Reliability distribution method and device for natural gas pipeline system

The invention provides a reliability distribution method and device for a natural gas pipeline system. The corresponding method comprises the following steps: firstly, establishing a target function according to a predetermined reliability influence factor of a subunit of the natural gas pipeline system and a preset reliability threshold value of the natural gas pipeline system; thirdly, establishing a fuzzy complementary judgment matrix according to the vectors of the reliability influence factors corresponding to the subunits; and finally, determining the reliability weights of the plurality of subunits according to the target function and the fuzzy complementary judgment matrix. According to the reliability distribution method and device for the natural gas pipeline system, scientific decision suggestions can be provided for the reliability of the units in the natural gas pipeline system, the reliability of the pipeline system is improved with more reasonable measures, and therefore the gas use requirement