Fault diagnosis method and device for ship refrigeration system and storage medium

Abstract

The invention provides a ship refrigeration system fault diagnosis method and device and a storage medium. The method comprises the steps: collecting ship refrigeration system data including system operation data and working condition types corresponding to the operation data; and performing fault identification on the ship refrigeration system data by using the trained fault identification model,wherein the fault identification model is a support vector machine model and is used for classifying the system operation data to obtain a working condition type corresponding to the operation data,and a penalty factor and a kernel parameter of the support vector machine model are obtained based on particle swarm optimization. The method for optimizing the support vector machine based on the principal component analysis and the particle swarm optimization performs fault diagnosis on the ship refrigeration system so as to improve the fault diagnosis accuracy of the ship refrigeration system,shorten the diagnosis time and improve the fault diagnosis sensitivity.

Description

technical field [0001] The present invention relates to the technical field of ship turbine engineering, in particular to a method, device and storage medium for fault diagnosis of a ship refrigeration system. Background technique [0002] As an important auxiliary equipment, the refrigeration system can guarantee the air conditioning and food refrigeration of the ship. The internal structure of the refrigeration system is complex, which leads to unstable operating conditions, damages the freshness of food in the refrigerator, reduces the comfort of the crew, and shortens the service life of the equipment. [0003] The application of fault diagnosis technology in refrigeration systems started relatively late compared with other fields. There are three main types of commonly used fault diagnosis methods: methods based on quantitative physical models, methods based on qualitative physical models, and methods based on operating data. Among them, the diagnostic method based on ...

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Problems solved by technology

[0004] Aiming at the technical problem that the structure of the marine refrigeration system is complex and difficult to carry out fault diagnosis, a method, device and storage medium for fault diagnosis of the marine refrigeration system are provided

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