Research on Field Calibration Method of GIS UHF Sensor Based on S-parameter
UHF method detects UHF electromagnetic wave signal under the condition of GIS equipment failure by sensors.In order to solve the problem of the deteriorating stability of GIS operation caused by abnormal sensitivity of sensors,the field calibration method of GIS UHF sensor based on S parameter is studied.A two port network is used to describe two UHF sensors in GIS equipment and the GIS structure between them.The S-parameter network is embedded.By measuring the transfer function between two adjacent UHF sensors,the original single end insertion loss curve,the average value of initial single end insertion loss and the transverse relative error of initial single end insertion of UHF sensors at the same structure position in GIS equipment are detected,the performance and layout of UHF Sensors in GIS are obtained,and the operation situation of UHF Sensors in GIS under installation and operation conditions is detected with high precision.The experimental results show that the method is not affected by the injection pulse width,and can accurately verify the sensitivity of the sensor and improve the stability of GIS operation.
S-parameterGISUHFfield calibration of equipment failuretransfer function
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