CMS message self-recording method and system for domestic secondary equipment

The invention discloses a method and a system for realizing CMS communication message self-recording based on existing hardware resources of secondary equipment of a domestic substation. A message self-recording software module is preset on an existing board card of domestic secondary equipment. After the message self-recording function is started, when the communication abnormity identification module identifies a CMS communication abnormity event, message storage is triggered, and the CMS communication message in the abnormity occurrence time period can be recorded for problem analysis and positioning. The message recording function can be adjusted according to the configuration parameters so as to adapt to specific requirements of different communication anomalies. The method can provide network messages before and after a problem occurrence time period when a CMS communication problem occurs, is convenient for positioning and analyzing the problem, and has the advantages of low economic cost, convenience