DC field polar isolating switch terminal connection fittings for 800 kV converter station

Abstract

The invention relates to a DC field polar isolating switch terminal connection fittings for an 800 kV converter station. The DC filed polar isolating switch terminal connection fittings for the 800 kV converter station comprises an L-shaped overcurrent connection support plate, and the overcurrent connection support plate comprises a first support plate and a second support plate which are arranged in an integrated mode and perpendicular to each other; the first support plate comprises an outer board and an inner board which are arranged in an integrated mode, and the length of the outer board is greater than that of the inner board, so that the outer board and the inner board form a boss structure; a plurality of cable clamp bodies are fixedly connected with the inner side of the inner board and the outer side of the second support plate respectively, and at least one cable clamp cover plate is fixedly connected with each cable clamp body; the cable clamp bodies are connected with the overcurrent connection support plate through fasteners, and the cable clamp cover plates are connected with the cable clamp bodies through other fasteners.

Description

technical field [0001] The invention relates to an electric power fitting, in particular to a fitting for connecting terminals of a DC field pole line isolating switch for an 800kV converter station. Background technique [0002] At present, my country has become a major DC power transmission country with the most DC projects in operation and under construction, the largest capacity and the longest lines in the world. Valve hall fittings in a DC converter station generally include valve hall connecting fittings, halo balls, shielding half rings and some transition fittings. With the increase of DC transmission voltage, valve hall fittings have increasingly become an indispensable and important part of the valve hall. The valve hall fittings of converter stations being implemented in my country are basically purchased from abroad, and the cost is relatively high. Considering that there are many ultra-high voltage and ultra-high voltage direct current transmission converter s...

AI Technical Summary

Problems solved by technology

Considering that there are many ultra-high voltage and ultra-high voltage direct current transmission converter stations in my country's long-term planning, if the valve hall and direct current field fittings of each project are purchased from foreign parties, not only the cost is high, but also the construction period cannot be guaranteed. It is also not in line with the policy of localization of core technology that our country has always implemented, that is, we must adhere to the road of independent research and development, and realize the localization of fittings for ultra-high pressure and even ultra-high pressure valve halls.

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