نتایج جستجو برای: telecommunication transmission line
تعداد نتایج: 650649 فیلتر نتایج به سال:
یکی از انواع متداول مولدهای توان پالسی، مولد پالس بلوملین است که در آن، آرایش خاصی از خطوط انتقال به ویژه کابل های هم محور به کار می رود. ازآنجا که این خطوط، وظیفه ذخیره انرژی وتعیین شکل پالس دارند. مولد پالس بلوملین در دسته مولدهایی قرار می گیرد که از خطوط شکل دهنده پالس یا به اختصار pfl برای تولید پالس استفاد ه می کنند. از ویژگی های مهم اینگونه مولدها می توان به ایجاد پالس تقریبا مربعی و زمان...
in this paper power system model is represented in a new domain that relates to multi-resolution analysis (mra) space. by developing mathematical model of elements in this space using galerkin method, a new alternative method for power system simulation in nonsinusoidal and periodic conditions is developed. the mathematical formulation and characteristics of new proposed space is expressed. als...
current inversion condition leads to incorrect operation of current based directional relay in power system with series compensated device. application of the intelligent system for fault direction classification has been suggested in this paper. a new current directional protection scheme based on intelligent classifier is proposed for the series compensated line. the proposed classifier uses ...
We consider the series-connected Josephson transmission line (JTL), constructed from junctions, capacitors and (possibly) resistors. calculate velocity of shocks in discrete lossy JTL. study thoroughly continuum quasi-continuum approximations to JTL, both lossless lossy. In framework these we show that compact travelling waves JTL are kinks solitons, their velocities. On top each above mentione...
In this article, we describe an approach for computing the current trust level of individual users towards an online system and present initial validation results from a small-scale experiment. This trust computational model relies upon survey research for identifying the set of key trust attributes and grouping users into four segments of expected behaviors. Each user’s initial trust level is ...
using new approaches to optimize the process of power transmission line routing can solve many complex problems which power transmission line routing decision-makers are faced. due to the expansion of involved parameters we can consider multi-objective evolutionary algorithms as appropriate method in this area. in this thesis with using multi-objective evolutionary algorithms nsga-ii and offere...
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