Despite the fact that the agricultural process is more data-driven, exact, and intelligent than ever before, the reality is that today’s agriculture industry is more data-driven, precise, and intelligent than ever before, regardless of public perception. Virtually every industry has been altered by the rapid expansion of Internet-of-Things (IoT)-based technologies, including “smart agriculture,” which has transitioned from statistical to quantitative methodologies. Such large advancements are upending conventional farming practises and offering new chances in the middle of numerous issues. A new paper looks at the promise of wireless sensors and the Internet of Things in agriculture, as well as the challenges that may occur when these technologies are integrated with traditional farming methods. Using Internet of Things (IoT) devices and communication protocols, wireless sensors utilized in agriculture applications are fully investigated. Sensors for soil preparation, crop status, irrigation, insect and pest detection, and other agricultural applications are on the list. From sowing to harvesting, packing, and transportation, this technique is explained. This article also discusses the use of unmanned aerial vehicles for agricultural monitoring and other useful purposes, such as crop yield optimization. When feasible, cutting-edge IoT-based agricultural ideas and systems are presented. Finally, we highlight present and future IoT trends in agriculture, as well as possible research challenges, based on this comprehensive analysis.
The basic concept in designing of any power lines in transmission of ac-dc power with power upgrading using UPFC is proposed through a single circuit ac transmission line. In this proposal certain limitation are their due to the use of ground as return path. More ever the instantaneous value of each conductor voltage with respect to ground becomes higher than the Line-Line voltage. By using UPFC that is unified power flow controller we can make it possible to handle practically all power flow control and transmission line compensation problem which provide functional flexibility in power which is not possible by the use of conventional thyristor control system. In this paper we have design UPFC to improve stability of power oscillation that are caused due to nonlinearity of the load. MATLAB-Simulink model has been develop for this concept.
The increase use of modern sensitive and sophisticated loads connected to distribution system causes various problems to the system. The major problems are voltage sag and swell, there is need to compensate it .Today most of the distribution companies are using power semiconductor based devices for improving power quality. Among the various custom power devices, Dynamic voltage restorer is used for compensation in this paper, which is most popular and widely used method. Here, in phase compensation technique of DVR is used with battery energy storage system. The DVR's life time is improved by replacing battery with super capacitor. Super capacitor are most suitable short duration energy requirement. The control technique employed here is SRF controller. The overall work is carried out in MATLAB Simulink.
This paper deals with the power quality condition which is the integration of the series active and shunt active filter the main concept is that while considering the harmonic distortion or the voltage mitigation problem of the device UPQC usually compensate various element of the power system which has a negative impact on the system by eliminating it UPQC is a reliable device due to its nominal cost and fast response with low error handing capabilities. Whenever we consider any transmission and distribution system there are many electrical loads which are very important for the facing of the voltage variation .This paper present a novel method through which we will developing a control method for shunt active filter and PQ theory based control technique for series active filter to compensate power problem in a 3 phase four wire UPQC .The purpose UPQC will improve the power quality of power distribution system under balanced and distorted load condition. The control scheme used is the hysteresis voltage controller by using a-b-c to d-q transformation.
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