  Synthetic power systems that imitate functional and statistical
characteristics of the actual grid have been developed to promote researchers'
access to public system models. Developing time series to represent different
operating conditions of these synthetic systems will expand the potential of
synthetic power systems applications. This paper proposes a methodology to
create synthetic time series of bus-level load using publicly available data.
Comprehensive validation metrics are provided to assure that the quality of
synthetic time series data is sufficiently realistic. This paper also includes
an example application in which the methodology is used to construct load
scenarios for a 10,000-bus synthetic case.
