文章基本信息

标题：The role of grid extensions in a cost-efficient transformation of the European electricity system until 2050
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作者：Michaela Fürsch ; Simeon Hagspiel ; Cosima Jägemann 等
期刊名称：EWI Working Papers
印刷版ISSN：1862-3808
出版年度：2012
卷号：2012
出版社：Energiewirtschaftliches Institut an der Universität zu Köln
摘要：As an attempt to ght global warming, many countries try to reduce CO2 emissions in the power sector by signicantly increasing the proportion of renewable energies (RES-E). A highly intermeshed electricity transmission grid allows the achievement of this target cost-eciently by enabling the usage of most favorable RES-E sites and by facilitating the integration of uctuating RES-E infeed and regional electricity demands. However, construction of new lines is often proceeding very slowly in areas with a high population density. In this paper, we try to quantify the benets of optimal transmission grid extensions for Europe until 2050 compared to moderate extensions when ambitious RES-E and CO2 reduction targets are achieved. We iterate a large-scale dynamic investment and dispatch optimization model for Europe with a load- ow based transmission grid model, in order to determine the optimal deployment of electricity generation technologies and transmission grid extensions from a system integrated point of view. Main ndings of our analysis include that large transmission grid extensions are needed to achieve the European targets cost-eciently. When the electricity network is cost-optimally extended, 228,000 km are built until 2050, representing an increase of 76% compared to today. Further ndings include substantial increases of average system costs for electricity until 2050, even if RES-E are deployed eciently throughout Europe, the grid is extended optimally, and if signicant cost reductions of RES-E are assumed
关键词：Renewable energy; GHG reduction; transmission grid; power system optimization