Stability enhancement of droop controlled PV based Microgrid with frequency dependent load

Author

Bhattacharya, Surya ; Mishra, Shivakant

Author_Institution

Dept. of Electr. Eng., Indian Inst. of Technol., New Delhi, New Delhi, India

fYear

2014

fDate

7-9 Sept. 2014

Firstpage

1

Lastpage

6

Abstract

This paper encompasses a comparative study of the power sharing/ droop controllers for a Low Voltage Microgrid and hence efficacy of the PQF droop control over the conventional P-F droop control and the differentiator based P-F droop is studied. Small signal stability studies are thereby performed to observe the stability limit as the droop gains are varied. Also in this paper, the low frequency oscillations pertaining to induction motor dynamics is studied and hence, extenuation of those oscillations without using a supplementary controller is achieved using the PQF droop control.

Keywords

distributed power generation; induction motors; photovoltaic power systems; power control; power generation control; power system stability; P-F droop control; PQF droop control efficacy; differentiator based P-F droop; distributed generation; droop controlled PV based microgrid; droop gains; frequency dependent load; induction motor dynamics; low frequency oscillations; low voltage microgrid; power sharing; small signal stability; stability enhancement; stability limit; Equations; Frequency control; Mathematical model; Microgrids; Oscillators; Power system stability; Voltage control; Droop Control; PVG; transient stability;

fLanguage

English

Publisher

ieee

Conference_Titel

North American Power Symposium (NAPS), 2014

Conference_Location

Pullman, WA

Type

conf

DOI

10.1109/NAPS.2014.6965426

Filename

6965426