สาขา ไฟฟ าแขนงไฟฟ ากําลัง วิชา EE03 Electrical System Design

1 : : EE03 Electrical System Design 1 . 1 . 2 . 3 . 4 .. 4. 2 . 1 Line to Earth Short Circuit 2 Three Phase Short Circuit 3 Line to Line Short Circuit with Earth Connection 4 Line to Line Short Circuit without Earth Connection 2. 3 IEC 60909 . 1 . 2 . 3 . 4 . 1. 4 IEC 60909 . 1 . 2 . 3 . 4 . 2. 5 IEC 60909 . 1 . 2 . 3 . 4 . 3. 6 IEC 60909 . 1 . 2 . 3 . 4 . 4. 7 . 1 . 2 . 3 .. 4 . 3. 8 (Balanced Three-Phase Short Circuit). Sequence Impedance . 1 Positive Sequence Impedance 2 Negative Sequence Impedance 3 Zero Sequence Impedance 4 .. 1. 9 (Line to Earth Short Circuit) Sequence Impedance . 1 Positive Sequence Impedance 2 Negative Sequence Impedance 3 Zero Sequence Impedance 4 .. 4. 10 ( Line to Line Short Circuit with Earth Connection ) Sequence Impedance . 1 Positive Sequence Impedance 2 Negative Sequence Impedance 3 Zero Sequence Impedance 4 .. 4. 11 ( Line to Line Short Circuit without Earth Connection ) Sequence Impedance.

2 1 Positive Sequence Impedance 2 Negative Sequence Impedance 3 Zero Sequence Impedance 4 .. 4. 12 .. 1 Line to Earth Short Circuit 2 Three Phase Short Circuit 3 Line to Line Short Circuit with Earth Connection 4 Line to Line Short Circuit without Earth Connection 1. 13 . 1 ( Thermal Stress ) . 2 ( Mechanical Stress ) . 3 . 4 . 3. 14 . 1 AC . 2 DC . 3 AC . 4 2 AC DC. 4. 15 . 1 IEC 60898. 2 IEC 60947-2. 3 IEC 60439-1. 4 IEC 60909. 4. 16 IEC 60909 . 1 . 2 . 3 . 4 . 4. 17 Voltage Factor (c) 400/230V . 1 2 3 4 2. 18 Voltage Factor (c) 416/240V . 1 2 3 4 3. 19 Voltage Factor (c) 22 kV 3 .. 1 2 3 4 3. 20 Voltage Factor (c) 115 kV 3 . 1 2 3 4 3. 21 3 10 kA 22 kV .. 1 281 MVA. 2 381 MVA. 3 481 MVA. 4 581 MVA. 2. 22 3 10 kA 230 kV .. 1 1984 MVA. 2 2984 MVA. 3 3984 MVA. 4 4984 MVA. 3. 23 1000 kVA, 24kV/416V, Impedance Voltage 6%, IC (. Interrupting Capacity ) . 1 50 kA. 2 40 kA. 3 30 kA. 4 20 kA. 3. 24 3 10 kA 115 kV.

3 1 3992 MVA. 2 2992 MVA. 3 1992 MVA. 4 992 MVA. 3. 25 3150 kVA, 22 kV/400-230V, %U = 8, KT = 1, . (Infinite Bus) . 1 kA. 2 kA. 3 kA. 4 kA. 3. 26 2000 kVA, 33 kV/400-230 V, %U = , KT = 1, . (Infinite Bus) . 1 kA. 2 kA. 3 kA. 4 kA. 1. 27 40 MVA , 115kV / 22 kV , % U = 12 % Infinite Bus . MV . 1 kA. 2 kA. 3 kA. 4 kA. 3. 28 1600 kVA, 22 kV/400V, Impedance Voltage 6%, . IC ( Interrupting Capacity ) . 1 60 kA. 2 50 kA. 3 35 kA. 4 25 kA. 2. 29 3 10 kA 22 kV .. 1 281 MVA. 2 381 MVA. 3 481 MVA. 4 581 MVA. 2. 30. 1 .. 2 . 3 . 4 . 1. 31. 1 .. 2 . 3 . 4 .. 1. 32. 1 .. 2 .. 3 . 4 . 2. 33. 1 kA. 2 kA. 3 kA. 4 kA. 2. 34. 1 kA. 2 kA. 3 kA. 4 kA. 3. 35. 1. 2. 3. 4. 2. 36. 1. 2. 3. 4. 1. 37. 1. 2. 3. 4. 4. 38. 1 kA. 2 kA. 3 kA. 4 kA. 3. 39. 1 kA. 2 kA. 3 kA. 4 kA. 2. 40. 1. 2. 3. 4. 2. 41. 1. 2. 3. 4. 2. 42. 1. 2. 3. 4. 2. 43 22 kV 3 S''kQ = 350 MVA, X / R = 8 . 22 kV 3 400/230 V, 3 4 , RQt, XQt .. 1 RQt = m , XQt = m 2 RQt = m , XQt = m 3 RQt = m , XQt = m 4.

4 2. 44. 1. 2. 3. 4. 1. 45. 1. 2. 3. 4. 4. 46. 1 kA. 2 kA. 3 kA. 4 kA. 3. 47 1600 kVA, 22 kV / 400-230 V, Short Circuit Impedance . ZkT = + m (Infinite Bus) . Busway ZL = + / km 50 m SDB SDB. 1 kA. 2 kA. 3 kA. 4 kA. 3. 48. 1 kA. 2 kA. 3 kA. 4 kA. 2. 49. 1 kA. 2 kA. 3 kA. 4 kA. 1. 50 . 1 . 2 . 3 . 4 .. 4. 51 Fully Rated Protective System . 1 .. 2 .. 3 .. 4 .. 1. 52 Coordination . 1 . 2 . 3 . 4 . 1. 53 Selective Protective System . 1 .. 2 .. 3 .. 4 .. 2. 54 Cascade Protective System . 1 .. 2 .. 3 .. 4 .. 3. 55 . 1 . 2 . 3 . 4 . 4. 56 CB Thermal-Magnetic . 1 Overload Bimetal Device Trip Overload Electromagnetic Device Trip 2 Overload Electromagnetic Device Trip Overload . Bimetal Device Trip 3 Overload Electromagnetic Device Trip 4 Overload Bimetal Device Trip 1. 57 CB Solid State . 1 . 2 .. 3 . 4 . 4. 58 CB . 1 80%. 2 100%. 3 125%. 4 150%. 3. 59 Fuse .. 1 100%. 2 200%. 3 300%. 4 400%. 3. 60 Ground Fault Protection.

5 1 800 A. 2 1000 A. 3 1200 A. 4 1400 A. 2. 61 Ground Fault Protection . 1 800 A. 2 1000 A. 3 1200 A. 4 1400 A. 3. 62 . 1 Short Time Inverse 2 Long Time Inverse 3 Very Inverse 4 Extremely Inverse 1. 63 Ground Fault Protection . 1 . 2 . 3 . 4 . 2. 64 Coordination Ground Fault Protection Ground Fault Protection .. 1 Zone Selective Interlock 2 Time Current Band Selective 3 Distance Selective 4 Voltage Band Selective 2. 65 100 kW 50 kVAR . 1 100 kVA. 2 112 kVA. 3 130 kVA. 4 150 kVA. 2. 66 100 kVA, Power Factor = lagging . 1 70 kW, 71 kVAR. 2 80 kW, 80 kVAR. 3 85 kW, 50 kVAR. 4 70 kW, 80 kVAR. 1. 67 800 kW, 500 kVAR Power Factor 1 2 3 4 4. 68 (Real Power). 1 GW. 2 kvar 3 MVA. 4 eV. 1. 69 . 1 . 2 . 3 . 4 . 2. 70 1 . 2 . 3 . 4 . 1. 71 . 1 . 2 . 3 . 4 . 3. 72 500 . 365 V. 1 30 kVA . 2 30 kW . 3 30 kVA . 4 30 kW . 4. 73 . 1 . 2 . 3 . 4 . 3. 74 . 1 . 2 . 3 . 4 . 4. 75 400/230 V, 3 4 , 1000 kW Power Factor = lagging.

6 1 1500 A. 2 1704 A. 3 1754 A. 4 1804 A. 4. 76 100 kW, Power Factor = 200 kW, Power Factor = lagging kVA . 1 300 kVA. 2 335 kVA. 3 365 kVA. 4 385 kVA. 2. 77 1000 kW, 800 kVAR Capacitor PF 1 371 kVAR. 2 451 kVAR. 3 471 kVAR. 4 491 kVAR. 3. 78 100 kW, Power Factor = 200 kW, Power Factor = lagging Power Factor . 1 lagging 2 lagging 3 lagging 4 lagging 3. 79 400/230 V, 3 4 , 120 kVA, = lagging 220 kVA, = lagging Heater 100 kW, = . kVA . 1 402 kVA. 2 424 kVA. 3 444 kVA. 4 454 kVA. 2. 80 400/230V, 3 4 , 120 kVA, = lagging 220 kVA, = lagging Heater 100 kW, = . Power Factor . 1 lagging 2 lagging 3 lagging 4 lagging 4. 81 400 kW, lagging . Capacitor PF lagging 1 114 kVAR. 2 154 kVAR. 3 184 kVAR. 4 214 kVAR. 4. 82 Capacitor 100 kVAR, 400V Delta . 1 114 A. 2 124 A. 3 134 A. 4 144 A. 4. 83 Capacitor 50 kVAR, 400V 380V . 1 48 kVAR. 2 45 kVAR. 3 43 kVAR. 4 40 kVAR. 2. 84 Capacitor 50 kVAR, 400V 420V . 1 51 kVAR. 2 53 kVAR.

7 3 55 kVAR. 4 57 kVAR. 3. 85 2000 kVA, 22kV/400-230V, Capacitor . 1 300 kVAR. 2 400 kVAR. 3 500 kVAR. 4 600 kVAR. 4. 86 60 kVA 380/220 V, 50 Hz .. 1 18 kVAR. 2 21 kVAR. 3 30 kVAR. 4 36 kVAR. 2. 87 Capacitor 100 kVAR, 400V Delta Xc . 1 . 2 . 3 . 4 . 1. 88 1000 kW 1200 kVAR . 1 1200 kVA. 2 1462 kVA. 3 1562 kVA. 4 1615 kVA. 3. 89 1000 kVA, Power Factor = lagging Power Factor . Capacitor . 1 527 kVAR. 2 714 kVAR. 3 820 kVAR. 4 938 kVAR. 2. 90 (Apparent Power). 1 GW. 2 kVAR. 3 MVA. 4 A. 3. 91 Capacitor 300 kVAR, 380V 416V . 1 250 kVAR. 2 320 kVAR. 3 360 kVAR. 4 410 kVAR. 3. 92. 1 . 2 . 3. 4. 3. 93 3 50 A . 400 V . 1. 2 20 kVAR. 3. 4 60 kVAR. 3. 94. 1 kVAR. 2 kVAR. 3 kVAR. 4 kVAR. 3. 95 (Reactive Power). 1 GW. 2 kVAR. 3 VA. 4 A. 2. 96 .. 1 Ring Main Unit 2 Load Break Switch 3 Automatic Transfer Switch 4 Safety Switch 3. 97 Transfer Switch . 1 - . 2 - . 3 - . 4 - . 1. 98 Transfer Switch . 1 Emergency Load 2 Non Emergency Load 3 Fire Protection System Load 4 Air-conditioning Load 1.

8 99 500 kVA . 20% .. 1 50 kVA. 2 100 kVA. 3 150 kVA. 4 200 kVA. 2. 100 kVA 100 kW, 380 V, PF = 1 80 kVA. 2 100 kVA. 3 125 kVA. 4 150 kVA. 3. 101 kVA 200 kW, 380 V, PF = 1 180 kVA. 2 200 kVA. 3 225 kVA. 4 250 kVA. 4. 102 (Real Power) 100 kVA . 3 4 , 380/220 V, 50 Hz, PF = 1 80 kW. 2 100 kW. 3 125 kW. 4 150 kW. 1. 103 40 kW PF = .. 1 30 kVA. 2 40 kVA. 3 50 kVA. 4 60 kVA. 3. 104 . 1 . 2 . 3 . 4 . 4. 105 Turbocharge . 1 . 2 . 3 . 4 . 3. 106 Droop Isochronous . 1 . 2 . 3 . 4 . 2. 107 Brushless Exciter . 1 Brush DC Rotor 2 Brush Exciter 3 Rotor DC . 4 . 2. 108 Exciter Separately Excited . 1 Permanent Magnet 2 Permanent Magnet 3 Excite DC . 4 . 1. 109 125 kVA, PF = 80% . 1 125 kW. 2 100 kW. 3 80 kW. 4 60 kW. 2. 110 100 kW, 400 V, PF = 80% . 1 100 kVA. 2 125 kVA. 3 150 kVA. 4 200 kVA. 2. 111 Voltage Dip . 1 . 2 . 3 . 4 Inductive 3. 112 Voltage Dip . 1 10%. 2 20%. 3 25%. 4 30%. 1. 113 Direct On Line (DOL) Starting KVA.

9 1 KVA (KVAn). 2 3 KVA (KVAn). 3 4 KVA (KVAn). 4 6 KVA (KVAn).. 4. 114 Autotransformer Tap 80% Starting KVA . 1 KVA (KVAn). 2 KVA (KVAn). 3 KVA (KVAn). 4 KVA (KVAn). 2. 115 Star-Delta Starting KVA . 1 2 KVA (KVAn). 2 4 KVA (KVAn). 3 5 KVA (KVAn). 4 6 KVA (KVAn). 1. 116 100 kVA, PF = 100% . 1 80 kW, PF = 80%. 2 100 kW, PF = 80%. 3 125 kW, PF = 80%. 4 150 kW, PF = 80%. 2. 117 100 kW, PF = 50% . 1 100 kW, PF = 80%. 2 125 kW, PF = 80%. 3 150 kW, PF = 80%. 4 175 kW, PF = 80%. 4. 118 100 kVA, PF = 80% 100 kW, PF =. 100% . 1 180 kW, PF = 80%. 2 200 kW, PF = 80%. 3 250 kW, PF = 80%. 4 300 kW, PF = 80%. 1. 119 100 kVA, PF = 80% 100 kW, PF = 100% . 1 150 kW, PF = 80%. 2 200 kW, PF = 80%. 3 250 kW, PF = 80%. 4 300 kW, PF = 80%. 2. 120 1000 kVA . 30% .. 1 200 kVA. 2 300 kVA. 3 400 kVA. 4 500 kVA. 2. 121 kW 1000 kVA, 400 V . 40% PF = 1 240 kW. 2 320 kW. 3 360 kW. 4 400 kW. 2. 122 Day Tank . 1 1 . 2 3 . 3 6 . 4 8.

10 4. 123 70 kW PF = . 50% .. 1 40 kVA. 2 50 kVA. 3 60 kVA. 4 70 kVA. 2. 124 2500 kW PF = . 20% . 1 575 kVA. 2 625 kVA. 3 718 kVA. 4 835 kVA. 2. 125 . 1 . 2 . 3 . 4 . 3. 126 . 1 . 2 . 3 . 4 . 4. 127 . 1 . 2 . 3 . 4 . 3. 128 .. 1 . 2 . 3 . 4 . 4. 129 .. 1 . 2 . 3 . 4 . 2. 130 .. 1 . 2 . 3 . 4 . 1. 131 . 1 Power Factor . 2 . 3 . 4 . 3. 132 . 1 . 2 . 3 . 4 . 4. 133 . 1 (Minimum Initial Investment). 2 (Maximum Service Continuity). 3 (Maximum Power Quality). 4 . 4. 134 . 1 ISO. 2 ANSI. 3 BS. 4 DIN. 1. 135 . 1 . 2 EN. 3 IEC. 4 . 1. 136 40 . 1 30 A. 2 50 A. 3 60 A. 4 70 A. 2. 137 . 1 . 2 . 3 200 A 200 A. 4 200A 200A 70. 200A. 3. 138 . 1 . 2 . 3 . 4 . 3. 139 . 1 380/220V. 2 400/230V. 3 415/240V. 4 430/250V. 2. 140 . 1 . 2 . 3 . 4 . 3. 141 (Substation) . 1 115 kV, 69 kV 22 kV 33 kV. 2 115 kV, 69 kV 12 kV 24 kV. 3 115 kV, 69 kV 33 kV. 4 115 kV, 69 kV 11 kV. 2. 142 (Substation) . 1 115 kV 22 kV 33 kV. 2 115 kV 12 kV.