Title :
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
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;
Conference_Titel :
Power Electronics and Drive Systems (PEDS), 2015 IEEE 11th International Conference on
Conference_Location :
Sydney, NSW
DOI :
10.1109/PEDS.2015.7203437
