This paper presents a preliminary study of switchgear status detection and evaluation for distribution system

suggests that there are two ways which are sample detection and status monitoring for the switchgear status detection.According to current existing status detection methods

status evaluation can be divided into global evaluation and individual evaluation.Global evaluation is based on the results of the sample detection

and individual evaluation results take the status monitoring results as the primary reference.The status variables of the individual evaluation mainly include fundamental data

operation and patrol

gas pressure

infrared test

and partial discharge test.The application in Guangzhou proves the operability and reliability of this method.