Author(s): Derek M. Foulds
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Abstract: Hydraulic sources of peak and emergency electrical energy have become extremely attractive as the cost alternatives continue to escalate. One way of getting the additional power fairly reasonably seemed to be to re-develop existing, "run of the river", stations with the result that the river would be required to pass virtually freshet flows in any month of the year. Operating requirements required flow to go from 0 to 420 cubic meters per second in five minutes, and continue at that level for up to ten hours. Water levels were expected to rise several meters, and velocities would be at least three times the previous winter-time maximum, consequently, there were grave doubts concerning the effects on the ice cover. A river system in Ontario was subjected to tests in winter, and its peak output was increased by a factor of three. A new station was constructed on another river with a peak output five times greater than the dependable December flow. In the paper, the tests, problems, and techniques for obtaining the desired results are described.
Year: 1981