Providing Curative Distribution Grid Flexibility Using Online Feedback Optimization

TL;DR

This paper presents an online feedback optimization method to coordinate distribution grid flexibility in real-time, enhancing curative system operation by efficiently dispatching distributed energy resources.

Contribution

It introduces a novel online feedback optimization approach for real-time coordination of distribution grid flexibility, demonstrated through experimental validation.

Findings

Online Feedback Optimization effectively coordinates distributed energy resources.

The method provides fast and robust dispatch of active and reactive power.

Experimental results confirm the approach's viability and effectiveness.

Abstract

Distribution grid flexibility is discussed as a possible measure in curative system operation, yielding a need for an efficient and robust coordination mechanism for the joint flexibility provision by individual units to the transmission grid. This paper introduces a method to coordinate distribution grid level flexibility as a fast-responding curative measure based on Online Feedback Optimization. We utilize an optimization algorithm in a closed loop with the distribution grid to dispatch set points for active and reactive power to flexibility providing units. The approach is evaluated in an experimental setup, utilizing assets connected to an exemplary low voltage grid. Online Feedback Optimization is found to be both a viable as well as a highly effective approach to coordinate distributed energy resources in real-time curative system operation.