6F2S1915 (0.46)
GRZ200 (Soft 031 & 032)
- 195 -
(I
OCN
) for stage 1 with the setting [
OCN1
] and
Forward
can be set for the scheme switch [
OCN1-
Dir
]. Setting of the sensing angle (θ) is configured by the setting [
OCN1-Angle
] with the value
of θ in the range of 0–180°. Figure 2.7-2 shows an example of an angle and a characteristic
using the θ.
The operation decision of OCN uses the following equation:
𝐼
2
≥ 𝐼
𝑂𝐶𝑁
(2.7-1)
𝐼
2
× cos (φ − θ) ≥ 0
(2.7-2)
𝑉
2
≥ 𝑂𝐶𝑁_𝑉𝑝𝑜𝑙
(2.7-3)
where
I2
= Negative phase sequence current
V2
= Negative phase sequence voltage
−V2
= reference voltage (or polarizing voltage)
Φ
= lagging angle
θ
= OCN setting angle ([
OCN1-Angle
])
IOCN = Setting value of OCN ([
OCN1
] and the others])
OCN_Vpol = Setting value of the polarizing voltage ([
OCN1-Vpol
])
Note: The phase angle in the event of an internal fault is equal to the angle of the zero-
sequence impedance of the system; this value ranges approximately from 50° to
90°. The θ of OCN can be set from 0° to 180°. The minimum voltage necessary to
maintain directionality can be set from 0.5 to 180 V.
Figure 2.7-2
Examples of directional characteristic angle (θ)
Forward
Reverse
Forward
Reverse
Forward
Reverse
Forward
Reverse
Forward
Reverse
θ=0°
θ=30°
θ=90°
θ=100°
θ=170°
θ=30°
θ=90°
θ=100°
θ=170°
Vpol
Vpol
Vpol
Vpol
Vpol
A
ng
le
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 ...
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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 ...
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