Title :
Small signal stability assessment of islanded VSI-based microgrids considering load variations
Author :
Hadavi, S. ; Sanjari, M.J. ; Yatim, A.H. ; Gharehpetian, G.B.
Author_Institution :
Electr. Eng. Dept., Amirkabir Univ. of Technol., Tehran, Iran
Abstract :
The effects of load variations on the operation condition of islanded MicroGrid (MG) including VSI-based distributed generation (DG) are presented in this paper. The role of MG Central Controller and droop controllers as the first and second hierarchical control levels in islanded MG is described. In order to study the effects of load variations on the stability of MG, the voltage source inverters (VSI), load and network are modeled and eigenvalue analysis is carried out to define an index to illustrate the small signal stability of MG.
Keywords :
distributed power generation; eigenvalues and eigenfunctions; invertors; power system stability; DG; VSI; VSI-based distributed generation; droop controllers; eigenvalue analysis; hierarchical control levels; islanded MG; islanded VSI-based microgrids; load variations; small signal stability assessment; voltage source inverters; Inverters; Mathematical model; Microgrids; Power system stability; Stability criteria; Voltage control; Microgrid; Voltage Source Inverters; distributed generation; islanded-mode operation; small signal stability;
Conference_Titel :
Energy Conversion (CENCON), 2014 IEEE Conference on
Conference_Location :
Johor Bahru
DOI :
10.1109/CENCON.2014.6967544
