CONTROL SYSTEM FOR RUN-OF-RIVER HYDROELECTRIC PLANT

摘要

AbstractA control system for a hydroelectric power plant of therun-of-river type wherein the load on the turbine-generatorunits is matched to the flow of the river so that the unitsoperate at the maximum head available for existing flowconditions to produce the maximum energy available from theriver flow for the installed capacity of the plant andwithin the allowable, safe operating capability range of theturbine-generator units. Reservoir water level sensorsprovide a signals indicative of changing water level,sensors for generator electrical and thermal operatingcharacteristics provide a signals related thereto, and acontrol connected to the water level sensors, to the generatorsensors and to the turbine governor adjusts the turbine flowcontrol devices to change the turbine power in response tochanging river level within the safe and allowable operatingrange of the generator. Adjusting the turbine power to matchthe water available either when the reservoir level increasesor decreases maintains maximum when a for the power plant toobtain maximum energy therefrom. A tailwater level sensorand cavitation control also control the turbine flow controldevices in an appropriate manner when a condition of cavitationis being approached. The control system typically is employedwith a plurality of turbine-generator units in a hydro-electric power plant.