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arXiv · 2405.02487

Distributed Online Feedback Optimization for Real-time Distribution System Voltage Regulation

Sen Zhan·Nikolaos G. Paterakis·Wouter van den Akker·Anne van der Molen·Johan Morren·Han Slootweg
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Abstract

We investigate the real-time voltage regulation problem in distribution systems employing online feedback optimization (OFO) with short-range communication between physical neighbours. OFO does not need an accurate grid model nor estimated consumption of non-controllable loads, affords fast calculations, and demonstrates robustness to uncertainties and disturbances, which render it particularly suitable for real-time distribution system applications. However, many OFO controllers require centralized communication, making them susceptible to single-point failures. This paper proposes a distributed OFO design based on a nested feedback optimization strategy and analyzes its convergence. The strategy preserves end-users' privacy by keeping voltage data local. Numerical study results demonstrate that the proposed design achieves effective voltage regulation and outperforms other distributed and local approaches.

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Sen Zhan, Nikolaos G. Paterakis, Wouter van den Akker, Anne van der Molen, Johan Morren, Han Slootweg. 2024-05-03. Distributed Online Feedback Optimization for Real-time Distribution System Voltage Regulation. https://doi.org/10.1109/tpwrs.2025.3585607

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