UHV DC converter station split wire clamp fittings and branch clamps

Abstract

The invention provides a divided conductor clamp fitting for an EHV (Extra-High Voltage) DC (Direct Current) convertor station and branch clamps thereof. The clamp fitting comprises a bus-bar clamp, wherein one end of the bus-bar clamp axially extending along a busbar hole is fixedly provided with at least two branch clamps peripherally distributed around the busbar hole; each branch clamp comprises a finger-type support body and a pressing block, a branch hole is defined by the finger-type support body and the pressing block, and the finger-type support body is in an L shape; the finger-type support body is provided with an axial installation section axially extending along the branch hole and a radial installation section which is integrally installed along the radial extending direction of the branch hole or is separately and fixedly arranged on the busbar clamp, the pressing block is located inside the L-shaped finger-type support body and is fixedly arranged on the axial installation section, and the opposite sides of the axial installation section and the pressing block are provided with branch slots for forming the branch holes; the outside parts of the corners of the L-shaped finger-type support bodies are connected in an circular arc transition way, and the pressing blocks on the branch clamps are located inside the corresponding branch clamps toward the central axes of the busbar holes. The clamp fitting is convenient to install and use and good in anticorona.

Description

technical field [0001] The invention relates to a fitting for clamping a split conductor of an ultra-high voltage direct current converter station and a branch clamp thereof. Background technique [0002] At present, most of the equipment clamps for AC substations put into operation in my country are two-split and four-split wire equipment clamps, while the rated capacity and rated current delivered by DC UHV converter stations are relatively large, so equipment clamps with six-split wires are required Meet the requirements of UHV DC converter station. [0003] In the Chinese utility model patent specification whose authorized announcement number is CN203039122U, a wire connection fitting is disclosed, which is used to conduct the corresponding conduction between the pipe busbar and each branch wire. For the busbar hole of the busbar, four branch clamps uniformly distributed around the circumference are arranged on the end of the busbar clamp extending along the axial direct...

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a branch line clamp for the split wire clamp fittings of UHV DC converter station to solve the problem that in the prior art, the pressing block of each branch line clamp is arranged outside the corresponding branch line clamp, resulting in a gap between the pressing block and the finger-shaped support body. The technical problem that the seam between them is located on the outside of the branch line clamp; at the same time, the present invention also provides a split wire clamp fitting for UHV DC converter stations using the above branch line clamp

Images