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Measurement method of wake loss in offshore wind farm based on scada data of operating wind turbines

A wake loss and measurement method technology, which is applied in the monitoring of wind turbines, wind turbines, engines, etc., can solve the problems of ignoring the cumulative effect and difficult derivation, and achieve the effect of low cost and convenient measurement

Inactive Publication Date: 2019-02-15
峰能斯格尔(北京)可再生能源科技有限公司 +2
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Problems solved by technology

[0008] c. Ignoring the cumulative effect caused by the interaction of the entire array under atmospheric conditions
[0009] d. The derivation of free flow wind speed in operational data is very difficult, and how to achieve this calculation has not been unanimously recognized by the industry

Method used

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  • Measurement method of wake loss in offshore wind farm based on scada data of operating wind turbines
  • Measurement method of wake loss in offshore wind farm based on scada data of operating wind turbines
  • Measurement method of wake loss in offshore wind farm based on scada data of operating wind turbines

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Embodiment Construction

[0044] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0045] (1) Input data requirements

[0046]The information needed to accurately assess wake turbulence measurements in offshore wind farms is divided into two categories, necessary and desired. The necessary information is used to assess wake loss, which cannot be done without the relevant information. Desired information is also important to reduce the level of uncertainty in the calculation of measured wakes. Uncertainty and its causes are discussed further in Section IV.

[0047] It is crucial to consider any factors affecting the production of a wind farm so that further reductions in production can be attributed solely to the effects of wakes. Factors that may affect the power output of a wind farm include:

[0048] ● Wind turbines, suppo...

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Abstract

The invention discloses an offshore wind power plant wake flow loss measuring method based on running draught fan SCADA data. According to the method, the running draught fan SCADA data and field anemometer tower data are mainly utilized, screening treatment is conducted, abnormal recorded values and shutdown time periods are removed, and the actual generating capacity of each section of each draught fan is obtained; and a wind power plant is divided into a plurality of sections, the reference generating capacity of each section is calculated, and accordingly the wake flow loss is calculated. The measuring method has the beneficial effects that measuring is convenient, cost is low, data are easy to obtain, and accuracy is high.

Description

technical field [0001] The invention relates to a method for measuring the wake loss of an offshore wind farm based on the SCADA data of an operating fan, in particular to the application of the SCADA data of an operating fan and the data of an on-site wind measuring tower. Background technique [0002] The wake effect in large-scale wind farms is the biggest loss factor in the calculation of annual energy production (AEP), especially in offshore wind farms, due to the larger wind turbine size and array size of offshore wind farms, as well as less The turbulent flow causes the wake to dissipate more slowly. [0003] Due to the potentially larger array effects and the influence of atmospheric stability, the wake of offshore wind farms will be much larger than that of onshore wind farms. The effects of wake turbulence at sea are also not well understood than on land. Whether it is a large-scale offshore wind farm or an offshore wind farm with adjacent wind farms, it is neces...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D17/00
Inventor 李岩罗辛.费伊白雪
Owner 峰能斯格尔(北京)可再生能源科技有限公司
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