Siemens SIPROTEC 7SJ62 Manual page 297

Multi-functional protective relay with local control

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Figure 2-107

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.

SIPROTEC, 7SJ62/64, Manual

C53000-G1140-C207-2, Release date 01.2008

2.18 Reverse-Power Protection Application with Flexible Protection Function

Example of a substation with autonomous generator supply