CN103543253A - Networking communication method of on-line wind turbine generator gearbox oil liquid monitoring system - Google Patents
Networking communication method of on-line wind turbine generator gearbox oil liquid monitoring system Download PDFInfo
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Abstract
The invention belongs to an oil liquid monitoring technology based on an embedded hardware platform and relates to a networking communication method of an on-line wind turbine generator gearbox oil liquid monitoring system. Remote real-time monitoring on water and metal particles in oil liquid of a wind turbine generator gearbox and a viscosity state of the oil liquid can be implemented. Each fan acquires relevant oil liquid quality data through a water sensor, a viscosity sensor and a metal particle sensor of a data acquisition unit of the on-line gearbox oil liquid monitoring system and transmits the data to a Zigbee wireless communication module in a wireless communication unit after the data is processed by a central processing unit. All sub fans route the data into a Zigbee wireless communication module of a main fan in a Zigbee networking mode of a mesh-based topological structure, and finally, the main fan packs all the data in a concentrative manner and remotely sends the data to a server terminal through a GPRS (general packet radio service) wireless communication module. The networking communication method can provide a high-reliability and low-cost effective monitoring measure to a wind turbine generator in a wind power plant, and due to the effective monitoring measure, faults can be found in time.
Description
Technical field
The invention belongs to monitoring technical field, relate to the online monitoring system networking communication method of a kind of gearbox of wind turbine fluid.
Background technology
Wind-powered electricity generation is rapid as Renewable Energy Development, and blower fan quantity sharply increases.Gear case is as the critical piece of wind-powered electricity generation unit, and it involves great expense, complex structure, because gearbox fault causes the expense of fan parking, maintenance and power generation loss very high, has a strong impact on the economic benefit of wind-power electricity generation.
Oil Quality is to affect the gearbox of wind turbine greatest factor in serviceable life.The tired particle detachment that occurs of direct geared mechanical friction or metal material is the main cause that produces gear case wearing and tearing, and the degree of wear of wear metal particle meeting accelerating gear in lubricating oil; The too low meeting of oil viscosity cause oil film thin, easily break, cause that the flank of tooth directly contacts, weares and teares violent, and viscosity is crossed conference and is caused greasing oil temperature to raise, and produces resistance, causes power waste; In fluid, contained humidity can make oil dope loss, lubricating ability variation, accelerates the corrosive attack of organic acid to gear.
The off-line type gearbox of wind turbine oil liquid monitoring technology that adopt of industry at present, its disturbing factor is many, man's activity is large, can not meet the requirement of real-time that field apparatus detects and safeguards more.The online gearbox of wind turbine oil liquid monitoring of part mostly judges gear and bearing working state by spectrum analysis and feature extraction, analyzing failure cause, but these class methods can only could be diagnosed out result when fault occurs, the inevitable occurrence tendency of fault, and monitoring target is single.
Wind-powered electricity generation unit is generally located at 50～80m or above high-altitude, has relative work under bad environment, the factors such as poor transport, and it is further difficult that the discovery of fault, reparation become.The online monitoring data that generally can reflect gearbox of wind turbine situation is mostly transmitted by wiring, and along with the develop rapidly of the communications industry, GPRS wireless transmission method also part has replaced traditional wiring mode in recent years.Yet mobile communications network is mainly to set up for voice communication, a SIM card can only outwards send the oil liquid monitoring data of a gearbox of wind turbine, by GPRS every typhoon group of motors of communicating by letter, all can produce corresponding monthly rent or daily rental rate, for up to a hundred thousands of typhoon group of motors of wind energy turbine set, this will spend no small number undoubtedly.Meanwhile, the relatively power consumption of GPRS wireless communication mode, common No. 5 batteries of two joints can only continued power approximately 1～7 day.
Summary of the invention
The object of the invention is to propose that a kind of reliability is high, cost is low, the fault discovery online monitoring system networking communication method of gearbox of wind turbine fluid timely.
Technical solution of the present invention is: in the online monitoring system of each gearbox of wind turbine fluid, be equipped with central processor unit, radio communication unit, power supply unit and data acquisition unit.Radio communication unit in the online monitoring system of gearbox of wind turbine fluid comprises being installed on a main air blower of Zigbee wireless communication module and GPRS wireless communication module, and its Zigbee wireless communication module is as Zigbee network telegon; Radio communication unit in the online monitoring system of other gearbox of wind turbine fluid only comprises on the sub-blower fan of being installed to of Zigbee wireless communication module:
Data acquisition unit in the online monitoring system of each gearbox of wind turbine fluid detects image data by front end sensors, is transferred to central processor unit and carries out data processing, then be transferred to the Zigbee wireless communication module in radio communication unit.The Zigbee wireless communication module of the online monitoring system of each gearbox of wind turbine fluid adopts the webbed Zigbee networking mode of Zigbee wireless communication module structure of full-function device and the online monitoring system of all gearbox of wind turbine fluid.The online monitoring system of gearbox of wind turbine fluid being arranged on sub-blower fan is routed in the Zigbee wireless communication module of the online monitoring system of gearbox of wind turbine fluid being arranged on main air blower by the sub-blower fan fluid data that gather by Zigbee wireless communication module, the fluid data that the sub-blower fan fluid data that the online monitoring system of gearbox of wind turbine fluid of main air blower is carried out all receptions again detect together with self gather packing, and pass through its GPRS wireless communication module by data overall budget teletransmission, send to remote server terminal.
Described data acquisition unit comprises moisture transducer, viscosity sensor and metallic particles sensor.
The advantage that the present invention has and beneficial effect,
The present invention can obtain by the front end data acquisition unit Real-time Collection of the online monitoring system of gearbox of wind turbine fluid moisture, metallic particles and the oil viscosity data in gearbox of wind turbine fluid, through central processor unit, carries out data processing and is transferred in the Zigbee wireless communication module of radio communication unit.Then by its Zigbee wireless communication module, the mode with netted networking is routed to each sub-blower fan fluid data that collect in the Zigbee wireless communication module of main air blower all sub-blower fans again.The application of Zigbee wireless communication networks can realize in the mode of " multistage jumping " and communicating by letter, in whole network, add, delete the Zigbee wireless communication node of the online monitoring system of any one gearbox of wind turbine fluid, or its Zigbee wireless communication node position change, break down, each network node of described Zigbee networking communication modes is without manual intervention, the just existence of other nodes of energy perception, and establish annexation, adjust network structure, realize self-regeneration, form structured network.Therefore, the online monitoring system networking communication method of described gearbox of wind turbine fluid has networking flexibility, and self-organization, self-healing ability are strong, the feature that reliability is high.
Simultaneously, the Zigbee wireless communication networks that comprises a network coordinator can hold maximum 254 from equipment, in a region, can there are again maximum 100 ZigBee wireless communication networks simultaneously, an i.e. large wind field that has typhoon group of motors up to a hundred, can just can set up a huge Zigbee wireless communication networks by two to three main air blowers, illustrate that the described online monitoring system networking communication method of gearbox of wind turbine fluid has advantages of that network capacity is large.
In addition, the initial cost of Zigbee wireless communication module is very low, between each wind-powered electricity generation unit, by Zigbee wireless communication networks transmission data, do not need to consume extra rate, and communication power consumption is low, under standby mode, common No. 5 batteries of two joints can be used 6～24 months.The present invention adopts the gearbox of wind turbine oil liquid monitoring mode of Zigbee wireless networking communication, in conjunction with the feature of GPRS wireless telecommunications, greatly reduces the cost of wind-power electricity generation.
Finally, the fluid data that the sub-blower fan fluid data that the online monitoring system of gear case fluid of main air blower is carried out all receptions collect together with self gather packing, and pass through its GPRS wireless communication module data overall budget teletransmission, send to server terminal, the remote online monitoring of realization to the gearbox of wind turbine degree of wear and Oil Quality, solve the problem that current common monitoring method exists, increase substantially efficiency and security that gear case detects, and contribute to identify as early as possible the initial failure of wind-powered electricity generation unit, take condition based maintenance to improve the serviceable life of blower fan.
Described central processor unit moves control program programming in SRAM, can not only guarantee that in the situation of not power down, data do not disappear after depositing in, and can accelerate data reading speed, power saving, the real-time of raising system operation.
Accompanying drawing explanation
Fig. 1 is system architecture of the present invention unit figure;
Fig. 2 is that central processor unit node of the present invention connects block diagram;
Fig. 3 is the wireless telecommunications figure that Zigbee networking of the present invention is combined with GPRS.
Embodiment
The online monitoring system networking communication method of gearbox of wind turbine fluid of the present invention is characterized in that, in the online monitoring system of gearbox of wind turbine fluid, is equipped with central processor unit, radio communication unit, power supply unit and data acquisition unit.Central processor unit gathers by data acquisition unit moisture, metallic particles and the oil viscosity data that front end sensors detects, and by the Zigbee wireless communication module of radio communication unit and GPRS wireless communication module by packet teletransmission, realize the on-line monitoring of Oil Quality information.
Below in conjunction with accompanying drawing, technical solution of the present invention is described in further detail:
With reference to accompanying drawing 1, in the online monitoring system of gearbox of wind turbine fluid of the present invention, be equipped with central processor unit, radio communication unit, power supply unit and data acquisition unit.Wherein, data acquisition unit comprises moisture transducer, viscosity sensor and metallic particles sensor; radio communication unit comprises Zigbee wireless communication module and GPRS wireless communication module, and power supply unit comprises 24V power module, 5V power module and power source protective module.Data acquisition unit is connected with central processor unit by various expansion interfaces; central processor unit is connected with radio communication unit by expansion interface; power supply unit is central processor unit, data acquisition unit and radio communication unit power supply, and wherein power source protective module provides power protection for 24V power module and 5V power module.
With reference to accompanying drawing 2, it is the node connection layout of central processor unit of the present invention and expansion interface thereof in accompanying drawing 1.Central processing unit of the present invention is as the master controller of the described online monitoring system of gearbox of wind turbine fluid, be provided with moisture transducer interface, viscosity sensor interface, metallic particles sensor interface, wireless communication interface and power interface, comprise RTC clock, reset circuit, SRAM, JTAG and exterior storage simultaneously.
Moisture transducer output signal is 4～20mA current signal, by access precision resistance, current signal is converted into voltage signal, and described central processing unit is sampled and realized the collection to fluid contained humidity data by A/D; Viscosity sensor detects oil viscosity online according to ultrasonic wave principle, output digit signals, and described central processing unit is realized the collection to oil viscosity data by the mode of CAN bus; Metallic particles sensor detects metallic particles situation online according to electromagnetic induction principle, and described central processing unit is realized the collection of institute's containing metal particle data in fluid by serial ports.
Described central processing unit moves control program programming in SRAM, does not need refresh circuit just can preserve the data of its storage inside, can not only guarantee that in the situation of not power down, data do not disappear after depositing in, and power saving, can improve the operational efficiency of entire system.
Described central processing unit carries out storage backup by external SD card by the relevant Oil Quality data that collect, and prevents loss of data.
With reference to accompanying drawing 3, the main air blower that blower fan (1) is wind energy turbine set, the radio communication unit in the online monitoring system of its gear case fluid comprises Zigbee wireless communication module and GPRS wireless communication module; The sub-blower fan that blower fan (2) (3) (4) (5) (6) (7) is wind energy turbine set, the radio communication unit in the online monitoring system of its gear case fluid only comprises Zigbee wireless communication module.All its Zigbee wireless communication modules of blower fan that the online monitoring system of gearbox of wind turbine fluid is installed all adopt FFD, it can support any network structure, can converse with any other Zigbee wireless telecommunications system, the transmitted in both directions of information and monitoring are in real time provided.The Zigbee wireless communication module of the online monitoring system of gear case fluid of main air blower, as network coordinator, has advantages of that memory capacity is large, computing power is strong, and can manage other Zigbee network nodes.Whole networking network using fully connected topology, networking flexibility, self-organization, self-healing ability are strong.
The Zigbee wireless communication module of sub-blower fan (2) (3) (4) (5) (6) (7) by the online monitoring system of its gear case fluid by moisture, metallic particles and oil viscosity data in the fluid collecting by Zigbee network routing in the Zigbee wireless communication module of the online monitoring system of gear case fluid of main air blower (1).Under normal circumstances, the Oil Quality data of sub-blower fan (2) can be passed through (2) → (5) → (1), (2) → (3) → (4) → (1), and (2) → (6) → ... → (7) → (1) three paths are routed in main air blower (1); As fruit blower fan (5) breaks down or is removed, sub-blower fan (2) can not route data to main air blower (1) by path (2) → (5) → (1), but data transmission still can be walked around the blower fan (5) going wrong, by other two paths (2) → (3) → (4) → (1), (2) → (6) → ... → (7) → (1) routes data to main air blower (1).The sub-blower fan Oil Quality data that main air blower (1) carrys out all receptions again gather packing, by its GPRS wireless communication module, data overall budget teletransmission, send to server remote terminal.
The online monitoring system networking communication method of described gearbox of wind turbine fluid not only can be monitored the running status of gearbox of wind turbine in time, and stability and the reliability of data transmission between each blower fan of wind energy turbine set have been guaranteed and have increased substantially, meanwhile, effectively reduced cost of wind power generation.
Claims (2)
1. the online monitoring system networking communication method of gearbox of wind turbine fluid, is characterized in that, in the online monitoring system of each gearbox of wind turbine fluid, is equipped with central processor unit, radio communication unit, power supply unit and data acquisition unit.Radio communication unit in the online monitoring system of gearbox of wind turbine fluid comprises being installed on a main air blower of Zigbee wireless communication module and GPRS wireless communication module, and its Zigbee wireless communication module is as Zigbee network telegon; Radio communication unit in the online monitoring system of other gearbox of wind turbine fluid only comprises on the sub-blower fan of being installed to of Zigbee wireless communication module:
Data acquisition unit in the online monitoring system of each gearbox of wind turbine fluid detects image data by front end sensors, is transferred to central processor unit and carries out data processing, then be transferred to the Zigbee wireless communication module in radio communication unit.The Zigbee wireless communication module of the online monitoring system of each gearbox of wind turbine fluid adopts the webbed Zigbee networking mode of Zigbee wireless communication module structure of full-function device and the online monitoring system of all gearbox of wind turbine fluid.The online monitoring system of gearbox of wind turbine fluid being arranged on sub-blower fan is routed in the Zigbee wireless communication module of the online monitoring system of gearbox of wind turbine fluid being arranged on main air blower by the sub-blower fan fluid data that gather by Zigbee wireless communication module, the fluid data that the sub-blower fan fluid data that the online monitoring system of gearbox of wind turbine fluid of main air blower is carried out all receptions again detect together with self gather packing, and pass through its GPRS wireless communication module by data overall budget teletransmission, send to remote server terminal.
2. the online monitoring system networking communication method of a kind of gearbox of wind turbine fluid according to claim 1, is characterized in that, described data acquisition unit comprises moisture transducer, viscosity sensor and metallic particles sensor.
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Cited By (5)
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| CN105717281A (en) * | 2016-03-10 | 2016-06-29 | 宁波钢铁有限公司 | Oil online detection method |
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| CN109269801A (en) * | 2018-09-27 | 2019-01-25 | 中北大学 | A kind of gearbox fault monitoring device for wind-powered electricity generation |
| CN109580217A (en) * | 2018-09-27 | 2019-04-05 | 中北大学 | A kind of fault monitoring method of wind turbine gearbox |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106015541A (en) * | 2016-07-21 | 2016-10-12 | 中国电建集团贵阳勘测设计研究院有限公司 | Wind driven generator gearbox oil sample monitoring and filtering method and system |
| JP2018044538A (en) * | 2016-09-16 | 2018-03-22 | 株式会社日立製作所 | Wind power generator and wireless sensor network system |
| CN109269801A (en) * | 2018-09-27 | 2019-01-25 | 中北大学 | A kind of gearbox fault monitoring device for wind-powered electricity generation |
| CN109580217A (en) * | 2018-09-27 | 2019-04-05 | 中北大学 | A kind of fault monitoring method of wind turbine gearbox |
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Application publication date: 20140129 |