The invention relates to an equipment
fault rate calculation method and
system for an offshore converter
station, and the method comprises the following steps: obtaining fault data of offshore converter
station equipment in a preset time, and dividing the offshore converter
station equipment into components according to functions; performing
correlation analysis on the fault
time sequence by using an autocorrelation function to obtain a fault type; if the fault is a static fault, constructing a
confidence interval by using a large number theorem and normal distribution to obtain an initial
fault rate of each component; if the fault is a dynamic fault, obtaining an initial
fault rate of each component by using a
time sequence analysis model; constructing an environment correction coefficient model, and correcting the initial
failure rate of each component to obtain a corrected component
failure rate; analyzing each component by using an
analytic hierarchy process to obtain a fault weight, and combining the fault weight and the corrected component fault rate to obtain the overall fault rate of the overall equipment of the offshore converter station; and obtaining an
annual average fault time expected value according to the overall fault rate.