This dataset is composed of 100 scenarios for the preventative security constrained optimal power flow (PSCOPF) problem and is based on the IEEE 14 bus test case, which is a model of the American Electric Power System in 1962 (https://www2.ee.washington.edu/research/pstca/pf14/pg_tca14bus.htm). IEEE14 has had many additions over the years: line limits, generator costs, etc. For the PSCOPF problem, a few security contingencies were defined. The100 scenarios, all known to be feasible, were generated by random perturbation of some of the limits (e.g. on generator power output and branch flows). These problems are small enough that they should not pose any challenge to off-the-shelf optimization solvers, commercial or otherwise.