CN104989594A - Wind generating set vibration waveform collection system and method - Google Patents
Wind generating set vibration waveform collection system and method Download PDFInfo
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Abstract
本发明公开了一种风力发电机组振动波形采集系统及方法,包括:振动传感器模块,在风力发电机中不同位置安装独立的振动传感器,振动传感器模块的振动传感器根据叶片的运行情况变送输出模拟信号,并将该模拟信号进行数字化,将数字化后的信号传送至PLC模块;PLC模块,对获得的数字化信号进行逻辑控制处理,并将处理结果传送至无线传送模块;无线传送模块,将该PLC模块的处理结果通过无线网络传输至过程控制站,本发明通过在运行过程中对叶片振动波形进行采集,为之后分析振动波形判断故障做基础,实现了风力发电机组振动波形的无线采集。
The invention discloses a vibration waveform acquisition system and method of a wind power generating set, comprising: a vibration sensor module, independent vibration sensors are installed at different positions in the wind power generator, and the vibration sensor of the vibration sensor module transmits and outputs simulation signals according to the operating conditions of the blades signal, and digitize the analog signal, and transmit the digitized signal to the PLC module; the PLC module performs logic control processing on the obtained digital signal, and transmits the processing result to the wireless transmission module; the wireless transmission module, the PLC The processing result of the module is transmitted to the process control station through the wireless network. The invention collects the vibration waveform of the blade during the operation process, which is the basis for analyzing the vibration waveform to judge the fault later, and realizes the wireless collection of the vibration waveform of the wind power generating set.
Description
技术领域technical field
本发明涉及风力发电机组振动波形采集技术领域,特别是涉及一种风力发电机组振动波形采集系统及方法。The invention relates to the technical field of acquisition of vibration waveforms of wind power generators, in particular to a system and method for acquiring vibration waveforms of wind power generators.
背景技术Background technique
目前关于风力发电机组监测技术的发明有很多,综合其思路,有如下几种:At present, there are many inventions on the monitoring technology of wind turbines. Based on their ideas, they are as follows:
①利用粗糙集的数据挖掘方法实现的风力发电机组监测技术。如已经申请的专利《风力发电机振动监测的方法和系统》,该发明基于大量的历史数据,通过基于粗糙集的数据挖掘方法,建立振动特征值范围规则库,其次,根据该规则库中提取的规则,由风力发电机的实时运行数据预测振动特征值范围,并计算振动特征值的阈值,最后,比较风力发电机运行特征的实时数据和上述振动特征值阈值,做出故障报警判断。①Wind turbine monitoring technology realized by using rough set data mining method. For example, the patent "Method and System for Wind Turbine Vibration Monitoring" that has been applied for, the invention is based on a large amount of historical data, and through a data mining method based on rough sets, a rule base of vibration characteristic value ranges is established. Secondly, according to the rule base extracted According to the rules, the range of vibration characteristic values is predicted from the real-time operating data of the wind turbine, and the threshold value of the vibration characteristic value is calculated. Finally, the real-time data of the operating characteristics of the wind turbine and the above-mentioned vibration characteristic value threshold are compared to make a fault alarm judgment.
②利用位置测量系统实现的风力发电机组监测技术。如已申请的专利《风力发电机状态监测方法》,该发明利用位置信息,预先生成风力发电机的传动链的正常运行的参考曲线;实测位置信息,生成状态监测曲线;将所述状态监测曲线与预先生成的参考曲线进行比较,确定风力发电机的当前状态。通过本发明的监测方法,能够实现少量甚至不需要硬件投资,同时不需要AD模块,达到高信噪比的监测;并且大大降低计算量,使得监测系统更易于整合入主控制系统。②Wind turbine monitoring technology realized by position measurement system. For example, the patent "Wind Power Generator State Monitoring Method" that has been applied for, the invention uses position information to pre-generate a reference curve for the normal operation of the transmission chain of the wind power generator; measure the position information to generate a state monitoring curve; The current status of the wind turbine is determined by comparison with a pre-generated reference curve. Through the monitoring method of the present invention, little or no hardware investment can be realized, and no AD module is required to achieve monitoring with a high signal-to-noise ratio; and the calculation amount is greatly reduced, making the monitoring system easier to integrate into the main control system.
③利用阈值控制和数据融合方法实现的风力发电机组监测技术,即通过短信控制家庭中的电器,如已申请的专利《风力发电机组健康状态在线监测装置及其监测方法》,该发明监测装置包括信号采集模块、信号预处理模块、数据融合模块和健康状态信息输出模块。首先采集风电机组各部件信号,对采集到的信号进行预处理,以及对相关数据进行数据融合处理,提取数据征兆信息;在推理机作用下,将数据信息与专家库中的数据信息匹配,做出健康状态诊断决策,提供给用户;根据所述的报警信息或健康状态诊断决策信息做出相应的动作。③Wind turbine monitoring technology realized by using threshold control and data fusion method, that is, controlling electrical appliances in the home through SMS, such as the patent "on-line monitoring device and monitoring method for wind turbine health status" that has been applied for. The monitoring device of this invention includes Signal acquisition module, signal preprocessing module, data fusion module and health status information output module. First, collect the signals of each component of the wind turbine, preprocess the collected signals, and perform data fusion processing on related data to extract data symptom information; under the action of the inference engine, match the data information with the data information in the expert database to make Make a health status diagnosis decision and provide it to the user; take corresponding actions according to the alarm information or health status diagnosis decision information.
以上三类解决方案,各自存在一些不足:第①种方法,利用粗糙集的数据挖掘方法,通过历史数据,建立的振动特征值范围规则库,需要极大量的数据作为基础,否则不能保证对风电机组准确的检测判断;容易造成误报警;第②种方法利用位置测量系统实现的,实测位置信息,生成状态监测曲线,将实测曲线与预先生成的参考曲线进行比较,这种方法虽然工作量小,设备便宜,但是计算错误的可能性较高;第③思路利用阈值控制和数据融合方法,采用多种传感器采集风力发电机组健康状态信息,提前判断可能发生故障的部件,但是这种方法下数据监测可能存在不准确因素。The above three types of solutions each have some deficiencies: The first method uses the rough set data mining method to establish the vibration characteristic value range rule base through historical data. Accurate detection and judgment of the unit; it is easy to cause false alarms; the second method is realized by using the position measurement system, the actual position information is measured, the state monitoring curve is generated, and the actual measured curve is compared with the pre-generated reference curve. Although this method has a small workload , the equipment is cheap, but the possibility of calculation errors is high; the third idea uses threshold control and data fusion methods, uses a variety of sensors to collect health status information of wind turbines, and judges possible faulty components in advance. There may be inaccuracies in monitoring.
综合以上的三种方法,第一种需要在有极大数据的前提下才能够保证一定的检测准确度,第二种和第三种方法,都存在数据对比可能存在的不准确性。Combining the above three methods, the first one needs to have a certain amount of data to ensure a certain detection accuracy, and the second and third methods both have possible inaccuracies in data comparison.
发明内容Contents of the invention
为克服上述现有技术存在的不足,本发明之目的在于提供一种风力发电机组振动波形采集系统及方法,其通过在运行过程中对叶片振动波形进行采集,为之后分析振动波形判断故障做基础,实现风力发电机组振动波形的无线采集。In order to overcome the deficiencies in the above-mentioned prior art, the object of the present invention is to provide a vibration waveform acquisition system and method of a wind power generating set, which collects the vibration waveform of the blade during operation, and lays the foundation for subsequent analysis of the vibration waveform to determine faults , to realize the wireless acquisition of the vibration waveform of the wind turbine.
为达上述及其它目的,本发明提出一种风力发电机组振动波形采集系统,包括:In order to achieve the above and other purposes, the present invention proposes a vibration waveform acquisition system for wind power generators, including:
振动传感器模块,在风力发电机中不同位置安装独立的振动传感器,振动传感器模块的振动传感器根据叶片的运行情况变送输出模拟信号,并将该模拟信号进行数字化,将数字化后的信号传送至PLC模块;The vibration sensor module installs independent vibration sensors at different positions in the wind turbine. The vibration sensor of the vibration sensor module transmits and outputs analog signals according to the operating conditions of the blades, digitizes the analog signals, and transmits the digitized signals to the PLC. module;
PLC模块,对获得的数字化信号进行逻辑控制处理,并将处理结果传送至无线传送模块;The PLC module performs logic control processing on the obtained digital signal, and transmits the processing result to the wireless transmission module;
无线传送模块,将该PLC模块的处理结果通过无线网络传输至过程控制站。The wireless transmission module transmits the processing results of the PLC module to the process control station through the wireless network.
进一步地,所述振动传感器模块安装在该风力发电机的叶片根部。Further, the vibration sensor module is installed at the blade root of the wind power generator.
进一步地,所述振动传感器模块包括多个振动传感器以及信号处理模块,各振动传感器设置于风力发电机各叶片的根部,各振动传感器根据叶片的运行情况变送输出模拟信号至所述信号处理模块,所述信号处理模块将采集到的模拟信号进行数字化,并将数字化后的信好传送至所述PCL模块。Further, the vibration sensor module includes a plurality of vibration sensors and a signal processing module, each vibration sensor is arranged at the root of each blade of the wind power generator, and each vibration sensor transmits and outputs an analog signal to the signal processing module according to the operating conditions of the blades , the signal processing module digitizes the collected analog signal, and transmits the digitized signal to the PCL module.
进一步地,所述振动传感器根据叶片的运行情况变送输出4-20毫安模拟信号。Further, the vibration sensor transmits and outputs an analog signal of 4-20 mA according to the operation condition of the blade.
进一步地,所述PLC模块安装于机舱中。Further, the PLC module is installed in the engine room.
进一步地,所述无线传送模块为GSM收发模块。Further, the wireless transmission module is a GSM transceiver module.
为达到上述目的,本发明还提供一种风力发电机组振动波形采集方法,包括如下步骤:In order to achieve the above object, the present invention also provides a method for collecting vibration waveforms of wind power generators, comprising the following steps:
步骤一,利用设置于风力发电机不同位置的振动传感器根据叶片的运行情况变送输出模拟信号,并将该模拟信号进行数字化后传送至PLC模块;Step 1: Utilize the vibration sensors installed at different positions of the wind turbine to transmit and output analog signals according to the operating conditions of the blades, and digitize the analog signals and transmit them to the PLC module;
步骤二,PLC模块对获得的数字信号进行逻辑控制处理,并将处理结果传送至无线传送模块;Step 2, the PLC module performs logic control processing on the obtained digital signal, and transmits the processing result to the wireless transmission module;
步骤三,该无线传送模块将PLC模块的处理结果通过无线网络传输至过程控制站。Step 3, the wireless transmission module transmits the processing result of the PLC module to the process control station through the wireless network.
进一步地,各振动传感器设置于风力发电机各叶片的根部。Further, each vibration sensor is arranged at the root of each blade of the wind power generator.
进一步地,所述PLC模块安装于机舱中。Further, the PLC module is installed in the engine room.
进一步地,各振动传感器根据叶片的运行情况变送输出4-20毫安模拟信号。Further, each vibration sensor transmits and outputs an analog signal of 4-20 mA according to the operation condition of the blade.
与现有技术相比,本发明一种风力发电机组振动波形采集系统及方法其通过将振动传感器安装在叶片根部,在运行过程中对叶片振动波形进行采集,为之后分析振动波形判断故障做基础,实现了风力发电机组振动波形的无线采集。Compared with the prior art, a vibration waveform acquisition system and method of a wind power generating set in the present invention installs the vibration sensor on the root of the blade, collects the vibration waveform of the blade during operation, and lays the foundation for the subsequent analysis of the vibration waveform to determine the fault , to realize the wireless acquisition of the vibration waveform of the wind power generating set.
附图说明Description of drawings
图1为本发明一种风力发电机组振动波形采集系统的系统架构图;Fig. 1 is a system architecture diagram of a wind turbine vibration waveform acquisition system of the present invention;
图2为本发明较佳实施例中振动传感器模块10的细部结构图;Fig. 2 is a detailed structural diagram of the vibration sensor module 10 in a preferred embodiment of the present invention;
图3为本发明较佳实施例中风电机组各模块的设置示意图;Fig. 3 is a schematic diagram of the arrangement of each module of the wind turbine in a preferred embodiment of the present invention;
图4为本发明一种风力发电机组振动波形采集方法的步骤流程图。Fig. 4 is a flow chart of steps of a method for collecting vibration waveforms of a wind power generating set according to the present invention.
具体实施方式Detailed ways
以下通过特定的具体实例并结合附图说明本发明的实施方式,本领域技术人员可由本说明书所揭示的内容轻易地了解本发明的其它优点与功效。本发明亦可通过其它不同的具体实例加以施行或应用,本说明书中的各项细节亦可基于不同观点与应用,在不背离本发明的精神下进行各种修饰与变更。The implementation of the present invention is described below through specific examples and in conjunction with the accompanying drawings, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific examples, and various modifications and changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.
图1为本发明一种风力发电机组振动波形采集系统的系统架构图。如图1所示,本发明一种风力发电机组振动波形采集系统,包括:振动传感器模块10、PLC模块20以及无线传送模块30。Fig. 1 is a system architecture diagram of a vibration waveform acquisition system of a wind power generating set according to the present invention. As shown in FIG. 1 , a vibration waveform acquisition system of a wind power generating set in the present invention includes: a vibration sensor module 10 , a PLC module 20 and a wireless transmission module 30 .
其中,振动传感器模块10在风电机中不同位置(在本发明较佳实施例中为每个叶片根部)安装独立的振动传感器,振动传感器模块10的振动传感器根据叶片的运行情况变送输出4-20毫安模拟信号,并将该模拟信号进行数字化,将数字化后的信号传送至PLC20;PLC(可编程逻辑控制)模块20,安装在机舱中,对获得的数字化信号进行逻辑控制处理,并将处理结果传送至无线传送模块30;无线传送模块30将PLC模块20的处理结果通过无线网络传输至过程控制站,从而建立分布式控制系统DCS以完成对风电机组振动波形的采集,过程控制站对接收的风电机组振动波形进行测算即可得到风电机组运行状态,在本发明较佳实施例中,无线传送模块30为GSM收发模块,其通过GSM网络将PLC模块20的处理结果传输至过程控制站。Wherein, the vibration sensor module 10 installs independent vibration sensors in different positions (in the preferred embodiment of the present invention, each blade root) in the wind generator, and the vibration sensor of the vibration sensor module 10 transmits output 4- 20 mA analog signal, and the analog signal is digitized, and the digitized signal is transmitted to PLC20; PLC (programmable logic control) module 20 is installed in the engine room, and the obtained digitized signal is carried out logic control processing, and The processing result is transmitted to the wireless transmission module 30; the wireless transmission module 30 transmits the processing result of the PLC module 20 to the process control station through the wireless network, thereby establishing a distributed control system DCS to complete the acquisition of the wind turbine vibration waveform, and the process control station is to the process control station. The received wind turbine vibration waveform can be measured and calculated to obtain the wind turbine operating status. In a preferred embodiment of the present invention, the wireless transmission module 30 is a GSM transceiver module, which transmits the processing results of the PLC module 20 to the process control station through the GSM network .
图2为本发明较佳实施例中振动传感器模块10的细部结构图。在本发明较佳实施例中,振动传感器模块10包括多个振动传感器101以及信号处理模块102,振动传感器101设置于风电机各叶片的根部,各振动传感器101根据叶片的运行情况变送输出4-20毫安模拟信号至信号处理模块102,信号处理模块102将采集到的模拟信号进行数字化,并将数字化后的信好传送至PCL模块20。FIG. 2 is a detailed structure diagram of the vibration sensor module 10 in a preferred embodiment of the present invention. In a preferred embodiment of the present invention, the vibration sensor module 10 includes a plurality of vibration sensors 101 and a signal processing module 102, the vibration sensors 101 are arranged at the root of each blade of the wind turbine, and each vibration sensor 101 transmits an output 4 according to the operating conditions of the blades. The −20 mA analog signal is sent to the signal processing module 102 , the signal processing module 102 digitizes the collected analog signal, and transmits the digitized signal to the PCL module 20 .
图3为本发明较佳实施例中风电机组各模块的设置示意图。在本发明较佳实施例中,振动传感器模块10安装在各叶片根部,可编程逻辑控制器PLC模块20安装在机舱中,并通过GSM收发模块进行收发通信。Fig. 3 is a schematic diagram of the arrangement of each module of the wind turbine in a preferred embodiment of the present invention. In a preferred embodiment of the present invention, the vibration sensor module 10 is installed at the root of each blade, and the programmable logic controller PLC module 20 is installed in the nacelle, and transmits and receives communication through the GSM transceiver module.
图4为本发明一种风力发电机组振动波形采集方法的步骤流程图。如图4所示,本发明一种风力发电机组振动波形采集方法,包括如下步骤:Fig. 4 is a flow chart of steps of a method for collecting vibration waveforms of a wind power generating set according to the present invention. As shown in Figure 4, a method for collecting vibration waveforms of wind power generators in the present invention comprises the following steps:
步骤401,利用设置于风电机各叶片根部的振动传感器根据叶片的运行情况变送输出4-20毫安模拟信号,并将该模拟信号进行数字化后传送至PLC模块;Step 401, using the vibration sensor installed at the root of each blade of the wind turbine to transmit and output a 4-20 mA analog signal according to the operating condition of the blade, and digitize the analog signal and transmit it to the PLC module;
步骤402,PLC模块对获得的数字信号进行逻辑控制处理,并将处理结果传送至无线传送模块;Step 402, the PLC module performs logic control processing on the obtained digital signal, and transmits the processing result to the wireless transmission module;
步骤403,无线传送模块将PLC模块的处理结果通过无线网络传输至过程控制站。在本发明较佳实施例中,无线传送模块为GSM收发模块。Step 403, the wireless transmission module transmits the processing result of the PLC module to the process control station through the wireless network. In a preferred embodiment of the present invention, the wireless transmission module is a GSM transceiver module.
综上所述,本发明一种风力发电机组振动波形采集系统及方法其通过将振动传感器安装在叶片根部,在运行过程中对叶片振动波形进行采集,为之后分析振动波形判断故障做基础,实现了风力发电机组振动波形的无线采集。To sum up, a vibration waveform acquisition system and method of a wind power generating set in the present invention installs the vibration sensor on the root of the blade, collects the vibration waveform of the blade during operation, and lays the foundation for subsequent analysis of the vibration waveform to determine the fault, and realizes Wireless collection of vibration waveforms of wind turbines.
与现有技术相比,本发明具有如下优点:Compared with prior art, the present invention has following advantage:
(1)本发明建立的DCS(分布式控制)系统具有实时性、可靠性和扩充性的特性,可以保证从风电机组上获取的振动波形传输的实时与精确。(1) The DCS (distributed control) system established by the present invention has the characteristics of real-time, reliability and expandability, and can ensure real-time and accurate transmission of vibration waveforms obtained from wind turbines.
(2)本发明不需要对风力发电机组结构进行大改动,能够快速布置,有效、实时监测风力发电机组振动波形的变化,具有很好的可维护性和拓展性。(2) The present invention does not need to make major changes to the structure of the wind generating set, can be quickly arranged, effectively and real-time monitors the change of the vibration waveform of the wind generating set, and has good maintainability and expandability.
(3)由于风力机叶片特殊的工作方式,传统的应变片测振方式无法安装在叶片上,本发明设计了一套低功耗的无线振动采集系统(在边远地区相较于其他无线通信技术使用GSM功耗可以降低),可以把振动传感器模块安装在叶片根部。(3) Due to the special working mode of wind turbine blades, the traditional strain gauge vibration measurement method cannot be installed on the blades. The present invention designs a set of low-power wireless vibration acquisition system (compared with other wireless communication technologies in remote areas Using GSM power consumption can be reduced), and the vibration sensor module can be installed at the root of the blade.
上述实施例仅例示性说明本发明的原理及其功效,而非用于限制本发明。任何本领域技术人员均可在不违背本发明的精神及范畴下,对上述实施例进行修饰与改变。因此,本发明的权利保护范围,应如权利要求书所列。The above-mentioned embodiments only illustrate the principles and effects of the present invention, but are not intended to limit the present invention. Any person skilled in the art can modify and change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be listed in the claims.
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