Schweitzer Engineering SEL-2032 - Figure 1.4 Integrated Substation Without a Communications Processor; Figure 1.5 System Integrated Using the SEL-2032 Communications Processor

1.6
SEL-2032 Communications Processor Instruction Manual Date Code 20120126
Introduction and Specifications
Integration With the SEL-2032
Figure 1.4 Integrated Substation Without a Communications Processor
In addition to the RTU connection, we add a substation PC for local HMI
functions and connect it via a separate multidrop network to the IEDs. We
provide time synchronization through an IRIG-B signal from a GPS clock. We
must connect the clock to each device with an IRIG-B input. This requires that
we run coaxial cable to all devices in a third multidrop connection.
After we apply the first three networks, we still have no connection for
engineering and analysis information. In this case we will assume that
engineering connections are to be made via a dial-up modem connection. We
then connect the modem to a port switch and connect the port switch to each
IED.
Next, we create a system that performs the same functions using the
SEL-2032 and a similar number of IEDs. In the example shown in Figure 1.5,
we use SEL IEDs, but you will see as we look more closely at the SEL-2032
that you can utilize many non-SEL IEDs with the SEL-2032.
Figure 1.5 System Integrated Using the SEL-2032 Communications
Processor
Port Switch
Modem
GPS Clock
Local HMI
SEL IED SEL IED SEL IED SEL IED
RTU
SEL-2032
RTU or
SCADA Master
Modem
GPS Clock
Local HMI
SEL IED SEL IED SEL IED SEL IED
Courtesy of NationalSwitchgear.com