CN103604622A - On-line monitoring and instant warning and fault diagnosis system of wind generating set - Google Patents
On-line monitoring and instant warning and fault diagnosis system of wind generating set Download PDFInfo
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Abstract
The invention discloses an on-line monitoring and instant warning and fault diagnosis system of a wind generating set. The on-line monitoring and instant warning and fault diagnosis system is composed of a lower computer (1) and an upper computer (5), wherein the lower computer (1) is installed on the wind generating set and is in communication with the upper computer (5) through a wired or wireless network. When the on-line monitoring and instant warning and fault diagnosis system works, the upper computer (5) transmits a start instruction to the lower computer (1), and then the lower computer (1) starts to collect signal data, carries out on-line instant warning on abnormalities and faults and stores signals or signal feature information; the upper computer (5) receives and stores the signals uploaded by the lower computer (1) or the signal feature information uploaded by the lower computer (1), analyzes and processes the signals or the signal feature information and generates various report forms according to needs. The on-line monitoring and instant warning and fault diagnosis system can carry out on-line instant warning and trend analysis on the operating state of the wind generating set and carry out forecasting and early warning on the potential faults, and has significant value for reducing sudden faults of the wind generating set, reducing loss caused by standby and the like.
Description
Technical field
The present invention designs wind-powered electricity generation unit condition monitoring and fault diagnosis technical field, a kind of wind-powered electricity generation unit of special design on-line monitoring instant alarming and fault diagnosis system.
Background technology
Fault during wind power generating set operation is one of key affecting wind-powered electricity generation operation enterprise benefit.In general, running of wind generating set fault is the key factor that determines that can unit operation steady in a long-term, and its mechanism of production is complicated, relates to many factors.The running status of unit is mainly understood in the operation maintenance of wind energy turbine set at present by the mode of the monitoring of unit master control system and regular visit.Owing to forming containing much information of annex running status, calculation process process is complicated, and the processing of the mass data of particularly obtaining for high sample frequency needs cycle regular hour; And fault diagnosis is afterwards often not as good as retrieving the damage that fault causes wind-powered electricity generation unit.Therefore, build wind-powered electricity generation unit on-line monitoring, Realtime Alerts and fault diagnosis system, for monitoring operating condition, taking appropriate measures in time, the generation of prevention and minimizing unit fault, and carry out fault pre-alarming by depth data analysis, and realize foreseeability maintenance, be all very important.
Abroad, research for large-scale wind electricity operating states of the units monitoring system has formed a collection of practical product, for example, the SKFWindCon system of Aktiebolaget SKF, the VIBXPERTFFT Data collection and signal analysis instrument of the BentlyNevada system of General Electric Co. Limited, Pruftechnik company, VIBRO-IC system of the on-line condition monitoring system of VIBROWEBXP diagnosis type, German SCHENCKVIBRO GMBH company etc.At present also there are many units to research and develop corresponding product for the status monitoring of wind power generating set at home, more representational mainly containing: JK07460 aerogenerator driving unit fault diagnostic device, Northwestern Polytechnical University's rotating machinery and the CAMD-6100 of wind energy plant observing and controlling research institute of the wind-powered electricity generation unit on-line monitoring system of Jin Feng scientific & technical corporation, Beijing Tang Zhi Science and Technology Ltd. and the DASP system of Dongfa Inst. of Vibration & Noise Technology etc.The analysis of these products and diagnostic function mostly a little less than, and the common systematic comparison of the strong product of analytic function is complicated, involves great expense.Literature survey shows, no matter be that the existing running of wind generating set Condition Monitoring Technology of home or overseas and system mostly adopt slave computer signals collecting, upload the pattern that long-range host computer is analyzed and noted abnormalities, reports to the police, real-time device fault is generally lacked to online instant alarming function, the fault discovery cycle that wind-powered electricity generation unit is occurred is longer, and bringing is therefrom sometimes catastrophic consequence.
Summary of the invention
The problem to be solved in the present invention is to provide a kind of wind-powered electricity generation unit on-line monitoring instant alarming and fault diagnosis system, the problem of real time fail being reported to the police not in time to solve prior art and system, simultaneously, a kind of data analysis and method for diagnosing faults are provided, can realize running of wind generating set Trend Analysis and fault pre-alarming.
For achieving the above object, the invention provides a kind of wind-powered electricity generation unit on-line monitoring instant alarming and fault diagnosis system, by slave computer (1) and host computer (5), formed, slave computer (1) is for signals collecting, online Realtime Alerts and network service, host computer (2) is for controlling described slave computer (1), the signal data gathering being analyzed and generating report forms, slave computer (1) is installed on wind-powered electricity generation unit, is connected and communicates by letter with host computer (5) by wired or wireless network, described slave computer (1) comprises signal acquisition module (2), online fault instant alarming module (3) and network communication interface module (4), wherein, described signal acquisition module (2) comprises data acquisition card (9), signals collecting interface (10) and signal condition module (11), be used for gathering described wind-powered electricity generation unit parts diagnostic message, described online fault instant alarming module (3) comprises Signal Pretreatment (12), signal specific feature extraction (13), feature is differentiated (14) characteristic signal expert knowledge library (15), online fault instant alarming (16) and signal or signal characteristic storage (17), for the signal of described signal acquisition module collection is processed immediately, differentiate, and when noting abnormalities instant alarming, described network communication interface module (4) is for communicating with described host computer (5), receive the steering order of described host computer (5), and send information to designated terminal, described host computer (5) comprises and slave computer communication module (6), data analysis and fault diagnosis module (7) and report generation module (8), wherein, described and slave computer communication module (6) are for to described slave computer (1) sending controling instruction, and receive the information that described slave computer (1) is uploaded, described data analysis and fault diagnosis module (7) comprise signature analysis (18), trend analysis (19), traditional analysis (20), Mathematical Method (21) and intelligent analysis method (22), for the signal data that described slave computer (1) is uploaded, analyze, described report generation module (8) is for generating required form.As shown in Figure 1.
Described slave computer (1) is arranged on wind-powered electricity generation unit, is connected, and carries out data communication by described network communication interface module (4) and described host computer (5) by described signal acquisition module (2) with the various sensors that are arranged on wind-powered electricity generation unit.Described slave computer comprises at least one CPU (central processing unit) (CPU).
Described signal acquisition module (2) comprises capture card (9), signals collecting interface (10) and signal condition module (11), and the sensor (sensor type 1) that does not need to carry out signal condition directly connects described signals collecting interface (10); The sensor (sensor type 2) that need to carry out signal condition is connected to described signals collecting interface (10) by described signal condition module (11).The each several part that described signal acquisition module (2) comprises connects according to relation shown in Fig. 2, wherein, and direction of arrow representative information or energy flow direction.
Described online fault instant alarming module (3) is arranged on described slave computer (1), comprise the processes such as Signal Pretreatment (12), signal characteristic abstraction (13), characteristic signal expert knowledge library (15), feature differentiation (14), online fault instant alarming (16) and signal storage (17), as shown in Figure 3, wherein, the direction of arrow represents process execution sequence or information flow direction; Described signal characteristic refers to and comprises temporal signatures, as index and frequency domain characters such as peak-to-peak value, effective value, variance, crest factor, kurtosis, as the signal characteristic of the indexs such as frequency spectrum, amplitude and phase place; Described Signal Pretreatment (12) is to processing such as the signal collected quick filter of described signal acquisition module (2), noise reductions; Described signal specific feature extraction (13) refers to that the signal characteristic scope to limiting according to described characteristic signal expert knowledge library (15) carries out signal characteristic abstraction to the result of described Signal Pretreatment (12); Described Signal Pretreatment (12) and described signal specific feature extraction (13) can adopt hardware circuit to realize improving the real-time that signal is processed; Described in described signal characteristic, characteristic signal expert knowledge library (15) is to set up in advance and be stored in the inner one group of abnormality juding rule of described slave computer (1) and the set of set state signal characteristic, and the set of described set state signal characteristic refers to the set of the signal characteristic of description wind-powered electricity generation normal operating condition of unit, parts normal condition, the various defect states of parts, the various abnormality of parts etc.Described online fault instant alarming (16) comprises by described network communication interface module (4) and sends warning message to described host computer (5), and can with forms such as notes, send warning message to particular terminal when needed.Described online fault instant alarming module (3) is when carrying out, first the live signal of online acquisition is carried out to described Signal Pretreatment (12), then carry out described signal characteristic abstraction (13), next the signal characteristic extracting is carried out to described feature differentiation (14) under the support of characteristic signal expert knowledge library (15); As note abnormalities, carry out described online fault instant alarming (16), and the position, parts place of breaking down according to the report the test of described signal characteristic differentiation (14); As no abnormal, carry out described signal or signal characteristic storage (17).
Described network communication interface module (4) comprises wired or wave point and the network communication services program of deferring to network communication protocol, be responsible for receiving instruction and sending data to described host computer (5) from described host computer (5), comprise various signals or signal characteristic information and online fault instant alarming information etc., meanwhile, also support to send warning message to designated terminal with forms such as note, multimedia messages.
Described host computer (5) is by carrying out data communication with slave computer communication module (6) and described slave computer (1), receive signal or signal characteristic information and the online instant alarming information of the running of wind generating set state that described slave computer (1) gathers, meanwhile, to described slave computer (1), send various steering orders.Described host computer comprises at least one CPU (central processing unit) (CPU).Described host computer (5) can be arranged on, also can not be arranged on described wind-powered electricity generation unit.
Described and slave computer communication module (6) comprise wired or wave point and communication control program, and described communication control program comprises to described slave computer (1) sending controling instruction, receives running of wind generating set status signal or signal characteristic information supervisor process that described slave computer (1) failure warning information and described slave computer (1) gather.
Described data analysis and fault diagnosis module (7) comprise the set of signature analysis (18), trend analysis (19), traditional analysis (20), Mathematical Method (21) and intelligent analysis method (22) supervisor, as shown in Figure 4; Described signature analysis (18) refers to carries out temporal signatures to described running of wind generating set status signal, as index and frequency domain characters such as peak-to-peak value, effective value, variance, crest factor, kurtosis, as the signature analysis of frequency spectrum, amplitude and phase place etc.; Described trend analysis (19) refer to by described running of wind generating set status data information by the cycle of appointment to two phases or continuous identical index of many phases or ratio carries out determining base contrast and chain rate contrasts, draw their increase and decrease change direction, number and amplitude, to disclose running of wind generating set trend and unit parts are broken down or defect is carried out anticipation; Described traditional analysis method (20) refers to described running of wind generating set status data information is carried out to vibration analysis, oil analysis, noise analysis, infrared measurement of temperature analysis or Nondestructive Detection etc.; Described mathematical methods (21) refers to temporal model diagnosis based on probability statistics, fuzzy diagnosis method, fault tree analysis, based on Bayesian decision criterion and the pattern-recongnition method based on linear and non-linear discriminant function, fault diagnosis method, gray system diagnosis, wavelet analysis, chaos analysis and fractal geometry analytic approach etc. based on apart from criterion; Described intelligent diagnostics method (22) refers to the analytical approachs such as expert system, neural network, genetic algorithm, fuzzy logic and large data technique.
Described report generation module (8), for generating and print the required various forms of wind-powered electricity generation operation enterprise, comprises the forms such as fault instant alarming, operating states of the units trend, operating states of the units early warning, data transmit-receive daily record.
Wind-powered electricity generation unit on-line monitoring instant alarming provided by the invention and fault diagnosis system can on-line real time monitoring wind-powered electricity generation unit running status, and can be when fault occurs instant alarming, avoided the serious consequence of bringing to wind-powered electricity generation operation enterprise not in time because of fault alarm; Simultaneously; by described data analysis and fault diagnosis module (7), running of wind generating set state is carried out to anticipation; diagnose out the running of wind generating set or the parts fault that exist or be about to produce; remind in time the maintenance of wind-powered electricity generation operation enterprise; the failure rate that improves running of wind generating set life-span, reduction running of wind generating set, reduces the economic loss of bringing because of wind-powered electricity generation unit disorderly closedown.
Accompanying drawing explanation
Fig. 1 is the structural representation of wind-powered electricity generation unit on-line monitoring instant alarming of the present invention and fault diagnosis system.
Fig. 2 is the signal acquisition module structural representation of wind-powered electricity generation unit online monitoring alarm of the present invention and fault diagnosis system.
Fig. 3 is the online fault instant alarming modular structure schematic diagram of wind-powered electricity generation unit online monitoring alarm of the present invention and fault diagnosis system.
Fig. 4 is that data analysis and the fault diagnosis module of wind-powered electricity generation unit online monitoring alarm of the present invention and fault diagnosis system forms schematic diagram.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
Below in conjunction with specific embodiment, the present invention is illustrated, certainly, the present invention is not limited to this specific embodiment, and the known general replacement of one of ordinary skilled in the art should be encompassed in protection scope of the present invention undoubtedly.
Secondly, the present invention have been described in detail in conjunction with schematic diagram, when the embodiment of the present invention is described in detail in detail, wind-powered electricity generation unit on-line monitoring instant alarming and fault diagnosis system has been carried out to specific description, should not using this as limitation of the invention.
Fig. 1 is the general structure schematic diagram of wind-powered electricity generation unit on-line monitoring instant alarming of the present invention and fault diagnosis system.As shown in Figure 1, wind-powered electricity generation unit online monitoring alarm of the present invention and fault diagnosis system are comprised of slave computer 1 and host computer 5, and wherein, slave computer 1 comprises signal acquisition module 2, online fault instant alarming module 3 and network communication interface module 4; Host computer 5 comprises and slave computer communication module 6, data analysis and fault diagnosis module 7 and report generation module 8.
Described slave computer 1 is arranged on wind-powered electricity generation unit, is connected, and communicates with host computer by described network communication interface module 4 by described signal acquisition module 2 with the various sensors that are arranged on wind-powered electricity generation unit.Described slave computer 1 can be selected single-chip microcomputer, desktop PC or the industrial computer with central processing unit; Described slave computer generally moves real time operating system, as real time operating systems such as Realtime Linux, iEAX, VRTX etc., and can support one to multiple dissimilar data acquisition card.
Described signal acquisition module 2 is supported online real-time data acquisition, comprise capture card 9, signals collecting interface 10 and signal condition module 11, the sensor being arranged on wind-powered electricity generation unit connects by signals collecting, 10 or signal condition module 11 be connected to signal acquisition module 2, wherein, described capture card 9 can be selected one to multiple synchronous or non-synchronous data capture card; Signals collecting interface 10 is terminal strips supporting with capture card 2; The path that signal condition module 11 comprises signal conditioning circuit by one or more forms, each path comprises a bars modulate circuit, sensor can be produced ± V, ± mA and ± signal transmittings such as mV become the needed various signals of client and isolate to be sent to described signals collecting interface 10.
Described online fault instant alarming module 3 has comprised Signal Pretreatment 12, signal characteristic abstraction 13, characteristic signal expert knowledge library 15, feature differentiates 14, online fault instant alarming 16 and signal or signal characteristic are stored database and the program processs such as 17, wherein, Signal Pretreatment 12 is that the running of wind generating set status information that described signal acquisition module 2 is collected is carried out fast processing, as carry out signal filtering, nonlinear transformations etc. are removed to disturb and are processed, as low frequency filtering can intercept or weaken higher than the high-frequency signal of setting critical value, effectively remove signal noise, high-pass filtering intercepts or weakens lower than the low frequency signal of setting critical value, contribute to outstanding fault-signal, described signal characteristic abstraction 13 is the temporal signatures to signal, as index and frequency domain characters such as peak-to-peak value, effective value, variance, crest factor, kurtosis, as frequency spectrum, amplitude and phase place etc., extract, for the described signal characteristic with characteristic signal expert knowledge library 15, carry out aspect ratio pair, the set that described characteristic signal expert knowledge library 15 has comprised abnormality juding rule or set state signal characteristic data, described abnormality juding rule refers to the description of the corresponding relation of signal characteristic data and its faults, and described set state signal characteristic data acquisition refers to that signal characteristic data and its reflect the description of the corresponding relation of running status, described online fault instant alarming 16 refer to when described feature differentiate 14 while finding that described signal characteristic data meet described abnormality juding rule at once to described host computer 5 or send warning message with forms such as note, multimedia messages to designated terminal, when serious, can directly shut down, described signal or signal characteristic storage refer to stores the result of described signal or signal characteristic abstraction, if desired, for improving processing speed, online fault instant alarming module 3 can adopt hardware circuit to realize, as selects TDS 3FFT to realize Fast Fourier Transform (FFT).
Described network communication interface module 4 is comprised of wired or wireless interface and the network communication services program of deferring to network communication protocol, described wired or wireless interface is as Ethernet card, WIFI wireless network card or 3G, 4G card of surfing Internet or asynchronous transmission standard interface (RS-232, RS-485 etc.) etc.; The described network communication services program of deferring to network communication protocol is responsible for realizing from described host computer 5 and is received instruction and send data to described host computer 5, the function that comprises various signals or signal characteristic data message and online Realtime Alerts information, when needed also can network, the form such as note, multimedia message sends warning message to designated terminal.
Described host computer 5 carries out data communication by described with slave computer communication module 6 and described slave computer 1, receive running of wind generating set status data information and online instant alarming information that described slave computer 1 gathers, meanwhile, to described slave computer 1, send various steering orders.Described host computer 5 is optional with industrial computer, desktop PC or panel computer etc., can move conventional operating system, as operating systems such as Windows, Linux or Android; Described host computer 5 also can be selected any mobile terminal with central processing unit.
Described and slave computer communication module 6 is comprised of wired or wireless interface and communication control program; Described wired or wireless interface is as Ethernet card, WIFI wireless network card or 3G, 4G card of surfing Internet and asynchronous transmission standard interface (as RS-232, RS-485 etc.) etc.; Described communication control program is mainly used to realize to described slave computer 1 sending controling instruction, receive the running of wind generating set status information supervisor function that failure warning information that described slave computer 1 sends and described slave computer 1 gather.
Described data analysis and fault diagnosis module 7 are comprised of described signature analysis 18, trend analysis 19, traditional analysis 20, Mathematical Method 21 and intelligent analysis method 22 supervisor bags, the wind-powered electricity generation unit status information that described data analysis and fault diagnosis module 7 are mainly used in described slave computer 1 to gather is carried out off-line analysis, to realize to the anticipation of running of wind generating set state or to occurring that parts fault carries out early warning future.When implementing, the described analytical approach that can select according to actual needs described data analysis and fault diagnosis module 7 to comprise.
Described report generation module 8 is mainly used in generating and prints the required various forms of wind-powered electricity generation operation enterprise, comprises the forms such as fault alarm, operating states of the units trend, operating states of the units early warning, data transmit-receive daily record.In actual enforcement, can define the described various statement forms that described report generation module comprises according to the requirement of different enterprises.
Wind-powered electricity generation unit online monitoring alarm of the present invention and fault diagnosis system are when work, by described host computer 5, to described slave computer 1, send enabled instruction, described slave computer 1 starts to carry out signal data acquisition, start described online fault instant alarming module 3 simultaneously, to signal collected, process online, and abnormal signal and fault are carried out to online instant alarming,, described signal or signal characteristic information are stored meanwhile; Described host computer 5 sends data transfer instruction to described slave computer 1, and accepts described signal or the signal characteristic information on described slave computer 1 that be stored in that described slave computer 1 uploads, and is stored on described host computer 5; On described host computer 5, can carry out analyzing and processing by 7 pairs of received described signal or signal characteristic informations of described data analysis and fault diagnosis module, obtain described running of wind generating set state trend, find fault and carry out failure prediction and early warning, and by described report generation module 8, generate described various forms as required.
The described online fault instant alarming module 3 of wind-powered electricity generation unit on-line monitoring instant alarming of the present invention and fault diagnosis system has solved prior art and system cannot be carried out the online problem to instant fault alarm to running of wind generating set state, simultaneously, the described data analysis that wind-powered electricity generation unit on-line monitoring instant alarming of the present invention and fault diagnosis system provide and fault diagnosis module 7 can be realized running of wind generating set Trend Analysis and the potential source of trouble is carried out to failure prediction and early warning, the heavy economic losses bringing for reduction wind-powered electricity generation unit catastrophic failure, promote operation enterprise maintenance efficiency, loss that minimizing brings due to wind-powered electricity generation unit fault or prophylactic repair standby etc. has important meaning and value.
Obviously, those skilled in the art can carry out various changes and modification to the present invention, under the premise without departing from the spirit and scope of the present invention, if within the modification that the present invention is made and modification belong to the scope of the claims in the present invention and equivalent technologies thereof, the present invention be also intended to comprise these change and modification interior.
Claims (7)
1. a wind-powered electricity generation unit on-line monitoring instant alarming and fault diagnosis system, it is characterized in that, comprise: slave computer (1) and host computer (5), slave computer (1) is for signals collecting, online Realtime Alerts and network service, host computer (2) is analyzed and generating report forms for the signal data of described slave computer (1) being controlled, slave computer (1) is gathered, slave computer (1) is installed on wind-powered electricity generation unit, communicates by wired or wireless network with host computer (5);
Described slave computer (1) comprises signal acquisition module (2), online fault instant alarming module (3) and network communication interface module (4), wherein,
Described signal acquisition module (2), for gathering described wind-powered electricity generation unit parts diagnostic message, comprises data acquisition card (9), signals collecting interface (10) and signal condition module (11),
Described online fault instant alarming module (3) is for immediately processing, differentiate the signal of described signal acquisition module collection, and when noting abnormalities instant alarming, comprise Signal Pretreatment (12), signal specific feature extraction (13), feature differentiation (14) characteristic signal expert knowledge library (15), online fault instant alarming (16) and signal or signal characteristic storage (17)
Described network communication interface module (4), for communicating with described host computer (5), receives the steering order of described host computer (5), and sends information to designated terminal;
Described host computer (5) comprises communication module (6), data analysis and fault diagnosis module (7) and report generation module (8), wherein,
Described and slave computer communication module (6) be for to described slave computer (1) sending controling instruction, and receive the information that slave computer (1) is uploaded,
Described data analysis and fault diagnosis module (7) are analyzed for the signal data that described slave computer (1) is uploaded, and comprise signature analysis (18), trend analysis (19),
Described report generation module (8) is for generating required form.
2. wind-powered electricity generation unit on-line monitoring instant alarming as claimed in claim 1 and fault diagnosis system, is characterized in that, described slave computer (1) adopts single-chip microcomputer or industrial computer.
3. wind-powered electricity generation unit on-line monitoring instant alarming as claimed in claim 1 and fault diagnosis system, is characterized in that, described online fault instant alarming module (3) adopts hardware circuit to realize acceleration.
4. wind-powered electricity generation unit on-line monitoring instant alarming as claimed in claim 1 and fault diagnosis system, it is characterized in that, described characteristic signal expert knowledge library (15) is consisted of abnormality juding rule and the set of set state signal characteristic, described abnormality juding rule refers to the corresponding relation of signal characteristic data and its fault reflecting, the set of described set state characteristic refers to the corresponding relation of signal characteristic data and its operating states of the units reflecting.
5. wind-powered electricity generation unit on-line monitoring instant alarming as claimed in claim 1 and fault diagnosis system, it is characterized in that, described network communication interface module (4) is comprised of wired or wireless interface and the network communication services program of deferring to network communication protocol, and can pass through the form transmission warning messages such as network, note, multimedia message to designated terminal.
6. wind-powered electricity generation unit on-line monitoring instant alarming as claimed in claim 1 and fault diagnosis system, is characterized in that, described host computer (5) adopts single-chip microcomputer, industrial computer or mobile terminal.
7. wind-powered electricity generation unit on-line monitoring instant alarming as claimed in claim 1 and fault diagnosis system, is characterized in that, described host computer (5) is communicated by letter with described slave computer (1) with slave computer communication module (6) by described.
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