2019/07/11 by Kevin Smith, Saber Jafarpour, Smith, Kevin D. +3
Engineering · #FOS: Electrical engineering #Microgrid Control and Optimization #Optimal Power Flow Distribution #Smart Grid Energy Management #Systems and Control (eess.SY) #electronic engineering #information engineering
paper · pdf · doi:10.48550/arxiv.1907.05532
openalex publication_date 2019/07/11 · openalex created_date 2022/07/28 · openalex updated_date 2026/07/28
Due to the rise of distributed energy resources, the control of networks of\ngrid-forming inverters is now a pressing issue for power system operation.\nDroop control is a popular control strategy in the literature for frequency\ncontrol of these inverters. In this paper, we analyze transient stability in\ndroop-controlled inverter networks that are subject to multiple operating\nconstraints. Using a physically-meaningful Lyapunov-like function, we provide\ntwo sets of criteria (one mathematical and one computational) to certify that a\npost-fault trajectory achieves frequency synchronization while respecting\noperating constraints. We show how to obtain less-conservative transient\nstability conditions by incorporating information from loop flows, i.e., net\nflows of active power around cycles in the network. Finally, we use these\nconditions to quantify the scale of parameter disturbances to which the network\nis robust. We illustrate our results with numerical case studies of the IEEE\n24-bus system.\n