Power system fundamental frequency load shedding wheel load line Save Setting Method

Power system fundamental frequency load shedding Save wheel load line setting method, to a system analysis. So far no practical method for directly tuning frequency load shedding amount based on the detailed time-domain simulation is proposed. The present invention comprises the steps of: separately for each program in the manner set period of time, the frequency decreased more than contingency frequency deviation threshold into a corresponding set of program failure mode to be checked; embodiment according to the duration of the program, it appears calculated probability; Save determining frequency load shedding means and the maximum value of the ratio of carrier contained in a maximum proportion of each round of subtraction; Save by determining loading of each wheel UFLS apparatus, until tuning to be planned manner corresponding to the setting to be transient fault safety margin is greater zero frequency or frequency transient load shedding can not be improved safety margin; performing frequency transient fault safety check to be evaluated in parallel. This aspect of computing speed, and improved the accuracy of adaptive tuning scheme.