Enhanced Microgrid Power Flow Incorporating Hierarchical Control

TL;DR

This paper introduces an enhanced microgrid power flow method that integrates hierarchical control effects, improving accuracy and robustness for microgrid operation and monitoring, especially in complex urban environments.

Contribution

It develops a new Newton-based approach with a modified Jacobian matrix to incorporate hierarchical control modes and secondary adjustments.

Findings

Validated through case studies showing improved accuracy

Demonstrated efficiency in complex microgrid scenarios

Effective for urban microgrid operation and monitoring

Abstract

An enhanced microgrid power flow (EMPF) is devised to incorporate hierarchical control effects. The new contributions are threefold: 1) an advanced-hierarchical-control-based Newton approach is established to accurately assess power sharing and voltage regulation effects; 2) a modified Jacobian matrix is derived to incorporate droop control and various secondary control modes; and 3) the secondary adjustment is calculated on top of the droop-control-based power flow results to ensure a robust Newton solution. Case studies validate that EMPF is efficacious and efficient and can serve as a powerful tool for microgrid operation and monitoring, especially for those highly meshed microgrids in urban areas.