نتایج جستجو برای: electric power transmission

تعداد نتایج: 817607  

2001
H. Hahn D. Davino

Concerns regarding possible transverse instabilities in RHIC and the SNS pointed to the need for measurements of the transverse coupling impedance of ring components. The impedance of the RHIC injection and abort kicker was measured using the conventional method based on the S21 forward transmission coefficient. A commercial 450 Ω twin-wire Lecher line were used and the data was interpreted via...

2004
J. Mora J. Meléndez Marc Vinyoles J. Sánchez Manel Castro

The problem of fault location has been studied deeply for transmission lines due its importance in the power system. Nowadays the problem of fault location on distribution systems is receiving special attention mainly because of the power quality regulations. This paper presents some of the most relevant methods for fault location in radial power systems. Additionally here is presented an hybri...

2016
A. Rong P. B. Luh R. Lahdelma

Abstract—High penetration of intermittent renewable energy sources (RES) such as solar power and wind power into the energy system has caused temporal and spatial imbalance between electric power supply and demand for some countries and regions. This brings about the critical need for coordinating power production and power exchange for different regions. As compared with the poweronly systems,...

2002
J. Zhang I. Dobson F. L. Alvarado

In bulk electric power transfer capability computations, the transmission reliability margin accounts for uncertainties related to the transmission system conditions, contingencies, and parameter values. We propose a formula which quantifies transmission reliability margin based on transfer capability sensitivities and a probabilistic characterization of the various uncertainties. The formula i...

2004
M. Pasquier

The Center for Transportation Research (CTR) Vehicle Systems team modified a Nissan CK-2 Continuously Variable Transmission (CVT) for a diesel hybrid powertrain application. Mechanical and electrical modifications were made to the CVT, both internal and external to the transmission. The goal of this experiment was to investigate and demonstrate the potential of CVT for diesel engines hybrid ele...

Ali Mansouri Ehsan Mohamadian Hadi Mirzaei Nosratallah Mohammadbeigi Rahmat Aazami,

With the development of restructured power systems and increase of prices in some hours of day and increase fuel price, demand response programs were noticed more by customers. demand response consists of a series of activities that governments or utilities design to change the amount or time of electric energy consumption, to achieve better social welfare or some times for maximizing the benef...

2008
Valentina Cecchi

A Modeling Approach for Electric Power Transmission Lines in the Presence of Non-Fundamental Frequencies Valentina Cecchi Karen Miu, Ph.D. In light of the fact that modern power systems are expected to exhibit an increased level of harmonic and inter-harmonic frequency components, a modeling tool for electric power transmission lines was developed to determine the appropriate model structure un...

2014
Agustín Flores Eduardo Quiles Emilio García Francisco Morant Antonio Correcher

This work proposes a new method for fault diagnosis in electric power systems based on neural modules. With this method the diagnosis is performed by assigning a neural module for each type of component comprising the electric power system, whether it is a transmission line, bus or transformer. The neural modules for buses and transformers comprise two diagnostic levels which take into consider...

2009
Andrew J. Schmidt

Standardization of high voltage electric transmission line siting methodologies, by using GIS spatial analysis tools, has great potential in helping predict and defend new optimal route corridors. A standard methodology that incorporates multiple weighted perspectives of influence can aid in the route approval by the governmental and regulating permitting entities and the support of the affecte...

Journal: :The Review of scientific instruments 2010
Alexander W Kieckhafer Mitchell L R Walker

A rf power system has been developed, which allows the use of rf plasma devices in an electric propulsion test facility without excessive noise pollution in thruster diagnostics. Of particular importance are thrust stand measurements, which were previously impossible due to noise. Three major changes were made to the rf power system: first, the cable connection was changed from a balanced trans...

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