Search for dissertations about: "power 2017"

Showing result 6 - 10 of 361 swedish dissertations containing the words power 2017.

2. 6. Frequency response by wind farms in power systems with high wind power penetration

   Author : Mattias Persson; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; inertia estimation; frequency control; power system stability; wind power integration; Power system; synthetic inertia;

   Abstract : The integration of variable speed wind turbines (VSWT) in power systems is increasing in order to reduce the emission of green house gases. This increase of power electronic converter interfaced generation causes a decrease of power system inertia, increasing the risk of load shedding and system frequency instability. READ MORE

4. 7. Variability and variation management in a renewable electricity system -large-scale wind- and solar power deployment in Europe

   Author : Lina Reichenberg; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; marginal cost of electricity; VRE; variability smoothing; solar power; power systems; renewable energy; wind power; energy systems modelling;

   Abstract : The large-scale deployment of wind and solar power poses challenges to the electricity system by introducing variability on the generation side. To handle these variations, variation management strategies can be employed to ensure that generation meets demand. READ MORE

5. 8. Locating Wind Power Policy : The Mechanics of Policy Subsystem Interactions

   Author : David Newell; Simon Matti; Sverker Jagers; Charlotta Charlotta; Erik Hysing; Luleå tekniska universitet; []
   Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; policy analysis; policy implementation; advocacy coalition framework; network management; wind power; renewable energy; Political Science; Statsvetenskap;

   Abstract : This dissertation investigates the drivers behind political decision-making and the policy outcomes resulting from political decisions. It is proposed that in policy processes where political decisions are made at multiple levels or across multiple policy subsystems, policy outcomes can be understood in terms of the mechanisms (i.e. READ MORE

6. 9. Distributed Control of HVDC Transmission Grids

   Author : Davood Babazadeh; Lars Nordström; Oriol Gomis; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; co-simulation; cyber-physical system; DC slack bus; distributed control; HVDC grids; power injection; topology processor; wind farms; Electrical Engineering; Elektro- och systemteknik;

   Abstract : Recent issues such as priority access of renewable resources recommended by European energy directives and increase the electricity trading among countries lead to new requirements on the operation and expansion of transmission grids. Since AC grid expansions are limited by legislative issues and long distance transmission capacity, there is a considerable attention drawn to application of HVDC transmission grids on top of, or in complement to, existing AC power systems. READ MORE

7. 10. Bandwidth Limited Distributed Optimization with Applications to Networked Cyberphysical Systems

   Author : Sindri Magnússon; Carlo Fischione; Steven Low; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Distributed Optimization; Resource Allocation; Power Networks; Limited Communication; Networks; Cyberphysical Systems; Wireless Sensor Networks; Internet of Things; Electrical Engineering; Elektro- och systemteknik;

   Abstract : The emerging technology of Cyberphysical systems consists of networked computing, sensing, and actuator devices used to monitor, connect, and control physical phenomena. In order to economically and sustainably operate Cyberphysical systems, their devices need to cooperate over a communication network to solve optimization problems. READ MORE