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Stability constrained voltage control in distribution grids with arbitrary communication infrastructures
Z. Yuan, J. Feng, Y. Shi, J. Cortés
Proceedings of the IEEE Conference on Decision and Control, Milan, Italy, 2024, submitted

Abstract

We consider the problem of designing inverter-based reactive power controllers that aim to perform voltage regulation in distribution grids while ensuring closed-loop system stability. In contrast to existing methods, where the provably stable controllers are restricted to be decentralized, we propose a design framework that enables the controllers to take advantage of an arbitrary communication infrastructure on top of the physical network. This allows the controllers to incorporate information beyond their local bus, covering existing methods as special cases, and leading to less conservative constraints on the controller design. We provide a procedure which guides the synthesis of controllers under different communication scenarios to satisfy the identified stability constraints. Simulations illustrate the effectiveness of the framework and highlight the role of communication in improving the control performance.

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