Analysis of the distributed generation for ancillary services support in distribution networks

Considering the constant development that have been happening on distribution networks, mainly with smart grids concept advent, the ancillary services support through distributed generation systems is essential to maintain and improve the quality of the supplied electrical energy. In this way, the electrical system could contain two subsystems: one subsystem for online measurement, which would detect the ancillary service needs, sending signals when a service was required; and other subsystem which would provide the service when the respective sign was received. The hierarchy in the ancillary service support could be defined by decision makers taking into account the importance of some criteria, like system reliability, technical characteristics and economic aspects. This work aims to evaluate a distributed generation supporting ancillary services to a real feeder in different scenarios, according to the concerns of both end consumers and distribution energy company.