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Analysis and Verification of Operating Characteristics of Grid and Hybrid Inverters
Vrána, Michal ; Braciník,, Peter (referee) ; Dvorský, Emil (referee) ; Mastný, Petr (advisor)
The thesis is an annotated collection of articles focused on the field of verification of inverter operating characteristics and their impact on the operation of the distribution system. The operating characteristics are assessed with respect to the national requirements in the Czech Republic. Within the framework of the solution, articles were published in foreign impacted and peer-reviewed journals and indexed proceedings of foreign and domestic conferences. The main result of the dissertation is the design and implementation of a laboratory workplace for verification of operating characteristics. For the workstation, software equipment was designed and implemented for testing process automation of both, the physical workstation and the virtual testing. By reconfiguring the workstation, it is possible to create a facility for simulating and verifying the effect of autonomous functions on the distribution system within the framework of experimental installation in laboratory conditions or field testing.
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Control and monitoring of a distributed energy generation systems based on renewable sources with storage system
Smugala, Ondrej ; Paar, Martin (referee) ; Vrána, Michal (advisor)
The diploma thesis is dealing with possible approaches to control distributed energy resources and storage systems. One of these approaches is a virtual power plant and its concept is described in the first part of the thesis. The virtual power plant is a controlled system of distributed energy resources, storage systems and controllable loads interconnected via communication network, that can act as a conventional power plant. The theoretical part contains a survey of control system's topologies, a brief summary of available communication infrastructures and standards. The second part of the thesis is focused on the description of operation and control of hybrid system that represents an inseparable component of virtual power plant. A Matlab Simulink model was created for this purpose. A simulation of hybrid inverter's step response is realised to test the operation of the hybrid system and it is compared with the real measurements in the laboratory. A comparison of control approaches of hybrid system implemented on the basis of measurements is also included in this thesis and was published in the scientific paper attached in the appendix.
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Control and monitoring of a distributed energy generation systems based on renewable sources with storage system
Smugala, Ondrej ; Paar, Martin (referee) ; Vrána, Michal (advisor)
The diploma thesis is dealing with possible approaches to control distributed energy resources and storage systems. One of these approaches is a virtual power plant and its concept is described in the first part of the thesis. The virtual power plant is a controlled system of distributed energy resources, storage systems and controllable loads interconnected via communication network, that can act as a conventional power plant. The theoretical part contains a survey of control system's topologies, a brief summary of available communication infrastructures and standards. The second part of the thesis is focused on the description of operation and control of hybrid system that represents an inseparable component of virtual power plant. A Matlab Simulink model was created for this purpose. A simulation of hybrid inverter's step response is realised to test the operation of the hybrid system and it is compared with the real measurements in the laboratory. A comparison of control approaches of hybrid system implemented on the basis of measurements is also included in this thesis and was published in the scientific paper attached in the appendix.
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