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Nestabilno delovanje hidroagregatov in preprečevanje prekomernega nihanja delovne moči agregata [Elektronski vir] = Unstable operation of hydroelectric generators and prevention of abnormal active power oscillations
Klasinc, Danilo ...
Namen članka je analiza izjemnega dogodka pri obratovanju agregata 2 na hidroelektrarni Zlatoličje. Medtem ko je agregat obratoval pri maksimalni vrednosti delovne moči in jalovi moči v kapacitivnem ...področju, se je nenadoma pričelo sinusno nihanje z naraščajočo amplitudo delovne moči, ki je presegla 20 MW. Omenjeni pojav je bilo možno ponoviti in ga tudi analizirati. V sistemih procesnega vodenja in zaščite agregata prvotno ni bila predvidena zaznava takšnega pojava, zato je dodan nov sklop, ki pri prevelikem nihanju delovne moči agregat iz mreže odklopi. Rešitev temelji na sodobnem industrijskemu krmilniku Siemens S7-300, za katerega je v višjem programskem jeziku SCL (različica Pascal-a) napisan program, ki spremlja potek trenutne vrednosti moči in izvaja predpisane ukrepe zaščite.
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