EASND: Energy Adaptive Secure Neighbour Discovery Scheme for Wireless Sensor Networks

Wireless Sensor Network (WSN) is defined as a distributed system of networking, which is enabled with set of resource constrained sensors, thus attempt to providing a large set of capabilities and connectivity interferences. After deployment nodes in the network must automatically affected heterogeneity of framework and design framework steps, including obtaining knowledge of neighbor nodes for relaying information. The primary goal of the neighbor discovery process is reducing power consumption and enhancing the lifespan of sensor devices. The sensor devices incorporate with advanced multi-purpose protocols, and specifically communication models with the pre-eminent objective of WSN applications. This paper introduces the power and security aware neighbor discovery for WSNs in symmetric and asymmetric scenarios. We have used different of neighbor discovery protocols and security models to make the network as a realistic application dependent model. Finally, we conduct simulation to analyze the performance of the proposed EASND in terms of energy efficiency, collisions, and security. The node channel utilization is exceptionally elevated, and the energy consumption to the discovery of neighbor nodes will also be significantly minimized. Experimental results show that the proposed model has valid accomplishment

Edge Computing and Blockchain in Smart Agriculture Systems

The advancement of Internet-based technologies has made huge progress toward improving the accessibility of "smart agriculture." With the advent of unmanned and automatic management, smart agriculture is now able to accomplish monitoring, supervision, and real-time picture monitoring. It is not possible to know for sure that the data in a smart agriculture system is complete and secure from intrusion. This article investigates and assesses the potential of edge computing and blockchain for use in smart agriculture. We combine the advantages of blockchain technology and the edge computing framework to create a smart agriculture framework system that is based on a very straightforward analysis of the evolution of smart agriculture. The study proposes a thorough method for emphasizing the significance of agriculture and edge computing, as well as the advantages of incorporating blockchain technology in this context. This paper also proposes an intelligent agricultural product traceability system design: edge computing with blockchain for smart agriculture. The study concludes with a discussion of outstanding problems and difficulties that can arise during the creation of a blockchain-based edge computing system for smart agriculture systems

Performance of no-till maize under drip-fertigation in a double cropping system in semi arid Telangana state of India

Availability of water for Agriculture is becoming increasingly difficult, besides the cost of power for applying it. Improving the water and nitrogen use efficiency has become imperative in present day’s Agriculture. Drip irrigation and fertigation provides the efficient use of limited water with increased water and nutrient use efficiency, respec- tively. A field experiment was conducted during post rainy season of two consecutive years (2011 and 2012), in sandy loam soils of Warangal, Telangana State, India to study the response of no-till maize (Zea mays L) after aerobic rice (Oryza sativa L) to drip irrigation and nitrogen fertigation under semi-arid environment. The experiment was laid out in split plot design with four replications. Three irrigation schedules viz. drip irrigation at 75% Pan Evaporation (PE); 100% PE and 125% PE were taken as main plots and three nitrogen levels through fertigation viz. 120, 160, and 200 kg ha-1 as sub plots. The growth parameters (plant height, LAI, drymatter accumulation), root volume and dry weight, yield attributes (cobs plant-1, kernels cob-1, kernel weight cob-1) kernel yield, stover yield and nitrogen uptake of no till maize increased with increase in water input from 75% PE to 100% PE irrigation schedule in drip irrigation but could not reach the level of significance at 125% PE. Tasseling and silking was hastened in 125% PE schedule. Increase in the level of N application through fertigation from 120 to 160 kg N ha-1 resulted in the increase of all the growth parameters, yield attributes, kernel yield, stover yield and nitrogen uptake. Barrenness and test weight were unaffected by either the irrigation schedules or nitrogen levels. The economic indicators (gross returns, net returns and net benefit: cost ratio) were higher with the irrigation schedule of 125% PE and nitrogen dose of 200 kg N ha-1 applied through fertigation. Increased water input from 75 to 125% PE resulted in decreased water use efficiency but enhanced nitrogen use efficiency while the reverse trend was found with respect to N levels under fertigation

Humour

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POWER QUALITY IMPROVEMENT OF GRID CONNECTED WIND ENERGY SYSTEM

In this paper a control scheme for Battery Energy Storage System-Static Compensator is connected at a point of common coupling to mitigate the power quality issues. The STATCOM control scheme for the grid connected wind energy generation system for power quality improvement will be simulated using MATLAB/SIMULINK in power system block set.Amarked reduction in the Total Harmonic Distortion is observedin source current of Wind Energy Generation System (WEGS) with the incorporation ofthis scheme.The development of the grid co-ordinationrule and the scheme for improvement in power quality norms asper IEC-standard on the grid has been presented.The influence of wind turbine in grid system concerning power quality measurements are active power, reactive power, variation of voltage, flicker, harmonics, and electrical behaviour of switchingoperation.. When Wind Energy is integrated with grid, the issue of power quality arises. Awareness of power quality is highly increased in a sensitive industry

Power Quality Improvement of Grid Connected Wind Energy System

In this paper a control scheme for Battery Energy Storage System-Static Compensator is connected at a point of common coupling to mitigate the power quality issues. The STATCOM control scheme for the grid connected wind energy generation system for power quality improvement will be simulated using MATLAB/SIMULINK in power system block set.Amarked reduction in the Total Harmonic Distortion is observedin source current of Wind Energy Generation System (WEGS) with the incorporation ofthis scheme.The development of the grid co-ordinationrule and the scheme for improvement in power quality norms asper IEC-standard on the grid has been presented.The influence of wind turbine in grid system concerning power quality measurements are active power, reactive power, variation of voltage, flicker, harmonics, and electrical behaviour of switchingoperation.. When Wind Energy is integrated with grid, the issue of power quality arises. Awareness of power quality is highly increased in a sensitive industry

Fcs-mpc Dynamic Reactive Power Control Using Hybrid Active Power Filter

The paper discusses design of reactive power control using FCS-MPC controller implemented through Simulink (proposed), use of hybrid active filter to control and improve reactive power is also discussed in brief. The implementation showed that multivariable cost function presented for converters with LCL filters are also suitable to control hybrid active power filter. An adaptive notch filter is also considered during the implementation. The implementation of FCS-MPC design presented here can be considered as an alternative to classical reactive power control, which offers proper control performance with better dynamic response when compared with other technique

Optimal Placement Of Distributed Generation For Loss Reduction In Distribution System

Due to the increasing interest on renewable sources in recent times, the studies on integration of distributed generation to the power grid have rapidly increased. Distributed generations (DGs) play an important role in distribution networks. Among many of their merits, loss reduction and voltage profile improvement can be the salient specifications of Distributed generations (DG). Non-optimal locations and non-optimal sizes of Distributed generations (DG) units may lead to increase losses, together with bad effect on voltage profile. Proper location of Distributed generations (DGs) in power systems is important for obtaining their maximum potential benefits. Distributed generation (DG) units reduce electric power losses and hence improve reliability and voltage profile. Determination of appropriate size and location of Distributed generation (DG) is important to maximize overall system efficiency

Instantaneouspowerandcurrentstrategiesforcurrentharmonicscancellationusingshuntactivepowerfilterwithpiandfuzzycontrollers

In our day-to-day life, every load creates harmonics. The prevalent difficulties with harmonics arevoltage and current waveform distortions. In addition, electronic equipment like computers, battery chargers, electronic ballasts, variable frequency drives and switched mode power supply generate large amount of harmonics. Issues related to harmonics are of a greater concern because they can overheat the building wiring, cause nuisance tripping, overheat transformer units, and cause random end-user equipment failures. Thus power quality is becoming more and more serious with each passing day. As a result, active power filters (APFs) have gained a lot of attention due to their excellent harmonic compensation

A High-Performance SPWM Controller for Three-Phase UPS Systems Operating Under Highly Nonlinear Loads

The increased use of rectifiers in critical loads employed by the information technologies, and medical and military equipment mandate the design of uninterruptible power supplies (UPS) with high-quality outputs. The highly nonlinear currents drawn especially by high-power single-phase rectifier loads greatly distort the uninterruptible power supplies (UPS) outputs. The distorted uninterruptible power supplies (UPS) voltages cause generation of low dc voltage at the output of the rectifier loads, which causes high current flow, increased power losses, and possibly the malfunction of the critical load or the uninterruptible power supplies (UPS). As a result, different harmonics mitigating techniques have gained a lot of attention. The main objective of this project is to develop simulation of a high-performance Pulse Width Modulation (PWM) technique based AC-DC converter system operating under highly nonlinear loads using MATLAB/SIMULINK. Here, controlled Insulated-gate bipolar transistor (IGBT) based AC-DC converter is used to supply the load instead of Diode or Thyristor Bridge. The pulse width modulationmethod is quite effective in controlling the root mean square (RMS) magnitude of the AC-DC converter output voltages and shape of input current