The island of Ramea, on the south coast of Newfoundland, has a current hybrid power system which consists of a diesel plant, wind turbines, and a hydrogen based energy storage system. Our analysis indicates that the annual contribution from the hydrogen storage to the system will be less than 1%. We propose a pumped hydro based energy storage system for Ramea.
Our study shows that a 4000m3 water reservoir could be built on the Man of War hill for excess wind energy storage. The reservoir will have a head of 63m and can use sea water. A 150kW pumping and turbine station could be built near the base of the Man of War hill next to the available water and existing transmission line. Our analysis indicated that such a pumped hydro energy storage system will lead to 37% renewable energy fraction and result in an acceptable electrical transients in the system. By using a synchronous machine based turbine unit and an induction motor based pumping unit a pumped hydro energy system can be connected directly to the system. A variable speed system is also a possibility. We believe such an energy storage system can be built and maintained using locally available technology and work force. We recommend a full feasibility study of such an energy storage system for Ramea, Newfoundland. We feel that pumped hydro energy storage is the best energy storage option for many communities in Newfoundland and Labrador whose current source of electric power is diesel power.
View the full report: [url]http://www.mun.ca/harriscentre/reports/arf/2009/ARF_Iqbal_RameaHybrid.pdf[/url]