Influence of renewable energy sources on transmission networks in Central Europe
|Author:||Bc. Jan Málek|
|Year:||2016 - summer|
|Leaders:|| prof. Ing. Karel Janda M.A., Dr., Ph.D.
|Work type:|| Bachelors
|Awards and prizes:|
|Abstract:||This thesis focuses on the influence of renewable energy sources on the transmission networks in
Central Europe. Firstly, it gives an overview of the power and transmission systems of Central
European states. Based on the analysis, three key causes of congestion and instability of the grid are
identified. These include (i) insufficient transmission capacity between northern and southern
Germany, (ii) Energiewende policy and (iii) existence of German-Austrian bidding zone. To assess the
exact impact on the transmission grid, ELMOD model is employed. Two development scenarios for
the year 2025 are evaluated on the basis of four representative weeks of the year 2015. The first
scenario focuses on the effect of Energiewende on the transmission networks, the second one drops
out nuclear phase-out and thus assesses isolated effect of increased solar and wind feed-in. The
results indicate that higher feed-in of solar and wind power increases the exchange balance and total
transport of electricity between TSO areas as well as the average load of lines and volatility of flows.
Solar power is identified as a key contributor to the volatility increase, wind power is identified as a
key loop-flow contributor. Eventually, it is concluded that German nuclear phase-out does not
significantly exacerbate mentioned problems.