Multi-subset probability processing method for boiler fault diagnosis

• Main Authors: BAI YU, CHEN SHUO, GU YANGYANG, AN ZHONGYU, LIN NAN, ZHOU YANG, TANG LIZHI, JIA RENFENG, MA YUTING, YANG ZHAOHAN
• Format: Patent
• Language: Chinese; English
• Published: 29.09.2020
• Subjects: BLASTING; CALCULATING; CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FORCOMBUSTION CHAMBERS, e.g. FIREBRIDGES; COMBUSTION APPARATUS; COMBUSTION PROCESSES; COMPUTING; COUNTING; DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FORADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORYOR FORECASTING PURPOSES; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDEDFOR; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS INCOMBUSTION CHAMBERS; ELECTRIC DIGITAL DATA PROCESSING; HEATING; LIGHTING; MECHANICAL ENGINEERING; PHYSICS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTIONAPPARATUS; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE,COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTINGPURPOSES, NOT OTHERWISE PROVIDED FOR; WEAPONS

The invention discloses a multi-subset probability processing method for boiler fault diagnosis, and relates to the technical field of boiler fault diagnosis. The objective of the invention is to solve the problems of relatively tedious process, relatively long processing period, information loss in the processing process, small application range and relatively poor universality of an existing diagnosis method. The method comprises the steps of 1, determining an identification framework, and obtaining a basic probability of faults under the identification framework; 2, calculating a single subset probability support degree according to the basic probabilities of the multiple groups of faults; 3, calculating a multi-subset probability distribution ratio according to the single subset probability support degree calculated in the step 2; 4, calculating a multi-subset probability distribution probability according to the multi-subset probability distribution ratio calculated in the step 3;and 5, calculating the f