Uema3 Kee 2007
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Transcript of Uema3 Kee 2007
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1
9, , 157 73 . : .
8 3
G1 20KV
G2 20KV
M/60VA
20/150KVX=22.5
M/60VA
20/150KVX=22.5
..
0
1 2
3
M/40VA
150/20KVX=22.5
4
=150
=150
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... G1. , . ( , ) 150 / .
. 50W / .
1 ( 1) PLC, SCADA. SCADA , (ON/OFF) , 1 2. :
(Transducer) (Transducer)
0 kV 0 V 0 0 V
150 kV 10 V 45 10 V
, MW, 1 2 :
( )1 212 1 212
3 sinVVPX
=
12 21P P= .
, MVAr, 1 2 :
( )21 1 212 1 212
3 cosV VVQX
=
, MVAr, 2 1 :
( )22 1 221 2 112
3 cosV VVQX
=
:
12 21lossesP P P= +
:
12 21lossesQ Q Q= +
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3
, D1A D2A (D1A=1, D2A=1) D1 D2 (D1=0, D2=0). .
2 :
1. (D1A=0, D2A=0). , relay RELAY B . relay, D1 D2 (D1=1, D2=1).
2. ( 12 50P MW 21 50P MW ). , , . , , +, relay RELAY B, . relay, D1 D2 (D1=1, D2=1).
2 4 .
1.
(D1=0, D2=0). , 2, + .
( 12 50P MW 21 50P MW ).
, 2, + .
2. .
+, 2, + .
-
4
. +, 2, + .
.
D1A=1 D2A=1
D1B=0 D2B=0
D1A=0 D2A=0
D1B=1 D2B=1
D1B=1 D2B=1
D1A=1 D2A=1
( G2)
( G2)
( G2)
( G2)
STEP7 (LAD FBD STL),
(. 2), , ( MW MVAr ), , SCADA. , PLC . 1.
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PLC
PLC
(-) (+)
(-) (+) I124.0 I124.1 I124.2 I124.3 PIW256
(+)(-) Q124.0 Q124.1 Q124.2 Q124.3 Q124.4 Q124.5
V I C V I C V I C V I CPIW258 PIW260 PIW262
I C I C I C I C
1
2
1
2
1
2
1
2
D1A D2AD1B D2B
REL
AY
+
+
2
1. PLC ( /
)
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6
VV
I124.0 I124.1 I124.2 I124.3 I124.4
I124.5 I124.6 I124.7 I125.0 I125.1
A B
PIW256 PIW258 PIW260 PIW262
Q124.0 Q124.1 Q124.3 Q124.4 Q124.5Q124.2
PS 307 2A
DC24V
VOLTAGESELECTOR
ON
OFF
CPU 312 CSIEMENS
SF
BAF
DC5V
FRCERUN
STOP
RUN-P
RUN
STOP
MRES
DI10/DO8 AI8R
ELA
Y
+
+
2
D1A D1B D2A D2B
1
1
2
2
2. PLC