NOTE the Frequently Asked Questions section below
Some specific points on Transmission Atlas™ products and PowerWorld Simulator
- In addition to their extraordinary analytic firepower, Transmission
Atlas™ products and PowerWorld Simulator offer a unique animated graphic
interface with detail presentation and contour mapping capabilities
that make illustration and presentation of power flow to non-engineers
and decision makers both easy and effective. A thorough analysis of
this capability is available in the December 2002 issue of "Electric
Power and Light".
- Developed using modern object-oriented programming languages, PowerWorld
Simulator and Transmission Atlas are much more flexible and responsive
than older FORTRAN based Programs. Accordingly, customization and product
upgrades are less expensive over time.
- PowerWorld/Transmission Atlas continue to add new features, and as
this range of capabilities grows, PowerWorld/Transmission Atlas is on
the way to becoming one of the most versatile Power Analysis Platforms.
- While initial sales were seen in the Eastern Interconnect and ERCOT,
PowerWorld Simulator and Transmission Atlas is making inroads within
the Western Interconnect, including extensive work with the Bonneville
Power Administration (where it is used for management, analysis and
planning) and the California Energy Commission specifically in the area
of Strategic Renewable Energy Analysis.
- Successive generations of PowerWorld Simulator have been developed
as the result of feedback from strategic customers within the power regions
and reflects the challenges that specific region members as well as transmission
managers and power traders, across the country, are facing and will face
in the future.
- While PowerWorld Simulator can integrate and inform (both read and write) power flow cases built by or used by its competitors, the reverse is not often the case. Accordingly, PowerWorld and Transmission Atlas fit seamlessly with existing legacy software, both in house or when working with strategic partners.
- Transmission Atlas continues to add information and detail to its power flow structure, in direct response to customer request, most recently in the areas of generation and congestion analysis. In addition, Transmission Atlas has been adding new ISO configurations as they are developed.
Frequently Asked Questions:
What is the Transmission Atlas?
The Transmission Atlas is a map product meant for use with PowerWorld
Simulator or Viewer. It began with Transmission Atlas 2001 based upon the cases found
in the annual Federal Energy Regulatory Commission (FERC) 715 filings and has been expanded substantially as we continue to improve and add to the Transmission Atlas.
It still includes both substation and bus maps. However now we have the entire Eastern Interconnect combined into a single oneline map of North America. We also have onelines for the ERCOT and WECC regions. The onelines are also now have everything in the power flow cases mapped down to the lowes kV level.
We now have Transmission Atlas-PJM Monthly Network Model which is a bus oneline based on the PJM Monthly Network Model cases available to members of PJM. This case is particularly useful in LMP analysis as it has a cross-reference to the PJM prices published by PJM. Also available is Transmission Atlas-CAISO - CAISO CRR FNM cases for power markets.
Where do you get the information used to build
The Transmission Atlas data is based on the case data that is already
available in the FERC 715 filings and location data approximated from
maps. While geographical accuracy is important, the purpose of the maps
is to visualize the underlying power-flow data and electrical connectivity.
In some instances, the substations or buses are placed on the diagram
based on geographical proximity gleaned from sources without exact latitude
or longitude information. As we move forward with new versions, Energy
Visuals is enhancing the product with more applicable power flow case
Can I use the Transmission Atlas for consulting
Yes. The diagrams can be used for power-flow visualization and presentation.
The underlying power-flow cases can be used for power system analysis.
Can I add to the diagrams?
If you are using the Transmission Atlas in conjunction with PowerWorld
Simulator you can adjust generation and transmission, among other variables
as needed for each project. Just like any Simulator one-line, the Transmission
Atlas diagrams are completely modifiable to suit your modeling needs.
PowerWorld Viewer however, is a freeware program that does not allow changes
to be made to the displays.
What kind of detail is included?
The Transmission Atlas includes mapping of all the objects contained in the power flow cases for the TA-Eastern based on MMWG cases, ERCOT and WECC. Substations, transmission
lines and load flow pie charts are included.
What are the geographic attributes of the onelines with Transmission Atlas?
Our primary emphasis is on being electrically correct; however we give a great deal of attention to the geographic placement of objects:
- Significant efforts are put forth to place each object as near as possible to its actual location;
- We do not claim to be geographically correct in all instances, in dense areas for example we must move objects some so they don't overlap and can be seen on the oneline;
- We use the a number of means of establishing the location to place objects, including printed maps, locations of cities, intersections, etc. - this all leads to good geographic placement of even the lower kV but not precise;
- Generators contained in the power flow cases are mapped as well;
- Much nicer bus diagrams, including:
- adjusted font sizes for better clarity as well as other visual improvements;
- better presentation of city bus diagrams;
- improved placement of buses within substations.
- MMWG (Multiregional Modeling Working Group) data is being being used
for ISO-NE, NYISO, MAPP, ECAR, SERC, MAIN and MAAC. The benefits of this data are:
- it provides for better representation of areas around it as well;
- it will provide for better graphical representation of what effects will
happen when a change occurs even on long distance transfers
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All Rights Reserved.
Transmission Atlas™ is a Trademark and FirstRate® is a registered Trademark of Energy Visuals, Inc.