CN103243743A - Quantitative detection method of safe reliability of tower foundation of wind generator - Google Patents
Quantitative detection method of safe reliability of tower foundation of wind generator Download PDFInfo
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- CN103243743A CN103243743A CN2013101888415A CN201310188841A CN103243743A CN 103243743 A CN103243743 A CN 103243743A CN 2013101888415 A CN2013101888415 A CN 2013101888415A CN 201310188841 A CN201310188841 A CN 201310188841A CN 103243743 A CN103243743 A CN 103243743A
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
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Abstract
The invention relates to a quantitative detection method of the safe reliability of a tower foundation of a wind generator. The method comprises the following steps: establishing at least eight measuring points outside the tower building foundation of the wind generator and mounting a vertical low-frequency acceleration sensor and a vertical speed sensor on every measuring point simultaneously; synchronously collecting the vertical vibration acceleration and the vertical vibration speed signals at the measuring points at a preset sampling time interval, and subjecting the obtained vibration acceleration and the obtained vibration speed signals at the identical point to phase calculation to obtain a maximum phase difference value of the vibration acceleration and the vibration speed in the measuring time; and using the maximum phase difference value as a quantized value of the health and safety status of the tower building foundation of the wind generator. According to the quantitative detection method of the safe reliability of the tower foundation of the wind generator, the low-frequency acceleration sensor and the speed sensor are used for monitoring the vibration acceleration and the vibration speed of the tower building foundation of the wind generator in real time, so that the 24-hour quantitative tracking of the health and safety status of the tower building foundation of the wind generator is achieved.
Description
Technical field
The present invention relates to wind generator tower tube building foundation detection method research field, the quantitative detecting method of especially a kind of wind generator tower tube basis security reliability.
Background technology
People's production, life be unable to do without the energy, but fossil energies such as oil, coal are exhausted day by day, and the reserves of earth PetroChina Company Limited. can be exploited 50 years approximately, and coal reserves can be exploited 200 years approximately.Along with the growing interest of the whole world to environmental protection, energy shortage problem, various countries all making great efforts development clean energy resource, green energy resource, utilize natural resource more, promote sustainable development better, reduce noxious gas emission.
To be solar radiation to the earth surface heating inhomogeneous and form for wind energy, is a kind of green energy resource.Wind-powered electricity generation is the abbreviation of wind power generation or wind-power electricity generation, is the regenerative resource of cleaning, does not consume ore resource in the power generation process, not emission greenhouse gas and pollutant.Relative other generation of electricity by new energy projects such as solar electrical energy generation, that wind-powered electricity generation possesses skills is the most ripe, on the largest scaleization development condition, construction period are short, investment flexibly, advantage such as running cost is low.Wind-powered electricity generation in energy conservation, optimize energy resource structure, alleviate the power supply shortage situation, reduce aspects such as atmosphere pollution that using energy source causes and reduction of greenhouse gas discharge and play a significant role.Therefore, wind-power electricity generation by pay attention to day by day, and obtains extensive exploitation and application in worldwide.
Since the nineties in 20th century, be subjected to the influence of the energy and environment, world's wind-powered electricity generation industry fast development.Europe, North America and Asia are three staple markets of world's wind-powered electricity generation industry development, account for world's wind-powered electricity generation installation total capacity more than 90%.
In recent years, China's wind-power electricity generation career development is swift and violent, and newly-increased installation in 2005 to 2010 continuous 4 years realizes being doubled, 2010 the year end total installation of generating capacity reach 4,473 ten thousand kilowatts, surpass the U.S., become world-class wind-powered electricity generation big country.According to national wind-powered electricity generation Center For Information Management 2012 annual wind-powered electricity generation industry Information Statistics, it is 6,266 ten thousand kilowatts to the wind-electricity integration installed capacity of the end of the year 2012 whole nations, increase by 1,482 ten thousand kilowatts than the last year, growth rate 31%, annual wind-powered electricity generation generated energy 1,008 hundred million kilowatt hours, increased by 41% than 2011, the wind-powered electricity generation generated energy accounts for 2.0% of the total electricity volume in the whole nation, and wind-powered electricity generation has surpassed nuclear power becomes the third-largest main force power supply after coal electricity and water power.According to " Chinese feature Denso machine capacity statistics in 2012 " report of Chinese wind energy association issue, by the end of the year 2012,38.96 ten thousand kilowatts of offshore wind farm project total installed capacities have been built up in the whole nation, become except Britain, Denmark offshore wind farm maximum country that installs.According to " wind-powered electricity generation development " 12 " planning " that China put into effect in 2012, the newly-increased wind-powered electricity generation of 2013 yearly plans is installed 1,800 ten thousand kilowatts, and the installation total capacity that was incorporated into the power networks by 2015 reaches 100,000,000 kilowatts, reaches 200,000,000 kilowatts to the year two thousand twenty installed capacity.China all increases thousands of and even up to ten thousand the wind power generating set of construction every year, and wind power tower drum building foundation security reliability is directly connected to people's safety of life and property.Therefore find the potential safety hazard of wind power tower drum building foundation in advance, taking measures to prevent trouble before it happens, it is minimum just loss can be dropped to.
Summary of the invention
In view of this, the quantitative detecting method that the purpose of this invention is to provide a kind of wind generator tower tube basis security reliability.
The present invention adopts following scheme to realize: the quantitative detecting method of a kind of wind generator tower tube basis security reliability, it is characterized in that, and may further comprise the steps:
S01: set up at least 8 survey marks in the wind generator tower tube building foundation outside, and the low-frequency acceleration sensor of vertical direction and the velocity sensor of vertical direction are installed on each survey mark simultaneously;
S02: with a default sampling time interval, gather the vibration acceleration of vertical direction on these survey marks and the vibration velocity signal of vertical direction synchronously, and vibration acceleration and the vibration velocity signal that same survey mark obtains carried out phase calculation, draw vibration acceleration to the maximum phase difference of vibration velocity in Measuring Time;
S03: described maximum phase difference is namely as the quantized value of the healthy and safe situation of wind generator tower tube building foundation.
In an embodiment of the present invention, described at least 8 survey marks evenly, to be symmetrically distributed in wind generator tower tube building foundation center be the same radius of a circle in the center of circle and on same horizontal plane.
In an embodiment of the present invention, the load agent structure of described at least 8 survey marks and wind generator tower tube building foundation is rigidly connected, and is beneficial to transmit fully the vibration that the main body load-carrying construction of wind generator tower tube building foundation produces.
In an embodiment of the present invention, provide a processing unit, a memory cell and a data acquisition and delivery unit, be used for calculating and storing described maximum phase difference.
In an embodiment of the present invention, also provide an alarm unit, when described maximum phase difference changed above a preset value, described alarm unit sent early warning information.
The present invention uses low-frequency acceleration sensor and velocity sensor to monitor vibration acceleration and the vibration velocity of wind power tower drum building foundation in real time, calculate vibration acceleration to the maximum phase difference of vibration velocity in Measuring Time, record and follow the tracks of this maximum phase difference; Can realize online real-time detections in 24 hours to the wind power tower drum building foundation by the method, in time reflect the actual health status of wind power tower drum building foundation.
Description of drawings
Fig. 1 is flow chart of the present invention.
The specific embodiment
For making purpose of the present invention, technical scheme and advantage clearer, below will the present invention be described in further detail by specific embodiment and relevant drawings.
The invention provides the quantitative detecting method of a kind of wind generator tower tube basis security reliability, may further comprise the steps:
S01: set up at least 8 survey marks in the wind generator tower tube building foundation outside, and the low-frequency acceleration sensor of vertical direction and the velocity sensor of vertical direction are installed on each survey mark simultaneously;
S02: with a default sampling time interval, gather the vibration acceleration of vertical direction on these survey marks and the vibration velocity signal of vertical direction synchronously, and vibration acceleration and the vibration velocity signal that same survey mark obtains carried out phase calculation, draw vibration acceleration to the maximum phase difference of vibration velocity in Measuring Time;
S03: described maximum phase difference is namely as the quantized value of the healthy and safe situation of wind generator tower tube building foundation.
Preferably, described at least 8 survey marks evenly, to be symmetrically distributed in wind generator tower tube building foundation center be the same radius of a circle in the center of circle and on same horizontal plane; The load agent structure of described at least 8 survey marks and wind generator tower tube building foundation is rigidly connected, and is beneficial to transmit fully the vibration that the main body load-carrying construction of wind generator tower tube building foundation produces.
In an embodiment of the present invention, provide data acquisition and the delivery unit of a processing unit, a memory cell and a vibration signal, be used for calculating and storing described maximum phase difference; One alarm unit also is provided, and when described maximum phase difference changed above a preset value, described alarm unit sent early warning information.
Specific embodiment:
In the outside of wind generator tower tube building foundation (be the same radius of a circle in the center of circle, same horizontal plane on wind generator tower tube building foundation center), set up survey mark with this circumference eight equal parts and at eight equal parts point place; The load agent structure of those survey marks and wind generator tower tube building foundation is rigidly connected, can transmit the vibration that the main body load-carrying construction of wind generator tower tube building foundation produces fully, the low-frequency acceleration sensor of vertical direction (Z direction) and the velocity sensor of vertical direction (Z direction) are installed on those survey marks simultaneously, those survey marks to wind generator tower tube building foundation carry out the measurement of vibration acceleration and vibration velocity;
With a default sampling time interval (such as 10ms), gather vertical direction (Z direction) vibration acceleration and vertical direction (Z direction) vibration velocity signal that eight survey marks on the wind generator tower tube building foundation produce fully synchronously, and vertical direction (Z direction) wind generator tower tube building foundation vibration acceleration and vertical direction (Z direction) the vibration velocity signal that obtains carried out phase calculation, draw vertical direction (Z direction) vibration acceleration to the maximum phase difference of vertical direction (Z direction) vibration velocity in Measuring Time; The measured maximum phase difference that calculates is namely as the quantized value of the healthy and safe situation of wind generator tower tube building foundation;
Owing to during the healthy and safe situation deterioration of institute's wind generator tower tube building foundation of surveying, measure the maximum phase difference that calculates remarkable increase will take place.By the regular detection to wind generator tower tube building foundation, record is also followed the tracks of this maximum phase difference, when maximum phase difference generation marked change (for example: increase by 9 ° to 12 °), just marked change and early warning have taken place in corresponding the healthy and safe situation of wind generator tower tube building foundation, therefore can realize the quantitatively tracking in 24 hours to the healthy and safe situation of wind generator tower tube building foundation in real-time, online and dynamic mode.
Above-listed preferred embodiment; the purpose, technical solutions and advantages of the present invention are further described; institute is understood that; the above only is preferred embodiment of the present invention; not in order to limit the present invention; within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. the quantitative detecting method of a wind generator tower tube basis security reliability is characterized in that, may further comprise the steps:
S01: set up at least 8 survey marks in the wind generator tower tube building foundation outside, and the low-frequency acceleration sensor of vertical direction and the velocity sensor of vertical direction are installed on each survey mark simultaneously;
S02: with a default sampling time interval, gather the vibration acceleration of vertical direction on these survey marks and the vibration velocity signal of vertical direction synchronously, and vibration acceleration and the vibration velocity signal that same survey mark obtains carried out phase calculation, draw vibration acceleration to the maximum phase difference of vibration velocity in Measuring Time;
S03: described maximum phase difference is namely as the quantized value of the healthy and safe situation of wind generator tower tube building foundation.
2. the quantitative detecting method of wind generator tower tube according to claim 1 basis security reliability is characterized in that: described at least 8 survey marks evenly, to be symmetrically distributed in wind generator tower tube building foundation center be the same radius of a circle in the center of circle and on same horizontal plane.
3. the quantitative detecting method of wind generator tower tube according to claim 1 basis security reliability, it is characterized in that: the load agent structure of described at least 8 survey marks and wind generator tower tube building foundation is rigidly connected, and is beneficial to transmit fully the vibration that the main body load-carrying construction of wind generator tower tube building foundation produces.
4. the quantitative detecting method of the basic security reliability of wind generator tower tube according to claim 1 is characterized in that: a processing unit, a memory cell and a data acquisition and delivery unit are provided, are used for calculating and storing described maximum phase difference.
5. the quantitative detecting method of wind generator tower tube according to claim 1 basis security reliability is characterized in that: an alarm unit also is provided, and when described maximum phase difference changes when surpassing a preset value, described alarm unit sends early warning information.
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| CN103472207A (en) * | 2013-09-30 | 2013-12-25 | 福州大学 | Equivalent looseness measuring method used for mountain landslide early warning |
| CN106225916A (en) * | 2016-07-29 | 2016-12-14 | 福州大学 | Quantitative, the online detection method of fixed offshore platform security reliability |
| CN109868847A (en) * | 2017-12-01 | 2019-06-11 | 大唐国信滨海海上风力发电有限公司 | Corrode online detection instrument in a kind of offshore wind farm single-pile foundation Tidal zone |
| CN113187669A (en) * | 2021-04-20 | 2021-07-30 | 东方电气风电有限公司 | Intelligent inhibition method for tower barrel over-vibration of large wind generating set |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113187669A (en) * | 2021-04-20 | 2021-07-30 | 东方电气风电有限公司 | Intelligent inhibition method for tower barrel over-vibration of large wind generating set |
| CN113187669B (en) * | 2021-04-20 | 2022-04-08 | 东方电气风电股份有限公司 | Intelligent inhibition method for tower barrel over-vibration of large wind generating set |
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