6F2S1915 (0.46)
GRZ200 (Soft 031 & 032)
- 320 -
Fault F
TT
t
FL
t
Distance GF
TT
t
Line GH
t
Bus G
Bus H
Line 1
TT
t
Line 2
TT
t
Source
Load/Source
If
IL
G’
H’
Figure 2.23-1 Relationship between fault location and local IED in parallel line
I
α
=
2I
a
− I
b
– I
c
3
(2.23-1)
I
α
′ =
2I
a
− I
b
– I
c
3
−
2I
La
− I
Lb
– I
Lc
3
(2.23-2)
χ =
Im(V
a
・
I
α
") × L
{Im(R
1
∙ I
α
∙ I
α
" + R
0
∙ I
0s
∙ I
α
") + Re(X
1
∙ I
α
∙ I
α
" + X
0
∙ I
0s
∙ I
α
")} × K
a
(2.23-3)
where,
Vα
:
Fault voltage (=Va0)
Iα
:
Fault current
Iα’
:
Current change before and after fault occurrence
Iα”:
Complex conjugate of Iα’
Ia, Ib, Ic
:
Fault currents in phase-‘a’, phase-‘b’, and phase-‘c’
ILa, ILb, ILc
:
Load currents in phase-‘a’, phase-‘b’, and phase-‘c’
I0s
:
Zero-sequence current on the local line i.e. ‘Line 1’
R1
:
Resistance component of positive-sequence self-impedance (Z1), [
FL_R1
]
X1
:
Reactance component of positive-sequence self-impedance (Z1), [
FL_X1
]
R0
:
Resistance component of zero-sequence self-impedance (Z0), [
FL_R0
]
X0
:
Reactance component of zero-sequence self-impedance (Z0), [
FL_X0
]
Ka
:
Compensation factor for phase-‘a’ in an unbalanced 3-phase line,
Содержание GR 200 Series
Страница 1047: ...6F2S1915 0 46 GRZ200 Soft 031 032 1026 Figure 8 3 4 Screen shot from GR TIEMS ...
Страница 1354: ...6F2S1915 0 46 GRZ200 Soft 031 032 1333 Appendix 1 Signal list for common function ...
Страница 1369: ...6F2S1915 0 46 GRZ200 Soft 031 032 1348 Unit mm Panel cut out for 1 2 case size Figure 2 2 3 Panel cutout figure 1 2 size case ...
Страница 1410: ...6F2S1915 0 46 GRZ200 Soft 031 032 1389 This page is intentionally blank ...
Страница 1480: ...6F2S1915 0 46 GRZ200 Soft 031 032 1459 Appendix 6 Ordering ...
Страница 1497: ...6F2S1915 0 46 GRZ200 Soft 031 032 1476 Appendix 7 Technical data ...
Страница 1518: ...6F2S1915 0 46 GRZ200 Soft 031 032 1497 Appendix 8 Manufacture setting ...
Страница 1520: ...6F2S1915 0 46 GRZ200 Soft 031 032 1499 Appendix 9 Matrix between VCT terminals and relay applications ...
Страница 1523: ...6F2S1915 0 46 GRZ200 Soft 031 032 1502 Appendix 10 CT requirement ...
Страница 1531: ...6F2S1915 0 46 GRZ200 Soft 031 032 1510 Appendix 12 Engineering exercise ...
Страница 1563: ......