahavidyalaya | Tanawala B.,Birla Vishvakarma Mahavidyalaya
International Conference on Electrical, Electronics, Signals, Communication and Optimization, EESCO 2015 | Year: 2015

As Performance analysis of Map-Reduce is needed specifically in MongoDB as Map-Reduce is widely used programming model for processing large amount of distributed data. Map-Reduce is a software framework for developing distributed application to process huge amount of data i.e. BigData distributed across cluster or Grid. The main aspects behind this paper is to present Design of 'Benchmark of Map-Reduce Framework in MongoDB' i.e. 'MongoMRBench' and 'MongoGen' is a system that generates semantic large data that are supported by MongoDB which is Document based database. © 2015 IEEE.

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