Retriever connects to external, real-time data
sources to import and display real-time data. Currently compatible data
source types include:
-
Flat-text data sources
having a flexible, user-defined format - Flat-text sources can reside on LANs and/or
WANs
-
ODBC data sources using SQL
-
PI System, a data aggregation and archival tool developed and marketed by
OSISoft
-
eDNA, a data aggregation and archival tool developed and marketed by
InStep software
Retriever can import the most recently available set of data from one or more of these data sources. The data retrieval can
either be initiated manually or set to occur at specified intervals. Furthermore, for PI
and eDNA data sources, Retriever can simulate the evolution of a system over time by accessing archived historical data over a prescribed period.
This feature, which will soon be extended to SQL and flat-text sources, allows the user to produce a movie of system
events for use in presentations, operator training, or post-mortem system analysis.
Data access has been optimized so that Retriever imports the real-time
data extremely efficiently. Retriever then maps the
data to the appropriate fields in an underlying topology model. Once the values have been mapped to components in the
model, Retriever's visualization engine depicts the data in the clear, dramatic, and colorful way PowerWorld customers have come to expect.
PowerWorld Retriever Topology Processing (TP) may also be used
to create a power flow case
from actual system parameters in near real-time or from a system state
captured in a data historian.
