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Hyderabad, India

Subhash B.,SR Engineering College | Rajagopal V.,BVRIT
2014 Power and Energy Systems Conference: Towards Sustainable Energy, PESTSE 2014 | Year: 2014

In Smart Grid, the smart meters are versatile role with intelligent capabilities in order to meet the consumer's demands and their each objective. Smart meter can measure and communicate detailed real time electricity usage, facilitate remote real time monitoring and control power consumptions and consumers are provided with real time pricing and analyzed usage information, which is a technical data to be transmitted to the grid, who are utility providers. More detailed feedback on each appliance to the user. In this connection Demand-side management (DSM) programs implemented by utility companies to control the energy consumption in residences appliances which are interfacing the digital meter with many DSM technical properties and Home energy management system is also implemented for the same cause. A simulation framework that can model a house equipped with various home appliances and the simulator can predict the power dissipation profiles of individual appliances as well as the cumulative energy consumption of the house in a realistic manner, in this process the harmonic pollutions in the electrical networks became one of the major factors affecting the power quality of the network which are detected and for which one of the techniques is two stage solutions for the harmonic analysis by Radial basis function in the neural network. Future smart grids will likely to be more tightly integrated with the cyber infrastructure for sensing, control, scheduling, dispatch, billing and cyber attacks can be detected by using smart meters and also ordering the power demand through online. © 2014 IEEE. Source


Pasha S.,BVRIT | Tulasi Ram Das G.,Jawaharlal Nehru Technological University Kakinada
International Journal of Applied Engineering Research | Year: 2015

This paper proposes a comparison analysis of different real and reactive power coordination controller for a unified power flow controller (UPFC). The basic control for the UPFC is such that the series converter of the UPFC controls the transmission line real/reactive power flow and the shunt converter of the UPFC controls the UPFC bus voltage/shunt reactive power and the DC link capacitor voltage. In steady state, the real power demand of the series converter is supplied by the shunt converter of the UPFC. To avoid instability/loss of DC link capacitor voltage during transient conditions, a real power coordination ANN, Fuzzy & Neuro Fuzzy controller has been designed. The need for reactive power coordination controller for UPFC arises from the fact that excessive bus voltage (the bus to which the shunt converter is connected) excursions occur during reactive power transfers. A new reactive power coordination controller has been designed to limit excessive voltage excursions during reactive power transfers. MATLAB-SIMULINK simulation results have been presented to show the improvement in the performance of the UPFC control with the real power and reactive power coordination Neuro Fuzzy controller. © Research India Publications. Source


Kaipa A.N.R.,HITAM | Bulusu V.V.,Jawaharlal Nehru Technological University Anantapur | Kavati D.P.,BVRIT
Journal of Computer Science | Year: 2014

Hill cipher is developed using simple linear transformation. It is vulnerable to known-plaintext attack and there exist several methods in the direction of linear transformation to overcome the problems. HCM-EE is an improved method using Eigen value but it is linear and too many mathematical operations. In this study an attempt has been made to introduce nonlinearity to the linear transformation based cryptosystem using byte substitution over GF (28) and a variable length sub key groups. The performance evaluation of the method is also studied and presented. © 2014 Science Publications. Source


Deepthi J.,BVRIT | Saxena S.N.,GRIET
International Conference and Workshop on Emerging Trends in Technology 2011, ICWET 2011 - Conference Proceedings | Year: 2011

Mutlilevel Inverter is a power electronic circuit used to generate voltage of multiple levels. As the number of levels increases harmonic content can be decreased. In this paper a three level diode clamped inverter is used and variation of its output total harmonic distortion with respect to modulation index is observed. Here Sinusoidal PWM technique is used to generate the pulse inputs to gate of IGBTs. In this method a fundamental frequency sine wave is compared with high frequency carrier triangular wave. Copyright © 2011 ACM. Source


Rao V.S.,Anurag Group of Institutions | Babu L.A.,Anurag Group of Institutions | Raju R.S.,BVRIT
Journal of Applied Fluid Mechanics | Year: 2013

The objectives of the present study are to investigate the radiation effects on unsteady heat and mass transfer flow of a chemically reacting fluid past a semi-infinite vertical plate with viscous dissipation. The method of solution is applied using Finite element technique. Numerical results for the velocity, the temperature and the concentration are shown graphically for various flow parameters. The expressions for the skin-frication, Nusselt number and Sherwood number are obtained. The result shows that increased cooling (Gr>0) of the plate and the Eckert number leads to a rise in the velocity. Also, an increase in the Eckert number leads to an increase in the temperature, whereas increase in radiation lead to a decrease in the temperature distribution when the plate is being cooled. Source

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