Open AccessUnified framework for frequency and voltage control of autonomous microgrids
Author(s) -
Sanjari Mohammad Javad,
Gharehpetian Gevork B.
Publication year - 2013
Publication title -
iet generation, transmission and distribution
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.92
H-Index - 110
eISSN - 1751-8695
pISSN - 1751-8687
DOI - 10.1049/iet-gtd.2012.0761
Subject(s) - matlab , controller (irrigation) , flexibility (engineering) , computer science , control engineering , control theory (sociology) , function (biology) , fuzzy logic , stability (learning theory) , set (abstract data type) , distributed generation , automatic frequency control , generator (circuit theory) , voltage , control (management) , engineering , renewable energy , power (physics) , mathematics , artificial intelligence , telecommunications , electrical engineering , statistics , physics , quantum mechanics , evolutionary biology , machine learning , agronomy , biology , programming language , operating system
A general and effective framework for the secondary control of islanded microgrids (MGs) including inverter‐based distributed generators and conventional generator is proposed in this study. The proposed framework works based on fuzzy potential function method and provides a clear vision for system designer in order to set the cooperation of different distributed energy resources (DERs) in regulating MG variables. Different potential functions are dened for each controllable microsource such that the minimum value of the potential function represents the microsource control target. The set points of DER units are dynamically updated by the optimisation unit located in MG central controller using available communication links. In addition, the small signal stability assessment is used to determine the parameter of the fuzzy potential function to guarantee the system stability. The simulation studies are carried out in the time‐domain, using the developed program in MATLAB environment. The results demonstrate the effectiveness and flexibility of the proposed framework in the frequency and voltage control of islanded MGs.