Optimal Distributed Feedback Voltage Control under Limited Reactive Power

TL;DR

This paper introduces a distributed reactive power control method for power distribution networks that ensures voltage regulation, respects reactive power limits, and minimizes operational costs, validated through numerical case studies.

Contribution

It presents a novel distributed voltage control algorithm that guarantees reactive power constraints and effective voltage regulation in power networks.

Findings

Controller effectively maintains voltage within desired range.

Reactive power constraints are always satisfied.

Numerical simulations demonstrate robustness and efficiency.

Abstract

In this paper, we propose a distributed voltage control in power distribution networks through reactive power compensation. The proposed control can (i) operate in a distributed fashion where each bus makes its decision based on local voltage measurements and communication with neighboring buses, (ii) always satisfy the reactive power capacity constraint, (iii) drive the voltage magnitude into an acceptable range, and (iv) minimize an operational cost. We also perform various numerical case studies to demonstrate the effectiveness and robustness of the controller using the nonlinear power flow model.