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Simulator of channel response of Power Line Communication in Omnet++
Karas, Pavel ; Šilhavý, Pavel (referee) ; Mlýnek, Petr (advisor)
The diploma´s thesis is focussed on principles and characteristics of Powerline Communication. Powerline communication is a technology using powerlines for transmitting information. Its narrowband variant is developing in the field of remote data reading nowadays. There is a lot of solutions that need to be tested and simulated prior ro putting into practice. This thesis deals with preparing the OMNeT++ simulation enviroment for purposes of simulating the narrowband service PLC.
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Possibilities of data communication over LV power lines
Pataj, Jiří ; Zeman, Václav (referee) ; Mišurec, Jiří (advisor)
This thesis deals with possibilities of data communication on low voltage power lines, so-called PLC. This technology allows data transfer on power lines. According frequency band the PLC can be subdivide into narrowband or broadband class.The first part of the thesis deals with theoretical knowledge of data communication on power lines and describes technical solutions. Second part of the thesis deals with narrowband PLC, which is accessible for commercial usage and it is suitable for remote data collection. The last part of the thesis focuses on measuring with device PowerLineDHP-301 made by D-link. The results are real bitrates depending on distance and quality of specific connection.
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Calculation of the network steady state on the voltage level 110 kV
Macháč, Petr ; Vaculík, Petr (referee) ; Mastný, Petr (advisor)
This thesis deals with load flow calculation of electrical network 110 kV before and after the connection to the 70MW gas supply and the 58MW steam and gas supply. This grid can be powered from two 400/110kV substations, namely Sokolnice and Otrokovice. The load flow calculation is realized for the power supply either from Otrokovice or Sokolnice. Furthermore, the calculation of the uni-phase and three phase short circuits in the substations of 110kV network is realized in this thesis. The result of the thesis is the assessment of the voltage ratio in the network, current load of the power line and short circuit resistance of the substations.
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Power line transfer function generator
Šenk, Marek ; Mišurec, Jiří (referee) ; Mlýnek, Petr (advisor)
The aim of this thesis is to create a power line transfer function generator in Matlab. Work on introduction explains the concept of power line and describes the different types of topologies and types of cables that power line are the most widely used today. It is also discussed PLC technology, its structure, characteristics of the transmission channel and interferences. The following are approach the types of the modeling of power line. More details are described generally modeling in the frequency (two-port network model), which is used in the created generator. The next section provides a power line model, whose principle is used in the generator. The following is a description of created the generator and comparison with FTW PLC Simulator. In conclusion, the thesis presents the results of simulations the transfer function, which show the magnitude and phase frequency characteristics of different topologies and parameters.
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Sensor network over power line systems
Plachý, Martin ; Galetka, Josef (referee) ; Götthans, Tomáš (advisor)
This semestral thesis contains information about a construction of a senzor network over power line systems. Those are divided with the reference to bandwidth. After the general description of the network there is the whole realisation of a drive unit and a sensor unit described and the design of data and power circuits is solved separately. The description of both units programs written in the ANSI C language is presented in the next chapter. The description of the network control by PC and a quantitative evaluation of the network reliability are also included.
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Power line parameters
Kavan, Pavel ; Krajsa, Ondřej (referee) ; Mlýnek, Petr (advisor)
At the beginning is diploma thesis focused on a distribute power line parameters measurement and examination changes of this parameters depending on using of various power line cables. On the basis of measurements is made a transmission channel in Matlab & Simulink, where are executed simulations with power transmission line. The simulated power line is based on measured distribute parameters or physical proportions of cabels. By changing different parts of simulated communication channel is a symbol error rate expressed on the lenght of transmission line.
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The Continuity Indicators Calculation of E-ON ČR Distribution Network Segment
Girga, Eduard ; Černý, Pavel (referee) ; Paar, Martin (advisor)
The aim of this master’s thesis is calculation and analysis of reliability indicators of the company E.ON Česká republika, s.r.o. distribution network in the south Moravia territory (area of former Jihomoravská energetika) for the period of one year, from 1st November 2008 to 31st October 2009. We consider events incurred on overhead or underground lines of level of high voltage or directly connected with these lines. Events originated from extensive disaster interruption of electric energy supply caused by particularly unfavourable external effects are not considered, because network components can not be efficiently dimensioned on those influences. Known aspects of the events are time of origin, time duration, place and cause of failure inception. Analysis of reliability indicators is accomplished according to different point of view. The first aspect is the hours of day, during which the event lasted. The second aspect is the hours of day, during which the event incurred. The third one focuses component pointed as reliable for the origin of the event. The last standpoint is percentage load of the line outlet, on which the event occurred. We can ordain this load as the proportion of current flowing through the line outlet in the time of event inception and of the value of maximum current set up on the protection of the line outlet. Indications mentioned in the last sentence were searched in the dispatcher centre thanks to graphical interface of application RIS JME Brno. In the theoretical part of the work there is described the structure of distribution network and its fundamental influence on the continuity of electric energy supply, the ways of evaluation and increasing of electric energy supply reliability, regulation of continuity of electric energy supply with emphasis on regulation in the Czech Republic valid until 26th February 2010 and since 27th February 2010. The last theoretical part focuses on definition of failure and differentiation of failures according to various aspects.
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Design and implementation of LAN home network using PLC technology
Pataj, Jiří ; Lattenberg, Ivo (referee) ; Mišurec, Jiří (advisor)
Master’s thesis deals with possibilities of data communication on low voltage power lines, so-called PLC. This technology allows data transfer on power lines. According frequency band the PLC can be subdivide into narrowband or broadband class. Given are theoretical knowledge’s of data communication on power lines and describes technical solutions. Consequently is suggestion of LAN, which is accessible for commercial usage made by DS2 and his suitable for home use. The main acquisition is implementing and measuring this experimentally created LAN in family house. The results are real bitrates depending on distance and quality of specific connection.
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Network Voice Message Box
Dítě, Miroslav ; Sysel, Petr (referee) ; Zeman, Václav (advisor)
In this Master's thesis a power line communication is shortly described and the scheme of the communication system is realized. The communication device is called NVMB. This abbreviation means Network Voice Message Box. It should be used for transfer of the voice message via power line. It enables its recording, playback and sending. A process of the scheme design is created, functionality of the device is realized and reviewed in the main part of the Master's thesis. The other chapter of the thesis is devoted to the software communication system.
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