The aim of this work is to draw up a short-term rescheduling taking into account power flow constraints in electrical network at Electricité de France. Automatic controlloops such as LFC and AGe systems have limited action ranges. So, the operator has to restore quickly safety margins by acting on generation plannings thanks to his own technical skill. We propose a general algorithm based on the exploration of technically feasible solution graph. The solving process uses heuristics and is controlled by two lists. Arranged in ascending priority order, these lists are defined by the operator according to his intuition and bis electrical system knowledge. The first one contains the thermal and hydroelectric power plants wbich are able to be involved. The other one includes the criterions that the solution will have to verify with a maximum efficiency. As a result, we always have an effective or partial solution. The study prototype uses object-oriented programmation (C++). It is connected with sorne EDF programs and shares same datas structures. The operator can act on several parameters in order to control the prototype. Finally, our mock-up could be shortly combined with operationnal EDF systems. Moreover, it could become a reusable and extensible base for further studies.
