A closed-loop start-up control strategy and its simulation studies for hydroelectric generating units

A new control strategy, called closed-loop start-up, is proposed in this paper. With an expected frequency preset value behavior, the unit frequency always tracks it in the closed-loop start-up, so that it can expedite start-up process. This strategy is realized by software so that it adapts to variable parameters for different units. In this paper, visualization methods are used for start-up simulation studies. These simulation results show that the proposed control strategy is satisfactory.