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Transient Stability of Droop-Controlled Inverter Networks With Operating Constraints by Kevin D. Smith; Saber Jafarpour; Francesco Bullo is a Engineering article available to read on EtoBox.

What is Transient Stability of Droop-Controlled Inverter Networks With Operating Constraints about?

Due to the rise of distributed energy resources, the control of networks of grid-forming inverters is now a pressing issue for power system operation. Droop control is a popular control strategy in the literature for frequency control of these inverters. In this paper, we analyze transient stability in droop-controlled inverter networks that are subject to multiple operating constraints. Using a physically-meaningful Lyapunovlike function, we provide two sets of criteria (one mathematical and one computational) to certify that a post-fault trajectory achieves frequency synchronization while respecting operating constraints. We show how to obtain less-conservative transient stability conditions by incorporating information from loop flows, i.e., net flows of active power around cycles in the network. Finally, we use these conditions to quantify the scale of parameter disturbances to which the network is robust. We illustrate our results with numerical case studies of the IEEE 24-bus system.

Who reads Transient Stability of Droop-Controlled Inverter Networks With Operating Constraints?

Author

Kevin D. Smith; Saber Jafarpour; Francesco Bullo

Publisher

Institute of Electrical and Electronics Engineers (IEEE)

Published

2022

Language

EN

Field

Engineering (Physical Sciences)