Quantitative Small-Signal Stability Analysis of Grid-Forming Inverters in Large-Scale Power Systems

Ding, Lizhi; Ouyang, Yuzhu; Lu, Xiaonan; Qin, Junjie; Dong, Shuan; Hoke, Andy; Tan, Jin

doi:10.1109/ECCE53617.2023.10362395

Quantitative Small-Signal Stability Analysis of Grid-Forming Inverters in Large-Scale Power Systems

Conference · 29 December 2023

DOI:https://doi.org/10.1109/ECCE53617.2023.10362395· OSTI ID:2305399

Ding, Lizhi; Ouyang, Yuzhu; Lu, Xiaonan; Qin, Junjie; Dong, Shuan; ;

In this paper, the challenges induced by the integration of inverter-based resources (IBRs) into existing power systems are discussed. Although the grid-forming (GFM) control has been used to enhance system performance in multiple sections of electric power systems (e.g., transmission and distribution systems, microgrids, among others), the coupling mechanism between GFM inverter and various types of other components in modern power systems should be clearly explored. Existing analyses mainly focus on qualitative investigations that verify the effectiveness of deploying GFM inverters for stability enhancement. A holistic system-level quantitative analysis is still missing to verify the detailed benefits of GFM inverters and their interactions with other generation units (e.g., synchronous generators [SGs], conventional grid-following [GFL] inverters, synchronous condensers, among others). To fill in the technical gaps, a holistic small-signal model of the entire system with both rotating generation units and IBRs is established along with the customized power flow analysis for varying steady-state operating points. Further, a quantitative method is proposed to identify the impacts of GFM inverters on system performance with an emphasis on a quantifiable stability margin and a complete modal analysis at the system level. Finally, a realistic test system is used to verify the proposed approach.

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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:: 2305399

Report Number(s):: NREL/CP-5D00-88806; MainId:89585; UUID:bdb40b13-3178-42a1-a297-ea10a2dda203; MainAdminId:71795

Resource Relation:: Conference: Presented at the IEEE Energy Conversion Congress and Exposition (ECCE), 29 October - 2 November 2023, Nashville, Tennessee

Country of Publication:: United States

Language:: English

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POWER TRANSMISSION AND DISTRIBUTION
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