Intelligent Pinning Based Cooperative Secondary Control of Distributed Generators for Microgrid in Islanding Operation Mode
For microgrid operators, this work offers a method to enhance transient performance in islanded operation, though it is an incremental improvement over existing pinning control approaches.
This paper proposes intelligent pinning-based cooperative secondary control for distributed generators in islanded microgrids, showing that selecting pinning nodes based on connectivity and distance improves transient voltage and frequency regulation.
Motivated by the fact that the location(s) and structural properties of the pinning node(s) affect the algebraic connectivity of a network with respect to the reference value and thereby, its dynamic performance, this paper studies the application of intelligent single and multiple pinning of distributed cooperative secondary control of distributed generators (DGs) in islanded microgrid operation. It is shown that the intelligent selection of a pinning set based on the degree of connectivity and distance of leader DG(s) from the rest of the network improves the transient performance for microgrid voltage and frequency regulation. The efficacy of the distributed control strategy based on the proposed algorithms is illustrated via numerical results simulating typical scenarios for a variety of microgrid configurations.