CN210977751U - Overspeed module device for improving reliability of variable pitch - Google Patents
Overspeed module device for improving reliability of variable pitch Download PDFInfo
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- CN210977751U CN210977751U CN201921391950.6U CN201921391950U CN210977751U CN 210977751 U CN210977751 U CN 210977751U CN 201921391950 U CN201921391950 U CN 201921391950U CN 210977751 U CN210977751 U CN 210977751U
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- overspeed
- variable pitch
- overspeed module
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The application discloses an overspeed module device for improving the reliability of variable pitch, under the original safety strategy of a wind turbine generator, an EFC signal of a variable pitch system is actively cut off by detecting the rotating speed of an impeller, so that the variable pitch system is safely feathered, and the overspeed module device is installed in a hub of a variable pitch cabinet of the wind turbine generator and comprises an MCU (microprogrammed control unit) controller, an electronic speed measurement chip, a proximity switch and a relay K2; the MCU controller receives signals of the electronic speed measuring chip and the proximity switch and controls the opening and closing of the relay K2 according to the signals of the electronic speed measuring chip and the proximity switch; the relay K2 controls the power supply of EFC 24V. The method has the speed measuring modes of the gyroscope and the proximity sensor, realizes the application of electronic chip speed measurement and mechanical sensor speed measurement, and can realize online programming, rotating speed recording and overspeed alarm; the equipment is small in size, convenient to install, complete in functional components such as collection, measurement, conversion and communication, and the rotating speed alarm value can be set according to the requirements of customers.
Description
Technical Field
The utility model belongs to the technical field of wind generating set becomes oar control system, especially, relate to an improve overspeed module device that becomes oar reliability.
Background
In recent years, wind turbine generator runaway and tower collapse accidents happen occasionally, great economic losses are caused to wind power owners, fan manufacturers and relevant parties, reputation causes adverse effects, and most of the accidents happen because the fans are not feathered when the fans are shut down in feathering mode. Therefore, the safe and reliable feathering shutdown of the fan under the emergency condition is ensured, and the attention of each wind power industry owner is paid more and more.
The existing wind turbine generator shutdown mode mainly comprises the following steps: the three modes of normal shutdown, quick shutdown and emergency shutdown are different in control speed according to different unit design loads. Under the normal shutdown mode and the rapid shutdown mode, the variable pitch system receives a master control instruction of the fan to complete feathering; the emergency shutdown is a triggered safety chain shutdown and is divided into two cases: firstly, a variable pitch system reports a fault and actively breaks a safety chain to execute feathering according to an expected speed; and secondly, safety chains of other systems of the fan are disconnected, so that the variable-pitch safety chain is disconnected to execute feathering.
The variable pitch system is used as an independent subsystem of the wind turbine generator, has compact logic judgment and fault diagnosis functions, and is mainly related to the master control of the fan by communication, power supply and a safety chain loop. The variable pitch system does not have the function of monitoring the rotating speed of the impeller, the conventional method is that an overspeed module device U1 installed in a cabin cabinet detects the rotating speed of the impeller, when the overspeed module device U1 detects overspeed, a main control sends a feathering command to the variable pitch through a slip ring and a main shaft, and the feathering action is carried out after the variable pitch receives the command.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects in the prior art, the overspeed module device for improving the reliability of pitch variation is provided, and through autonomously developing an impeller overspeed module, an EFC signal is triggered to vary the pitch according to the rotating speed of an impeller, so that feathering is realized, and the safe and reliable operation of a fan is ensured.
In order to achieve the above objective, the following technical solutions are adopted in the present application:
an overspeed module device for improving the reliability of variable pitch comprises an MCU (microprogrammed control Unit) controller, an electronic speed measuring chip, a proximity switch and a relay K2;
the MCU controller receives signals of the electronic speed measuring chip and the proximity switch;
the relay K2 controls the power supply of the EFC 24V to be switched on and off.
The utility model discloses further include following preferred scheme:
preferably, the MCU controller reads the data of the electronic speed measuring chip in real time through a high-speed serial bus protocol.
Preferably, the electronic speed measurement chip integrates a 3-axis accelerometer, a 3-axis gyroscope and 3-axis geomagnetism, and outputs quaternion and euler angle data to the MCU controller by using a data fusion technology.
Preferably, the proximity switches are multiple, the sensitive ends of the proximity sensors are installed on the hub support, and the induction impact iron is installed on the cabin platform.
Preferably, the overspeed module arrangement further integrates a 2.4G industrial wireless communication unit.
Preferably, the overspeed module arrangement power supply is derived from a pitch battery/capacitor backup power supply.
The beneficial effect that this application reached:
1. the method does not relate to the change of an original overspeed protection device and an electric circuit and a software program of a cabin, adds a protection on the basis of the original scheme, and does not influence the operation of the original overspeed protection device of the unit;
2. the installation position of the device is in the hub, the impeller rotating speed detection and the feathering command are issued without passing through a slip ring and hollow shaft transmission line, so that the intermediate link of pitch variation issued by the feathering command can be reduced, and the situation that the feathering command cannot be executed due to the signal transmission problem is avoided;
3. the method has two speed measuring modes of the electronic chip and the proximity sensor, and realizes the application of gyroscope chip speed measurement and mechanical sensor speed measurement;
4. this application has increased one set of protection device on the basis of former system, has also increased the fault point when improving system security, has carried out the redundancy design for this reason, uses 3 proximity switch to detect the rotational speed, just can report the fault and shut down when breaking down when 2 proximity switch simultaneously.
Drawings
FIG. 1 is a front and rear comparison frame of a wind turbine protection system to which the overspeed module apparatus of the present invention is applied;
FIG. 2 is a schematic diagram of the electrical connection of the present invention;
wherein the reference numerals have the meanings: u1: overspeed module (original system), U2: overspeed module (newly added), 101: safety chain, 102: slip ring, 103: hollow shaft, 104: become oar cabinet, 105: a proximity switch.
Detailed Description
The present application is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1, according to the overspeed module device for improving the pitch variation reliability, under the original safety strategy of the wind turbine generator, the safety chain 101EFC signal of the pitch variation system is actively disconnected by detecting the rotating speed of the impeller, so that the pitch variation system is safely feathered, and the safety of the wind turbine generator is improved;
the overspeed module device U2 is installed in a hub of a wind turbine generator pitch cabinet 104 and is independent of an original wind turbine generator protection system;
in an embodiment, the overspeed module device U2 is installed in a pitch main control cabinet, and a sensor wire is led out to a hub through a main control cabinet standby hole.
As shown in fig. 2, the overspeed module apparatus U2 includes an MCU controller, an electronic speed measurement chip (e.g., MPU6050), a proximity switch 105, and a relay K2;
the MCU controller receives signals of the electronic speed measuring chip and the proximity switch 105 and controls the opening and closing of the relay K2 according to the signals of the electronic speed measuring chip and the proximity switch 105;
the relay K2 controls the power supply of the EFC 24V to be switched on and off.
In the embodiment, the MCU controller reads data of the electronic speed measuring chip in real time through a high-speed serial bus protocol, overspeed judgment is carried out according to a rotating speed signal, an overspeed threshold value can be set according to a customer, and when the overspeed threshold value is exceeded, a control signal is output to control the relay K2 to disconnect the power supply of the variable pitch EFC 24V.
The electronic speed measurement chip integrates a 3-axis accelerometer, a 3-axis gyroscope and 3-axis geomagnetism, can accurately measure the rotating speed of the impeller at different installation positions, and outputs quaternion and Euler angle data to the MCU controller by using a data fusion technology. The electronic speed measuring chip filters the output signal of the electronic speed measuring chip through a peripheral hardware circuit and internal software.
The proximity switches 105 are multiple, the sensitive ends of the proximity sensors are installed on a hub support, the induction impact iron is installed on an engine room platform, the induction impact iron rotates along with an impeller, an acquisition unit of the MCU controller captures speed measurement sensor signals after photoelectric isolation, the trigger time and the sequence of pulse signals are recorded, filtering processing is carried out, the sensors are mutually backed up, the fault of any one sensor does not affect the measurement result, the MCU controller carries out overspeed judgment according to the rotating speed pulse signals, the overspeed threshold value can be set according to a customer, and when the speed threshold value is exceeded, a control signal is output to control the relay K2 to disconnect the power supply of the variable pitch EFC 24V.
The proximity switch 105 selected in the embodiment is a product used in large scale in Hua' e Tianren variable pitch, and has high reliability.
The overspeed module device U2 is also integrated with a 2.4G industrial wireless communication unit for realizing remote wireless debugging and data monitoring.
The power supply of the overspeed module device U2 is derived from a pitch battery/capacitor backup power supply, and is independent of other subsystems and related components of the wind turbine generator.
The applicant of the present invention has made detailed description and description of the embodiments of the present invention with reference to the drawings, but those skilled in the art should understand that the above embodiments are only preferred embodiments of the present invention, and the detailed description is only for helping the reader to better understand the spirit of the present invention, and not for limiting the protection scope of the present invention, on the contrary, any improvement or modification made based on the spirit of the present invention should fall within the protection scope of the present invention.
Claims (6)
1. The utility model provides an improve hypervelocity module device of becoming oar reliability which characterized in that:
the overspeed module device is arranged in a hub of a variable pitch cabinet of the wind turbine generator and is independent of an original wind turbine generator protection system;
the overspeed module device comprises an MCU controller, an electronic speed measuring chip, a proximity switch and a relay K2;
the MCU controller receives signals of the electronic speed measuring chip and the proximity switch;
the relay K2 controls the power supply of the EFC 24V to be switched on and off.
2. The overspeed module apparatus for improving pitch reliability of claim 1, wherein:
and the MCU controller reads the data of the electronic speed measuring chip in real time through a high-speed serial bus protocol.
3. The overspeed module apparatus for improving pitch reliability of claim 1, wherein:
the electronic speed measurement chip integrates a 3-axis accelerometer, a 3-axis gyroscope and 3-axis geomagnetism, and outputs quaternion and Euler angle data to the MCU controller by using a data fusion technology.
4. The overspeed module apparatus for improving pitch reliability of claim 1, wherein:
the proximity switches are multiple, the sensitive ends of the proximity sensors are installed on the hub support, and the induction collision iron is installed on the cabin platform.
5. The overspeed module apparatus for improving pitch reliability of claim 1, wherein:
the overspeed module apparatus also integrates a 2.4G industrial wireless communication unit.
6. The overspeed module apparatus for improving pitch reliability of claim 1, wherein:
the power supply of the overspeed module device is derived from a variable pitch battery/capacitor backup power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921391950.6U CN210977751U (en) | 2019-08-26 | 2019-08-26 | Overspeed module device for improving reliability of variable pitch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921391950.6U CN210977751U (en) | 2019-08-26 | 2019-08-26 | Overspeed module device for improving reliability of variable pitch |
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| CN210977751U true CN210977751U (en) | 2020-07-10 |
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| CN201921391950.6U Active CN210977751U (en) | 2019-08-26 | 2019-08-26 | Overspeed module device for improving reliability of variable pitch |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112730876A (en) * | 2020-12-22 | 2021-04-30 | 山东华阳众能动力科技有限公司 | Speed measuring system of rotary mechanical equipment |
| CN113153631A (en) * | 2021-04-09 | 2021-07-23 | 北京国电思达科技有限公司 | Overspeed prevention system and method for impeller of wind turbine generator |
| CN113513448A (en) * | 2021-08-10 | 2021-10-19 | 天津明智润阳技术有限公司 | Variable pitch brake control method for preventing wind generating set from galloping |
-
2019
- 2019-08-26 CN CN201921391950.6U patent/CN210977751U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112730876A (en) * | 2020-12-22 | 2021-04-30 | 山东华阳众能动力科技有限公司 | Speed measuring system of rotary mechanical equipment |
| CN113153631A (en) * | 2021-04-09 | 2021-07-23 | 北京国电思达科技有限公司 | Overspeed prevention system and method for impeller of wind turbine generator |
| CN113513448A (en) * | 2021-08-10 | 2021-10-19 | 天津明智润阳技术有限公司 | Variable pitch brake control method for preventing wind generating set from galloping |
| CN113513448B (en) * | 2021-08-10 | 2024-02-20 | 天津明智润阳技术有限公司 | Variable-pitch brake control method for preventing galloping of wind generating set |
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Address after: 065500 Industrial Park, Gu'an County, Langfang City, Hebei Province Patentee after: Guoneng information technology (Hebei) Co.,Ltd. Patentee after: Guoneng xinkong Internet Technology Co.,Ltd. Address before: 065500 Industrial Park, Gu'an County, Langfang City, Hebei Province (North District) Patentee before: GU'AN HUADIAN TIANREN CONTROL EQUIPMENT Co.,Ltd. Patentee before: BEIJING HUADIAN TIANREN ELECTRIC POWER CONTROL TECHNOLOGY Co.,Ltd. |
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