The region of attraction of a grid with virtual synchronous machines employing virtual friction

Florian Reisner, George Weiss

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Virtual friction (VF) is a technique for stabilizing a grid comprising virtual synchronous machines (VSMs). The idea is to apply a torque to the virtual rotor of each VSM, proportional to the deviation of the rotor frequency from the center of inertia (COI) frequency of the grid. VF can be used to decouple frequency damping from frequency support. Theoretical stability results exist for a well known simplified grid model, the network reduced power system model. These show that under certain conditions, VF can stabilize a grid of VSMs. We investigate the region of attraction (ROA) of the stable equilibrium point of such a grid employing frequency droop and VF and show that VF can make such a system more robust to disturbances and increases the ROA.

Original languageEnglish
Title of host publication2022 IEEE 13th International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2022
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781665466189
DOIs
StatePublished - 2022
Event13th IEEE International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2022 - Kiel, Germany
Duration: 26 Jun 202229 Jun 2022

Publication series

Name2022 IEEE 13th International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2022

Conference

Conference13th IEEE International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2022
Country/TerritoryGermany
CityKiel
Period26/06/2229/06/22

Funding

FundersFunder number
Horizon 2020 Framework Programme
Horizon 2020861398

    Keywords

    • Region of Attraction
    • Simulation
    • Stability
    • Virtual Friction
    • Virtual Synchronous Machine
    • microgrid

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