Synchrophasors and Synchrowaveforms for the Distribution Grid: The SoCal 28-Bus Dataset

This paper presents an open-access dataset of phasor and waveform measurements from a real-world operational distribution network. The dataset encompasses diverse generation resources (including solar panels, fuel cells, natural gas generators, and utility interconnections), loads (including large-scale electric vehicle charging, data centers, central cooling, and offices), as well as topology changes (such as line outages and load transfers). Coverage is dense: all buses with non-zero power injections are instrumented. The availability of dense synchrophasor measurements enables a range of applications, including state estimation, system identification, power flow optimization, and feedback control. Additionally, the dataset includes synchronized waveforms, which enable the analysis of harmonics, sub-cycle events, dynamic grid impedance, and fast-timescale stability. Finally, the dataset provides time-varying circuit topology and parameters.