Transient characteristic detection system and transient characteristic detection method for electronic voltage transformers

The invention discloses a transient characteristic detection system and a transient characteristic detection method for electronic voltage transformers. The system comprises a transient test condition simulation unit, a high-frequency voltage divider, a merging unit and a transient characteristic detection unit. The transient test condition simulation unit outputs a primary high voltage U1, and the primary high voltage U1 is converted into a standard source signal U2 of the transient characteristic detection unit through the high-frequency voltage divider. A detected electronic voltage transformer is connected in parallel with the high-frequency voltage divider, and a sampling value of the detected electronic voltage transformer is sent to the transient characteristic detection unit through an optical fiber interface of the merging unit and used as a detected signal of the transient characteristic detection unit. The transient characteristic detection system and the transient characteristic detection method of the invention can be used for reliably and perfectly detecting the transient characteristic of the electronic voltage transformer to improve the transient performance of the electronic voltage transformer and provide technical support for safe and stable operation of the electronic voltage transformer.