A-5 技術協議録 (Field Report)

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A-6 電力潮流解析

電力潮流解析 1

I. 電力系統モデルの主要入力データ 2

表 1 発電機 インピーダンス 定格 通常運用 (%: MVA ベース ) 発電機 場所 メーカー 運開年 燃料 PF (MW) (KV) (MVA) (%) (MW) (h) 需要対応 Xd Xd G21 Boulaos G.M.T FINCANTIERI B550/18 1984 15.2 5.5 19.00 80 10.0 115025 休止 1) 25.0 1) 99 重油 燃料消費率 2) (g/kwh) G22B Boulaos Wartsila GMT 18V46 2007 17.0 15.0 21.35 80 14.0 21108 ベース 22.2 205 重油 G25 Boulaos Wartsila 18V46 2000 14.4 5.5 18.00 80 13.4 59551 ベース 19.6 175 重油 G1 Boulaos Alstom Pielstick 18PC2-2 1976 6.0 5.5 7.60 80 4.0 124435 ピーク 1) 25.0 1) 99 重油 G12 Boulaos Caterpilar 2004 7.25 5.5 9.06 80 6.5 38296 ベース 10.5 140 重油 G13 Boulaos Wartsila GMT 16VA32 2001 6.0 5.5 7.50 80 4.5 43535 ベース 22.3 206 重油 G14 Boulaos Wartsila GMT 16VA32 2001 6.0 5.5 7.50 80 4.5 25957 ベース 22.3 206 重油 221 G15 Boulaos Wartsila GMT 16VA32 2001 6.0 5.5 7.50 80 4.5 24387 ベース 22.3 206 重油 G16 Boulaos Wartsila GMT 16VA32 2001 6.0 5.5 7.50 80 4.5 33559 ベース 22.3 206 重油 G17 Boulaos Caterpilar 2003 7.25 5.5 9.06 80 6.5 35041 休止 10.5 140 重油 G18 Boulaos Caterpilar 2004 7.25 5.5 9.06 80 6.5 33405 ベース 10.5 140 重油 G23B Boulaos MAN 9L52/55A 2011 8.5 5.5 10.64 80 6.5 4474 ベース 23.9 214 重油 G24 Boulaos MAN 9L52/55A 1988 5.5 10.5 6.88 80 4.5 106745 ベース 1) 25.0 1) 99 重油 G32 Boulaos SEMT PIELSTICK PA6 2010 4.5 10.5 5.50 80 4.0 2593 ピーク 1) 25.0 1) 99 軽油 G31 Boulaos SEMT PIELSTICK PA6 2010 4.5 10.5 5.50 80 4.0 1443 ピーク 1) 25.0 1) 99 軽油 M6 Marabout Wartsila GMT 16V25 1999 3.0 15.0 3.75 80 2.4 23305 ピーク 15.2 147 軽油 M4 Marabout Wartsila GMT 16V25 1999 3.0 15.0 3.75 80 2.4 26872 ピーク 15.2 147 軽油 M2 Marabout Wartsila GMT 16V25 1999 3.0 15.0 3.75 80 2.4 33593 ピーク 15.2 147 軽油 254 M5 Marabout Wartsila GMT 16V25 1999 3.0 15.0 3.75 80 2.4 30812 ピーク 15.2 147 軽油 M3 Marabout Wartsila GMT 16V25 1999 3.0 15.0 3.75 80 2.4 30085 ピーク 15.2 147 軽油 M1 Marabout Wartsila GMT 16V25 1999 3.0 15.0 3.75 80 2.4 24079 ピーク 15.2 147 軽油 注 : 1) 想定値, 2) 2012 年の実績値 3

表 2 変圧器 定格値 場所負荷時タップ切替装置 (LTC) 電圧電力インピーダンス 変圧器 メーカー (kv) (MVA) (%:MVA ベース ) Min. Max. Step From To タップ数 1 次 2 次 定格 (%) (%) (%) No1 PK/H Jaban As Jaban As_230kV Jaban As_63kV GETRA 230 63 63 13.56-10 10 1.25 17 NO2 PK/H Jaban As Jaban As_230kV Jaban As_63kV GETRA 230 63 63 13.46-10 10 1.25 17 No1 PK/L Jaban As Jaban As_230kV Jaban As_40kV GETRA 63 20 40 11.96-12.5 12.5 1.25 21 No1 A/L Ali Sabieh Ali Sadieh_63kV Ali Sadieh_20kV GETRA 63 20 12 9.91-12.5 12.5 1.25 21 No1 B/L Boulaos Boulaos_63kV Boulaos_20kV CEM 63 21 36 17.1-12 12 1.500 17 No2 B/L Boulaos Boulaos_63kV Boulaos_20kV CEM 63 21 36 17-12 12 1.500 17 No1 M/L Marabout Marabout_63kV Marabout_20kV CEM 63 21 36 17-12 12 1.500 17 No1 M/G Marabout Marabout_20kV Marabout_15kV AREVA 21 15 12 7.97-5 5 2.500 5 No2 M/G Marabout Marabout_20kV Marabout_15kV AREVA 21 15 12 9.85-5 5 2.500 5 T21 Boulaos Boulaos_63kV G21 CEM 66 5.5 19 8.21-7.5 7.5 3.75 5 T22B Boulaos Boulaos_63kV G22B AREVA 66 15 18 10.05-7.5 7.5 3.75 5 T25 Boulaos Boulaos_63kV G25 IEC 66 5.5 18 11.48-7.5 7.5 3.75 5 T32 Boulaos Boulaos_20kV G32 AREVA 21 10.5 6.7 6.07-7.5 7.5 3.75 5 T31 Boulaos Boulaos_20kV G31 AREVA 21 10.5 6.7 6.7-7.5 7.5 3.75 5 T11 Boulaos Boulaos_20kV G11 Metz 21 5.5 7.7 9.1 1) -7.5 7.5 3.75 5 T12 Boulaos Boulaos_20kV G12 ALSTOM 21 5.5 9.1 8.21-5 5 2.5 5 T13 Boulaos Boulaos_20kV G13 Usine de METZ 21 5.5 7.55 9.42-5 5 5 3 T14 Boulaos Boulaos_20kV G14 Usine de METZ 21 5.5 7.55 2) 9.42-5 5 5 3 T15 Boulaos Boulaos_20kV G15 Usine de METZ 21 5.5 7.55 9.42 2) -5 5 5 3 T16 Boulaos Boulaos_20kV G16 Usine de METZ 21 5.5 7.55 9.42 2) -5 5 5 3 T17 Boulaos Boulaos_20kV G17 ALSTOM 21 5.5 9.1 8.12-5 5 2.5 5 T18 Boulaos Boulaos_20kV G18 ALSTOM 21 5.5 9.1 8.21-5 5 2.5 5 T23B Boulaos Boulaos_20kV G23B AREVA 21 5.5 11 8.19-5 5 2.5 5 T24 Boulaos Boulaos_20kV G24 ALSTOM 21 10.5 6.7 8.36-7.5 7.5 3.75 5 注 : 1) PB POWERの検討値, 2) 想定値 4

II. ロードフロー図 5

表 1 電力潮流解析シナリオ一覧 (1/2) ケース Base Case1 Case2 Case3 Case4 Case5 Case6 Case7 Case8 Case9 Case10 Case11 Case12 Case13 Case14 Case15 Case16 西暦 2012 2016 2017 2018 2019 2020 2021 2022 2023 2024 運用年数 -4-1 1 2 3 4 5 6 7 8 イベント ( : 運用 ) 電力需要 最大需要 最低需要 プロジェクト No3 230/63kV 変圧器 ( ジャバナス ) 63kV 送電線 ( ジャバナス-ブラウス間 ) 他ドナーによるプロジェクト Semera 国際連系線 パルムレ変電所化 ジャバナス発電所 ジ 国マスタープラン No2 63/20kV 変圧器 ( ジャバナス ) No2 and No3 63/20kV Tr ( マラブ ) No3 63/20kV 変圧器 ( ブラウス ) キャパシタ ( ジャバナス ブラウス マラブ ) 提言事項 No.4 230/63kV Trの検討 ( ジャバナス ) 電力需要 ( 変電所別 ) 力率 輸入 発電電力 マラブ ブラウス ジャバナス ナガド パルムレ アリザビエ 合計 輸入 国内 合計送電損失損失 ( ジャバナス-20kV Bus 間 ) 0.94 0.9 0.9 0.9 0.9 0.9 0.9 0.9 0.9 0.9 0.9 0.9 0.9 0.9 0.9 0.9 0.9 MW 27.0 23.9 24.4 24.4 7.1 24.9 25.5 25.5 26.2 7.7 26.9 26.9 26.9 7.9 27.7 29.1 30.7 MVar 9.8 11.6 11.8 11.8 3.5 12.0 12.4 12.4 12.7 3.7 13.0 13.0 13.0 3.8 13.4 14.1 14.9 MVA 28.7 26.6 27.1 27.1 7.9 27.6 28.3 28.3 29.1 8.5 29.9 29.9 29.9 8.7 30.8 32.3 34.1 MW 45.5 51.3 58.6 47.6 13.9 62.1 65.7 50.1 51.1 14.9 52.3 52.3 52.3 15.3 53.5 54.7 56.1 MVar 16.5 24.8 28.4 23.1 6.7 30.1 31.8 24.3 24.7 7.2 25.3 25.3 25.3 7.4 25.9 26.5 27.2 MVA 48.4 57.0 65.1 52.9 15.4 69.0 73.0 55.7 56.8 16.6 58.1 58.1 58.1 17.0 59.4 60.8 62.3 MW 2.5 27.3 28.6 28.6 8.4 30.0 31.4 31.4 32.8 9.6 37.7 37.7 37.7 11.0 43.2 48.8 51.6 MVar 0.9 13.2 13.9 13.9 4.0 14.5 15.2 15.2 15.9 4.6 18.3 18.3 18.3 5.3 20.9 23.6 25.0 MVA 2.7 30.3 31.8 31.8 9.3 33.3 34.9 34.9 36.4 10.6 41.9 41.9 41.9 12.2 48.0 54.2 57.3 MW 0.0 0.0 0.0 11.0 3.2 0.0 0.0 15.6 17.9 5.2 20.2 20.2 20.2 5.9 22.5 22.5 22.5 MVar 0.0 0.0 0.0 5.3 1.6 0.0 0.0 7.6 8.7 2.5 9.8 9.8 9.8 2.9 10.9 10.9 10.9 MVA 0.0 0.0 0.0 12.2 3.6 0.0 0.0 17.3 19.9 5.8 22.4 22.4 22.4 6.6 25.0 25.0 25.0 MW 0.0 15.1 15.4 15.4 4.5 15.8 16.1 16.1 16.6 4.8 17.0 17.0 17.0 5.0 17.5 18.0 18.5 MVar 0.0 7.3 7.5 7.5 2.2 7.7 7.8 7.8 8.0 2.3 8.2 8.2 8.2 2.4 8.5 8.7 9.0 MVA 0.0 16.8 17.1 17.1 5.0 17.6 17.9 17.9 18.4 5.4 18.9 18.9 18.9 5.5 19.4 20.0 20.6 MW 1.9 4.7 4.7 4.7 1.4 4.7 4.7 4.7 4.8 1.4 4.8 4.8 4.8 1.4 4.8 4.9 4.9 MVar 0.7 2.3 2.3 2.3 0.7 2.3 2.3 2.3 2.3 0.7 2.3 2.3 2.3 0.7 2.3 2.4 2.4 MVA 2.0 5.2 5.2 5.2 1.5 5.2 5.3 5.3 5.3 1.5 5.3 5.3 5.3 1.5 5.4 5.4 5.4 MW 76.9 122.3 131.7 131.7 38.5 137.5 143.4 143.4 149.4 43.6 158.9 158.9 158.9 46.4 169.2 178.0 184.3 MVar 27.2 57.0 61.5 61.5 18.0 64.3 67.2 67.2 70.0 20.4 74.6 74.6 74.6 21.8 79.6 83.8 86.9 MVA 81.8 135.9 146.3 146.3 42.7 152.7 159.4 159.4 166.0 48.5 176.5 176.5 176.5 51.5 188.0 197.8 204.8 MW 57.7 91.7 98.8 98.8 28.8 103.1 107.6 107.6 112.0 32.7 119.2 119.2 119.2 34.8 126.9 133.5 138.2 % 79 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 MW 15.0 30.6 32.9 32.9 9.6 34.4 35.9 35.9 37.3 10.9 39.7 39.7 39.7 11.6 42.3 44.5 46.1 % 21 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 MW 72.7 122.3 131.7 131.7 38.4 137.5 143.5 143.5 149.3 43.6 158.9 158.9 158.9 46.4 169.2 178.0 184.3 MW 1.12 2.62 3.05 1.83 0.18 3.38 3.73 2.13 2.33 0.21 2.56 2.48 2.39 0.22 2.61 2.83 3.01 % 1.54 2.14 2.32 1.39 0.47 2.46 2.60 1.48 1.56 0.48 1.61 1.56 1.50 0.47 1.54 1.59 1.63 6

表 1 電力潮流解析シナリオ一覧 (2/2) ケース Case17 Case18 Case19 Case20 Case21 Case22 Case23 Case24 Case25 Case26 Case27 Case28 Case29 Case30 Case31 Case32 西暦 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 運用年数 9 10 11 12 13 14 15 15 16 17 18 19 イベント ( : 運用 ) 電力需要 最大需要 最低需要 プロジェクト No3 230/63kV 変圧器 ( ジャバナス ) 63kV 送電線 ( ジャバナス-ブラウス間 ) 他ドナーによるプロジェクト Semera 国際連系線 パルムレ変電所化 ジャバナス発電所 ジ 国マスタープラン No2 63/20kV 変圧器 ( ジャバナス ) No2 and No3 63/20kV Tr ( マラブ ) No3 63/20kV 変圧器 ( ブラウス ) キャパシタ ( ジャバナス ブラウス マラブ ) 提言事項 No.4 230/63kV Trの検討 ( ジャバナス ) 電力需要 ( 変電所別 ) 力率 0.9 0.9 0.9 0.9 0.9 0.9 0.9 0.9 0.9 0.9 0.9 0.9 0.9 0.9 0.9 0.9 MW 32.1 32.1 9.4 33.7 35.4 36.4 37.5 38.6 39.8 39.8 41.0 41.0 42.3 42.3 43.7 45.2 マラブ MVar 15.5 15.5 4.5 16.3 17.1 17.6 18.2 18.7 19.3 19.3 19.9 19.9 20.5 20.5 21.2 21.9 MVA 35.7 35.7 10.4 37.4 39.3 40.4 41.7 42.9 44.2 44.2 45.6 45.6 47.0 47.0 48.6 50.2 MW 57.2 57.2 16.7 58.7 60.3 61.9 63.6 65.4 67.3 67.3 69.2 69.2 71.3 71.3 73.5 75.8 ブラウス MVar 27.7 27.7 8.1 28.4 29.2 30.0 30.8 31.7 32.6 32.6 33.5 33.5 34.5 34.5 35.6 36.7 MVA 63.6 63.6 18.6 65.2 67.0 68.8 70.7 72.7 74.8 74.8 76.9 76.9 79.2 79.2 81.7 84.2 MW 54.3 54.3 15.9 55.7 57.2 58.7 60.2 61.7 61.8 61.8 62.0 62.0 62.1 62.1 62.3 62.5 ジャバナス MVar 26.3 26.3 7.7 27.0 27.7 28.4 29.2 29.9 29.9 29.9 30.0 30.0 30.1 30.1 30.2 30.3 MVA 60.3 60.3 17.6 61.9 63.6 65.2 66.9 68.6 68.7 68.7 68.9 68.9 69.0 69.0 69.2 69.5 MW 22.5 22.5 6.6 22.5 22.5 22.5 22.5 22.5 22.5 22.5 22.5 22.5 22.5 22.5 22.5 22.5 ナガド MVar 10.9 10.9 3.2 10.9 10.9 10.9 10.9 10.9 10.9 10.9 10.9 10.9 10.9 10.9 10.9 10.9 MVA 25.0 25.0 7.3 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 MW 19.0 19.0 5.6 19.6 20.2 20.8 21.5 22.2 23.0 23.0 23.8 23.8 24.6 24.6 25.5 26.4 パルムレ MVar 9.2 9.2 2.7 9.5 9.8 10.1 10.4 10.8 11.1 11.1 11.5 11.5 11.9 11.9 12.4 12.8 MVA 21.2 21.2 6.2 21.8 22.4 23.1 23.9 24.7 25.6 25.6 26.4 26.4 27.3 27.3 28.3 29.3 MW 4.9 4.9 1.4 5.0 5.0 5.1 5.1 5.2 5.2 5.2 5.3 5.3 5.4 5.4 5.4 5.5 アリザビエ MVar 2.4 2.4 0.7 2.4 2.4 2.5 2.5 2.5 2.5 2.5 2.6 2.6 2.6 2.6 2.6 2.7 MVA 5.4 5.4 1.6 5.6 5.6 5.7 5.7 5.8 5.8 5.8 5.9 5.9 6.0 6.0 6.0 6.1 MW 190.0 190.0 55.5 195.2 200.6 205.4 210.4 215.6 219.6 219.6 223.8 223.8 228.2 228.2 232.9 237.9 合計 MVar 89.7 89.7 26.2 92.1 94.7 97.0 99.4 101.9 103.8 103.8 105.8 105.8 107.9 107.9 110.2 112.6 MVA 211.2 211.2 61.7 216.9 222.9 228.2 233.8 239.6 244.0 244.0 248.7 248.7 253.6 253.6 258.8 264.3 輸入 発電電力 輸入国内 MW MW 142.5 47.5 142.5 47.5 41.6 13.9 146.4 48.8 150.5 50.2 154.1 51.4 157.8 52.6 161.7 53.9 164.7 54.9 164.7 54.9 167.9 56.0 167.9 56.0 171.2 57.1 171.2 57.1 174.7 58.2 178.4 59.5 % % 75 25 75 25 75 25 75 25 75 25 75 25 75 25 75 25 75 25 75 25 75 25 75 25 75 25 75 25 75 25 75 25 合計 MW 190.0 190.0 55.5 195.2 200.7 205.5 210.4 215.6 219.6 219.6 223.9 223.9 228.3 228.3 232.9 237.9 送電損失 損失 ( ジャバナス -20kV Bus 間 ) MW 3.26 3.06 0.24 3.32 3.23 3.37 3.66 3.83 4.07 3.86 4.11 3.95 4.11 3.86 4.04 4.30 % 1.72 1.61 0.43 1.70 1.61 1.64 1.74 1.78 1.85 1.76 1.84 1.76 1.80 1.69 1.73 1.81 7

TL1(Ash) 72km TL2(Ash) 72km TL6(Aster366) TL5(Aster366) Cable(1x800mm2) 3.8km Cable(1x400mm2) 4.8km SR7 TL(Ash) 281km Ethiopia2 SR12 SR8 Semera TL(Ash)281km SR11 SR4 Ethiopia1 TL(Ash) 283km 6 23.7 Mvar Dire Dawa Jaban As S/S L 2000 A SR5 SR1 TL(Ash) 120km TL(Ash) 163km 6 6 23.7 Mvar Adigala 23.5 Mvar Jaban As S/S H 2000 A 31.5 ka SR3 SR2 31. 31.4 MW 11.8 Mvar 11.7 Mvar 63.107 kv 1 MW 1 MW 2.5 MW -0.5 Mvar -0.5 Mvar 0.9 Mvar Jaban As Load 2.5 MW 0.9 Mvar 19.976 kv No4 J/H No3 J/H No2 J/H 230/ 230/ 230/ 31. 9.5 Mvar No2 J/G No1 J/G No1 J/L No2 J/L Jaban As PS 15 kv 2.5 MW 0.9 Mvar G1 G2 G3 G4 G5 G6 G7 No1 J/H 230/ 31. 9.4 Mvar 212.3 kv New Nagad S/S1 New Nagad S/S2 JabanAs Load 2.66 MVA 20.355 kv Palmeraie Load 0 MVA Marabout S/S L 20 kv 2 9.8 Mvar M6 TL3(Aster366) 8.2km M4 M2 M5 TL4(Aster366) 8.2km CAP9 Palmeraie Connection P2 29.5 MW 9.8 Mvar 61.872 kv 1.6 Mvar 62.194 kv 1.6 Mvar Marabout Load No2 M/G No1 M/G 28.724 MVA CAP2 CAP1 21/15 kv 21/15 kv No3 M/L 28. 29. 8.4 Mvar 10.4 Mvar CAP8 Boulaos S/S H 2000 29. A 12.6 Mvar M3 M1 Marabout S/S H 2000 A 61.897 kv 28. Palmeraie Connection P1 7.8 Mvar 62.303 kv 29.5 MW 28. 9.8 Mvar 7.8 Mvar No1 P/L Cable(1X800mm2) 5km Palmeraie S/S L 20. 20.4 MW 9.5 Mvar 9.5 Mvar 2 6.6 Mvar No2 M/L No1 M/L 27.1 MW 10.5 Mvar 1.4 MW 1.1 Mvar 28.4 MW 11.5 Mvar 1.4 MW 2.3 Mvar 1 4.1 Mvar 1 MW 0.4 Mvar Ali Sabieh S/S H 1 MW 2000 A 0.4 Mvar 62.89 kv Nagad Load 0 MVA Cable(1X800mm2) No1 B/L No2 B/L No3 B/L T21 19 MVA T22B 66/15 kv T25 Train Load 6.668 MVA Ali Sabieh S/S L 1.9 MW 0.7 Mvar No1 A/L 1.9 MW 0.7 Mvar 1.9 MW 0.7 Mvar 20.078 kv Boulaos S/S L 20.382 kv T32 T31 T11 7.7 MVA T12 T13 T14 20.2 MW 20. 7.1 Mvar 7.2 Mvar T15 T16 T17 T18 1 4.8 Mvar 15.2 MW 1 14.4 MW G21 G22B G25 5 MW 45.5 MW 2.2 Mvar 1 T23B 11 MVA T24 Ali Sabieh Load 2.021 MVA G32 G31 G 1 G12 G13 G14 G15 G16 G17 G18 5 MW 2.4 Mvar 8.5 MW G23B 5.5 MW G24 Boulaos Load 48.399 MVA 図 1 ロードフロー図 2012 年 (Base) 8

TL1(Ash) 72km TL2(Ash) 72km TL6(Aster366) TL5(Aster366) Cable(1x800mm2) 3.8km Cable(1x400mm2) 4.8km SR7 TL(Ash) 281km Ethiopia2 SR12 SR8 Semera TL(Ash)281km SR11 SR4 Ethiopia1 TL(Ash) 283km 48.5 MW 4 9.4 Mvar 15.7 Mvar SR5 SR1 97. 19.9 Mvar TL(Ash) 120km TL(Ash) 163km Dire Dawa Jaban As S/S L 2000 A 2.4 MW 0.5 Mvar 48. 47. 10.5 Mvar SR3 Adigala SR2 17 Mvar 62.295 kv Jaban As Load 27. 13.2 Mvar 19.925 kv No4 J/H 230/ No3 J/H 230/ 2.4 MW 27.4 MW 0.5 Mvar 16 Mvar No2 J/G No1 J/G No1 J/L No2 J/L 15. 15. 17 Mvar 17 Mvar 6. 6.8 Mvar 6.8 Mvar 6.8 Mvar 6.8 Mvar 6.6 Mvar 47. 16.4 Mvar No2 J/H 230/ 47.2 MW 11.3 Mvar 14.279 kv Jaban As PS 15 kv 27. 13.2 Mvar G1 G2 G3 G4 G5 G6 G7 Jaban As S/S H 2000 A 31.5 ka 4 1 220 kv No1 J/H 230/ 46.9 MW 11.2 Mvar JabanAs Load New Nagad S/S1 New Nagad S/S2 30.324 MVA 19.9 Palmeraie S/S L 15.1 MW 7.3 Mvar 19.993 kv Marabout S/S L 20 kv 23.9 MW 11.6 Mvar Palmeraie Connection P2 48.9 MW 19.6 Mvar 60.13 kv 1.5 Mvar 60.555 kv Palmeraie Load CAP9 CAP8 16.772 MVA 1.5 Mvar No2 M/G Marabout Load 26.566 MVA CAP2 CAP1 M6 M4 M2 M5 TL3(Aster366) 8.2km TL4(Aster366) 8.2km 42.9 MW 49. 15.6 Mvar 21.8 Mvar Boulaos S/S H 33.5 MW 2000 A 26.7 Mvar No1 M/G No3 M/L M3 M1 Marabout S/S H 2000 A 60.319 kv 42.5 MW Palmeraie Connection P1 14.1 Mvar 60.942 kv 15.1 MW 33. 42.5 MW -4.5 Mvar 24.1 Mvar 14.1 Mvar No1 P/L Cable(1X800mm2) 5km 15.1 MW -5.3 Mvar 25. 25. 16.7 Mvar 16.8 Mvar 23.9 MW 8.5 Mvar No2 M/L No1 M/L 24 MW 11.9 Mvar 18.1 MW 5.6 Mvar 42 MW 17.5 Mvar 1 6.8 Mvar 2.4 MW 1.3 Mvar Ali Sabieh S/S H 2.4 MW 2000 A 1.3 Mvar 61.272 kv Nagad Load 0 MVA Cable(1X800mm2) No1 B/L No2 B/L No3 B/L T21 19 MVA T22B 66/15 kv T25 4. 2.5 Mvar No1 A/L Boulaos S/S L 19.785 kv 25. 12.4 Mvar 25. 12.4 Mvar 15.2 MW G21 1 G22B 14.4 MW G25 51. 24.8 Mvar Ali Sabieh S/S L 4. 2.3 Mvar 4. 2.3 Mvar 20.024 kv T32 T31 T11 7.7 MVA T12 T13 T14 T15 T16 T17 T18 T23B 11 MVA T24 Ali Sabieh Load 5.233 MVA G32 G31 G 1 G12 G13 G14 図 2 ロードフロー図 2016 年 (Case1) G15 G16 G17 G18 8.5 MW G23B 5.5 MW G24 Boulaos Load 56.98 MVA 9

TL1(Ash) 72km TL2(Ash) 72km TL6(Aster366) TL5(Aster366) Cable(1x800mm2) 3.8km Cable(1x400mm2) 4.8km SR7 TL(Ash) 281km Ethiopia2 25. 25.2 MW 51.2 MW -1.1 Mvar SR12 10.4 Mvar -2.1 Mvar SR8 Semera TL(Ash)281km 25. 25.2 MW -1.1 Mvar 10.4 Mvar SR11 SR4 Ethiopia1 TL(Ash) 283km 25.4 MW 25 MW -1.3 Mvar 10.5 Mvar SR5 SR1 51 MW -1.7 Mvar TL(Ash) 120km TL(Ash) 163km Dire Dawa Jaban As S/S L 2000 A 2.4 MW 0.5 Mvar 25. 25.2 MW -0.4 Mvar SR3 Adigala SR2 11.5 Mvar 63.919 kv Jaban As Load 27. 13.9 Mvar 20.161 kv No4 J/H 230/ No3 J/H 230/ 2.4 MW 27.4 MW 0.5 Mvar 16.7 Mvar No2 J/G No1 J/G No1 J/L No2 J/L 16.4 MW 16.4 MW 16.6 Mvar 16.6 Mvar 5.9 MW 6.8 Mvar 6.9 Mvar 50.5 MW 21.4 Mvar No2 J/H 230/ 50. 15.7 Mvar 14.615 kv Jaban As PS 15 kv 27. 13.9 Mvar G1 G2 G3 G4 G5 G6 G7 Jaban As S/S H 2000 A 31.5 ka 50.1 MW 21.3 Mvar No1 J/H 230/ 5 15.5 Mvar 227.5 kv JabanAs Load New Nagad S/S1 New Nagad S/S2 30.635 MVA 20.109 kv Palmeraie S/S L 15.4 MW 7.5 Mvar 19.93 kv Marabout S/S L 20 kv 24.4 MW 11.8 Mvar 1.6 Mvar Palmeraie Connection P2 53. 23.4 Mvar 61.964 kv Palmeraie Load CAP9 CAP8 17.129 MVA 2000 A 61.496 kv 1.6 Mvar No2 M/G Marabout Load 27.104 MVA CAP2 CAP1 M6 M4 M2 M5 TL3(Aster366) 8.2km TL4(Aster366) 8.2km 46.9 MW 54.1 MW 18.7 Mvar 26 Mvar Boulaos S/S H 37.5 MW 2000 A 30.3 Mvar No1 M/G No3 M/L M3 M1 Marabout S/S H 2000 A 61.73 kv 46.4 MW Palmeraie Connection P1 16.9 Mvar 62.401 kv 15.4 MW 37.9 MW 46.4 MW -4.2 Mvar 27.6 Mvar 16.9 Mvar No1 P/L Cable(1X800mm2) 5km 15.4 MW -5 Mvar 29. 29.5 MW 19.9 Mvar 20 Mvar No2 M/L 24.4 MW 8.7 Mvar No1 M/L 2 12.1 Mvar 21.4 MW 8.4 Mvar 45.9 MW 20.5 Mvar 21. 9.5 Mvar 2.4 MW 1.3 Mvar Ali Sabieh S/S H 2.4 MW 2000 A 1.3 Mvar 62.933 kv Nagad Load 0 MVA Cable(1X800mm2) No1 B/L No2 B/L No3 B/L T21 19 MVA T22B 66/15 kv T25 4. 2.5 Mvar No1 A/L Boulaos S/S L 19.666 kv 29.2 MW 14.2 Mvar 29.4 MW 14.2 Mvar 15.2 MW G21 1 G22B 14.4 MW G25 58. 28.4 Mvar Ali Sabieh S/S L 4. 2.3 Mvar 4. 2.3 Mvar 20.04 kv T32 T31 T11 7.7 MVA T12 T13 T14 T15 T16 T17 T18 T23B 11 MVA T24 Ali Sabieh Load 5.233 MVA G32 G31 G 1 G12 G13 G14 図 3 ロードフロー図 2017 年 (Case2) G15 G16 G17 G18 8.5 MW G23B 5.5 MW G24 Boulaos Load 65.119 MVA 10

TL1(Ash) 72km TL2(Ash) 72km TL6(Aster366) TL5(Aster366) Cable(1x800mm2) 3.8km Cable(1x400mm2) 4.8km SR7 TL(Ash) 281km Ethiopia2 25. 24.9 MW 50.5 MW -6.1 Mvar SR12 5.9 Mvar -12.2 Mvar SR8 Semera TL(Ash)281km 25. 24.9 MW -6.1 Mvar 5.9 Mvar SR11 SR4 Ethiopia1 TL(Ash) 283km 25.1 MW 24. - 6 Mvar SR5 SR1 50. -11.8 Mvar TL(Ash) 120km TL(Ash) 163km Dire Dawa Jaban As S/S L 2000 A 2.4 MW 0.5 Mvar 63.58 kv 25.2 MW 24.9 MW -5.5 Mvar SR3 Adigala SR2 7 Mvar 33.2 MW 8.3 Mvar Jaban As Load 27. 13.9 Mvar 20.043 kv No4 J/H No3 J/H 230/ 230/ 33.1 MW 5.9 Mvar 2.4 MW 27.4 MW 0.5 Mvar 16.7 Mvar No2 J/G No1 J/G No1 J/L No2 J/L 16.4 MW 16.4 MW 16.6 Mvar 16.6 Mvar 5.9 MW 6.8 Mvar 6.9 Mvar 27. 13.9 Mvar G1 G2 G3 G4 G5 JabanAs Load 30.635 MVA 14.542 kv Jaban As PS 15 kv G6 G7 New Nagad S/S1 62.979 kv No2 J/H 230/ 33.1 MW 5.9 Mvar Jaban As S/S H 2000 A 31.5 ka 33.2 MW 32.9 MW 8.3 Mvar 8.2 Mvar No1 J/H 230/ 32.9 MW 5.9 Mvar 11 MW 5.3 Mvar 11 MW New Nagad S/S2 5.3 Mvar 11 MW 5.3 Mvar 20.333 kv Palmeraie S/S L 15.4 MW 7.5 Mvar 6.4 Mvar 20.119 kv Marabout S/S L 20 kv 24.4 MW 11.8 Mvar 1.6 Mvar Palmeraie Connection P2 35. 11.1 Mvar 62.52 kv 6.4 Mvar 2000 A 62.271 kv 1.6 Mvar No2 M/G Marabout Load 27.104 MVA CAP2 CAP1 M6 M4 M2 M5 TL3(Aster366) 8.2km TL4(Aster366) 8.2km 31.1 MW 35. 8.5 Mvar 12 Mvar 22.1 MW 5.2 Mvar Palmeraie Load CAP9 CAP8 17.129 MVA Boulaos S/S H 2000 A 19. 18.4 Mvar No1 M/G No3 M/L M3 M1 Marabout S/S H 2000 A 62.317 kv 30.9 MW Palmeraie Connection P1 7.8 Mvar 62.748 kv 15.4 MW 19. 30.9 MW -4.5 Mvar 15.5 Mvar 7.8 Mvar No1 P/L Cable(1X800mm2) 5km 15.4 MW -5.2 Mvar 21. 23. 23.9 MW 10.9 Mvar 15.1 Mvar 24.4 MW 8.6 Mvar No2 M/L No1 M/L 2 12 Mvar 6.2 MW -0.4 Mvar 30. 11.6 Mvar 6.2 MW 0.9 Mvar 2.4 MW 1.3 Mvar Ali Sabieh S/S H 2.4 MW 2000 A 1.3 Mvar 62.586 kv Nagad Load 12.21 MVA Cable(1X800mm2) No1 B/L No2 B/L No3 B/L T21 19 MVA T22B 66/15 kv T25 4. 2.5 Mvar No1 A/L Boulaos S/S L 20.362 kv 23. 11.5 Mvar 23.9 MW 11.6 Mvar 15.2 MW G21 1 G22B 14.4 MW G25 47. 23.1 Mvar Ali Sabieh S/S L 4. 2.3 Mvar 4. 2.3 Mvar 19.924 kv T32 T31 T11 7.7 MVA T12 T13 T14 T15 T16 T17 T18 T23B 11 MVA T24 Ali Sabieh Load 5.233 MVA G32 G31 G 1 G12 G13 G14 図 4 ロードフロー図 2017 年 (Case3) G15 G16 G17 G18 8.5 MW G23B 5.5 MW G24 Boulaos Load 52.909 MVA 11

TL1(Ash) 72km TL2(Ash) 72km TL6(Aster366) TL5(Aster366) Cable(1x800mm2) 3.8km Cable(1x400mm2) 4.8km SR7 TL(Ash) 281km Ethiopia2 7.4 MW 7. 14. -17.6 Mvar SR12-3.2 Mvar -35.2 Mvar SR8 Semera TL(Ash)281km 7.4 MW 7. -17.6 Mvar -3.2 Mvar SR11 SR4 Ethiopia1 TL(Ash) 283km 7. 7.2 MW -17.7 Mvar -3 Mvar SR5 SR1 14. -34.9 Mvar TL(Ash) 120km TL(Ash) 163km Dire Dawa Jaban As S/S L 2000 A 7.4 MW 7. -17.2 Mvar Adigala -2.3 Mvar SR3 SR2 9.2 MW -15.5 Mvar 64.826 kv 0. 0. 8.4 MW -0.5 Mvar -0.5 Mvar 4.3 Mvar Jaban As Load 8.4 MW 4 Mvar 20.07 kv No1 J/L No2 J/L No4 J/H No3 J/H No2 J/H 230/ 230/ 230/ 9.2 MW 1-1 1.7 Mvar No2 J/G No1 J/G 4. 4. 0 Mvar 0 Mvar 4. 4. 0 Mvar 0 Mvar 8.4 MW 4 Mvar G1 G2 G3 G4 G5 JabanAs Load 9.304 MVA 15.437 kv Jaban As PS 15 kv G6 G7 New Nagad S/S1 64.656 kv Jaban As S/S H 2000 A 31.5 ka 1 9.9 MW 1.9 Mvar 1.9 Mvar No1 J/H 230/ 9.9 MW 1.7 Mvar 3.2 MW 1.5 Mvar 237.6 kv 3.2 MW New Nagad S/S2 1.6 Mvar 3.2 MW 1.6 Mvar 20.351 kv Palmeraie S/S L 2.2 Mvar 20.036 kv Palmeraie Load 5.009 MVA Marabout S/S L 20 kv 7.1 MW 3.5 Mvar 1.6 Mvar Palmeraie Connection P2 11 MW -6.8 Mvar 64.992 kv 2000 A 64.916 kv 1.6 Mvar No2 M/G Marabout Load 7.916 MVA CAP2 CAP1 M6 M4 M2 M5 TL3(Aster366) 8.2km TL4(Aster366) 8.2km 8.4 MW 11 MW -6.1 Mvar -6.8 Mvar 6.2 MW -4.8 Mvar CAP9 CAP8 Boulaos S/S H 2000 A 6.5 MW 6.4 Mvar 8.4 MW -6 Mvar No1 M/G No3 M/L M3 M1 Marabout S/S H 2000 A 64.909 kv Palmeraie Connection P1 64.993 kv 6.5 MW 8.4 MW -10.1 Mvar 3.3 Mvar -6 Mvar No1 P/L Cable(1X800mm2) 5km -10.4 Mvar 6.1 MW 6.9 MW 2 Mvar 3.6 Mvar 3.7 Mvar 7.1 MW 0.3 Mvar No2 M/L No1 M/L 7.1 MW 0.6 Mvar 1. -2.5 Mvar 8.4 MW -1.9 Mvar 1. -1.1 Mvar 0. 0.4 Mvar Ali Sabieh S/S H 0. 2000 A 0.4 Mvar 64.689 kv Nagad Load 3.578 MVA Cable(1X800mm2) No1 B/L No2 B/L No3 B/L T21 19 MVA T22B 66/15 kv T25 1.4 MW 0.7 Mvar No1 A/L Boulaos S/S L 20.335 kv 6.9 MW 3.3 Mvar 3.4 Mvar 15.2 MW G21 1 G22B 14.4 MW G25 13.9 MW 6.7 Mvar Ali Sabieh S/S L 1.4 MW 0.7 Mvar 1.4 MW 0.7 Mvar 19.9 kv T32 T31 T11 7.7 MVA T12 T13 T14 T15 T16 T17 T18 T23B 11 MVA T24 Ali Sabieh Load 1.565 MVA G32 G31 G 1 G12 G13 G14 図 5 ロードフロー図 2017 年 (Case4) G15 G16 G17 G18 8.5 MW G23B 5.5 MW G24 Boulaos Load 15.43 MVA 12

TL1(Ash) 72km TL2(Ash) 72km TL6(Aster366) TL5(Aster366) Cable(1x800mm2) 3.8km Cable(1x400mm2) 4.8km SR7 TL(Ash) 281km Ethiopia2 27.1 MW 26. 54. 1.3 Mvar SR12 12.2 Mvar 2.5 Mvar SR8 Semera TL(Ash)281km 27.1 MW 26. 1.3 Mvar 12.2 Mvar SR11 SR4 Ethiopia1 TL(Ash) 283km 26.9 MW 26.5 MW 1.1 Mvar 12.3 Mvar SR5 SR1 54.1 MW 3 Mvar TL(Ash) 120km TL(Ash) 163km Dire Dawa Jaban As S/S L 2000 A 2.4 MW 0.5 Mvar 27.1 MW 26. 2 Mvar SR3 Adigala SR2 13.4 Mvar 64.001 kv Jaban As Load 3 14.5 Mvar 20.135 kv No4 J/H 230/ No3 J/H 230/ 2.4 MW 30.1 MW 0.5 Mvar 17.8 Mvar No2 J/G No1 J/G No1 J/L No2 J/L 17.2 MW 17.2 MW 1 1 6.4 MW 6.7 Mvar 53.4 MW 25.2 Mvar No2 J/H 230/ 53. 18.6 Mvar 14.436 kv Jaban As PS 15 kv 3 14.5 Mvar G1 G2 G3 G4 G5 G6 G7 Jaban As S/S H 2000 A 31.5 ka 5 25 Mvar No1 J/H 230/ 52.9 MW 18.4 Mvar 226.2 kv JabanAs Load New Nagad S/S1 New Nagad S/S2 33.32 MVA 20.055 kv Palmeraie S/S L 15. 7.7 Mvar 6.2 Mvar 19.896 kv Marabout S/S L 20 kv 24.9 MW 12 Mvar 1.5 Mvar Palmeraie Connection P2 55. 25.4 Mvar 61.907 kv 6.2 Mvar Palmeraie Load CAP9 CAP8 17.576 MVA 2000 A 61.413 kv 1.5 Mvar No2 M/G Marabout Load 27.641 MVA CAP2 CAP1 M6 M4 M2 M5 TL3(Aster366) 8.2km TL4(Aster366) 8.2km 49.1 MW 56. 20.4 Mvar 28.3 Mvar Boulaos S/S H 39.5 MW 2000 A 32 Mvar No1 M/G No3 M/L M3 M1 Marabout S/S H 2000 A 61.669 kv 48.5 MW Palmeraie Connection P1 18.4 Mvar 62.374 kv 15. 39.9 MW 48.5 MW -3.9 Mvar 29.3 Mvar 18.4 Mvar No1 P/L Cable(1X800mm2) 5km 15. -4.8 Mvar 31.1 MW 31. 21.3 Mvar 21.4 Mvar 24.9 MW 8.9 Mvar No2 M/L No1 M/L 25 MW 12.5 Mvar 2 9.5 Mvar 47.9 MW 22 Mvar 22.9 MW 10.7 Mvar 2.4 MW 1.3 Mvar Ali Sabieh S/S H 2.4 MW 2000 A 1.3 Mvar 63.017 kv Nagad Load 0 MVA Cable(1X800mm2) No1 B/L No2 B/L No3 B/L T21 19 MVA T22B 66/15 kv T25 4. 2.5 Mvar No1 A/L Boulaos S/S L 19.885 kv 31 MW 31.1 MW 15.1 Mvar 15.2 MW G21 1 G22B 14.4 MW G25 62.1 MW 30.1 Mvar Ali Sabieh S/S L 4. 2.3 Mvar 4. 2.3 Mvar 20.068 kv T32 T31 T11 7.7 MVA T12 T13 T14 T15 T16 T17 T18 T23B 11 MVA T24 Ali Sabieh Load 5.233 MVA G32 G31 G 1 G12 G13 G14 図 6 ロードフロー図 2018 年 (Case5) G15 G16 G17 G18 8.5 MW G23B 5.5 MW G24 Boulaos Load 69.01 MVA 13

TL1(Ash) 72km TL2(Ash) 72km TL6(Aster366) TL5(Aster366) Cable(1x800mm2) 3.8km Cable(1x400mm2) 4.8km SR7 TL(Ash) 281km Ethiopia2 28.4 MW 27.9 MW 56. 1 Mvar SR12 11.8 Mvar 2 Mvar SR8 Semera TL(Ash)281km 28.4 MW 27.9 MW 1 Mvar 11.8 Mvar SR11 SR4 Ethiopia1 TL(Ash) 283km 28.2 MW 27. 0.8 Mvar 11.9 Mvar SR5 SR1 56.5 MW 2.5 Mvar TL(Ash) 120km TL(Ash) 163km Dire Dawa Jaban As S/S L 2000 A 2.4 MW 0.5 Mvar 28. 27. 1.7 Mvar SR3 Adigala SR2 13 Mvar 64.126 kv Jaban As Load 31.4 MW 15.2 Mvar 20.126 kv No4 J/H 230/ No3 J/H 230/ 2.4 MW 31.5 MW 0.5 Mvar 18.8 Mvar No2 J/G No1 J/G No1 J/L No2 J/L 17.9 MW 17.9 MW 20.5 Mvar 20.5 Mvar 55. 24.4 Mvar No2 J/H 230/ 55. 17.4 Mvar 14.574 kv Jaban As PS 15 kv 6.9 MW 5 MW 5 MW 5 MW 7.2 Mvar 7.2 Mvar 7.2 Mvar 31.4 MW 15.2 Mvar G1 G2 G3 G4 G5 G6 G7 Jaban As S/S H 2000 A 31.5 ka 55.4 MW 24.2 Mvar No1 J/H 230/ 55. 17.2 Mvar 226.2 kv JabanAs Load New Nagad S/S1 New Nagad S/S2 34.886 MVA 20.361 kv Palmeraie S/S L 16.1 MW 7.6 Mvar 6.2 Mvar 19.895 kv Marabout S/S L 20 kv 25.5 MW 12.4 Mvar 1.6 Mvar Palmeraie Connection P2 58.2 MW 27.5 Mvar 61.889 kv 6.2 Mvar Palmeraie Load CAP9 CAP8 17.804 MVA 2000 A 61.366 kv 1.6 Mvar No2 M/G Marabout Load 28.355 MVA CAP2 CAP1 M6 M4 M2 M5 TL3(Aster366) 8.2km TL4(Aster366) 8.2km 51.4 MW 59.1 MW 22.3 Mvar 30.7 Mvar Boulaos S/S H 41. 2000 A 34.2 Mvar No1 M/G No3 M/L M3 M1 Marabout S/S H 2000 A 61.644 kv 50. Palmeraie Connection P1 20.1 Mvar 62.385 kv 16.1 MW 42.1 MW 50. -4 Mvar 31.5 Mvar 20.1 Mvar No1 P/L Cable(1X800mm2) 5km 16.1 MW -4.9 Mvar 32.9 MW 33.1 MW 23 Mvar 23.1 Mvar 25.5 MW 9.2 Mvar No2 M/L No1 M/L 25. 12.9 Mvar 2 10.8 Mvar 50.1 MW 23.7 Mvar 24.4 MW 11.9 Mvar 2.4 MW 1.3 Mvar Ali Sabieh S/S H 2.4 MW 2000 A 1.3 Mvar 63.146 kv Nagad Load 0 MVA Cable(1X800mm2) No1 B/L No2 B/L No3 B/L T21 19 MVA T22B 66/15 kv T25 4. 2.5 Mvar No1 A/L Boulaos S/S L 19.727 kv 32. 15.9 Mvar 32.9 MW 15.9 Mvar 15.2 MW G21 1 G22B 14.4 MW G25 65. 31.8 Mvar Ali Sabieh S/S L 4. 2.3 Mvar 4. 2.3 Mvar 20.111 kv T32 T31 T11 7.7 MVA T12 T13 T14 T15 T16 T17 T18 T23B 11 MVA T24 Ali Sabieh Load 5.233 MVA G32 G31 G 0 G12 G13 G14 図 7 ロードフロー図 2019 年 (Case6) G15 G16 G17 G18 8.5 MW G23B 5.5 MW G24 Boulaos Load 72.991 MVA 14

TL1(Ash) 72km TL2(Ash) 72km TL6(Aster366) TL5(Aster366) Cable(1x800mm2) 3.8km Cable(1x400mm2) 4.8km SR7 TL(Ash) 281km Ethiopia2 27.9 MW 27.5 MW 55. -4.2 Mvar SR12 7.2 Mvar -8.5 Mvar SR8 Semera TL(Ash)281km 27.9 MW 27.5 MW -4.2 Mvar 7.2 Mvar SR11 SR4 Ethiopia1 TL(Ash) 283km 27. 27. -4.4 Mvar 7.4 Mvar SR5 SR1 55. -8 Mvar TL(Ash) 120km TL(Ash) 163km Dire Dawa Jaban As S/S L 2000 A 2.4 MW 0.4 Mvar 27.9 MW 27.4 MW -3.6 Mvar SR3 Adigala SR2 8.4 Mvar 65.144 kv Jaban As Load 31.4 MW 15.2 Mvar 19.904 kv No4 J/H 230/ 64.3 kv 14.98 kv Jaban As PS 15 kv 6.9 MW 5 MW 5 MW 5 MW 7.2 Mvar 7.2 Mvar 7.2 Mvar 31.4 MW 15.2 Mvar G1 G2 G3 G4 G5 JabanAs Load 34.886 MVA No3 J/H 230/ 2.4 MW 31.5 MW 0.4 Mvar 18.9 Mvar No2 J/G No1 J/G No1 J/L No2 J/L 17.9 MW 17.9 MW 20.5 Mvar 20.5 Mvar 55 MW 15.2 Mvar No2 J/H 230/ 54.9 MW 9 Mvar G6 G7 New Nagad S/S1 Jaban As S/S H 2000 A 31.5 ka 54. No1 J/H 230/ 5 8.9 Mvar 15. 7.8 Mvar 228.8 kv 20.09 kv Palmeraie S/S L 16.1 MW 7.6 Mvar 6.4 Mvar 20.091 kv Marabout S/S L 20 kv 25.5 MW 12.4 Mvar 1.6 Mvar Palmeraie Connection P2 3 12.3 Mvar 64.028 kv 6.4 Mvar Palmeraie Load CAP9 CAP8 17.804 MVA 15. New Nagad S/S2 Boulaos S/S H 20. 7.6 Mvar 2000 A 19.5 Mvar 15. 7.6 Mvar 2000 A 63.772 kv 1.6 Mvar No2 M/G Marabout Load 28.355 MVA CAP2 CAP1 M6 M4 M2 M5 TL3(Aster366) 8.2km TL4(Aster366) 8.2km 32. 37. 9.5 Mvar 13.3 Mvar 23. 5.9 Mvar No1 M/G No3 M/L M3 M1 Marabout S/S H 2000 A 63.82 kv 32.4 MW Palmeraie Connection P1 8.8 Mvar 64.265 kv 16.1 MW 20. 32.4 MW -4.3 Mvar 1 8.8 Mvar No1 P/L Cable(1X800mm2) 5km 16.1 MW -5.1 Mvar 22.9 MW 25.1 MW 25.2 MW 11.8 Mvar 16.1 Mvar 16.2 Mvar 25.5 MW 9.3 Mvar No2 M/L No1 M/L 25. 13.1 Mvar 6. -0.4 Mvar 32.2 MW 12.7 Mvar 6. 1 Mvar 2.4 MW 1.3 Mvar Ali Sabieh S/S H 2.4 MW 2000 A 1.3 Mvar 64.185 kv Nagad Load 17.353 MVA Cable(1X800mm2) No1 B/L No2 B/L No3 B/L T21 19 MVA T22B 66/15 kv T25 4. 2.5 Mvar No1 A/L Boulaos S/S L 20.107 kv 25 MW 12.1 Mvar 25.1 MW 12.2 Mvar 15.2 MW G21 1 G22B 14.4 MW G25 50.1 MW 24.3 Mvar Ali Sabieh S/S L 4. 2.3 Mvar 4. 2.3 Mvar 19.922 kv T32 T31 T11 7.7 MVA T12 T13 T14 T15 T16 T17 T18 T23B 11 MVA T24 Ali Sabieh Load 5.233 MVA G32 G31 G 0 G12 G13 G14 図 8 ロードフロー図 2020 年 (Case7) G15 G16 G17 G18 8.5 MW G23B 5.5 MW G24 Boulaos Load 55.682 MVA 15

TL1(Ash) 72km TL2(Ash) 72km TL6(Aster366) TL5(Aster366) Cable(1x800mm2) 3.8km Cable(1x400mm2) 4.8km SR7 TL(Ash) 281km Ethiopia2 29.2 MW 28. 58. -2.1 Mvar SR12 8.9 Mvar -4.3 Mvar SR8 Semera TL(Ash)281km 29.2 MW 28. -2.1 Mvar 8.9 Mvar SR11 SR4 Ethiopia1 TL(Ash) 283km 29 MW 28.5 MW -2.3 Mvar 9.1 Mvar SR5 SR1 58.1 MW -3.8 Mvar TL(Ash) 120km TL(Ash) 163km Dire Dawa Jaban As S/S L 2000 A 2.4 MW 0.5 Mvar 29.1 MW 28. -1.5 Mvar SR3 Adigala SR2 10.1 Mvar 64.397 kv Jaban As Load 32. 15.9 Mvar 19.876 kv No4 J/H 230/ 14.814 kv Jaban As PS 15 kv 5. 5 MW 6.8 Mvar 7.1 Mvar 7.2 Mvar 32. 15.9 Mvar G1 G2 G3 G4 G5 JabanAs Load 36.451 MVA No3 J/H 230/ 2.4 MW 32.9 MW 0.5 Mvar 19.9 Mvar No2 J/G No1 J/G No1 J/L No2 J/L 18. 18. 20.2 Mvar 20.2 Mvar G6 G7 New Nagad S/S1 63.413 kv 57.4 MW 18.6 Mvar No2 J/H 230/ 57. 11.6 Mvar Jaban As S/S H 2000 A 31.5 ka 5 18.4 Mvar No1 J/H 230/ 56.9 MW 11.5 Mvar 1 9 Mvar 227.7 kv 20.093 kv Palmeraie S/S L 16. 8 Mvar 20.051 kv Marabout S/S L 20 kv 26.2 MW 12.7 Mvar 1.6 Mvar Palmeraie Connection P2 37. 13.2 Mvar 63.21 kv Palmeraie Load CAP9 CAP8 18.427 MVA 17.9 MW New Nagad S/S2 Boulaos S/S H 21.1 MW 8.7 Mvar 2000 A 19.9 Mvar 17.9 MW 8.7 Mvar 2000 A 62.945 kv 1.6 Mvar No2 M/G Marabout Load 29.116 MVA CAP2 CAP1 M6 M4 M2 M5 TL3(Aster366) 8.2km TL4(Aster366) 8.2km 33.5 MW 38.2 MW 10.3 Mvar 14.3 Mvar 23.9 MW 6.4 Mvar No1 M/G No3 M/L M3 M1 Marabout S/S H 2000 A 62.996 kv 33. Palmeraie Connection P1 9.5 Mvar 63.46 kv 16. 21.2 MW 33. -3.8 Mvar 17 Mvar 9.5 Mvar No1 P/L Cable(1X800mm2) 5km 16. -4.7 Mvar 23.5 MW 25. 25. 12.1 Mvar 1 1 26.2 MW 9.6 Mvar No2 M/L No1 M/L 26. 13.6 Mvar 6. -0.3 Mvar 3 13.3 Mvar 6. 1 Mvar 2.4 MW 1.3 Mvar Ali Sabieh S/S H 2.4 MW 2000 A 1.3 Mvar 63.406 kv Nagad Load 19.902 MVA Cable(1X800mm2) No1 B/L No2 B/L No3 B/L T21 19 MVA T22B 66/15 kv T25 4. 2.5 Mvar No1 A/L Boulaos S/S L 20.131 kv 25.5 MW 12.3 Mvar 25. 12.4 Mvar 15.2 MW G21 1 G22B 14.4 MW G25 51.1 MW 24.7 Mvar Ali Sabieh S/S L 4. 2.3 Mvar 4. 2.3 Mvar 19.928 kv T32 T31 T11 7.7 MVA T12 T13 T14 T15 T16 T17 T18 T23B 11 MVA T24 Ali Sabieh Load 5.323 MVA G32 G31 G 1 G12 G13 G14 図 9 ロードフロー図 2020 年 (Case8) G15 G16 G17 G18 8.5 MW G23B 5.5 MW G24 Boulaos Load 56.756 MVA 16

TL1(Ash) 72km TL2(Ash) 72km TL6(Aster366) TL5(Aster366) Cable(1x800mm2) 3.8km Cable(1x400mm2) 4.8km SR7 TL(Ash) 281km Ethiopia2 8. 8.2 MW 16. -16.8 Mvar SR12-2.5 Mvar -33.6 Mvar SR8 Semera TL(Ash)281km 8. 8.2 MW -16.8 Mvar -2.5 Mvar SR11 SR4 Ethiopia1 TL(Ash) 283km 8. 8.2 MW -16.9 Mvar -2.3 Mvar SR5 SR1 16. -33.3 Mvar TL(Ash) 120km TL(Ash) 163km Dire Dawa Jaban As S/S L 2000 A 64.73 kv 20 kv 8.4 MW 8.2 MW -16.4 Mvar Adigala -1.6 Mvar SR3 SR2 No1 J/L No2 J/L Jaban As Load 9. 4.6 Mvar No4 J/H 230/ No2 J/G No1 J/G 5.5 MW 5.5 MW 0 Mvar 0 Mvar 5.5 MW 5.4 MW 0 Mvar 0 Mvar 9. 4.6 Mvar G1 G2 G3 G4 G5 JabanAs Load 10.645 MVA No3 J/H 230/ 15.649 kv Jaban As PS 15 kv G6 G7 New Nagad S/S1 64.456 kv 16.5 MW -4.5 Mvar No2 J/H 230/ 16.5 MW -5.1 Mvar Jaban As S/S H 2000 A 31.5 ka 16.4 MW -4.4 Mvar No1 J/H 230/ 16.4 MW -5 Mvar 0. 0. 9. 5.2 MW -0.5 Mvar -0.5 Mvar 4.9 Mvar 2.4 Mvar 237.1 kv 20.282 kv 19.989 kv Palmeraie Load 5.323 MVA 5.2 MW New Nagad S/S2 2.5 Mvar 5.2 MW 2.5 Mvar Marabout S/S L 20 kv 7. 3.7 Mvar Palmeraie S/S L 4. 2.3 Mvar 1.6 Mvar Palmeraie Connection P2 11. - 64.862 kv 2000 A 64.781 kv 1.6 Mvar No2 M/G Marabout Load 8.543 MVA CAP2 CAP1 M6 M4 M2 M5 TL3(Aster366) 8.2km TL4(Aster366) 8.2km 9.1 MW 11. -5.7 Mvar - 6. -4.5 Mvar CAP9 CAP8 Boulaos S/S H 2000 A 6.9 MW 6.7 Mvar No1 M/G No3 M/L M3 M1 Marabout S/S H 2000 A 64.776 kv 9.1 MW Palmeraie Connection P1-5.7 Mvar 64.87 kv 4. 6.9 MW 9.1 MW -9.9 Mvar 3.6 Mvar -5.7 Mvar No1 P/L Cable(1X800mm2) 5km 4. -10.3 Mvar 6. 7.4 MW 7.5 MW 2.2 Mvar 3.9 Mvar 4 Mvar 7. 0.5 Mvar No2 M/L No1 M/L 7. 0.8 Mvar 1.4 MW -2.4 Mvar 9.1 MW -1.6 Mvar 1.4 MW -1 Mvar 0. 0.4 Mvar Ali Sabieh S/S H 0. 2000 A 0.4 Mvar 64.592 kv Nagad Load 5.77 MVA Cable(1X800mm2) No1 B/L No2 B/L No3 B/L T21 19 MVA T22B 66/15 kv T25 1.4 MW 0.7 Mvar No1 A/L Boulaos S/S L 19.9 7.4 MW 3.6 Mvar 7.5 MW 3.6 Mvar 15.2 MW G21 1 G22B 14.4 MW G25 14.9 MW 7.2 Mvar Ali Sabieh S/S L 1.4 MW 0.7 Mvar 1.4 MW 0.7 Mvar 19.87 kv T32 T31 T11 7.7 MVA T12 T13 T14 T15 T16 T17 T18 T23B 11 MVA T24 Ali Sabieh Load 1.565 MVA G32 G31 G 1 G12 G13 G14 図 10 ロードフロー図 2020 年 (Case9) G15 G16 G17 G18 8.5 MW G23B 5.5 MW G24 Boulaos Load 16.548 MVA 17

TL1(Ash) 72km TL2(Ash) 72km TL6(Aster366) TL5(Aster366) Cable(1x800mm2) 3.8km Cable(1x400mm2) 4.8km SR7 TL(Ash) 281km Ethiopia2 31.1 MW 30.5 MW 62.2 MW 1.1 Mvar SR12 11.5 Mvar 2.1 Mvar SR8 Semera TL(Ash)281km 31.1 MW 30.5 MW 1.1 Mvar 11.5 Mvar SR11 SR4 Ethiopia1 TL(Ash) 283km 30.9 MW 30. 0.9 Mvar 11.6 Mvar SR5 SR1 61.9 MW 2.6 Mvar TL(Ash) 120km TL(Ash) 163km Dire Dawa Jaban As S/S L 2000 A 2.4 MW 0.5 Mvar 31.1 MW 30.5 MW 1.8 Mvar SR3 Adigala SR2 12.7 Mvar 64.175 kv Jaban As Load 37. 18.3 Mvar 19.898 kv No4 J/H 230/ 15.15 kv Jaban As PS 15 kv 5. 6.8 Mvar 7 Mvar 37. 18.3 Mvar G1 G2 G3 G4 G5 JabanAs Load 41.907 MVA No3 J/H 230/ 2.4 MW 37. 0.5 Mvar 23.6 Mvar No2 J/G No1 J/G No1 J/L No2 J/L 19.9 MW 19.9 MW 19.8 Mvar 19.8 Mvar G6 G7 New Nagad S/S1 63.058 kv 61.1 MW 23.7 Mvar No2 J/H 230/ 60.9 MW 15.6 Mvar Jaban As S/S H 2000 A 31.5 ka 60. 23.5 Mvar No1 J/H 230/ 60.5 MW 15.5 Mvar 225.9 kv 20.4 MW 10.2 Mvar 20.307 kv Palmeraie S/S L 1 8.2 Mvar 19.941 kv Marabout S/S L 20 kv 26.9 MW 13 Mvar 1.6 Mvar Palmeraie Connection P2 38. 14 Mvar 62.927 kv Palmeraie Load CAP9 CAP8 18.874 MVA 20.2 MW New Nagad S/S2 Boulaos S/S H 21. 9.8 Mvar 2000 A 20.3 Mvar 20.2 MW 9.8 Mvar 2000 A 62.655 kv 1.6 Mvar No2 M/G Marabout Load 29.877 MVA CAP2 CAP1 M6 M4 M2 M5 TL3(Aster366) 8.2km TL4(Aster366) 8.2km 34.4 MW 39.1 MW 11 Mvar 15.2 Mvar 2 7 Mvar No1 M/G No3 M/L M3 M1 Marabout S/S H 2000 A 62.709 kv 34.1 MW Palmeraie Connection P1 10.1 Mvar 63.189 kv 1 21. 34.1 MW -3.4 Mvar 17.4 Mvar 10.1 Mvar No1 P/L Cable(1X800mm2) 5km 1-4.3 Mvar 24.1 MW 26.2 MW 26. 12.5 Mvar 17 Mvar 17.1 Mvar 26.9 MW 9.8 Mvar No2 M/L No1 M/L 2 14 Mvar 6.9 MW -0.04 Mvar 33.9 MW 13.9 Mvar 6.9 MW 1.3 Mvar 2.4 MW 1.3 Mvar Ali Sabieh S/S H 2.4 MW 2000 A 1.3 Mvar 63.181 kv Nagad Load 22.452 MVA Cable(1X800mm2) No1 B/L No2 B/L No3 B/L T21 19 MVA T22B 66/15 kv T25 4. 2.5 Mvar No1 A/L Boulaos S/S L 19.978 kv 26.1 MW 12.6 Mvar 26.2 MW 12.7 Mvar 15.2 MW G21 1 G22B 14.4 MW G25 52. 25.3 Mvar Ali Sabieh S/S L 4. 2.3 Mvar 4. 2.3 Mvar 20.121 kv T32 T31 T11 7.7 MVA T12 T13 T14 T15 T16 T17 T18 T23B 11 MVA T24 Ali Sabieh Load 5.323 MVA G32 G31 G 1 G12 G13 G14 図 11 ロードフロー図 2021 年 (Case10) G15 G16 G17 G18 8.5 MW G23B 5.5 MW G24 Boulaos Load 58.098 MVA 18

TL1(Ash) 72km TL2(Ash) 72km TL6(Aster366) TL5(Aster366) Cable(1x800mm2) 3.8km Cable(1x400mm2) 4.8km SR7 TL(Ash) 281km Ethiopia2 31.1 MW 30.5 MW 62.1 MW -0.3 Mvar SR12 10.3 Mvar -0.6 Mvar SR8 Semera TL(Ash)281km 31.1 MW 30.5 MW -0.3 Mvar 10.3 Mvar SR11 SR4 Ethiopia1 TL(Ash) 283km 30. 30. -0.5 Mvar 10.4 Mvar SR5 SR1 61.9 MW -0.1 Mvar TL(Ash) 120km TL(Ash) 163km Dire Dawa Jaban As S/S L 2000 A 2.4 MW 0.5 Mvar 31 MW 30.4 MW 0.4 Mvar SR3 Adigala SR2 11.5 Mvar 40. 14.2 Mvar 63.583 kv 2.4 MW 0.5 Mvar Jaban As Load 37. 18.3 Mvar 19.985 kv No4 J/H No3 J/H 230/ 230/ 40. 10.5 Mvar 37. 23.6 Mvar No2 J/G No1 J/G No1 J/L No2 J/L 19.9 MW 19.9 MW 19.8 Mvar 19.8 Mvar 15.019 kv Jaban As PS 15 kv 5. 6.8 Mvar 7 Mvar 37. 18.3 Mvar G1 G2 G3 G4 G5 JabanAs Load 41.907 MVA G6 G7 New Nagad S/S1 62.455 kv 40. 14.2 Mvar No2 J/H 230/ 40. 10.5 Mvar Jaban As S/S H 2000 A 31.5 ka 40.4 MW 14.1 Mvar No1 J/H 230/ 40. 10.4 Mvar 226.6 kv 20.4 MW 10.2 Mvar 20.07 kv Palmeraie S/S L 1 8.2 Mvar 19.998 kv Marabout S/S L 20 kv 26.9 MW 13 Mvar 1.6 Mvar Palmeraie Connection P2 38. 14.1 Mvar 62.318 kv Palmeraie Load CAP9 CAP8 18.874 MVA 20.2 MW New Nagad S/S2 Boulaos S/S H 21. 9.8 Mvar 2000 A 20.4 Mvar 20.2 MW 9.8 Mvar 2000 A 62.044 kv 1.6 Mvar No2 M/G Marabout Load 29.877 MVA CAP2 CAP1 M6 M4 M2 M5 TL3(Aster366) 8.2km TL4(Aster366) 8.2km 34.4 MW 39.1 MW 11.1 Mvar 15.4 Mvar 2 7 Mvar No1 M/G No3 M/L M3 M1 Marabout S/S H 2000 A 62.097 kv 34.1 MW Palmeraie Connection P1 10.3 Mvar 62.581 kv 1 21. 34.1 MW -3.5 Mvar 17.6 Mvar 10.3 Mvar No1 P/L Cable(1X800mm2) 5km 1-4.4 Mvar 24 MW 26.2 MW 26. 12.5 Mvar 17 Mvar 17.1 Mvar 26.9 MW 9.9 Mvar No2 M/L No1 M/L 2 14.1 Mvar 6.9 MW -0.2 Mvar 33.9 MW 14 Mvar 6.9 MW 1.1 Mvar 2.4 MW 1.3 Mvar Ali Sabieh S/S H 2.4 MW 2000 A 1.3 Mvar 62.574 kv Nagad Load 22.452 MVA Cable(1X800mm2) No1 B/L No2 B/L No3 B/L T21 19 MVA T22B 66/15 kv T25 4. 2.5 Mvar No1 A/L Boulaos S/S L 20.115 kv 26.1 MW 12.6 Mvar 26.2 MW 12.7 Mvar 15.2 MW G21 1 G22B 14.4 MW G25 52. 25.3 Mvar Ali Sabieh S/S L 4. 2.3 Mvar 4. 2.3 Mvar 19.918 kv T32 T31 T11 7.7 MVA T12 T13 T14 T15 T16 T17 T18 T23B 11 MVA T24 Ali Sabieh Load 5.323 MVA G32 G31 G 1 G12 G13 G14 図 12 ロードフロー図 2021 年 (Case11) G15 G16 G17 G18 8.5 MW G23B 5.5 MW G24 Boulaos Load 58.098 MVA 19

TL1(Ash) 72km TL2(Ash) 72km TL6(Aster366) TL5(Aster366) Cable(1x800mm2) 3.8km Cable(1x400mm2) 4.8km SR7 TL(Ash) 281km Ethiopia2 31 MW 30.5 MW 62.1 MW -1.3 Mvar SR12 9.4 Mvar -2.5 Mvar SR8 Semera TL(Ash)281km 31 MW 30.5 MW -1.3 Mvar 9.4 Mvar SR11 SR4 Ethiopia1 TL(Ash) 283km 30. 30.2 MW -1.5 Mvar 9.6 Mvar SR5 SR1 61. -2.1 Mvar TL(Ash) 120km TL(Ash) 163km Dire Dawa Jaban As S/S L 2000 A 63.87 kv 31 MW -0.6 Mvar SR3 Adigala SR2 2.4 MW 2.4 MW 18.9 MW 18.9 MW 0.5 Mvar 0.5 Mvar 10.5 Mvar 10.5 Mvar No1 J/L No2 J/L Jaban As Load 18.9 MW 9.2 Mvar 18.9 MW 9.2 Mvar 19.928 kv 15.083 kv Jaban As PS 15 kv New Nagad S/S1 62.747 kv 227 kv No1 J/H 230/ 40. 9.4 Mvar 20.187 kv 30.4 MW 10.6 Mvar Jaban As S/S H M6 M4 M2 M5 M3 M1 2000 A 31.5 ka TL3(Aster366) 8.2km No4 J/H No3 J/H 230/ 230/ 40.5 MW 9.4 Mvar No2 J/G No1 J/G 19.9 MW 19.9 MW 19.8 Mvar 19.8 Mvar 5. 6.8 Mvar 7 Mvar 37. 18.3 Mvar G1 G2 G3 G4 G5 JabanAs Load 41.907 MVA 40. 13.1 Mvar 40. 13.1 Mvar No2 J/H 230/ 40.5 MW 9.4 Mvar G6 G7 Palmeraie S/S L 1 8.2 Mvar 6.4 Mvar 20.101 kv Marabout S/S L 20 kv 26.9 MW 13 Mvar 1.6 Mvar Palmeraie Connection P2 38. 13.9 Mvar 62.621 kv 6.4 Mvar Palmeraie Load CAP9 CAP8 18.874 MVA 20.2 MW New Nagad S/S2 Boulaos S/S H 21. 9.8 Mvar 2000 A 20.4 Mvar 20.2 MW 9.8 Mvar 2000 A 62.347 kv 1.6 Mvar Marabout Load No2 M/G No1 M/G 29.877 MVA CAP2 CAP1 No3 M/L 40. 13 Mvar Marabout S/S H TL4(Aster366) 8.2km 2000 A 20.4 MW 10.2 Mvar 34.4 MW 39.1 MW 11 Mvar 15.1 Mvar 2 6.9 Mvar 62.4 kv 34.1 MW Palmeraie Connection P1 10.1 Mvar 62.881 kv 1 21. 34.1 MW -3.6 Mvar 17.5 Mvar 10.1 Mvar No1 P/L Cable(1X800mm2) 5km 1-4.5 Mvar 24 MW 26.2 MW 26. 12.4 Mvar 16.9 Mvar 17 Mvar 26.9 MW 9.9 Mvar No2 M/L No1 M/L 2 14.1 Mvar 6.9 MW -0.2 Mvar 33.9 MW 13.8 Mvar 6.9 MW 1.1 Mvar 2.4 MW 1.3 Mvar Ali Sabieh S/S H 2.4 MW 2000 A 1.3 Mvar 62.868 kv Nagad Load 22.452 MVA Cable(1X800mm2) No1 B/L No2 B/L No3 B/L T21 19 MVA T22B 66/15 kv T25 4. 2.5 Mvar No1 A/L Boulaos S/S L 20.232 kv 26.1 MW 12.6 Mvar 26.2 MW 12.7 Mvar 15.2 MW G21 1 G22B 14.4 MW G25 52. 25.3 Mvar Ali Sabieh S/S L 4. 2.3 Mvar 4. 2.3 Mvar 20.017 kv T32 T31 T11 7.7 MVA T12 T13 T14 T15 T16 T17 T18 T23B 11 MVA T24 Ali Sabieh Load 5.323 MVA G32 G31 G 1 G12 G13 G14 図 13 ロードフロー図 2021 年 (Case12) G15 G16 G17 G18 8.5 MW G23B 5.5 MW G24 Boulaos Load 58.098 MVA 20

TL1(Ash) 72km TL2(Ash) 72km TL6(Aster366) TL5(Aster366) Cable(1x800mm2) 3.8km Cable(1x400mm2) 4.8km SR7 TL(Ash) 281km Ethiopia2 8.9 MW 8. 17. -1 SR12-2 Mvar -32.5 Mvar SR8 Semera TL(Ash)281km 8.9 MW 8. -1-2 Mvar SR11 SR4 Ethiopia1 TL(Ash) 283km 8. 8. -16.4 Mvar -1.8 Mvar SR5 SR1 17. -32.2 Mvar TL(Ash) 120km TL(Ash) 163km Dire Dawa Jaban As S/S L 2000 A 8.9 MW 8. -15.8 Mvar Adigala -1.1 Mvar SR3 SR2 11.2 MW -13.9 Mvar 64.387 kv 0. 0. 5.5 MW 5.5 MW -0.5 Mvar -0.5 Mvar 2.8 Mvar 2.8 Mvar No1 J/L No2 J/L Jaban As Load 5.5 MW 2.6 Mvar 5.5 MW 2.6 Mvar 20.02 kv No2 J/G 5. 0 Mvar 5. 5. 0 Mvar 0 Mvar No1 J/G 5. 0 Mvar 11 MW 5.3 Mvar G1 G2 G3 G4 G5 JabanAs Load 12.21 MVA No4 J/H No3 J/H No2 J/H 230/ 230/ 230/ 11.2 MW -14.6 Mvar 12 MW 3.2 Mvar 64.07 kv 14.673 kv Jaban As PS 15 kv Jaban As S/S H 2000 A 31.5 ka 12 MW 11.9 MW 3.5 Mvar 3.5 Mvar No1 J/H 230/ 11.9 MW 3.2 Mvar 5.9 MW 2.8 Mvar 236.8 kv G6 G7 New Nagad S/S1 5.9 MW New Nagad S/S2 2.9 Mvar 5.9 MW 2.9 Mvar 20.151 kv Palmeraie S/S L 5 MW 2.4 Mvar 6.2 Mvar 19.868 kv Palmeraie Load 5.546 MVA Marabout S/S L 20 kv 7.9 MW 3.8 Mvar 1.6 Mvar Palmeraie Connection P2 12 MW -5.9 Mvar 64.5 kv 6.2 Mvar 2000 A 64.417 kv 1.6 Mvar No2 M/G Marabout Load 8.766 MVA CAP2 CAP1 M6 M4 M2 M5 TL3(Aster366) 8.2km TL4(Aster366) 8.2km 9.4 MW 12.1 MW -5.4 Mvar -5.9 Mvar 6.9 MW -4.3 Mvar CAP9 CAP8 Boulaos S/S H 2000 A 6.8 Mvar No1 M/G No3 M/L M3 M1 Marabout S/S H 2000 A 64.413 kv 9.4 MW Palmeraie Connection P1-5.4 Mvar 64.512 kv 5 MW 9.4 MW -9.7 Mvar 3.7 Mvar -5.4 Mvar No1 P/L Cable(1X800mm2) 5km 5 MW - 6. 7. 7. 2.3 Mvar 4.1 Mvar 4.1 Mvar 7.9 MW 0.7 Mvar No2 M/L No1 M/L 7.9 MW 1 Mvar 1.5 MW -2.3 Mvar 9.4 MW -1.3 Mvar 1.5 MW -1 Mvar 0. 0.4 Mvar Ali Sabieh S/S H 0. 2000 A 0.4 Mvar 64.247 kv Nagad Load 6.574 MVA Cable(1X800mm2) No1 B/L No2 B/L No3 B/L T21 19 MVA T22B 66/15 kv T25 1.4 MW 0.7 Mvar No1 A/L Boulaos S/S L 20.131 kv 7. 3.7 Mvar 7. 3.7 Mvar 15.2 MW G21 1 G22B 14.4 MW G25 15. 7.4 Mvar Ali Sabieh S/S L 1.4 MW 0.7 Mvar 1.4 MW 0.7 Mvar 20.01 kv T32 T31 T11 7.7 MVA T12 T13 T14 T15 T16 T17 T18 T23B 11 MVA T24 Ali Sabieh Load 1.565 MVA G32 G31 G 1 G12 G13 G14 図 14 ロードフロー図 2021 年 (Case13) G15 G16 G17 G18 8.5 MW G23B 5.5 MW G24 Boulaos Load 16.996 MVA 21

TL1(Ash) 72km TL2(Ash) 72km TL6(Aster366) TL5(Aster366) Cable(1x800mm2) 3.8km Cable(1x400mm2) 4.8km SR7 TL(Ash) 281km Ethiopia2 3 32. 65.9 MW -0.7 Mvar SR12 9.7 Mvar -1.3 Mvar SR8 Semera TL(Ash)281km 3 32. -0.7 Mvar 9.7 Mvar SR11 SR4 Ethiopia1 TL(Ash) 283km 32. 32.1 MW -0.9 Mvar 9.8 Mvar SR5 SR1 65. -0.9 Mvar TL(Ash) 120km TL(Ash) 163km Dire Dawa Jaban As S/S L 2000 A 2.4 MW 0.5 Mvar 32.9 MW 32. 0.02 Mvar SR3 Adigala SR2 10.9 Mvar 43.1 MW 13.4 Mvar 63.705 kv 2.4 MW 21. 0.5 Mvar 12.2 Mvar Jaban As Load 20.051 kv No4 J/H No3 J/H 230/ 230/ 4 9.3 Mvar No2 J/G No1 J/G No1 J/L No2 J/L 21.1 MW 21.1 MW 23.9 Mvar 23.9 Mvar 62.447 kv 43.1 MW 13.4 Mvar No2 J/H 230/ 4 9.3 Mvar 15.149 kv Jaban As PS 15 kv Jaban As S/S H 2000 A 31.5 ka 42. 13.3 Mvar No1 J/H 230/ 42. 9.3 Mvar 226.6 kv 21. 22. 12.2 Mvar 11.5 Mvar 20.036 kv Palmeraie S/S L 1 8.2 Mvar 20.025 kv Marabout S/S L 20 kv 27. 13.4 Mvar 1.5 Mvar Palmeraie Connection P2 39.5 MW 14.8 Mvar 21. 21. 5. 5 MW 10.4 Mvar 10.4 Mvar 6.8 Mvar 6.8 Mvar 6.8 Mvar 7.1 Mvar 7.2 Mvar Palmeraie Load CAP9 CAP8 43.2 MW 18.874 MVA 20.9 Mvar G1 G2 G3 G4 G5 G6 G7 JabanAs Load New Nagad S/S1 22.5 MW New Nagad S/S2 Boulaos S/S H 22. 47.99 MVA 10.9 Mvar 2000 A 21.1 Mvar 22.5 MW 10.9 Mvar 62.399 kv 2000 A 62.114 kv 1.5 Mvar No2 M/G Marabout Load 30.771 MVA CAP2 CAP1 M6 M4 M2 M5 TL3(Aster366) 8.2km TL4(Aster366) 8.2km 35.2 MW 39.9 MW 11.8 Mvar 16.1 Mvar 25 MW 7.5 Mvar No1 M/G No3 M/L M3 M1 Marabout S/S H 2000 A 62.166 kv 34.9 MW Palmeraie Connection P1 10.9 Mvar 62.6 1 22.5 MW 34.9 MW -3.5 Mvar 18.3 Mvar 10.9 Mvar No1 P/L Cable(1X800mm2) 5km 1-4.4 Mvar 24. 26. 26.9 MW 12.9 Mvar 17.5 Mvar 17.6 Mvar No2 M/L 27. 10.3 Mvar No1 M/L 27. 14.8 Mvar 6. -0.3 Mvar 34. 14.6 Mvar 6. 1 Mvar 2.4 MW 1.3 Mvar Ali Sabieh S/S H 2.4 MW 2000 A 1.3 Mvar 62.699 kv Nagad Load 25.001 MVA Cable(1X800mm2) No1 B/L No2 B/L No3 B/L T21 19 MVA T22B 66/15 kv T25 4. 2.5 Mvar No1 A/L Boulaos S/S L 20.098 kv 26. 12.9 Mvar 26. 13 Mvar 15.2 MW G21 1 G22B 14.4 MW G25 53.5 MW 25.9 Mvar Ali Sabieh S/S L 4. 2.3 Mvar 4. 2.3 Mvar 19.96 kv T32 T31 T11 7.7 MVA T12 T13 T14 T15 T16 T17 T18 T23B 11 MVA T24 Ali Sabieh Load 5.323 MVA G32 G31 G 1 G12 G13 G14 図 15 ロードフロー図 2022 年 (Case14) G15 G16 G17 G18 8.5 MW G23B 5.5 MW G24 Boulaos Load 59.44 MVA 22

TL1(Ash) 72km TL2(Ash) 72km TL6(Aster366) TL5(Aster366) Cable(1x800mm2) 3.8km Cable(1x400mm2) 4.8km SR7 TL(Ash) 281km Ethiopia2 34.9 MW 34.2 MW 69. 2.4 Mvar SR12 12 Mvar 4.7 Mvar SR8 Semera TL(Ash)281km 34.9 MW 34.2 MW 2.4 Mvar 12 Mvar SR11 SR4 Ethiopia1 TL(Ash) 283km 34. 33.9 MW 2.1 Mvar 12.1 Mvar SR5 SR1 69.5 MW 5.2 Mvar TL(Ash) 120km TL(Ash) 163km Dire Dawa Jaban As S/S L 2000 A 2.5 MW 0.5 Mvar 34.9 MW 3.1 Mvar SR3 Adigala SR2 63.706 kv 2.5 MW 24.4 MW 0.5 Mvar 14 Mvar Jaban As Load 19.952 kv 34.1 MW 13.3 Mvar 45. 1 No4 J/H No3 J/H 230/ 230/ 45.5 MW 11.9 Mvar No2 J/G No1 J/G No1 J/L No2 J/L 22. 22. 23.5 Mvar 23.5 Mvar 62.448 kv 45. 1 No2 J/H 230/ 45.5 MW 11.9 Mvar 15.139 kv Jaban As PS 15 kv Jaban As S/S H 2000 A 31.5 ka 45.2 MW 16.4 Mvar No1 J/H 230/ 45.1 MW 11.8 Mvar 224.9 kv 24.4 MW 22. 14 Mvar 11.5 Mvar 20.274 kv Palmeraie S/S L 1 8.7 Mvar 19.96 kv Marabout S/S L 20 kv 29.1 MW 14.1 Mvar 1.6 Mvar Palmeraie Connection P2 40.9 MW 16 Mvar 24.4 MW 24.4 MW 5.5 MW 11.8 Mvar 11.8 Mvar 6.8 Mvar 6.8 Mvar 6.8 Mvar 7 Mvar Palmeraie Load CAP9 CAP8 48. 19.992 MVA 23.6 Mvar G1 G2 G3 G4 G5 G6 G7 JabanAs Load New Nagad S/S1 22.5 MW New Nagad S/S2 Boulaos S/S H 22. 54.207 MVA 10.9 Mvar 2000 A 21.7 Mvar 22.5 MW 10.9 Mvar 62.316 kv 2000 A 62.026 kv 1.6 Mvar No2 M/G Marabout Load 32.3 CAP2 CAP1 M6 M4 M2 M5 TL3(Aster366) 8.2km TL4(Aster366) 8.2km 36. 41. 12.9 Mvar 17.4 Mvar 25.9 MW 8.2 Mvar No1 M/G No3 M/L M3 M1 Marabout S/S H 2000 A 62.077 kv 36. Palmeraie Connection P1 11.8 Mvar 62.595 kv 1 22. 36. -2.8 Mvar 18.8 Mvar 11.8 Mvar No1 P/L Cable(1X800mm2) 5km 1-3.9 Mvar 25.5 MW 27.4 MW 27.5 MW 13.5 Mvar 18 Mvar 18.1 Mvar 29.1 MW 10.9 Mvar No2 M/L No1 M/L 29.2 MW 15.8 Mvar 6. -0.3 Mvar 3 15.5 Mvar 6. 1 Mvar 2.5 MW 1.3 Mvar Ali Sabieh S/S H 2.5 MW 2000 A 1.3 Mvar 62.66 kv Nagad Load 25.001 MVA Cable(1X800mm2) No1 B/L No2 B/L No3 B/L T21 19 MVA T22B 66/15 kv T25 4.9 MW 2.6 Mvar No1 A/L Boulaos S/S L 20.019 kv 27. 13.2 Mvar 27.4 MW 13.3 Mvar 15.2 MW G21 1 G22B 14.4 MW G25 54. 2 Ali Sabieh S/S L 4.9 MW 2.4 Mvar 4.9 MW 2.4 Mvar 19.928 kv T32 T31 T11 7.7 MVA T12 T13 T14 T15 T16 T17 T18 T23B 11 MVA T24 Ali Sabieh Load 5.456 MVA G32 G31 G 1 G12 G13 G14 図 16 ロードフロー図 2023 年 (Case15) G15 G16 G17 G18 8.5 MW G23B 5.5 MW G24 Boulaos Load 60.781 MVA 23

TL1(Ash) 72km TL2(Ash) 72km TL6(Aster366) TL5(Aster366) Cable(1x800mm2) 3.8km Cable(1x400mm2) 4.8km SR7 TL(Ash) 281km Ethiopia2 36.2 MW 35.4 MW 72.4 MW 4.6 Mvar SR12 13.7 Mvar 9.1 Mvar SR8 Semera TL(Ash)281km 36.2 MW 35.4 MW 4.6 Mvar 13.7 Mvar SR11 SR4 Ethiopia1 TL(Ash) 283km 35.9 MW 35.1 MW 4.3 Mvar 13.8 Mvar SR5 SR1 72.1 MW 9.6 Mvar TL(Ash) 120km TL(Ash) 163km Dire Dawa Jaban As S/S L 2000 A 2.5 MW 0.5 Mvar 36.2 MW 35. 5.3 Mvar SR3 Adigala SR2 47.2 MW 18.8 Mvar 63.976 kv 2.5 MW 25.9 MW 0.5 Mvar Jaban As Load 19.993 kv No4 J/H No3 J/H 230/ 230/ 47.1 MW 13.8 Mvar No2 J/G No1 J/G No1 J/L No2 J/L 23.1 MW 23.1 MW 23.1 Mvar 23.1 Mvar 62.724 kv 47.2 MW 18.8 Mvar No2 J/H 230/ 47.1 MW 13.8 Mvar 15.19 kv Jaban As PS 15 kv Jaban As S/S H 2000 A 31.5 ka 46. 18.7 Mvar No1 J/H 230/ 46. 13.7 Mvar 223.7 kv 25.9 MW 22. 11.5 Mvar 20.224 kv Palmeraie S/S L 18.5 MW 9 Mvar 20.006 kv Marabout S/S L 20 kv 30. 14.9 Mvar 1.6 Mvar Palmeraie Connection P2 42.2 MW 17.2 Mvar 25. 25. 5.1 MW 12.5 Mvar 12.5 Mvar 6.8 Mvar 7.1 Mvar Palmeraie Load CAP9 CAP8 51. 20.573 MVA 25 Mvar G1 G2 G3 G4 G5 G6 G7 JabanAs Load New Nagad S/S1 22.5 MW New Nagad S/S2 Boulaos S/S H 23.5 MW 57.337 MVA 10.9 Mvar 2000 A 22.5 Mvar 22.5 MW 10.9 Mvar 62.515 kv 2000 A 62.214 kv 1.6 Mvar No2 M/G Marabout Load 34.125 MVA CAP2 CAP1 M6 M4 M2 M5 TL3(Aster366) 8.2km TL4(Aster366) 8.2km 3 42. 14 Mvar 18.7 Mvar 26. 8.8 Mvar No1 M/G No3 M/L M3 M1 Marabout S/S H 2000 A 62.26 kv 37. Palmeraie Connection P1 12.9 Mvar 62.799 kv 18.5 MW 23. 37. -2.5 Mvar 19.7 Mvar 12.9 Mvar No1 P/L Cable(1X800mm2) 5km 18.5 MW -3.6 Mvar 26. 28.1 MW 28.2 MW 14.2 Mvar 18.6 Mvar 18.7 Mvar 30. 11.8 Mvar No2 M/L No1 M/L 30. 17.3 Mvar 6.5 MW -0.7 Mvar 37. 16.6 Mvar 6.5 MW 0.6 Mvar 2.5 MW 1.3 Mvar Ali Sabieh S/S H 2.5 MW 2000 A 1.3 Mvar 62.937 kv Nagad Load 25.001 MVA Cable(1X800mm2) No1 B/L No2 B/L No3 B/L T21 19 MVA T22B 66/15 kv T25 4.9 MW 2.6 Mvar No1 A/L Boulaos S/S L 20.04 kv 2 13.6 Mvar 28.1 MW 13.6 Mvar 15.2 MW G21 1 G22B 14.4 MW G25 56.1 MW 27.2 Mvar Ali Sabieh S/S L 4.9 MW 2.4 Mvar 4.9 MW 2.4 Mvar 20.021 kv T32 T31 T11 7.7 MVA T12 T13 T14 T15 T16 T17 T18 T23B 11 MVA T24 Ali Sabieh Load 5.456 MVA G32 G31 G 1 G12 G13 G14 図 17 ロードフロー図 2024 年 (Case16) G15 G16 G17 G18 8.5 MW G23B 5.5 MW G24 Boulaos Load 62.346 MVA 24

TL1(Ash) 72km TL2(Ash) 72km TL6(Aster366) TL5(Aster366) Cable(1x800mm2) 3.8km Cable(1x400mm2) 4.8km SR7 TL(Ash) 281km Ethiopia2 37.4 MW 36.5 MW 74.9 MW 6.8 Mvar SR12 15.5 Mvar 13.7 Mvar SR8 Semera TL(Ash)281km 37.4 MW 36.5 MW 6.8 Mvar 15.5 Mvar SR11 SR4 Ethiopia1 TL(Ash) 283km 37.2 MW 36. 6.6 Mvar 15.6 Mvar SR5 SR1 7 14.2 Mvar TL(Ash) 120km TL(Ash) 163km Dire Dawa Jaban As S/S L 2000 A 2.5 MW 0.5 Mvar 37.4 MW 7.6 Mvar SR3 Adigala SR2 63.314 kv 2.5 MW 27.2 MW 0.5 Mvar 15.9 Mvar Jaban As Load 19.999 kv 36.5 MW 16.8 Mvar 48. 21.2 Mvar No4 J/H No3 J/H 230/ 230/ 48. 15.6 Mvar No2 J/G No1 J/G No1 J/L No2 J/L 23. 23. 22.9 Mvar 22.9 Mvar 62.047 kv 48. 21.2 Mvar No2 J/H 230/ 48. 15.6 Mvar 15.038 kv Jaban As PS 15 kv Jaban As S/S H 2000 A 31.5 ka 48. 21 Mvar No1 J/H 230/ 48.2 MW 15.5 Mvar 222.4 kv 27.2 MW 22. 15.9 Mvar 11.5 Mvar 20.212 kv 20.002 kv 27.1 MW 27.1 MW 6.5 MW 13.2 Mvar 13.2 Mvar 6.7 Mvar 6.8 Mvar Palmeraie Load 54. 21.11 MVA 2 G1 G2 G3 G4 G5 G6 G7 JabanAs Load New Nagad S/S1 22.5 MW New Nagad S/S2 60.334 MVA 10.9 Mvar 22.5 MW 10.9 Mvar Marabout S/S L 20 kv 32.1 MW 15.5 Mvar Palmeraie S/S L 19 MW 9.2 Mvar 1.6 Mvar Palmeraie Connection P2 43.4 MW 18.2 Mvar 61.764 kv 2000 A 61.451 kv 1.6 Mvar No2 M/G Marabout Load 35.646 MVA CAP2 CAP1 M6 M4 M2 M5 TL3(Aster366) 8.2km TL4(Aster366) 8.2km 39.2 MW 43.9 MW 15.1 Mvar 19.9 Mvar 27. 9.5 Mvar CAP9 CAP8 Boulaos S/S H 2000 A 24.2 MW 23.3 Mvar No1 M/G No3 M/L M3 M1 Marabout S/S H 2000 A 61.493 kv 38. Palmeraie Connection P1 13.8 Mvar 62.057 kv 19 MW 24. 38. -2.3 Mvar 20.5 Mvar 13.8 Mvar No1 P/L Cable(1X800mm2) 5km 19 MW -3.4 Mvar 27.1 MW 28. 28. 14.6 Mvar 19 Mvar 19.1 Mvar No2 M/L 32.1 MW 12.4 Mvar No1 M/L 32.2 MW 18.4 Mvar 6.2 MW -0.9 Mvar 38.4 MW 17.4 Mvar 6.2 MW 0.3 Mvar 2.5 MW 1.3 Mvar Ali Sabieh S/S H 2.5 MW 2000 A 1.3 Mvar 62.26 kv Nagad Load 25.001 MVA Cable(1X800mm2) No1 B/L No2 B/L No3 B/L T21 19 MVA T22B 66/15 kv T25 4.9 MW 2.6 Mvar No1 A/L Boulaos S/S L 20.086 kv 28.5 MW 13.8 Mvar 28. 13.9 Mvar 15.2 MW G21 1 G22B 14.4 MW G25 57.2 MW 27.7 Mvar Ali Sabieh S/S L 4.9 MW 2.4 Mvar 4.9 MW 2.4 Mvar 20.065 kv T32 T31 T11 7.7 MVA T12 T13 T14 T15 T16 T17 T18 T23B 11 MVA T24 Ali Sabieh Load 5.456 MVA G32 G31 G 1 G12 G13 G14 図 18 ロードフロー図 2025 年 (Case17) G15 G16 G17 G18 8.5 MW G23B 5.5 MW G24 Boulaos Load 63.554 MVA 25

TL1(Ash) 72km TL2(Ash) 72km TL6(Aster366) TL5(Aster366) Cable(1x800mm2) 3.8km Cable(1x400mm2) 4.8km SR7 TL(Ash) 281km Ethiopia2 37. 36.5 MW 74. 5.3 Mvar SR12 14.2 Mvar 10.7 Mvar SR8 Semera TL(Ash)281km 37. 36.5 MW 5.3 Mvar 14.2 Mvar SR11 SR4 Ethiopia1 TL(Ash) 283km 37.1 MW 36.2 MW 5.1 Mvar 14.3 Mvar SR5 SR1 74.4 MW 11.2 Mvar TL(Ash) 120km TL(Ash) 163km Dire Dawa Jaban As S/S L 2000 A 2.5 MW 0.5 Mvar 37. 6.1 Mvar SR3 Adigala SR2 63.759 kv 2.5 MW 27.2 MW 0.5 Mvar 15.9 Mvar Jaban As Load 19.869 kv 36.4 MW 15.5 Mvar 48. 19.4 Mvar No4 J/H No3 J/H 230/ 230/ 48.5 MW 14.1 Mvar No2 J/G No1 J/G No1 J/L No2 J/L 23. 23. 22.9 Mvar 22.9 Mvar 62.502 kv 48. 19.4 Mvar No2 J/H 230/ 48.5 MW 14.1 Mvar 15.136 kv Jaban As PS 15 kv Jaban As S/S H 2000 A 31.5 ka 48. 19.3 Mvar No1 J/H 230/ 48.2 MW 14 Mvar 223.2 kv 27.2 MW 22. 15.9 Mvar 11.5 Mvar 20.207 kv 19.916 kv 27.1 MW 27.1 MW 6.5 MW 13.2 Mvar 13.2 Mvar 6.7 Mvar 6.8 Mvar Palmeraie Load 54. 21.11 MVA 2 G1 G2 G3 G4 G5 G6 G7 JabanAs Load New Nagad S/S1 22.5 MW New Nagad S/S2 60.334 MVA 10.9 Mvar 22.5 MW 10.9 Mvar Marabout S/S L 20 kv 32.1 MW 15.5 Mvar M6 M4 M2 M5 TL3(Aster366) 8.2km TL4(Aster366) 8.2km Palmeraie S/S L 19 MW 9.2 Mvar 6.2 Mvar 1.6 Mvar Palmeraie Connection P2 43. 16.7 Mvar 62.297 kv 6.2 Mvar 2000 A 61.993 kv 1.6 Mvar Marabout Load No2 M/G No1 M/G 35.646 MVA CAP2 CAP1 No3 M/L 39.2 MW 43. 13.1 Mvar 18.3 Mvar 27. 8.5 Mvar CAP9 CAP8 Boulaos S/S H 2000 A 24.1 MW 21.7 Mvar M3 M1 Marabout S/S H 2000 A 10. 4.8 Mvar 62.054 kv 38. Palmeraie Connection P1 11.9 Mvar 62.605 kv 10. 4.1 Mvar 19 MW 24. 38. -2.2 Mvar 18.9 Mvar 11.9 Mvar No1 P/L Cable(1X800mm2) 5km 19 MW -3.3 Mvar 2 28. 28. 13.7 Mvar 18.9 Mvar 19 Mvar 10. 10. 4.1 Mvar 4.1 Mvar No2 M/L No1 M/L 10. 10. 4.8 Mvar 4.8 Mvar 6. 1.3 Mvar 38.4 MW 15.6 Mvar 6. 2.5 Mvar 2.5 MW 1.3 Mvar Ali Sabieh S/S H 2.5 MW 2000 A 1.3 Mvar 62.715 kv Nagad Load 25.001 MVA Cable(1X800mm2) No1 B/L No2 B/L No3 B/L T21 19 MVA T22B 66/15 kv T25 4.9 MW 2.6 Mvar No1 A/L Boulaos S/S L 20.3 kv 28.5 MW 13.8 Mvar 28. 13.9 Mvar 15.2 MW G21 1 G22B 14.4 MW G25 57.2 MW 27.7 Mvar Ali Sabieh S/S L 4.9 MW 2.4 Mvar 4.9 MW 2.4 Mvar 19.947 kv T32 T31 T11 7.7 MVA T12 T13 T14 T15 T16 T17 T18 T23B 11 MVA T24 Ali Sabieh Load 5.456 MVA G32 G31 G 1 G12 G13 G14 図 19 ロードフロー図 2025 年 (Case18) G15 G16 G17 G18 8.5 MW G23B 5.5 MW G24 Boulaos Load 63.554 MVA 26