Search for dissertations about: "HVDC control"
Showing result 1 - 5 of 52 swedish dissertations containing the words HVDC control.
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1. Performance Quantification of Interarea Oscillation Damping Using HVDC
Abstract : With the transition towards renewable energy, and the deregulation of the electricity market, generation patterns and grid topology are changing. These changes increase the need for transfer capacity. One limiting factor, which sometimes leads to underutilization of the transmission grid, is interarea oscillations. READ MORE
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2. Analysis of VSC-based HVDC systems
Abstract : The main objective of this thesis is to perform stability and control studies in the area of VSC-HVDC systems. A major part of the investigation focuses on the development of procedures, whose aim is to understand, explain and avoid poorly-damped conditions or instability that may appear due to dc-side resonances, which stem from the interaction of converters and passive elements in such systems. READ MORE
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3. Converter interactions in VSC-based HVDC systems
Abstract : The main objective of this thesis is to perform stability and control studies in the area of VSC-HVDC. A major part of the investigation focuses on the explanation of poorly-damped conditions and instability that are linked to dc-side resonances. READ MORE
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4. Modeling and Control of VSC-HVDC Links Connected to Weak AC Systems
Abstract : For high-voltage direct-current (HVDC) transmission, the strength of the ac system is important for normal operation. An ac system can be considered as weak either because its impedance is high or its inertia is low. READ MORE
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5. Control and Planning of Multi-Terminal HVDC Transmission Systems
Abstract : With recent advances in power electronic technology, high-voltage direct current (HVDC) transmission system has become an alternative for transmitting power, especially over long distances. Multi-terminal HVDC (MTDC) systems are proposed as HVDC systems with more than two terminals. READ MORE