Effect of Engagement in Power and Frequency Control on the Service Life of Steam-Turbine Power Units

Abstract

To assess the effect of engagement in power and frequency control on the level of wear of the steam-turbine power units, a method for calculating the remaining life based on the equivalent operation time is proposed. By using a power-generating unit equipped with the K-300-240 turbine as an example, a number of equivalent hours of turbine operation were calculated reflecting the engagement of the power unit in the rated primary frequency control and automated secondary power and frequency control. The effect of the loading rate of the steam-turbine power units, operating in the rated and sliding steam pressure modes, on the level of equipment wear within various ranges of power increase was studied.