Continuation power flow with multiple load variation and generation re-dispatch patterns

Continuation power flow (CPFLOW) with multiple load variation and generation re-dispatch patterns is developed in this paper. The power injection variations are determined by both load variation and real generation dispatch in power systems. To model power injection variations, a piecewise linear model in the power injection space is used to model multiple load variations while the economic dispatch or other generation scheduling schemes is applied to determine the participation factor of each generator. The newly-improved CPFLOW tool is applied to test the impacts of multiple power injection variations on load margin. Our numerical studies indicate that power injection directions can significantly affect the load margin to nose point, and the difference between uniform power injection direction and multiple power injection variations can be more than 28%