Embedding PMU Algorithms in Grid-Following Converters: A Feasibility Study

One of the most critical challenges in the evolution of smart grids is the shortage of measurement devices at the distribution level, coupled with the high costs associated with extensive refurbishment of the existing monitoring infrastructure. To address this issue, this paper investigates the feasibility of upgrading the controllers of smart Power Electronic Converters (PECs) to turn them into auxiliary measurement devices, thereby improving system observability. Specifically, an algorithm originally conceived for a Phasor Measurement Unit (PMU) is adapted to meet both the Class P specifications of the IEEE Standard IEC/IEEE 60255-118-1:2018 and the requirements for grid connection reported in the IEEE Standard 1547-2023. Several simulation results confirm the validity of the general idea, although some concerns remain on the algorithm computational burden to ensure real-time performance.