With the continuous improvement of automation level, there are more and more types of power system faults, and the complexity of relay protection action is also increasing. Fault recorder plays an increasingly important role in the treatment of power grid accidents. For operation and maintenance personnel, it is more important to understand the internal component structure and working mode of fault recorder, and learn how to deal with common faults of fault recorder, which will add a safety barrier for the safe operation of power grid.

Operation and maintenance personnel should understand the on-site access and copy method of fault recorder graph. When the protection management machine cannot access the waveform of fault recorder, the on-site access method should be adopted to analyze and judge the fault in time

Strengthen the inspection of the fault recorder, and regularly trigger the fault recorder manually. The manual trigger should be arranged at the time of heavy load on the day, to check whether it is in normal working condition, to check whether the recording graph is normal, and to report the problem immediately and contact for handling.

Formulate pre emergency plan to ensure that fault recorder can be transferred smoothly in case of emergency, improve the efficiency of fault handling, strengthen technical training for operation and maintenance personnel on the station, make full use of the opportunity of fault recorder maintenance, and ask the supplier's personnel to explain on site.