Energy Savings Coming from Variable Speed Driving Applications at Hydropower Plants

摘要

At smaller power ratings, the auxiliaries enlisted into one hydro-electric power plant-HPP playrnone decisive role, by keeping ready for safer operation, the entire HPP, well known for their rapid start-uprnand dynamic participation to cover the peak-loads in a large electric power system.rnThe auxiliaries' specificity and splitting categories mainly covers either some motors involved into thernvariable services like cooling water pumping system and fans, and which could -at their turn- better operate,rnat variable speed - otherwise the additional wear and energy excessive consumption means aspects ofrnweakness; other motors, e.g. like those belonging to the pressurized oil system, are exceedingly in start-stoprnregimes, wearing excessively the switchgear electric equipment and so getting down the power unit's wholernreliability.rnThe answer could be the power electronics specific tools, quite knocking at the HPP's door today, likernfrequency converters and soft-start-soft-stoppers Their significant impact here will be shortly analyzed byrnthe paper and through its useful drawn conclusions, it does to encourage the spreading of such modernizingrnefforts.