The licensed water How is an important design parameter tor run-of-river power plants. Yet, the actual water flow fluctuates markedly depending on the season and weather, two factors which also affect the river's water level. A level and flow controlsystem-like the one installed at the Laufenburg hydroelectric power plant-keeps the river's water level within the licensed range and optimizes the plant's power generation under the conditions prevailing ala given time. This and the automated start-up and shutdown of the turbine-generators enable the plant to be operated with virtually no personnel.
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