PGDTF Archives

Planning Geomagnetic Disturbance Task Force

PGDTF@LISTS.ERCOT.COM

Options: Use Forum View

Use Monospaced Font
Show HTML Part by Default
Show All Mail Headers

Message: [<< First] [< Prev] [Next >] [Last >>]
Topic: [<< First] [< Prev] [Next >] [Last >>]
Author: [<< First] [< Prev] [Next >] [Last >>]

Print Reply
Subject:
From:
"Meier, Eric" <[log in to unmask]>
Reply To:
Planning Geomagnetic Disturbance Task Force <[log in to unmask]>
Date:
Thu, 28 Feb 2019 22:10:58 +0000
Content-Type:
multipart/related
Parts/Attachments:
text/plain (4 kB) , text/html (16 kB) , image004.jpg (16 kB) , image003.png (45 kB)
***** EXTERNAL email. Please be cautious and evaluate before you click on links, open attachments, or provide credentials. *****

PGDTF,

The GIC System Model Building will begin on 3/4/2019 with Pass 0 and follow the schedule below:

[cid:image003.png@01D4CF80.3003DCB0]

For each pass, submissions are only intended to address the specific items laid out in the Purpose column of the table above. So for Pass 0, no GIC templates should be submitted, only Idevs to modify the SSWG case if needed. All submissions should be send to [log in to unmask]<mailto:[log in to unmask]>.

All the necessary materials have been posted to MIS under the Transmission Service Provider Information tab then Models - GIC System Models. Specifically look for the GIC_System_Model_Build_Pass_0_Materials zip file. This material includes:

*         GIC Model Templates

*         Change logs for both SUM and MIN RAW file imports

*         Job Log

*         A list of TSP owned 345 kV loads currently in the Operations Model

*         A full database validation log

*         Potential Line Data Issues

*         PGDTF Model Building Contact List

*         GIC Modeling Expectations

The latest SSWG cases needed for the GIC System Model building have already been posted to MIS. These cases are:

*         18SSWG_2022_MIN_U2_Final_022222019

*         18SSWG_2022_SUM_U2_Final_022222019

Pass 0 is intended for the updating of the SSWG RAW file to update it so it matches the GIC DC Model with regards to new topology, splitting shunts, etc. Please take a look at the GIC Modeling Expectations, Section 6 to see what exactly was imported into the GIC DC Model from the SSWG case and what info was not. From the SSWG case only buses and circuit numbers are imported, not element attributes. And the import only extends to the bus, transformer, and branch tables. When possible, if buses for branches and two winding transformers were just switched, the data associated with the original transformer record was preserved (accounting for the change in buses and windings). However it is still the responsibility of the equipment owner to verify that their equipment attributes are correct. Also if an element was in the planning stages during the previous model build and is now in operations, be sure to verify that the original data submitted is still correct. There is no flag to currently identify elements in planning vs operations in the template provided. Also, where possible, put your company name in the company column of records.

When modeling the load serving power transformers, model them if they have a high side wye-grounded winding above 200 kV. If the high side winding is delta, it does not need to be modeled but provide evidence to ERCOT that it has a delta winding.

As validation is normally only run on new and modified elements changes submitted with a template, a separate full validation was run on the entire database. This validation log will pick up issues that existed from the previous model build. It would be highly beneficial to either correct the issues or verify that the information previously submitted is valid in the full database validation log.

For the Potential_Line_Data_Issues spreadsheet, it is broken up into two tabs. The first tab (Low R per Distance) are lines that have been flagged as possibly have a low resistance per its length. The second tab (Line Length > 160 km) is a list of lines that have a length greater than 160 km and these lines and their buses and substations should be checked for data issues. The data for this sheet came from the previous 2018 GIC DC Model so it may not be entirely up to date but the lines should still be checked.

Again, all submissions should be send to [log in to unmask]<mailto:[log in to unmask]>.

Please let me know if you have any questions.

Thanks,

Eric


[cid:image001.jpg@01D16FE2.A112C930]<http://www.ercot.com/>


Eric Meier
Network Model Engineer 2
Network Model Administration
2705 West Lake Drive
Taylor, Texas 76574
[log in to unmask]
O: 512-248-6770







########################################################################

To unsubscribe from the PGDTF list, click the following link:
http://lists.ercot.com/scripts/wa-ERCOT.exe?SUBED1=PGDTF&A=1


ATOM RSS1 RSS2