Integration of 50 % wind power in a CHP-based ... - Ea Energianalyse

ea.energianalyse.dk

Integration of 50 % wind power in a CHP-based ... - Ea Energianalyse

146 Economic AnalysesWindCoalGasHydro (import only)PRIMARY ENERGY CONSUMPTIONFossil fuelsRenewable energyLossEnergy conversionThe ‘cut’ where the share ofdifferent energy types isassessed relative to the electricityconsumptionHeatDistributionTransmissionExportDistrict heatingElectricityFINAL CONSUMPTION (main region)Figure 7.11, Illustration of the calculation method used in this project to assess theamount of renewable energy. Earlier, this relative share was measured against the primaryenergy consumption while it today is measured relative to the produced heat andelectricity (own illustration).7.5.2. Comparison of reference scenario and heat pumps scenarioFigure 7.12 and Figure 7.13 below show the relative shares of electricity and heat productionto the total consumption, calculated from the method from Figure 7.11, comparingthe reference- to the heat pump scenario. The values are rated such that the finaltotal consumption gives 100 percent, by which it is seen that the total share of powergeneration (left) is larger in the heat pump scenario, due to the 17-21 % (2008-2025) increasein absolute electricity consumption that the heat pumps create. Regarding theelectricity production of 2008, the share of wind power is approximately the same for thereference and heat pump scenario. But as a result of greater utility of the wind capacitiesin the 2017 and 2025 scenarios, the heat pumps scenario has a slightly higher shareof wind at 23.2 % and 31.3 % in 2017 and 2025, respectively, compared to the 21.6 % and27.6 % in the same years in the reference scenario – an improvement of wind utilizationof 8 % and 13 %, respectively. When including the imported hydro power as part of theRE share, we see a much better result in the heat pump scenario with a share of 36 %,43 % and 46 % of RE in 2008, 2017 and 2025, respectively, when compared to the corresponding28 %, 32 % and 35 % of the reference scenario – a general improvement of morethan 30 percent dedicated to heat pumps. If expecting an averagely lower import inWest-DK, this improvement could be less. However, since the fixed low value of hydropower is applied to both scenarios, the observed changes between the scenarios becomerelevant in relation to the real system.

More magazines by this user
Similar magazines