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Technical Talk with RF
ReliabilityFirst (RF) offers a regularly scheduled monthly call to provide entities and stakeholders with a forum for addressing topics and questions relevant to reliability, resilience and security.
While RF Subject Matter Experts (SMEs) will provide presentations and updates, they will not address entity-specific questions and issues. These types of questions can be handled offline by using the RF Assist Visit program. If you have any questions, please reach out to Mike Hughes, Entity Engagement Manager, 216-503-0617.
Event Information
August 2025 Technical Talk with RF
Monday, Aug. 18, 2025, 2:00 – 3:30 p.m. ET
Join link: https://reliabilityfirst.webex.com/reliabilityfirst/j.php?MTID=m40f6175b7cef6561a96ec5301969f1d3
Meeting number: 2313 993 1902
Meeting password: 0123456 (0123456 when dialing from a phone or video system)
Join by phone: 1-650-479-3207 Call-in toll number (US/Canada)
Access code: 231 399 31902
Please join us on Slido.com using #TechTalkRF as the event code.
Agenda
What to know about NERC Reliability Standard PRC-029-1 and how it will impact inverter-based resources (IBRs)
Dan Ransom, Senior Consulting, Technical Application Engineer, GE Vernova
NERC Reliability Standard PRC-029-1 (Frequency and Voltage Ride-through Requirements for Inverter-Based Resources) was developed to replace PRC-024 (Frequency and Voltage Protection Settings for Generating Resources) and PRC-026 (Relay Performance During Stable Power Swings) specifically for inverter-based resources (IBRs). This is a strategic shift designed to improve clarity and reliability, especially during grid disturbances, in an increasingly inverter-driven grid by establishing performance-based ride-through requirements tailored to their unique capabilities.
Historically, IBRs were included under PRC-024 and PRC-026, which were originally designed with synchronous generators in mind. However, these standards do not adequately reflect the unique dynamic behavior and control capabilities of IBRs. PRC-029-1 establishes tailored ride-through requirements—both capability-based and performance-based—specifically for IBRs, ensuring they remain connected and support grid stability during voltage and frequency excursions.
Rate of Change of Frequency and Underfrequency Load Shedding
John “JP” Skeath, Senior Engineer, NERC
JP Skeath will discuss Rate of Change of Frequency as it relates to underfrequency load shedding. With the ever-increasing mix of inverter-based resources powering the electric grid, this relationship has gained importance, as system inertia decreases.