This paper proposes sharing active and reactive power in autonomous voltage source inverter (VSI)-basedmicrogrids with no physical communication links. In decentralized VSI-based microgrids, when the demand or generationchanges, the output voltage of distributed generation units and the frequency of the system will also change. This studypresents a novel adaptive nonlinear droop (ANLD) scheme for preserving network stability, improving the system'sdynamics, and controlling power sharing in multibus microgrids in a decentralized manner. Subcontrollers are modeledin a state space and combined together so that a complete dynamic model of the network can be developed. Note thatcontroller coefficients are optimized to improve small-signal stability and to obtain a good operating point. To this end,an optimization problem is formulated and solved using the particle swarm optimization method. For the purposes ofcomparison, the proposed ANLD method and three other schemes are applied to two case studies: a 5-bus microgrid anda modied 37-bus IEEE microgrid. The stability margin analysis and time response simulations prove that the proposedalgorithm performs much better and can be applied to large-scale microgrids. ; QC 20170405 ; Autonomous microgrid, droop control, load sharing, small-signal dynamics, voltage source inverter model


    Access

    Download


    Export, share and cite



    Title :

    Stability Preservation and Power Management in Autonomous Microgrids using adaptive non-linear droop scheme


    Contributors:
    Nourollah, S (author) / Pirayesh, A (author) / Astero, Poria (author)

    Publication date :

    2015-01-01


    Remarks:

    ISI:000365508200032



    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



    Classification :

    DDC:    629



    Autonomous Power Management in LVDC Microgrids based on a Superimposed Frequency Droop

    Peyghami, Saeed / Mokhtari, Hossein / Blaabjerg, Frede | BASE | 2018

    Free access


    Coordinated Control Scheme for Electric Vehicles Connected to Droop-Controlled MicroGrids

    Margoum, El hassane / Mharzi, Hassan / Faddel, Samy et al. | IEEE | 2019


    Optimal Adaptive Droop Control for Effective Load Sharing in AC Microgrids

    Anvari-Moghaddam, Amjad / Shafiee, Qobad / Quintero, Juan Carlos Vasquez et al. | BASE | 2016

    Free access

    Robust stability analysis of a novel droop-based distributed control scheme for islanded operation of DC microgrids

    Mirjafari, Mohammadreza / Banejad, Mahdi / Molla-Ahmadian, Hamed et al. | BASE | 2022

    Free access