Search for dissertations about: "förnyelsebara energikällor"

Showing result 1 - 5 of 11 swedish dissertations containing the words förnyelsebara energikällor.

  2. 1. Increasing the hosting capacity of distributed energy resources using storage and communication

    Author : Nicholas Etherden; Sami Repo; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Renewable Energy Generation; Energy Storage; Hosting Capacity; Curtailment; Demand Response; Dynamic Line Rating; Power System Communication; Smart Grid; Förnyelsebara energikällor; Energilagring; Acceptansgräns; Kommunikation i kraftsystem; Smarta elnät; Energy Engineering; Energiteknik; Electric Power Engineering; Elkraftteknik;

    Abstract : The use of electricity from Distributed Energy Resources like wind and solar powerwill impact the performance of the electricity network and this sets a limit to theamount of such renewables that can be connected. Investment in energy storage andcommunication technologies enables more renewables by operating the networkcloser to its limits. READ MORE

  4. 2. Increasing the hosting capacity of distributed energy resources using storage and communication

    Author : Nicholas Etherden; Joao A Peças Lopes; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electric Power Systems; Renewable Energy; Energy Storage; Hosting Capacity; Curtailment; Power Utility Automation; IEC 61850; Smart Grid; Elkraft; Förnyelsebara energikällor; Energilager; Acceptansgräns; Produktionsnedstyrning; Kraftsystemsautomation; IEC 61850; Smarta elnät; Electric Power Engineering; Elkraftteknik;

    Abstract : This thesis develops methods to increase the amount of renewable energy sources that can be integrated into a power grid. The assessed methods include i) dynamic real-time assessment to enable the grid to be operated closer to its design limits; ii) energy storage and iii) coordinated control of distributed production units. READ MORE

  5. 3. Regional Energy Systems with Retrofitted Combined Heat and Power (CHP) Plants

    Author : Song Han; Yan Jinyue; Thorin Eva; Deng Shiming; Mälardalens högskola; []
    Keywords : Combined heat and power; Waste-to-Energy WtE ; Regional energy system; Greenhouse gases GHG ; Retrofitting; Optimization; Kraftvärme; Avfall-till-Energi; Regionala Energisystem; Växthusgaser; Uppgradering; Optimering.; Energy- and Environmental Engineering; energi- och miljöteknik;

    Abstract : Fossil fuel depletion, economic development, urban expansion and climate change present tough challenges to municipal- and regional-scale energy systems. Regional energy system planning, including waste treatment, renewable energy supply, energy efficiency, and climate change, are considered essential to meet these challenges and move toward a sustainable society. READ MORE

  6. 4. Weekly planning of hydropower in systems with large volumes of varying power generation

    Author : Charlotta Ahlfors; Mikael Amelin; Magnus Brolin; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hydropower; literature review; weekly planning; low carbon operation; maintenance scheduling; preventive maintenance; mixed integer linear programming; dynamic programming; cascaded river systems; value of stored water; Electrical Engineering; Elektro- och systemteknik;

    Abstract : Hydropower is the world’s largest source of renewable electricity generation. Hydropower plants with reservoirs provide flexibility to the power systems. READ MORE

  7. 5. Prediction of power and energy use in dwellings : Addressing apects of thermal mass and occupant behaviour

    Author : Victor Fransson; Avdelningen för Installations- och klimatiseringslära; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Byggnadssimulering; Termisk massa; Värmetröghet; boendes beteende; hushållsel; varmvatten; building simulation; thermal mass; thermal inertia; occupant behaviour; household electricity; domestic hot water;

    Abstract : Households are responsible for approximately 26 % of the annual energy use in the EU. Following the EU-directives regarding energy performance in buildings, international initiatives have been taken in Europe to help countries to define and include guidelines in their own building codes, for example, to establish the concept of zero energy buildings, ZEBs. READ MORE