Distributed Online Feedback Optimization for Real-time Distribution System Voltage Regulation
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. Numerical study results demonstrate that the proposed design achieves effective voltage regulation and outperforms other distributed and local approaches.
- S. Bolognani, R. Carli, G. Cavraro, and S. Zampieri, “On the need for communication for voltage regulation of power distribution grids,” IEEE Trans. Control Netw. Syst., vol. 6, no. 3, pp. 1111–1123, 2019.
- A. Hauswirth, Z. He, S. Bolognani, G. Hug, and F. Dörfler, “Optimization algorithms as robust feedback controllers,” Annu. Rev. Control, vol. 57, 2024.
- E. Dall’Anese and A. Simonetto, “Optimal power flow pursuit,” IEEE Trans. Smart Grid, vol. 9, no. 2, 2018.
- V. Haberle, A. Hauswirth, L. Ortmann, S. Bolognani, and F. Dorfler, “Non-convex feedback optimization with input and output constraints,” IEEE Control Syst. Lett., vol. 5, no. 1, pp. 343–348, 2021.
- S. Bolognani, R. Carli, G. Cavraro, and S. Zampieri, “Distributed reactive power feedback control for voltage regulation and loss minimization,” IEEE Trans. Automat. Contr., vol. 60, no. 4, 2015.
- Z. Tang, D. J. Hill, and T. Liu, “Distributed coordinated reactive power control for voltage regulation in distribution networks,” IEEE Trans. Smart Grid, vol. 12, no. 1, 2021.
- S. Magnússon, G. Qu, and N. Li, “Distributed optimal voltage control with asynchronous and delayed communication,” IEEE Trans. Smart Grid, vol. 11, no. 4, 2020.
- G. Qu and N. Li, “Optimal distributed feedback voltage control under limited reactive power,” IEEE Trans. Power Syst., vol. 35, no. 1, pp. 315–331, 2020.
- Z. He, S. Bolognani, M. Muehlebach, and F. Dörfler, “Gray-box nonlinear feedback optimization,” arXiv, pp. 1–16, 2024.
- S. Zhan, J. Morren, W. van den Akker, A. van der Molen, N. G. Paterakis, and J. G. Slootweg, “Fairness-incorporated online feedback optimization for real-time distribution grid management,” IEEE Trans. Smart Grid, vol. 15, no. 2, pp. 1792–1806, 2024.
Paper Prompts
Sign up for free to create and run prompts on this paper using GPT-5.
Top Community Prompts
Collections
Sign up for free to add this paper to one or more collections.
