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The utility of the past depended on customer calls to inform the operator of the state of the distribution network. The utility of the future will inform the customer about the network conditions immediately, while dramatically improving the return to service. |
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PRISM Real-Time OMS  PRISM
OMS can handle your most severe storm situations without drowning in a flood
of real-time SCADA updates. That's because it's built from the ground up
as a real-time system, using the same data model as our SCADA and distribution
management systems. This makes PRISM OMS unique among comprehensive outage
solutions. The PRISM Real-time Outage Management System (OMS) doesn't just
minimize network outages, it dramatically improves the network by accessing
and updating the same data as SCADA, real-time automation and real-time
analysis. These applications are presented as part of a unified operator
interface, reducing reaction time, simplifying training, and optimizing
data flow. PRISM OMS minimizes the cost of database maintenance Maintaining a network data model is complex, labor-intensive and costly, because the network changes continually. And since the network model is a core element in OMS, automatic restoration, reconfiguration, SCADA, real-time topology display, dispatcher load flow-based analysis and real-time reliability indices calculations, synchronization is not a luxury. It's a necessity for the sake of accuracy and consistency. This effort absorbs resources and lacks accuracy. PRISM Real-time OMS solves the problem by using the same model and the same data as SCADA and integrated DMS applications. The electrical network database and model is maintained using the utility’s existing GIS as the source database editor. Maximize Accuracy  Outage
solutions that employ separate OMS and DMS databases cannot keep the OMS
system contemporaneously informed of changes in real-time data. For instance,
when SCADA or feeder automation applications restore service by modifying
the network topology, time passes before the topology changes are registered
in the OMS system. This out-of-sync topology means that OMS fault predictions
will be inaccurate -- and that means crews get dispatched to the wrong locations.Since PRISM employs a single network model, and therefore shares the same topology among all application, PRIsm Real-Time OMS is updated immediately when changes occur. The topology is always up-to-date. Maximize Performance An OMS system shouldn't break down during storm situations -- the times when it is most needed. Unfortunately, most outage systems are based on GIS platforms whose graphics and relational database were not designed for real-time performance. As a result, these systems often suffer serious performance problems during emergencies and other periods of high activity. The electronic link that transfers SCADA data to the OMS is often based on ICCP or similar technology -- rather than a performance-oriented design. During storm scenarios, the aggregate volume of points reported from all sources can reach levels that overwhelm GIS-based graphical systems with relational databases. PRISM OMS is built to meet the performance demands of a SCADA/EMS/DMS -- both in its graphics and real-time data processing capability. Reduce Customer Call Volume and Outage Duration  PRISM
Real-Time OMS includes feeder automation applications that automatically
restore service to restorable sections of the feeder within seconds. This
not only minimizes calls, but benefits non-automated areas of the distribution
network, since crews can be dispatched to where they are truly needed. Since
the topology changes that result from automatic reconfiguration are known
immediately by the OMS, operators know almost instantaneously that power
has been restored. Automation minimizes the out-of-service portion within seconds, and the system knows it, so OMS makes more accurate outage predictions. This reduces restoration time for the network as a whole. Phased Implementation Optional automation and optimization applications augment the effectiveness of OMS, and are effective even without widespread installation of automation devices. As remotely controlled switches are installed the system will make use of them. In the meantime the system will make use of manual switches when creating switching plans. An effective tool is Optimal Switching, which can be added to OMS. PRISM applications may be added at any time in a phased implementation, since a common database is used. Systems that use separate databases require costly and time-consuming implementation to create the new database. Situational Awareness with Powerful Graphics The distribution and outage management systems share a common display/GUI. The same data model supports schematic and geographic network views. The integration of data and graphics, along with enhanced features, enhancee call center and dispatcher operations such as:
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Contents © 2008 Advanced Control Systems, Inc. All trademarks are the property of their respective owners. This site last updated: 17 July 2008. |