A hierarchical approach for frequency regulation in islanded inverter-based microgrids

Author

Ariany, Morteza ; Gharehpetian, Gevorg B.

Author_Institution

Dept. of Electr. Eng., Amirkabir Univ. of Technol., Tehran, Iran

fYear

2012

fDate

24-25 May 2012

Firstpage

1

Lastpage

5

Abstract

This paper represents a hierarchical frequency regulation in an islanded inverter-based microgrid. The role of Microgrid Central Controller (MGCC) and droop controllers as the first and second hierarchical control levels in islanded microgrids is decribed. The control of voltage and frequency of an islanded inverter including Phase-locked loop (PLL), voltage controller, current controller and frequency controller is illustrated in detail. The effectiveness of proposed control strategy is demonstrated throurh a test system including three 10-kVA Voltage Source Inverters (VSIs) that is simulated in PSCAD/EMTDC software.

Keywords

distributed power generation; electric current control; frequency control; invertors; phase locked loops; voltage control; MGCC; PLL; PSCAD/EMTDC software; VSI; current controller; distributed generation; droop controllers; frequency controller; frequency regulation; hierarchical approach; hierarchical control; islanded inverter-based microgrids; microgrid central controller; phase-locked loop; voltage controller; voltage source inverters; Frequency control; Inverters; Load modeling; Mathematical model; Phase locked loops; Reactive power; Voltage control; MicroGrid Central Controller (MGCC); Microgrid; Voltage Source Inverters (VSI); hierarchical frequency regulation; islanded-mode operation;

fLanguage

English

Publisher

ieee

Conference_Titel

Smart Grids (ICSG), 2012 2nd Iranian Conference on

Conference_Location

Tehran

Print_ISBN

978-1-4673-1399-5

Type

conf

Filename

6243526