Modeling an Integrated Energy Transformation of the Electricity Sector: An Open-source Analysis for Germany

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Abstract

This thesis addresses research questions and implications in the context of the German and European energy transformation and is comprised of three parts:
Part I starts with a chapter providing an introduction to the topic. Chapter 2 then focuses on the topic of „sector coupling“ and the technical and economic challenges of coupling electricity, heat, and transportation, in order to further transform towards a system relying on renewables instead of fossil and fissil fuels as a primary source of energy.
Part II deals with economic dispatch modeling. In Chapter 3, a five-fold approach to open science is introduced and the advantages of open energy models are being discussed. A fully open-source bottom-up electricity sector model with high spatial resolution using the Julia programming environment is then developed describing source code and a data set for Germany. Chapter 4 examines the ongoing discussion about potential effects of introducing bidding zones in Germany. An electricity sector model with network representation is applied to analyze the system implications and the distributional effects of two bidding zones in the German electricity system. Chapter 5 investigates the impact of uncertain photovoltaic generation on unit commitment decisions. This is done for a market following the rolling planning procedure employing a large-scale stochastic electricity market model. A novel approach to simulate a time-adaptive intra-day photovoltaic forecast, solely based on an exponential smoothing of deviations between realized and forecast values, is presented.
Part III shifts the focus to issues of the decentral energy transformation. In Chapter 6, the interdependencies between transmission line infrastructure and the electricity mix are being assessed. Chapter 7 deals with local electricity markets. Implications of recently proposed market designs under the current rules in the German market are tested using a simplistic equilibrium model representing heterogeneous market participants in an energy community with their respective objectives.
The dissertation shows approaches and methodologies to overcome techno-economic challenges of the transformation towards renewable energy opening up even further research possibilities.
Original languageEnglish
Place of PublicationBerlin
PublisherTechnischen Universität Berlin
Number of pages261
DOIs
Publication statusPublished - 2020
Externally publishedYes

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