Dynamic Contingency Analysis for Cascading Failures

With funding from DOE’s Office of Electricity Delivery and Energy Reliability and in partnership with the Electric Reliability Council of Texas (ERCOT), Siemens, and the Electric Power Research Institute, PNNL developed the Dynamic Contingency Analysis Tool, or DCAT. DCAT uses cascading failure analyses to screen for weak spots on the grid, evolving beyond previous “steady-state contingency analysis” tools to “dynamic analysis” to simulate the sequences of cascading outages. It integrates dynamic models with protection schemes for generation, transmission, and loads, as well as other automatic or manual corrective actions that would be implemented during the response to the event.