ABB Relion 670 Series Applications Manual page 36

Section 2
Application
PTP or
GPS/IRIG-B
PMU
IEC140000114 V2 EN-US
Figure 2:
A Wide Area Monitoring System collects, stores, transmits and provides ways to analyze critical
data from key points across the power networks and over large geographical areas. The
architecture of the WAMS can provide a scalable solution, from small installations for data
collection and basic visualization (PDC) to larger systems with intelligent monitoring using wide
area applications. The Wide Area Monitoring applications are designed to detect abnormal system
conditions and evaluate large area disturbances in order to preserve system integrity and
maintain acceptable power system performance.
The WAMS is configured in a way to acquire synchrophasor data from several PMUs. Based on the
data collected in the PDCs, WAMS is able to present the state of the grid to the power system
operator, and to provide monitoring of the power system based on real-time measurements and
the results of on-line applications. In addition, the data available from PDCs enables off-line
analysis of the power system for post-disturbance assessments. It is possible to communicate the
PMU measurements and the results of the advanced applications to SCADA/EMS systems as a way
to improve the supervision of the system, providing the operator with a clear indication how likely
the system is to collapse, thus giving the possibility to react in time.
Forcing of binary inputs and outputs is a convenient way to test wiring in substations as well as
testing configuration logic in the IEDs. Basically it means that all binary inputs and outputs on the
IED I/O modules (BOM, BIM, IOM & SOM) can be forced to arbitrary values.
Central Account Management is an authentication infrastructure that offers a secure solution for
enforcing access control to IEDs and other systems within a substation. This incorporates
management of user accounts, roles and certificates and the distribution of such, a procedure
completely transparent to the user.
The Flexible Product Naming allows the customer to use an IED-vendor independent IEC 61850
model of the IED. This customer model will be exposed in all IEC 61850 communication, but all
other aspects of the IED will remain unchanged (e.g., names on the local HMI and names in the
tools). This offers significant flexibility to adapt the IED to the customers' system and standard
solution.
30
Visualization
(Applications)
Phasor Data Concentrator
PDC
Gateway to other Utilities
TCP/IP communication network
PMU protocol IEEE C37.118
Router Router
PTP or PTP or
GPS/IRIG-B GPS/IRIG-B
PMU PMU
Substation 1 Substation 2
Wide Area Monitoring System architecture — overview
© Copyright 2017 Hitachi Power Grids. All rights reserved
Interface to
SCADA / EMS
Data Storage and Event
Driven Archiving
Router
PTP or PTP or
GPS/IRIG-B GPS/IRIG-B
PMU PMU
Substation 3
IEC140000114-2-en.vsd
1MRK 511 407-UUS Rev. J
Router
PTP or
GPS/IRIG-B
PMU
Substation N
Phasor measurement unit RES670
Application manual