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Shielding measures of power transformer to mitigate stray loss and hot spot through coupled 3D FEA

High Voltage 2017年第4期2卷 267-273页

作者： Sujana Dasara vineet prakash mishra Department of Electrical&Electronics Engineering Jawaharlal Nehru Technological UniversityKukatpallyHyderabadIndia High Voltage Engineering Department Bharat Heavy Electricals Limited(BHEL)R&DVikas NagarHyderabadIndia

Leakage flux generated in the power transformers cause stray losses in metallic parts of the *** losses largely affect the transformer hot spot which leads to thermal *** is necessary to mitigate the impact of leakage flux on metallic parts by employing magnetic shunts and eddy current *** clamping structures like flitch plate and end frames experience substantial losses,hence combinations of shielding can be used for better loss *** this study,a case study is performed on a 315 MVA,420/27 kV single-phase generator power *** work is based on coupled three-dimensional(3D)finite-element analysis(FEA)of the transformer model.A new type of magnetic shunt is explored;also different design combinations of shielding are specified in this work for efficient mitigation of hot spots as well as tank walls.

关键词： power walls hence

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Optimizing Storage for Energy Conservation in Tracking Wireless Sensor Network Objects

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Computer Systems Science & Engineering 2023年第5期45卷 1211-1231页

作者： vineet Sharma Mohammad Zubair Khan Shivani Batra Abdullah Alsaeedi prakash Srivastava Department of Computer Science and Engineering KIET Group of InstitutionsDelhi-NCRGhaziabad201206India Department of Computer Science and Information Taibah UniversityMedina42353Saudi Arabia Department of Computer Science Taibah UniversityMedina42353Saudi Arabia Department of Computer Science and Engineering Graphic Era(Deemed to be University)Dehradun248002India

The amount of needed control messages in wireless sensor networks(WSN)is affected by the storage strategy of detected *** broadcasting superfluous control messages consumes excess energy,the network lifespan can be extended if the quantity of control messages is *** this study,an optimized storage technique having low control overhead for tracking the objects in WSN is *** basic concept is to retain observed events in internal memory and preserve the relationship between sensed information and sensor nodes using a novel inexpensive data structure entitled Ordered Binary Linked List(OBLL).Whenever an object passes over the sensor area,the recognizing sensor can immediately produce an OBLL along the object’s *** retrieve the entire information,the OBLL can be traversed with logarithmic complexity which is much less than the traversing complexity of existing linked list *** evaluation and simulations were carried out to ensure that the suggested technique minimizes the number of messages and thus saving energy and extending the network life.

关键词： Energy conservation linked list object tracking wireless sensor networks

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Distributed Simulation Platforms and Data Passing Tools for Natural Hazards Engineering: Reviews, Limitations,and Recommendations

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International Journal of Disaster Risk Science 2021年第5期12卷 617-634页

作者： Lichao Xu Szu-Yun Lin Andrew W.Hlynka Hao Lu vineet R.Kamat Carol C.Menassa Sherif El-Tawil Atul prakash Seymour M.J.Spence Jason McCormick Department of Civil and Environmental Engineering University of MichiganAnn ArborMI 48109USA Department of Electrical Engineering and Computer Science University of MichiganAnn ArborMI 48109USA

here has been a strong need for simulation environments that are capable of modeling deep interdependencies between complex systems encountered during natural hazards,such as the interactions and coupled effects between civil infrastructure systems response,human behavior,and social policies,for improved community *** such complex components with an integrated simulation requires continuous data exchange between different simulators simulating separate models during the entire simulation *** can be implemented by means of distributed simulation platforms or data passing *** order to provide a systematic reference for simulation tool choice and facilitating the development of compatible distributed simulators for deep interdependent study in the context of natural hazards,this article focuses on generic tools suitable for integration of simulators from different fields but not the platforms that are mainly used in some specific *** this aim,the article provides a comprehensive review of the most commonly used generic distributed simulation platforms(Distributed Interactive Simulation(DIS),High Level Architecture(HLA),Test and Training Enabling Architecture(TENA),and Distributed Data Services(DDS))and data passing tools(Robot Operation System(ROS)and Lightweight Communication and Marshalling(LCM))and compares their advantages and *** specific limitations in existing platforms are identified from the perspective of natural hazard *** mitigating the identified limitations,two platform design recommendations are provided,namely message exchange wrappers and hybrid communication,to help improve data passing capabilities in existing solutions and provide some guidance for the design of a new domain-specific distributed simulation framework.

关键词： Civil infrastructure Data passing tools Distributed simulation platforms Hybrid communication Message exchange wrapper Natural hazards

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Reducing shoulder dislocation without anaesthesia or assistant:Validation of a new reduction manoeuvre

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Chinese Journal of Traumatology 2019年第5期22卷 274-277页

作者： Rashid Anjum Subodh Pathak Atul Rai Sharma Jatin Aggarwal Aryan Sharma vineet Pruthi Anil Kumar Chaudhary MM Institute of Medical Sciences&Research Ambala13320乙India

Purpose:Shoulder dislocation comprises 60%of all major joint dislocations worldwide and a number of reduction techniques are described in the literature w让h varying degrees of *** description of a large number of techniques speaks for itself that no method is effective all the times and one should be acquainted with more than one *** ideal method of reduction should be simple,easily reproducible,relatively painless that can be performed unassisted without sedation or anaesthesia w让h minimal or no further *** report our results of using a novel method of anterior shoulder reduction described recently in the literature that claims to fulfil most of the characteristics of an ideal method if not ***:This prospective study was conducted in a tertiary care *** the cases of primary anterior shoulder dislocation presenting within three days of injury without any associated fracture or spine trauma with or without greater tuberosity fracture were *** reduction was done using a novel method by orthopaedic residents in all *** need for a second reduction attempt or anaesthesia was considered a treatment *** taken for reduction,pain felt during reduction and complications if any were ***:There were 47(77.04%)males and 14(22.95%)females with a mean age of(37.04±12.63)*** new technique was effective in locating a shoulder dislocation on the first attempt in 58 of the 61 dislocated shoulders(95.08%).The remaining three shoulders were reduced on second attempt by the same ***,pre-medication or anaesthesia was not used in any *** average time taken for the shoulder reductio n was(130.5±25.8)sec onds and con fide nee interval(95%)124-137 *** complications were not seen in any of the ***:This relatively painless technique of shoulder reduction is easy to acquire and practice in emergency *** advantages of this manoeuvre and its associated safety

关键词： Shoulder dislocation External rotation manoeuvre prakash's manoeuvre

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