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PGDTF Update to ROS - May 02, 2019

This update provides information on the Planning Geomagnetic Disturbance Task Force (PGDTF) meeting, including discussions on GMDs, EMP preparedness, GIC model building, and upcoming events.

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PGDTF Update to ROS - May 02, 2019

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  1. Planning Geomagnetic Disturbance Task Force (PGDTF) Update to ROS May 02, 2019 Aster Amahatsion 2019 PGDTF Chair

  2. PGDTF Meeting • Business meeting was held onApril 12th ,2019 • Discussed Federal and State activities regarding GMD • On March 26, President Donald Trump signed an executive order aimed at preparing the US to withstand an electromagnetic pulse (EMP) attack. The two types of EMPs refereed in the order are the high-altitude nuclear explosions and geomagnetic disturbances (GMDs) resulting from solar flares. • 2022 SSWG summer peak/min case building • ERCOT presented on the 2019 GIC model building status • Pass 1 GIC Model building, updating the bus and substation data of the GIC modeling data has been concluded on 4/5/19. • Went through data issues from pass 1 including buses without stations, duplicating stations and buses whose stations don’t exist. • Pass 2 GIC Model building ,updating the transformer table started on 4/15/19 and the template and supporting documents has been posted on MIS 05/02/2019 ROS Meeting

  3. PGDTF Meeting • Discussed NERC TPL-007-3, R9 Due in 01/01/2020 • ERCOT will calculate the GIC flow for the supplemental GMD after the GIC model is built and will post the result in MIS before the end of the year • Discuss Vulnerability Assessment Event Descriptions • Discussed approval of the PGRR070 by ROS, graying of the section 6.11 (2) and drafting the “Assessing GMD Effects on Power Systems” reference document • Next PGDTF meeting is postponed from May 7 to May 16, at LCRA (WebEx available) The address is: LCRA Redbud Center, Room 108 3601 Lake Austin Blvd Austin, Texas 78703 05/02/2019 ROS Meeting

  4. Questions 05/02/2019 ROS Meeting

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