CN-116012192-B - Wind turbine generator system clearance risk assessment method, device, equipment and storage medium

CN116012192BCN 116012192 BCN116012192 BCN 116012192BCN-116012192-B

Abstract

The application relates to the technical field of wind power generation, and particularly discloses a method, a device, equipment and a storage medium for evaluating the clearance risk of a wind turbine, wherein a wind measurement data sample of a target site to be selected of the target wind turbine is obtained, actual wind condition data of the target wind turbine at the target site is extracted from the wind measurement data sample, a wind condition model of the target wind turbine at the target site is established according to the actual wind condition data, and simulation calculation is carried out according to the wind condition model and a complete machine model of the target wind turbine to obtain a clearance evaluation value of the target wind turbine.

Inventors

LIU WEI
ZHANG PEICHENG
WANG RUILIANG
SUN YONG
Mou Zheyue
QIU HUIJIE

Assignees

浙江运达风电股份有限公司

Dates

Publication Date: 20260508
Application Date: 20221228

Claims (8)

1. The method for evaluating the clearance risk of the wind turbine generator is characterized by comprising the following steps of: Obtaining a wind measurement data sample of a target site to be selected of a target wind turbine generator; Extracting actual wind condition data of the target wind turbine generator at the target site based on the wind measurement data sample; Inputting the actual wind condition data into an initial wind condition model of the target wind turbine, and obtaining a wind condition model of the target wind turbine at the target site; Synthesizing the wind condition model and the complete machine model of the target wind turbine generator to perform simulation calculation to obtain a clearance evaluation value of the target wind turbine generator; the actual wind condition data specifically comprises an extreme wind shear value, a maximum wind speed change value, air density at the height of each machine position hub of the target wind turbine generator set and a turbulence intensity effective value at the height of each machine position hub of the target wind turbine generator set; the maximum change value of the wind speed is the maximum value of the maximum difference value of the wind speed in the second metering period; the initial wind condition models include models with extreme wind shear and extreme turbulence, models with extreme wind shear and extreme operation gusts, and models with extreme wind shear and extreme coherence gusts; inputting the actual wind condition data into an initial wind condition model of the target wind turbine to obtain a wind condition model of the target wind turbine at the target site, wherein the wind condition model specifically comprises the following steps: According to the equation Superposing the extreme wind shear values on the basis of a standard extreme turbulence model, a standard extreme operation gust model and a standard extreme coherence gust model respectively Obtaining wind speed model of multiple height positions ; According to the equation Defining the turbulence values of the standard extreme turbulence model and modeling the wind speed Substituting the standard extreme turbulence model to obtain a first wind condition model corresponding to the model accompanied by extreme wind shear and extreme turbulence ; According to the equation Defining the gust amplitude of the standard extreme operation gust model And according to the equation Defining the wind speed of each height of the standard extreme operation gust model to obtain a second wind condition model corresponding to the extreme wind shearing and extreme operation gust model ; According to the equation Defining the wind speed of each height of the standard extremely coherent gust model to obtain a third wind condition model corresponding to the extremely coherent gust model along with extremely wind shearing ; Wherein, the ; As a value of the height of the object, For the wind speed at the hub height of each machine position point of the target wind turbine generator, For the hub height of each machine point of the target wind turbine generator, In order to extrapolate the obtained parameters according to the model of the target wind turbine, As a reference value for the intensity of turbulence, For the average wind speed of the target site, For the turbulence intensity to be effective, For the diameter of the wind wheel of the target wind turbine, For the wind speed metering period of the standard extreme operating gust model, For the maximum variation value of the wind speed, For the second metering period.
2. The evaluation method according to claim 1, wherein the obtaining a anemometry data sample of a target site to be selected for the target wind turbine, specifically, is: And acquiring the anemometry data samples with preset historical time from anemometry towers with different heights of the target site.
3. The evaluation method according to claim 1, wherein the integrating the wind condition model and the complete machine model of the target wind turbine generator set performs simulation calculation to obtain a headroom evaluation value of the target wind turbine generator set, specifically: and respectively combining the multiple wind condition models with the complete machine model to carry out simulation calculation so as to obtain a minimum value in the clearance value as the clearance evaluation value.
4. The evaluation method according to claim 1, characterized by further comprising: And obtaining a clearance risk assessment result according to the clearance assessment value and the working condition safety coefficient specified by the standard.
5. The method of claim 4, wherein the obtaining the headroom risk assessment result according to the headroom assessment value and the working condition safety coefficient specified by the standard specifically comprises: According to the equation Calculating to obtain the minimum allowable clearance value of the target wind turbine generator ; If the headroom evaluation value is greater than the minimum allowable headroom value Determining that the clearance risk assessment result is that no clearance safety risk exists; If the headroom evaluation value is smaller than the minimum allowable headroom value Determining that the clearance risk assessment result is that a clearance safety risk exists; Wherein, the For the headroom value of the target wind turbine when the blades are stationary, For the corresponding working condition safety coefficient of the target wind turbine under the abnormal operation working condition, For the target wind turbine generator set is used for the material coefficient of the blade.
6. An evaluation device for clearance risk of a wind turbine, comprising: An acquisition unit configured to acquire the data of the object, the wind measuring method comprises the steps of obtaining a wind measuring data sample of a target site to be selected of a target wind turbine generator; The extraction unit is used for extracting actual wind condition data of the target wind turbine generator at the target site based on the wind measurement data sample; The modeling unit is used for inputting the actual wind condition data into an initial wind condition model of the target wind turbine generator to obtain a wind condition model of the target wind turbine generator at the target site; the simulation unit is used for integrating the wind condition model and the complete machine model of the target wind turbine generator set to perform simulation calculation to obtain a clearance evaluation value of the target wind turbine generator set; the actual wind condition data specifically comprises an extreme wind shear value, a maximum wind speed change value, air density at the height of each machine position hub of the target wind turbine generator set and a turbulence intensity effective value at the height of each machine position hub of the target wind turbine generator set; the maximum change value of the wind speed is the maximum value of the maximum difference value of the wind speed in the second metering period; the initial wind condition models include models with extreme wind shear and extreme turbulence, models with extreme wind shear and extreme operation gusts, and models with extreme wind shear and extreme coherence gusts; inputting the actual wind condition data into an initial wind condition model of the target wind turbine to obtain a wind condition model of the target wind turbine at the target site, wherein the wind condition model specifically comprises the following steps: According to the equation Superposing the extreme wind shear values on the basis of a standard extreme turbulence model, a standard extreme operation gust model and a standard extreme coherence gust model respectively Obtaining wind speed model of multiple height positions ; According to the equation Defining the turbulence values of the standard extreme turbulence model and modeling the wind speed Substituting the standard extreme turbulence model to obtain a first wind condition model corresponding to the model accompanied by extreme wind shear and extreme turbulence ; According to the equation Defining the gust amplitude of the standard extreme operation gust model And according to the equation Defining the wind speed of each height of the standard extreme operation gust model to obtain a second wind condition model corresponding to the extreme wind shearing and extreme operation gust model ; According to the equation Defining the wind speed of each height of the standard extremely coherent gust model to obtain a third wind condition model corresponding to the extremely coherent gust model along with extremely wind shearing ; Wherein, the ; As a value of the height of the object, For the wind speed at the hub height of each machine position point of the target wind turbine generator, For the hub height of each machine point of the target wind turbine generator, In order to extrapolate the obtained parameters according to the model of the target wind turbine, As a reference value for the intensity of turbulence, For the average wind speed of the target site, For the turbulence intensity to be effective, For the diameter of the wind wheel of the target wind turbine, For the wind speed metering period of the standard extreme operating gust model, For the maximum variation value of the wind speed, For the second metering period.
7. An apparatus for evaluating headroom risk of a wind turbine generator, comprising: A memory for storing a computer program; processor for executing the computer program, which when executed by the processor realizes the steps of the method for assessing the headroom risk of a wind turbine generator according to any of claims 1 to 5.
8. A storage medium having stored thereon a computer program, which when executed by a processor, implements the steps of a method of assessing headroom risk of a wind turbine generator according to any of claims 1 to 5.

Description

Wind turbine generator system clearance risk assessment method, device, equipment and storage medium Technical Field The application relates to the technical field of wind power generation, in particular to a method, a device, equipment and a storage medium for evaluating clearance risk of a wind turbine. Background The clearance value is the distance between the tip of the wind generating set and the tower wall. The distance between the blade tip of the wind generating set and the tower wall is an important condition for judging whether the wind generating set can safely run, and the method has very important significance on how to more accurately evaluate the clearance risk condition of the wind generating set at the beginning of site project construction. Along with the increase of the diameter of the wind wheel, the blades are softer, the deformation of the blades is correspondingly larger, and the tower sweeping condition of the blades is more and more. In order to avoid the occurrence of the blade tower sweeping, the related data obtained through the measurement of the early-stage wind measuring tower is required to be analyzed, so that the wind resource condition of the site can be accurately controlled, and the unit clearance level can be accurately estimated. Working conditions to be considered for headroom risk assessment are provided in IEC61400-1:2019 standard (hereinafter referred to as an "IEC standard comparison table"). In the aspect of the current wind turbine site selection, complicated site projects and topography factors have great influence on site wind conditions, and the wind condition assessment adopting standard regulation has certain limitation, namely the wind condition assessment for plain areas is relatively conservative, and the clearance risk of the wind condition of complex topography cannot be accurately assessed, so that the wind resource cannot be well balanced in fully utilizing and fully assessing the clearance risk. The technical problem to be solved by the person skilled in the art is to provide a scheme for more accurately evaluating the clearance risk of the wind turbine when the wind turbine is designed. Disclosure of Invention The application aims to provide a method, a device, equipment and a storage medium for evaluating the clearance risk of a wind turbine, which are used for accurately evaluating the clearance risk of the wind turbine during the design of the wind turbine so as to achieve the effects of fully utilizing wind resources, fully evaluating the clearance risk and ensuring the safety of wind power generation. In order to solve the technical problems, the application provides a method for evaluating the clearance risk of a wind turbine, which comprises the following steps: Obtaining a wind measurement data sample of a target site to be selected of a target wind turbine generator; Extracting actual wind condition data of the target wind turbine generator at the target site based on the wind measurement data sample; Inputting the actual wind condition data into an initial wind condition model of the target wind turbine, and obtaining a wind condition model of the target wind turbine at the target site; And synthesizing the wind condition model and the complete machine model of the target wind turbine generator to perform simulation calculation to obtain a clearance evaluation value of the target wind turbine generator. Optionally, the actual wind condition data specifically comprises an extreme wind shear value, a maximum wind speed change value, air density at the height of each machine position hub of the target wind turbine generator set and a turbulence intensity effective value at the height of each machine position hub of the target wind turbine generator set; the maximum change value of the wind speed is the maximum value of the maximum difference value of the wind speed in the second metering period. Optionally, the initial wind condition model includes a model with extreme wind shear and extreme turbulence, a model with extreme wind shear and extreme operation gust, and a model with extreme wind shear and extreme coherence gust; inputting the actual wind condition data into an initial wind condition model of the target wind turbine to obtain a wind condition model of the target wind turbine at the target site, wherein the wind condition model specifically comprises the following steps: According to the equation Superposing the extreme wind shearing values alpha 1 on the basis of a standard extreme turbulence model, a standard extreme operation gust model and a standard extreme coherence gust model respectively to obtain a wind speed model V (z) with a plurality of height positions; According to the equation Defining a turbulence value of the standard extreme turbulence model, and substituting the wind speed model V (z) into the standard extreme turbulence model to obtain a first wind condition model V 1 (z, t) corresponding to the model accompan