The transparency needs and the market opportunities arising from the liberalization of the energy sector often require Transmission System Operators to review some established practices, by means of which quality, safety and efficiency of the power system operation have been assured for years. This article describes a solution for the very short term optimal dispatching (also named "Advance Dispatching" with international terminology), jointly developed by Terna and CESI and currently in operation at the National Control Centre in Rome. Advance Dispatching represents an innovative tool for the adequacy analysis of the Italian power system, supporting Control Room Operators in the real-time dispatching phase.
The Advance Dispatching project is part of the Smart Grid roadmap, already undertaken by Terna and CESI and aimed at continuously improving the dispatching solutions, which have always been important for the reliability of the electrical systems operation and whose further improvement is ultimately becoming urgent because of the rapid development of non dispatchable Renewable Energy Sources (RES), Photovoltaic (PV) and Wind Power (WP).
As is well known, one of the tasks of the TSO, both in the definition of the development plans of the transmission network and in the implementation of the operational planning procedures for the secure system operation, is to allow full and effective integration of renewable sources. With this the need to achieve the objectives of sustainability and affordability set for the electricity sector in the perspective of 2020, as well as ensuring, even in face of uncertainties related to the availability of non dispatchable sources, includes the maintenance of adequate standards of system reliability, in terms of both security and adequacy (specific object of the analysis carried out within the Advance Dispatching environment). All these are new issues for TSO’s around the world place us against emerging issues, forcing forward new solutions.