Method for economically optimizing design scheme of electric collection system of large-scale offshore wind farm

Abstract

The invention provides a method for economically optimizing a design scheme of an electrical collection system of a large-scale offshore wind farm, which is characterized by comprising the following steps: 1) selecting the large-scale offshore wind farm, and carrying out fan string division on the wind farm in a power transformation area by adopting a regional radiation fuzzy clustering algorithm; and 2) searching an optimal cable topology link path for the fan after each partition and string division, wherein the step can be completed by using a graph theory and a minimum spanning tree Primer shortest path optimization algorithm; 3) calculating the total cost of the optimal collection topology under all the sub-methods according to the sub-regions and the types of the fan strings, seeking the optimal cost, and ending the algorithm. The combinatorial algorithm solves the problem of curse of dimensionality of a topological structure optimized by an exhaustion method, and provides support for simply and quickly solving the problem of economical efficiency optimization of a large offshore wind power plant collection system. And finally, example analysis of the combinatorial optimization algorithm is performed on a wind power plant example in northern peninsula of Shandong, and the effectiveness of the combinatorial optimization algorithm is proved.

Description

technical field [0001] The invention relates to the field of electrical collection system design of offshore wind farms, in particular to a method for economically optimizing the design scheme of the electrical collection system of large offshore wind farms. Background technique [0002] With the increase of the scale of offshore wind power, the collection and transmission system of offshore wind power needs to spend more costs, including investment costs, maintenance costs and loss costs, which are generally 2 to 3 times higher than those of onshore wind farms. For large-scale and long-distance offshore wind power generation technology, the cost of wind farms is very expensive, and the investment cost is very high. How to collect and send the energy from each wind turbine to optimize the overall cost has attracted attention, so optimizing the economics of the collection system of offshore wind farms is a research focus. The electrical collection system of offshore wind far...

AI Technical Summary

Problems solved by technology

Wind turbines are similar to loads. The arrangement of wind turbines in wind farms is just like the problem of site selection and capacity determination of substations in power grid planning. Different schemes will have a great impact on construction costs.

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