CN103243743B - 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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- CN103243743B CN103243743B CN201310188841.5A CN201310188841A CN103243743B CN 103243743 B CN103243743 B CN 103243743B CN 201310188841 A CN201310188841 A CN 201310188841A CN 103243743 B CN103243743 B CN 103243743B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
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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-driven generator tower building foundation detection method research field, especially a kind of quantitative detecting method of safe reliability of tower foundation of wind generator.
Background technology
Production, the life of people be unable to do without the energy, but the fossil energy such as oil, coal is day by day exhausted, and the reserves of earth PetroChina Company Limited. about can exploit 50 years, and coal reserves about can exploit 200 years.Along with the whole world is to the growing interest of environmental protection, energy shortage problem, various countries all at effort development clean energy resource, green energy resource, utilize natural resource more, promote sustainable development better, reduce noxious gas emission.
Wind energy is that solar radiation is uneven and formed to earth surface heating, is a kind of green energy resource.Wind-powered electricity generation is the abbreviation of wind power generation or wind-power electricity generation, is clean regenerative resource, does not consume ore resource in power generation process, not emission greenhouse gas and pollutant.Other generation of electricity by new energy projects such as relative solar electrical energy generation, wind-powered electricity generation possesses skills the most ripe, on the largest scaleization development condition, the advantage such as the construction period is short, investment flexibility, running cost are low.Wind-powered electricity generation in energy conservation, Optimization of Energy Structure, alleviation power supply shortage situation, reduce in the atmosphere pollution that causes of using energy source and reduction of greenhouse gas discharge etc. 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, by the impact of the energy and environment, world's Wind Power Generation Industry is fast-developing.Europe, North America and Asia are three staple markets of world's Wind Power 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 realization in 2005 to 2010 continuous 4 years is doubled, and at the end of 2010, total installation of generating capacity reaches 4,473 ten thousand kilowatts, exceedes the U.S., becomes world-class wind-powered electricity generation big country.According to the annual Wind Power Generation Industry Information Statistics of national wind power information administrative center 2012, it is 6,266 ten thousand kilowatts to whole nation wind-electricity integration installed capacity in the end of the year 2012,1,482 ten thousand kilowatts are increased than last year, growth rate 31%, annual wind power generation capacity 1,008 hundred million kilowatt hour, increased by 41% than 2011, wind power generation capacity accounts for 2.0% of the total electricity volume in the whole nation, and wind-powered electricity generation has exceeded nuclear power becomes the third-largest main force power supply after coal electricity and water power.According to " Wind Power In China installed capacity in 2012 statistics " report that Wind Energy In China association issues, by the end of the year 2012, the whole nation will build offshore wind farm project total installed capacity 38.96 ten thousand kilowatts, become offshore wind farm except Britain, Denmark and install maximum countries.According to " Wind Power Development " 12 " planning " that China puts into effect for 2012,2013 yearly plans increase wind-powered electricity generation newly and install 1,800 ten thousand kilowatts, and by 2015, grid-connected installation total capacity reached 100,000,000 kilowatts, reached 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 object of this invention is to provide a kind of quantitative detecting method of safe reliability of tower foundation of wind generator.
The present invention adopts following scheme to realize: a kind of quantitative detecting method of safe reliability of tower foundation of wind generator, is characterized in that, comprises the following steps:
S01: set up at least 8 survey marks outside wind-driven generator tower building foundation, and the low-frequency acceleration sensor of vertical direction and the velocity sensor of vertical direction are installed on each survey mark simultaneously;
S02: the sampling time interval preset with, the vibration acceleration of vertical direction and the vibration velocity signal of vertical direction on these survey marks of synchronous acquisition, and the vibration acceleration obtained same survey mark and vibration velocity signal carry out phase calculation, show that vibration acceleration is 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-driven generator tower building foundation.
In an embodiment of the present invention, described at least 8 survey marks evenly, to be symmetrically distributed in the wind-driven generator tower building foundation center same radius of a circle that is the center of circle and in same level.
In an embodiment of the present invention, the load agent structure of described at least 8 survey marks and wind-driven generator tower building foundation is rigidly connected, the vibration that the main body load-carrying construction being beneficial to totally tansitive wind-driven generator tower building foundation produces.
In an embodiment of the present invention, provide a processing unit, a memory cell and a data acquisition and delivery unit, 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 change is more than a preset value, described alarm unit sends early warning information.
The present invention uses low-frequency acceleration sensor and velocity sensor to come vibration acceleration and the vibration velocity of Real-Time Monitoring wind power tower drum building foundation, 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, to 24 hours on-line real-time measuremen of wind power tower drum building foundation, reflecting the actual health status of wind power tower drum building foundation in time by the method.
Accompanying drawing explanation
Fig. 1 is flow chart of the present invention.
Detailed description of the invention
For making object of the present invention, technical scheme and advantage clearly understand, below by specific embodiment and relevant drawings, the present invention will be described in further detail.
The invention provides a kind of quantitative detecting method of safe reliability of tower foundation of wind generator, comprise the following steps:
S01: set up at least 8 survey marks outside wind-driven generator tower building foundation, and the low-frequency acceleration sensor of vertical direction and the velocity sensor of vertical direction are installed on each survey mark simultaneously;
S02: the sampling time interval preset with, the vibration acceleration of vertical direction and the vibration velocity signal of vertical direction on these survey marks of synchronous acquisition, and the vibration acceleration obtained same survey mark and vibration velocity signal carry out phase calculation, show that vibration acceleration is 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-driven generator tower building foundation.
Preferably, described at least 8 survey marks evenly, to be symmetrically distributed in the wind-driven generator tower building foundation center same radius of a circle that is the center of circle and in same level; The load agent structure of described at least 8 survey marks and wind-driven generator tower building foundation is rigidly connected, the vibration that the main body load-carrying construction being beneficial to totally tansitive wind-driven generator tower 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, for calculating and storing described maximum phase difference; Also provide an alarm unit, when described maximum phase difference change is more than a preset value, described alarm unit sends early warning information.
Specific embodiment:
In the outside (in the same radius of a circle being the center of circle with wind-driven generator tower building foundation center, same level) of wind-driven generator tower building foundation, this circumference eight equal parts is set up survey mark at eight equal parts point place; The load agent structure of those survey marks and wind-driven generator tower building foundation is rigidly connected, can the vibration that produces of the main body load-carrying construction of totally tansitive wind-driven generator tower building foundation, those survey marks are installed the low-frequency acceleration sensor of vertical direction (Z-direction) and the velocity sensor of vertical direction (Z-direction) simultaneously, to those survey marks of wind-driven generator tower building foundation, carry out the measurement of vibration acceleration and vibration velocity;
The sampling time interval (such as 10ms) preset with one, vertical direction (Z-direction) vibration acceleration that eight survey marks on Complete Synchronization collection wind-driven generator tower building foundation produce and vertical direction (Z-direction) vibration velocity signal, and phase calculation is carried out to vertical direction (Z-direction) the wind-driven generator tower building foundation vibration acceleration obtained and vertical direction (Z-direction) vibration velocity signal, show that vertical direction (Z-direction) vibration acceleration is to the maximum phase difference of vertical direction (Z-direction) vibration velocity in Measuring Time; Measured by the maximum phase difference that calculates, namely as the quantized value of the healthy and safe situation of wind-driven generator tower building foundation;
During situation deterioration healthy and safe due to surveyed wind-driven generator tower building foundation, the maximum phase difference that survey calculation obtains will occur significantly to increase.By the periodic detection to wind-driven generator tower building foundation, record and follow the tracks of this maximum phase difference, when maximum phase difference generation marked change (such as: increase by 9 ° to 12 °), just correspond to the healthy and safe situation of wind-driven generator tower building foundation and there occurs marked change and early warning, therefore in real-time, online and dynamic mode, quantitatively following the tracks of for 24 hours the healthy and safe situation of wind-driven generator tower building foundation can be realized.
Above-listed preferred embodiment; the object, technical solutions and advantages of the present invention are further described; be understood that; the foregoing is only 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 amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (1)
1. a quantitative detecting method for safe reliability of tower foundation of wind generator, is characterized in that, comprises the following steps:
S01: set up at least 8 survey marks outside wind-driven generator tower building foundation, and the low-frequency acceleration sensor of vertical direction and the velocity sensor of vertical direction are installed on each survey mark simultaneously;
S02: the sampling time interval preset with, the vibration acceleration of vertical direction and the vibration velocity signal of vertical direction on these survey marks of synchronous acquisition, and the vibration acceleration obtained same survey mark and vibration velocity signal carry out phase calculation, show that vibration acceleration is 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-driven generator tower building foundation;
Described at least 8 survey marks evenly, to be symmetrically distributed in the wind-driven generator tower building foundation center same radius of a circle that is the center of circle and in same level;
The load agent structure of described at least 8 survey marks and wind-driven generator tower building foundation is rigidly connected, the vibration that the main body load-carrying construction being beneficial to totally tansitive wind-driven generator tower building foundation produces;
There is provided a processing unit, a memory cell and a data acquisition and delivery unit, for calculating and storing described maximum phase difference;
Also provide an alarm unit, when described maximum phase difference change is more than a preset value, described alarm unit sends early warning information.
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| CN103472207B (en) * | 2013-09-30 | 2015-05-20 | 福州大学 | Equivalent looseness measuring method used for mountain landslide early warning |
| CN106225916B (en) * | 2016-07-29 | 2019-02-22 | 福州大学 | The quantitative of fixed offshore platform security reliability, online detection method |
| CN109868847B (en) * | 2017-12-01 | 2024-01-19 | 大唐国信滨海海上风力发电有限公司 | Corrosion on-line detection equipment for tidal range area of offshore wind power single pile foundation |
| 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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| CN101498688B (en) * | 2009-02-25 | 2012-05-09 | 中国海洋大学 | Ocean platform integral lossless detection method based on structural vibration |
| KR101119743B1 (en) * | 2009-08-31 | 2012-03-23 | 주식회사 효성 | A rotor and wind generator using the rotor and operating method thereof |
| CN102042166B (en) * | 2010-11-25 | 2012-12-26 | 华锐风电科技(集团)股份有限公司 | Vibration detecting device of wind power generating set and method thereof |
| CN202433018U (en) * | 2011-12-31 | 2012-09-12 | 赤峰百润科技有限公司 | Tower drum measuring device of wind generating set and tower drum |
| CN102620807A (en) * | 2012-03-22 | 2012-08-01 | 内蒙古科技大学 | System and method for monitoring state of wind generator |
| CN102980651B (en) * | 2012-11-02 | 2015-05-27 | 华锐风电科技(集团)股份有限公司 | Monitoring method and monitoring device and monitoring system of wind turbine generator condition |
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