Distributed Secondary Control for Islanded Microgrids—A Novel Approach

Qobad Shafiee, Josep M. Guerrero, Juan C. Vasquez
2014 IEEE transactions on power electronics  
This paper presents a novel approach to conceive the secondary control in droop-controlled MicroGrids. The conventional approach is based on restoring the frequency and amplitude deviations produced by the local droop controllers by using a MicroGrid Central Controller (MGCC). A distributed networked control system is used in order to implement a distributed secondary control (DSC) thus avoiding its implementation in MGCC. The proposed approach is not only able to restore frequency and voltage
more » ... f the MicroGrid but also ensures reactive power sharing. The distributed secondary control does not rely on a central control, so that the failure of a single unit will not produce the fail down of the whole system. Experimental results are presented to show the feasibility of the DSC. The time latency and data drop-out limits of the communication systems are studied as well.
doi:10.1109/tpel.2013.2259506 fatcat:uvmwaq3bajbtxio6t766opfqzu