CN102619684B - Fault diagnosis method and system - Google Patents

Fault diagnosis method and system Download PDF

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CN102619684B
CN102619684B CN 201110034115 CN201110034115A CN102619684B CN 102619684 B CN102619684 B CN 102619684B CN 201110034115 CN201110034115 CN 201110034115 CN 201110034115 A CN201110034115 A CN 201110034115A CN 102619684 B CN102619684 B CN 102619684B
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fault
diagnosis
method
system
fault diagnosis
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CN 201110034115
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CN102619684A (en )
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陈卓
蔡旋
杨松
苏丽营
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华锐风电科技(集团)股份有限公司
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/72Wind turbines with rotation axis in wind direction
    • Y02E10/723Control of turbines

Abstract

本发明公开了一种故障诊断方法及系统,为了解决现有技术中设备频繁启停等问题而发明。 The present invention discloses a method and system for fault diagnosis, in order to solve the prior art problems such as equipment start and stop frequently invention. 本发明包括冗余测量数据的采集;冗余测量数据的处理和故障判断;故障程序的触发及再启动程序的运行;在故障判断中设限值和再启动滞环值。 The present invention comprises collecting measurement data redundancy; processing and fault tolerance of measured data is determined; triggers a fault and the program re-start the program running; restart set value and the hysteresis value of the failure determination. 上述的方法,风机在故障停机后要想正常启动必须等待测量部位的实际测量值不触发加入再启动滞环值后的限值,这样既保证了设备的安全性,也避免了风机因相同的故障频繁启停;在风力发电机组关键量的测量中使用冗余技术能很好规避不必要的故障报警,避免人为误操作,降低由测量传感器硬件故障引起的报警停机,提高测量值的准确度,使风力机组可以在恶劣的状况下也发挥出较好的性能。 The above method, after the fan downtime in order to wait for the normal start measurement site without actual measurement value triggering added after restarting the hysteresis limit value, it will ensure the safety of the equipment, but also to avoid the same due to the fan fault frequent starts and stops; key using redundancy in the measurement of the amount of wind turbines is well avoid unnecessary fault alarm, to avoid human error, reducing the downtime caused by the alarm measuring sensor hardware failures, improve the accuracy of the measured values so that wind turbines can also play a better performance in harsh conditions.

Description

故障诊断方法及系统 Fault diagnosis method and system

技术领域 FIELD

[0001] 本发明涉及一种故障诊断技术,尤其涉及一种用于风力发电机组冗余测量的故障诊断方法及系统。 [0001] The present invention relates to a fault diagnosis, and particularly to a method and system for fault diagnosis of redundant measurements for wind turbines.

背景技术 Background technique

[0002] 风力发电机组的故障诊断是其电气控制系统的重要组成部分,电控系统通过故障诊断来监控系统中的各种外围设备、接口模块及软件程序的状态,从而得到控制系统的运行状态,如遇异常情况会自动给出报警提示,保护控制系统中的硬件设备,从而保证了关键零部件的使用寿命,为操作人员提供了便捷的故障提示,便于相关调试与维护;目前,行业内针对风力发电机组关键量测量还没有广泛的采用冗余技术,只是使用单个传感器组成测量系统对关键量进行测量;现有方案故障诊断技术主要采用的是循环扫描主故障标志位数组的方式,这种方式是指在软件程序中,机组电气控制系统的所有故障的发生都将对应的触发一个故障标志位,将这些标志位统一定义为一个主故障标志数组,PLC控制器每次程序循环通过扫描这个数组,得到数组中被触发的标 [0002] The fault diagnosis of the wind turbine is an important part of the electrical control system, the electronic control system to monitor the state of the system in a variety of peripheral devices, interface modules and software programs through troubleshooting, whereby the control system operating state in case of unusual circumstances it will automatically give alarm, protection and control system hardware, thus ensuring the life of key components, provides a convenient fault tips for the operator, to facilitate the relevant commissioning and maintenance; currently, the industry the key measurement for wind turbines has not been widely adopted redundancy, except for using a single measurement sensors to measure the amount of key system; prior art fault diagnosis scheme is mainly used in cyclic manner the main scanning failure flag bit array, which refers to ways in a software program, the occurrence of a failure of all electrical control system unit will trigger a corresponding failure flag, these flags will be defined as a uniform array of primary fault flag, PLC controller scan by each program cycle this array to give the array is triggered 志位位置和相应的故障代码,并把它保存起来发送至操作屏和上位机进行显示。 Flag bit positions and corresponding fault codes, send and save it to the host computer and the operation panel display. 操作人员通过操作屏和上位机对故障进行复位时,故障处理程序被调用,此时系统执行复位操作,并对主故障标志位数组进行逐位的清零复位。 When the operator to reset the fault, the fault handler is invoked by the host computer and the operation panel, when the system reset operation, and the main bit array failure flag bit is cleared by reset.

[0003] 上述方案主要有以下缺点: [0003] The embodiment mainly has the following disadvantages:

[0004] I)在风机关键量测量方面,现有方案还没有大范围的使用冗余技术,致使系统可能因为传感器的故障或测量误差而导致故障停机,降低了风机的平均无故障运行时间。 [0004] I) the fan critical aspect measurement, using conventional redundancy schemes are not a wide range, so that the system may malfunction or because the sensor measurement error caused by downtime, reduces the average fan uptime.

[0005] 2)每次的故障处理都是通过对故障位进行复位,并没有给相应的设备调整至正常状态的时间,这样会导致故障复位后风机很快启动,但由于相同的错误又一次故障停机,这样频繁的启停会很大程度上的增大设备和部件的磨损,降低其使用寿命,从而降低风机的使用寿命和平均无故障运行时间,给风机的效益带来了很大的影响。 [0005] 2) each troubleshooting is performed by resetting the fault bit, and there is no time to be adjusted to the respective normal state of the device, this will cause Reset the fault fan start soon, but the same error again, downtime, so often cycling can largely increase the wear and tear of equipment and components, reducing its useful life, thereby reducing the life of the fan and the average uptime, to benefit a big fan influences.

发明内容 SUMMARY

[0006] 本发明提供一种故障诊断方法及系统,用以解决现有技术中的缺陷,实现降低因测量误差导致的故障停机频次、延长设备使用寿命和无故障运行时间。 [0006] The present invention provides a fault diagnosis method and system to solve the drawbacks of the prior art, to achieve reduced downtime frequency measurement error due to long equipment life and uptime.

[0007] 本发明实施例提供一种故障诊断方法,包括: [0007] The embodiments of the present invention provides a fault diagnosis method, comprising:

[0008] 步骤I,在每个测量部位均设至少一个传感器,对所述传感器的测量数据分别进行间隔采集; [0008] Step I, are located at least one sensor at each measurement site, the measurement data of the sensor respectively acquisition interval;

[0009] 步骤2,将上述采集的测量数据经数据处理程序判断该测量数据是否在所述传感器设定范围内;若在则得测量值并将该测量值输入故障判断程序;若不在则发出测量报警信号; [0009] Step 2, the above-described measurement data acquired by the data processing program determines whether the measurement data within the sensor range is set; and when the input failure judgment procedure to obtain the measurements in the measurement value; issued if the measuring an alarm signal;

[0010] 步骤21,判断设置在单个测量部位的所述传感器的个数; [0010] Step 21 determines the number of the sensors provided at a single measurement site;

[0011] 步骤22,若所述传感器为一个则读取测量数据进入所述数据处理程序;该数据处理程序判断该测量数据是否满足设定范围;是,得到测量值进入故障判断程序;否,发出故障报警信号; [0011] Step 22, if the sensor is a measurement data is read into the data processing program; the data processing program determines whether the measurement data meets the set range; YES, the measured values ​​obtained into the failure determination procedure; NO, a fault alarm;

[0012] 步骤23,若传感器为两个则分别读取测量数据进入所述数据处理程序;判断所述测量数据是否在各自的设定范围内及其差值是否在设定范围内; [0012] Step 23, if the two sensors are read into the measurement data processing program data; determining whether the measurement data within the respective set range whether their difference is within a set range;

[0013] 步骤24,若两个所述测量数据中有一个在设定范围内,则以该测量数据为测量值进入所述故障判断程序并发出输出另一测量数据的传感器的测量故障报警信号;若两个所述测量数据均在各自设定范围内,则以两个所述测量数据的平均值为测量值进入故障判断程序;若两个所述测量数据均不在设定范围内或两个所述测量数据的差值不在设定范围内,则发出两个所述传感器的测量故障报警信号; [0013] Step 24, if the two measurement data in a set range, places the measurement data of the measured value into the measurement and issue failure determination program fault signal output of the sensor measurement data to another ; if the two measurements are within the respective set range, places the average of two measurement data of the measured value into the failure determination procedure; if the two measurements are not within a set range or two the difference of said measurement data is not set within a range, the measurement signals of the two sensor fault alarm is issued;

[0014] 步骤3,在故障程序中输入故障字;所述故障程序包括主故障程序和模块程序,在所述模块程序中分别输入故障字,主故障程序从所述模块程序中分别获取所述故障字; [0014] Step 3, in the input program fault Fault word; the fault and the program comprises a main program module program fault, fault input word in said each program module, the main module is obtained from the failing program respectively the fault word;

[0015] 步骤4,根据上一次输入的测量值是否满足与所述故障字对应的限值及本次输入的测量值是否满足所述故障字对应的限值与再启动滞环值之和来判断是否触发所述故障程序和进入复位程序; [0015] Step 4, according to the measured value meets the last input character corresponding to the fault limit and measurement values ​​inputted this time satisfies the word corresponding to the fault limit and hysteresis values ​​of the restart and to determining whether to trigger the fault and the program enters the reset procedure;

[0016] 步骤41,判断上一次测量值是否已经触发了该故障字; [0016] Step 41 determines whether the value of the last measurement has been triggered the fault word;

[0017] 步骤42,如果该故障字没有被触发,则判断本次测量值是否满足该故障字对应的限值;满足则触发该故障字,不满足则进入程序循环; [0017] Step 42, if the fault is not a trigger word, it is determined whether the present measured value word corresponding to the failure to meet the limit; failure to meet the trigger word is not satisfied the program proceeds to loop;

[0018] 步骤43,如果该故障字已经被触发,则判断本次测量值是否满足该故障字对应的限值与再启动滞环值之和;满足则锁定所述复位程序;若不满足则在接收到复位操作指令后执行复位程序对所述主故障程序中的该故障字进行复位,并在接收到再启动命令后执行再启动程序启动风机。 [0018] Step 43, if the word has been triggered the fault, it is determined whether the present measured value word corresponding to the failure to meet the limit value of the restart value and hysteresis; satisfies the reset procedure of the lock; is not satisfied a reset procedure after receiving a reset instruction word to the failure of the primary program failure is reset, and then start the program execution after receiving the restart command to start the fan.

[0019] 一种故障诊断系统,包括至少两个传感器和分别通过数据采集通道与所述传感器连接的PLC控制器,每两个所述传感器对应一个测量部位设置,其特征在于,所述的PLC控制器包括: [0019] A fault diagnosis system comprising at least two sensors and data acquisition channels respectively connected to the PLC with the sensor controller, each of said two sensors disposed corresponding to a measurement site, wherein said PLC The controller includes:

[0020] 故障单元,用于根据故障判断单元触发设置在该故障单元内的故障字来显示诊断故障; [0020] Fault unit for displaying the diagnosis fault according trigger word failure judgment unit disposed in the faulty cells;

[0021] 复位单元,与所述故障单元和再启动单元连接,用于根据所述故障判断单元的判断结果动作; [0021] The reset unit, and the unit fault restart unit is connected, according to a result of the failure determination means determines the operation;

[0022] 所述再启动单元,用于根据所述复位单元的动作执行再启动命令; [0022] The restart means for restarting execution command according to the action of the return means;

[0023] 数据处理单元,连接所述数据采集通道与故障判断单元,用于将所述数据采集通道采集的测量数据进行处理得到的测量值输入至所述故障判断单元; [0023] The data processing unit connected with said data collection channel failure judgment unit, the data acquisition for the measurement data channel acquisition failure determination unit performs the measurement values ​​obtained are input to the processing;

[0024] 所述故障判断单元,与所述故障单元连接,用于根据上一次输入的测量值是否触发该故障字及本次输入的测量值跟该故障字对应的限值与再启动滞环值之和的比较结果判断复位单元的动作。 [0024] The failure determination means connected to the defective cells based on the last measured value for whether the input measured value of the trigger word and the fault with the current input word corresponding to the fault limit and hysteresis restarting comparison values ​​and the determination operation of the reset means.

[0025] 其中,所述故障单元包括主故障单元和功能模块,所述功能模块连接所述故障判断单元和所述主故障单元;所述功能模块设置有用于输入所述故障字的输入端,所述主故障单元设置有用于显示被触发的所述故障字的显示模块。 [0025] wherein the failed unit includes a main unit and a failure function module, the functional module is connected to the main unit and the failure judgment unit failure; the functional module is provided with an input terminal for an input word of the fault, the main unit is provided with a failure of the fault is triggered word display module for displaying.

[0026] 进一步地,所述数据处理单元包括: [0026] Further, the data processing unit comprises:

[0027] 读取单元,与所述数据采集通道连接,用于读取所述传感器的测量数据;[0028] 判断单元,与所述读取单元连接,用于判断所述测量数据是否在所述传感器的设定范围内; [0027] The reading unit, connected to said data collection channel, for measuring the sensor data reading; [0028] determination means, the reading unit is connected, for determining whether the measurement data in the setting the range of said sensor;

[0029] 输出单元,与所述故障判断单元和判断单元连接,用于根据判断单元的判断结果输出测量值至所述故障判断单元; [0029] The output unit connected to the failure determination means and determination means for determining a value according to the measurement result output determining unit to the failure determination means;

[0030]报警单元,与所述判断单元连接,用于根据所述判断单元的判断结果发出报警信号。 [0030] The alarm unit connected to the determination unit is configured to send an alarm signal based on the result of said determination means.

[0031] 本发明提供的故障诊断方法及系统,在风力发电机组关键量的测量中使用冗余技术可以很好规避不必要的故障报警,避免人为误操作,例如在各种温度、压力和液位的变量检测中使用冗余技术既可以降低由测量传感器硬件故障引起的报警停机,又可以提高测量值的准确度,使风力机组可以在恶劣的状况下也发挥出较好的性能,冗余检测与故障诊断与在风力发电机组中的应用为风力发电机组的实时、精确控制提供了有力的保障,在故障判断程序中在故障字对应的限值中加入再启动滞环值进行判断,如果上一次没有发生该故障(如:发电机驱动侧轴温过高)报警则再启动滞环值不起作用,如果上一次已经触发了该故障则在风机启动故障判断时加入再启动滞环值,即:使发电机驱动侧轴温高限变为T2(T2 < Tl),这样风机要想正常启动必须等待发电机驱动侧轴 [0031] The fault diagnosis method and system of the present invention provides the use of redundancy in the measurement of the amount of critical wind turbines may well avoid unnecessary fault alarm, to avoid human error, such as various temperatures, pressures and liquid redundancy using a variable bit detection may be reduced due to the alarm stop measuring sensor hardware failures, but also can improve the accuracy of the measurement value, the wind turbines may also play a better performance under harsh conditions, the redundant detection and fault diagnosis and application in wind turbines to provide real-time, precise control of the wind turbine strong protection fault added value in the corresponding word failure judgment program restart hysteresis value is determined, if last not the fault (eg: a generator-side drive axle temperature is too high) then restart the alarm value has no hysteresis, if the last time the fault has been triggered is added restart hysteresis value when the fan is started failure judgment , namely: the generator becomes the upper limit of the drive-side journal temperature T2 (T2 <Tl), so that the fan in order to wait for the generator to start normal driving shaft 温降至Τ2以下,这样既保证了设备的安全性,也避免了风机因相同的故障频繁启停。 Τ2 the temperature dropped, it will ensure the safety of the equipment, but also to avoid the same failure due to the fan start and stop frequently.

附图说明 BRIEF DESCRIPTION

[0032] 图1为本发明故障诊断方法实施例的流程结构框图。 [0032] FIG. 1 a block diagram showing flow of fault diagnosis method according to an embodiment of the present invention.

[0033] 图2为本发明故障诊断系统实施例的结构示意图。 [0033] FIG 2 fault diagnosis system schematic structural diagram of the embodiment of the present invention.

[0034] 图3为本发明故障诊断方法中数据处理程序的流程图。 [0034] FIG 3 a flow diagram of the data processing program fault diagnosis method of the present invention.

[0035] 图4为本发明故障诊断方法中故障判断程序的流程图。 [0035] FIG 4 is a flowchart of the failure determination procedure of the fault diagnosis method of the present invention.

[0036] 附图标记: [0036] The reference numerals:

[0037] 10-传感器; 20-数据采集通道;30-数据处理单元; [0037] 10- Sensors; 20 channel data acquisition; 30- a data processing unit;

[0038] 40-故障判断单元;50_故障单元; 60-复位单元; [0038] The failure judgment unit 40; 50_ faulty cell; resetting unit 60;

[0039] 70-再启动单元。 [0039] The activation unit 70 again.

具体实施方式 detailed description

[0040] 为使本发明实施例的目的、技术方案和优点更加清楚,下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例是本发明一部分实施例,而不是全部的实施例。 [0040] In order that the invention object, technical solutions, and advantages of the embodiments more clearly, the following the present invention in the accompanying drawings, technical solutions of embodiments of the present invention are clearly and completely described, obviously, the described the embodiment is an embodiment of the present invention is a part, but not all embodiments. 基于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。 Based on the embodiments of the present invention, those of ordinary skill in the art to make all other embodiments without creative work obtained by, it falls within the scope of the present invention.

[0041] 如图1所示为本发明故障诊断方法流程图,本发明提供一种冗余测量故障诊断方法,步骤1,在测量部位设传感器,间隔采集该传感器的测量数据; [0041] The flowchart in FIG fault diagnosis method of the present invention shown in FIG. 1, the present invention provides a fault diagnosis method for measuring redundancy, Step 1, a sensor provided in the measurement site, the measurement data acquisition interval of the sensor;

[0042] 步骤2,将采集的测量数据经数据处理程序判断; [0042] Step 2, the measurement data collected by the data processing program is determined;

[0043] 若该测量数据在所述传感器设定范围内则得测量值并将该测量值输入故障判断程序;若不在则发出测量报警信号; [0043] If the measurement data of the measurement values ​​obtained within the set range and the sensor measurement value input failure judgment procedure; if the measurement is issued a warning signal;

[0044] 步骤3,在故障程序中输入故障字; [0044] Step 3, in the character input fault Fault program;

[0045] 步骤4,根据上一次输入的测量值是否满足与所述故障字对应的限值及本次输入的测量值是否满足所述故障字对应的限值与再启动滞环值之和来判断是否触发所述故障程序和进入复位程序。 [0045] Step 4, according to the measured value meets the last input character corresponding to the fault limit and measurement values ​​inputted this time satisfies the word corresponding to the fault limit and hysteresis values ​​of the restart and to determining whether to trigger the fault and the program enters the reset procedure.

[0046] 如图2所示为故障诊断系统结构示意图,包括用于测量数据的外围设备和PLC控制器,外围设备包括至少两个传感器10,其中每两个传感器10对应一个测量部位(图2中为环境、机舱柜、发电机和齿轮箱)设置,传感器10分别通过数据采集通道20与PLC控制器连接,PLC控制器包括数据处理单元30、故障判断单元40、故障单元50、复位单元60和再启动单元70。 [0046] FIG. 2 is a schematic structural fault diagnosis system, the peripheral device comprises a measurement data and PLC controller, peripheral device 10 comprises at least two sensors, wherein each of the two sensors 10 corresponds to a measurement site (FIG. 2 for environment cabinet nacelle, gearbox and generator) is provided, the sensor 10 are respectively connected to the PLC controller 20 via the data acquisition channel, the data processing unit comprises a PLC controller 30, the failure judgment unit 40, the fault unit 50, the reset unit 60 and restarting means 70.

[0047] 故障单元50,用于根据故障判断单元40触发设置在该故障单元50内的故障字来显示诊断故障;包括主故障单元和功能模块,功能模块连接故障判断单元和主故障单元;功能模块设置有用于输入故障字的输入端,主故障单元设置有用于显示被触发的故障字的显示模块;这里的功能模块可以按照外围设备分类也可以按照控制功能分类,在此将其按照外围设备来分类,例如:齿轮箱模块、发电机模块等,这些模块分别设有自己的故障字,每隔一段时间在通过采集测量数据以进行故障判断,在发生故障时触发功能模块的故障字同时在显示模块中显示该故障字,故障处理时仅对主故障单元的故障字进行复位操作,功能模块自己的故障字的操作仅由外围设备的反馈来实时决定。 [0047] The defective cell 50, is provided for the fault Fault word in accordance with failure judgment unit 50 to display unit 40 triggers fault diagnosis; fault includes a main unit and a functional module, the functional module connection failure judgment unit and a main unit failures; function module provided with an input terminal of the fault word, major fault unit is provided with a fault word triggered a display means for displaying; herein functional modules may follow a peripheral device classification may be under the control of functional classification, where it according to the peripheral device classification, for example: gearbox module, the generator module, each of these modules has its own fault word, every once in a while by the measurement data acquisition for fault judgment, fault trigger word function module when a failure occurs displaying the fault word, only the main word fault fault reset operation unit is operated, the function module own fault word only determined by real-time feedback to the peripheral device processing fault display module.

[0048] 复位单元60与故障单元50和再启动单元70连接,用于根据故障判断单元40的判断结果动作。 [0048] The reset unit 60 and the faulty unit 50 and the restart unit 70 is connected, according to the judgment result of the failure judgment unit 40 operation.

[0049] 再启动单元70,用于根据复位单元60的动作执行再启动命令。 [0049] The restart unit 70 for performing a reset operation in accordance with the restart command unit 60.

[0050] 数据处理单元30,连接数据采集通道20与故障判断单元40,用于将数据采集通道20采集的在传感器10设定范围内的测量数据进行处理得到的测量值输入至故障判断单元;经数据采集通道20采集的测量数据不在传感器10设定范围内时则发出测量故障报警信号;包括读取单元,与数据采集通道20连接,用于读取传感器10的测量数据;判断单元,与读取单元连接,用于判断测量数据是否在传感器10的设定范围内;输出单元,与故障判断单元40和判断单元连接,用于根据判断单元的判断结果输出测量值至故障判断单元40 ;报警单元,与判断单元连接,用于根据判断单元的判断结果发出报警信号。 [0050] The data processing unit 30, connected to the data acquisition channel 20 and the failure judgment unit 40, the data acquisition for the measurement data within the sensor 10 is set in the range of passage 20 were collected to obtain the measured value processing to the input failure judgment unit; the measurement data via data acquisition channels 20 are not collected measurement sensor fault signal is issued within the 10 range is set; includes a reading unit, connected to the data acquisition channel 20, 10 for reading the measurement data of the sensor; determining means, and connection reading unit for determining whether the measurement data in the set range of the sensor 10; output means connected to the judgment unit 40 and the failure judgment unit for judging the measurement result of the output value determination unit 40 to the fault determination unit; an alarm unit connected to the judging unit, for emitting an alarm signal according to the determination result of the determination means.

[0051] 故障判断单元40,与故障单元50连接,用于根据上一次输入的测量值是否触发该故障字及本次输入的测量值跟该故障字对应的限值与再启动滞环值之和的比较结果判断复位单元60的动作。 [0051] The failure judgment unit 40, the faulty unit 50 is connected, for measuring the value of the input according to whether a hysteresis value of the trigger word and the failure of this measured value with the input word corresponding to the fault limit and restart of and the comparison result of the operation determination unit 60 is reset.

[0052] 下面结合图2所示的故障诊断系统结构、图3所示的数据处理程序流程图、图4所示的故障判断程序流程图来详细说明图1所示的故障诊断方法的具体实施过程。 Fault diagnosis system structure as shown [0052] below with reference to FIG. FIG. 3 flowchart shown in data handler, the fault determination program shown in FIG particular embodiment of the diagnosis fault flowchart shown in FIG. 1 will be described in detail process.

[0053] 本实施例中的传感器10均采用温度传感器,温度传感器将采集的测量数据(此处为环境温度1、环境温度II;机舱柜温度1、机舱柜温度II;发电机轴温1、发电机轴温II ;齿轮箱油温1、齿轮箱油温II)经数据处理程序处理后输入设在PLC控制器内的故障判断程序,数据处理程序如图3所示以一个测量部位为例,首先判断单个测量部位的传感器的个数;若传感器为一个则通过读取单元读取数据采集通道20的测量数据,经判断单元判断该测量数据值是否在该传感器的设定范围内;是,以该测量数据位测量值经输出单元输送至故障判断单元40 ;否,经报警单元发出测量故障报警信号; [0053] In this example embodiment of the sensor temperature sensor 10 are used, the measurement data collected by a temperature sensor (ambient temperature for 1 herein, ambient temperature II; 1 cabin cabinet temperature, cabin temperature cabinet II; Hot box generator 1, II axle temperature generator; 1 gearbox oil, gearbox oil II) after treatment with a data processing program provided in the PLC controller input failure judgment program, the data processing program shown in Figure 3 to a measurement site Example first determines the number of individual sensor measurement site; if a sensor channel is read by reading the data acquisition unit 20 of the measurement data, the measurement by the determining means determines whether the data values ​​within a set range of the sensor; is conveying measurement data to the measured value via the output bit units to the failure judgment unit 40; NO, issued by the alarm unit fault signal measurement;

[0054] 若传感器为两个则通过读取单元经数据采集通道分别读取其测量的数据I和数据II,判断单元判断数据1、数据II是否均在各自传感器的设定范围内,是,判断数据I和数据II之差是否在设定范围内,在则取数据I和数据II的平均值为测量值经输出单元输送至故障判断单元40 ;若数据I不在设定范围内,数据II在设定范围内,取数据II为测量值经输出单元输送至故障判断单元40,并经报警单元发送采集数据I的传感器的测量故障报警信号;数据I在设定范围内,数据II不在设定范围内范围,取数据I为测量值经输出单元输送至故障判断单元40,并经报警单元发送采集数据II的传感器的测量故障报警信号;数据I和数据II均不在合理范围,则经报警单元发送两传感器测量故障报警信号。 [0054] If the sensor is a two-channel collecting unit is read by the read data are measurement data I and data II, data determining unit 1 determines, whether the data II are within a set range of respective sensors, that Analyzing the difference between the data I and data II is within the set range, the measured value via the output unit to the delivery failure judgment unit 40 takes the average of the data I and data II is; I if the data is not within the set range, data II within a set range, taking the measured values ​​and data II is delivered to the output unit failure judgment unit 40, and transmits the acquired data I measurement sensor fault signal via the alarm unit; I data within a set range, the data is not provided II within the given range a range, taking data I conveying the measured value via the output unit to the fault determination unit 40, and unit transmits a measurement fault alarm signal acquisition data II from the transducers alarm; data I and data II are not within a reasonable range, by the police two sensor measurement unit transmits a fault alarm signal.

[0055] 虽然每个关键部位的测量均采用的两套硬件测量设备,但是可以根据需要选择使用哪套设备进行测量,测量设备的选择可以通过操作屏和上位机的控制面板进行操作,数据采集后调用统一的数据处理程序进行数据筛选和处理。 [0055] Although the two sets of measurements for each measuring device hardware key parts are used, but may be selected according to which set of equipment for measuring, the measuring device can be selected by the operation control panel screen and the host computer, data acquisition after calling a unified data processing procedures for data selection and processing. 每一个测量传感器均具有测量值的正确范围(即为设定范围),若只有一个测量数据值处于正确范围,则该测量数据值为测量值,并给出另一个传感器存在测量故障的警告,这个警告并不停机,只起警示作用;若两个所述测量数据值均处于正确范围,还需判断其差值是否在正确范围内,若在则两个所述测量数据值的平均值为测量值,若不在则给出相应的故障报警;正常情况下均使用两套设备对测量部位进行测量,数据处理程序根据其传感器类型和设置的不同对每一套设备的测量值进行筛查,筛查范围包括:其测量值是否在设定范围内、两组测量值差值是否在设定范围内;若测量值不在设定范围内,则会给出故障报警及相关提示信息,若确定测量设备存在问题可以将有问题的设备关闭,使用正常设备,若全部故障则需更换设备;若测量值在设定范围内, Each sensor has a measuring range of the measured value of the correct (ie setting range), a measurement only if the data value is in the correct range, then the value of the measured data is measured, and the presence of a warning is given of another sensor measurement faults, the stop warning is not only served as a warning; if the two measurement data values ​​are in the correct range, it is determined whether the difference is needed in the correct range, if the average of the two values ​​of the measurement data measurements, if not in the corresponding fault alarm is given; under normal circumstances the use of two measurement site measurement apparatus, a data processing program which is different sensor type and provided on each set of measurements of the screening apparatus according to screening include: measurement value is within the set range, the difference between the two measured values ​​is within a set range; if the measured value is not within a set range, and related fault alarm message will be given, if it is determined problems exist measuring device can have problems with the device off, the device will work properly, the device must be replaced if all fault; If the measurement value within a set range, 取两组测量值的平均值用于程序运算。 The average of two measurements for the program operation.

[0056] 在环境模块中设故障字TlO ;在机舱模块中设故障字T20 ;在发电机模块中设故障字T30 ;在齿轮箱模块中设故障字T40 ;以故障字T30的触发为例介绍故障判断单元40的具体动作过程,假设经设在发电机测量部位处的两个传感器10第一轮采集数据的发电机轴温1、发电机轴温II中发电机轴温1、发电机轴温II均在传感器10的设定范围内同时发电机轴温I与发电机轴温II之差也在设定范围内,则经数据处理程序后得到测量值为发电机轴温I和发电机轴温II的平均值并输送至故障判断单元40中,首先判断上一次是否触发故障字T30,因第一轮采集数据因此没有触发故障字T30,判断该测量值是否满足根据故障字T30对应的限值T3,若满足则触发故障单元50中的故障字T30,在主故障单元的显示模块中显示故障字T30,停机对被诊断设备进行故障处理,故障处理完后通过人为操作复位 [0056] provided in the fault word Tl2O environment module; Fault word provided in the cabin module T20; T30 provided in the fault character generator module; Fault word provided in the gearbox module T40; T30 Fault word to trigger example to introduce Hot box generator failure judgment unit 40 of a specific operation procedure, by assuming 10 provided in the first round of the two sensors to collect data measured at the site of the generator 1, the generator axle temperature generator Hotbox II 1, generator shaft II are temperature sensor 10 within a set range while the difference between the generator and the generator Axle temperature Hot box I II are set within a range of, after the data handler value obtained measuring axle temperature generator and the generator I Hot box II are averaged and sent to the fault determination unit 40 first determines whether the last word T30 trigger a fault, because the first round of acquiring data word there is no fault trigger T30, which is determined according to the measurement value satisfies fault word corresponding to the T30 value T3, if the failure to meet the trigger word in the faulty unit 50 T30, T30 fault word display in the display module main unit failure, the diagnostic device is shutdown for troubleshooting, fault handling by manual operation after the reset 序,此时故障判断程序判断则执行复位程序将主故障单元显示模块中的故障字T30复位清除,而设在发电机模块内的故障字T30则不会被复位清除,通过人为操作向再启动单元70发出再启动命令,再启动单元70执行该命令重新启动风机;在第二轮通过传感器10对发电机轴温采集数据时,假设发电机轴温I在传感器10设定范围内,在经数据处理程序后得到测量值为发电机轴温I,将发电机轴温I传输至故障判断单元40,下一个程序循环再扫描该故障判断程序时首先判断上一次故障字T30是否被触发,因第一论采集数据已触发故障字T30,因此,判断本次测量值发电机轴温I是否满足根据故障字T30对应的限值T3与再启动滞环值T3'之和(此处的T3'为负偏差,因此,(T3+T3')< T3,再启动滞环值也可设置为正偏差,根据具体的参数设置),本次限值等于原限值加上再启动滞环值;若满 Sequence, then the program resets the failure determining program determines the main execution unit fault Fault word display module reset clears T30, and disposed within the generator module fault word T30 is not cleared by reset, by manual operation to restart restart command issuing unit 70, starting unit 70 and then executes the command to restart the fan; generator in the second round axle temperature sensors 10 passing through data acquisition, I assumed that the generator axle temperature sensor 10 is set within the range, by after the measurement value was obtained data handler axle temperature generator I, I Hot box is transmitted to the generator failure judgment unit 40, the first time the fault is determined whether the character T30 is triggered rescan the next program cycle the failure determination procedure, because On the first word fault data collection triggered T30, therefore, determines the present measured value generator according Bearing Temperature limits I meets T30 T3 fault word corresponding to the hysteresis value and then start T3 'sum (T3 here' negative deviation, therefore, (T3 + T3 ') <T3, and then start the hysteresis value may be set as a positive deviation, depending on the parameters), this limit is equal to the original value plus the hysteresis value the restart; If the full 足,则在故障处理停机复位后会立即再触发该故障字,该故障字无法复位清除,因此风机无法立刻启动;若不满足,执行复位程序进而通过再启动程序开机;这样,风机在故障停机后要想正常启动必须等待发电机轴温降低至(T3+T3' )以下,避免了现有技术中因相同故障造成的频繁启停,保障了设备的安全性。 Foot, then reset after a fault shutdown process will then immediately trigger the fault word, the word fault can not be reset to clear, so the fan can not start immediately; if not satisfied, then the boot program to perform a reset by restarting the program; this way, fan shutdown at fault after the normal start to wait in order to reduce to a generator axle temperature (T3 + T3 ') or less, to avoid frequent starts and stops of the prior art due to the same cause failure to ensure the safety of the apparatus.

[0057] 为了避免风机因故障复位带来的频繁启停,在故障判断中加入了滞环控制,既可以是风机安全稳定的运行,又避免了发生故障时频繁的启停。 [0057] In order to avoid the fan due to failure to reset the start and stop frequently caused, the failure judgment added in the hysteresis control, the fan may be a safe and stable operation, avoiding frequent start and stop time of the failure. 在定义故障判断条件时,给每个判断条件加一个滞后环节。 When the failure determination condition is defined, for each determination condition plus a lag element. 例如:发电机驱动侧轴温高于Tl时风机故障停机,若像已有方案不加入滞后环节,风机复位后启机,很快发电机驱动侧轴温又会高于Tl而造成再一次的停机。 For example: a generator-side drive axle temperature Tl higher than the fan downtime, as if the program has not added lags, the reset start up wind turbine, a generator drive side journal temperature quickly than would once again caused Tl stop. 具体操作方法:在故障判断限值中加入滞环值,如果上一次没有发生该故障(如:发电机驱动侧轴温过高)报警则滞环值不起作用,如果上一次已经触发了该故障则在风机启动故障判断时加入滞环值,即:使发电机驱动侧轴温高限变为T2(T2 < Tl),这样风机要想正常启动必须等待发电机驱动侧轴温降至T2以下。 Specific methods of operation: addition of hysteresis limit value of the failure determination, if the fault is not the last (eg: a generator-side drive axle temperature is too high) hysteresis value the alarm does not work, if the time has already triggered the fault hysteresis value added is started when the failure judgment of the fan, namely: the generator becomes the upper limit of the drive-side journal temperature T2 (T2 <Tl), so that in order to properly start the fan drive must wait for the generator-side journal temperature dropped T2 the following. 这样既保证了设备的安全性,也避免了风机因相同的故障频繁启停。 This will ensure the safety of the equipment, but also to avoid the same failure due to the fan start and stop frequently.

[0058] 最后应说明的是:以上实施例仅用以说明本发明的技术方案,而非对其限制;尽管参照前述实施例对本发明进行了详细的说明,本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。 [0058] Finally, it should be noted that: the above embodiments are intended to illustrate the present invention, rather than limiting;. Although the present invention has been described in detail embodiments, those of ordinary skill in the art should be understood: may still be made to the technical solutions described in each embodiment of the modified or part of the technical features equivalents; as such modifications or replacements do not cause the essence of corresponding technical solutions to depart from the technical solutions of the embodiments of the present invention and scope.

Claims (7)

  1. 1.一种故障诊断方法,其特征在于,包括: 步骤1,在每个测量部位均设至少一个传感器,对所述传感器的测量数据分别进行间隔米集; 步骤2,将上述采集的测量数据经数据处理程序判断该测量数据是否在所述传感器设定范围内;若在则得测量值并将该测量值输入故障判断程序;若不在则发出测量报警信号; 步骤3,在故障程序中输入故障字; 步骤4,根据上一次输入的测量值是否满足与所述故障字对应的限值及本次输入的测量值是否满足所述故障字对应的限值与再启动滞环值之和来判断是否触发所述故障程序和进入复位程序。 A fault diagnosis method, characterized by comprising: step 1, measuring points are located in each of the at least one sensor, the measurement data of the sensor respectively set interval m; Step 2, the measurement data of the acquired the data processing program by determining whether the measurement data within the sensor range is set; and if the measured value of the input failure judgment procedure to obtain measured values; measuring is issued if the alarm signal; step 3, the program entered in the fault fault word; step 4, according to the measured value meets the last input character corresponding to the fault limit and measurement values ​​inputted this time satisfies the word corresponding to the fault limit and hysteresis values ​​of the restart and to determining whether to trigger the fault and the program enters the reset procedure.
  2. 2.根据权利要求1所述的故障诊断方法,其特征在于,所述步骤2包括: 步骤21,判断设置在单个测量部位的所述传感器的个数; 步骤22,若所述传感器为一个则读取测量数据进入所述数据处理程序;该数据处理程序判断该测量数据是否满足设定范围;是,得到测量值进入故障判断程序;否,发出故障报警信号; 步骤23,若传感器为两个则分别读取测量数据进入所述数据处理程序;判断所述测量数据是否在各自的设定范围内及其差值是否在设定范围内; 步骤24,若两个所述测量数据中有一个在设定范围内,则以该测量数据为测量值进入所述故障判断程序并发出输出另一测量数据的传感器的测量故障报警信号;若两个所述测量数据均在各自设定范围内且两个所述测量数据的差值也在设定范围内,则以两个所述测量数据的平均值为测量值进入故障判断程序 The fault diagnosis method according to claim 1, wherein said step 2 comprises: step number 21, provided is determined in a single measurement site of the sensor; step 22, if the sensor is then a read the measurement data into the data processing program; the data processing program determines whether the measurement data meets the set range; YES, the measured values ​​obtained into the failure determination procedure; NO, a fault alarm signal; step 23, if the two sensors it will read the measurement data into the data processing program; determining whether the measured data within the respective set range and the difference is within a set range; step 24, if the two measurement data a within a set range, places the measurement data of the measured value into the failure determination program and gives an output of another sensor measurement data measured fault signal; if the two measurements are within the respective set range and the mean difference of the two measurements are also set within a range, two places of the measurement data of the measured value into the failure determination procedure 若两个所述测量数据均在各自设定的范围内但两个所述测量数据的差值不在设定范围内或两个所述测量数据均不在设定范围内,则发出两个所述传感器的测量故障报警信号。 If the two measurements are within the respective set range but the difference between the two measured data within the set range or not the two measurements are not within a set range, issuing the two measuring fault alarm signal of the sensor.
  3. 3.根据权利要求2所述的故障诊断方法,其特征在于,步骤3中,所述故障程序包括主故障程序和对应所述测量部位设置的模块程序,在所述模块程序中分别输入故障字,主故障程序从所述模块程序中分别获取所述故障字。 3. The fault diagnosis method according to claim 2, wherein, in step 3, the fault and the fault sequence program comprising a main program module corresponding to said measurement site is provided, said input fault word program modules respectively , the program acquiring major fault fault word from the module programs respectively.
  4. 4.根据权利要求3所述的故障诊断方法,其特征在于,所述步骤4包括: 步骤41,判断上一次测量值是否已经触发了该故障字; 步骤42,如果该故障字没有被触发,则判断本次测量值是否满足该故障字对应的限值;满足则触发该故障字,不满足则进入程序循环; 步骤43,如果该故障字已经被触发,则判断本次测量值是否满足该故障字对应的限值与再启动滞环值之和;满足则锁定所述复位程序;若不满足则在接收到复位操作指令后执行复位程序对所述主故障程序中的该故障字进行复位,并在接收到再启动命令后执行再启动程序启动风机。 4. A fault diagnosis method according to claim 3, wherein said step 4 includes: Step 41, determines whether the value of the last measurement has been triggered the fault word; step 42, if the fault is not a trigger word, the measured value is judged whether the failure to meet the corresponding word value; failure to meet the trigger word is not satisfied the program proceeds to loop; step 43, if the word has been triggered the fault, it is determined whether or not the present measurement value satisfies the fault word corresponding to the limit value of the restart value and hysteresis; satisfies the reset procedure of the lock; not satisfied is executed after receiving a reset instruction to reset the program word for the failure of the primary fault in the reset procedure and perform restart after receiving a command to restart the program to start the fan.
  5. 5.一种故障诊断系统,包括至少两个传感器和分别通过数据采集通道与所述传感器连接的PLC控制器,每两个所述传感器对应一个测量部位设置,其特征在于,所述的PLC控制器包括: 故障单元,用于根据故障判断单元触发设置在该故障单元内的故障字来显示诊断故障;复位单元,与所述故障单元和再启动单元连接,用于根据所述故障判断单元的判断结果动作; 所述再启动单元,用于根据所述复位单元的动作执行再启动命令; 数据处理单元,连接所述数据采集通道与故障判断单元,用于将所述数据采集通道采集的测量数据进行处理得到的测量值输入至所述故障判断单元; 所述故障判断单元,与所述故障单元连接,用于根据上一次输入的测量值是否触发该故障字及本次输入的测量值跟该故障字对应的限值与再启动滞环值之和的比较结果判断复位单元的动 A fault diagnosis system, comprising at least two sensors and a PLC controller are connected to the data acquisition channel with the sensor, the two sensors each corresponding to a measurement site is provided, wherein, said control PLC comprising: defective cells, for displaying the diagnosis fault according to fault determination unit triggers the fault word disposed within the failed unit; resetting unit, and the unit fault restart unit is connected, according to the failure determination means operation determination result; the restart unit for performing an operation restart command according to said reset means; a data processing unit connected to the data acquisition channel with failure judgment means for measuring the collected data acquisition channels measured value data input to the failure determination process unit obtained; the failure judgment means, connected to the faulty unit, based on the last measured value for whether the input measured value of the trigger word and the fault with the current input word corresponding to the failure and restart hysteresis limit value and a comparison result of the reset determination unit is movable 作。 Make.
  6. 6.根据权利要求5所述的故障诊断系统,其特征在于,所述故障单元包括主故障单元和功能模块,所述功能模块连接所述故障判断单元和所述主故障单元;所述功能模块设置有用于输入所述故障字的输入端,所述主故障单元设置有用于显示被触发的所述故障字的显示模块。 6. The fault diagnosis system according to claim 5, characterized in that said failure means comprises a main unit and a failure function module, the functional module is connected to the main unit and the failure judgment unit failure; the functional module is provided with a terminal for inputting an input word of the fault, the fault unit is provided with the main fault is triggered word display module for displaying.
  7. 7.根据权利要求6所述的故障诊断系统,其特征在于,所述数据处理单元包括: 读取单元,与所述数据采集通道连接,用于读取所述传感器的测量数据; 判断单元,与所述读取单元连接,用于判断所述测量数据是否在所述传感器的设定范围内; 输出单元,与所述故障判断单元和判断单元连接,用于根据判断单元的判断结果输出测量值至所述故障判断单元; 报警单元,与所述判断单元连接,用于根据所述判断单元的判断结果发出报警信号。 7. The fault diagnosis system according to claim 6, wherein said data processing unit includes: a reading unit, connected with said data collection channel, for reading the measurement data of the sensor; determining means, connected with the reading unit, for determining whether the measurement data is within a set range of the sensor; an output unit connected to the failure judgment means and the judgment means for judging according to outputs the judgment result of the measurement unit values ​​to the failure determination means; an alarm unit, connected to said determining unit, for emitting an alarm signal according to the determination result of the determination unit.
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