Rymd-, geo- och miljövetenskap (SEE) // Space, Earth and Environment (SEE)

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https://odr.chalmers.se/handle/20.500.12380/20

Vi utgår från observationer av universum och vår planet för att utveckla modeller och verktyg som möter globala utmaningar kring resurser, energiförsörjning och klimatpåverkan.
Vart är vi på väg? Var kommer vi ifrån? På vår institution söker vi svaren på de riktigt stora frågorna. I ett långt tidsperspektiv ger stjärnor och galaxers livscykler en inblick i universums, jordens och livets uppkomst – och framtid. Vi observerar också vår planet och samspelet mellan samhälle, teknik och natur för att kunna utveckla teknik, modeller och verktyg som kan möta globala utmaningar inom naturresurser, klimatpåverkan och energiförsörjning.

Läs mer om våra utbildningar

För forskning och forskningspublikationer, se https://research.chalmers.se/organisation/rymd-geo-och-miljoevetenskap/

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Observes the universe and our planet, to develop models and tools that meet global challenges regarding resources, energy supply and climate impact.
Where do we come from and where are we going? At our department we search for answers to the really big questions. In a long time perspective, the lifecycles of stars and galaxies provide an insight into the origin and future of the universe, earth and life. We also observe our planet and the interaction between society, technology and nature in order to develop technologies, models and tools that can meet global challenges regarding natural resources, climate impact and energy supply.

Studying at the Department of Space, Earth and Environment at Chalmers

For research and research output, please visit https://research.chalmers.se/en/organization/space-earth-and-environment/

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Browsar Rymd-, geo- och miljövetenskap (SEE) // Space, Earth and Environment (SEE) efter Författare "Abdulahovic, Tarik"

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    Modeling and Comparison of Synchronous Condenser and SVC
    (2006) Abdulahovic, Tarik; Teleke, Sercan; Chalmers tekniska högskola / Institutionen för energi och miljö; Chalmers University of Technology / Department of Energy and Environment
    In this thesis, a synchronous condenser is modeled in PSCAD/EMTDC and compared with the PSCAD built-in model. After the model verification, a comparison between a conventional synchronous condenser and a superconducting synchronous condenser is made by simulating different cases in a grid setup. Finally, comparison between a conventional synchronous condenser, a superconducting synchronous condenser and an SVC is made in a grid setup by simulating different factors that affect the performance of reactive power compensation units. The simulations have shown that the difference in the results between the implemented synchronous condenser model and the PSCAD built- in model was less than 5~\%. Moreover, by increasing the order of the solver, more accurate results were obtained. Also, during the faults, injection of more reactive power by the superconducting synchronous condenser than the conventional synchronous condenser due to its low synchronous reactance was observed. As the SVC injects reactive power proportional to the square of its terminal voltage, during faults that cause less voltage drop on its terminals, such as the case observed in single phase to ground faults, it showed a better performance, whereas, during severe faults, such as two phase to ground and three phase to ground faults, synchronous condensers brought the load voltage to the nominal value quicker.