CN109763944A - A kind of contactless monitoring system of offshore wind turbine blade fault and monitoring method - Google Patents

A kind of contactless monitoring system of offshore wind turbine blade fault and monitoring method Download PDF

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Publication number
CN109763944A
CN109763944A CN201910081150.2A CN201910081150A CN109763944A CN 109763944 A CN109763944 A CN 109763944A CN 201910081150 A CN201910081150 A CN 201910081150A CN 109763944 A CN109763944 A CN 109763944A
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wind turbine
aeroacoustics
offshore wind
acquisition
information
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CN109763944B (en
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綦声波
张亚男
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Ocean University of China
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Ocean University of China
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Abstract

The invention discloses a kind of contactless monitoring system of offshore wind turbine blade fault and monitoring methods, the system includes being arranged in offshore wind turbine foundation, meteorological information collection system on column foot or independent platform, it is arranged in the hydrological information collection system of offshore wind turbine surrounding waters, the aeroacoustics acquisition system being arranged on offshore wind turbine foundation or pylon, meteorological information collection system, hydrological information collection system and aeroacoustics acquisition system real-time data transmission collected are to acquisition node, wireless terminal transmission to data center on the bank is passed through by acquisition node again, data center, pass through Industrial Ethernet connection communication between monitoring system and monitoring device.Monitoring system disclosed in this invention does not need the original structure for destroying fan blade, while facilitating the maintenance of detection device yet.Both it had been able to satisfy traditional monitoring room detection requirement, while there are also remote computers and handheld device can be convenient on-site maintenance.

Description

A kind of contactless monitoring system of offshore wind turbine blade fault and monitoring method
Technical field
The invention belongs to instrument fields, in particular to sea of one of the field based on aeroacoustics signal characteristic The contactless monitoring system of upper fan blade fault and monitoring method.
Background technique
Traditional energy is the sun it is impossible to meet the sustainable development of resource and environment requirement, the final source of wind energy resources Can, it is inexhaustible, it is increasingly valued by people and pays close attention to, the progress of wind generating technology and maturation make Offshore wind farm becomes the important directions of wind generating technology development.
However, since marine wind electric field is generally built in intertidal zone or offshore sea waters, high construction cost, complicated ocean ring Border increases the operation and maintenance difficulties of offshore wind turbine.The device that fan blade is obtained as wind energy, reliability directly affect The power generating quality and efficiency of offshore wind farm unit, in addition, the more land fan blade size of offshore wind turbine blade is bigger, cost more Height, correspondingly, occur after catastrophe failure it is destructive it is bigger, economic loss is also higher.However, at present both at home and abroad about fan blade Fault detection and diagnosis method remains in the more rudimentary stage.Therefore, develop it is a kind of fan blade break down just Phase is detected in time is out of order and accurately identifies fault type, provides the real time on-line monitoring of support and foundation for the exclusion of failure System and monitoring method have important value.
The needs of sensor used in existing fan blade On-line Fault Detection mode are installed in fan blade in advance, On the one hand, this can have an adverse effect to the structure of fan blade, reduce the intensity of blade, increase the manufacture difficulty of blade;Separately On the one hand, for prefabricated sensor once breaking down, maintenance cost is very high.
Summary of the invention
The technical problem to be solved by the invention is to provide a kind of offshore wind turbine leaves based on aeroacoustics signal characteristic The contactless monitoring system of piece failure and monitoring method.
The present invention adopts the following technical scheme:
A kind of contactless monitoring system of offshore wind turbine blade fault, thes improvement is that: the system includes being arranged in Meteorological information collection system on offshore wind turbine foundation, column foot or independent platform, is arranged in the hydrology of offshore wind turbine surrounding waters Information acquisition system, the aeroacoustics acquisition system being arranged on offshore wind turbine foundation or pylon, meteorological information collection system, water Literary information acquisition system and aeroacoustics acquisition system real-time data transmission collected lead to acquisition node, then by acquisition node Wireless terminal transmission is crossed to data center on the bank, data center monitors and connects between system and monitoring device by Industrial Ethernet Connect letter.
Further, the quantity of offshore wind turbine be two or more, every Taiwan Straits upper fan be equipped with meteorological information collection system, Hydrological information collection system, aeroacoustics acquisition system, acquisition node and wireless terminal.
Further, the meteorological information collection system includes temperature sensor, humidity sensor, wind sensor, rain Quantity sensor and lightning sensors.
Further, the hydrological information collection system includes Wave Sensor, ocean current sensor and tide sensor.
Further, the aeroacoustics acquisition system includes acoustic sensor and acoustics signal processing unit, acoustics The measurement range of sensor is 20Hz -20kHz, and the sample frequency of acoustics signal processing unit digital analog converter is not less than 200kHz, acquisition digit are not less than 16, and acquisition channel is no less than 4 channels.
Further, wireless terminal sends data to data center on the bank in the way of microwave communication.
Further, the monitoring device includes central control room's computer monitoring platform, remote computer and hand-held sets It is standby.
A kind of contactless monitoring method of offshore wind turbine blade fault, using above-mentioned monitoring system, improvements exist In including the following steps:
(1) weather information is acquired by meteorological information collection system, correction wind is made an uproar, the noise of extreme storm, thunder, the patter of rain is dry It disturbs;By hydrological information collection system acquisition hydrographic information, the noise jamming of marine wave, stream, tide is corrected;It is adopted by aeroacoustics The aeroacoustics information of collecting system acquisition fan blade;Collection process is controlled by acquisition node and is passed through acquisition data wirelessly eventually End is transmitted to data center on the bank;
(2) the aeroacoustics information of weather information, hydrographic information and fan blade is subjected to the fusion of decision level information, corrects ring Interference of the border noise to aeroacoustics information collection, the multiple dimensioned sample by computational aeroacoustics information based on variation mode decomposition This entropy, i.e., the Sample Entropy of extraction time sequence on different scale are constructed the state set of eigenvectors of fan blade with this, passed through The time-frequency characteristics of building aeroacoustics information, the multiple dimensioned Sample Entropy that will be established with test sample are extracted in time frequency analyzing tool analysis Set of eigenvectors, which is input in neural network, to be learnt and is trained, and network weight and structure are constantly updated, and final convergence obtains The neural network model of fan blade fault identification and classification;
(3) neural network model is downloaded in monitoring system, monitoring system-computed newly collects aeroacoustics information Time-frequency characteristics are input in the neural network model and are identified and classified, while the neural network model can be according to new spy Levy timely update weight and neural network structure, the generalization ability of strength neural network;
(4) state and fault message of each Taiwan Straits upper fan blade are provided in real time by monitoring system, in the event of a failure to monitoring Equipment alert, at the same in monitoring device can with the state of each Taiwan Straits upper fan blade of real time inspection, and therefore Barrier is handled it when occurring.
Further, aeroacoustics acquisition system removes ocean using adaptive filter method according to the time-frequency characteristic of signal Environmental background noise interference, obtains pure fan blade aeroacoustics information.
The beneficial effects of the present invention are:
Monitoring system disclosed in this invention does not need the original structure for destroying fan blade, while facilitating detection device yet Maintenance.Both it had been able to satisfy traditional monitoring room detection requirement, while there are also remote computers and handheld device can be convenient on-site maintenance.
Monitoring method disclosed in this invention comprehensively and accurately describes blower gas by multi-sensor information fusion technology Moving noise signal and environmental background noise correct interference of the ambient noise to aeroacoustics information collection.Pass through self-adapting signal Processing method establishes offshore wind turbine blade aerodynamic acoustic feature vector set, is then realized by machine learning method to offshore wind turbine Blade state monitoring and fault identification.
Detailed description of the invention
Fig. 1 is the composition schematic diagram that system is monitored disclosed in the embodiment of the present invention 1;
Fig. 2 is the flow diagram of monitoring method disclosed in the embodiment of the present invention 1.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, right below in conjunction with drawings and examples The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and It is not used in the restriction present invention.
Embodiment 1, as shown in Figure 1, present embodiment discloses a kind of contactless monitoring system of offshore wind turbine blade fault, The system includes the meteorological information collection system being arranged on offshore wind turbine foundation, column foot or independent platform, is arranged in sea The hydrological information collection system of upper fan surrounding waters, the aeroacoustics acquisition system being arranged on offshore wind turbine foundation or pylon System, meteorological information collection system, hydrological information collection system and aeroacoustics acquisition system real-time data transmission collected are extremely Acquisition node, then wireless terminal transmission is passed through to data center on the bank by acquisition node, data center, monitoring system and monitoring are set Pass through Industrial Ethernet connection communication between standby.
In the present embodiment, the quantity of offshore wind turbine is two or more, and every Taiwan Straits upper fan is equipped with meteorological information acquisition System, hydrological information collection system, aeroacoustics acquisition system, acquisition node and wireless terminal, so that data center can on the bank To obtain the data of each Taiwan Straits upper fan, so that it is every so that monitoring system is read marine wind electric field at any time by data center The every terms of information of Taiwan Straits upper fan.The meteorological information collection system includes temperature sensor, humidity sensor, wind sensing Device, precipitation rain fall sensor and lightning sensors.The hydrological information collection system includes Wave Sensor, ocean current sensor and tide Nighttide sensor.The aeroacoustics acquisition system includes acoustic sensor and acoustics signal processing unit, acoustic sensor Measurement range is 20Hz -20kHz, and the sample frequency of acoustics signal processing unit digital analog converter is not less than 200kHz, acquires position Number is not less than 16, and for the accuracy for guaranteeing acquisition acoustic signal, acquisition channel is no less than 4 channels.Wireless terminal utilizes microwave The mode of communication sends data to data center on the bank.The monitoring device includes that central control room's computer monitoring is flat Platform, remote computer and handheld device, wherein handheld device is intelligent mobile phone equipment, and various monitoring devices are able to achieve blower The functions such as blade state data check, malfunction monitoring and alert process.
As shown in Fig. 2, the present embodiment also discloses a kind of contactless monitoring method of offshore wind turbine blade fault, in use The monitoring system stated, includes the following steps:
(1) weather information is acquired by meteorological information collection system, correction wind is made an uproar, the noise of extreme storm, thunder, the patter of rain is dry It disturbs;By hydrological information collection system acquisition hydrographic information, the noise jamming of marine wave, stream, tide is corrected;It is adopted by aeroacoustics Collecting system acquires the aeroacoustics information of fan blade, specifically, aeroacoustics acquisition system is by signal in the present embodiment Variation mode decomposition is carried out, by comparing relevance and subband time-frequency characteristic with fan blade swing circle, removes ocean The subband of environmental background noise interference, obtains pure fan blade aeroacoustics information;Collection process is controlled by acquisition node And acquisition data are passed through into wireless terminal transmission to data center on the bank;
(2) the aeroacoustics information of weather information, hydrographic information and fan blade is subjected to the fusion of decision level information, corrects ring Interference of the border noise to aeroacoustics information collection, the multiple dimensioned sample by computational aeroacoustics information based on variation mode decomposition This entropy, i.e., the Sample Entropy of extraction time sequence on different scale, not only can metric signal on the whole complexity, but also can be with The minutia that signal profound level is excavated from different scale, the state set of eigenvectors of fan blade, blower leaf are constructed with this When piece breaks down, the time-frequency characteristics of aeroacoustics information will change therewith, be analyzed by time frequency analyzing tool and extract structure The multiple dimensioned Sample Entropy set of eigenvectors established with test sample is input to nerve net by the time-frequency characteristics for building aeroacoustics information Learnt in network and trained, constantly update network weight and structure, final convergence obtains fan blade fault identification and classification Neural network model;
(3) neural network model is downloaded in monitoring system, monitoring system-computed newly collects aeroacoustics information Time-frequency characteristics are input in the neural network model and are identified and classified, while the neural network model can be according to new spy Levy timely update weight and neural network structure, the generalization ability of strength neural network;
(4) state and fault message of each Taiwan Straits upper fan blade are provided in real time by monitoring system, in the event of a failure to monitoring Equipment alert, at the same in monitoring device can with the state of each Taiwan Straits upper fan blade of real time inspection, and therefore Barrier is handled it when occurring.
In the present embodiment, aeroacoustics acquisition system is removed according to the time-frequency characteristic of signal using adaptive filter method The interference of marine environment ambient noise, obtains pure fan blade aeroacoustics information.

Claims (9)

1. a kind of contactless monitoring system of offshore wind turbine blade fault, it is characterised in that: the system includes being arranged in sea Meteorological information collection system on upper fan basis, column foot or independent platform is arranged in the hydrology letter of offshore wind turbine surrounding waters Cease acquisition system, the aeroacoustics acquisition system being arranged on offshore wind turbine foundation or pylon, meteorological information collection system, the hydrology Information acquisition system and aeroacoustics acquisition system real-time data transmission collected pass through to acquisition node, then by acquisition node Wireless terminal transmission to data center on the bank, data center monitors and is connected between system and monitoring device by Industrial Ethernet Communication.
2. the contactless monitoring system of offshore wind turbine blade fault according to claim 1, it is characterised in that: offshore wind turbine Quantity be two or more, every Taiwan Straits upper fan is equipped with meteorological information collection system, hydrological information collection system, aeroacoustics Acquisition system, acquisition node and wireless terminal.
3. the contactless monitoring system of offshore wind turbine blade fault according to claim 1, it is characterised in that: the gas Image information acquisition system includes temperature sensor, humidity sensor, wind sensor, precipitation rain fall sensor and lightning sensors.
4. the contactless monitoring system of offshore wind turbine blade fault according to claim 1, it is characterised in that: the water Literary information acquisition system includes Wave Sensor, ocean current sensor and tide sensor.
5. the contactless monitoring system of offshore wind turbine blade fault according to claim 1, it is characterised in that: the gas Dynamic acoustics acquisition system includes acoustic sensor and acoustics signal processing unit, and the measurement range of acoustic sensor is 20Hz- 20kHz, the sample frequency of acoustics signal processing unit digital analog converter are not less than 200kHz, and acquisition digit is not less than 16, adopts Collection channel is no less than 4 channels.
6. the contactless monitoring system of offshore wind turbine blade fault according to claim 1, it is characterised in that: wireless terminal Data center on the bank is sent data in the way of microwave communication.
7. the contactless monitoring system of offshore wind turbine blade fault according to claim 1, it is characterised in that: the prison Controlling equipment includes central control room's computer monitoring platform, remote computer and handheld device.
8. a kind of contactless monitoring method of offshore wind turbine blade fault, uses monitoring system described in claim 1, feature It is, includes the following steps:
(1) weather information is acquired by meteorological information collection system, correction wind is made an uproar, the noise of extreme storm, thunder, the patter of rain is dry It disturbs;By hydrological information collection system acquisition hydrographic information, the noise jamming of marine wave, stream, tide is corrected;It is adopted by aeroacoustics The aeroacoustics information of collecting system acquisition fan blade;Collection process is controlled by acquisition node and is passed through acquisition data wirelessly eventually End is transmitted to data center on the bank;
(2) the aeroacoustics information of weather information, hydrographic information and fan blade is subjected to the fusion of decision level information, corrects ring Interference of the border noise to aeroacoustics information collection, the multiple dimensioned sample by computational aeroacoustics information based on variation mode decomposition This entropy, i.e., the Sample Entropy of extraction time sequence on different scale are constructed the state set of eigenvectors of fan blade with this, passed through The time-frequency characteristics of building aeroacoustics information, the multiple dimensioned Sample Entropy that will be established with test sample are extracted in time frequency analyzing tool analysis Set of eigenvectors, which is input in neural network, to be learnt and is trained, and network weight and structure are constantly updated, and final convergence obtains The neural network model of fan blade fault identification and classification;
(3) neural network model is downloaded in monitoring system, monitoring system-computed newly collects aeroacoustics information Time-frequency characteristics are input in the neural network model and are identified and classified, while the neural network model can be according to new spy Levy timely update weight and neural network structure, the generalization ability of strength neural network;
(4) state and fault message of each Taiwan Straits upper fan blade are provided in real time by monitoring system, in the event of a failure to monitoring Equipment alert, at the same in monitoring device can with the state of each Taiwan Straits upper fan blade of real time inspection, and therefore Barrier is handled it when occurring.
9. the contactless monitoring method of offshore wind turbine blade fault according to claim 8, it is characterised in that: aeroacoustics Acquisition system is interfered according to the time-frequency characteristic of signal using adaptive filter method removal marine environment ambient noise, is obtained pure Fan blade aeroacoustics information.
CN201910081150.2A 2019-01-28 2019-01-28 Non-contact monitoring system and monitoring method for blade faults of offshore wind turbine Expired - Fee Related CN109763944B (en)

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Cited By (11)

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CN111555437A (en) * 2020-05-15 2020-08-18 中国船舶工业系统工程研究院 Underwater data center powered by offshore wind power
CN111596647A (en) * 2020-06-01 2020-08-28 国电联合动力技术有限公司 Efficient and intelligent test system and method for wind turbine generator
CN111967486A (en) * 2020-06-02 2020-11-20 安徽三禾一信息科技有限公司 Complex equipment fault diagnosis method based on multi-sensor fusion
CN112067701A (en) * 2020-09-07 2020-12-11 国电电力新疆新能源开发有限公司 Fan blade remote auscultation method based on acoustic diagnosis
CN112539142A (en) * 2020-11-12 2021-03-23 中国电建集团华东勘测设计研究院有限公司 Analysis and identification method for noise of monitoring data of offshore wind power structure state
CN112727707A (en) * 2021-01-08 2021-04-30 国家电投集团东北电力有限公司 Wind driven generator blade monitoring system and method based on wireless attitude sensor
CN113154642A (en) * 2021-02-22 2021-07-23 河北建投海上风电有限公司 Dehumidifier control system for offshore wind turbine
TWI742959B (en) * 2020-12-09 2021-10-11 國立臺灣大學 Detection equipment, detection system and wind turbine assembly
CN113623144A (en) * 2021-09-01 2021-11-09 五凌电力有限公司 Blade state monitoring system based on acoustic algorithm and monitoring method thereof
CN114000989A (en) * 2021-11-30 2022-02-01 中国华能集团清洁能源技术研究院有限公司 Method and system for detecting aerodynamic performance attenuation of blades of wind generating set
CN114738205A (en) * 2022-04-28 2022-07-12 北京千尧新能源科技开发有限公司 Method, device, equipment and medium for monitoring state of floating fan foundation

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CN113623144A (en) * 2021-09-01 2021-11-09 五凌电力有限公司 Blade state monitoring system based on acoustic algorithm and monitoring method thereof
CN114000989A (en) * 2021-11-30 2022-02-01 中国华能集团清洁能源技术研究院有限公司 Method and system for detecting aerodynamic performance attenuation of blades of wind generating set
CN114738205A (en) * 2022-04-28 2022-07-12 北京千尧新能源科技开发有限公司 Method, device, equipment and medium for monitoring state of floating fan foundation

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