Search for dissertations about: "HVDC circuit breakers"
Found 4 swedish dissertations containing the words HVDC circuit breakers.
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1. Enhanced Active Resonant DC Circuit Breakers for HVDC Grids
Abstract : High-voltage DC (HVDC) grids are considered promising for the electricity grid expansion required to integrate renewable energy sources into the existing infrastructure. DC fault currents increase rapidly and lack a current zero crossing. READ MORE
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2. Modeling and Verification of Ultra-Fast Electro-Mechanical Actuators for HVDC Breakers
Abstract : The continuously increasing demand for clean renewable energy has rekindled interest in multi-terminal high voltage direct current (HVDC) grids. Although such grids have several advantages and a great potential, their materialization has been thwarted due to the absence of HVDC breakers. READ MORE
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3. Multi-terminal HVDC protections based on transient line modeling
Abstract : High voltage direct current (HVDC) is considered one of the critical technologies required for the power system to enable the transition toward renewables. With an increasing geographical density of HVDC converters, there is a potential for optimization by connecting more than two converters into a shared DC transmission system, thus forming a multi-terminal HVDC (MTDC) system. READ MORE
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4. On the Design of Ultra-fast Electro-Mechanical Actuators
Abstract : The continuously increasing demand for connecting electric grids with remote renewable energy sources such as wind power and photovoltaic cells has rekindled interest in high voltage direct current (HVDC) multi-terminal networks. Although HVDC networks have numerous benefits, their adoption relies entirely on the availability of HVDC circuit breakers which, compared to traditional alternating current circuit breakers, have to operate in a time frame of milliseconds. READ MORE