Method And Project For Detecting The Status Of Main Electrical Equipment in Substations

1. Concept of state detection
It refers to the evaluation of the operating status of equipment through various measurement, detection, and analysis methods, combined with the history and current situation of system operation, in order to understand and grasp the operating status of equipment, display and record the equipment status, handle abnormal situations, and provide basic data for equipment fault analysis, diagnosis, and performance evaluation.

2. Methods for detecting the status of each main device
1) Transformer
Transformer oil and gas chromatography analysis, partial discharge, insulation monitoring, etc;
2) Circuit breaker
Mainly including mechanical performance monitoring, contact electrical life monitoring, vacuum arc extinguishing chamber vacuum degree detection, etc;
3) GIS
SF6 gas monitoring (pressure, leakage, humidity), SF6 switch mechanical characteristics monitoring, switch electrical life monitoring, partial discharge monitoring;
4) Lightning arrester
Full current detection, resistive current detection, etc.