Direct-current offshore wind plant series-parallel connection mode current collection system planning method

A technology for system planning and wind farms, applied in information technology support systems, data processing applications, forecasting, etc., can solve the problems of wind farm abandonment, wind abandonment, and not being able to solve them well

Active Publication Date: 2021-01-26
SHANGHAI UNIVERSITY OF ELECTRIC POWER +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The technical effect of this new technology compared to previous designs was that it had better performance than older versions but also improved efficiency or reduced costs associated therewith.

Problems solved by technology

This patented technical solution described in the patents describes how offshoys can generate electricity efficiently without causing issues such as transmitting losses or requiring expensive equipment due to limitations associated with traditional systems. Specifically, there was an issue where some older units had difficulty connecting multiple offshores that produced varying levels of voltage while maintaining reasonable safety standards. To address these concerns, proposes converting AC outputs into serial connections instead of direct ones (DC). Additionally, considering the use of submersible cables along oceanic shelf roads may result in potential failure under harsh weather conditions.

Method used

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  • Direct-current offshore wind plant series-parallel connection mode current collection system planning method
  • Direct-current offshore wind plant series-parallel connection mode current collection system planning method
  • Direct-current offshore wind plant series-parallel connection mode current collection system planning method

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Embodiment

[0065] In this example select as figure 1 The offshore wind farm shown has 15 wind turbines in total, the outlet voltage of the wind turbines is 50kV DC voltage, and the distance between the wind turbines is about 7 times the diameter of the wind rotor.

[0066] (1) Topological structure analysis

[0067] The planning results of the existing optimization method are shown in Figure (4a) and Figure (4b); through the optimization method proposed in the present invention, the results obtained are shown in Figure (4c) and Figure (4d). Wind cost optimization method When optimizing the series-parallel power collection system, the submarine cable wiring of the wind farm tends to run from northwest to southeast, roughly perpendicular to the direction in which the land converter station is connected to the wind farm. However, if the proposed method of the present invention is used The optimization method of the submarine cable tends to run from southwest to northeast, roughly perpendicula

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Abstract

The invention relates to a direct-current offshore wind plant series-parallel connection mode current collection system planning method. The method comprises the following steps: 1) constructing an abandoned wind electric quantity model of an offshore wind plant under series-parallel connection wiring; 2) considering the wind curtailment electric quantity to construct an offshore wind farm directcurrent series-parallel connection current collection system optimization model; (3) performing topological optimization of the offshore wind plant direct-current series-parallel connection mode; and4) calculating the total cost in the full life cycle in a given topological wiring mode according to the offshore wind plant DC series-parallel current collection system optimization model until the topological structure with the minimum total cost is obtained, and otherwise, returning to the step 3) to perform topological optimization. Compared with the prior art, the method has the advantages that the operation characteristics of the direct-current series-parallel connection wind power plant are considered, the economy is better, and the actual engineering requirements are met.

Description

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Claims

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Application Information

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Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER
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