Abstract
Using the phase signal of water pressure oscillation in inlet of turbine as auxiliary signal of governor can restrain the water pressure oscillation of pipe. Refer to the structure of power system stabilizer, two structure types of leading phase compensation link are given in this paper, and its structure design and parameters assignment are analyzed. Based on the operation simulation system of the hydro turbine generating sets, simulation research is carried out from two aspects, (i) effect of two structure types phase compensation link on inhibitory effect of water pressure; (ii) effect of the amplitude gain of compensation branch on the compensation control. Research shows that the leading phase compensation link proposed can effectively reduce the water pressure oscillation for transient process with high water pressure fluctuation, but its effect on normal active power regulation is very little.
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