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Offshore wind power collection system optimal design method considering electromagnetic environment constraint

A technology of electromagnetic environment and offshore wind power, applied in the direction of system integration technology, design optimization/simulation, information technology support system, etc., can solve problems such as fully considering submarine cable magnetic disturbance, and achieve the effect of realizing economy

Active Publication Date: 2018-11-16
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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Problems solved by technology

[0005] Most of the existing research on offshore wind power collection systems is from the perspective of economy and reliability, and the problem of submarine cable magnetic disturbance caused by the rapid development of offshore wind farms is not fully considered in planning. my country's offshore wind power is in a period of blowout growth. After many large and super large offshore wind farms are put into operation in the future, it is urgent to carry out relevant quantitative research and establish an accurate mathematical model on how to balance the optimal economic benefits and the sustainable development of the marine environment, so as to provide reference for the environmentally friendly construction of offshore wind farms

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  • Offshore wind power collection system optimal design method considering electromagnetic environment constraint
  • Offshore wind power collection system optimal design method considering electromagnetic environment constraint
  • Offshore wind power collection system optimal design method considering electromagnetic environment constraint

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Embodiment

[0070] In this case, the wind farm is a large-scale offshore wind farm with a total of 266 wind turbines with a unit capacity of 3.6MW, and the coordinates of the offshore wind turbines have been determined. 35kV submarine medium-voltage cables are used for connection between fans in the power collection system, and 220kV high-voltage cables are used for transmission cables. The type and price of the submarine cable are based on the data provided by the design institute, and according to the bearing capacity and short-circuit characteristics of the submarine cable, the current of a fan with a capacity of 3.6MW passing through a 35kV medium-voltage submarine cable is 3.6 / (1.732×35)=59A. The carrying capacity of a medium-voltage submarine cable with a cross-sectional area of ​​500mm2 is 630A. Since 630 / 59 is approximately equal to 10, a medium-voltage submarine cable with a cross-sectional area of ​​500mm2 allows a maximum current sum of 10 wind turbines with a capacity of 3.6MW....

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Abstract

The invention relates to an offshore wind power collection system optimal design method considering electromagnetic environment constraint. The method comprises the steps that (1) according to wind power plant fan coordinates, submarine cables and electrical equipment data, partitioned optimization is performed on a collection system; (2) the topological structure of the collection system after partitioned optimization is optimized, full-life-cycle cost C is used as an objective function of an optimization model, magnetic field limitation conditions are set for constraint, and multiple alternative optimization schemes are acquired; and (3) an electromagnetic pollution overall range of the collection system under each alternative optimization scheme and different constraint gradients is calculated, multi-party gaming assessment is performed on the multiple alternative optimization schemes, and an optimal scheme is obtained finally. Compared with the prior art, the method has the advantage of realizing an optimal plan with economy, environmental friendliness and reliability.

Description

technical field [0001] The present invention relates to the field of optimal design of offshore wind power collection systems, in particular to an optimal design method for offshore wind power collection systems considering the constraints of the electromagnetic environment. Background technique [0002] Offshore wind farms are rich in resources, have a high power generation time, and are suitable for large-scale development, and have become the focus of renewable energy development. With the increase of development intensity, the number of offshore wind farms is increasing all over the world, and the scope of site selection is gradually pushed to the far sea, and its installed capacity, cable transmission power, and voltage level have all been significantly improved. In the long run, it is an inevitable trend that the number and capacity of offshore wind farms will be greatly increased, and the resulting marine ecological imbalance cannot be underestimated. [0003] With t...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G06Q10/06G06Q50/06
CPCG06Q10/06393G06Q50/06G06F30/20Y04S10/50
Inventor 符杨杨赛松魏书荣刘璐洁
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER
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