1.2
SEL-2032 Communications Processor Instruction Manual Date Code 20120126
Introduction and Specifications
Substation Integration
Intelligent
Port Switch
Flexible communications parameters make the SEL-2032 a great choice for
almost any port switching application. The multitasking/multiuser capability
and data handling capability make the SEL-2032 more of a self-contained
network hub than a port switch, but it is still an economical choice for port
switching applications. The time synchronization capabilities of the SEL-2032
add to its value in this application.
Time
Synchronization
Source
The SEL-2032 transmits a demodulated IRIG-B signal on Ports 1–16. You can
connect this signal to SEL and non-SEL devices. The SEL-2810 multiplexes
the IRIG-B signal on the single fiber pair along with other communications.
The source for the transmitted IRIG-B signal is either the IRIG-B input to the
SEL-2032 or the SEL-2032 internal clock. You can time synchronize the
SEL-2032 clock in several different ways.
You can set the SEL-2032 clock using the TIME and DATE commands. A
battery maintains the clock operation during loss of power to the SEL-2032.
You can also synchronize the SEL-2032 via a modulated or demodulated
IRIG-B signal input on the BNC connector labeled IRIG-B IN. There is also a
jumper that allows you to configure the IRIG-B pins on Port 15 as a
demodulated IRIG-B input (see Jumper Settings on page 2.1).
You can also use time synchronization through serial protocols such as DNP3
and hardware protocol cards (see Section 9: Protocols) or the instruction
manual for your protocol card for more information.
Substation Integration
The term integration is defined as the process of blending disparate parts into
a unified whole. In a substation environment this means providing
communications pathways so that the individual IEDs (Intelligent Electronic
Devices) function as a single substation monitoring, control, protection, and
automation system.
Since SEL introduced the first microprocessor-based protective relay as a
standard product to substation engineers, devices within the substation have
become more and more intelligent. Substation IEDs include protective relays,
battery chargers, equipment monitors, weather stations, and many other
devices. IEDs now perform multiple functions and can contain measurement
data, status, control, settings, historical information, and alarms. Each IED
often performs the functions of several devices within a substation, but for a
portion of the substation associated with a single bay or circuit breaker. A
function that is performed by many devices each working on a small part of
the whole is called a distributed function.
Substation integration is the process of providing communication and other
connections between IEDs to take advantage of distributed functions that the
IEDs offer. The paragraphs below describe distributed functions that are
common in integrated substations. Figure 1.1 is a diagram of a typical
integrated substation. The IEDs are integrated into a system by the SEL-2032.
Courtesy of NationalSwitchgear.com
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