CN105424259B - The measuring device and method of the braking moment of spindle brake of wind generating set device - Google Patents
The measuring device and method of the braking moment of spindle brake of wind generating set device Download PDFInfo
- Publication number
- CN105424259B CN105424259B CN201511028159.5A CN201511028159A CN105424259B CN 105424259 B CN105424259 B CN 105424259B CN 201511028159 A CN201511028159 A CN 201511028159A CN 105424259 B CN105424259 B CN 105424259B
- Authority
- CN
- China
- Prior art keywords
- wind
- measuring
- brake
- main shaft
- generating set
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 32
- 230000009471 action Effects 0.000 claims description 4
- 230000007246 mechanism Effects 0.000 claims description 4
- 230000005674 electromagnetic induction Effects 0.000 claims description 3
- 238000010248 power generation Methods 0.000 description 11
- 238000001514 detection method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 238000004364 calculation method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/28—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for testing brakes
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Wind Motors (AREA)
Abstract
The present invention provides the measuring devices and method of a kind of braking moment of spindle brake of wind generating set device.The measuring device of the braking moment of the spindle brake of wind generating set device, including intelligent control arithmetic element, on the pulse teeth counting disc of wind power generating set close to switch, for measuring the wind vane of wind direction Yu cabin angle theta, for measuring the airspeedometer of wind speed v, for measuring the voltage sensor of DC bus-bar voltage Udc, for measuring the current sensor and principal shaft braking system of DC load current I, the principal shaft braking system include for detect normal danger and measure braking gap brake in place feedback device and for driving spindle brake execute brake driving device.The present invention has a wide range of application, suitable for all wind power generating sets containing spindle brake.
Description
Technical Field
The invention relates to a device and a method for measuring a main shaft braking torque, and provides a design method for measuring the main shaft braking torque by using the relation between rotational inertia and torque. The device is used for measuring the braking torque of a main shaft brake of the wind generating set, and belongs to the technical field of wind power generation.
Background
In recent years, resource shortage and environmental deterioration have led to a rise in importance of developing and utilizing renewable, pollution-free wind energy resources in countries around the world. Since the 80 s, the main trend in wind energy utilization was wind power generation. With the development of modern technology, wind power generation is rapidly developed, and the proportion of the wind power generation occupying the whole energy utilization is larger and larger. As wind power technology becomes mature, more and more wind power generation related personnel recognize the importance of safe and stable operation of the unit, and a main shaft braking system of the wind power generation unit is a key for influencing the safe and stable operation of the unit. Therefore, it is very important to reasonably and accurately measure the main shaft braking torque.
The current main shaft braking system of small and medium-sized wind generating sets mainly comprises a brake, a friction disc and a driving and electric control system. The brake mainly comprises three types of hydraulic brake, electric brake and pneumatic brake. No matter which type of brake is selected, the brake contains a friction block, and when the friction block is abraded to a certain degree, if the brake is continuously used, the friction disc is damaged, the braking effect is influenced, and the safety of the wind generating set is threatened.
The braking performance of the main shaft brake is one of the main performances of the wind power generation system, and the detection of the braking performance is extremely important for all wind generating sets. The braking performance of the main shaft brake is related to the safety of the wind generating set and people, and the main shaft brake is an important guarantee for the safe and stable operation of the wind generating set. Data show that the proportion of runaway and damage of the wind generating set caused by poor braking to the total number of accidents is large. The wind generating set is a complex system, in the running process of the set, the wind wheel and the main shaft assembly rotate, the set vibrates in different degrees, the running state of each system changes along with the time, the set condition deteriorates continuously, various performances of the wind generating set are reduced, the possibility of faults of the wind generating set is increased gradually, and a great deal of potential safety hazards of the wind generating set are gathered. With the increase of the number of installed wind power generation machines and the gradual maturity of wind power technology, the requirements of wind power generation systems on the braking performance of a main shaft are higher and higher.
Although the thickness of the friction block is the most intuitive and real detection method, the detection method can only detect the brake block and cannot detect other components of the spindle brake system, namely, the detection method is not comprehensive enough and cannot well know the brake performance of the current brake. The manual inspection is limited by the space of an engine room and the severe field environment, has certain flaws, and is also influenced by the working skill and the working attitude of an inspector. Due to these limitations, a new measurement method is needed to detect the performance of the main shaft brake of the wind turbine generator system.
Disclosure of Invention
The invention aims to solve the technical problem of providing a measuring device and a method of a main shaft brake, so as to solve the problem that the brake quantitative analysis is difficult: and calculating the braking torque of the main shaft brake according to the current wind speed, the wind wheel rotating speed, the direct current bus voltage and the load current. The measuring method is simple and quick, does not need to additionally increase the hardware cost of the unit, is used together with the traditional detection method, can more accurately and comprehensively know the state of the main shaft brake of the unit, and improves the safety and the stability of the system.
In order to solve the technical problem, the invention provides a device for measuring the braking torque of a main shaft brake of a wind generating set, which is characterized by comprising an intelligent control operation unit D1, a proximity switch D2 arranged on a pulse number fluted disc of the wind generating set, a wind vane D3 used for measuring an included angle theta between a wind direction and an engine room, an anemometer D4 used for measuring a wind speed v, a voltage sensor D5 used for measuring a direct current bus voltage Udc, a current sensor D6 used for measuring a direct current load current I and a main shaft braking system, wherein the main shaft braking system comprises a braking position feedback device D7 used for detecting a braking position and measuring a braking gap and a driving device D8 used for driving the main shaft brake to execute braking action.
Preferably, the intelligent control arithmetic unit D1 is a programmable controller, an analog input end of the programmable controller is connected with output ends of the wind vane D3, the anemometer D4, the voltage sensor D5 and the current sensor D6, and a digital input end of a tape-height counter of the programmable controller is connected with a proximity switch D2 for measuring the rotating speed of the wind wheel, which is arranged on the pulse number fluted disc; the common digital input end of the programmable controller is connected with a brake in-place feedback device D7 of the main shaft brake system; the digital output end of the programmable controller is connected with a driving device D8 of the spindle braking system.
Preferably, the pulse number fluted disc is a mechanism gear disc.
Preferably, the proximity switch D2 is an electromagnetic induction proximity switch.
Preferably, the wind vane D3 is a wind direction sensor.
Preferably, the anemometer D4 is a wind speed sensor.
Preferably, the voltage sensor D5 is a dc hall voltage sensor.
Preferably, the current sensor D6 is a dc hall current sensor.
The invention also provides a method for measuring the braking torque of the main shaft brake of the wind generating set, which is characterized in that the device for measuring the braking torque of the main shaft brake of the wind generating set comprises the following specific steps:
adopting an anemometer D4 to measure wind speed v and feeding the wind speed v back to an intelligent control operation unit D1, judging by the intelligent control operation unit D1, when the wind speed v meets the requirement that Am/s is less than v and less than Bm/s and the braking torque of a main shaft brake of the wind generating set needs to be measured, measuring an included angle theta between the wind direction and an engine room through a wind vane D3 and feeding the included angle theta back to the intelligent control operation unit D1, judging whether the included angle theta between the wind direction and the engine room is between-5 degrees and 5 degrees by the intelligent control operation unit D1, if the absolute value of the included angle theta between the wind direction and the engine room is more than 5 degrees, controlling the wind generating set to execute yawing by the intelligent control operation unit D1 until the included angle theta between the wind direction and the engine room is between-5 degrees, starting the wind generating set, measuring the rotating speed RPM of a wind wheel through a proximity switch D2 and feeding the intelligent control operation unit D1, controlling a driving device D8 of a main shaft braking system to drive a main shaft brake to execute braking action and detect a braking position through a braking feedback device D7 and a current braking torque, and starting to calculate the current time interval from the current of the main shaft brake D685 and a current direct current load of the main shaft brake, and a direct current bus from the current bus, and a direct current bus, and:
Tbreak＝Jα+Twind-Tload，
wherein,
j is the rotational inertia of the wind generating set; pi is the circumference ratio; r is the radius of the wind wheel; ρ is the air density; cp is the wind energy utilization coefficient.
The method for measuring the braking torque of the main shaft brake of the wind generating set has the following three functions based on the relation between the moment of inertia and the torque: 1. self-checking a main shaft brake in the starting process of the wind generating set; 2. online detection of a main shaft brake in the grid-connected operation process of the wind generating set; 3. and (4) performing data statistics and early warning, and analyzing the service life of the main shaft brake in real time according to the measured historical data of the main shaft brake. The measuring method is characterized in that a main shaft brake is actuated according to the current average wind speed, the current average wind direction, the current wind wheel rotating speed, the current direct current bus voltage and the current load current known by the system original signal input and processing system, the main shaft brake measuring moment is measured according to the inherent function formula, and the state of the main shaft brake is analyzed.
Compared with the prior art, the invention has the beneficial effects that:
1) the application range is wide, and the wind generating set is suitable for all wind generating sets with main shaft brakes;
2) the measuring method is simple, reliable and easy to implement, and is suitable for different running states of the wind generating set: starting process, idling of wind wheel and grid-connected operation;
3) the original components of the wind generating set are utilized in all the measuring processes, additional components are not needed, and hardware cost is not needed to be increased;
4) the functions are complete, and the system has three functions of starting self-checking, online diagnosis and statistical prediction;
5) the method is perfectly compatible with the traditional detection method of the main shaft braking system, and the safety and the stability of the system are greatly improved when the method is used together.
Drawings
FIG. 1 is a schematic structural diagram of a device for measuring braking torque of a wind power generation spindle;
FIG. 2 is a flow chart of a method for measuring the braking torque of the wind power generation spindle.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
Examples
A method for measuring the braking torque of a main shaft brake of a wind generating set adopts a device for measuring the braking torque of the main shaft brake of the wind generating set, and as shown in figure 1, the device for measuring the braking torque of the main shaft of the wind generating set comprises an intelligent control operation unit D1, a proximity switch D2 arranged on a pulse number fluted disc of the wind generating set, a wind vane D3 used for measuring an included angle theta between a wind direction and an engine room, an anemometer D4 used for measuring the current wind speed v, a voltage sensor D5 used for measuring the voltage Udc of a direct current bus, a current sensor D6 used for measuring the current I of a direct current load and a main shaft brake system. The pulse number fluted disc is provided with a proximity switch D2 for measuring the rotating speed RPM of the wind wheel, when the wind wheel rotates, the pulse number fluted disc is driven, and the proximity switch D2 arranged on the pulse number fluted disc can generate pulses. The main shaft braking system comprises a braking position feedback device D7 for detecting a braking position and measuring a braking gap and a driving device D8 for driving the main shaft brake to execute a braking action.
The intelligent control operation unit D1 is a programmable controller, and comprises a CPU module, and an analog quantity acquisition module, a switching value input/output module and a communication module which are connected with the CPU module. The analog quantity input end of the programmable controller is connected with the output ends of a wind vane D3, an anemometer D4, a voltage sensor D5 and a current sensor D6, and the digital quantity input end of a belt high counter of the programmable controller is connected with a proximity switch D2 which is arranged on a pulse number fluted disc and used for measuring the rotating speed of a wind wheel; the common digital input end of the programmable controller is connected with a brake in-place feedback device D7 of the main shaft brake system; the digital output end of the programmable controller is connected with a driving device D8 of the spindle braking system. The pulse number fluted disc be mechanism's toothed disc, proximity switch D2 be electromagnetic induction proximity switch, mechanism's toothed disc provides the induction point for proximity switch D2. The wind vane D3 is a wind direction sensor. The anemometer D4 is a wind speed sensor. The voltage sensor D5 is a direct current Hall voltage sensor. The current sensor D6 is a direct current Hall current sensor. All the components are necessary components of the wind generating set, and no additional increase is needed.
As shown in fig. 2, the method for measuring the braking torque of the main shaft brake of the wind turbine generator system specifically comprises the following steps:
adopting an anemometer D4 to measure wind speed v and feeding the wind speed v back to an intelligent control operation unit D1, judging by the intelligent control operation unit D1, when the wind speed v meets the requirement that Am/s is less than v and less than Bm/s (in the embodiment, A is 2.5, B is 13) and the braking torque of a spindle brake of the wind generating set is required to be measured, measuring an included angle theta between the wind direction and the nacelle by a wind vane D3 and feeding the included angle theta to the intelligent control operation unit D1, judging whether the unit is aligned with the wind or not by the intelligent control operation unit D1, namely judging whether the included angle theta between the wind direction and the nacelle is-5 degrees (namely, approximate 0) or not, if the unit is not aligned with the wind, controlling the operation unit D1 to control the wind generating set to execute yawing to perform wind operation until the included angle theta between the wind direction and the nacelle is-5 degrees (namely, approximate 0), starting the wind generating set, measuring the wind wheel rotating speed RPM by an approach switch D2 and feeding the wind generating set to the intelligent control operation unit D1, when the wind wheel rotating speed is greater than C6340 RPM, measuring the current DC speed, and feeding the current DC braking torque into the spindle brake, and detecting the spindle brake actuating time interval from the spindle brake actuating system, and the spindle brake actuating device, and the spindle brake actuating the spindle brake unit D5392, and the spindle brake actuating the spindle brake:
Tbreak＝Jα+Twind-Tload，
wherein,
wherein J is the rotational inertia of the wind turbine generator system, which is determined by the physical characteristics of the wind turbine generator system, and J is 20000kg.m in this embodiment2α represents the angular acceleration of the wind wheel, the calculation formula is shown as above, Pi represents the circumferential rate, the value of Pi in the embodiment is 3.14, R represents the radius of the wind wheel, represents the characteristic quantity of the wind generating set, the value of R in the embodiment is 10.5m, and rho represents the air density, the embodiment represents the wind generating setRho is 1.29kg/m3(ii) a Cp is a wind energy utilization coefficient and is determined by wing-shaped design characteristics of the wind generating set; twind is the wind wheel torque, and the calculation formula is shown as above; v is the current measured real-time wind speed measured by a wind speed sensor; tload is the current load torque.
When the wind wheel of the unit is in operation, the intelligent control arithmetic unit D1 actively sends a command to the brake system driving device D8 to brake, and when the brake is in place for T (T is 1000ms), the driving device D8 of the main shaft brake system is controlled to drive the main shaft brake to release the brake. In the process of braking and releasing, the unit changes state, the intelligent control operation unit D1 samples the parameters needed by the calculation formula, and the main shaft braking torque Tbreak is calculated.
According to the above, every △ T, the intelligent control arithmetic unit D1 can obtain a group of braking torque values from the beginning of braking to the completion of braking of the main shaft brake, according to the group of braking torque values, the running state of the main shaft brake in the current main shaft braking process can be obtained, and according to the historical data record, the service life of the main shaft brake can be obtained through analysis.
Claims (8)
1. A method for measuring the braking torque of the main shaft brake of a wind generating set adopts a device for measuring the braking torque of the main shaft brake of the wind generating set, the device for measuring the braking torque of the main shaft brake of the wind generating set comprises an intelligent control operation unit (D1), a proximity switch (D2) arranged on a pulse number fluted disc of the wind generating set, a wind vane (D3) used for measuring an included angle theta between a wind direction and an engine room, an anemometer (D4) used for measuring a wind speed v, a voltage sensor (D5) used for measuring a direct-current bus voltage Udc, a current sensor (D6) used for measuring a direct-current load current I and a main shaft braking system, the main shaft braking system comprises a braking position feedback device (D7) for detecting a braking position and measuring a braking gap and a driving device (D8) for driving the main shaft brake to execute a braking action; the method is characterized by comprising the following specific steps:
adopting an anemometer (D4) to measure wind speed v and feeding the wind speed v back to an intelligent control operation unit (D1), judging by the intelligent control operation unit (D1), when the wind speed v meets requirements Am/s < v < Bm/s and the braking torque of a main shaft brake of the wind generating set needs to be measured, measuring an included angle theta between the wind direction and an engine room through a wind vane (D3) and feeding the included angle theta to the intelligent control operation unit (D1), judging whether the included angle theta between the wind direction and the engine room is between-5 degrees and 5 degrees by the intelligent control operation unit (D1), if the absolute value of the included angle theta between the wind direction and the engine room is larger than 5 degrees, controlling the wind generating set to execute yawing operation until the included angle theta between the wind direction and the engine room is between-5 degrees and 5 degrees by the intelligent control operation unit (D1), starting the wind generating set by measuring the rotating speed RPM of a wind wheel through a proximity switch (D2) and feeding the RPM back to the intelligent control operation unit (D1), controlling the operation unit (D1) to control the main shaft brake device (D8) to execute the operation of the main shaft brake system and the operation and the current brake current bus brake operation from the current time interval of a direct current brake (Ubrv) and the current brake unit (Ubrdc) and recording the current time interval from the current brake unit (Uk) and the current brake unit (D63k) and the current brake operation time interval of the current brake unit:
Tbreak＝Jα+Twind-Tload，
wherein,
j is the rotational inertia of the wind generating set; pi is the circumference ratio; r is the radius of the wind wheel; ρ is the air density; cp is the wind energy utilization coefficient.
2. The method for measuring the braking torque of the main shaft brake of the wind generating set according to claim 1, wherein the intelligent control arithmetic unit (D1) is a programmable controller, the analog input end of the programmable controller is connected with the output ends of a wind vane (D3), an anemometer (D4), a voltage sensor (D5) and a current sensor (D6), and the digital input end of a high counter of the programmable controller is connected with a proximity switch (D2) which is arranged on the fluted disc pulse number and is used for measuring the rotating speed of a wind wheel; the common digital input end of the programmable controller is connected with a brake in-place feedback device (D7) of the main shaft brake system; the digital output end of the programmable controller is connected with a driving device (D8) of the spindle braking system.
3. The method for measuring the braking torque of the main shaft brake of the wind generating set according to claim 1, wherein the pulse number toothed disc is a mechanism gear disc.
4. The method for measuring the braking torque of a wind turbine generator system spindle brake as claimed in claim 1, characterized in that the proximity switch (D2) is an electromagnetic induction proximity switch.
5. The method for measuring the braking torque of the main shaft brake of the wind generating set according to claim 1, characterized in that the wind vane (D3) is a wind direction sensor.
6. Method for measuring the braking torque of a wind turbine generator system spindle brake according to claim 1, characterised in that the anemometer (D4) is a wind velocity sensor.
7. Method for measuring the braking torque of a wind turbine generator system spindle brake according to claim 1, characterised in that the voltage sensor (D5) is a dc hall voltage sensor.
8. Method for measuring the braking torque of a wind turbine generator system spindle brake according to claim 1, characterised in that the current sensor (D6) is a dc hall current sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511028159.5A CN105424259B (en) | 2015-12-31 | 2015-12-31 | The measuring device and method of the braking moment of spindle brake of wind generating set device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511028159.5A CN105424259B (en) | 2015-12-31 | 2015-12-31 | The measuring device and method of the braking moment of spindle brake of wind generating set device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105424259A CN105424259A (en) | 2016-03-23 |
| CN105424259B true CN105424259B (en) | 2019-03-19 |
Family
ID=55502617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511028159.5A Active CN105424259B (en) | 2015-12-31 | 2015-12-31 | The measuring device and method of the braking moment of spindle brake of wind generating set device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105424259B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109855785A (en) * | 2019-02-12 | 2019-06-07 | 明阳智慧能源集团股份公司 | Method for detecting braking torque of variable-pitch motor of wind generating set |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101566137A (en) * | 2008-04-21 | 2009-10-28 | 上海驰风机电科技有限公司 | Main shaft system brake device and safety protective method of wind motor during outage |
| CN103953503A (en) * | 2014-04-18 | 2014-07-30 | 南车株洲电力机车研究所有限公司 | Yaw braking torque control device of wind generating set and method thereof |
| CN105201740A (en) * | 2015-10-26 | 2015-12-30 | 北京能高自动化技术股份有限公司 | Automatic control system and method for yaw braking torque of wind generating set |
| CN205388523U (en) * | 2015-12-31 | 2016-07-20 | 上海致远绿色能源股份有限公司 | Measurement device for braking moment of wind generating set basic shaft system hydraulic buffer stop |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8353203B2 (en) * | 2008-10-17 | 2013-01-15 | Hamilton Sundstrand Corporation | Brake position sensor unit |
-
2015
- 2015-12-31 CN CN201511028159.5A patent/CN105424259B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101566137A (en) * | 2008-04-21 | 2009-10-28 | 上海驰风机电科技有限公司 | Main shaft system brake device and safety protective method of wind motor during outage |
| CN103953503A (en) * | 2014-04-18 | 2014-07-30 | 南车株洲电力机车研究所有限公司 | Yaw braking torque control device of wind generating set and method thereof |
| CN105201740A (en) * | 2015-10-26 | 2015-12-30 | 北京能高自动化技术股份有限公司 | Automatic control system and method for yaw braking torque of wind generating set |
| CN205388523U (en) * | 2015-12-31 | 2016-07-20 | 上海致远绿色能源股份有限公司 | Measurement device for braking moment of wind generating set basic shaft system hydraulic buffer stop |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105424259A (en) | 2016-03-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102507205B (en) | Method for checking vibration fault of fan blade of aerial engine | |
| CN102052243B (en) | Systems and methods for testing a wind turbine pitch control system | |
| CN103674234B (en) | State early warning method and system for abnormal vibration of wind generating set | |
| CN105756864B (en) | Blade imbalance fault diagnostic method based on double-fed wind power generator group stator current | |
| CN112065659B (en) | Independent variable pitch control method and variable pitch comprehensive monitoring method and system for wind turbine generator | |
| WO2016091201A1 (en) | Parameter measurement, control, operation, and load monitoring method and system for crane | |
| CN102759449A (en) | Fault diagnosis device for transmission system of wind turbine generator and simulation method | |
| CN105134488B (en) | A kind of startup method of Wind turbines | |
| CN108799014A (en) | The detecting system of data sampling sensor and pitch-controlled system, method and apparatus | |
| CN106494960A (en) | A kind of lift running safety monitoring and initial failure early warning system and method | |
| CN108590984A (en) | A kind of wind generator set blade Payload Monitoring And Control method and device | |
| CN109281805B (en) | A multi-parameter measurement intelligent inspection system | |
| CN104093976B (en) | For determining the method and computing unit of total extent of damage of at least one rotary part of drive chain | |
| CN105424259B (en) | The measuring device and method of the braking moment of spindle brake of wind generating set device | |
| CN112287621A (en) | Wind turbine generator operating state threshold curve determining method, evaluation method and system | |
| CN106225983A (en) | The online test method of brake moment and device | |
| CN202453182U (en) | Fault diagnosis device of gearbox of wind generation set | |
| CN205388523U (en) | Measurement device for braking moment of wind generating set basic shaft system hydraulic buffer stop | |
| CN201963480U (en) | Status detection system for wind turbine generator system | |
| CN102829905B (en) | Friction torque measuring method for service life evaluation of ball bearing for motor | |
| CN106872166A (en) | A kind of wind-driven generator main drive chain shafting torsional oscillation fault detection system | |
| CN109209781A (en) | The Fault Locating Method and device of wind power generating set | |
| CN203287193U (en) | Simulation device used for fault diagnosis for main transmission system of wind generating set | |
| CN110285678A (en) | The method for monitoring sintering circular-cooler traveling skidding | |
| CN104989602B (en) | A kind of wind-driven generator status remote monitoring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |