Plate-free tray type offshore substation upper module

Abstract

The invention provides a plate-free tray type offshore substation upper module which comprises two layers of frame type steel structures, each frame type steel structure is formed by beams, columns and inclined struts, and main columns, structural columns and inclined struts are arranged between the upper layer of beams and the lower layer of beams; a prefabricated cabin or outdoor equipment is connected to a beam or a column of the frame-type steel structure to form an integral offshore transformer substation upper module. According to the frame type steel structure, a beam system serves as a framework of the plate-free tray structure type, grating channel areas are only arranged on a channel area, an equipment overhaul area and an embarkation gathering area on two layers of trays of an upper module of the plate-free tray structure type offshore transformer substation, and ribs and steel bed boards are not arranged on all the areas. A two-layer steel structure arrangement mode is adopted, original third-layer and fourth-layer beams, columns, ribs, plates and the like are omitted, meanwhile, first-layer and second-layer ribs, steel bed boards and the like are omitted, the using amount of steel can be reduced by about 50%-60%, the weight of an upper module is reduced, and then the choices of construction ship machine equipment are increased.

Description

technical field [0001] The invention belongs to the technical field of offshore wind power generation, and in particular relates to an upper block of a pallet-less offshore substation. Background technique [0002] As an important new force of renewable energy, offshore wind power is an important way to realize energy structure adjustment, low-carbon production mode and sustainable development. Offshore substation, as the center of power collection, boosting, power distribution and control of offshore wind farms, has become an important supporting facility of offshore wind farms, and is a key consideration when optimizing design. [0003] Similar to conventional offshore platforms, offshore substations consist of upper blocks and lower foundations. The traditional upper block is usually a four-deck steel structure platform. The main electrical equipment includes main transformers, GIS, switch cabinets, power distribution devices, communication relays, diesel generators, bat...

AI Technical Summary

Problems solved by technology

[0006]However, both of the above two modular offshore substations have limitations. In the first scheme, the steel consumption of bulkheads and other structures will be doubled, and the connections and The overall commissioning needs to be completed at sea, which takes a long time to operate at sea and high construction costs; the second option does not make a specific design for the prefabricated cabin structure of the module, and the traditional two-story deck structure uses a lot of steel, and does not consider the firewall between outdoor equipment and other structures

[0007] In conclusion, the upper block of offshore substation has problems such as heavy weight, long construction period, few options for hoisting marine machines, and high development cost

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