CN113513454A - Double-fed wind generating set tower barrel structure safety dynamic monitoring method - Google Patents
Double-fed wind generating set tower barrel structure safety dynamic monitoring method Download PDFInfo
- Publication number
- CN113513454A CN113513454A CN202110950728.0A CN202110950728A CN113513454A CN 113513454 A CN113513454 A CN 113513454A CN 202110950728 A CN202110950728 A CN 202110950728A CN 113513454 A CN113513454 A CN 113513454A
- Authority
- CN
- China
- Prior art keywords
- tower
- double
- generating set
- fed wind
- safety
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000012544 monitoring process Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000001514 detection method Methods 0.000 claims abstract description 11
- 238000012545 processing Methods 0.000 claims abstract description 4
- 238000010586 diagram Methods 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 abstract description 5
- 239000010959 steel Substances 0.000 abstract description 5
- 238000003466 welding Methods 0.000 abstract description 4
- 238000005336 cracking Methods 0.000 abstract description 3
- 238000009825 accumulation Methods 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000013507 mapping Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010835 comparative analysis Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D17/00—Monitoring or testing of wind motors, e.g. diagnostics
Abstract
The invention discloses a method for dynamically monitoring the safety of a tower barrel structure of a doubly-fed wind generating set, which is implemented according to the following steps: step 1: a double-shaft dynamic tilt angle sensor is installed on the double-fed wind generating set; step 2: acquiring data of at least four double-shaft dynamic tilt sensors meeting set conditions based on historical data of wind directions of the unit, and recording and storing the acquired data; and step 3: and calculating the maximum inscribed circle of the inner area of the discretized contour through data processing, determining the maximum inscribed circle as the maximum operation safety circle of the double-fed wind generating set, and monitoring and alarming the tower drum structure in real time. Compared with the existing vibration detection, the method has more detection on mechanical operation parts such as a generator, a gear box and the like, can realize real-time and rapid detection on different types of problems such as insufficient steel strength of the tower, uneven settlement of the foundation, insufficient torque value of the tower, cracking of welding seams of the tower and the like, and has certain practical significance.
Description
Technical Field
The invention belongs to the technical field of double-fed wind generating set tower barrels, and particularly relates to a double-fed wind generating set tower barrel structure safety dynamic monitoring method.
Background
The tower barrel of the double-fed wind generating set is a bearing part of the whole set, and plays a supporting role on one hand; on the other hand, the vibration energy of each component during the operation of the unit is absorbed. Meanwhile, during the grid-connected operation of the unit, the combined load of the thrust of wind to three blades and various moments of wind to the engine room is borne, so that the unit can tilt within a normal and safe amplitude value and frequency value range and can also generate irregular deformation formed by combining a plurality of sections; however, when the external environment, materials, foundation and the like change, amplitude values and frequency values which are not in normal ranges can occur, and even a certain angle of inclination occurs on a multi-section surface. Therefore, how to dynamically detect and evaluate the foundation settlement of the wind generating set and the safety of the tower drum structure through the tower drum deformation data acquired from time to time is important, so that problems can be found early, and safety incidents can be prevented.
At present, the early warning value about the tower structure safety is usually calculated by an empirical slope value suggested in a specification standard. Because the early warning device is an empirical value, accurate early warning can not be generally realized when different types of tower drums are matched with different unit manufacturers, the installation slope of the tower drums is uncertain, whether the flange bolt connection of the tower drums is loosened, whether the tower drum structure is damaged or not and the like are detected; therefore, in summary, the dynamic detection of foundation settlement and tower structure of the current wind turbine generator system needs to be further improved.
Disclosure of Invention
The invention aims to provide a method for dynamically monitoring the safety of a tower drum structure of a doubly-fed wind generating set, which solves the problem that the dynamic detection and evaluation of foundation settlement and the tower drum structure of the existing wind generating set are to be further improved.
The technical scheme adopted by the invention is that,
a double-fed wind generating set tower barrel structure safety dynamic monitoring method is implemented according to the following steps:
step 1: respectively installing a double-shaft dynamic tilt angle sensor at the center positions of at least three tower cylinder planes and a tower foundation base of a tower cylinder of the doubly-fed wind generating set;
step 2: acquiring data of at least three double-axis dynamic tilt sensors with wind speed less than cut-out wind speed during full rated power of a tower cylinder plane and a tower foundation base based on historical data of wind directions of a unit, and recording and storing the acquired data;
and step 3: the method comprises the steps of extracting and discretizing stored data, then carrying out region pixelization in the profile on the discretized data, calculating the maximum inscribed circle of the inner region of the discretized profile through data processing, determining the maximum inscribed circle as the maximum operation safety circle of the double-fed wind generating set, and carrying out real-time monitoring and alarming on a tower structure.
The present invention is also characterized in that,
in the step 1, the number of the double-shaft dynamic tilt angle sensors of the double-fed wind generating set tower cylinder is four. In the step 2: the historical data of the wind direction of the unit is specifically as follows: historical data of the unit wind direction rose diagram and the wind frequency diagram.
In step 3, the real-time monitoring of the tower drum structure specifically comprises: based on the maximum operation safety circle, comparing the dynamic inclination value acquired by the double-shaft dynamic inclination angle sensor of each tower plane of the operation unit with the respective maximum operation safety circle, and when the dynamic value is not in the maximum operation safety circle, sending a buzzing alarm by the detection system.
In step 3, the maximum inscribed circle is determined to be updated by taking the month as a periodic unit.
The invention has the beneficial effects that: the invention discloses a method for dynamically monitoring the safety of a tower drum structure of a doubly-fed wind generating set, which can be used for rapidly detecting different types of problems such as insufficient steel strength of a tower drum, uneven settlement of a foundation, insufficient torque value of the tower drum, cracking of welding seams of the tower drum and the like in real time.
Drawings
FIG. 1 is a schematic flow chart of a method for dynamically monitoring the safety of a tower structure of a doubly-fed wind turbine generator system according to the invention;
FIG. 2 is a data processing flow chart of a double-fed wind generating set tower structure safety dynamic monitoring method of the invention;
FIG. 3 is a schematic fitting diagram of an initial maximum stiffness circle of one tower section in the method for dynamically monitoring the safety of the tower structure of the doubly-fed wind turbine generator system.
Detailed Description
The method for dynamically monitoring the safety of the tower structure of the doubly-fed wind turbine generator system according to the present invention is further described in detail with reference to the accompanying drawings and the detailed description.
The invention is applied to the tower barrel of the double-fed wind generating set;
1) as shown in fig. 1 and 2, after the tower of the wind turbine generator is installed, a high-precision double-shaft dynamic tilt angle sensor is installed on a concrete foundation of a tower foundation and four planes respectively, the double-shaft dynamic tilt angle sensor can measure angle changes relative to two shafts, accurately measure the dynamic tilt angle and the roll angle of a carrier, and transmit collected data through optical fibers;
2) as shown in fig. 3, after the tower footing foundation and the installation and debugging of the dual-axis dynamic tilt angle sensors of 4 platforms are completed, the historical data of the wind direction rose diagram and the wind frequency diagram of the unit are combined, the tilt angle data of at least three primary and secondary wind direction sensors, of which the wind speed is less than the cut-out wind speed, on each platform surface of the unit during the full rated power generation period are collected and recorded and stored in the server. Extracting stored data, mapping the stored discretization (mapping limited individuals in an infinite space into a limited space to improve the space-time efficiency of the algorithm), then performing region pixelation in the discretization data, calculating the maximum inscribed circle of the discretization outline inner region through a bisection method, determining the maximum inscribed circle as a reference maximum operation safety circle of the doubly-fed wind generating set, and sequentially and respectively setting the circle center and the radius of the original maximum operation safety circle from the tower foundation to each platform plane as O0And R0、O1And R1、O2And R2、O3And R3、O4And R4；
3) After the maximum operation safety circle of each plane is determined, comparing the dynamic inclination value acquired by the double-shaft dynamic inclination angle sensor of each plane of the operation unit with the respective maximum operation safety circle area, and when the dynamic value is not in the maximum operation safety circle, sending a buzzing alarm by the detection system;
4) the monitoring system takes a natural month as a period, and carries out regional pixelization in the outline on the tower barrel inclination data discrete value acquired by the double-shaft dynamic inclination angle sensor of each plane of the doubly-fed wind turbine generator in the period, specifically comprising the following steps: calculating the inner region of the discretized contour by dichotomyThe circle center and the radius of the maximum operation safety circle from the tower base to each platform plane are respectively O in sequence0And R0、O1And R1、O2And R2、O3And R3、O4And R4；
Sequentially arranging the center and the radius O of the original maximum operation safety circle0And R0、O1And R1、O2And R2、O3And R3、O4And R4The center of a circle and the radius O of the maximum operation safety circle0And R0、O1And R1、O2And R2、O3And R3、O4And R4And (3) comparative analysis:
4.1) center O of maximum operation safety circle when in operation0、O1、O2、O3、O4The center O of the original maximum operation safety circle0、O1、O2、O3、O4Not covered, it can be preliminarily determined that one of the following conditions exists:
a. the tower barrel between each plane is deformed, and the center O of the maximum operation safety circle runs0、O1、O2、O3、O4The center O of the original maximum operation safety circle0、O1、O2、O3、O4The absolute value of the vector difference indicates the deformation degree of the tower;
b. uneven settlement occurs on a bearing platform or a pile foundation of the double-fed wind turbine generator;
4.2) radius R of maximum operational safety circle when operating0、R1、R2、R3、R4Radius R of original maximum operation safety circle0、R1、R3、R4Not covered, it can be preliminarily determined that one of the following conditions exists:
a. the tower barrel between each plane is deformed, and the center O of the maximum operation safety circle runs0、O1、O2、O3、O4And the originalCenter O of maximum operation safety circle0、O1、O2、O3、O4The absolute value of the vector difference indicates the deformation degree of the tower; generally, the tower footing is loose and not firm or the operation safety of tower steel is weakened;
4.3) when the accumulation area of the maximum operation safety circle and the accumulation surface of the original maximum operation safety circle are accumulated in a plurality of discrete data points and are not covered, the problems that the moment value of a tower cylinder flange is unqualified or a tower cylinder steel welding seam has cracks in the direction of the excessive accumulation area can be judged.
The invention discloses a method for dynamically monitoring the safety of a tower drum structure of a double-fed wind generating set, which solves the problems that the foundation settlement of the wind generating set and the dynamic detection and evaluation of the tower drum structure are to be further improved at present. Compared with the existing vibration detection, the method has the advantages that the detection on mechanical running parts such as a generator and a gear box is more, and the improvement on different types of problems such as insufficient steel strength of a tower cylinder, uneven settlement of a foundation, insufficient torque value of the tower cylinder, cracking of welding seams of the tower cylinder and the like can be realized in real time and rapidly.
Claims (5)
1. A double-fed wind generating set tower barrel structure safety dynamic monitoring method is characterized by comprising the following steps:
step 1: respectively installing a double-shaft dynamic tilt angle sensor on at least three tower cylinder planes of a tower cylinder of the doubly-fed wind generating set and the center position of a tower foundation base;
step 2: acquiring data of at least four double-axis dynamic tilt sensors with wind speed less than cut-out wind speed during full rated power of a tower cylinder plane and a tower foundation base based on historical data of wind directions of a unit, and recording and storing the acquired data;
and step 3: the method comprises the steps of extracting and discretizing stored data, then carrying out region pixelization in the profile on the discretized data, calculating the maximum inscribed circle of the inner region of the discretized profile through data processing, determining the maximum inscribed circle as the maximum operation safety circle of the double-fed wind generating set, and carrying out real-time monitoring and alarming on a tower structure.
2. The method for dynamically monitoring the safety of the tower structure of the doubly-fed wind generating set according to claim 1, wherein in the step 1, the number of the double-axis dynamic tilt sensors of the tower of the doubly-fed wind generating set is four.
3. The method for dynamically monitoring the safety of the tower structure of the doubly-fed wind turbine generator system according to claim 1, wherein in the step 2: the historical data of the wind direction of the unit is specifically as follows: historical data of the unit wind direction rose diagram and the wind frequency diagram.
4. The method for dynamically monitoring the safety of the tower drum structure of the doubly-fed wind turbine generator system according to claim 1, wherein in the step 3, the real-time monitoring of the tower drum structure specifically comprises: based on the maximum operation safety circle, comparing the dynamic inclination value acquired by the double-shaft dynamic inclination angle sensor of each tower plane of the operation unit with the respective maximum operation safety circle, and when the dynamic value is not in the maximum operation safety circle, sending a buzzing alarm by the detection system.
5. The method for dynamically monitoring the safety of the tower structure of the doubly-fed wind turbine generator system as claimed in claim 1, wherein in the step 3, the maximum inscribed circle is determined to be updated in a unit of a period of a month.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110950728.0A CN113513454A (en) | 2021-08-18 | 2021-08-18 | Double-fed wind generating set tower barrel structure safety dynamic monitoring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110950728.0A CN113513454A (en) | 2021-08-18 | 2021-08-18 | Double-fed wind generating set tower barrel structure safety dynamic monitoring method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113513454A true CN113513454A (en) | 2021-10-19 |
Family
ID=78069058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110950728.0A Pending CN113513454A (en) | 2021-08-18 | 2021-08-18 | Double-fed wind generating set tower barrel structure safety dynamic monitoring method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113513454A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024066101A1 (en) * | 2022-09-27 | 2024-04-04 | 西安热工研究院有限公司 | Wind turbine generator-based tower vibration early warning method and system |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2876300A1 (en) * | 2013-11-25 | 2015-05-27 | General Electric Company | Methods and systems to shut down a wind turbine |
| CN105604806A (en) * | 2015-12-31 | 2016-05-25 | 北京金风科创风电设备有限公司 | Tower state monitoring method and system of wind driven generator |
| CN105626389A (en) * | 2015-12-28 | 2016-06-01 | 北京金风科创风电设备有限公司 | System and method for monitoring tower state of wind generating set |
| CN105971821A (en) * | 2016-05-30 | 2016-09-28 | 广东明阳风电产业集团有限公司 | Wind wheel thrust estimation-based control algorithm for wind power generation unit |
| CN107121122A (en) * | 2017-05-31 | 2017-09-01 | 上海应谱科技有限公司 | A kind of Wind turbines tower dynamic rate justifies analysis method |
| CN107829884A (en) * | 2017-10-25 | 2018-03-23 | 西安锐益达风电技术有限公司 | A kind of wind-driven generator tower health status monitoring method and dedicated test system |
| CN109863299A (en) * | 2016-10-07 | 2019-06-07 | 西门子歌美飒可再生能源公司 | Determining wind turbine tower tilt angle |
| US20190218738A1 (en) * | 2017-12-22 | 2019-07-18 | Ship And Ocean Industries R&D Center | Offshore wind turbine support structure monitoring system and operating method thereof |
| CN209637939U (en) * | 2018-12-29 | 2019-11-15 | 内蒙古电力集团综合能源有限责任公司 | Composite type solar wind-energy generating equipment |
| CN213397415U (en) * | 2020-11-24 | 2021-06-08 | 华能定边新能源发电有限公司 | Online temperature testing device based on outdoor fault experiment of unit |
| CN113237461A (en) * | 2021-04-29 | 2021-08-10 | 西安热工研究院有限公司 | On-line monitoring method for perpendicularity of fan tower barrel |
-
2021
- 2021-08-18 CN CN202110950728.0A patent/CN113513454A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2876300A1 (en) * | 2013-11-25 | 2015-05-27 | General Electric Company | Methods and systems to shut down a wind turbine |
| CN105626389A (en) * | 2015-12-28 | 2016-06-01 | 北京金风科创风电设备有限公司 | System and method for monitoring tower state of wind generating set |
| CN105604806A (en) * | 2015-12-31 | 2016-05-25 | 北京金风科创风电设备有限公司 | Tower state monitoring method and system of wind driven generator |
| CN105971821A (en) * | 2016-05-30 | 2016-09-28 | 广东明阳风电产业集团有限公司 | Wind wheel thrust estimation-based control algorithm for wind power generation unit |
| CN109863299A (en) * | 2016-10-07 | 2019-06-07 | 西门子歌美飒可再生能源公司 | Determining wind turbine tower tilt angle |
| CN107121122A (en) * | 2017-05-31 | 2017-09-01 | 上海应谱科技有限公司 | A kind of Wind turbines tower dynamic rate justifies analysis method |
| CN107829884A (en) * | 2017-10-25 | 2018-03-23 | 西安锐益达风电技术有限公司 | A kind of wind-driven generator tower health status monitoring method and dedicated test system |
| US20190218738A1 (en) * | 2017-12-22 | 2019-07-18 | Ship And Ocean Industries R&D Center | Offshore wind turbine support structure monitoring system and operating method thereof |
| CN209637939U (en) * | 2018-12-29 | 2019-11-15 | 内蒙古电力集团综合能源有限责任公司 | Composite type solar wind-energy generating equipment |
| CN213397415U (en) * | 2020-11-24 | 2021-06-08 | 华能定边新能源发电有限公司 | Online temperature testing device based on outdoor fault experiment of unit |
| CN113237461A (en) * | 2021-04-29 | 2021-08-10 | 西安热工研究院有限公司 | On-line monitoring method for perpendicularity of fan tower barrel |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024066101A1 (en) * | 2022-09-27 | 2024-04-04 | 西安热工研究院有限公司 | Wind turbine generator-based tower vibration early warning method and system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Wymore et al. | A survey of health monitoring systems for wind turbines | |
| Benedetti et al. | Structural health monitoring of wind towers: remote damage detection using strain sensors | |
| CN1707262B (en) | Methods and apparatus for rotor blade ice detection | |
| US7322794B2 (en) | Method and apparatus for condition-based monitoring of wind turbine components | |
| Kaewniam et al. | Recent advances in damage detection of wind turbine blades: A state-of-the-art review | |
| US20180291878A1 (en) | Method for Early Error Detection in a Drive System, a System for Early Error Detection, Wind Generator Comprising the System and Use of the System | |
| CN108757343B (en) | Wind generating set and detection method, device and system for operation conditions of wind generating set | |
| EP2589943B1 (en) | Methods and Systems for Detecting Sensor Fault Modes | |
| US11422052B2 (en) | System and method for diagnosing a rotor unbalance of a wind turbine | |
| Rolfes et al. | Sensing solutions for assessing and monitoring wind turbines | |
| CN113237461B (en) | On-line monitoring method for perpendicularity of fan tower barrel | |
| CN113513454A (en) | Double-fed wind generating set tower barrel structure safety dynamic monitoring method | |
| CN110455517A (en) | A kind of tower health monitor method of wind power generating set | |
| Luczak et al. | On the damage detection of a laboratory scale model of a tripod supporting structure by vibration-based methods | |
| CN106644448A (en) | Tower drum bolt fatigue prediction method and prediction system | |
| KR20180028238A (en) | Deformation measuring system of blade | |
| JP2020180563A (en) | Wind power generation system and method for maintaining wind power generation device | |
| CN207598434U (en) | A kind of offshore wind farm set tower drum and the safe on-Line Monitor Device of pile foundation | |
| CN115798163A (en) | High-turbulence mountain wind field generator set tower safety detection method | |
| CN103850274A (en) | Quality detecting method and device for base of wind generating set | |
| CN113007037A (en) | Structure monitoring system and method | |
| CN113125564A (en) | Online detection method for early damage of wind turbine tower | |
| CN212003450U (en) | Wind turbine generator system tower section of thick bamboo state on-line monitoring system | |
| Ochieng | Ground-Based Radar in Structural Design, Optimization, and Health Monitoring of Stationary and Rotating Structures | |
| US11714023B2 (en) | Method of monitoring the structural integrity of the supporting structure of a wind turbine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211019 |