Systems to optimise conversion efficiencies at Ontario Hydro's hydroelectric plants

Optimal dispatch systems at hydroelectric power plants manage the energy conversion process such that, under all conditions, the station efficiency is maximised. This paper describes an optimal dispatch system which has proven to be successful at two installations, one on the Nipigon river controlling three stations near Thunder Bay, Ontario, and the other at R.H. Saunders generating station on the St. Lawrence river near Cornwall, Ontario, Canada. The validated benefits amount to 15GWh per year, which is about 0.25% of the annual production at the respective stations. Secondary benefits arising from this system include increased decision making assistance, improved accessibility to plant data and an overall improvement in operational performance.