Method for evaluating influence of offshore wind plant on detection efficiency of ground wave beyond-visual-range radar

A technology of ground wave over-the-horizon and over-the-horizon radar, which is applied in the direction of radio wave measurement system, radio wave reflection/reradiation, and measurement devices, which can solve the problem of insufficient technical means and the inability to provide theory for the planning and construction of offshore wind farms and technical support

Pending Publication Date: 2020-10-20
HARBIN INST OF TECH
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Problems solved by technology

However, domestic research on the measurement and measurement of wind farms affecting the electromagnetic environment and radar performance started late, and

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  • Method for evaluating influence of offshore wind plant on detection efficiency of ground wave beyond-visual-range radar
  • Method for evaluating influence of offshore wind plant on detection efficiency of ground wave beyond-visual-range radar
  • Method for evaluating influence of offshore wind plant on detection efficiency of ground wave beyond-visual-range radar

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Embodiment Construction

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0034] Such as figure 1 As shown, for the convenience of explanation, the following scenario is established:

[0035] The wind farm consists of 25 wind turbines forming a square array, the distance between the wind turbines is 500m, and the capacity of each wind turbine is 6MW, and the total installed capacity is 150MW. The parameters of the wind turbines are shown in Table 1:

[0036] Table 1. Fan parameters

[0037]

[0038] The relationship...

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Abstract

The invention discloses a method for evaluating the influence of an offshore wind plant on the detection efficiency of ground wave beyond visual range radar. The method comprises the following steps:according to ground wave over-the-horizon radar parameters and a pre-selected area of a wind power plant, carrying out scene analysis, and screening out objects needing key analysis; establishing a fan electromagnetic model according to the provided parameters of a wind turbine generator, and realizing establishment of a single fan electromagnetic model; according to longitude and latitude coordinates of a fan of a pre-built wind power plant and radar relative position information, building an array in FEKO electromagnetic calculation software, building a scene model, and analyzing shielding influences; calculating RCS changes of a single fan device in different states; analyzing the influence of Doppler frequency; deriving a multipath effect theoretical formula; enabling scene actual measurement to be equivalent to electromagnetic environment noise data, and evaluating the influence range of the wind power plant. By means of electromagnetic simulation calculation, theoretical derivation, actual measurement scene equivalence and the like, a quantitative evaluation result is given.

Description

technical field [0001] The invention belongs to the field of electromagnetic compatibility between wind farms and radar systems, and in particular relates to an evaluation method for the influence of offshore wind farms on the detection efficiency of ground wave over-the-horizon radar. Background technique [0002] In recent years, the number and scale of my country's wind farm construction plans have gradually increased, especially in coastal areas where offshore wind power projects are being vigorously developed. The sea is rich in wind resources and is the preferred location for building wind farms. However, the wind farm covers a large area, the size of the wind turbine is large, and the speed of the wind blade is high, which may change the maritime target environment of the surrounding shore-based radar. For sea detection radar, object occlusion and diffraction caused by wind farms are very unfavorable factors for radar. At present, the United States, the European Uni...

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Application Information

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IPC IPC(8): G01S7/40G01S13/02G06F30/23
CPCG01S7/40G01S13/0218G06F30/23G01S2013/0227Y02B10/30
Inventor 吴小川姚迪董英凝索莹邓维波
Owner HARBIN INST OF TECH
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