the principle, structure and output signal of an electronic voltage instrument transformer based on a resistive voltage divider are different with that of a traditional voltage transformer, so the stability and reliability should be tested and improved during the practical run. this paper classifies the problem of the electronic voltage instrument transformer and analyses them that is based on the operation data of the 10kV electronic voltage transformer in Fengzhou digital substation. The analysis results show that the main body runs well, but the signal could be affected by the accessories (power signal distributor signal transmission cable). So in the end the article gives some suggestions that the problem could by settled by improving the production design and the maintenance.
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