optimum
DESCRIPTION
optimumTRANSCRIPT
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TUGAS 3 OPERASI OPTIMUM SISTEM TENAGA LISTRIK
Oleh : Daniel Mahardhika (2213 105 052)
Diketahui data sebagai berikut:
Data Karakteristik Unit Pembangkit
Unit Max (MW) Min
(MW)
Incremental Heat Rate (Btu/kwh)
No-load Cost (R/h)
Full Load Cost
(R/mWh)
Min. Time Up
(jam)
Min. Time Down (jam)
1 80 25 10440 213,00 23,54 4 2 2 250 60 9000 585,62 20,34 5 3 3 300 75 8730 684,74 19,74 5 4 4 60 20 11900 252,00 28,00 1 1
Data Keadaan Awal
Unit Kondisi Awal Start-Up Cost Jam offline (-)/online (+) Hot (R) Cold (R) Cold Start (R) 1 -5 150 350 4 2 8 170 400 5 3 8 500 1100 5 4 -6 0 0 0
Data Pola beban
Beban Jam Beban (MW)
1 450 2 530 3 600 4 540 5 400 6 280 7 290 8 500
Data Tingkatan Kapasitas Unit Keadaan (State)
Kombinasi Unit
Maksimum Kapasitas Bersih
15 1111 690 14 1110 630 13 0111 610 12 0110 550 11 1011 440 10 1101 390 9 1010 380 8 0011 360 7 1100 330 6 0101 310 5 0010 300 4 1001 250 3 1001 140 2 1000 80 1 0001 60 0 0000 0
Fuel Cost 2,00 R/Mbtu
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1. Kasus pertama, merupakan priority list schedule (rencana jadwal prioritas). (min up/down time : 1 jam untuk semua unit, start up cost : cold start cost)
Data Tingkat Prioritas Keadaan
(State) Kombinasi
Unit Maksimum Kapasitas Bersih
Untuk Tiap Kombinasi 15 1111 690 14 1110 630 12 0110 550 5 0010 300
A. J = 1; Jam ke-1, Beban = 450 MW
K = 15 (1,15) = min{} [(1,15) + (0,12; 1,15)]
F1 = 20,88 (25) + 213,00 = 735 F2 = 18,00 (105) + 585,62 = 2475.62 F3 = 17,46 (300) + 684,74 = 5922.74 F4 = 23,80 (20) + 252,00 = 728 PCost (1,15) = F1 + F2 + F3 + F4 = 9861.36 FCost (1,15) = 9861.36 + 350 = 10211.36
K = 14
(1,14) = min{} [(1,14) + (0,12; 1,14)] F1 = 20,88 (25) + 213,00 = 735 F2 = 18,00 (125) + 585,62 = 2835.62 F3 = 17,46 (300) + 684,74 = 5922.74 PCost (1,14) = F1 + F2 + F3 = 9493.36 FCost (1,14) = 9493.36 + 350 = 9843.36
K = 12
(1,12) = min{} [(1,12) + (0,12; 1,12)] F2 = 18,00 (150) + 585,62 = 3285.62 F3 = 17,46 (300) + 684,74 = 5922.74 PCost (1,12) = F2 + F3 = 9208.36 FCost (1,12) = 9208.36 + 0 = 9208.36
Biaya yang paling minimal pada stage 1 adalah FCost (1,12) = 9208.36
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B. J = 2; Jam ke-2, Beban = 530 MW K = 15
(2,15) = min(12;14){} [(2,15) + (1, ; 2,15) + (1, )] F1 = 20,88 (25) + 213,00 = 735 F2 = 18,00 (185) + 585,62 = 3915.62 F3 = 17,46 (300) + 684,74 = 5922.74 F4 = 23,80 (20) + 252,00 = 728 PCost (2,15) = F1 + F2 + F3 + F4 = 11301.36
FCost (2,15) = 11301.36 + (9208.36 + 350)(9843.36 + 0) = 20859.72
K = 14
(2,14) = min(12;14){} [(2,14) + (1, ; 2,14) + (1, )] F1 = 20,88 (25) + 213,00 = 735 F2 = 18,00 (205) + 585,62 = 4275.62 F3 = 17,46 (300) + 684,74 = 5922.74 PCost (2,14) = F1 + F2 + F3 = 10933.36
FCost (2,14) = 10933.36 + (9208.36 + 350)(9843.36 + 0) = 20491.36
K = 12
(2,12) = min(12;14){} [(2,12) + (1, ; 2,12) + (1, )] F2 = 18,00 (230) + 585,62 = 4725.62 F3 = 17,46 (300) + 684,74 = 5922.74 PCost (2,12) = F2 + F3 = 10648.36
FCost (2,12) = 10648.36 + (9208.36 + 0)(9843.36 + 0) = 19856.72
Biaya yang paling minimal pada stage 2 adalah FCost (2,12) = 19856.72
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C. J = 3; Jam ke-3, Beban = 600 MW K = 15
(3,15) = min(12;14){} [(3,15) + (1, ; 3,15) + (1, )] F1 = 20,88 (30) + 213,00 = 839.4 F2 = 18,00 (250) + 585,62 = 5085.62 F3 = 17,46 (300) + 684,74 = 5922.74 F4 = 23,80 (20) + 252,00 = 728 PCost (3,15) = F1 + F2 + F3 + F4 = 12575.76
FCost (3,15) = 12575.76 + (19856.72 + 350)(20491.36 + 0) = 32782.48
K = 14
(3,14) = min(12;14){} [(3,14) + (1, ; 3,14) + (1, )] F1 = 20,88 (50) + 213,00 = 1257 F2 = 18,00 (250) + 585,62 = 5085.62 F3 = 17,46 (300) + 684,74 = 5922.74 PCost (3,14) = F1 + F2 + F3 = 12265.36
FCost (3,14) = 12265.36 + (19856.72 + 350)(20491.36 + 0) = 32472.08
Biaya yang paling minimal pada stage 3 adalah FCost (3,14) = 32472.08
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D. J = 4; Jam ke-4, Beban = 540 MW K = 15
(4,15) = min(14;15){} [(4,15) + (1, ; 4,15) + (1, )] F1 = 20,88 (25) + 213,00 = 735 F2 = 18,00 (195) + 585,62 = 4095.62 F3 = 17,46 (300) + 684,74 = 5922.74 F4 = 23,80 (20) + 252,00 = 728 PCost (4,15) = F1 + F2 + F3 + F4 = 11481.36
FCost (4,15) = 11481.36 + (32472.08 + 0)(32782.48 + 0) = 43953.44
K = 14
(4,14) = min(14;15){} [(4,14) + (1, ; 4,14) + (1, )] F1 = 20,88 (25) + 213,00 = 735 F2 = 18,00 (215) + 585,62 = 4455.62 F3 = 17,46 (300) + 684,74 = 5922.74 PCost (4,14) = F1 + F2 + F3 = 11113.36
FCost (4,14) = 11113.36 + (32472.08 + 0)(32782.48 + 0) = 43585.44
K = 12
(4,12) = min(14;15){} [(4,12) + (1, ; 4,12) + (1, )] F2 = 18,00 (240) + 585,62 = 4905.62 F3 = 17,46 (300) + 684,74 = 5922.74 PCost (4,12) = F2 + F3 = 10828.36
FCost (4,12) = 10828.36 + (32472.08 + 0)(32782.48 + 0) = 43300.44
Biaya yang paling minimal pada stage 4 adalah FCost (4,12) = 43300.44
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E. J = 5; Jam ke-5, Beban = 400 MW K = 15
(5,15) = min(12;14){} [(5,15) + (1, ; 5,15) + (1, )] F1 = 20,88 (25) + 213,00 = 735 F2 = 18,00 (60) + 585,62 = 1665.62 F3 = 17,46 (295) + 684,74 = 5835.44 F4 = 23,80 (20) + 252,00 = 728 PCost (5,15) = F1 + F2 + F3 + F4 = 8967.06
FCost (5,15) = 8967.06 + (43300.44 + 350)(43585.44 + 0) = 52552.5
K = 14
(5,14) = min(12;14){} [(5,14) + (1, ; 5,14) + (1, )] F1 = 20,88 (25) + 213,00 = 735 F2 = 18,00 (75) + 585,62 = 1935.62 F3 = 17,46 (300) + 684,74 = 5922.74 PCost (5,14) = F1 + F2 + F3 = 8593.36
FCost (5,14) = 8593.36+ (43300.44 + 350)(43585.44 + 0) = 52178.8
K = 12
(5,12) = min(12;14){} [(5,12) + (1, ; 5,12) + (1, )] F2 = 18,00 (100) + 585,62 = 2385.62 F3 = 17,46 (300) + 684,74 = 5922.74 PCost (5,12) = F2 + F3 = 8308.36
FCost (5,12) = 8308.36 + (43300.44 + 0)(43585.44 + 0) = 51608.8
Biaya yang paling minimal pada stage 5 adalah FCost (5,12) = 51608.8
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F. J = 6; Jam ke-6, Beban = 280 MW K = 15
(6,15) = min(12;14){} [(6,15) + (1, ; 6,15) + (1, )] F1 = 20,88 (25) + 213,00 = 735 F2 = 18,00 (60) + 585,62 = 1665.62 F3 = 17,46 (175) + 684,74 = 3740.24 F4 = 23,80 (20) + 252,00 = 728 PCost (6,15) = F1 + F2 + F3 + F4 = 6868.86
FCost (6,15) = 6868.86 + (51893.8 + 350)(52178.8 + 0) = 59047.66
K = 14
(6,14) = min(12;14){} [(6,14) + (1, ; 6,14) + (1, )] F1 = 20,88 (25) + 213,00 = 735 F2 = 18,00 (60) + 585,62 = 1665.62 F3 = 17,46 (195) + 684,74 = 4089.44 PCost (6,14) = F1 + F2 + F3 = 6490.06
FCost (6,14) = 6490.06 + (51893.8 + 350)(52178.8 + 0) = 58668.86
K = 12
(6,12) = min(12;14){} [(6,12) + (1, ; 6,12) + (1, )] F2 = 18,00 (60) + 585,62 = 1665.62 F3 = 17,46 (220) + 684,74 = 4525.94 PCost (6,12) = F2 + F3 = 6191.56
FCost (6,12) = 6191.56 + (51608.8 + 0)(52178.8 + 0) = 57800.36
K = 5
(6,5) = min(12;14){} [(6,5) + (1,; 6,5) + (1, )] F3 = 17,46 (280) + 684,74 = 5573.54 PCost (6,5) = F3 = 5573.54
FCost (6,5) = 5573.54 + (51608.8 + 0)(52178.8 + 0) = 57182.34
Biaya yang paling minimal pada stage 6 adalah FCost (6,5) = 57182.34
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G. J = 7; Jam ke-7, Beban = 290 MW K = 15
(7,15) = min(5;12){} [(7,15) + (1, ; 7,15) + (1, )] F1 = 20,88 (25) + 213,00 = 735 F2 = 18,00 (60) + 585,62 = 1665.62 F3 = 17,46 (185) + 684,74 = 3914.84 F4 = 23,80 (20) + 252,00 = 728 PCost (7,15) = F1 + F2 + F3 + F4 = 7043.46
FCost (7,15) = 7043.46 + (57182.34 + 750)(57800.36 + 350) = 64975.8
K = 14
(7,14) = min(5;12){} [(7,14) + (1,; 7,14) + (1, )] F1 = 20,88 (25) + 213,00 = 735 F2 = 18,00 (60) + 585,62 = 1665.62 F3 = 17,46 (205) + 684,74 = 4264.04 PCost (7,14) = F1 + F2 + F3 = 6664.66
FCost (7,14) = 6664.66 + (57182.34 + 750)(57800.36 + 350) = 64597.0
K = 12
(7,12) = min(5;12){} [(7,12) + (1,; 7,12) + (1, )] F2 = 18,00 (60) + 585,62 = 1665.62 F3 = 17,46 (230) + 684,74 = 4700.54 PCost (7,12) = F2 + F3 = 6366.16
FCost (7,12) = 6366.16 + (57182.34 + 400)(57800.36 + 0) = 63948.5
K = 5
(7,5) = min(5;12){} [(7,5) + (1, ; 7,5) + (1, )] F3 = 17,46 (290) + 684,74 = 5748.14 PCost (7,5) = F3 = 5748.14
FCost (7,5) = 5748.14 + (57182.34 + 0)(57800.36 + 0) = 62930.48
Biaya yang paling minimal pada stage 7 adalah FCost (7,5) = 62930.48
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H. J = 8; Jam ke-8, Beban = 500 MW K = 15
(8,15) = min(5;12){} [(8,15) + (1, ; 8,15) + (1, )] F1 = 20,88 (25) + 213,00 = 735 F2 = 18,00 (155) + 585,62 = 12675.62 F3 = 17,46 (300) + 684,74 = 5922.74 F4 = 23,80 (20) + 252,00 = 728 PCost (8,15) = F1 + F2 + F3 + F4 = 20061.36
FCost (8,15) = 20061.36 + (62930.48 + 750)(63948.5 + 350) = 83741.84
K = 14
(8,15) = min(5;12){} [(8,15) + (1,; 8,15) + (1, )] F1 = 20,88 (25) + 213,00 = 735 F2 = 18,00 (175) + 585,62 = 3735.62 F3 = 17,46 (300) + 684,74 = 5922.74 PCost (8,14) = F1 + F2 + F3 = 10393.36
FCost (8,14) = 10393.36 + (62930.48 + 750)(63948.5 + 350) = 74073.84
K = 12
(8,15) = min(5;12){} [(8,15) + (1,; 8,15) + (1, )] F2 = 18,00 (200) + 585,62 = 4185.62 F3 = 17,46 (300) + 684,74 = 5922.74 PCost (8,12) = F2 + F3 = 10108.36
FCost (8,12) = 10108.36 + (62930.48 + 400)(63948.5 + 0) = 73438.84
Biaya yang paling minimal pada stage 8 adalah FCost (8,12) = 73438.84
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2. Kasus kedua, sama dengan kasus pertama namun dengan melakukan complete enumeration (semua kombinasi diperhitungkan) dengan mengabaikan biaya hot start, minimum uptime dan minimum downtime. (min up/down time : 1 jam untuk semua unit, start up cost : cold start cost)
Data Kombinasi yang Memungkinkan Stage Load Kombinasi
1 450 15 ; 14 ; 13 ; 12 2 530 15 ; 14 ; 13 ; 12 3 600 15 ; 14 ; 13 4 540 15 ; 14 ; 13 ; 12 5 400 15 ; 14 ; 13 ; 12 ; 11 6 280 15 ; 14 ; 13 ; 12 ; 11 ; 10 ; 9 ; 8 ; 7 ; 6 ; 5 7 290 15 ; 14 ; 13 ; 12 ; 11 ; 10 ; 9 ; 8 ; 7 ; 6 ; 5 8 500 15 ; 14 ; 13 ; 12
A. J = 1; Jam ke-1, Beban = 450 MW
K = 15 FCost (1,15) = 9861.36 + 350 = 10211.36
K = 14
FCost (1,14) = 9493.36 + 350 = 9843.36
K = 13 (1,13) = min{} [(1,13) + (0,13; 1,13)]
F2 = 18,00 (130) + 585,62 = 2925.62 F3 = 17,46 (300) + 684,74 = 5922.74 F4 = 23.8 (20) + 252.00 = 728 PCost (1,13) = F2 + F3 + F4 = 9576.62 FCost (1,13) = 9576.62 + 0 = 9576.62
K = 12
FCost (1,12) = 9208.36 + 0 = 9208.36 Biaya yang paling minimal pada stage 1 adalah FCost (1,12) = 9208.36
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B. J = 2; Jam ke-2, Beban = 530 MW K = 15
FCost (2,15) = 11301.36 + (9208.36 + 350)(9576.62 + 0) = 20859.72
K = 14
FCost (2,14) = 10933.36 + (9208.36 + 350)(9576.62 + 0) = 20491.36
K = 13
(2,13) = min(12;13){} [(2,13) + (1, ; 2,13) + (1, )] F2 = 18,00 (210) + 585,62 = 4365.62 F3 = 17,46 (300) + 684,74 = 5922.74 F4 = 23.8 (20) + 252.00 = 728 PCost (2,13) = F2 + F3 + F4 = 11016.36
FCost (2,13) = 11016.36 + (9208.36 + 0)(9576.62 + 0) = 20224.72
K = 12
FCost (2,12) = 10648.36 + (9208.36 + 0)(9576.62 + 0) = 19856.72
Biaya yang paling minimal pada stage 2 adalah FCost (2,12) = 19856.72
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C. J = 3; Jam ke-3, Beban = 600 MW K = 15
FCost (3,15) = 12575.76 + (19856.72 + 350)(20224.72 + 0) = 32782.48
K = 14
FCost (3,14) = 12265.36 + (19856.72 + 350)(20224.72 + 0) = 32472.08
K = 13
(3,13) = min(12;13){} [(3,13) + (1, ; 3,13) + (1, )] F2 = 18,00 (250) + 585,62 = 5085.62 F3 = 17,46 (300) + 684,74 = 5922.74 F4 = 23.8 (50) + 252.00 = 1442 PCost (3,13) = F2 + F3 + F4 = 12450.36
FCost (3,13) = 12450.36 + (19856.72 + 0)(20224.72 + 0) = 32307.08
Biaya yang paling minimal pada stage 3 adalah FCost (3,13) = 32307.08
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D. J = 4; Jam ke-4, Beban = 540 MW K = 15
FCost (4,15) = 11481.36 + (32307.08 + 350)(32472.08 + 0) = 43953.44
K = 14
FCost (4,14) = 11113.36 + (32307.08 + 350)(32472.08 + 0) = 43585.44
K = 13
(4,13) = min(13;14){} [(4,13) + (1, ; 4,13) + (1, )] F2 = 18,00 (220) + 585,62 = 4545.62 F3 = 17,46 (300) + 684,74 = 5922.74 F4 = 23.8 (20) + 252.00 = 728 PCost (4,13) = F2 + F3 + F4 = 11196.36
FCost (4,13) = 11196.36 + (32307.08 + 0)(32472.08 + 0) = 43503.44
K = 12
FCost (4,12) = 10828.36 + (32307.08 + 0)(32472.08 + 0) = 43135.44
Biaya yang paling minimal pada stage 4 adalah FCost (4,12) = 43135.44
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E. J = 5; Jam ke-5, Beban = 400 MW K = 15
FCost (5,15) = 8967.06 + (43135.44 + 350)(43503.44 + 0) = 52452.5
K = 14
FCost (5,14) = 8593.36+ (43135.44 + 350)(43503.44 + 0) = 52078.8
K = 13
(5,13) = min(12;13){} [(5,13) + (1, ; 5,13) + (1, )] F2 = 18,00 (80) + 585,62 = 2025.62 F3 = 17,46 (300) + 684,74 = 5922.74 F4 = 23.8 (20) + 252.00 = 728 PCost (5,13) = F2 + F3 + F4 = 8676.36
FCost (5,13) = 8676.36 + (43135.44 + 0)(43503.44 + 0) = 51811.8
K = 12
FCost (5,12) = 8308.36 + (43135.44 + 0)(43503.44 + 0) = 51443.8
K = 11
(5,11) = min(12;13){} [(5,13) + (1, ; 5,13) + (1, )] F1 = 20.88 (80) + 213.00 = 1883.4 F3 = 17,46 (300) + 684,74 = 5922.74 F4 = 23.8 (20) + 252.00 = 728 PCost (5,11) = F1 + F3 + F4 = 8534.14
FCost (5,11) = 8534.14 + (43135.44 + 350)(43503.44 + 0) = 52019.58
Biaya yang paling minimal pada stage 5 adalah FCost (5,12) = 51443.8
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F. J = 6; Jam ke-6, Beban = 280 MW K = 15
FCost (6,15) = 6868.86 + (51443.8 + 350)(51811.8 + 0) = 58662.66
K = 14
FCost (6,14) = 6490.06 + (51443.8 + 350)(51811.8 + 0) = 58283.86
K = 13
(6,13) = min(12;13){} [(6,13) + (1, ; 6,13) + (1, )] F2 = 18,00 (25) + 585,62 = 1035.62 F3 = 17,46 (235) + 684,74 = 4787.84 F4 = 23.8 (20) + 252.00 = 728 PCost (6,13) = F2 + F3 + F4 = 6551.46
FCost (6,13) = 6551.46 + (51443.8 + 0)(51811.8 + 0) = 57995.26
K = 12
FCost (6,12) = 6191.56 + (51443.8 + 0)(51811.8 + 0) = 57635.36
K = 11
(6,11) = min(12;13){} [(6,11) + (1, ; 6,11) + (1, )] F1 = 20,88 (25) + 213,00 = 735 F3 = 17,46 (235) + 684,74 = 4787.84 F4 = 23.8 (20) + 252.00 = 728 PCost (6,11) = F1 + F3 + F4 = 6250.84
FCost (6,11) = 6250.84 + (51443.8 + 350)(51811.8 + 0) = 58044.64
K = 10
(6,10) = min(12;13){} [(6,10) + (1, ; 6,10) + (1, )] F1 = 20,88 (25) + 213,00 = 735 F2 = 18,00 (235) + 585,62 = 4815.62 F4 = 23.8 (20) + 252.00 = 728 PCost (6,10) = F1 + F2 + F4 = 6278.62
FCost (6,10) = 6278.62 + (51443.8 + 350)(51811.8 + 0) = 58072.42
K = 9
(6,9) = min(12;13){} [(6,9) + (1,; 6,9) + (1, )] F1 = 20,88 (25) + 213,00 = 735 F3 = 17,46 (255) + 684,74 = 5137.04 PCost (6,9) = F1 + F3 = 5872.04
FCost (6,9) = 5872.04 + (51443.8 + 350)(51811.8 + 0) = 57665.84
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K = 8 (6,8) = min(12;13){} [(6,8) + (1,; 6,8) + (1, )]
F3 = 17,46 (260) + 684,74 = 5224,34 F4 = 23,88 (20) + 252,00 = 728 PCost (6,8) = F3 + F4 = 5952.34
FCost (6,8) = 5952.34 + (51443.8 + 0)(51811.8 + 0) = 57396.84
K = 7
(6,7) = min(12;13){} [(6,7) + (1,; 6,7) + (1, )] F1 = 20,88 (30) + 213,00 = 839,4 F2 = 18,00 (250) + 585,62 = 5085,62 PCost (6,7) = F1 + F2 = 5925.02
FCost (6,7) = 5925.02 + (51443.8 + 350)(51811.8 + 0) = 57718.82
K = 6
(6,6) = min(12;13){} [(6,6) + (1,; 6,6) + (1, )] F1 = 20,88 (25) + 213,00 = 735 F3 = 17,46 (255) + 684,74 = 5137.04 PCost (6,6) = F1 + F3 = 5872.04
FCost (6,6) = 5872.04 + (51443.8 + 350)(51811.8 + 0) = 57315.84
K = 5
FCost (6,12) = 5573.54 + (51443.8 + 0)(51811.8 + 0) = 57017.34
Biaya yang paling minimal pada stage 6 adalah FCost (6,5) = 57017.34
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G. J = 7; Jam ke-7, Beban = 290 MW K = 15
FCost (7,15) = 7043.46 + (57017.34 + 750)(57315.84 + 1450) = 64810,8
K = 14
FCost (7,14) = 6664.66 + (57017.34 + 750)(57315.84 + 1450) = 64432,0
K = 13
(7,13) = min(5;6){} [(7,13) + (1, ; 7,13) + (1, )] F2 = 18,00 (25) + 585,62 = 1035.62 F3 = 17,46 (245) + 684,74 = 4962,44 F4 = 23.8 (20) + 252.00 = 728 PCost (7,13) = F2 + F3 + F4 = 6726.06
FCost (7,13) = 6726.06 + (57017.34 + 400)(57315.84 + 1100) = 64143,4
K = 12
FCost (7,12) = 6366.16 + (57017.34 + 400)(57315.84 + 1100) = 63783,5
K = 11
(7,11) = min(5;6){} [(7,11) + (1, ; 7,11) + (1, )] F1 = 20,88 (25) + 213,00 = 735 F3 = 17,46 (245) + 684,74 = 4962.84 F4 = 23.8 (20) + 252.00 = 728 PCost (7,11) = F1 + F3 + F4 = 6425.84
FCost (7,11) = 6425.84 + (57017.34 + 350)(57315.84 + 1450) = 63793,18
K = 10
(7,10) = min(5;6){} [(7,10) + (1, ; 7,10) + (1, )] F1 = 20,88 (25) + 213,00 = 735 F2 = 18,00 (245) + 585,62 = 4995.62 F4 = 23.8 (20) + 252.00 = 728 PCost (7,10) = F1 + F2 + F4 = 6278.62
FCost (7,10) = 6458.62 + (57017.34 + 750)(57315.84 + 350) = 64124.46
K = 9
(7,9) = min(5;6){} [(7,9) + (1,; 7,9) + (1, )] F1 = 20,88 (25) + 213,00 = 735 F3 = 17,46 (265) + 684,74 = 5311,64 PCost (7,9) = F1 + F3 = 6046,64
FCost (7,9) = 6046,64 + (57017.34 + 350)(57315.84 + 1450) = 63413,98
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K = 8 (7,8) = min(5;6){} [(7,8) + (1,; 7,8) + (1, )]
F3 = 17,46 (270) + 684,74 = 5398,94 F4 = 23,88 (20) + 252,00 = 728 PCost (7,8) = F3 + F4 = 6126,94
FCost (7,8) = 6126,94 + (57017.34 + 0)(57315.84 + 0) = 63144.28
K = 7
(7,7) = min(5;6){} [(7,7) + (1,; 7,7) + (1, )] F1 = 20,88 (40) + 213,00 = 1048,2 F2 = 18,00 (250) + 585,62 = 5085,62 PCost (7,7) = F1 + F2 = 6133,82
FCost (7,7) = 6133,82 + (57017.34 + 750)(57315.84 + 350) = 63799.66
K = 6
(7,6) = min(5;6){} [(7,6) + (1,; 7,6) + (1, )] F1 = 20,88 (25) + 213,00 = 735 F3 = 17,46 (265) + 684,74 = 5311.64 PCost (7,6) = F1 + F3 = 6046.64
FCost (7,6) = 6046.64 + (57017.34 + 400)(57315.84 + 0) = 63362.48
K = 5
(7,5) = min(5;6){} [(7,5) + (1,; 7,5) + (1, )] F3 = 17,46 (290) + 684,74 = 5748.14 PCost (7,5) = F3 = 5748.14
FCost (7,5) = 5748.14 + (57017.34 + 0)(57315.84 + 0) = 62765.04
Biaya yang paling minimal pada stage 7 adalah FCost (7,5) = 62765.04
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H. J = 8; Jam ke-8, Beban = 500 MW K = 15
FCost (8,15) = 20061.36 + (62765.04 + 750)(63144.28 + 750) = 83576.4
K = 14
FCost (8,14) = 10393.36 + (62765.04 + 750)(63144.28 + 750) = 73908.4
K = 13
(8,13) = min(5;8){} [(8,13) + (1, ; 8,13) + (1, )] F2 = 18,00 (180) + 585,62 = 3825.62 F3 = 17,46 (300) + 684,74 = 5922,74 F4 = 23.8 (20) + 252.00 = 728 PCost (8,13) = F2 + F3 + F4 = 10476,36
FCost (8,13) = 10476,36 + (62765.04 + 400)(63144.28 + 400) = 73641,4
K = 12
FCost (8,12) = 10108.36 + (62765.04 + 400)(63144.28 + 400) = 73273.4
Biaya yang paling minimal pada stage 8 adalah FCost (8,12) = 73273.4
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3. Kasus ketiga, melibatkan hot/cold start, minimum uptime dan minimum downtime. Menggunakan PowerGen dengan melakukan complete enumeration (semua kombinasi diperhitungkan). PowerGen memiliki kombinasi sebagai berikut:
Terdapat perbedaan urutan kombinasi dengan kombinasi berdasarkan urutan kapasitas unit (konsdisi awal)
Data Perbandingan Kombinasi PowerGen dengan Kombinasi urutan Kapasitas
PowrGen Kombinasi Kondisi Awal 1 2 3 4 1 1 1 1 1 15 2 1 1 1 0 14 3 1 1 0 1 10 4 1 1 0 0 7 5 1 0 1 1 11 6 1 0 1 0 9 7 1 0 0 1 4 8 1 0 0 0 2 9 0 1 1 1 13 10 0 1 1 0 12 11 0 1 0 1 6 12 0 1 0 0 3 13 0 0 1 1 8 14 0 0 1 0 5 15 0 0 0 1 1
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Dengan inputan data sebagai berikut:
Didapatkan hasil:
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Perbandingan Kasus 1, Kasus 2, dan Kasus 3:
Data Kombinasi Perjam Tiap Kasus
Jam Kombinasi
Kasus 1
Kasus 2
Kasus 3
1 12 12 12 2 12 12 12 3 14 13 13 4 12 12 12 5 12 12 12 6 5 5 12 7 5 5 12 8 12 12 12
Grafik Kombinasi Perjam Tiap Kasus