Research on the Multiple Status Parameter Detection Technology of the Substation Equipment

There are numerous types of high voltage equipment in substation including power transformers, Gas insulated switchgears (GIS), arresters and capacitive equipment, et al. It is very complicated to carry out the routine test and fault detection with so many equipment. In order to achieve universal and unified detection for different equipment, this paper designed a set of multi-status parameter detection system for power transformation devices, which can simultaneously detect multiple state quantities. Arresters, as an example, are detected and analyzed in this manuscript. Laboratory and field data demonstrated that the detection uncertainty of arrester current is 0.06% and the resistive current of arrester is detected continuously by this system. The multiple status parameter detection system provides a reference to solve the problem that the traditional detection system cannot achieve measurement constantly in substation.