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

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

142 Economic Analysescosts to the increased wind penetration is simply a consequence of the heat price alwaysresponding with increase of the marginal production costs, whenever the wind productionis pushing the corresponding electricity price.Total cost[Mill. €/yr]9008007006005004003002001000‐100‐200Comparison of annual production cost:Reference‐ and heat pump scenario2008 2017 2025 2008 2017 2025ReferencescenarioHeat pumpscenarioBottleneck income from EXPORTBottleneck income from IMPORTExportImportCentral boilerscondensing unitsExtraction unitsBackpressure unitsBoilers, decentralizedFigure 7.8, Total annual costs of the reference- and heat pump scenario subjected to the2008, 2017 and 2025 wind penetration.Annual system costs [Million €]Heat pump scenarioSYSTEM SCENARIOS:ReferenceHeat pumpCentral unitsDecentralizedunitsExchangeBottleneckincomefrom:2008 278 6 4 294 107 -10 104 -1 -18 7632017 253 2 27 277 118 -22 66 -12 -10 7002025 213 2 64 272 121 -24 48 -25 -6 6632008 260 82 0 12 2 0 173 0 -66 4642017 198 51 1 8 4 -5 143 -1 -46 3552025 164 38 4 6 6 -15 110 -7 -33 273Table 7.18, An overview of the values behind the figure above constituting the total costs inthe heat pump and reference scenario.ExtractioncondensingBoilersBackpressureBoilersExportImportexportimportTotalThe sources of the system incomeA close-up of the sources of the system income in the heat pump and reference scenarioscompared above is seen below in Figure 7.9. As mentioned, the income is based on exportas well as bottleneck income from both export and import assigned to the regional TSO.Looking at the reference scenario, the system income in 2008 is characterized by onethird coming from conventional export while the rest mostly comes from congestions onimport from the exchange area. When looking at the 2017-reference scenario, half of theincome is based on pure export while the other half is equally divided between the bottleneckincome from export and import, respectively. Although the total bottleneck incomeis relatively unchanged compared to 2008, the 2017 scenario indicates a large increasein income from congestion on export by a factor of eight. In 2025 (reference scena-

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