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

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5.2 Derived storage demand Figure 5.1: Annual electricity demand 2050, Constant scenario, Figure 5.2: Annual electricity demand 2050, Growth scenario, Table 5.2: Annual storage demand 2050 – Growth scenario and Table 5.2: Annual storage demand 2050 – Growth scenario provide visualisations for the following explanations. All detailed calculations and graphs are included in the appendix. The storage demand is calculated with the use of certain equations. Annual storage is charged (QSTO-Ain) at times, when electricity supply (GWh) within the assessed month (QRES-Em) exceeds electricity demand (QDm) in that month (GWh) – see Equation (17). Contrary to that annual storage is discharged (QSTO-Aout) at times when electricity demand (QDm) in one month (GWh) is higher than electricity supply (QRES-Em) – see Equation (18). 10 % of grid losses (lg) are taken into account with the electricity demand. (16) QRES-E = QEleGeo + QElePV + QEleRun-off + QElewind + QEleStoredHP + QEleCHP (17) If QRES-Em > QDm (1+lg) à QSTO-Ain = QRES-Em – QDm (1+lg) (18) If QRES-Em < QDm (1+lg) à QSTO-Aout = QDm – QRES-Em (1+lg) Results of the above mentioned equations show, that the electricity supply from April until September is higher than the demand. Therefore, electricity can be fed into annual storage plants, to be available during the winter months. Within both scenarios most electricity can be stored in April (1.3 TWh constant/1.6 TWh Growth) and May (1.3 TWh Constant/1.7 TWh Growth), as the electricity supply is going down and electricity demand is going up the following months. From October until March the electricity production is lower than the demand. Therefore electricity has to be provided from annual storage. Both scenarios show, that demand for electricity from storage is highest in December (1.4 TWh Constant/2.0 TWh Growth) and January (1.4 TWh Constant/2.0 Growth). 45
During the course of the year, 5.3 TWh/7.2 TWh (Constant/Growth scenario) have to be stored in summer for the winter months. 46
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 and 50: (kilometers per person or per tonne
Page 51: GWh 8.000 7.000 6.000 5.000 4.000 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
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02.01.10 02.01.10 16:45-17:00h 1.86
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07.01.10 07.01.10 12:45-13:00h 2.06
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12.01.10 12.01.10 08:45-09:00h 2.23
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17.01.10 17.01.10 04:45-05:00h 1.34
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22.01.10 22.01.10 00:45-01:00h 1.63
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26.01.10 26.01.10 20:45-21:00h 2.06
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31.01.10 31.01.10 16:45-17:00h 1.69
Page 125 and 126:
Electricity Supply
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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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