Secondary control of voltage & current unbalance in a multi-bus microgrid using cooperative adjustment of Q− droop gains

Authors

Edward Smith, University of WollongongFollow
Duane A. Robinson, University of WollongongFollow
Phil Ciufo, University of WollongongFollow

RIS ID

121917

Publication Details

E. Smith, D. A. Robinson & P. Ciufo, "Secondary control of voltage & current unbalance in a multi-bus microgrid using cooperative adjustment of Q− droop gains," in 2017 Australasian Universities Power Engineering Conference (AUPEC), 2017, pp. 1-7.

Abstract

This paper describes a combined current and voltage unbalance compensation scheme for static power converters on a multi-bus microgrid utilizing cooperative regulation on a sparse ad-hoc communication network. The proposed control scheme is both robust to changing network conditions and corrects for sub-optimal gain settings at each distributed generation unit. The scheme is based on local voltage and current measurements by each distributed generation unit on the network, and utilizes a primary and secondary control hierarchy. The scheme is then simulated using Matlab SimPowerSystem to demonstrate operation of the compensation scheme and evaluate its performance.