ABB RELION REX640, Техническое руководство, Страница: 1420 / 1960

Figure 802: Example application configuration for real and reactive power
connection
Once a generator is identified faulty an indication is sent to PMS for starting the
backup generators, or to alter the power sharing between healthy generators, which
would allow the faulty generator to be offloaded and tripped. But in case the
system deteriorates, the function issues commands to shut down the engine or
de-excite the generator. It then issues the command to open the GCB. In case the
GCB tripping is unsuccessful, the function opens the neighboring tie breakers.
The network topology identification enables the function to locate a particular fault
in the network and trip the neighboring tie breakers of healthy generators in case a
network generator is faulty and is still not tripped.
The application configuration needs to ensure that in case any protection
functions like, over speed protection or over voltage protection or if
generator operates outside stability limit then a signal needs to be sent
to shut down the diesel engine and open the GCB.
This needs to be configured outside the DGMGAPC function block.
The function monitors the fuel rack position and excitation current of the generator
and rises an alarm in case they are deviating from the set operation mode.
7.5.7 Signals
Condition monitoring functions 1MRS759142 F
1420 REX640
Technical Manual