Schedule 6:00 – Check-in, Chapter Business and Networking 6:30 – Dinner Served 7:00 – Presentation 8:00 – Adjourn Summary: Title: Sensitivity analysis of harmonic levels at POI using mixed GSU transformer phase shift, a case study. Description: Join the IEEE PES/IAS Denver chapter during our March technical meeting. Our guest speaker this month is Gerardo Valdés Bustamante from Electric Power Engineers. The integration of renewable energy sources into power systems has led to increased concerns regarding the impact of harmonics on the stability and reliability of the grid. This study investigates the sensitivity of harmonic levels at the Point of Interconnection (POI) in a power system, focusing on the application of mixed Generator Step-Up (GSU) transformer phase shift configurations. The objective is to analyze how varying the vector group in the GSU transformers affects harmonic distortion at the POI. The case study was based on a realistic power system model with renewable energy sources and mixed GSU transformers. A comprehensive sensitivity analysis was conducted by changing the vector group of the GSU transformers and monitoring the resulting harmonic levels at the POI. The study identified the optimal vector group configurations that minimize harmonic distortion while ensuring efficient power transfer. Speaker(s): Gerardo Agenda: Schedule 6:00 – Check-in, Chapter Business and Networking 6:30 – Dinner Served 7:00 – Presentation 8:00 – Adjourn Room: Upstairs Meeting Room, Bldg: The Original Brooklyn's, 2644 W Colfax Ave, Denver, Colorado, United States, 80204, Virtual: https://events.vtools.ieee.org/m/411636