CN102706562A - Offshore wind turbine state monitoring system and method based on wireless sensor network - Google Patents
Offshore wind turbine state monitoring system and method based on wireless sensor network Download PDFInfo
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Abstract
The invention discloses an offshore wind turbine state monitoring system based on a wireless sensor network. The offshore wind turbine state monitoring system comprises a plurality of state monitoring sensor nodes which are used for acquiring and processing information and transferring the information to cluster head sensor nodes, a plurality of the cluster head sensor nodes which are used for acquiring and processing the information transmitted by all the state monitoring sensor nodes in a cluster and transferring the information to a master control center and the master control center which is arranged at the bottom of a tower tube of a wind turbine, wherein the plurality of the state monitoring sensor nodes are respectively arranged on blades, a transmission system and the tower tube of the wind turbine; and the plurality of the cluster head sensor nodes are respectively arranged on a wheel hub, an engine room deck and the joints of all the sections of the tower tube of the wind turbine. The system has the advantages of convenience and quickness in layout, comprehensive monitoring, high-efficient communication and the like, and can facilitate fault early warning and service life prediction of the offshore wind turbine under the unattended situation, be conductive to providing a scientific basis for preventive maintenance of the wind turbine, reduce the fault incidence rate and further reduce the maintenance cost of the wind turbine.
Description
Technical field
The present invention relates to a kind of offshore wind farm set state monitoring system and method, can realize the real-time monitoring of offshore wind farm unit critical component health status based on wireless sensor network.
Background technology
Because sea turn aboundresources; Have that generated energy is big, but generating dutation is long, noiseless restriction, many-sided advantage such as land occupation large-scale development not; Offshore wind farm is convenient to on-site elimination generally near the conventional electric power load center simultaneously, has removed the problem of long distance powedr transmission from; Therefore along with the continuous progress of wind power technology, develop the new trend that offshore wind farm becomes the wind-force industry development energetically.Yet though the sea turn resource has more potentiality to be exploited with land comparing, environmental aspect is very abominable, and offshore wind farm unit operation risk is far longer than land unit, and failure rate is high; Simultaneously, the marine wind electric field accesibility is poor, and the maintenance of wind-powered electricity generation unit need be employed speedboat, lift-on and lift-off ship, or even helicopter, and maintenance work is difficult in time carry out because of inclement weather toward the contact meeting, and these have all increased maintenance cost greatly.For a long time, the mode of traditional periodic maintenance (scheduled maintenance) and breakdown maintenance (correction maintenance) is mainly adopted in the operation maintenance of offshore wind farm unit.Wherein, periodic maintenance promptly moves the routine maintenance behind 2500h and the 5000h, and the maintenance mode under this stopped status is difficult to the overall understanding equipment operation condition, in time finds potential faults.And breakdown maintenance is after fault takes place, just to carry out, and promptly corrective is safeguarded, owing to lack the understanding of failure cause and prior preparation, maintenance job often can not in time be carried out targetedly, causes losing further increase.At present, the maintenance cost of separate unit offshore wind farm unit generally is at least 2 times of land unit, and the maintenance cost of whole marine wind electric field has had a strong impact on the productivity effect of wind energy turbine set up to the 20%-25% of its income.Therefore,, must reliably monitor, a large amount of correctives safeguarded changed into preventive maintenance, reduce the generation of catastrophic failure the offshore wind farm operating states of the units in order to reduce economic loss and maintenance cost.
At present the wind-powered electricity generation set state monitoring system in the practical application is carried out information acquisition and transmission based on the wire communication mode mostly, and since the development of land wind-powered electricity generation early than offshore wind farm, this communication mode application in the wind energy turbine set by land is comparatively ripe.And maritime environment is abominable, and wired facility is disposed difficulty, and the status monitoring of offshore wind farm unit is still far from perfect.Continuous development along with offshore wind farm; The wind energy turbine set capacity constantly increases; Adopt the status monitoring of wire communication mode to have open defect: 1) marine wind electric field especially the deep-sea wind energy turbine set away from land; Accesibility is poor, and the wire communication facility layout difficulty is big, construction cost is high, is unfavorable for the structure of condition monitoring system; 2) offshore wind farm set state monitoring information amount is big, communication pressure is big; The information transmission mode of traditional " point-to-multipoint " and centralized information processing manner are often adopted in wire communication; Efficient is low, real-time is poor, reliability that can't the Guarantee Status monitoring system.
Summary of the invention
Goal of the invention: difficult wiring, cost height, data acquisition and transmission quality to adopting the wire communication mode to exist in the existing offshore wind farm set state monitoring are difficult to shortcomings such as assurance, and the present invention provides a kind of offshore wind farm set state monitoring system based on wireless sensor network.Make up offshore wind farm set state monitoring system based on wireless sensor network; Be deployed in and adopt communication to realize the collection and the transmission of information between the sensor on the offshore wind farm unit; Need not to set up wire communication facility; System's laying is flexible, information acquisition is accurate comprehensively, information transmission security is reliable, information processing is efficiently quick, and helping provides new thinking for the reliable monitoring of offshore wind farm unit health status.The present invention also provides a kind of offshore wind farm set state monitoring method based on wireless sensor network, realizes to all monitored parts in the offshore wind farm set state monitoring system with by the efficient of effective management of deployment sensor node and raising information processing and transmission.
Technical scheme: a kind of offshore wind farm set state monitoring system based on wireless sensor network; Comprise a plurality of status monitoring sensor nodes that are used for information acquisition and processing and information passed to the first sensor node of its bunch; A plurality of collections and handle bunch in all status monitoring sensor nodes transmission information and information passed to bunch first sensor node of Master Control Center and the Master Control Center that is located at wind-powered electricity generation unit tower tube bottom; Said a plurality of status monitoring sensor node is located at respectively on blade, kinematic train and the tower tube of wind-powered electricity generation unit; Said a plurality of bunches of first sensor nodes are not located at wheel hub, the stowed on deck place of wind-powered electricity generation unit and respectively save tower tube junction.
Big quantity research shows that the blade of wind-powered electricity generation unit, cabin (comprising main bearing, gear case and generator etc.), tower tube are the parts that breaks down easily.And the offshore wind farm unit receives the influence of marine physical environment, will consider especially that also salt fog ice and snow, wave splash to the corrosion of wind-powered electricity generation unit parts.Therefore, the present invention according in the existing document to the achievement in research of each critical piece status monitoring of wind-powered electricity generation unit
[1-3], in conjunction with marine physical environment characteristics, offshore wind farm set state monitoring technology is proposed, relate generally to three parts of wind-powered electricity generation unit: blade, kinematic train, tower tube.Dispose the wireless senser of some according to each several part operation work characteristics and realize status monitoring wind-powered electricity generation generating set main body part.The various kinds of sensors of being disposed in the present invention is wireless senser, is called sensor node.
A said status monitoring sensor node and a bunch first sensor node adopt the rigid mechanical fastening means to be arranged on the wind-powered electricity generation unit, perhaps are installed on the wind-powered electricity generation unit through cementing agent or magnetic support.
Said status monitoring sensor node is made up of sensor assembly, processor module, wireless communication module and power module; Wherein sensor assembly is given processor module with the information transmission that collects, and processor module carries out analog to digital conversion and sends to a bunch first sensor node through the information of wireless communication module after with conversion process the information that collects.
The structure of said bunch of first sensor node and status monitoring sensor node are similar, but only are made up of processor module, wireless communication module and power module, promptly do not comprise sensor assembly, do not have the function of information monitoring, but energy is comparatively sufficient; After the information that said processor module sends the status monitoring sensor node is carried out fusion treatment, and the information after will handling passes to the Master Control Center of wind-powered electricity generation unit tower tube bottom.The transmission information of all status monitoring sensor nodes in bunch first sensor node is responsible for collecting and handle bunch, and information passed to Master Control Center.
The said status monitoring sensor node that is installed on the blade is respectively strain transducer node and corrosion sensor node; The suction surface of said blade and pressure face are respectively installed 1 strain transducer node (radially) and 1 corrosion sensor node near blade tip, middle part, three positions of root, amount to 6 strain transducer nodes and 6 corrosion sensor nodes.Violent deformation in the wind power generation unit blade operational process causes blade fault easily, shortens leaf longevity, and simultaneously for the offshore wind farm unit, blade is also met to border on the sea and gone up the heavy corrosion of salt fog.Therefore, the present invention disposes strain transducer and corrosion sensor at blade-section.The variation of monitoring blade stress in time guarantees that blade operates in the suitable range of stress on the one hand, considers the influence of marine salt mist environment on the other hand, the state that emphasis monitoring blade is corroded.
The said status monitoring sensor node that is installed on the kinematic train is respectively displacement transducer node, acceleration transducer node, noise transducer node and temperature sensor node; The kinematic train of said wind-powered electricity generation unit comprises main bearing, gear case and generator; The punishment of said main bearing front and back bearings and gear case planetary stage is vertical, level, axial 3 directions respectively are provided with 1 group of displacement transducer node; Because the vibration frequency of wind-powered electricity generation unit gear case intergrade bearing, high speed level bearing, generator is higher; And high frequency band signal is insensitive to measurement direction, therefore at gear case intergrade bearing, high speed level bearing, generator front and back bearings place 1 acceleration transducer node only is set respectively in the horizontal direction; Simultaneously, 1 noise transducer node is set at the gear case place; 1 noise transducer node and 1 temperature sensor node are set at the generator place.
The said status monitoring sensor node that is installed on the tower tube is respectively displacement transducer node and corrosion sensor node; Because the vibration frequency in tower tube and cabin is lower, and low-band signal is comparatively responsive to measurement direction, therefore on said tower tube, divides vertically, level, axial 3 directions are disposed 1 group of displacement transducer node; Said tower tube is a unit with each joint, disposes 4 groups of displacement transducer nodes respectively on each joint, and each evenly disposes 2 groups of displacement transducer nodes both sides, is symmetrically distributed; Each joint of said tower tube goes up and the displacement transducer node same position place on it is provided with 1 corrosion sensor node.
Though wind-powered electricity generation unit tower tube and blade are compared the probability that breaks down with kinematic train less; But it receives the influence of blade and kinematic train easily and vibration in various degree takes place, thereby the operational efficiency and the unit component life of wind-powered electricity generation unit had a negative impact.Simultaneously, the offshore wind farm unit receives marine natural environment influence, and the tower tube also very receives the corrosion that salt fog corrodes and wave splashes easily.Therefore, adopt vibration transducer and corrosion sensor to come the vibrational state and the etch state of monitoring tower tube among the present invention.
Said wheel hub, stowed on deck place, respectively save tower tube junction, dispose the first sensor node of several bunches respectively, wherein, wheel hub is disposed 1 bunch of first sensor node, is responsible for information fusion and transmission to all status monitoring sensor nodes on three blades; The stowed on deck center is disposed 1 bunch of first sensor node, is responsible for the information fusion and the transmission of all status monitoring sensor nodes on the kinematic train of cabin; 1 bunch of first sensor node is disposed in symmetria bilateralis respectively in every joint tower tube junction, is responsible for the information fusion and the transmission of all status monitoring sensor nodes on every joint tower tube respective side respectively.
A kind of offshore wind farm set state monitoring method based on wireless sensor network comprises the steps:
Beneficial effect: compared with prior art, offshore wind farm set state monitoring system and method based on wireless sensor network provided by the present invention can realize the real-time monitoring of offshore wind farm unit critical component health status.Have following two aspect advantages:
1. system's laying is convenient, dirigibility is high.Among the present invention, the sensor node that is deployed on each parts all adopts communication.Owing to need not connect up, not only practiced thrift big quantity space and cost, and be particularly suitable for the applied environment of offshore wind farm unit away from land, accesibility difference.Simultaneously, because sensor node can be confirmed type, position and number according to application demand, therefore increased the dirigibility of offshore wind farm set state monitoring.
2. monitoring information is comprehensive, communication efficiency is high.In the present invention; Though the information that each sensor node is gathered is limited; But since same parts deploy a plurality of status monitoring sensor nodes and be distributed in different parts on the parts, therefore the information fusion of all the status monitoring sensor nodes on each parts just can be reflected together comparatively all sidedly the running status of these parts.Simultaneously, can know that the offshore wind farm set state monitoring system that makes up among the present invention is the wireless sensor network of a layering through preceding text.The status monitoring sensor node is a basal layer, is responsible for the collection of information; Bunch first sensor node is the middle layer, is responsible for transmission of Information; Master Control Center is top, is responsible for the further analysis of information, thereby carries out the differentiation of wind-powered electricity generation set state health status.In addition, sensor node had all carried out information to merge to a certain extent before transmitting information to last layer.Therefore, the collection of distributed information, fusion and transmission, the sensor node way to manage of layering can both significantly improve the efficient that monitoring information is handled.
Description of drawings
Fig. 1 is the deployment synoptic diagram of blade upper sensor node in the embodiment of the invention; Wherein, figure (a) is the deployment synoptic diagram of status monitoring sensor node on 1 blade pressure surface; Bunch first sensor node synoptic diagram that is provided with for wheel hub among the figure (b);
Fig. 2 is the deployment synoptic diagram of kinematic train each parts upper sensor node in cabin in the embodiment of the invention;
Fig. 3 is for cabin in the embodiment of the invention, respectively save the deployment synoptic diagram of tower tube upper sensor node; Wherein, figure (a) is a tower tube top cross-sectional view; Figure (b) is the synoptic diagram of A side senser node deployment.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment; Further illustrate the present invention; Should understand these embodiment only be used to the present invention is described and be not used in the restriction scope of the present invention; After having read the present invention, those skilled in the art all fall within the application's accompanying claims institute restricted portion to the modification of the various equivalent form of values of the present invention.
One, based on the offshore wind farm set state monitoring system of wireless sensor network
The accurate collection of status information and reliable transmission are two basic functions of condition monitoring system, must guarantee the reliability of these two functions when making up monitoring system through the deployment of sensor node.The scope of considering the sensor node Information Monitoring all is limited with the transmission range of information, therefore disposes sensor node at present embodiment according to following principle:
1. choose the characteristic quantity type that can accurately reflect offshore wind farm unit fault signature; And the status monitoring point that directly influences the characteristic quantity validity of extracting; As the fundamental basis of the sensor node type of confirming required deployment, node location, interstitial content, guarantee the reliability of monitoring system status information capture;
2. replenish the sensor node of disposing some; Make all the sensors node can constitute the wireless network of connection; Realize that status information is by sensor node group of motors tower tube bottom Master Control Center (Control Center aweather; CC) transmission, the reliability of assurance monitoring system status information transmission.
1, blade, kinematic train, tower tube each several part status monitoring sensor node deployment
1. the concrete deployment way of blade-section is: near blade tip, middle part, three positions of root 1 strain transducer node (radially) and 1 corrosion sensor node are installed respectively at blade suction surface and pressure face, are amounted to 6 strain transducer nodes and 6 corrosion sensor nodes.
2. cabin part: the wind-powered electricity generation set engine room partly is mainly kinematic train, comprises these critical components such as main bearing, gear case, generator.The fault signature of these parts is distinguished through its vibrational state and noise easily; Simultaneously; The fault of generator can also reflect from its variation of temperature, so the sensor that wind-powered electricity generation unit running part is disposed is vibration transducer, noise transducer, temperature sensor.Wherein, according to the height of measuring-signal frequency, vibration transducer is selected two types: acceleration transducer (high frequency), displacement transducer (low frequency).When disposing, select a certain type wherein for use according to the height of monitored component vibration frequency.
Concrete deployment way is: because the vibration frequency of wind-powered electricity generation set main shaft, gear case planetary stage is lower; And low-band signal is comparatively responsive to measurement direction, and therefore vertical in wind-powered electricity generation set main shaft front and back bearings, the punishment of gear case planetary stage, level, axial 3 directions are respectively disposed 1 group of displacement transducer node; Because the vibration frequency of wind-powered electricity generation unit gear case intergrade bearing, high speed level bearing, generator is higher; And high frequency band signal is insensitive to measurement direction, therefore only respectively disposes 1 acceleration transducer node in the horizontal direction at gear case intergrade bearing, high speed level bearing, generator front and back bearings place.Simultaneously, dispose 1 noise transducer node at the gear case place; Dispose 1 noise transducer node and 1 temperature sensor node at the generator place.
3. the concrete deployment way of tower tube part is: because the tower tube is lower with the vibration frequency in cabin, and low-band signal is comparatively responsive to measurement direction, therefore on the tower tube, divides vertically, level, axial 3 directions are disposed 1 group of displacement transducer node.The tower tube is a unit with each joint, disposes 4 groups respectively on each joint, and each evenly disposes 2 groups both sides, is symmetrically distributed.Simultaneously, on each joint of tower tube, dispose 1 corrosion sensor node with displacement transducer node same position place.
2, the deployment of bunch first sensor node
In order to realize the high efficiency of information fusion and transmission, wheel hub, stowed on deck place, respectively save tower tube junction, dispose the first sensor node of several bunches respectively.The first sensor node of these bunches only has the ability of information fusion and transmission, and does not possess the ability of data acquisition.Wheel hub is disposed 1 bunch of first sensor node, is responsible for information fusion and transmission to all status monitoring sensor nodes on three blades; The stowed on deck center is disposed 1 bunch of first sensor node, is responsible for the information fusion and the transmission of all status monitoring sensor nodes on the kinematic train of cabin; 1 bunch of first sensor node is disposed in symmetria bilateralis respectively in every joint tower tube junction, is responsible for the information fusion and the transmission of all status monitoring sensor nodes on every joint tower tube respective side respectively.
The deployment scenario of all the sensors node is as shown in table 1 on the offshore wind farm unit.The all the sensors node constitutes the state monitoring wireless sensor network of wind-powered electricity generation unit, the i.e. condition monitoring system of wind-powered electricity generation unit.
Table 1 offshore wind farm set state monitoring system sensor node deployment
Two, based on the offshore wind farm set state monitoring method of wireless sensor network
In order to realize all monitored parts in the offshore wind farm set state monitoring system and to be disposed effective management of sensor node and improve the efficient of information processing and transmission, through name and the mark rule of formulating monitored parts and sensor node the offshore wind farm set state monitoring method based on wireless sensor network is proposed in the present embodiment.
1, the name of sensor node and sign
1. the name of monitored parts and sign: blade (B), a n blade tip (BTn), n blade middle part (BMn), a n root of blade (BRn); Main spindle front bearing (MF), mainshaft rear bearing (MB); Gear case (G), gear case planetary stage (GP), gear case intergrade (GM), gearbox high-speed level (GH); Generator (Ge), generator front bearing (GeF), generator rear bearing (GeB); Tower tube (T), tower tube n joint A side (TAn), tower tube n save B side (TBn).
2. by the name of deployable state monitoring sensor node and sign: strain transducer node (S), corrosion sensor node (C), acceleration transducer node (A), displacement transducer node (D), noise transducer node (N), temperature sensor node (T).
3. by the name and sign of deployable state monitoring sensor node direction: do not have (N), vertical (V), level (H), axial (A).
4. disposed the name and the sign of bunch first sensor node: wheel hub bunch first sensor node (CHH), tower tube and junction, cabin bunch first sensor node (CHN), n joint tower tube junction A side bunch first sensor node (CHTAn).
2, the name and the sign of status monitoring sensor node on the monitored parts of wind-powered electricity generation unit
The name of status monitoring sensor node and sign are according to following order on the monitored parts of wind-powered electricity generation unit: monitored parts-and by deployable state monitoring sensor node-by deployable state monitoring sensor node direction-bunch first sensor node.For example, the 3rd root of blade strain transducer node is BR3-S-N-CHH, and the corrosion sensor node is BR3-C-N-CHH.
3, the communication means of sensor node
Through above name and identification method, communicate according to following principle between the wind-powered electricity generation unit upper sensor node:
1. all kinds of status monitoring sensor nodes are periodically gathered and the status information of the monitored parts of rough handling, simultaneously with the status information of rough handling through optimal path through bunch in other status monitoring sensor node pass to the first sensor node of its bunch with multi-hop routing to communicate mode.With intercoming mutually between the status monitoring sensor node in the cluster.Be that the end identical status monitoring sensor node of sign belongs to same bunch, it is communicated by letter with the identical bunch first sensor node of head end sign, and selects optimal path.Optimal path is generally shortest path.For example, all status monitoring sensor node end signs are the first node CHH of its bunch on 3 blades, so can communicate between them.Yet, because close together between the status monitoring sensor node on the same blade, so the status monitoring sensor node on the blade is selected the optimal path of the adjacent node formation transmission information on the same blade usually.For example, the communication path of the strain transducer node on the 3rd blade tip, middle part, the root is: B3T-S-N-CHH → BM3-S-N-CHH → BR3-S-N-CHH → CHH.
2. the first sensor node of each bunch is periodically collected from the status information of the next monitored parts of bunch internal state monitoring sensor node transmission, and information is further merged.Simultaneously information is passed to the Master Control Center of wind-powered electricity generation unit tower tube bottom from top to bottom with multi-hop routing to communicate mode through the first sensor node of other bunch.Can intercom mutually between the first sensor node of each bunch.Be that head end starts bunch first sensor node that is that identifies with CH, can intercom mutually each other.Because all there is 1 bunch of first sensor node both sides, every joint tower tube junction, therefore bunch first sensor node of both sides is respectively 1 group in communication process, periodically is responsible for the work that information is transmitted by turns.For example, if the tower tube is divided into 4 joints, when a tower tube A side bunch first sensor node was worked, wheel hub bunch first sensor node with the communication path that information passes to Master Control Center was:
CHH→CHN→CHTA1→CHTA2→CHTA3→CHTA4→CC。
3. the Master Control Center of wind-powered electricity generation unit is collected the transmission information of the first node of each bunch, and promptly the status information of each major part of wind-powered electricity generation unit through further data analysis and processing, is in time judged the health status of wind-powered electricity generation unit.
With China's sharp SL3000 offshore wind farm unit is that example specifies sensor node deployment method and communication mode in the offshore wind farm set state monitoring system.The sharp SL3000 offshore wind farm unit critical piece parameter of China is: rotor diameter: 90 meters; Length of blade: 45 meters; Hub height: 80 meters; Tower tube: 4 joints.
Fig. 1 is the dispositions method of blade upper sensor node.Wherein, figure (a) is the dispositions method of status monitoring sensor node on 1 blade pressure surface, and ⑴, ⑵, ⑶ are respectively blade tip, middle part and root, dispose 1 strain transducer and 1 corrosion sensor respectively, and the facial arranging method of tension force is identical.Other two blades adopt same dispositions method.Among the figure (b) 1. is wheel hub, disposes 1 bunch of first sensor node here.
The communication path of information transmission is on each blade: ⑴ → ⑵ → ⑶ → 1..
Fig. 2 is the dispositions method of each parts upper sensor node of cabin kinematic train.Wherein, ⑴, ⑵, ⑶ are respectively front and back bearings of main shaft and gear case planetary stage, in vertical, level, radially respectively dispose 1 displacement transducer on 3 directions.⑷, ⑸, ⑹, ⑺ are respectively gear case intergrade, high speed level and generator front and back bearings, respectively dispose 1 acceleration transducer in the horizontal direction.⑻ place disposes 1 noise transducer, and the noise the during operation of monitoring gear case changes.⑼ place disposes 1 noise transducer and 1 temperature sensor, noise and temperature variation during the monitoring generator operation.1. be the stowed on deck middle part, dispose 1 bunch of first sensor node.
The communication path of information transmission is on the kinematic train of cabin: ⑴ → ⑵ → ⑶ → ⑻ → ⑷ → ⑸ → 1.; ⑺ → ⑼ → ⑹ → 1..
Fig. 3 is the cabin, respectively saves the dispositions method of tower tube upper sensor node.Figure (a) is a tower tube top cross-sectional view, for the ease of the deployment of sensor node, is the boundary with tower tube diameter dotted line, and the tower tube is divided into A, B both sides.Figure (b) is the situation of A side senser node deployment.Wherein, 1.-4. ⑴-⑻ place deployable state monitoring sensor is respectively and respectively saves tower tube junction, and bunch first sensor node is disposed in these positions.
The communication path of information transmission is on the tower tube: ⑴ → ⑵ → 1.; ⑶ → ⑷ → 2.; ⑸ → ⑹ → 3.; ⑺ → ⑻ → 4.; 1. → 2. → 3. → 4..
Claims (9)
1. offshore wind farm set state monitoring system based on wireless sensor network; It is characterized in that: comprise a plurality of status monitoring sensor nodes that are used for information acquisition and processing and information passed to the first sensor node of its bunch; A plurality of collections and handle bunch in all status monitoring sensor nodes transmission information and information passed to bunch first sensor node of Master Control Center and the Master Control Center that is located at wind-powered electricity generation unit tower tube bottom; Said a plurality of status monitoring sensor node is located at respectively on blade, kinematic train and the tower tube of wind-powered electricity generation unit; Said a plurality of bunches of first sensor nodes are not located at wheel hub, the stowed on deck place of wind-powered electricity generation unit and respectively save tower tube junction.
2. the offshore wind farm set state monitoring system based on wireless sensor network as claimed in claim 1; It is characterized in that: a said status monitoring sensor node and a bunch first sensor node adopt the rigid mechanical fastening means to be arranged on the wind-powered electricity generation unit, perhaps are installed on the wind-powered electricity generation unit through cementing agent or magnetic support.
3. the offshore wind farm set state monitoring system based on wireless sensor network as claimed in claim 1; It is characterized in that: said status monitoring sensor node is made up of sensor assembly, processor module, wireless communication module and power module; Wherein sensor assembly is given processor module with the information transmission that collects, and processor module carries out analog to digital conversion and sends to a bunch first sensor node through the information of wireless communication module after with conversion process the information that collects.
4. the offshore wind farm set state monitoring system based on wireless sensor network as claimed in claim 1, it is characterized in that: said bunch of first sensor node is made up of processor module, wireless communication module and power module; After the information that said processor module sends the status monitoring sensor node is carried out fusion treatment, and the information after will handling passes to the Master Control Center of wind-powered electricity generation unit tower tube bottom.The transmission information of all status monitoring sensor nodes in bunch first sensor node is responsible for collecting and handle bunch, and information passed to Master Control Center.
5. the offshore wind farm set state monitoring system based on wireless sensor network as claimed in claim 1 is characterized in that: the said status monitoring sensor node that is installed on the blade is respectively strain transducer node and corrosion sensor node; The suction surface of said blade and pressure face are respectively installed 1 strain transducer node and 1 corrosion sensor node near blade tip, middle part, three positions of root, amount to 6 strain transducer nodes and 6 corrosion sensor nodes.
6. the offshore wind farm set state monitoring system based on wireless sensor network as claimed in claim 1 is characterized in that: the said status monitoring sensor node that is installed on the kinematic train is respectively displacement transducer node, acceleration transducer node, noise transducer node and temperature sensor node; The kinematic train of said wind-powered electricity generation unit comprises main bearing, gear case and generator; The punishment of said main bearing front and back bearings and gear case planetary stage is vertical, level, axial 3 directions respectively are provided with 1 group of displacement transducer node; At gear case intergrade bearing, high speed level bearing, generator front and back bearings place 1 acceleration transducer node only is set respectively in the horizontal direction; Simultaneously, 1 noise transducer node is set at the gear case place; 1 noise transducer node and 1 temperature sensor node are set at the generator place.
7. the offshore wind farm set state monitoring system based on wireless sensor network as claimed in claim 1 is characterized in that: the said status monitoring sensor node that is installed on the tower tube is respectively displacement transducer node and corrosion sensor node; Divide vertical, level, axial 3 directions to dispose 1 group of displacement transducer node on the said tower tube; Said tower tube is a unit with each joint, disposes 4 groups of displacement transducer nodes respectively on each joint, and each evenly disposes 2 groups of displacement transducer nodes both sides, is symmetrically distributed; Each joint of said tower tube goes up and the displacement transducer node same position place on it is provided with 1 corrosion sensor node.
8. the offshore wind farm set state monitoring system based on wireless sensor network as claimed in claim 1; It is characterized in that: said wheel hub, stowed on deck place, respectively save tower tube junction; Dispose the first sensor node of several bunches respectively; Wherein, wheel hub is disposed 1 bunch of first sensor node, is responsible for information fusion and transmission to all status monitoring sensor nodes on three blades; The stowed on deck center is disposed 1 bunch of first sensor node, is responsible for the information fusion and the transmission of all status monitoring sensor nodes on the kinematic train of cabin; 1 bunch of first sensor node is disposed in symmetria bilateralis respectively in every joint tower tube junction.
9. one kind is used for each described offshore wind farm set state monitoring method based on wireless sensor network like claim 1-8, it is characterized in that, comprises the steps:
Step 1 is named sign to blade, kinematic train, tower tube, status monitoring sensor node and a bunch first sensor node;
Step 2; All kinds of status monitoring sensor nodes are periodically gathered and the status information of the monitored parts of rough handling, simultaneously with the status information of rough handling through optimal path through bunch in other status monitoring sensor node pass to the first sensor node of its bunch with multi-hop routing to communicate mode; Wherein, with intercoming mutually between the status monitoring sensor node in the cluster, promptly sign identical status monitoring sensor node in end belongs to same bunch, and it is communicated by letter with the identical bunch first sensor node of head end sign, and selects optimal path; Said optimal path is a shortest path;
Step 3, the first sensor node of each bunch are periodically collected from the status information of the next monitored parts of bunch internal state monitoring sensor node transmission, and information is further merged; Simultaneously information is passed to the Master Control Center of wind-powered electricity generation unit tower tube bottom through the first sensor node of other bunch with multi-hop routing to communicate mode from top to bottom, wherein, can intercom mutually between the first sensor node of each bunch; Because all there is 1 bunch of first sensor node both sides, every joint tower tube junction, therefore bunch first sensor node of both sides is respectively 1 group in communication process, periodically is responsible for the work that information is transmitted by turns;
Step 4, the Master Control Center of wind-powered electricity generation unit is collected the transmission information of the first node of each bunch, and promptly the status information of each major part of wind-powered electricity generation unit through further data analysis and processing, is in time judged the health status of wind-powered electricity generation unit.
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Cited By (14)
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| CN103063428A (en) * | 2013-01-25 | 2013-04-24 | 国电联合动力技术有限公司 | Wireless monitoring system and method for modal parameter of blade of fan |
| CN103402210A (en) * | 2013-08-12 | 2013-11-20 | 河海大学 | Disposition method of offshore wind turbine condition monitoring sensor |
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| CN106921979A (en) * | 2017-03-16 | 2017-07-04 | 河海大学 | A kind of construction method of Wind turbines wireless supervisory control system |
| CN108111583A (en) * | 2017-12-14 | 2018-06-01 | 成都运达科技股份有限公司 | A kind of bogie rotary part safety monitoring system based on wireless sensor network |
| CN108518315A (en) * | 2018-03-20 | 2018-09-11 | 深圳众厉电力科技有限公司 | A kind of Wind turbines intelligent monitor system based on cloud storage technology |
| CN109238703A (en) * | 2018-09-26 | 2019-01-18 | 东莞绿邦智能科技有限公司 | Rotary equipment bearings abnormal vibration intelligent checking system |
| CN109406096A (en) * | 2018-11-21 | 2019-03-01 | 大连理工大学 | A kind of floating-type offshore wind power unit measuring device and its method |
| CN109599015A (en) * | 2018-11-21 | 2019-04-09 | 大连理工大学 | The mixed model experimental provision and its experimental method of floating-type offshore wind power unit |
| CN109505740A (en) * | 2018-12-04 | 2019-03-22 | 浙江海洋大学 | A kind of Wind turbines status information monitoring method of adaptive bandwidth |
| CN113048025A (en) * | 2019-12-27 | 2021-06-29 | 新疆金风科技股份有限公司 | State monitoring system and method for wind generating set |
| CN111365198A (en) * | 2020-03-10 | 2020-07-03 | 中国海洋大学 | Vibration monitoring method and system for offshore wind turbine generator |
| CN112502910A (en) * | 2020-11-27 | 2021-03-16 | 中国联合网络通信集团有限公司 | Communication system of fan and offshore wind farm |
| CN114065957A (en) * | 2021-10-13 | 2022-02-18 | 浙江富日进材料科技有限公司 | WSN-based equipment monitoring method and system and readable medium |
| CN114065957B (en) * | 2021-10-13 | 2023-12-05 | 浙江富日进材料科技有限公司 | Equipment monitoring method, system and readable medium based on WSN |
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