A new method for operating microgrid with the capability of coping with switch-in and switch-off of large percentage of real and reactive power

Author

Daming Zhang ; Liao, M.Y.

Author_Institution

Univ. of New South Wales, Sydney, NSW, Australia

fYear

2015

Firstpage

528

Lastpage

532

Abstract

This paper presents a new method for operating microgrid, which is formed by one droop controlled and other two PQ controlled distributed generators (DGs). The reference power of droop-controlled DG is adjusted by a multiplying factor, which is produced from the voltage variation. By doing so, the dynamic balance of the system can be reached swiftly. The inverter topology is voltage source inverter with LCL filter, which is controlled by proportional resonant controller. Due to the good property of proportional resonant controller and the introduction of the multiplying factor, the system can ride through the disturbance caused by the switch-in and switch-off of large load. There is also no need to change the set point of reference power with respect to the load change.

Keywords

distributed power generation; invertors; power supply quality; proportional control; reactive power; LCL filter; PQ controlled distributed generators; droop controlled distributed generators; droop-controlled DG; inverter topology; microgrid operation; proportional resonant controller; reactive power; real power; voltage source inverter; voltage variation; Inverters; Microgrids; Phase locked loops; Power harmonic filters; Reactive power; Switches; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Drive Systems (PEDS), 2015 IEEE 11th International Conference on

Conference_Location

Sydney, NSW

Type

conf

DOI

10.1109/PEDS.2015.7203437

Filename

7203437