Conference Agenda

Session

B4-5: Meshed AC/DC Systems

Time:

Wednesday, 01/Oct/2025:

10:30am - 12:15pm

Location: Room 518BC

Session Topics:

B4 DC systems and power electronics

This session addresses control and operation as well as study methodologies of parallel or meshed AC/DC system.

Presentations

10:30am - 10:45am

Generalized AC/DC Power Flow Methodology including Opportunities offered by Converters

Lee Raiyan bin Zulkifli¹, Josep Fanals i Batllori¹, Titouan Delorme¹, Santiago Peñate-Vera¹, Oriol Gomis Bellmunt²

¹eRoots Analytics, Spain; ²CITCEA-UPC, Spain

10:45am - 11:00am

Control and Operation of Parallel Interconnection of HVDC and HVAC Systems

Omar Fadhel Jasim¹, Taoufik Qoria², Farheen Chishti³, Fatima Amara¹, Ameen Fayaz¹, Senthooran Balasubramaniam¹, Priyanka Mishra³

¹GE Vernova, United Kingdom; ²GE Vernova, Germany; ³GE Vernova, India

11:00am - 11:15am

Resilience-Oriented Evaluation of Static Var Compensators in Hybrid AC-HVDC Power Systems

Mohammad Ghanbari¹, Mohsen Zadeh¹, Sina Driss¹, Fatemeh Ahmadi-Gorjayi²

¹Jacobs Engineering Group, Canada; ²Jacobs Solutions, United States

11:15am - 11:30am

Modeling dispatch scenarios of an embedded HVDC link using historical NYISO data

Mohtarima Begum Medha¹, Luigi Vanfretti¹, Supriya S. Tawde², Jason Frasier², Pradip Kumar²

¹Rensselaer Polytechnic Institute, United States of America; ²New York Independent System Operator (NYISO)

11:30am - 11:45am

Frequency Stability in Hybrid AC/DC Transmission Systems: Evaluation of Grid Forming and Grid Following Converter Controls with DC Momentary Reserves

Siyuan Li, Florian Freidinger, Aaron Hebing, Lukas Jung, Xiong Xiao, Jutta Hanson

Technical University of Darmstadt, Germany

11:45am - 12:00pm

Enhancing Grid Stability: The Role and Design of Static Frequency Converters in the Kühtai 2 Variable Speed Pumped Storage Power Plant

Alexandre Christe¹, Tobias Thurnherr¹, Christoph Haederli¹, Steve Aubert¹, Wolfgang Kofler², Andreas Hammer²

¹Hitachi Energy Ltd, Switzerland; ²TIWAG Tiroler Wasserkraft AG