Sökning: "three-phase fault"

Visar resultat 1 - 5 av 25 uppsatser innehållade orden three-phase fault.

1. 1. Microgrid Protection Strategies for the Swedish Power System

   Master-uppsats, Lunds universitet/Institutionen för energivetenskaper

   Författare :Zalak Shah; [2023]
   Nyckelord :Microgrid; Protection; three-phase fault; earth fault; Technology and Engineering;

   Sammanfattning : This thesis mainly focuses on the protection strategies of microgrids for the Swedish power system in the medium voltage distribution system and specifically on the three-phase fault and earth faults protection strategies. For the analysis of both faults, different grid-connected, and islanding operations are simulated using DIgSILENT Power Factory. LÄS MER

3. 2. Development of an experimental six-phase induction machine drive

   Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Författare :Adam Bianchi; [2021]
   Nyckelord :Asymmetrical six-phase induction machine; indirect rotor field oriented control; machine rewinding; multiphase electrical machines; PCB design; speed control; the star of the slot .; Asymmetrisk sexfasig asynkronmaskin; flerfasiga elektriska maskiner; hastighetsreglering; indirekt rotorfälts orienterad reglering; kretskorts design; maskinomlindning; the star of the slot .;

   Sammanfattning : Electrical machines with more than three phases are usually called multiphase electrical machines and they can have several advantages compared to conventional three-phase electrical machines such as a lower content of space-harmonics, lower torque ripple and better fault tolerance. This degree project involves rewinding of a three-phase induction machine into an asymmetrical six-phase machine. LÄS MER

4. 3. Towards a Data-Driven Approach to Ground-Fault Location in Distribution Power System using Artificial Neural Network

   Master-uppsats, Linnéuniversitetet/Institutionen för fysik och elektroteknik (IFE)

   Författare :Antoine Dupuis; [2021]
   Nyckelord :Ground-Fault Location; Distribution power System; Artificial Neural Network; Machine Learning; Distributed Generation; Wavelet Transform;

   Sammanfattning : Motivated by the need for less polluting energy production, the recent increase in renewable electricity production is reshaping classical power systems. Initially unidirectional and constant power flow becomes multi-directional and dynamic. As one of the many consequences, classical power system fault location methods might become outdated. LÄS MER

5. 4. Evaluation of Symmetrical Components Theory in Power Systems with Renewable Sources

   Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Författare :Daniil Danylov; [2021]
   Nyckelord :Symmetrical components theory; fault analysis; renewable sources; power electronics; PSCAD EMTDC; two bus system; inverter-based resources; line protection; nonlinear source.; Teori om symmetriska komponenter; felanalys; förnybara källor; kraftelektronik; PSCAD EMTDC; tvåbussystem; inverterbaserade resurser; linjeskydd; icke- linjär källa.;

   Sammanfattning : Rapidly growing Inverter- Based Resources (IBR) have different fault properties compared to Synchronous Generators (SG). Therefore, it is necessary to study the fault behavior of systems that contain different types of IBR and compare it to the conventional system responses in order to understand what steps should be taken to adapt conventional protection settings for new types of sources. LÄS MER

7. 5. Excitation system – simulation, tuning and evaluation

   Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Elektricitetslära

   Författare :Philip von Heideken; [2021]
   Nyckelord :;

   Sammanfattning : Swedish Electrical and Power Control AB (Svea Power) offers excitation systems for electrical production plants. An excitation system controls the electrical performance of the generator’s three phase outputs and must meet requirements set out in the business agency “Svenska Kraftnäts (SvK:s) föreskrifter, SvKFS 2005:2”. LÄS MER