Field Experiences in Reenergization of Electrical Networks from Thermal and Hydro Units

The problem dealt with in the paper is the fast return to normal-operation of a generation and transmission power system, after it has experienced a total or partial power failure. The aim is to illustrate the practices adopted in a hydrothermal power system and to present the outcomes and performances verified in some tests and field experiences. Considerations about the influence of the behaviour of the load and of the generating units involved in restoration are also given.