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Wind turbine farm level loads management control

A technology for wind turbines and wind farms, which is applied in the control of wind turbines, the combination of wind turbines, and the monitoring of wind turbines, and can solve problems such as estimation of undisclosed loads.

Active Publication Date: 2019-08-02
ROMAX TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Neither method discloses an estimate of the load

Method used

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  • Wind turbine farm level loads management control
  • Wind turbine farm level loads management control
  • Wind turbine farm level loads management control

Examples

Experimental program
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Embodiment Construction

[0034] Currently, all modern turbines are equipped with a SCADA system which records and transmits data on basic turbine performance. Data includes power draw, generator current, component temperatures, and wind speed and direction from turbine anemometers. It is the anemometer data from the existing SCADA system that is used in a novel way.

[0035] The inventive concept is explained as follows:

[0036] Using the collated field-level anemometer data as a combined dataset allows determination of the field-level flow structure. From these stream structures it is possible to determine site specific loads.

[0037] The key feature identified from the electric flow field is the persistent flow structure, which usually occurs at the same location in the electric flow field year round. This is a continuous flow structure that affects loading and damage, since fatigue damage needs to occur under long-term experienced loads. There are other, more transient flow structures that ar...

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Abstract

A method for controlling wind turbine farm level loads by control strategy through site-specific topology effects. The method involves the steps of: providing wind velocity data from wind sensors mounted on the wind turbines, the velocity data comprising wind speed and wind direction; providing wind velocity data from one or more reference sensors, the velocity data comprising wind speed and winddirection; binning the wind data according to wind speed and wind direction; identifying wind turbines in which the velocity data deviates from the reference; and calculating modified loads acting onthe wind turbines where the velocity data deviates from the reference; whereby the control strategy and / or maintenance activities are revised. A method for extending (or reducing) life of a wind turbine, altering performance (increased Annual Energy Production, AEP) (operational), or reducing cost through structural material reduction (design) is further disclosed. The approach can be used for scheduling maintenance for wind turbines in a wind farm.

Description

technical field [0001] The invention relates to the operation of wind farms, in particular to the control of wind turbines in the airflow field of the entire wind farm. Background technique [0002] Wind turbine layout is an important topic in wind farm design. The current wind farm design process strives to maximize power capture at a given site and minimize loss of power capture due to turbine wakes affecting other turbines. The effect of topography, atmospheric stability, and the resulting wind quality on turbine loading is an aspect that is not well understood and is not really considered in the design of wind farms. [0003] Turbine loads for the electric field are calculated during the turbine design process based on the site wind rating. However, the wind rating does not capture any site-specific loads that may be caused by terrain. [0004] In real wind farms, site-dependent loads lead to high component failure rates in the turbines in the farm. A better understa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D7/04F03D17/00F03D7/02
CPCF03D7/0224F03D7/048F05B2270/32F05B2270/321F03D17/00Y02E10/728Y02E10/72F03D80/00G05B23/0286F03D80/50F03D9/48F03D1/00F03D7/04F05B2260/80F05B2260/84F05B2270/1095F05B2270/20F05B2270/331F05B2270/808
Inventor S·布朗J·戴A·潘
Owner ROMAX TECH
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