Decentralized Distribution System Restoration with Grid-Forming/Following Inverter-Based Resources

Conference · Sun Jul 17 04:00:00 EDT 2022 · 2022 IEEE Power & Energy Society General Meeting (PESGM)

DOI:https://doi.org/10.1109/pesgm48719.2022.9916774· OSTI ID:2326144

Gao, Xue ^[1]; Nejad, Reza Roofegari ^[2]; Sun, Wei ^[2]

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1. University of Central Florida,Department of Electrical and Computer Engineering,Orlando,FL,USA; University of Central Florida
2. University of Central Florida,Department of Electrical and Computer Engineering,Orlando,FL,USA

The high penetration of distributed energy resources (DERs) in active distribution systems has posed challenges to the centralized distribution system restoration (DSR) strategies in current practice. On the other hand, the advancement in smart inverter technologies enables the bottom-up restoration capabil-ity. This paper is motivated to develop a 3-layered hierarchical framework for decentralized DSR, based on the grid-forming (GFM) and grid-following (GFL) grid-edge inverters. The first layer presents the tertiary control, which determines the load pickup schedule and generation dispatch of DERs, using the alternating direction method of the multipliers algorithm. The second layer consists of two control functions: GFM control, which regulates voltage and frequency, establishing a stable grid for GFL inverters to follow; and GFL control, which regulates the real and reactive power. In the third layer, the primary control is proposed to regulate the inverter voltage and current, which is developed based on the virtual oscillator control (VOC). The developed framework is tested in the modified IEEE 13-node test feeder. Two scenarios of grid-connected and islanded operating modes are designed, and simulation results demonstrate the effectiveness of decentralized DSR strategies for controlling grid-edge inverters to enhance the distribution system resilience.

• Research Organization: University of Central Florida
• Sponsoring Organization: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Office of Sustainable Transportation. Bioenergy Technologies Office (BETO); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office
• DOE Contract Number: EE0009028
• OSTI ID: 2326144
• Conference Information: Journal Name: 2022 IEEE Power & Energy Society General Meeting (PESGM)
• Country of Publication: United States
• Language: English

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