  Most power system test cases only have electrical parameters and can be used
only for studies based on a snapshot of system profiles. To facilitate more
comprehensive and practical studies, a synthetic power system including
spatio-temporal correlated profiles for the entire year of 2019 at one-hour
resolution has been created in this work. This system, referred to as the
synthetic Texas 123-bus backbone transmission (TX-123BT) system, has very
similar temporal and spatial characteristics with the actual Electric
Reliability Council of Texas (ERCOT) system. It has a backbone network
consisting of only high-voltage transmission lines in Texas, which is obtained
by the K-medoids clustering method. The climate data extracted from the North
American Land Data Assimilation System (NLDAS) are used to create the
climate-dependent profiles of renewable generation and transmission thermal
limits. Two climate-dependent models are implemented to determine wind and
solar power production pro-files respectively. In addition, two sets of
climate-dependent dy-namic line rating (DLR) profiles are created with the
actual climate information: (i) daily DLR and (ii) hourly DLR. Simulation
results of security-constrained unit commitment (SCUC) conducted on each of the
daily system profiles have validated the developed one-year hourly time series
dataset.
