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Planning Geomagnetic Disturbance Task Force (PGDTF) Update to ROS

Recap of PGDTF meeting discussing GMD impact on power systems, TPL-007-4 draft revision, NERC requirements for GIC data, and upcoming activities.

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Planning Geomagnetic Disturbance Task Force (PGDTF) Update to ROS

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  1. Planning Geomagnetic Disturbance Task Force (PGDTF) Update to ROS July 11, 2019 Aster Amahatsion 2019 PGDTF Chair

  2. PGDTF Meeting • Business meeting was held onJune 11th ,2019 • Discussed Federal and State activities regarding GMD • TPL-007-4 is currently being drafted, the new revision will add one more requirement to the standard. The new requirement deals with development and implantation of corrective action plans to mitigate assessed supplemental GMD event vulnerabilities. • GIC 2022 SSWG summer peak/min case building update • ERCOT presented on the 2019 GIC model building status • TSPs and ERCOT went through modeling data issues • Modelling data update for the GIC model was ended on 07/05/2019 7/11/2019 ROS Meeting

  3. PGDTF Meeting • Discussed NERC TPL-007-3 Requirments R11 and R12 • Requirements R11 and R12 are for implementing a process to obtain GIC and geomagnetic field data from at least one GIC monitor and one magnetometer located in the Planning Coordinator's area respectively. The data are required for model validation and situational awareness. • The compliance dead line for these requirements is July 01, 2021 • ERCOT will start drafting the process in the first quarter of 2020 • Availability of the monitors in ERCOT • Some TSPs have installed GIC monitors in their transformer neutrals • Texas A&M are installing magnetometers 7/11/2019 ROS Meeting

  4. PGDTF Meeting • Drafting ROS approved methodology for assessing GMD impacts on power systems • Had workshop on GMD Harmonics Impacts on Protection System on May meeting, the presenters include industry experts from EPRI, SEL, IEEE working group, Brazos Electric and also TSPs sharing their approach on development of potential GMD Events • PGDTF drafted and reviewed the methodology • System Protection Working Group will also review the draft in their July meeting Next PGDTF meeting: July 17 at the Met Center (WebEx available) 7/11/2019 ROS Meeting

  5. Questions 7/11/2019 ROS Meeting

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