The relevance of energy storages for an autarky of electricity supply ...

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5.1 Annual values During the course of a year, the demand curve is generally lower in the summer months than in winter. Contrary to the daily perspective, Figure 5.1 and Figure 5.2 show, therefore, that yearly considered PV does not correspond to the electricity demand. An increased share of PV in electricity production, therefore, requires more storage during the summer months. In contrast, wind energy has to be partially stored, as the electricity supply is linked to the weather pattern. Hydropower from flowing water is commonly used for the base load, whereas storage lakes can be used for balancing the wind power. (Neupert, 2009; Edison, 2011) In the Constant scenario Hydropower and PV produce more electricity in the summer months (February until November). Geothermal energy carriers constitute only a small amount but steadily deliver the same amount of electricity during the year. Combined heat and power produces more electricity during the winter months, as in the winter season heat demand is higher. The supply of wind is higher in winter therefore the supply-curve of wind energy also shows lower values during the summer months than in winter. Electricity demand within the Growth scenario is much higher. To provide enough electricity, REN potentials in Austria have to be almost completely utilized. Furthermore, to be able to cover energy demand, it will be necessary to develop deep geothermal energy. From a today’s point of view, this strategy is questionable, as the technology is very cost intensive. (Streicher, 2010) 43
GWh 8.000 7.000 6.000 5.000 4.000 3.000 2.000 1.000 Comparison electricity demand vs. supply 2050 – constant szenario 0 January Febuary March April May June July August September October November December Run-off HP ele production Stored HP ele production PV ele production Wind ele production Geothermal ele production CHP ele production Nacioinal ele consumption 2050 Figure 5.1: Annual electricity demand 2050, Constant scenario GWh 8.000 7.000 6.000 5.000 4.000 3.000 2.000 1.000 Comparison electricity demand vs. supply 2050 – growth szenario 0 January Febuary March April May June July August September October November December Geothermal ele production Run-off HP ele production Stored HP ele production PV ele production Wind ele production CHP ele production Nacional ele consumption 2050 Figure 5.2: Annual electricity demand 2050, Growth scenario 44
Page 1 and 2: MSc Program Renewable Energy in Cen
Page 3 and 4: Abstract This Master Thesis raises
Page 5 and 6: 4.4 Pumped Hydroelectric Storage ..
Page 7 and 8: Acronyms AC _______________________
Page 9 and 10: security, optimise the grid infrast
Page 11 and 12: 1.3 Structure of work This paper is
Page 13 and 14: • This Thesis is a theoretic anal
Page 15 and 16: following procedure: Daily radiatio
Page 17 and 18: costs, and losses also cause high c
Page 19 and 20: Figure 3.2 shows that during the we
Page 21 and 22: 3.2.2 Supply Side Which storage pow
Page 23 and 24: 4.1 Storage demand Energy storage o
Page 25 and 26: 4.3 Storage Technologies Several ty
Page 27 and 28: A disadvantage of Pumped Hydroelect
Page 29 and 30: 4.4.3 Advantages/Disadvantages + Hu
Page 31 and 32: Utility Plant Power (Turbine) 14 St
Page 33 and 34: Oxygen Hydroxidions O2 OH - OH - +
Page 35 and 36: Figure 4.3: Schematic illustration
Page 37 and 38: Storage Media Volume Mass Pressure
Page 39 and 40: 4.5.3 SWOT Analysis Strengths Weakn
Page 41 and 42: Figure 4.4: Layout of Compressed Ai
Page 43 and 44: 4.6.2 Key figures Rated power Sizes
Page 45 and 46: 4.7 Energy storage of pressurized g
Page 47 and 48: 4.8 Comparison of key figures The c
Page 49: (kilometers per person or per tonne
Page 53 and 54: During the course of the year, 5.3
Page 55 and 56: Table 5.2: Annual storage demand 20
Page 57 and 58: Figure 5.3: Daily comparison of dem
Page 59 and 60: 5.4 Derived daily storage demand Th
Page 61 and 62: Table 5.3: Daily storage demand 205
Page 63 and 64: Power in Austria is two thirds. 23
Page 65 and 66: demand by 1.1 TWh from 5.3 TWh to 4
Page 67 and 68: 8 References Books/Journals Alamri,
Page 69 and 70: Articles Daneshi, H. et al.: Genera
Page 71 and 72: A.1 Data from Verbund 64
Page 73 and 74: comparison demand & supply - annual
Page 75 and 76: constant szenario month January - -
Page 77 and 78: Hour Comparison demand + supply one
Page 81 and 82: Hour Nat. ele consumption MW (thrid
Page 89 and 90: Hour July MWh daily electricity pro
Page 101 and 102:
Hour 0:00 5.724 5.360 1:00 5.361 5.
Page 103 and 104:
Growth Scenario 110 Wp_Ele/m2 13 GW
Page 105 and 106:
Electricity Demand
Page 107 and 108:
Public electricity supply on thrid
Page 109 and 110:
ÖFFENTLICHE STROMVERSORGUNG ÖSTER
Page 111 and 112:
02.01.10 02.01.10 16:45-17:00h 1.86
Page 113 and 114:
07.01.10 07.01.10 12:45-13:00h 2.06
Page 115 and 116:
12.01.10 12.01.10 08:45-09:00h 2.23
Page 117 and 118:
17.01.10 17.01.10 04:45-05:00h 1.34
Page 119 and 120:
22.01.10 22.01.10 00:45-01:00h 1.63
Page 121 and 122:
26.01.10 26.01.10 20:45-21:00h 2.06
Page 123 and 124:
31.01.10 31.01.10 16:45-17:00h 1.69
Page 125 and 126:
Electricity Supply
Page 127 and 128:
Daily electricity supply from PV (M
Page 129 and 130:
Month Wind electricity supply wind
Page 131 and 132:
Month HP storage electricity supply
Page 133:
month geothermal storage electricit
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