CN108120495A - A kind of wind generating set vibration condition monitoring system based on wireless network - Google Patents
A kind of wind generating set vibration condition monitoring system based on wireless network Download PDFInfo
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- CN108120495A CN108120495A CN201711460932.4A CN201711460932A CN108120495A CN 108120495 A CN108120495 A CN 108120495A CN 201711460932 A CN201711460932 A CN 201711460932A CN 108120495 A CN108120495 A CN 108120495A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H1/00—Measuring characteristics of vibrations in solids by using direct conduction to the detector
- G01H1/003—Measuring characteristics of vibrations in solids by using direct conduction to the detector of rotating machines
- G01H1/006—Measuring characteristics of vibrations in solids by using direct conduction to the detector of rotating machines of the rotor of turbo machines
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Abstract
The present invention provides a kind of wind generating set vibration condition monitoring system based on wireless network, is related to wind generating set vibration monitoring technical field.The system includes data acquisition unit, wireless transmission unit, data processing and failure diagnosis unit and remote fault diagnosis unit；The data acquisition unit of each Wind turbines gathers and handles the vibration signal on wind turbine transmission chain, again by between wireless transmission unit and data processing and failure diagnosis unit into row data communication, wireless-transmission network uses the pattern that backbone network is combined with subnet, data processing and failure diagnosis unit carry out comprehensive analysis and diagnosis according to the control strategy of systemic presupposition to the real time data and historical data of each Wind turbines, and remote fault diagnosis unit realizes remote fault diagnosis.The present invention can effectively avoid network congestion, improve Wind turbines status monitoring efficiency, reduce monitoring intensity, accident and damage is avoided to occur for having put into operation but being fitted without the Wind turbines of Vibration Condition Monitoring.
Description
Technical field
The present invention relates to wind generating set vibration monitoring technical field more particularly to a kind of Wind turbines based on wireless network
Vibration Condition Monitoring system.
Background technology
Blade, gear-box and other transmission parts of wind power generating set operate in high temperature, severe cold, salt fog, plateau throughout the year
Etc. under extreme natural environment, and cabin is located at high-altitude, and it is inconvenient to safeguard.If using Wind turbines condition monitoring and fault diagnosis
Technology can not only become disorderly closedown as planned shut-down, and fault spread can be avoided by reducing to shut down, and make repair of the enterprise to equipment
Fault repair is engaged in management, planned maintenance is progressively transitioned into using status monitoring as basic preventative maintenance.Ensure Wind turbines
It safely and reliably runs, improves equipment Management in Enterprise modernization level, and can also find machine in time while fault diagnosis
It is unreasonable on the defects of tool structure design and parts type selecting, provide solid foundation for the optimization design of equipment.
For wind generating set vibration condition monitoring system, the sample frequency of each measuring point requirement is high, and data precision is high, real-time
By force, thus formed data volume it is larger.For the wind power plant of early stage, the link of optical fiber ring network is few, and link throughput is also small, and standby
Communication link is less or even partial branch optical fiber is damaged, without spare fibre.If directly by wind generating set vibration state
Monitoring system is incorporated to optical fiber ring network, and part Large Volume Data easilys lead to link congestion in real-time monitoring process, this will be to wind
The remote monitoring of motor group generates very big harm.If laying optical fiber ring network again, difficulty of construction is big, and the cycle is long, of high cost.
The content of the invention
It is a kind of based on wireless network the technical problem to be solved by the present invention is in view of the above shortcomings of the prior art, provide
Wind generating set vibration condition monitoring system is mainly used for double-fed wind generator unit, for having put into operation but being fitted without vibrational state
The Wind turbines of monitoring, the mode using wireless communication technique networking carry out data transmission, and pass through reasonable arrangement network access number
According to, can effectively avoid network congestion, improve the status monitoring efficiency of Wind turbines, reduce monitoring intensity, so as to avoid accident and
Damage occurs.
In order to solve the above technical problems, the technical solution used in the present invention is：
A kind of wind generating set vibration condition monitoring system based on wireless network, including data acquisition unit, wireless transmission
Unit and data processing and failure diagnosis unit；
The data acquisition unit includes vibrating sensor module, synthetical collection processing module and microcomputer, described
The input terminal of the output terminal connection synthetical collection processing module of vibrating sensor module, the output terminal of synthetical collection processing module connect
Connect the input terminal of microcomputer；
The vibrating sensor module be mounted on wind turbine transmission chain on main shaft, gear-box, multiple positions of generator
It puts, including acceleration transducer, sound transducer, speed probe；Wherein acceleration transducer includes low-frequency acceleration sensor
With intermediate frequency acceleration transducer, low-frequency acceleration sensor is separately mounted to main spindle front bearing horizontal level, mainshaft rear bearing axis
To position, gear-box primary planet pinion horizontal level；Intermediate frequency acceleration transducer is separately mounted to gear-box secondary planet tooth
Take turns upright position, gearbox intermediate shaft axial position, high speed shaft of gearbox output terminal horizontal level, generator drive end horizontal position
It puts, generator anti-drive end horizontal level；Sound transducer is separately mounted to gear-box bottom and cabin；Speed probe is installed
Near the brake disc at generator drive end；
The synthetical collection processing module includes the one or more simultaneous data-acquisitions and photoelectricity that are mounted in cabin
Modular converter, simultaneous data-acquisition are connected by photoelectric conversion module and optical fiber with microcomputer, and synchronous collecting card is used for
Acquisition, processing vibration sensor signal, photoelectric converter are used for fiber-optic signal between simultaneous data-acquisition and microcomputer
Conversion, the common transmitting for completing vibration sensor signal；
The microcomputer is mounted on bottom of towe, is connected between microcomputer and synthetical collection processing module by optical fiber
It connects, monitoring of software program one and database one is stored in the microcomputer, make miniature industry control by performing the program one
The function that machine performs includes, and vibrating sensor module and synthetical collection processing module is controlled to carry out wind generating set vibration state real
When monitoring, to monitoring data carry out in real time analyze and store, meanwhile, pass through peak value, virtual value, kurtosis value, peak factor, pulse
Factor, crest factor, the alarm threshold value of nargin factor these characteristic parameters setting different stage, when certain sensor of acquisition measures
When value is more than setting alarm threshold value, then alarm is sent to data processing and failure diagnosis unit according to the control strategy of systemic presupposition
Partial data before and after information and alarm；
By specific wireless between the data acquisition unit of each Wind turbines and data processing and failure diagnosis unit
Transmission unit is into row data communication；
The data processing and failure diagnosis unit include a set of server arranged on wind farm control center, the set service
Device receives and handles the data that microcomputer returns in each Wind turbines, by DataSocket technologies to each wind turbine
The operating status of group, communications status synchronize monitoring, according to the control strategy of systemic presupposition to the real-time of each Wind turbines
Data and historical data carry out comprehensive analysis and diagnosis；The set server includes application server, backup server, database clothes
Business device, fault diagnosis server and WEB server；Wind generating set vibration status monitoring software program is installed in application server
Two, interaction can be synchronized with the monitoring of software program one in the microcomputer of each Wind turbines, the monitoring of software program
Two are performed, and it is to monitor the operating status of each unit to make the function that system is realized, including running, shutting down, the situation of early warning,
Signal strength, handling capacity, the connection of monitoring wireless network perform the control strategy of whole system, while to each wind-powered electricity generation
The data acquisition unit of unit carries out parameter modification；Backup server is responsible for the redundancy of application server, prevents application server
Failure and influence whole system；Database server is responsible for each Wind turbines that storage is transmitted by wireless-transmission network
Partial data, for the fault diagnosis of system；Fault diagnosis software program one is installed, the failure in fault diagnosis server
Diagnostic software program one is performed the function of realizing fault diagnosis server, according to each wind-powered electricity generation in database server
The partial data of unit carries out detailed atlas analysis to the failure of each Wind turbines；
Data recording function is further included in monitoring of software program two in the server of wind farm control center, works as generation
When network failure causes monitoring system that cannot correctly transmit data, historgraphic data recording is carried out, can find and go through after normal transmission
The Records of the Historian is recorded；
It is whole that the wireless transmission unit includes multiple wireless transmission terminals, multiple wireless relay modules and multiple wireless receivings
End；The microcomputer carries out double-direction radio with wireless transmission terminal by multimode fibre or outdoor shielding netting wire and is connected,
The data input wireless transmission unit of acquisition is wirelessly transferred, each wireless transmission terminal is by wireless-transmission network via nothing
The relay of line trunk module carries out double-direction radio with radio receiving terminal and is connected, and radio receiving terminal is examined with data processing and failure
It is bi-directionally connected between disconnected unit by multimode fibre or outdoor shielding netting wire；
The wireless transmission terminal, mounted on Wind turbines near zone, and attaches gain directional antenna, for sending
The synchrodata of data acquisition unit；The wireless relay module mounted on the central area of multiple Wind turbines, adds omnidirectional
Antenna and double-polarization plate antenna, for multiple Wind turbines signals in receives link, while by wireless signal from one
It delivers in relays after point to next relay point, and forms new wireless coverage area, form multiple wireless relay covering point relays
Pattern；The radio receiving terminal, mounted on wind farm control center near zone, additional cuts palisade parabola antenna is used
In multiple Wind turbines signals are ultimately delivered to data processing and failure diagnosis unit；
The wireless-transmission network uses the pattern that backbone network is combined with subnet, complete with the original optical fiber ring network of wind power plant
Complete independent, wherein backbone network is responsible for data remote, and subnet is responsible for local data's convergence, expands wireless coverage model in a relay fashion
It encloses；
According to different Wind turbines position distribution situations, correspondence takes different wireless network transmissions models, specific to wrap
Include single-hop networks model, the plain structural model of multihop network, the hierarchy structure model of multihop network；For apart from wind power plant control
Wind turbines in 10 kilometers of visual ranges in center processed, using single-hop networks model, specifically using AP (Access Point) and
Client integrated modes, without using wireless relay module in the model；For being evenly distributed and apart from 5 public affairs of wind farm control center
In above Wind turbines or closely Wind turbines of non-visual range, using the plain structural model of multihop network, tool
Body uses Mesh-only patterns；For the Wind turbines apart from 10 kilometers of wind farm control center or more, using multihop network
Hierarchy structure model specifically uses Mesh-AP patterns or wireless bridge pattern；
The method that the wireless network transmissions model is based on sub-clustering, by Wind turbines according to different principle compositions for not
With cluster, and periodically carry out sub-clustering, each cluster sets that there are one cluster head Wind turbines and several cluster member Wind turbines, clusters
In cluster member's Wind turbines be complete information gathering elementary cell, and cluster head Wind turbines be responsible for collect cluster in information, and
Information exchange is carried out with other clusters, a subnet is formed and collects, the hierarchical structure of major network teletransmission；In each cluster and associated cluster
Between, carry out data transmission by the control strategy of systemic presupposition；
The control strategy includes：When Wind turbines normal operation, the Wind turbines in each cluster are controlled with wind power plant
Between the server at center certain real time data is sent according to time difference timing；When some Wind turbines failure early warning
When, then preferentially send the warning datas of the Wind turbines；It is if soft according to monitoring with the early warning simultaneously of multiple Wind turbines in cluster
The preset priority rule of part carries out data transmission and sends control data order respectively；When Wind turbines and wind power plant control
When data transmission enters that data volume is smaller in idle period or communication link between the server at center processed, then before reissuing not
The data of transmission；When the server priority of wind farm control center checks some running of wind generating set situation and real time data,
The then real time data of the prioritised transmission Wind turbines；When associate multiple units in cluster break down simultaneously early warning when, then need
Association cluster is planned according to the unit quantity of failure priority and related link circuits again；
The system further includes remote fault diagnosis unit, in a set of server of the data processing and failure diagnosis unit
WEB server is further included, is responsible for the remote access of system, remote fault diagnosis is carried out convenient for expert；Remote fault diagnosis unit
It is connected by the outer network router of wind power plant and the WEB server of wind farm control center, realizes interconnection Netcom between the two
Letter is equipped with fault diagnosis software program two in remote fault diagnosis unit, when the fault diagnosis software program two is performed,
The function that remote fault diagnosis unit is realized includes：The export of the partial data of data processing and failure diagnosis unit is transmitted to remote
Journey diagnostic center carries out offline failure by various atlas analysis and database, knowledge base data to wind generating set vibration state
Positioning finally provides maintenance program, realizes remote fault diagnosis.
It is using advantageous effect caused by above-mentioned technical proposal：A kind of wind based on wireless network provided by the invention
Motor group Vibration Condition Monitoring system, is mainly used for double-fed wind generator unit, and the wireless-transmission network and wind power plant of use are original
Optical fiber ring network be completely independent, be independent of each other；The capacity of data can be unrestricted, by reasonable arrangement network access data,
Network congestion can be effectively avoided, improves the status monitoring efficiency of Wind turbines, reduces monitoring intensity；Monitoring data are from Wind turbines
It is transmitted to after wind farm control center server, remote diagnostic center, Er Qieneng can also be directly transferred to by internet
Realize that Wind turbines data collection station, wind farm control center vibration monitoring and fault diagnosis server and remote oscillation are supervised
The long-range intercommunication between fault diagnosis server three is surveyed, so can original number be checked according to fault diagnosis demand in time
According to, it is long-range to adjust Wind turbines data acquisition unit and wind farm control center vibration monitoring and failure diagnosis unit, pass through
Failure is monitored so as to which accident and damage be avoided to occur.This opens entire wind generating set vibration status monitoring and fault diagnosis system
Hair and debugging provide good platform.
Description of the drawings
Fig. 1 is the wind generating set vibration condition monitoring system structural frames provided in an embodiment of the present invention based on wireless network
Figure；
Fig. 2 is single-hop networks model topology figure provided in an embodiment of the present invention；
Fig. 3 is ad hoc network provided in an embodiment of the present invention (Mesh) topological diagram；
Fig. 4 is multihop network plain structural model topological diagram provided in an embodiment of the present invention；
Fig. 5 is multihop network hierarchy structure model topological diagram provided in an embodiment of the present invention.
Specific embodiment
With reference to the accompanying drawings and examples, the specific embodiment of the present invention is described in further detail.Implement below
Example is not limited to the scope of the present invention for illustrating the present invention.
As shown in Figure 1, in the present embodiment, the wind generating set vibration condition monitoring system based on wireless network is adopted including data
Collect unit, wireless transmission unit, data processing and failure diagnosis unit and remote fault diagnosis unit.
Data acquisition unit includes vibrating sensor module, synthetical collection processing module and microcomputer, is responsible for single
Acquisition, processing, storage, the early warning of wind generating set vibration Condition Monitoring Data judge.
Different vibrating sensors is installed in multiple positions on the driving-chains such as the main shaft, gear-box, generator of Wind turbines,
Including low-frequency acceleration sensor, intermediate frequency acceleration transducer, sound transducer, speed probe.Wherein low frequency acceleration passes
Sensor is separately mounted to main spindle front bearing horizontal level, mainshaft rear bearing axial position, gear-box primary planet pinion horizontal position
It puts；Intermediate frequency acceleration transducer be separately mounted to gear-box secondary planetary gear upright position, gearbox intermediate shaft axial position,
High speed shaft of gearbox output terminal horizontal level, generator drive end horizontal level, generator anti-drive end horizontal level；Sound passes
Sensor is separately mounted to gear-box bottom and cabin；Speed probe is mounted near the brake disc at generator drive end.
Synthetical collection processing module includes one or more simultaneous data-acquisitions of installation and opto-electronic conversion mould in cabin
Block, simultaneous data-acquisition are connected by photoelectric conversion module and optical fiber with microcomputer, and synchronous collecting card is used to gather, locate
Vibration sensor signal is managed, photoelectric converter is used for the conversion of fiber-optic signal between simultaneous data-acquisition and microcomputer,
The common transmitting for completing vibration sensor signal.
In order to facilitate debugging and safeguard data acquisition unit, microcomputer installation bottom of towe one, microcomputer with it is comprehensive
It is connected between conjunction acquisition processing module by optical fiber, monitoring of software program one and database is stored in the microcomputer
One, the function of performing microcomputer by performing the program one includes, and controls at vibrating sensor module and synthetical collection
It manages module to carry out wind generating set vibration state monitoring in real time, monitoring data are carried out to analyze and store in real time, while passes through peak
Value, virtual value, kurtosis value, peak factor, pulse factor, crest factor, nargin factor these characteristic parameters setting different stage
Alarm threshold value, the present embodiment includes level-one, two level, three-level alarm threshold value.It is reported if certain sensor measured value is more than setting
Alert threshold value, then according to the control strategy of systemic presupposition before and after the server of wind farm control center sends warning message and alarm
Partial data.
Data processing and failure diagnosis unit include being installed on a set of server of wind farm control center, multiple servers
Common cooperation, for receiving and handling the data that industrial personal computer returns in each Wind turbines.By DataSocket technologies to each
The operating status of a Wind turbines, communications status synchronize monitoring, according to the control strategy of system to each Wind turbines
Real time data and historical data carry out comprehensive analysis and diagnosis.The set server includes application server, backup server, data
Storehouse server, fault diagnosis server and WEB server.Wind generating set vibration status monitoring software is installed in application server
Program two can synchronize interaction, the monitoring of software with the monitoring of software program one in the microcomputer of each Wind turbines
Program two is performed, and it is to monitor the operating status of each unit to make the function that system is realized, including running, shutting down, the feelings of early warning
Condition, signal strength, handling capacity, the connection of monitoring wireless network perform the control strategy of whole system, while to each wind
The data acquisition unit of motor group carries out parameter modification；Backup server is responsible for the redundancy of application server, prevents application service
Device failure and influence whole system；Database server is responsible for each wind turbine that storage is transmitted by wireless-transmission network
The partial data of group, for the fault diagnosis of system；Fault diagnosis software program one is installed, the event in fault diagnosis server
Barrier diagnostic software program one is performed the function of realizing fault diagnosis server and is, according to each wind in database server
The partial data of motor group carries out detailed atlas analysis to the failure of each Wind turbines；WEB server is responsible for the remote of system
Journey accesses, and remote fault diagnosis is carried out convenient for expert.In order to improve the overall stability of monitoring system, ensure some important realities
When parameter have record, add in data recording function in the monitoring of software of wind farm control center server, ensure when monitoring system
When network failure, which occurs, for system cannot correctly transmit data, historgraphic data recording is carried out, historical record can be found after normal transmission.
By wireless between the microcomputer of each Wind turbines and data processing and the server of failure diagnosis unit
Transmission unit uses specific wireless-transmission network into row data communication.
Wireless-transmission network uses the pattern that backbone network is combined with subnet, completely only with the original optical fiber ring network of wind power plant
Vertical, wherein backbone network is responsible for data remote, and subnet is responsible for local data's convergence, can realize expansion wireless coverage in a relay fashion
Scope reaches wireless network roaming, so as to solve the remote transmission problem of multicomputer.
Wireless transmission unit includes multiple wireless transmission terminals, multiple wireless relay modules and multiple radio receiving terminals.
Microcomputer carries out double-direction radio with wireless transmission terminal by multimode fibre or outdoor shielding netting wire and is connected, by acquisition
Data input wireless transmission unit be wirelessly transferred, each wireless transmission terminal by the specific wireless-transmission network via
The relay of wireless relay module carries out double-direction radio with radio receiving terminal and is connected, radio receiving terminal and data processing and failure
It is bi-directionally connected between diagnosis unit by multimode fibre or outdoor shielding netting wire.
Wireless transmission terminal is mounted on Wind turbines near zone, and attaches gain directional antenna, a Wind turbines
A corresponding wireless transmission terminal, for sending the synchrodata after being pre-processed in column foot in microcomputer.Wireless relay
Module is mounted on the central area of multiple Wind turbines, adds omnidirectional antenna and double-polarization plate antenna (horizontal 120 ° of lobe),
For multiple Wind turbines signals in receives link, while wireless signal is delivered in relays from a relay point in next
After point, and new wireless coverage area is formed, so as to form multiple wireless relay covering point relay patterns, be finally reached extension nothing
The purpose of the lid scope of gauze network.Radio receiving terminal is mounted on wind farm control center near zone, and additional cuts palisade is thrown
Object plane antenna, most multiple Wind turbines signals are transmitted to the server farm of wind farm control center at last.
In specific implementation, wireless transmission terminal, wireless relay module and radio receiving terminal mainly use model
ENH500, ENS500, ENH700, ENH900 and additional omnidirectional antenna, polarized plate-shaped antenna, cutting palisade parabola antenna
Deng.
According to different Wind turbines position distribution situations, different wireless network transmissions models is taken, including single-hop network
Network model, the planar structure of multihop network, the layered structure of multihop network, wherein, without using in wireless in single-hop networks model
After module, only including wireless transmission terminal and radio receiving terminal.
In the present embodiment, using the method based on sub-clustering, entire wind-powered electricity generation field areas is divided into a series of virtual cells,
All Wind turbines are divided into respective cells according to geographical location, each round apoplexy motor are provided by agreement as node
Group state in which.It is general only there are one the situation about perceiving in cell region of being activated with the Wind turbines in cluster,
His Wind turbines enter sleep state.During normal transmission, only from first source node (i.e. wireless transmission terminal) to
Aggregation node (i.e. radio receiving terminal) is established a shortest path and is started, other nodes are incrementally connected in increment tree
On nearest node (i.e. wireless relay module), increase the number that path is shared by constantly adjusting the position of aggregators
Amount so that volume of transmitted data during communication is minimum.
Numerous Wind turbines are different clusters according to different principle compositions, and there are one cluster head and several clusters for each cluster
Member.Wind turbines in cluster are the elementary cells for completing information gathering, and cluster head is mainly responsible for and collects information in cluster, and and its
Its cluster carries out information exchange, so just forms a subnet and collects, the hierarchical structure of major network teletransmission.
For the Wind turbines in 10 kilometers of visual ranges of wind farm control center, using single-hop networks model, this
Kind networking model is simple and fast.It is generally combined using AP (Access Point) and Client, if as shown in Fig. 2, AP connections
Client be easy to cause link congestion and co-channel interference too much.
Wind turbines or closely non-visual for being evenly distributed and apart from 5 kilometers of wind farm control center or more
The Wind turbines of scope, in order to save energy and extend network lifetime, it is necessary to transmitted data volume is reduced as far as possible, and
Shorten transmitting range.Therefore, such case realizes data transmission using the planar structure of multihop network.In multihop network structure
In, wireless transmission terminal sends the data collected to radio receiving terminal by one or more wireless relay modules,
So as to the energy consumption being effectively reduced needed for communication.In planar structure, work of each wireless transmission terminal played in networking process
With being identical, the status of all wireless transmission terminals is equal, has completely the same functional characteristic.Common model has
Mesh ad hoc network cellular network models, as shown in figure 3, its advantage is that a node can not only transmit and receive information, also
Router can be served as to its neighbouring node forwarding information, the progress of other links can be automatically selected when some node link failure
Data transmission.But with the interconnection of more nodes and the increase of possible number of paths, total bandwidth also greatly increases.
In data-centered data acquisition, all nodes hair of mode that aggregation node generally use floods into specified region
Query messages are sent, only there is the node of inquiry data just to respond aggregation node for those, and each node is by multihop path with converging
Poly- node communicates, and is relayed other nodes in network.When in Wind turbines distributed areas and wind power plant control
The heart has barrier to block, and when can not form line-of-sight transmission, multihop network planar structure pattern as shown in Figure 4 may be employed.It is first
First collect the data of subnet with multiple clusters, then pass through independent wireless relay module forwards data.
For 10 kilometers or more of distribution, distribution is scattered or closely Wind turbines of non-visual range, may be employed more
The layered structure of network is jumped, as shown in Figure 5.In layered structure, wireless transmission terminal is organized into a series of cluster, each cluster
It is made of multiple member nodes and a cluster head node.Cluster member is needed first its data sending to cluster head, then will by cluster head
Data sending is to aggregation node.In this configuration, the node having compared with low energy can be used as cluster head processing cluster member to receive
The data arrived, and will treated data sending to aggregation node.This network structure can not only reduce the energy consumption of communication, and
And can business load between balance nodes, and improve the scalability of network, better adapt to the variation of network size.For this
The layered structure of kind multihop network actually may be employed wireless bridge and realize remote transmission, wherein covered in subnet by cluster head
Lid wireless transmission terminal can add 90 ° of directional aerials；The wireless transmission terminal additional omnidirectional antenna of cluster head；It is selected as relaying
Terminal uses back-to-back repeater mode, and additional directional aerial；Radio receiving terminal adds parabola antenna.
In addition, using layered structure data fusion can be carried out in cluster head, the data volume sent to aggregation node is reduced, from
And improve the energy efficiency of network.
In order to ensure the real-time of data transmission, integrality, safety between each Wind turbines and wind farm control center
Property etc., so sub-clustering must be periodically carried out, the business load between ability each node of active balance.
In each cluster and between associated cluster, carry out data transmission by certain transmission strategy, reduce gathering around for link
It is stifled, so as to improve the energy efficiency of network.The transmission strategy includes：
When Wind turbines normal operation, Wind turbines in each cluster and pressed between the server of wind farm control center
Certain real time data is sent according to time difference timing；When some Wind turbines failure early warning, then the wind-powered electricity generation is preferentially sent
The warning data of unit；If with the early warning simultaneously of multiple units in cluster, carried out respectively according to preset priority rule
Data transmission and transmission control data order；When between Wind turbines and the server of wind farm control center enter idle period
Or in communication link when data volume is smaller, then the data not sent before reissuing；When the server of wind farm control center is excellent
When first checking some running of wind generating set situation and real time data, then the real time data of the prioritised transmission Wind turbines；Work as association
Multiple units in cluster break down simultaneously early warning when, then need according to failure priority and the unit quantity of related link circuits again
Planning association cluster.
Remote fault diagnosis unit is connected by the outer network router of wind power plant and the WEB server of wind farm control center
It connects, realizes internet communication between the two, fault diagnosis software program two is installed in remote fault diagnosis unit, when the journey
Sequence is performed, and the function that remote fault diagnosis unit is realized includes：By data processing and the partial data of failure diagnosis unit
Export is transmitted to remote diagnostic center, by various atlas analysis and database, knowledge base data to wind generating set vibration state
Offline fault location is carried out, finally provides maintenance program, realizes remote fault diagnosis.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention is described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that：It still may be used
Either which part or all technical characteristic are equal with modifying to the technical solution recorded in previous embodiment
It replaces；And these modifications or replacement, the essence of appropriate technical solution is not made to depart from the model that the claims in the present invention are limited
It encloses.
Claims (10)
1. a kind of wind generating set vibration condition monitoring system based on wireless network, it is characterised in that：Including data acquisition unit,
Wireless transmission unit and data processing and failure diagnosis unit；
The data acquisition unit includes vibrating sensor module, synthetical collection processing module and microcomputer, the vibration
The input terminal of the output terminal connection synthetical collection processing module of sensor assembly, the output terminal connection of synthetical collection processing module are micro-
The input terminal of type industrial personal computer；
The vibrating sensor module includes different types of vibrating sensor, the master being separately mounted on wind turbine transmission chain
Axis, gear-box, multiple positions of generator；
The synthetical collection processing module includes the one or more simultaneous data-acquisitions being mounted in cabin and opto-electronic conversion
Module, simultaneous data-acquisition are connected by photoelectric conversion module and optical fiber with microcomputer, synchronous collecting card for gather,
Vibration sensor signal is handled, photoelectric converter is used for turn of fiber-optic signal between simultaneous data-acquisition and microcomputer
It changes, the common transmitting for completing vibration sensor signal；
The microcomputer is mounted on bottom of towe, is connected between microcomputer and synthetical collection processing module by optical fiber；Institute
It states and monitoring of software program one and database one is stored in microcomputer, realize microcomputer by performing the program one
Function include, vibrating sensor module and synthetical collection processing module is controlled to supervise wind generating set vibration state in real time
Survey, to monitoring data carry out in real time analyze and store, meanwhile, by peak value, virtual value, kurtosis value, peak factor, pulse because
Number, crest factor, the alarm threshold value of nargin factor these characteristic parameters setting different stage, when certain sensor measured value of acquisition
During more than setting alarm threshold value, then alarm signal is sent to data processing and failure diagnosis unit according to the control strategy of systemic presupposition
Partial data before and after breath and alarm；
The data processing and failure diagnosis unit include a set of server arranged on wind farm control center, in the set server
Wind generating set vibration status monitoring software program and fault diagnosis software program are stored with, it can be with the miniature work of each Wind turbines
Monitoring of software program one in control machine synchronizes interaction, when the program in server is performed, what which realized
Function is：The data that microcomputer returns in each Wind turbines are received and handle, by DataSocket technologies to each
The operating status of Wind turbines, communications status synchronize monitoring, according to the control strategy of systemic presupposition to each Wind turbines
Real time data and historical data carry out comprehensive analysis with diagnosis；
By being specifically wirelessly transferred between the data acquisition unit of each Wind turbines and data processing and failure diagnosis unit
Unit is into row data communication；The mould that the wireless-transmission network that the wireless transmission unit uses is combined for backbone network with subnet
Formula is completely independent with the original optical fiber ring network of wind power plant, and wherein backbone network is responsible for data remote, and subnet is responsible for local data's remittance
It is poly-, expand wireless coverage in a relay fashion.
2. the wind generating set vibration condition monitoring system according to claim 1 based on wireless network, it is characterised in that：Institute
Stating vibrating sensor module includes acceleration transducer, sound transducer, speed probe；Wherein acceleration transducer includes low
Frequency acceleration sensing and intermediate frequency acceleration transducer, low-frequency acceleration sensor be separately mounted to main spindle front bearing horizontal level,
Mainshaft rear bearing axial position, gear-box primary planet pinion horizontal level；Intermediate frequency acceleration transducer is separately mounted to gear
Case secondary planetary gear upright position, gearbox intermediate shaft axial position, high speed shaft of gearbox output terminal horizontal level, generator
Drive end horizontal level, generator anti-drive end horizontal level；Sound transducer is separately mounted to gear-box bottom and cabin；Turn
Fast sensor is mounted near the brake disc at generator drive end.
3. the wind generating set vibration condition monitoring system according to claim 1 based on wireless network, it is characterised in that：Institute
Stating wireless transmission unit includes multiple wireless transmission terminals, multiple wireless relay modules and multiple radio receiving terminals；It is described micro-
Type industrial personal computer carries out double-direction radio with wireless transmission terminal by multimode fibre or outdoor shielding netting wire and is connected, by the number of acquisition
It is wirelessly transferred according to input wireless transmission unit, each wireless transmission terminal is by the specific wireless-transmission network via nothing
The relay of line trunk module carries out double-direction radio with radio receiving terminal and is connected, and radio receiving terminal is examined with data processing and failure
It is bi-directionally connected between disconnected unit by multimode fibre or outdoor shielding netting wire；
The wireless transmission terminal, mounted on Wind turbines near zone, and attaches gain directional antenna, for sending data
The synchrodata of collecting unit；The wireless relay module mounted on the central area of multiple Wind turbines, adds omnidirectional antenna
And double-polarization plate antenna, for multiple Wind turbines signals in receives link, while by wireless signal from a relay point
It delivers in relays to next relay point, and forms new wireless coverage area, form multiple wireless relay covering point relay patterns；
The radio receiving terminal, mounted on wind farm control center near zone, additional cuts palisade parabola antenna, for will be more
A Wind turbines signal is ultimately delivered to data processing and failure diagnosis unit.
4. the wind generating set vibration condition monitoring system according to claim 3 based on wireless network, it is characterised in that：Nothing
The model of transmission network network takes different models with specific reference to different Wind turbines position distribution situations, correspondence, specific to wrap
Include single-hop networks model, the plain structural model of multihop network, the hierarchy structure model of multihop network；
For the Wind turbines in 10 kilometers of visual ranges of wind farm control center, using single-hop networks model, the model
In without using wireless relay module；
For being evenly distributed and Wind turbines apart from 5 kilometers of wind farm control center or more or closely non-visual range
Wind turbines, using the plain structural model of multihop network；
For the Wind turbines apart from 10 kilometers of wind farm control center or more, using the hierarchy structure model of multihop network.
5. the wind generating set vibration condition monitoring system according to claim 4 based on wireless network, it is characterised in that：Institute
It states single-hop networks model and specifically uses AP (Access Point) and Client integrated modes；The planar structure of the multihop network
Model specifically uses Mesh-only patterns；The hierarchy structure model of the multihop network specifically uses Mesh-AP patterns or nothing
Gauze bridge mode.
6. the wind generating set vibration condition monitoring system according to claim 4 based on wireless network, it is characterised in that：
The method that the wireless network transmissions model is based on sub-clustering forms Wind turbines to be different according to different principles
Cluster, and periodically carry out sub-clustering, each cluster are set there are one cluster head Wind turbines and several cluster member Wind turbines, in cluster
Cluster member's Wind turbines be complete information gathering elementary cell, and cluster head Wind turbines be responsible for collect cluster in information, and and its
Its cluster carries out information exchange, forms a subnet and collects, the hierarchical structure of major network teletransmission；In each cluster and associated cluster it
Between, carry out data transmission by the control strategy of systemic presupposition.
7. the wind generating set vibration condition monitoring system based on wireless network according to claim 1 or 6, feature exist
In：The control strategy includes：When Wind turbines normal operation, Wind turbines and wind farm control center in each cluster
Between server certain real time data is sent according to time difference timing；It is when some Wind turbines failure early warning, then excellent
First send the warning data of the Wind turbines；It is if advance according to monitoring of software with the early warning simultaneously of multiple Wind turbines in cluster
The priority rule of setting carries out data transmission and sends control data order respectively；When Wind turbines and wind farm control center
Server between data transmission when entering that data volume is smaller in idle period or communication link, then do not sent before reissuing
Data；When the server priority of wind farm control center checks some running of wind generating set situation and real time data, then preferentially
Transmit the real time data of the Wind turbines；When associate multiple units in cluster break down simultaneously early warning when, then need according to therefore
Barrier priority and the unit quantity of related link circuits plan association cluster again.
8. the wind generating set vibration condition monitoring system according to claim 1 based on wireless network, it is characterised in that：Number
Include application server, backup server, database server and failure according to a set of server of processing and failure diagnosis unit
Diagnosis server；Wind generating set vibration status monitoring software program two is installed in application server, it can be with each Wind turbines
Microcomputer in monitoring of software program one synchronize interaction, which is performed, and makes system real
Existing function is to monitor the operating status of each unit, and including running, shutting down, the situation of early warning, the signal of monitoring wireless network is strong
Degree, handling capacity, connection, perform the control strategy of whole system, at the same to the data acquisition units of each Wind turbines into
Row parameter is changed；Backup server is responsible for the redundancy of application server, prevents application server failure and influences whole system；Number
It is responsible for the partial data for each Wind turbines that storage is transmitted by wireless-transmission network according to storehouse server, for system
Fault diagnosis；Fault diagnosis software program one is installed, which is performed in fault diagnosis server
When make fault diagnosis server realize function be, according to the partial data of each Wind turbines in database server to each
The failure of Wind turbines carries out detailed atlas analysis.
9. the wind generating set vibration condition monitoring system according to claim 8 based on wireless network, it is characterised in that：
Data recording function is further included in monitoring of software program two in the server of wind farm control center, is led when network failure occurs
When data cannot correctly be transmitted by causing monitoring system, historgraphic data recording is carried out, historical record can be found after normal transmission.
10. the wind generating set vibration condition monitoring system according to claim 8 based on wireless network, it is characterised in that：
A set of server of data processing and failure diagnosis unit further includes WEB server, is responsible for the remote access of system, convenient for expert
Carry out remote fault diagnosis；
Wind generating set vibration condition monitoring system based on wireless network further includes remote fault diagnosis unit, which passes through wind
The outer network router of electric field and the WEB server of wind farm control center connect, and realize internet communication between the two, remotely
Fault diagnosis software program two is installed in failure diagnosis unit, when the fault diagnosis software program two is performed, it is long-range therefore
The function that barrier diagnosis unit is realized includes：The export of the partial data of data processing and failure diagnosis unit is transmitted to remote diagnosis
Center carries out offline fault location, most by various atlas analysis and database, knowledge base data to wind generating set vibration state
Maintenance program is provided eventually, realizes remote fault diagnosis.
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