Sökning: "expansion planning"
Visar resultat 21 - 25 av 90 avhandlingar innehållade orden expansion planning.
21. Optimization modeling of frequency reserves and inertia in the transition to a climate-neutral electricity system
Sammanfattning : The ongoing transition towards electricity production systems that are dominated by wind and solar power challenge both the traditional strategy for meeting a varying electricity demand and the traditional way of controlling the AC frequency of the electricity grid. This work investigates how frequency reserves (FR) and inertia, as well as inter-hourly variation management interact in the transition to a climate-neutral electricity system. LÄS MER
22. Short- and long-term variability in future electricity systems – Ensuring the flexibility to manage the grid frequency and inter-annual variations
Sammanfattning : To achieve climate mitigation targets, the net climate impact from electricity generation must be drastically reduced in the near future, and eventually eliminated. The level of generation must also be increased to accommodate the increasing demand as the transport and industry sectors undergo electrification. LÄS MER
23. Power System Operation Planning and Wind Power Curtailment : Efficient Methods for Power System Scheduling and Integration Studies of Variable Renewable Energy
Sammanfattning : To reduce carbon dioxide emissions, variable renewable energy (VRE) sources are replacing conventional fossil-based power plants for electricity generation. Due to the variability and uncertainty of weather dependent VRE sources, there can be situations when it is not possible to accommodate all the available VRE production, and VRE sources have to be curtailed. LÄS MER
24. Distribution Network Planning Considering Capacity Mechanisms and Flexibility
Sammanfattning : The increasing penetration of distributed energy resources (DERs) has posed challenges to the distribution system operator (DSO) from the operation and regulatory point of view. High penetration of DERs could have negative impacts on the performance of the distribution grid, and depending on the regulatory framework, the DSO's remuneration as well. LÄS MER
25. Rekordår och miljonprogram : flerfamiljshus i stor skala : en fallstudiebaserad undersökning av politik, planläggning och estetik
Sammanfattning : The objective of the thesis is to illuminate and further the understanding of a period of history known as the ”record years” (1960-1975), and ”the million homes program” (1965-1974). The questions discussed in the thesis include: what was the attitude of local authorities to the building of homes? How was the location of the buildings decided? Which factors influenced the character of the buildings and housing areas? This involves a study of the interplay among the various actors and a discussion of the role of the architects. LÄS MER
