CN103335800A - Vibration fault detection method and device for wind turbine - Google Patents
Vibration fault detection method and device for wind turbine Download PDFInfo
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- CN103335800A CN103335800A CN2013102265322A CN201310226532A CN103335800A CN 103335800 A CN103335800 A CN 103335800A CN 2013102265322 A CN2013102265322 A CN 2013102265322A CN 201310226532 A CN201310226532 A CN 201310226532A CN 103335800 A CN103335800 A CN 103335800A
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Abstract
The invention provides a vibration fault detection method and device for a wind turbine. The mechanical vibration quantities of all components of the wind turbine are converted into corresponding electricity quantity Q through a vibration sensor, and then the electricity quantity Q is subject to electricity conversion and is output as an analog signal after being amplified; the analog signal is converted into a corresponding digital signal and is finally output as the digital signal through a singlechip and an LED nixie tube connected with the singlechip, the specific working state of the wind turbine can be discovered through the displayed data, and when the output voltage value exceeds the upper limit value, alarming is realized to complete vibration detection of the wind turbine; meanwhile, the information of all nodes is transmitted to nodes of a site coordinator in a ZigBee wireless transmission manner and then transmitted to an upper computer through the nodes of the coordinator, and data display and memory are finished. The vibration fault detection method and device can reasonably judge the running states of all components of the wind turbine so as to ensure safe and reliable operation of the wind turbine and reduce faults.
Description
Technical field:
The invention belongs to a kind of detection method of equipment failure, particularly a kind of wind-powered electricity generation unit vibration fault detection method and device.
Background technology:
In China, the area that wind energy is abundant is remote usually, and environment is abominable.The wind-powered electricity generation unit is under these rugged surroundings, use mission life to reduce greatly, main influence factor comprises: factors such as the wind-force of irregular break-in varying load impacts, the extreme temperature difference, long-term work causes in normal course of operation various faults to occur under the alternate load of this complexity.Gearbox fault is the main reason that causes stop time, secondly is control system and electric fault.According to statistics, the wind field gear case spoilage of China is the highest parts of failure rate in the unit up to 40%-50%.
Summary of the invention:
Purpose of the present invention just is to provide a kind of wind-powered electricity generation unit vibration method for diagnosing faults, this method can reasonably be judged the running status of each parts of wind-powered electricity generation unit, thereby guarantee the generation of wind power generating set safety, reliability service, minimizing fault, improve the operational reliability of wind power generating set.
Another object of the present invention provides a kind of wind-powered electricity generation unit vibration trouble-shooter.
As above design, technical scheme of the present invention is: a kind of wind-powered electricity generation unit vibration method for diagnosing faults, it is characterized in that: utilize vibration transducer to change the mechanical vibration amount of each parts of wind-powered electricity generation unit into corresponding quantity of electric charge Q, then charge Q is carried out charge conversion, and it is amplified the back export with simulating signal; This simulating signal is converted into corresponding digital signal, exported with the form of digital signal by the coupled LED charactron of single-chip microcomputer at last, can find the duty that the wind-powered electricity generation unit is concrete by data presented, when output voltage values surpasses higher limit, realize reporting to the police, detect thereby finished the wind-powered electricity generation unit vibration; Simultaneously, by the ZigBee Wireless transmission mode each nodal information is sent to on-site coordination device node, then reaches host computer by coordinator node and finish demonstration and storage to data.
A kind of wind-powered electricity generation unit vibration trouble-shooter is characterized in that: comprise piezoelectric acceleration transducer and measure transmission circuit, hysteresis loop comparator, master control MUC, ZigBee module, latch, electric power management circuit and display; The signal of piezoelectric acceleration transducer and the output of measurement transmission circuit thereof is input to master control MUC by the hysteresis loop comparator circuit, master control MUC is input to display with this signal, and go out by ZigBee module wireless transmission, receive and be sent to host computer by coordinator node; The I/O mouth that the output signal of power management chip is linked into master control MUC by latch is finished the input of signal.
Above-mentioned power management chip is made up of CN3052 lithium cell charging managing chip, lithium battery, CN1185 voltage monitoring chip, CN3052 lithium cell charging managing chip can directly be connected with latch, also can be connected with latch with CN1185 voltage monitoring chip by lithium battery.
Above-mentioned latch adopts 74HC573.
Above-mentioned master control MUC adopts HT66FU50.
Above-mentioned ZigBee module adopts TI-CC2530.
The two-way clock chip DS12C877 that is connected with of above-mentioned master control MUC.
The two-way temperature survey chip DS18B20 that is connected with of above-mentioned master control MUC.
The present invention has following advantage and good effect:
1, the method for applying vibration detection of the present invention is carried out state-detection to each parts of wind-powered electricity generation unit (as gear case), the fault probability that minimizing causes because of gear case, thereby can effectively reduce the failure rate of wind-powered electricity generation unit, therefore play a very important role for the safety in operation that improves the wind-powered electricity generation unit.
2, the present invention is applied to wind-powered electricity generation operating states of the units fields of measurement with the ZigBee technology, has not only realized the on-line monitoring of wind-powered electricity generation operating states of the units, and has removed numerous and diverse and high field wiring and line upkeep work from.
3, the present invention has realized that the terminal node measurement becomes the low power dissipation design of sending with control circuit.
4, the present invention has realized measuring low-power consumption, the low voltage power supply circuit of transmission circuit.
Description of drawings:
Fig. 1 is theory diagram of the present invention;
Fig. 2 is the hardware composition frame chart of pick-up unit.
Embodiment:
As shown in Figure 1, 2: a kind of wind-powered electricity generation unit vibration method for diagnosing faults, utilize vibration transducer to change the mechanical vibration amount of each parts of wind-powered electricity generation unit (blade, gear case etc.) into corresponding quantity of electric charge Q, then charge Q is amplified the back and export with simulating signal; This simulating signal is converted into corresponding digital signal, exported with the form of digital signal by the coupled display of single-chip microcomputer at last, can find the duty that the wind-powered electricity generation unit is concrete by data presented, when output voltage values surpasses higher limit, realize reporting to the police, detect thereby finished the wind-powered electricity generation unit vibration; Simultaneously, by the ZigBee Wireless transmission mode signal of each parts of wind-powered electricity generation unit is sent to on-site coordination device node, then reaches host computer by coordinator node and finish demonstration and storage to data.
As shown in Figure 1, 2: a kind of wind-powered electricity generation unit vibration trouble-shooter, by comprising piezoelectric acceleration transducer and measuring transmission circuit, hysteresis loop comparator, master control MUC, ZigBee module TI-CC2530, latch 74HC573, electric power management circuit, LED light, clock chip DS12C877 and temperature survey chip DS18B20 and form.
Specifying of above each several part is as follows:
1, main control MCU:
The node main control MCU adopts the HT66FU50 single-chip microcomputer.Its A/D, low-power consumption, clock and mode of operation, LVD, input capture, PWM output, function such as UART, built-in EEPROM and the realization that consists of these works for a long time provide good condition.In these works, oscillation source has adopted external 11.0592MHz crystal oscillator.
2, vibration transducer and measurement transmission circuit thereof:
(1) vibration transducer among the present invention has adopted the Measurement Specialties Inc(U.S.) the Minisense100 piezoelectric vibration sensors.This sensor can be converted into the acceleration simulation amount signal of vibration charge signal output, can be used for measuring sustained vibration or impact, has the favorable linearity working range.
(2) measure transmission circuit and adopted the low-power consumption characteristic, have rail-to-rail technology LMC6484 operational amplifier.Under single power supply, work and make and measure output quasi sine signal.Make node can under battery powered condition, finish the task of signal measurement.Gather the vibration signal amplitude by Chip Microcomputer A C.The hysteresis loop comparator of analog signals under the single power supply that LM311 constitutes changes into square wave with the quasi sine signal, sends into the cycle (frequency) of single-chip microcomputer input capture channel measurement signal.
The principle explanation:
● the amplifier single power supply: the power supply mode of amplifier is divided two kinds of dual power supply and single power supplies.For the dual power supply amplifier, its output can change in the no-voltage both sides, but also zero setting of output when differential input voltage is zero.Adopt the amplifier of single power supply, a certain range of output between power supply and ground.
● rail-to-rail: the input current potential of amplifier requires to be higher than a certain numerical value of negative supply usually, and is lower than a certain numerical value of positive supply.Amplifier through particular design can allow to import current potential whole interval variation the from the negative supply to the positive supply, even also is allowed to slightly higher than positive supply or a shade below negative supply.This amplifier is called rail-to-rail (Rail-to-Rail) input operational amplifier.
3, electric power management circuit has partly adopted CN3052 lithium cell charging managing chip, CN5136PFM boost DC-DC chip, the CN1185 voltage monitoring chip of Shanghai such as rhythm electronics corporation.Realized that the lithium electricity fills functions such as Charge Management, battery electric quantity indication and battery charging state indication, inserts the single-chip processor i/o mouth by the 74HC573 chip and finishes the signal input.
4, other: adopted the DS12C877 clock chip to finish equipment time management, DS18B20 among the present invention and be used for temperature survey, also had some LED light all to be connected single-chip microcomputer by I/O with button.
The course of work of this device is:
With piezoelectric acceleration transducer and measure the plurality of positions that transmission circuit is installed in the wind-powered electricity generation unit, because gear case is vibrated one that has the greatest impact relatively, also be that the highest parts take place failure rate.Therefore place one respectively at four faces of gear case, wind wheel main bearing level 2 of outer bearings in 1, generator by the detection in each orientation, are analyzed data, realize the function of vibration detection.
The signal of piezoelectric acceleration transducer and the output of measurement transmission circuit thereof is input to master control MUC by the hysteresis loop comparator circuit, master control MUC is input to display with this signal, and go out by ZigBee module wireless transmission, receive and be sent to host computer by coordinator node; The I/O mouth that the output signal of power management chip is linked into master control MUC by latch is finished the input of signal.Above-mentioned power management chip is made up of CN3052 lithium cell charging managing chip, lithium battery, CN1185 voltage monitoring chip, CN3052 lithium cell charging managing chip can directly be connected with latch, also can be connected with latch with CN1185 voltage monitoring chip by lithium battery.
Claims (8)
1. wind-powered electricity generation unit vibration method for diagnosing faults, it is characterized in that: utilize vibration transducer to change the mechanical vibration amount of each parts of wind-powered electricity generation unit into corresponding quantity of electric charge Q, then charge Q is carried out charge conversion, and it is amplified the back export with simulating signal; This simulating signal is converted into corresponding digital signal, exported with the form of digital signal by the coupled LED charactron of single-chip microcomputer at last, can find the duty that the wind-powered electricity generation unit is concrete by data presented, when output voltage values surpasses higher limit, realize reporting to the police, detect thereby finished the wind-powered electricity generation unit vibration; Simultaneously, by the ZigBee Wireless transmission mode each nodal information is sent to on-site coordination device node, then reaches host computer by coordinator node and finish demonstration and storage to data.
2. a wind-powered electricity generation unit vibration trouble-shooter is characterized in that: comprise piezoelectric acceleration transducer and measure transmission circuit, hysteresis loop comparator, master control MUC, ZigBee module, latch, electric power management circuit and display; The signal of piezoelectric acceleration transducer and the output of measurement transmission circuit thereof is input to master control MUC by the hysteresis loop comparator circuit, master control MUC is input to display with this signal, and go out by ZigBee module wireless transmission, receive and be sent to host computer by coordinator node; The I/O mouth that the output signal of power management chip is linked into master control MUC by latch is finished the input of signal.
3. wind-powered electricity generation unit vibration trouble-shooter according to claim 2, it is characterized in that: above-mentioned power management chip is made up of CN3052 lithium cell charging managing chip, lithium battery, CN1185 voltage monitoring chip, CN3052 lithium cell charging managing chip can directly be connected with latch, also can be connected with latch with CN1185 voltage monitoring chip by lithium battery.
4. wind-powered electricity generation unit vibration trouble-shooter according to claim 2 is characterized in that: above-mentioned latch employing 74HC573.
5. wind-powered electricity generation unit vibration trouble-shooter according to claim 2 is characterized in that: above-mentioned master control MUC employing HT66FU50.
6. wind-powered electricity generation unit vibration trouble-shooter according to claim 2 is characterized in that: above-mentioned ZigBee module employing TI-CC2530.
7. wind-powered electricity generation unit vibration trouble-shooter according to claim 2 is characterized in that: the two-way clock chip DS12C877 that is connected with of above-mentioned master control MUC.
8. wind-powered electricity generation unit vibration trouble-shooter according to claim 2 is characterized in that: the two-way temperature survey chip DS18B20 that is connected with of above-mentioned master control MUC.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104091432A (en) * | 2014-07-10 | 2014-10-08 | 南京工业大学 | Wireless sensor node system based on high-speed gearbox |
| CN105043763A (en) * | 2015-08-28 | 2015-11-11 | 盐城工业职业技术学院 | Wind power generator fault diagnosis system |
| CN106092190A (en) * | 2016-06-02 | 2016-11-09 | 国家电网公司 | Pump-storage generator stable sexual state deterioration method for early warning and system |
| CN109269801A (en) * | 2018-09-27 | 2019-01-25 | 中北大学 | A kind of gearbox fault monitoring device for wind-powered electricity generation |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104091432A (en) * | 2014-07-10 | 2014-10-08 | 南京工业大学 | Wireless sensor node system based on high-speed gearbox |
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| CN106092190A (en) * | 2016-06-02 | 2016-11-09 | 国家电网公司 | Pump-storage generator stable sexual state deterioration method for early warning and system |
| CN106092190B (en) * | 2016-06-02 | 2019-03-29 | 国家电网公司 | Pump-storage generator operation stability state deteriorates method for early warning and system |
| CN109269801A (en) * | 2018-09-27 | 2019-01-25 | 中北大学 | A kind of gearbox fault monitoring device for wind-powered electricity generation |
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Application publication date: 20131002 |