Estimated economic load dispatch based on real operation logbook

The economic load dispatch (ELD) problem of electric power systems has been solved by many techniques including traditional and modern optimization algorithms. The main problem of achieving this task is that all precise specifications of the generating units are required. Also, in practice, many power systems are operated without considering the ELD strategy due to the lack of experience to deal with this part, which is embedded as a package in the energy management system (EMS), and/or the difficulty of constructing precise constrained objective functions matched with the real generating units. Based on a fact that most power systems maintain their daily records, the estimated economic load dispatch (EELD) can be determined using these recorded datasheets. This novel method can be applied without using any special software, and it is an optimization free technique. Moreover, this technique does not require to determine any parameter nor constraint on the generating units, and all candidate solutions are practical and feasible. The proposed method is tested with a real power system data and it shows encouraging results.