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Flexible direct-current offshore converter station connected with 66kV current collection line

A technology of flexible DC and current collector lines, applied in the direction of power transmission AC network, climate sustainability, sustainable manufacturing/processing, etc., can solve the problem of no flexible DC offshore converter station, etc., achieve convenient operation and maintenance, and simplify wiring , the effect of concise channel

Active Publication Date: 2021-03-16
POWERCHINA HUADONG ENG COPORATION LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, there is no flexible DC offshore converter station specially suitable for the connection of 66kV collector lines

Method used

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  • Flexible direct-current offshore converter station connected with 66kV current collection line
  • Flexible direct-current offshore converter station connected with 66kV current collection line
  • Flexible direct-current offshore converter station connected with 66kV current collection line

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Embodiment Construction

[0026] The present invention will be described in detail below in conjunction with accompanying drawing:

[0027] Such as Figure 1~4 As shown, a flexible DC offshore converter station connected to a 66kV collector line provided by the embodiment of the present invention is provided with an AC field 100, a valve hall 200, a DC field 300, and an auxiliary production area 400, and the AC field 100 is provided with a 66kV AC power distribution device (GIS) 110, connection transformer 120, 330kV AC power distribution device (GIS) 130, a converter valve 210 and its power distribution device 220 are set in the valve hall 200, and a bridge arm is set in the DC field 300 A reactor 310 and a DC power distribution device 320. The auxiliary production area 400 is equipped with station auxiliary systems, water supply and drainage and fire protection systems, and HVAC systems. The flexible DC offshore converter station is also provided with a cable shaft 600 and a cable overhead layer 500...

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Abstract

The invention provides a flexible direct-current offshore converter station connected with a 66kV current collection line. The flexible direct current offshore converter station is arranged in a multi-layer mode and comprises an alternating current field, a valve hall, a direct current field and an auxiliary production area. The valve hall comprises a converter valve and a power distribution device thereof, and is positioned at the lowermost part of a converter station; the direct-current field comprises a bridge arm reactor, a direct-current power distribution device and a top space which isvertically adjacent to the valve hall and arranged on one side of the converter station; and the alternating current field comprises a 66 kV alternating-current power distribution device, a connectiontransformer and a 330 kV alternating-current power distribution device and is arranged in the top space of the other side of the converter station. According to the offshore wind power flexible direct current sending-out system, a current collection system is directly connected into a converter station, the 66 kV alternating current collection line is directly connected into the offshore converter station, wiring of the offshore wind power flexible direct current sending-out system is simplified, and investment and maintenance cost of a sea rising voltage station in a traditional deep sea wind power plant are saved; and moreover, the converter station is reasonable and compact in arrangement and is reduced by about 40% in cost compared with an existing offshore converter station scheme with a same capacity, and the construction cost of a deep sea wind power plant is effectively reduced.

Description

technical field [0001] The invention relates to the technical field of offshore wind power and flexible DC transmission, in particular to a flexible DC offshore converter station connected to a 66kV collector line. Background technique [0002] In recent years, the development of global offshore wind power has shown the characteristics of large-scale, clustered and far-reaching offshore. The deep sea with an offshore area of ​​more than 100km and a water depth of more than 50m has wider sea area resources and greater wind energy resources. China has a long coastline, a large area of ​​available sea area, and abundant reserves of offshore wind resources. Considering factors such as resource potential, absorption capacity, and the increasing shortage of offshore land, deep-sea wind power will become an important direction for the development of offshore wind power in the future. [0003] At present, the grid connection methods of offshore wind power transmission are mainly d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/36
CPCH02J3/36Y02P80/20Y02E60/60Y02E10/76
Inventor 徐晗谢瑞杨文斌陈晴傅春翔王霄鹤李景一徐鸥洋林斌冯嘉琦陈云江李剑锋
Owner POWERCHINA HUADONG ENG COPORATION LTD
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