Intelligent Pinning Based Cooperative Secondary Control of Distributed Generators for Microgrid in Islanding Operation Mode

TL;DR

This paper proposes an intelligent pinning strategy for cooperative secondary control of distributed generators in islanded microgrids, enhancing transient voltage and frequency regulation performance through optimized node selection.

Contribution

It introduces a novel intelligent pinning approach based on network connectivity and node distance, improving microgrid control dynamics during islanded operation.

Findings

Improved transient voltage regulation

Enhanced frequency stability

Effective control in various microgrid configurations

Abstract

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.