Power flow data for 4-bus, 2-generator transmission network case from Grainger & Stevenson. This is the 4-bus example from "Power System Analysis", by John Grainger, Jr., and William Stevenson, McGraw-Hill, pp. 337-338, 1994.

Power flow data for Polish system - summer 2004 off-peak. This case represents the Polish 400, 220 and 110 kV networks during summer 2004 off-peak conditions. Multiple centrally dispatchable generators at a bus have not been aggregated....

Power flow data for Polish system - winter 1999-2000 peak. This case represents the Polish 400, 220 and 110 kV networks during winter 1999-2000 peak conditions. It is part of the 7500+ bus Europen UCTE system. To decrease the number of buses, the...

Power flow data for Polish system - summer 2008 morning peak. This case represents the Polish 400, 220 and 110 kV networks during summer 2008 morning peak conditions. This data was graciously provided by, and is distributed with the permission...