نتایج جستجو برای: Trip Coil
تعداد نتایج: 34404 فیلتر نتایج به سال:
In this article, an innovative supervision system will be proposed that can observe and analyze health of Circuit Breaker’s trip coil. The proposed design also logs changes in the coil's quality and informs network supervisor in case of Circuit Breaker (CB) failure. This system injects small direct currents to the Circuit Breaker connections and the trip coil to compute CB’s health and characte...
Vacuum circuit breaker becomes more and more complicated, integrated, high-speed and intellectualized. To insure vacuum circuit breaker in its good conditions, the function of fault diagnosis gets more important than before in the process of repairing. This paper is addressed a modelbased fault detection framework for vacuum circuit breaker by trip coil analysis. At first, the electromagnetic m...
Through their interaction with the TNF receptor-associated factor (TRAF) family, members of the tumor necrosis factor receptor (TNFR) superfamily elicit a wide range of biological effects including differentiation, proliferation, activation, or cell death. We have identified and characterized a novel component of the receptor-TRAF signaling complex, designated TRIP (TRAF-interacting protein), w...
پدیده transrormation induced plasticity اولین بار در آلیاژ های fe-ni مشاهده شد، که در اثر وقوع این پدیده، شکل پذیری فولادهای استحکام بالا، افزایش می یابد. این پدیده علاوه بر ترکیب شیمیایی فولاد نیاز به سیکل ترمودینامیکی خاصی دارد تا استحاله را کنترل کند فولادهای trip ترکیب مناسبی از استحکام، داکتیلیتی، چقرمگی و مقاومت به خوردگی را دارا می باشند. به دلیل خاصیت جذب انرژی بالا، این فولاد ها امروزه...
فولادهای trip دارای ساختارهای چند فازی شامل فریت، بینیت و آستنیت باقی مانده به همرا مقدار کمی مارتنزیت می باشند. آستنیت باقی مانده و مورفولوژی آن موثرترین فاز در ریز ساختار فولادهای trip محسوب می شود و باعث بهبود شکل پذیری و استحکام این فولادها می شود. در این پژوهش تأثیر ریز ساختار بر خواص مکانیکی یک فولاد trip کارگرم شده، بررسی شد. بدین منظور فولادی trip حاوی si، mn وحدود 2/0 درصد کربن پس ازعم...
The trip mechanism is a weakness in circuit breakers. Traditional fault identification based on the coil current difficult to report early mechanical defects such as coil-plunger jam. Here, vibration signal during process was extracted. Based and signal, characteristics of are analyzed. phase space reconstruction (PSR) method used extract features from signal. Combined with waveform, feature se...
With ongoing efforts to make the power grid smarter, there is a large emphasis on the automation and data analytics. Substation automation is a key enabling technology for online monitoring, diagnosis and prediction for the health condition of the substation assets. Circuit breakers (CB) are one of the most vital components in a substation for tripping action required during the fault occurrenc...
We present a study of the parallel tempering (replica exchange) Monte Carlo method, with special focus on the feedbackoptimized parallel tempering algorithm, used for generating an optimal set of simulation temperatures. This method is applied to a lattice simulation of a homopolymer chain undergoing a coil-to-globule transition upon cooling. We select the optimal number of replicas for differe...
Introduction Signal intensity uniformity in a magnetic resonance (MR) image indicates how well the MR imaging (MRI) system represents an object. One of the major sources of image non-uniformity in high-field MRI scanners is inhomogeneity of radio-frequency coil. The aim of this study was to investigate non-uniformity in head, head and neck, and body coils and compare the obtained results to det...
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