Application; General Ied Application - ABB Relion 670 Series Applications Manual

1MRK 511 407-UUS Rev. J
Section 2
2.1

General IED application

RES670 is a Phasor Measurement Unit (PMU) that provides power system AC voltages and
currents as phasors for all voltage levels in power system networks. Phasors are provided as real
and imaginary or as magnitude and phase angle. The reference for the phase angle may be either a
PTP time synchronization source or the NavStar Global Positioning System - GPS, both supplying
highly accurate time and date. The measured data in each PMU is time synchronized via one of the
mentioned time synchronization sources - with an accuracy of one microsecond - and transmitted
to Phasor Data Concentrators (every 100 milliseconds, for example). The accurate time tagging of
measurements taken at different geographical locations makes it possible to derive the
synchronized phasor quantities (synchrophasors). Based on synchrophasors, a number of power
system applications are available.
The PMUs are installed at substation level, and can be connected directly to the current and
voltage transformers within the substations. Each RES670 may be fitted with different options for
time synchronization: PTP via the Ethernet network, via the GPS system with an own antenna for
the RES670, or via the IRIG-B signal received from an external GPS-based clock. It is also possible
to have a combination of the three to provide time synchronization redundancy for the PMU.
RES670 streams out its synchrophasor data according to IEEE C37.118 and/or IEEE 1344 standards
for synchrophasor data streaming and with user-selectable reporting rates. RES670 supports
reporting rates of 10, 25, 50, 100, and 200 frames per second for 50Hz system (or 10, 12, 15, 30, 60,
120, and 240 frames per second for 60Hz system). Each RES670 can communicate its
synchrophasor data to up to eight independent clients over TCP and/or six independent UDP
channels (unicast/multicast), simultaneously. More information is available in RES670 Application
Manual under
In addition to the synchrophasor communication standard (IEEE 1344, IEEE C37.118), RES670 is
also compliant to IEC 61850-8-1 standard for integration to substation automation systems and
exchange of GOOSE messages, when necessary. RES670 is able to communicate over IEC 62439-3
PRP for redundant station bus communication for both IEEE C37.118 and IEC 61850-8-1,
simultaneously.
Figure 2
PMUs are the building blocks for a WAMS. The architecture of a WAMS consists of the following
main components:
• PMU Phasor Measurement Unit, including all accessories for time synchronization
• TCP/IP and/or UDP/IP communication network infra-structure
• PDC Phasor Data Concentrator, including wide area applications
Phasor measurement unit RES670
Application manual

Application

Wide Area Measurement
shows an example of a system architecture for a Wide Area Monitoring System (WAMS).
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System. section.
Section 2
Application
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