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arXiv · 2509.09048

Decentralized Local Voltage Control for Active Distribution Networks

Diana Vieira Fernandes·Soummya Kar·Carlos Santos Silva
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Abstract

Distribution networks face challenges from the increasing deployment of Distributed Energy Resources (DERs) and the emergence of bidirectional power flows. We propose a decentralized Volt/VAr control method based on a saddle-point reformulation and consensus+innovation (C+I) updates. Each agent at a controllable bus computes and enforces its own set-points using only neighbor communication. Our method embeds passive buses directly, preserves network physics through a linearized Jacobian model, and avoids any supervisory nodes. Simulation results on a modified CIGRE low-voltage network show voltage stability improvement within operational limits, indicating the viability of a fully decentralized (edge-based) Volt/VAr control solution.

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Diana Vieira Fernandes, Soummya Kar, Carlos Santos Silva. 2025-09-10. Decentralized Local Voltage Control for Active Distribution Networks. https://arxiv.org/abs/2509.09048

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