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Broadband services over power lines
Svoboda, Jan ; Martinásek, Zdeněk (referee) ; Stančík, Peter (advisor)
The Bachelor´s thesis is intend on assembly of basic informations from area of PLC systems. It envisages the modern problems in area of communication on the energy supply networks. By the aim is provide compact informations about particular areas of usage PLC systems – both in a household, an automatic exercises and in a possibilities of broadband. The first part of thesis includes the theoretical informations about PLC network. The second part considers by testing of basic parameters PLC network. Of all the made measurements are draw conclusions and valorize the usability of metering devices.
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Implementation of computer models of lines for PLC
Mrákava, Petr ; Mlýnek, Petr (referee) ; Mišurec, Jiří (advisor)
The subject of this thesis is to become familiar with the different parameters describing the lines, and the possibility of modeling data and power models. The thesis also outlined the difference in the mechanical structure of different types of cables. The practical part focuses only on the power cables and measure their basic parameters. Then is created computer model which describes the behavior of cable lines at higher frequencies than are primarily intended. The final section is an experimental network created by the PLC for remote reading of electricity meters, and it measured different transmission properties.
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Data transmission over distribution power networks
Vašíček, Filip ; Mišurec, Jiří (referee) ; Zeman, Václav (advisor)
This thesis brings together information about the data transmission over distribution power networks with a view to the broadband systems. The division of PLC systems is mentioned and the principle and characteristics of PLC technology are described. I was also interested in topology and a description of elements of PLC network. There are presented the two most frequently used systems: HomePlug and DS2. Next section contains an analysis of network architecture, especially the physical layer. The protection of data against errors and the OFDM method are described. There are also analyzed other layers of the network reference model, the mechanism of quality of services and the data encryption using AES. I was also focused on the issues of standardization of PLC, the electromagnetic compatibility and a description of the international project OPERA. In the practical part is processed the concept of the laboratory PLC network with elements of the system Defidev/DS2. Functionality of the network has been tested by measuring of the bit rate on the physical and application layer.
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Wideband methods of data transmission over power networks
Svoboda, Pavel ; Mišurec, Jiří (referee) ; Zeman, Václav (advisor)
The aim of this work was to peruse and desribe the high-speed data technology communicating over energy network. In this work was investigated broadband system communicating over low power distribution network. The laboratory network was designed for measuring parametres of this communication and performed set of tests. Lended devices were described, properties of technology specification and methods of connection and management were introduced. Management, configuration and measuring over web interface on the NMS device was described and simple dividision into corresponding functional blocks corresponding to structure of web bookmaks was made. Metodology of individual tests, grounded on documentation “recomandation” RFC and on introduced works, was elaboratly described. Used tools, their properties and managements were described. The transmission speed on application and physical layer were followed primarily, frequency dependencies on signal noise ratio and bits per carrier were followed secondary. Measured results from individuals tests were compared among each other and evaulated. This observation leaded into decision on needed criteria for varius application. The suitaibility for integration into communication network for maintaining corresponding QoS was appreised. Testing and chosen types of tests in this project were standardized and integrated into ITU standard. Individual tests are able to compare from the view of their testify charactestic.
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Cascade model of power lines for PLC
Haluza, Tomáš ; Mlýnek, Petr (referee) ; Mišurec, Jiří (advisor)
This bachelor´s thesis deals with studies of power-line in terms of possibilities for using grid as a transmission medium for data transmission. Theoretical part is focused on PLC technology and the parameters of high-voltage lines. In very practical part the modeling of power-line by cascade parameters of two-port network is examined. Influence of va-rious changes in network topology are included in this thesis and also their influence on transfer function. The last part outlines the method of modeling PLC transmission chan-nel that is created as a FIR filter with finite impulse response.
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Cascade model of power lines for PLC
Haluza, Tomáš ; Mlýnek, Petr (referee) ; Mišurec, Jiří (advisor)
This bachelor´s thesis deals with studies of power-line in terms of possibilities for using grid as a transmission medium for data transmission. Theoretical part is focused on PLC technology and the parameters of high-voltage lines. In very practical part the modeling of power-line by cascade parameters of two-port network is examined. Influence of va-rious changes in network topology are included in this thesis and also their influence on transfer function. The last part outlines the method of modeling PLC transmission chan-nel that is created as a FIR filter with finite impulse response.
|
|
|
Broadband services over power lines
Svoboda, Jan ; Martinásek, Zdeněk (referee) ; Stančík, Peter (advisor)
The Bachelor´s thesis is intend on assembly of basic informations from area of PLC systems. It envisages the modern problems in area of communication on the energy supply networks. By the aim is provide compact informations about particular areas of usage PLC systems – both in a household, an automatic exercises and in a possibilities of broadband. The first part of thesis includes the theoretical informations about PLC network. The second part considers by testing of basic parameters PLC network. Of all the made measurements are draw conclusions and valorize the usability of metering devices.
|
|
|
Implementation of computer models of lines for PLC
Mrákava, Petr ; Mlýnek, Petr (referee) ; Mišurec, Jiří (advisor)
The subject of this thesis is to become familiar with the different parameters describing the lines, and the possibility of modeling data and power models. The thesis also outlined the difference in the mechanical structure of different types of cables. The practical part focuses only on the power cables and measure their basic parameters. Then is created computer model which describes the behavior of cable lines at higher frequencies than are primarily intended. The final section is an experimental network created by the PLC for remote reading of electricity meters, and it measured different transmission properties.
|
|
|
Data transmission over distribution power networks
Vašíček, Filip ; Mišurec, Jiří (referee) ; Zeman, Václav (advisor)
This thesis brings together information about the data transmission over distribution power networks with a view to the broadband systems. The division of PLC systems is mentioned and the principle and characteristics of PLC technology are described. I was also interested in topology and a description of elements of PLC network. There are presented the two most frequently used systems: HomePlug and DS2. Next section contains an analysis of network architecture, especially the physical layer. The protection of data against errors and the OFDM method are described. There are also analyzed other layers of the network reference model, the mechanism of quality of services and the data encryption using AES. I was also focused on the issues of standardization of PLC, the electromagnetic compatibility and a description of the international project OPERA. In the practical part is processed the concept of the laboratory PLC network with elements of the system Defidev/DS2. Functionality of the network has been tested by measuring of the bit rate on the physical and application layer.
|
|
|
Wideband methods of data transmission over power networks
Svoboda, Pavel ; Mišurec, Jiří (referee) ; Zeman, Václav (advisor)
The aim of this work was to peruse and desribe the high-speed data technology communicating over energy network. In this work was investigated broadband system communicating over low power distribution network. The laboratory network was designed for measuring parametres of this communication and performed set of tests. Lended devices were described, properties of technology specification and methods of connection and management were introduced. Management, configuration and measuring over web interface on the NMS device was described and simple dividision into corresponding functional blocks corresponding to structure of web bookmaks was made. Metodology of individual tests, grounded on documentation “recomandation” RFC and on introduced works, was elaboratly described. Used tools, their properties and managements were described. The transmission speed on application and physical layer were followed primarily, frequency dependencies on signal noise ratio and bits per carrier were followed secondary. Measured results from individuals tests were compared among each other and evaulated. This observation leaded into decision on needed criteria for varius application. The suitaibility for integration into communication network for maintaining corresponding QoS was appreised. Testing and chosen types of tests in this project were standardized and integrated into ITU standard. Individual tests are able to compare from the view of their testify charactestic.
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