Method of measuring TEV and TGPR in gas insulated substation

The invention provides a method for measuring TEV and TGPR in a gas insulated substation. According to the method, the potential of a measured point is introduced to a high-voltage probe in a relay protection small chamber by using a shielded wire, voltage data on the high-voltage probe is acquired by using an automatic signal acquisition card, the acquired voltage data is corrected by using a mathematical model of a transmission line, and finally, accurate measured voltage data is obtained. According to the invention, the potential reference point is selected at the grounding lead-out wire in the relay protection cell (the potential is close to zero), and compared with a common TEV measurement method, the method provided by the invention not only uses simple equipment, but also has more accurate measurement results. According to the invention, TEV and TGPR data are accurately measured, the electromagnetic interference problem of GIS substation secondary equipment can be analyzed, and great reference value is