Functions
2.18 Reverse-Power Protection Application with Flexible Protection Function
SIPROTEC, 7SJ62/64, Manual
C53000-G1140-C207-2, Release date 01.2008
297
Figure 2-107 Example of a substation with autonomous generator supply
Substation Layout
The control system is on the high-voltage side linked via a 110 kV line to the power system of the power supply
company. The circuit breaker CB1 is part of the power system of the power supply company. Disconnection
from the control system of the power supply company's power system is effected by the load-isolator. The trans-
former with a transformation ratio of 10:1 transforms the voltage level to 11 kV. The transformer, the generator
and the two feeders are linked via a busbar at the low-voltage side. Circuit breakers CB2 to CB5 separate con-
sumer and operational equipment from the busbar.
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