Developing a Supervisory Controller for Hybrid Power System: Fernando de Noronha Island Case

Abstract

This paper presents the development of a supervisory controller and the main challenges of integrating wind and solar energy into an existing grid with 100% diesel generation. The supervisory controller has been developed for keeping the safety and stability of the network a R&D project financed by the Utility CELPE. The controller keeps the balance of power at all the time and monitors the stability of the network. The controller reads the power production from all sources and define the load in the network and it does two main tasks: the first is to evaluate the stability of the power system; the second is to estimate the diesel production for the next 2 hours. The diesel dispatch is done based on the power and load forecasts. The main features of the supervisory are first of all implemented using a open source software Scada and using the Matlab ® as the main calculus processor, secondly the controller is flexible to operate with different communication protocols, to work with different forecast tools and to act as desired by the power system operator. Actually the power system operator does not accept the automatic control of the diesel units on the other hand, the renewable sources should be automatic controlled, however this feature is flexible in the supervisory controller.

Wind speed persistence at the Fernando de Noronha archipelago, Brazil

“…It was the site of the first large wind turbine for commercial operation installed in South America in 1992 (Araújo and Freitas 2008), but it was (unfortunately) destroyed by lightning in 2009. Currently the energy supply for the island comes mainly from diesel generators, and there has been a long-standing effort to develop efficient technological solutions for energy supply based on integration of wind and solar resources (Rosas 2013).…”