Droop Control-Based Dispatch of an Islanded Microgrid with Multiple Grid-Forming Sources: Preprint

Conference · Tue Nov 07 00:00:00 EST 2023

OSTI ID:2205668

Ganguly, Subhankar; Wang, Jing; Shirazi, Mariko; Kroposki, Benjamin

Before rotating fossil-fuel based synchronous generators (SGs) are phased out in line with renewable goals, grid-forming (GFM) inverters are expected to parallel with SGs. Primary droop control allows them share power without communication, however, it is necessary to dispatch GFM inverters and/or SG with desired output power for better energy management (e.g., one GFM inverter needs to charge the battery due to low state-of-the charge). Therefore, this paper develops analytic approach to dispatch GFM inverters and SG with desired output power by shifting the droop intercept up/down while maintain the same frequency operating point for improved transient stability. This concept is demonstrated through pure hardware setup with two off-the-shelf inverters and one diesel generator under islanded microgrid, and we also provide insight on real-world implementation of the proposed concept.

• Research Organization: National Renewable Energy Laboratory (NREL), Golden, CO (United States)
• Sponsoring Organization: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office
• DOE Contract Number: AC36-08GO28308
• OSTI ID: 2205668
• Report Number(s): NREL/CP-5D00-86163; MainId:86936; UUID:a97536be-e609-492a-b49f-96f534ff71cd; MainAdminID:71030
• Conference Information: Presented at the 49th Annual Conference of the IEEE Industrial Electronics Society (IECON), 16-19 October 2023, Singapore
• Country of Publication: United States
• Language: English

Related Subjects

droop control
grid-forming inverter
power sharing
POWER TRANSMISSION AND DISTRIBUTION
real time dispatch