Layout structure and size calculation method of valve hall of offshore flexible DC converter station

Abstract

The present invention relates to the technical field of offshore wind power flexible direct current transmission engineering, and discloses an arrangement structure of valve halls of an offshore flexible direct current converter station, including valve halls, the number of which is two, and the two valve halls are arranged symmetrically. There are positive pole A-phase bridge arm, positive pole B-phase bridge arm and positive pole C-phase bridge arm, and the other valve hall is equipped with negative pole A-phase bridge arm, negative pole B-phase bridge arm and negative pole C-phase bridge arm, and two valve halls The six bridge arms inside are symmetrically arranged in "ABCCBA". The invention also discloses a size calculation method for the layout structure of the valve hall of the offshore flexible DC converter station. The valve hall layout structure and size calculation method of the offshore flexible DC converter station of the present invention has simple layout and wiring, clear wiring of the incoming and outgoing lines, and the DC field does not need to pass through the high and low pipe busses to carry out the DC pole line confluence, which can greatly reduce the The length and width of the valve hall of the offshore flexible DC converter station are small, which reduces the project cost.

Description

Layout structure and size calculation method of valve hall of offshore flexible HVDC converter station technical field The present invention relates to offshore wind power flexible direct current transmission engineering technical field, be specifically related to a kind of offshore flexible direct current converter Flow station valve hall layout structure and size calculation method. Background technique Converter valve is the core electrical equipment of flexible direct current transmission project, in engineering construction, it is usually a converter valve and its The electrical equipment on the AC and DC sides is provided with a dedicated valve hall. Especially for offshore flexible DC transmission projects, the valve hall is an ocean The area with the largest space size and the heaviest electrical equipment in the platform of the upper flexible DC converter station greatly determines the offshore area. The overall size and platform layout plan of the flexible...

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Problems solved by technology

In the past, an onshore flexible DC converter station usually arranged a complete converter unit valve group in a single valve hall. The layout structure of the valve hall of the station cannot meet the compact structure requirements of the offshore flexible DC converter station, and the layout structure of the valve hall of the existing onshore flexible DC converter station is that the upper and lower bridge arms of the converter valves are arranged adjacent to each other, resulting in The DC field needs to carry out the confluence of the DC pole lines through the interleaved commutation of the high and low tubes, the layout and wiring are complicated, and the size of the DC field increases

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