特高壓輸電系統保護電驛標置與 ... - relay.org.tw

1 54.. a.. b.. CT PT (2) . (3) .. 3.. 1.. (1) .. (2) .. (3) . (4) . (5) . (6) . 1. 2.. (1) (1) .. (2) (2) . (3) . 2.. (1) . 24 . 55. 6.. 1.. 2.. 1.. 3. CT PT . (1) (A) (B).. 4.. (2) . 5.. (C) (D) .. 2.. CT .. 24 . 56.. 1. (3-phase faults).. If N1. a b Vf c Ia Ib I c z1. I1. F1.. Vf I 1 = I 3 f =. Z1. 2. (phase-A-to-ground faults). If N1. a Vf b c z1 I 1. F1. N2. Ia Ib Ic z2 I2. F2. N0. z0 I0. F0.. 3V f I 1 f = I 1 + I 2 + I 0 =. Z1 + Z 2 + Z 0. Z 1 : . Z 2 : . Z 0 : . 24 . 57.. 69kV .. 69kV . 2.. 1.. 3.. 24 . 58.. 2.. (3- . phase faults) (phase- . A-to-ground faults) .. 3.. 1.. 24 . 59. I 3 f = 14105A I 3 f = 11245A I 3 f = 5819A. I1 f = 2936 A I1 f = 2766 A I1 f = 2056A. I 3 f = 3704 A. I 1 f = 968 A. I 3 f = 7968 A I 3 f = 6897 A. I1 f = 1812 A I1 f = 1661 A. I3 f = 24088 A. I1 f = 3492 A. I 3 f = 3726 A I 3 f = 5884 A. I1 f = 1109 A I1 f = 1576 A. I3 f = 7935A I 3 f = 4970 A I 3 f = 4259A. I1 f = 1654A I1 f = 1155A I1 f = 1085A.

2 I 3 f = 5527 A. I1 f = 1319A. I 3 f = 5527 A. I 1 f = 1319 A.. 5.. 51Z . 1. 6. 345KV 161KV 69KV. GIS . 87B . 2. ANSI/IEEE Std 242-1986 6 . 7.. 3. GPT 8.. CT . 4. 10 MVA CT 20 . 87T 10% . 161KV .. 24 . 60. = . CT Ratio 2000/5. ( ) 3. 50/51 ( ) .. A. 51 Tap CT Ratio 400 / 5. 25 MVA 69 BUS . ( ~ ) = CT . 51 Tap 4. 4.. (69 KV ) 2. =. Z PS = 316 . 15 MVA. (69 KV ) 2. Z base = = . 100 MVA. Zps' 316. Z ( PU ) = = = pu Zbase Z PS = = pu 100 MVA. I base = = A. 3 69 KV. 1. I 3 f = I base = 1690 A. Z PS. 5. 51 Level . I 3 f 1690. CT Ratio 400/5. = . Tap 4.. SPAJ140C. (ABB) . ( ) 51 Level 1. 6 50 . 25 MVA . I FL1 = = A 50 10~15 . 3 69 KV CT Ratio CT (margin) A. (10 ~ 15 ) = 35 A. 50% 400 / 5. = 50 35A. CT Ratio 400/5 ( ) (87T) . 2. 1. CA ABB . 25 MVA 2.. I FL 2 = A. 3 KV I FL1 = I FL 2 = . 24 . 61. 3.. % M%+ %. IH = = A. 400 / 5 CA 50 35. 3 HU,HU-1,HU-4,BDD 30 15. IL = = A HU,HU-1,HU-4,BDD 35 20. 2000 / 5. IL CA-26,RADSB --- 10. = = A.

3 IH 4.. TL 10. = =2. TH 5 1.. CA ABB Tap 5 (1) CB6 . 6 7 8 9 10 . Tap A. Ry3 . 5 TH = 5 B. Ry2, . Tap Ry1 . 10 TL = 10 (2) CB4 CB5 . 87T CA ABB . 5/10 Lever = A. Ry2 . 5. Mismatch B. Ry1 .. (3) .. TR y 2 = TR y 3 + .. T R y 1 = T R y 2 + 0. 3 . M= IL/IH TL/TH /. S 100% 2.. IH ,IL (1) 51Ry .. TH ,TL . (30 ) . S IL/IH TL/TH .. M% = / I base Z1S = = = pu I 3 f 5819. 100%. = M%+ 100 MVA. ZT r = = pu 15 MVA. %=35% . 1. I 3 f (Tr ) = = 1305 A. + 24 . 62.. 1305 (4) C S/S #630 D S/S #630 Fault 51: 4 = 30 . 400 / 5 D S/S C S/S. L= #630 D S/S #630 . T 4 CT Ratio=600/5. 51 : SPAJ 140C ( ABB) = =. L T 5. 51:SPAJ140C: = , L (2) D S/S #730 #740 Fault CT Ra- T 51N:SPAJ140C: = , tio=400/5 L 5819 2056. 51 : 4 = 18 51N : = 51 . 400 / 5 400 / 5. (5) C S/S #630 Fault CT Ra- Lever= tio=600/5 . 51:SPAJ140 51N:SPAJ140 11245 2766. 51 : 5 = 51N : = 46 . (15 ) (9 ) 600 / 5 600 / 5. Lever= (3) D S/S #630 CT Ratio=600/5 51:SPAJ140 51N:SPAJ140 . (26 ) (27 ).

4 D S/S #630 . (25 + 25) MVA (6) C S/S #620 CT Ratio=1000/5 . = 628 A CT Ratio=600/5. 3 69KV . 628. 51, Ta p = = A, 51, Ta p = 600 / 5 C S/S #620 . 5819 2056 (25 + 25 + 25) MVA. 51 : 5 = 51N : = 34 = 941A . 600 / 5 600 / 5. 3 69 KV. 15 +18 9 +18 . CT Ratio=1000/5. =33 ( ) =27 ( ). 941. Lever= Lever= 51, Ta p = = A, 51, Ta p = 1000 / 5. 24 . 63. 11245 2766 A P/S #610 D S/S. 51 : 5 = 11 51N : = 28 . 1000 / 5 1000 / 5. #610 CT Ra- 26 +18 27 +18 . tio=1200/5. =44 ( ) =45 ( ). T 5. Lever= Lever= 51:SPAJ140C: = , L T (7) B S/S #620 C S/S #620 Fault 51N:SPAJ140C: = , L C S/S D S/S . B S/S #620 D S/S #620 . (11) A. CT Ratio=1000/5. P/S #610 . T 5. 51:SPAJ140C: = , 50+21 . L 50+21 . T 51N:SPAJ140C: = , (1)50:CHC12A=. L 25 MVA 4 1200. = A. 3 69 KV 5. (8) B S/S #620 Fault CT Ra- tio=1000/5 50, Ta p = 14105 2936. 51 : 5 = 14 51N : = 29 . 1000 / 5 1000 / 5 (2) 21:CEY51A(GE) . Lever= ~8 . 51:SPAJ140 51N:SPAJ140 (39 ) (45 ) 240. Z set = ( + ).

5 600. (9) B S/S #610 CT Ratio=1200/5 80% = 80 . Z RY =. B S/S #610 (. cos 80 60 ) = . (25 + 25 + 25 + 25) MVA 21:CEY51A : Z min = . = 1255 A. 3 69 KV Z min %Ta p = = = 94%. Z RY CT Ratio=1200/5. 1255. 51, Ta p = = A, 51, Ta p = 1200 / 5 . 14105 2936. 51 : 5 = 12 51N : = 12 . 1200 / 5 1200 / 5. 1.. 39 +18 45 +18 . (1) Fault 1. =57 ( ) =63 ( ).. Lever= Lever= A. BUS BUS1 . 85 Ry . (10) A P/S #610 B S/S #610 Fault CB1 CB2 . C S/S D S/S . 85 Ry . 24 . 64. B. 85 Ry . 85 Ry CB9 CB10 . 67/67N Ry 85 Ry . a. CB1 B.. CB2 CB4 CB6 CB8 85 Ry . CB10 67/67N Ry . b. CB3 a. CB10 . CB5 CB7 CB9 CB9 CB7 CB5 CB3 . (2) Fault 2 CB1 . b. CB8 CB6 . A. BUS BUS4 CB4 CB2 .. 24 . 65. I3 f = 14105 A. I1 f = 2936 A. I 3 f = 11245 A. I1 f = 2276 A. I 3 f = 5819 A. I 1 f = 2025 A.. SPAJ140C(ABB) . 24 . 66.. 2. 1 2 25 3 MVA. = A. 3 69 KV. = * . CT Ration=1200/5. 3. 85 HCB-1 IL = = A. (1) 85 HCB-1 1200. 5. A. I 3 T I L Ta p R1 C . I 3 T I L Ta p R1 B 7421 + 3921 1.

6 I 3 = = A. B. Ta p R1 A B 2 1200. 5. I1 g Ta p R0 G . I1 g Ta p R0 H 1748 + 1009 1. I1 g = = A. C. Ta p R1 C 2 1200. 5. I1 g Ta p R0 G . Ta p R1 C. I1 g T Ta p R0 H. I 3 T I L Ta p R1 C. I L : . T = A.. Ta p : T = 5. Ta p R1 C I 1 g T. I 3 : . 5 = . Ta p R0 G.. I 1 g : . 85:HCB-1(ABB) =5/C/G.. (2) 85 HCB-1 (G S/S~H. S/S Fault 1). 24 . 67. 1 . 2 . 24 . 68. I 3 f = 7935 A. I1 f = 1654 A. I 3 f = 7968 A. I1 f = 1812 A. I 3 f = 3726 A. I1 f = 1109 A. I 3 f = 4970 A. I 1 f = 1155 A. I 3 f = 3704 A I 3 f = 7421A. I 1 f = 968 A I1 f = 1748 A. I 3 = 5884 A. I 1 . f = 1576 A. I 3 f = 6897A I3 f = 3921A. f I1 f = 1661A I1 f = 1009A. I 3 f = 4259 A. I 1 f = 1085 A.. 2.. 1.. 24 . 69. I3 f = 9759A I 3 f = 9759 A. I1 f = 2115 A I1 f = 2115 A. I 3 = 3253 A. f I3 f = 3253A. I1 = 705 A. f I1 f = 705 A. I 3 f = 5527 A I 3 f = 5527 A. I1 f = 1319 A I 1 f = 1319 A.. [1] . 88 . [2] . Applied Protecttive Relaying . [3] IEEE, Recommended Practice for Protection and Coordination of Industrial and Commercial Power Systems.

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