Method for selecting type of topological structure of offshore wind power plant current collecting system

Abstract

The invention discloses a method for selecting the type of a topological structure of an offshore wind power plant current collecting system. The method comprises the following steps of estimating the construction cost of the offshore wind power plant current collecting system; estimating the reliability loss of an offshore wind power plant; estimating the economic cost of the offshore wind power plant current collecting system; primarily selecting the type of offshore wind power plant current collecting system topology to obtain an optimal topology set; performing electric modular modeling simulation on the optimal topology set of the offshore wind power plant current collecting system, and on the basis, estimating electrical voltage supply amount loss of the topological structure; estimating the comprehensive cost of the optimal topology set of the offshore wind power plant current collecting system; selecting the type of the optimal topology set of the offshore wind power plant current collecting system, and selecting the optimal topology of the offshore wind power plant current collecting system. The method is simple and practical, multiple factors required to be considered during type selection of the offshore wind power plant topological structure are uniformly concluded into cost, and the problem that the dimension is not consistent is solved, so that the result is more simple, and quick type selection of the topological structure of the offshore wind power plant current collecting system is facilitated.

Description

technical field [0001] The invention belongs to the technical field of offshore wind power generation, in particular to a method for designing and selecting a topological structure of an offshore wind farm power collection system. Background technique [0002] In recent years, offshore wind power has received more and more attention. According to the "Emerging Energy Industry Development Plan", my country's preliminary plan is to install 150 million kilowatts of wind power nationwide by 2020, including 30 million kilowatts of offshore wind power. With relevant incentive policies Offshore wind power generation will become a very promising industry in my country. [0003] The main function of the internal power collection system of the offshore wind farm is to collect electric energy, which is an important part of the offshore wind farm. With the increase of offshore wind farms, the topology of the power collection system will become more and more complex and important. The co...

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Problems solved by technology

Economic comparison and analysis of switch configuration schemes for offshore wind farm electrical systems when cable faults are considered (Wang Jiandong, Li Guojie. Economic comparison and analysis of switch configuration schemes for offshore wind farm electrical systems when cable faults are considered[J]. Power Grid Technology, 2010, 34(2):125-128) analyzed the economic performance of several collector system topologies, but did not consider the influence of the cost of the electrical performance index

Economic comparison of electrical system layout of offshore wind farms ([11] Wang Jiandong, Li Guojie. Economic comparison of internal electrical system layout of offshore wind farms [J]. Automation of Electric Power Systems, 2009,33(11):99-103.) For five types The total cost of different offshore wind farm collection system topologies was evaluated, and the sensitivity analysis was performed on several important parameters affecting the cost, but the author did not take into account the different power transmission capabilities of offshore wind farms caused by different topologies. output power loss

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