Выбор ТТ для работы с устройствами siprotec
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Siemens AG 2007
SIPROTEC
ENERGY MANAGMENT ..
Page 2 Aug-07
Siemens AG 2007
Power Transmission and Distribution Energy Automation
Page 3 Aug-07
Siemens AG 2007
Power Transmission and Distribution Energy Automation
Page 4 Aug-07
Siemens AG 2007
Power Transmission and Distribution Energy Automation
,
,
,
,
,
( 75C)
/
Page 5 Aug-07
Siemens AG 2007
Power Transmission and Distribution Energy Automation
:
( )
Is
Ip = Ip
I0
. N1 N2
Rba
Rct Ip Is
I0
L0 U2 E
Ip
,
N1
:
N2
Page 6 Aug-07
Siemens AG 2007
Power Transmission and Distribution Energy Automation
:
Page 7 Aug-07
Siemens AG 2007
Power Transmission and Distribution Energy Automation
P (IEC60044-1)
(
.
.. ..
% %
1 60 1,8 5 5P
3 10 10P
( )
: 5 P 20 30 VA
(ALFN n)
P =
% ALFN IN
Page 8 Aug-07
Siemens AG 2007
Power Transmission and Distribution Energy Automation
ALF
( )
ALF=
ALF= Pb =
PT = (=Isn2 x RCT)
Ptotal =
TTPP`
TTP
bP
ALFALF`
)PP(ALF)PP`(ALF` TbT
:
, :
ALF
Page 9 Aug-07
Siemens AG 2007
Power Transmission and Distribution Energy Automation
ALF
,
() .
. -1,5
-1
-0,5
0
0,5
1
1,5
kmax
s
I
i ALF'I2 n
dt(t)i)R(R
dt(t)u(t)
sBct
h
-1,5
-1
-0,5
0
0,5
1
1,5
+max
-max
max
Page 10 Aug-07
Siemens AG 2007
Power Transmission and Distribution Energy Automation
I/I
10
5
0 5 10 15 Iy/I
10P10, 15 VA
< 15 VA
= 15 VA
> 15 VA
Fi = 10%
:
Page 11 Aug-07
Siemens AG 2007
Power Transmission and Distribution Energy Automation
: :
10 12,5 15 20 25 30 40 50 60 75 A ( )
: IN,G = 7330 A : 8000 A
1 A 5 A ( 2 A )
5 A: : ; : ( Z = S/(I)
2 = 15 VA/25 A2 = 0,6 O)
1A: : ( Z = S,/(I)2
= 15 VA/1 A2 = 15 O); : ( )
: 1A
Page 12 Aug-07
Siemens AG 2007
Power Transmission and Distribution Energy Automation
E = ()
IP =
Is =
I0 =
RCt = ..-
RBC= -.
US = . . ()
TP = .
(. )
: 1500/1A, 5P20, 50VA, Rct = 3
I0
E
RBC
RCt Ip Is
I0
L0 US E
Ip
,
TP
E = Is(Rct + Rba)
:
Page 13 Aug-07
Siemens AG 2007
Power Transmission and Distribution Energy Automation
P
, ,
(5P20 5% 20- )
( )
:
,
.
.
. :
( : 80%)
(
,
)
Page 14 Aug-07
Siemens AG 2007
Power Transmission and Distribution Energy Automation
Ip [A]
IS [A]
I0 [A]
Page 15 Aug-07
Siemens AG 2007
Power Transmission and Distribution Energy Automation
][st
])[( Ati
][st
snp iKi ,/])[( Ati
:
60044-1: AC
, ..:
Page 16 Aug-07
Siemens AG 2007
Power Transmission and Distribution Energy Automation
45
Page 17 Aug-07
Siemens AG 2007
Power Transmission and Distribution Energy Automation
1/3
. G1
G G
6,9 kV
69 kV
30
G1 G2
12 MVA
5,6 MVA
Page 18 Aug-07
Siemens AG 2007
Power Transmission and Distribution Energy Automation
2/3
Page 19 Aug-07
Siemens AG 2007
Power Transmission and Distribution Energy Automation
3/3
0,18
0,15
:
1 0,15 0,25
( )
Page 20 Aug-07
Siemens AG 2007
Power Transmission and Distribution Energy Automation
(Ktd) ( )).
(ALF):
pN
SSCtd
I
I KALF
(ALFN):
ALF RR
R R ALF
CtBN
CtBCN
:
ALF(`) -
ALFN () -
Ktd () -
ISSC (I ) -
IpN (I ) -
RCt (R) - 75C
RBC (R`=R+ R) ( + )
RBN (R) : SIP-2008
Page 21 Aug-07
Siemens AG 2007
Power Transmission and Distribution Energy Automation
U
(DC )
(DC
Page 22 Aug-07
Siemens AG 2007
Power Transmission and Distribution Energy Automation
.
. .
TN :
freeNtd t T1K
max AC
DC/ACmax
-0,5
0
0,5
1
1,5
2
2,5
0
2
4
6
8
10
12
kmax
s
I
i
max
tfrei
10ms
Page 23 Aug-07
Siemens AG 2007
Power Transmission and Distribution Energy Automation
DC
, ,
- DC- ()
Page 24 Aug-07
Siemens AG 2007
Power Transmission and Distribution Energy Automation
Ktd
BDC
/
BAC
Ktd = 1 + S S
P S P
S
Ktd = BDC BAC
n' > IF
ICT
,
DC-
n' > Ktd IF
ICT
DC
: p = S =
Page 25 Aug-07
Siemens AG 2007
Power Transmission and Distribution Energy Automation
Ktd
1.
:
2. DC
, ,
Ktd
3. :
Ktd i
DC-.
ISSC = KSSC * Ipn KSSC = ISSC / Ipn
ISSC = KSSC /Ktd* Ipn
KSSC = Ktd * ISSC / Ipn
4. ,
T .
Ktd
Page 26 Aug-07
Siemens AG 2007
Power Transmission and Distribution Energy Automation
DC-
tM =
P =
S = CT
(5 s)
0,00
5,00
10,00
15,00
20,00
25,00
30,00
0 20 40 60 80 100 120 140 160 180
tM =
tM = 40 ms
tM = 10 ms
tM = 20 ms
tM = 60 ms
P ms
Ktd
Ktd = 1 + P S
SP P
-tM
e S
-tM
- e
Page 27 Aug-07
Siemens AG 2007
Power Transmission and Distribution Energy Automation
tfree =
tfree = 30 ms
tfree = 20 ms
tfree = 10 ms
0
5
10
15
0 0.05 0.1 0.15 0.2TN [s]
Ktd
.
.
7UT612
tfree = 8 ms
td
K
ALF'pnI
extmax,k,I
tfree = ~8 ms Ktd= 4
Page 28 Aug-07
Siemens AG 2007
Power Transmission and Distribution Energy Automation
, 1
,
1 ,
,
,
.
,
.
1
Page 29 Aug-07
Siemens AG 2007
Power Transmission and Distribution Energy Automation
,
, I >>.
,
.
,
.
nI
IALF' 20
Page 30 Aug-07
Siemens AG 2007
Power Transmission and Distribution Energy Automation
1/4
xd = ..
uk = - %
Rrelay = 0.1 , ( 0.1 VA)
4.5kA
2.1 kA
( ) l= 40m
A= 4mm2 l= 100m
A= 4mm2
l= 60m
A= 4mm2
7UT633 7UM62
-T (G S2)
6000/1A
5P20
20 VA
Rct = 18
-T (T LV1)
6000/1A
5P20
20 VA
Rct = 18
-T1
120MVA
110/10.5 kV
50 Hz
uk = 14%
-G1
120 MVA
10.5 kV,
50 Hz
xd= 0.16
-T (T HV)
1200/5A
5P20
50 VA
Rct = 0.96
47.1kA
G
3~
45.4kA
132 kV, 50Hz
:
Page 31 Aug-07
Siemens AG 2007
Power Transmission and Distribution Energy Automation
2/4
Ktd = 5 ( )
0.625 0.1mm 4
m 60m
mm 0.01752
0.1A
l2RRR
2
2
RelayLeadBC
ALF = 37.8
ALF = 40.8
37.8 < 40.8
40.8 0.625 18
20 1820
RR
RRALFALF
BCCt
BNCtN
201A
VA 20
I
SR
22sn
nBN
c = .
: c = 1.1
:
:
37.86000A
A 4513635
I
IKALF
pn
fault) (ext.max scctd
A 45363 0.16 kV 10.5 3
kVA 120000 1.1
x U 3
S c I
' ' d NG
NG ) (. max scc
Page 32 Aug-07
Siemens AG 2007
Power Transmission and Distribution Energy Automation
3/4
Ktd = 3 ( )
0.45 0.1mm 4
m 40m
mm 0.01752
0.1A
l2RRR
2
2
RelayLeadBC
ALF = 23.6
ALF = 41.2
23.6 < 41.2
41.2 0.45 18
20 1820
RR
RRALFALF
BCCt