500kV high-voltage outgoing line test device

Abstract

The invention relates to the field of high-voltage outgoing line test devices, and discloses a 500kV high-voltage outgoing line test device. The device comprises a to-be-tested sleeve, a sleeve mounting flange, an upper oil filtering valve, an upper section ascending flanged base, a manhole, a lower section ascending flanged base, an oil storage cabinet, a connecting pipe, a moisture absorber, an inclined strut square pipe, a lower oil injection valve, a bottom fixing plate, a transportation cover plate, a to-be-verified pressure equalizing ball, an insulating bracket, a pressure equalizing ball and a jacking insulating bracket. According to the 500kV high-voltage outgoing line test device, a to-be-tested sleeve can be installed to verify the insulation performance of the voltage-sharing ball; and continuous regular vibration, random vibration and impact can also be applied from the outside of the device to assess the anti-seismic property of the to-be-tested voltage-sharing ball, the voltage-sharing ball and the voltage-sharing pipe are clamped and jacked through the insulating support, the anti-seismic strength is ensured, the to-be-tested sleeve and the voltage-sharing ball of the outgoing line test device can be replaced, and the outgoing line test device has wide application. Accurate and credible test verification can be provided for network side outgoing line design of the extra-high voltage converter transformer.

Description

technical field [0001] The invention relates to the field of high-voltage outlet test devices, in particular to a 500kV high-voltage outlet test device. Background technique [0002] The design structure and operating characteristics of UHV converter transformers lead to a significant increase in the risk of failure compared with ordinary transformers. In the past, the pressure equalizing ball on the side of the converter transformer adopts a double-ring structure with upper and lower petals. The upper ring is directly buckled on the lower ring and fixed by a simple insulating bracket. Under the actual working condition where the coil vibration on the grid side of the converter transformer is extremely strong, the traditional structure has the risk of the pressure equalizing ball collapsing, which directly leads to the ineffective shielding of the electrodes at the bushing connection part on the grid side and the occurrence of discharge failures. [0003] Therefore, we adop...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a 500kV high-voltage outgoing line test device, which solves the problem of defects in the existing test device

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