State Space Modeling of Inverter Based Microgrids Considering Distributed Secondary Voltage Control

TL;DR

This paper presents a comprehensive state space model for inverter-based microgrids, incorporating distributed secondary voltage control with sparse communication, validated through a microgrid example with multiple DGs and loads.

Contribution

It introduces a detailed state space model including secondary voltage control using distributed algorithms with minimal communication overhead.

Findings

Effective voltage regulation demonstrated in microgrid simulation.

Distributed control achieves voltage stability with sparse communication.

Modeling approach enhances understanding of inverter-based microgrid dynamics.

Abstract

Appropriate control of high penetration renewable energies in power systems requires a complete modeling of the system. In this paper, a comprehensive state space modeling of voltage source inverters, networks and loads are studied. We have modeled a secondary voltage control that utilizes the nominal set points of the output voltage as the input for the controller design. A distributed control algorithm only requiring a sparse communication between neighboring distributed generators (DGs) is used. The proposed secondary voltage model is applied on a microgrid with three DGs and two loads to verify the results.