نتایج جستجو برای: distributed transmission line

تعداد نتایج: 888907  

Journal: :IEEE Transactions on Terahertz Science and Technology 2020

قاضی‌زاده احسائی, مهدی,

In this paper, a new method is proposed for fault location estimation in overhead-cable multi-section transmission lines. This method takes advantage of synchronized samples gathered from both terminals of the line in the time domain. Because of this, it does not need a filter to extract fundamental frequency of the voltages and currents. Thus, it shows a higher accuracy, since it is not influe...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس 1381

آنتن های زیادی با سطح مقطع استوانه ای وجود دارند که در کنار یا روی آنها تعدادی عنصر تابنده با طول محدود وجود دارند. این ساختارهای تقریبا استوانه ای را می توان با روش ‏‏‎s2ds(spectrum of two dimensional solutions)‎‏ تحلیل نمود. به این ترتیب که با استفاده از تبدیل فوریه نسبت به محور استوانه (محور ‏‎z‎‏ )، مسئله الکترومغناطیس سه بعدی اینگونه آنتن ها را می توان بصورت عکس مسائل دو بعدی با تغییرات ها...

Journal: :Decision Support Systems 1999
Richard E. Schuler

Previous experimental and game-theoretic analyses of deregulated electricity markets suggest that communities having four or less effective suppliers, either because of transmission constraints or load characteristics, or retail customers facing suppliers or marketing agents having more than seventy percent of the region’s market, are likely to experience prices well above competitive levels. W...

A new PMU-based fault detection/location algorithm for multi-terminal transmission lines is proposed in this paper, which works on the basis of synchronized voltage and current phasors received from PMUs installed in various terminals. The Clark transform (for transposed transmission lines), Eigen-values and eigenvectors theory (for un-transposed ones) are used to decouple 3-phase differential ...

2013
Luis de Andrade Helder Leite Maria T. P. de Leão

This article describes a time-domain transmission line model based on distributed parameters for transient analysis. This model is based directly on the differential equations for the basic transmission line without any previous simplification. The solution presented here for these differential equations results in a more detailed time-domain model than others models currently in use, and with ...

2015
M. H. Ali Aliyu Sisa Aminu

This paper presents the analysis of the Darlington pair as an element in a distributed amplifier (DA) configuration. The Darlington pair circuit with the input and output inductor of the DA transmission line are included in the analysis of the circuit, this is also simulated. The inherent problem of poor performance is reduced by the inductors. The overall result shows that high power gain at h...

Journal: :energy equipment and systems 0
rahmat aazami faculty of engineering, ilam university, ilam, iran hassan monsef faculty of ece, university of tehran, tehran, iran

this paper proposes a new method for transmission loss allocation. the share of each bus in the transmission line losses is determined using transmission line loss equations with respect to bus-injected currents. then, it is applied to the total network transmission lines. in the proposed method, comparing with other methods, a solution to remove the negative loss allocation has been introduced...

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