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BPL modem
Chromý, David ; Mlýnek, Petr (referee) ; Musil, Petr (advisor)
This work deals with the issue of PLC with a focus on BPL technology (Broadbandover-power lines), which is explained in the theoretical part. The work describes in detailthe main components for PCB design with manufacturing and mounting process. Fur-thermore, the thesis provides instructions on how to establish communication betweenBPL modems and a description of individual functions. In conclusion, the procedureof measuring the noise intensity in the 230 V power line is described with the results.The output of the diploma thesis is the selection of components and the implementationof printed circuit boards for two BPL modems. These modems allow to measure SNR(signal to noise ratio) at physical speed.
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Demand Management in Smart Grids
Nesveda, František ; Pilát, Martin (advisor) ; Vlach, Milan (referee)
With the rapid adoption of electric vehicles and the rise of power generation from re- newable sources, intelligent management of power demand on a household level is gaining importance. Current algorithms used for that purpose have negative privacy implications and focus only on controlling the charging of electric vehicles while ignoring other ap- pliances. We describe a decentralized algorithm designed to control the power demand of different types of household appliances along with the charging of electric vehicles while preserving the privacy of the subscribers. We also present a smart grid simulator to evaluate the algorithm's effectiveness along with results of simulating a scale model of the power grid of the state of Texas. 1
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The Impact of Media on Consumer Behaviour in the Energy Sector
Sedláček, Štěpán ; Hála, Tomáš (referee) ; Langerová, Petra (referee) ; Šedrlová, Magdalena (advisor)
This bachelor thesis deals with the analysis of the aspects that prevent or allow the integration of the principles of social networks into the system of smart meters as well as the study of their potential and possibilities of implementation. The issue of how the future smart grid consumer will benefit from the future smart city grid services are hot topics. Here, a survey is presented that focuses on these aspects. An analysis of the survey results and key messages identifies view of the people on the topic and proposes directions that may be followed when designing applications and services of residential smart city consumers.
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Voltage profile regulation in LV distribution systems by means of OLTC equipped distribution transformer and series transformers based on distributed monitoring data
Hála, Tomáš ; Topolánek, David (referee) ; Drápela, Jiří (advisor)
This diploma thesis discusses two major topics. The first one is the control size of the voltage in LV networks in regard to the increase in distributed generation concered to renewable energy sources. The study contains a review focused on the current state of low voltagegrid followed by a proposal for the solution of the oncoming state. The solution is identified as a deploying OLTC distribution transformer. In the case of more complex topology is deployed a series voltage transformer. Both methods are part of the Smart Grid. The thesis also analyzes the issue of the data measurement and data transmission. The second part of the thesis consists of the description of selected control strategies and their simulations. The design of individual system elements in the PSCAD is described. From these elements, a test network was constructed and tested the individual simulation scenarios.
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Negative impact of Smart Cities on human society
Sakharova, Daryna ; Froehling, Kenneth (referee) ; Sedláček, Pavel (advisor)
Koncept Smart Cities je považován za nový způsob lidského bydlení. Hlavním úkolem této práce je určení role klíčových komponentů Smart City, za účelem zhodnocení zda Smart technology přináší pohodlí a zahrnuje oblasti, kde se lidé cítí v bezpečí. Ve své bakalářské práci představuji koncept Smart City za pomoci analýzy a zvážením různých definicí. Pro objasnění konceptu a vysvětlení jeho užití bylo nutno zahrnout i kapitolu věnující se historii tohoto termínu a fenoménu. Aby čtenář snáze pochopil problematiku konceptu Smart Cities a jejich potenciálních negativních dopadů, bylo nutno zabývat se i faktory, které ovlivňují vědecké vnímání toho výrazu. Stanovením hlavních nevýhod jejich realizace se zabývají poslední dvě kapitoly mé práce. V nich poskytuji detailní popis stávajících problémů, uvádím příklady a objasňuji důvody pro jejich výskyt.
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Autonomous energy systems
Dolinský, Filip ; Poláčik, Ján (referee) ; Pospíšil, Jiří (advisor)
Master thesis deals with usage issues of autonomous, self-sufficient and decentralized systems. In the first part convectional and experimental sources for autonomous systems are disclosed. Second chapter deals with accumulation of electrical and thermal energy and possibilities of applications. 3rd part is focused on pilot project realized for autonomous and smart systems, which were built in last years. In the 4th chapter electrical and thermal energy consumption curves are made on daily and monthly basis for 4 type objects. In the fifth part issue of autonomy is explained, and for type buildings solutions are made with additional return on investment. The last chapter is focused on calculation of thermal accumulator and briefly discloses small district heating.
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Analyses of the breaker/limiter functions for low voltage supply points
Bajánková, Denisa ; Toman, Petr (referee) ; Topolánek, David (advisor)
The diploma thesis provides an insight into the remote control and disconnection of DSO supply points phenomenon. The remote or local disconnection/connection of supply point is allowed by the breaker function. The automatic disconnection of supply point is enabled by the limiter function. Due to the anticipated implementation of smart meters in the Czech Republic in the future, this work contains the comprehensive description of breaker/limiter function with proposed possibilities of use in the Czech Republic. The thesis deals with the current breaker/limiter function use in the Czech Republic and in other countries. It introduces the smart meter installation in pilot projects to analyze the breaker/limiter function use in other countries. The thesis is focused on the technical solution of breaker/limiter. Moreover, it describes the ways of connecting the breaker, settting the limiter, connecting/disconnecting a supply point and breaker operation. Further, the thesis introduces the ways of activating the breaker by a customer and defines in which cases it is possible to limit and interrupt the electricity supply in the Czech Republic currently. The main aim of thesis is to describe the specific possibilities of breaker/limiter function use in the Czech Republic. With regard to the function use in other countries and the limiting or interrupting the electricity supply by DSO according to energy law, the possibilities of use are proposed. Each possibility of use is analyzed when implementing the breaker function or the breaker/limiter function. The benefits are defined for a DSO and for a customer. The proposed uses are evaluated in terms of applicability and valid legislation in the Czech Republic. The result of this work is the summary of information about breaker/limiter function which is one of the new features in the implementation of smart metering. The function installation and the implementation of possibilities described in the thesis depends on the DSO decision.
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Wireless M-Bus communication system
Baštán, Ondřej ; Šťastný, Ladislav (referee) ; Fiedler, Petr (advisor)
The thesis deals with the design of wireless communication system using Wireless M- Bus, which works in the 169 MHz band. This system is designed to collect data from meters that are not equipped with a radio and have pulse outputs. The thesis describes the Wireless M-Bus standard and the current components of the communication system used by ModemTec. It also describes the selection and design of a suitable hardware implementing the receiver and transmitter modules and the firmware design for these modules. The thesis deals with the parameterization of the transmitter module in order to specify the parameters of the transmitted measured quantity.
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Multi-Conductor Model of Communication over Outdoor Power Lines
Franek, Lešek ; Steinbauer, Miloslav (referee) ; Vozňák, Miroslav (referee) ; Fiedler, Petr (advisor)
PLC - power line communication is not new. It has been known for many years. But It never be used in massive scale. There were only sporadic applications, for example ripple control system HDO used in the Czechoslovakia. PLC currently experiencing a renaissance thanks to the advent of Smart Grid. PLC offering relatively low bit rates and relatively unreliable transmission, but these disadvantages compensates very low costs to build a communication infrastructure and it offers specific functionalities for Smart Grid. The question is whether the declared parameters will be met in the real world. This thesis tries to find an answer.
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Building Energy Management System Visualisation
Bača, Dalibor ; Holek, Radovan (referee) ; Fiedler, Petr (advisor)
This paper is discussing the software design and creation of Android application that is communicating with the main application for smart appliance management BEMS. Purpose of the application is to create a new event to schedule and show different statistics and predictions of the smart appliance, such as price and usage of energy. As a part of the software design, the basic user interface is drafted, as well as the solution for communication with the main BEMS application.
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