Using Distributed Dynamic Voltage Restorers to Improve the Frequency Stability of Low-Inertia Networked Microgrids

Conference · Mon Dec 20 04:00:00 EST 2021

DOI:https://doi.org/10.1109/PESGM46819.2021.9637864· OSTI ID:1855419

Du, Wei ^[1]; Xie, Jing ^[1]; Schneider, Kevin P. ^[1]; Tuffner, Francis K. ^[1]; Bhattarai, Bishnu P. ^[1]; Vu, Thanh Long ^[1]; Wiegand, Greg ^[2]; Dent, Orris ^[2]

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1. BATTELLE (PACIFIC NW LAB)
2. Pacific Volt

This paper elucidates the novel concept of using distributed dynamic voltage restorers (DVRs), which are traditionally used to compensate for voltage sags, to improve the frequency stability of low-inertia networked microgrids. During frequency transients, the distributed DVRs rapidly regulate load voltages within an acceptable range, resulting in a fast change of load power consumption and helping improve frequency stability. To enable large-scale network simulation, a phasor-based model of DVRs is developed and validated against real data from a commercially available device. Finally, simulation results of a modified IEEE 123-node test feeder that comprises three microgrids and six DVRs verify the effectiveness of the proposed method.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 1855419
• Report Number(s): PNNL-SA-157692
• Country of Publication: United States
• Language: English