Aiming at the misoperation of gas relay in converter transformer,the reasons such as the structure design of cantilever beam,the winding deform ation with the large current and the coolers started at the sametime were concretely analyzed,the effective improvement measures about avoiding misoperation of gas relay were proposed.The application results show that the improved gas relay running is more stable,effectively reduces the possibility of the gas relay misoperation,which can provide reference for the design and manufacture,the hidden danger management and the technical renovation of the gas relay in the converter transformer in the follow-up DC transm ission project.
Ningxia Electric Power
misoperation of protection
the structure of cantilever beam
the winding deformation