Offshore direct current power transmission system
A technology of DC transmission system and DC power, which is applied in the direction of AC network circuits, electrical components, circuit devices, etc., can solve the problems of difficult to meet the construction level, the construction of large-capacity offshore converter stations is difficult, and achieve the effect of reducing capacity waste.
Pending Publication Date: 2022-02-11
EXAMING & EXPERIMENTAL CENT OF ULTRAHIGH VOLTAGE POWER TRANSMISSION COMPANY CHINA SOUTHEN POWER GRID
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Problems solved by technology
[0003] However, the offshore DC transmission system in the traditional technology has a problem that it is difficult to construct a large-capacity offshore converter station, and it is difficult to meet the existing domestic converter station platform construction level.
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[0021] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the application are given in the drawings. However, the present application can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this application more thorough and comprehensive.
[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terms used herein in the specification of the application are only for the purpose of describing specific embodiments, and are not intended to limit the application.
[0023] It can be understood that the terms "first", "second" and the like used in this application may be...
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The invention relates to an offshore direct current power transmission system. The offshore direct current power transmission system comprises a first monopole offshore rectifier station, a second monopole offshore rectifier station and an onshore inverter station. The first monopole offshore rectifier station is used for rectifying alternating current electric energy transmitted by the first offshore wind plant into direct current electric energy of first voltage and then outputting the direct current electric energy to the onshore inverter station. And the second monopole offshore rectifier station is used for rectifying the alternating current electric energy transmitted by the second offshore wind plant into direct current electric energy of second voltage and outputting the direct current electric energy to the onshore inverter station. The grounding end of the second monopole offshore rectifier station is connected with the grounding end of the first monopole offshore rectifier station. The onshore inverter station is used for inverting the direct current electric energy of the first voltage and the direct current electric energy of the second voltage and then outputting the direct current electric energy to an alternating current power grid through the power transmission end of the onshore inverter station. According to the offshore direct current power transmission system, the capacity of a single offshore rectifier station is reduced, so that the construction difficulty is greatly reduced, and the problem of capacity waste is reduced.
Description
technical field [0001] The invention relates to the technical field of direct current transmission, in particular to an offshore direct current transmission system. Background technique [0002] As a non-polluting and renewable new energy, wind energy has great development potential. Offshore wind farms have gradually become a new trend in the development of wind power due to their advantages such as stable wind speed, no occupation of land resources, and basically no environmental impact. As the latest technology of global wind power, offshore wind power has attracted much attention, and it is the new technology most likely to reduce the cost of wind power generation in the future. With the increase of installed capacity and transmission distance of offshore wind farms, the application of HVDC transmission technology in offshore wind power grid integration will become more and more extensive. [0003] However, the offshore HVDC power transmission system in the traditional...
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IPC IPC(8): H02J3/36H02J3/38
CPCH02J3/36H02J3/381H02J2300/28Y02E60/60
Inventor 马向辉周全廖修谱吴冇蔡廷雷王立平毛强熊纽孙燕飞余昊文呙锴聂聪颖
Owner EXAMING & EXPERIMENTAL CENT OF ULTRAHIGH VOLTAGE POWER TRANSMISSION COMPANY CHINA SOUTHEN POWER GRID