National Repository of Grey Literature 137 records found  1 - 10nextend  jump to record: Search took 0.01 seconds. 
Providing flexibility with detachable loads Procurement and commodity product prediction
Sykora, Jan ; Radil, Lukas ; Pilař, Martin
Flexibility is generally considered as the potential ofa facility (generation/consumption or storage) to actively changethe amount of its generation/consumption/accumulated energybased on price signals or direction. This control strategies ismanaged to correct deviations of the electricity grid or to ensurethat the purchase/sale of electricity is profitable for the flexibilityprovider. This paper presents a comparison of the control of heatpump consumption to provide consumption flexibility.
Basic principles of flexibility aggregation
Ošťádal, Martin ; Paar, Martin (referee) ; Radil, Lukáš (advisor)
This thesis deals with the basic principles of flexibility aggregation. In the beginning it introduces the history and present state in the field of regulation and prospects for the future. After defining the concepts associated with flexibility and aggregation, the necessary modifications for the functioning of flexibility aggregation are formulated. Next, foreign methods of energy regulation are mentioned, as well as possible obstacles to these new methods in the respective countries. The paper concludes with an analysis of data from Pecan Street Inc. to show the effect of flexibility on daily load profile and the similarity of power waveforms throughout the day for provided households.
Economic analysis of doubly fed generators in pumped storage power plants
Čech, Jindřich ; Klusáček, Jan (referee) ; Radil, Lukáš (advisor)
The objective of this bachelor’s thesis is to evaluate pros and cons of doubly fed induction generators (DFIG) used in pumped storage power plants and to evaluate financial advantages of using DFIG compared to synchronous machines.
Pilot project on flexibility management at LV level
Sýkora, Jan ; Pilař, Martin (referee) ; Radil, Lukáš (advisor)
The thesis deals with the topic of flexibility, especially on the demand side. It includes the definition of terms related to the issue, the basic principles of operation and possibilities of use. The main researched branch of the study is the usage of the flexibility potential of heat pumps. The work is based on real data from a pilot project executed in the winter of 2021/22, which examines the portfolio of households with a heat pump and observes the possibilities of using flexibility, its management and especially the impact on load change depending on the estabilished baseline.
Increasing energy efficiency in the conditions of the Czech Republic
Holas, Zdeněk ; MA, Martin Šik, (referee) ; Radil, Lukáš (advisor)
This bachelor thesis deals with energy efficiency in the circumstances of Czech Republic. Based on processing legislative documents, statistical databases concerning primary and final energy consumption, national action plans of Czech Republic and some of the member states of the European Union (France, Denmark, Finland) there were proposed ways for Czech Republic to increase its energy efficiency. Best available technologies in the field of energy efficiency were also took into account.
Electricity balance in a typologically local system of an energy community with electricity production
Kaňa, Jiří ; Radil, Lukáš (referee) ; Drápela, Jiří (advisor)
The European trend of increasing the share of renewables and decentralizing energetics is leading to an enthusiastic debate over local energy communities. Mass support for this arrangement may seem to solve many of today's energetics problems, but at the same time we need to keep in mind the problematic aspects of the energy communities themselves. In particular, there is a need to resolve the economic and legal relations of the members of the community and to ensure the technical feasibility of such a transformation. This work summarizes the existing knowledge about the idea of energy communities, presents a summary of the most important information from a technical, economic and legal point of view in the context of the European and Czech environment and draws attention to the most pressing issues. Furthermore, the creation of a model of electricity consumption, photovoltaic production and metrics for measuring electricity with respect to the actual properties of the modeled systems is presented. In the final phase, a simulation of energy flows is performed on a model of an energy community with a specific topology with evaluation of the results.
Study of alternative ending of nuclear fuel cycle in the Czech Republic
Michalica, Jaroslav ; Radil, Lukáš (referee) ; Šťastný, Ondřej (advisor)
This bachelor thesis deals with the alternative end of the nuclear fuel cycle in the Czech Republic. At the beginning of the work, the nuclear fuel cycle is explained, then the radioactive waste, how it is produced, and how we divide it. This is followed by a chapter that deals with the removal of the used nuclear fuel, from its extraction from the reactor through its temporary storage until its final disposal in an underground waste repository. The work then explains the alternative of direct disposal of used nuclear fuel, namely reprocessing of used nuclear fuel. It explains the existing methods for the reprocessing of used nuclear fuel which are currently being used, and where the used nuclear fuel reprocessing plants are located. The conclusion of the thesis deals with the economic comparison of direct final disposal of used nuclear fuel with reprocessing and final disposal of radioactive waste.
Electrical models of recuperative loads for electrical railway traction system feeder 25 kV, 50 Hz
Bureš, Jan ; Radil, Lukáš (referee) ; Klusáček, Jan (advisor)
The thesis deals with the modeling of drive vehicles from the point of power consumption and its quality that are being run in the Czech republic on the 25 kV/50 Hz current system. The locomotives being run on Czech territory are categorized according to their electric equipment and typical consumption quality, with respect to the historical evolution. The models of individual categories were created with the help of PSCAD simulation software. A system of control and power parametrization of models was also designed, based on the outer description, i. e. parameters of locomotives, line profile and the driving dynamics. Thus, the designed models are suitable for the simulation of energy flow profile in the traction system as a whole.
Simulating daily load profiles to evaluate tariff structures
Abdallah, Hadi ; Paar, Martin (referee) ; Radil, Lukáš (advisor)
Tato práce se zabývá simulací denních zátěžových profilů pro účely vyhodnocení tarifní struktury. V první části práce je uvedena rešerše ekonomického hlediska dodávky elektřiny, tedy trhy s elektřinou, návrhem tarifů a tarifními strukturami v Česku a dalších evropských zemích. Práce se také zabývá konceptem komunitních energetických systémů. Stěžejní částí této práce je vytvoření modelu pro simulaci denních zátěžových profilů a zavést to k vyhodnocení více scénářů rozúčtování. Teoretická část práce se zabývá trhem s elektřinou, procesem jeho tvorby a prvky, které dohromady tvoří tarifní strukturu. Ceny elektrické energie jsou uvedeny z historického a aktuálního hlediska pro několik evropských zemí. Poté jsou uvedeny klíčové technologické aspekty komunitních energetických systémů. V praktické části této práce je uvedena simulace určená k vygenerování denních profilů spotřeby domácností. Model, implentován v prostředí Matlabu, používá Poissonovo i Binomické rozdělení. Vychází z profilu obsazenosti (aktivity) v každé domácnosti v jednotlivých hodinách a také z náhodného spínání spotřebičů. Na základě modelu byly otestovány scénáře pro výpočet ceny elektrické energie pro jednotlivé typové případy domácností.
Impacts of EU climate and energy policy on the operation of electricity systems
Prečuch, Martin ; Kupčiha, Tomáš (referee) ; Radil, Lukáš (advisor)
The bachelor thesis is focused on the climate and energy policy of the European Union, which has an impact on the operation of energy systems. The introduction deals with the liberalization of the electricity market and specific liberalization packages. The following section essentially describes the EU's climate policy and introduces the European Green Deal. The following chapters introduce the strategies of European countries and national transmission system operators to achieve climate neutrality, and in this context, pilot projects using renewable energy sources are described.

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