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Detalles de la revista
Formato
Revista
eISSN
2255-8896
Publicado por primera vez
18 Mar 2008
Periodo de publicación
6 veces al año
Idiomas
Inglés

Buscar

Volumen 56 (2019): Edición 1 (February 2019)

Detalles de la revista
Formato
Revista
eISSN
2255-8896
Publicado por primera vez
18 Mar 2008
Periodo de publicación
6 veces al año
Idiomas
Inglés

Buscar

7 Artículos
Acceso abierto

Categorisation of Ancillary Services for Providers

Publicado en línea: 28 Mar 2019
Páginas: 3 - 20

Resumen

Abstract

The focus of the work presented here is to raise awareness of how ancillary services within the NordPool area could be of value in supporting the future grid, and who could be the provider of these services. The ancillary services considered here are not limited to the current market, but also services for future market solutions as well as services for fulfilment of grid codes. The goal is to promote the development of existing and novel solutions to increase the utilisation and thus the value of equipment within the power system. The paper includes a techno-economical categorisation of ancillary services, from a provider’s perspective, presenting opportunities and competition. Furthermore, procurers of services could utilise this kind of categorisation to identify possible providers or partners. The analysis of the categorisation shows a broad range of possible providers for each service and a broad range of possible services from each provider.

Palabras clave

  • ancillary services
  • black start
  • congestion management
  • frequency support
  • islanding
  • power quality
  • provider
  • stability
  • system restoration
  • voltage support
Acceso abierto

Optical Properties of New Type of Glazing Unit Modified By Phase Change Material (Theoretical Approach)

Publicado en línea: 28 Mar 2019
Páginas: 21 - 28

Resumen

Abstract

The paper presents the use of phase change material (PCM) in window application that was studied in the framework of the ERA-NET-LAC Project “Solar Hybrid Translucent Component for Thermal Energy Storage in Buildings” (SOLTREN). Increase of energy savings in buildings is the main aim of this study. To achieve the aim, it has been decided to create a theoretical model of the impact of the PCM on the characteristics of the window and, at the next stage, to experimentally test the model. Paraffin has been chosen as the most suitable and available material as PCM. Pure paraffin has high transparency in liquid phase, and dull white colour in solid phase. The paper shows results of total transmittance and absorption spectra for different thicknesses of paraffin with a melting temperature of 35°C, as well as absorption of the glass sample with PCM at different angles of incidence of light.

Palabras clave

  • energy savings in buildings
  • optical properties
  • phase change material
  • window glazing
Acceso abierto

Study of the Processes of Near Identical, Nanoprene, Neuro Progenitor Electric Drive

Publicado en línea: 28 Mar 2019
Páginas: 29 - 40

Resumen

Abstract

The article deals with the artificial multilayer neural network with direct signal transmission and reverse error propagation, which operates in the mode of identification of static and dynamic characteristics of the electric drive. To study processes of nearly identical, nanoprene of neuroprogenitor has been developed by the research stand, which is described in the article. As a result of research on the stand, the results show that the neural network is well enough to identify the static and dynamic characteristics of the electric drive.

Palabras clave

  • clustering
  • drive
  • materials science
  • neural network
  • training
Acceso abierto

Investigation of Wireless Channels of 802.11 Standard in the 5ghz Frequency Band

Publicado en línea: 28 Mar 2019
Páginas: 41 - 52

Resumen

Abstract

The paper presents the study of wireless channel over-the-air channels of the family of 802.11х standards within the 5GHz frequency band, taking into account the influence of architectural obstacles within premises. The following parameters have been selected as the main parameters in the course of the study: an efficient rate of information transmission, signal power at the receiver input, as well as channel carrying capacity. As a result of the experimental study, the author has found out relevant mathematical expression for estimation of the efficiency criterion of wireless channels of the family of 802.11х standards for the 5GHz frequency band, taking into account relevant architectural obstacles within premises.

Palabras clave

  • architectural obstacles
  • effective data rate
  • efficiency factor
  • signal strength
  • threshold value
Acceso abierto

Investigation of The Influence of High Frequency Electromagnetic Fields on Sorption Processes

Publicado en línea: 28 Mar 2019
Páginas: 53 - 59

Resumen

Abstract

The present paper studies the effect of high frequency electromagnetic fields on sorption processes. The equation of sorption kinetics describes the main mechanisms of the above effect. This can serve as the basis for more effective high frequency electromagnetic field technology to increase oil recovery by reducing adsorption of oil components on the porous bed skeleton.

Palabras clave

  • adsorption
  • high frequency electromagnetic field
  • porous structure
Acceso abierto

Electronic Processes in Solid State: Dirac Framework

Publicado en línea: 28 Mar 2019
Páginas: 60 - 69

Resumen

Abstract

The present paper proposes canonical Dirac framework adapted for application to the electronic processes in solid state. The concern is a spatially periodic structure of atoms distinguished by birth and annihilation of particle states excited due to interaction with the electromagnetic field. This implies replacing the conventional energy-momentum relation specific of the canonical Dirac framework and permissible for particle physics by a case specific relation available for the solid state. The advancement is a unified and consistent mathematical framework incorporating the Hilbert space, the quantum field, and the special relativity. Essential details of the birth and annihilation of the particle states are given by an illustrative two-band model obeying basic laws of quantum mechanics, special relativity, and symmetry principles maintained from the canonical Dirac framework as a desirable property and as a prerogative for the study of the particle coupling and correlation.

Palabras clave

  • canonical quantization
  • Dirac field
  • Hilbert spaces
  • quasi-particle birth/annihilation
Acceso abierto

V-Function Method: Some Solutions of Direct and Inverse Dynamics Problems in A New Statement

Publicado en línea: 28 Mar 2019
Páginas: 70 - 81

Resumen

Abstract

Based on the V-function method, the properties of wave nature of object motion are studied for object uniform motion with constant speed and for harmonic oscillator. It follows from the V-function method that object wave motion is inseparably linked with its trajectory motion. The V-function method consists of the principle of local variation and a new statement of the direct and inverse dynamics problems. The proposed approach made it possible to make the optico-mechanical analogy that obtained a new continuation. A comparison is made with the results obtained by Schrödinger for a harmonic oscillator.

Palabras clave

  • optico-mechanical analogy
  • harmonic oscillator
  • variation principle
  • wave equation
  • wave function
7 Artículos
Acceso abierto

Categorisation of Ancillary Services for Providers

Publicado en línea: 28 Mar 2019
Páginas: 3 - 20

Resumen

Abstract

The focus of the work presented here is to raise awareness of how ancillary services within the NordPool area could be of value in supporting the future grid, and who could be the provider of these services. The ancillary services considered here are not limited to the current market, but also services for future market solutions as well as services for fulfilment of grid codes. The goal is to promote the development of existing and novel solutions to increase the utilisation and thus the value of equipment within the power system. The paper includes a techno-economical categorisation of ancillary services, from a provider’s perspective, presenting opportunities and competition. Furthermore, procurers of services could utilise this kind of categorisation to identify possible providers or partners. The analysis of the categorisation shows a broad range of possible providers for each service and a broad range of possible services from each provider.

Palabras clave

  • ancillary services
  • black start
  • congestion management
  • frequency support
  • islanding
  • power quality
  • provider
  • stability
  • system restoration
  • voltage support
Acceso abierto

Optical Properties of New Type of Glazing Unit Modified By Phase Change Material (Theoretical Approach)

Publicado en línea: 28 Mar 2019
Páginas: 21 - 28

Resumen

Abstract

The paper presents the use of phase change material (PCM) in window application that was studied in the framework of the ERA-NET-LAC Project “Solar Hybrid Translucent Component for Thermal Energy Storage in Buildings” (SOLTREN). Increase of energy savings in buildings is the main aim of this study. To achieve the aim, it has been decided to create a theoretical model of the impact of the PCM on the characteristics of the window and, at the next stage, to experimentally test the model. Paraffin has been chosen as the most suitable and available material as PCM. Pure paraffin has high transparency in liquid phase, and dull white colour in solid phase. The paper shows results of total transmittance and absorption spectra for different thicknesses of paraffin with a melting temperature of 35°C, as well as absorption of the glass sample with PCM at different angles of incidence of light.

Palabras clave

  • energy savings in buildings
  • optical properties
  • phase change material
  • window glazing
Acceso abierto

Study of the Processes of Near Identical, Nanoprene, Neuro Progenitor Electric Drive

Publicado en línea: 28 Mar 2019
Páginas: 29 - 40

Resumen

Abstract

The article deals with the artificial multilayer neural network with direct signal transmission and reverse error propagation, which operates in the mode of identification of static and dynamic characteristics of the electric drive. To study processes of nearly identical, nanoprene of neuroprogenitor has been developed by the research stand, which is described in the article. As a result of research on the stand, the results show that the neural network is well enough to identify the static and dynamic characteristics of the electric drive.

Palabras clave

  • clustering
  • drive
  • materials science
  • neural network
  • training
Acceso abierto

Investigation of Wireless Channels of 802.11 Standard in the 5ghz Frequency Band

Publicado en línea: 28 Mar 2019
Páginas: 41 - 52

Resumen

Abstract

The paper presents the study of wireless channel over-the-air channels of the family of 802.11х standards within the 5GHz frequency band, taking into account the influence of architectural obstacles within premises. The following parameters have been selected as the main parameters in the course of the study: an efficient rate of information transmission, signal power at the receiver input, as well as channel carrying capacity. As a result of the experimental study, the author has found out relevant mathematical expression for estimation of the efficiency criterion of wireless channels of the family of 802.11х standards for the 5GHz frequency band, taking into account relevant architectural obstacles within premises.

Palabras clave

  • architectural obstacles
  • effective data rate
  • efficiency factor
  • signal strength
  • threshold value
Acceso abierto

Investigation of The Influence of High Frequency Electromagnetic Fields on Sorption Processes

Publicado en línea: 28 Mar 2019
Páginas: 53 - 59

Resumen

Abstract

The present paper studies the effect of high frequency electromagnetic fields on sorption processes. The equation of sorption kinetics describes the main mechanisms of the above effect. This can serve as the basis for more effective high frequency electromagnetic field technology to increase oil recovery by reducing adsorption of oil components on the porous bed skeleton.

Palabras clave

  • adsorption
  • high frequency electromagnetic field
  • porous structure
Acceso abierto

Electronic Processes in Solid State: Dirac Framework

Publicado en línea: 28 Mar 2019
Páginas: 60 - 69

Resumen

Abstract

The present paper proposes canonical Dirac framework adapted for application to the electronic processes in solid state. The concern is a spatially periodic structure of atoms distinguished by birth and annihilation of particle states excited due to interaction with the electromagnetic field. This implies replacing the conventional energy-momentum relation specific of the canonical Dirac framework and permissible for particle physics by a case specific relation available for the solid state. The advancement is a unified and consistent mathematical framework incorporating the Hilbert space, the quantum field, and the special relativity. Essential details of the birth and annihilation of the particle states are given by an illustrative two-band model obeying basic laws of quantum mechanics, special relativity, and symmetry principles maintained from the canonical Dirac framework as a desirable property and as a prerogative for the study of the particle coupling and correlation.

Palabras clave

  • canonical quantization
  • Dirac field
  • Hilbert spaces
  • quasi-particle birth/annihilation
Acceso abierto

V-Function Method: Some Solutions of Direct and Inverse Dynamics Problems in A New Statement

Publicado en línea: 28 Mar 2019
Páginas: 70 - 81

Resumen

Abstract

Based on the V-function method, the properties of wave nature of object motion are studied for object uniform motion with constant speed and for harmonic oscillator. It follows from the V-function method that object wave motion is inseparably linked with its trajectory motion. The V-function method consists of the principle of local variation and a new statement of the direct and inverse dynamics problems. The proposed approach made it possible to make the optico-mechanical analogy that obtained a new continuation. A comparison is made with the results obtained by Schrödinger for a harmonic oscillator.

Palabras clave

  • optico-mechanical analogy
  • harmonic oscillator
  • variation principle
  • wave equation
  • wave function

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