نتایج جستجو برای: transmission losses

تعداد نتایج: 306105  

2007

In Denmark, a large part of the electricity is produced by wind turbines and combined heat and power plants (CHPs). Most of them are connected to the network through distribution systems. Because the production units, the distribution systems and the transmission system are owned by different companies, rules regulating the conditions and fees for transmission of power apply. In Western Denmark...

2013
Alain Glatigny Wolfram Heckmann Lucas Hamann Martin Braun Heike Barth Johannes Dasenbrock Chenjie Ma Thorsten Reiman

Annual electricity distribution losses average 4% in the European Union. These losses represent 7 billion Euros in annual waste. New regulations are forcing electrical distributors to enhance efficiency across their networks. Network operators are also challenged to integrate alternative energy generation and electric vehicles into their grids. This paper offers a strategy for leveraging smart ...

2007
CAROLINA REGOLI

Nowadays lots of applications in telecommunications require a wide bandwidth to transmit more information and improve the quality on the transmission of this information. In order to guarantee this condition low losses systems are designed; these losses can be classified in dissipation losses and mismatch losses. There are different classic methods for impedance matching, but they reach the imp...

Journal: :global journal of environmental science and management 0
f. dalir department of environmental engineering, graduate faculty of environment, university of tehran, tehran, iran m. shafiepour motlagh department of environmental engineering, graduate faculty of environment, university of tehran, tehran, iran k. ashrafi department of environmental engineering, graduate faculty of environment, university of tehran, tehran, iran

in this study a pseudo comprehensive carbon footprint model for fossil fuel power plants is presented. parameters which their effects are considered in this study include: plant type, fuel type, fuel transmission type, internal consumption of the plant, degradation, site ambient condition, transmission and distribution losses. investigating internal consumption, degradation and site ambient con...

2012
Daniel Segovia-Vargas Vicente González-Posadas José Luis Jiménez-Martín Luis Enrique García-Muñoz Oscar García-Pérez José Luis Jiménez

Composite transmission lines are one of the main developments in the increasingly popular field of electromagnetic metamaterials, artificial electromagnetic structures with both negative electric permittivity and magnetic permeability (Caloz & Itoh, 2005). These structures present a backward wave or left-handed (LH) propagation instead of the conventional right-handed one. The first experimenta...

Journal: :Optics express 2013
Miguel Navarro-Cía Miriam S Vitiello Carlos M Bledt Jeffrey E Melzer James A Harrington Oleg Mitrofanov

A low-loss and low-dispersive optical-fiber-like hybrid HE₁₁ mode is developed within a wide band in metallic hollow waveguides if their inner walls are coated with a thin dielectric layer. We investigate terahertz (THz) transmission losses from 0.5 to 5.5 THz and bending losses at 2.85 THz in a polystyrene-lined silver waveguides with core diameters small enough (1 mm) to minimize the number o...

Journal: :international journal of smart electrical engineering 2013
s.a hashemi zadeh a.a gharaveisi gh shahgholian

in the deregulated power systems, transmission congestion is one of the significant and main problems of the electrical networks which can cause incremental cost in the energy. this problem has resulted to new challenging issues in different parts of power systems which there was not in the traditional systems or at least had very little importance. transmission congestion happens when the maxi...

2013
Alain Glatigny Wolfram Heckmann Lucas Hamann Martin Braun Heike Barth Johannes Dasenbrock Chenjie Ma Thorsten Reiman

Annual electricity distribution losses average 4% in the European Union. These losses represent 7 billion Euros in annual waste. New regulations are forcing electrical distributors to enhance efficiency across their networks. Network operators are also challenged to integrate alternative energy generation and electric vehicles into their grids. This paper offers a strategy for leveraging smart ...

امینی, امیر, فلقی, حمید, نجفی, ارسلان ,

Economic dispatch as an important problem in production management and power system operation, is studied here with a view to improve realistic simulation, considering practical limitations such as valve point effect, ramp rate limits, prohibited operating zones, multiple fuel sources and power transmission losses. Hence, a new optimization method is proposed based on modified shuffled frog lea...

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