WO2018143404A1 - 状態分析装置、表示方法、およびプログラム - Google Patents

状態分析装置、表示方法、およびプログラム Download PDF

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Publication number
WO2018143404A1
WO2018143404A1 PCT/JP2018/003585 JP2018003585W WO2018143404A1 WO 2018143404 A1 WO2018143404 A1 WO 2018143404A1 JP 2018003585 W JP2018003585 W JP 2018003585W WO 2018143404 A1 WO2018143404 A1 WO 2018143404A1
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WIPO (PCT)
Prior art keywords
state
parameter
target device
parameters
current
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PCT/JP2018/003585
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English (en)
French (fr)
Japanese (ja)
Inventor
園田　隆
森下　靖
熊野　信太郎
Original Assignee
三菱日立パワーシステムズ株式会社
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Application filed by 三菱日立パワーシステムズ株式会社 filed Critical 三菱日立パワーシステムズ株式会社
Priority to CN201880009002.3A priority Critical patent/CN110235010B/zh
Priority to KR1020197022705A priority patent/KR102238869B1/ko
Priority to SG11201907246RA priority patent/SG11201907246RA/en
Publication of WO2018143404A1 publication Critical patent/WO2018143404A1/ja
Priority to PH12019501815A priority patent/PH12019501815A1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M99/00—Subject matter not provided for in other groups of this subclass
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
    • G01R15/18—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
    • G01R19/2506—Arrangements for conditioning or analysing measured signals, e.g. for indicating peak values ; Details concerning sampling, digitizing or waveform capturing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
    • G01R19/252—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques using analogue/digital converters of the type with conversion of voltage or current into frequency and measuring of this frequency
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/34—Testing dynamo-electric machines
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B23/00—Testing or monitoring of control systems or parts thereof
    • G05B23/02—Electric testing or monitoring

Definitions

  • the present invention relates to a state analysis device, a display method, and a program.
  • a current clamp is sandwiched at a predetermined portion of the apparatus and a current signal is measured.
  • the monitoring device generates a frequency domain graph of the current by performing a fast Fourier transform on the measured current signal and displays it on the screen (see, for example, Patent Document 1). Then, the inspector observes the displayed frequency domain graph, and performs abnormality detection and identification of the apparatus. Specifically, the inspector specifies a parameter representing a predetermined operation of the apparatus from the observation result of the frequency domain graph, and specifies an operation state related to the parameter.
  • An object of the present invention is to provide a state analysis device, a display method, and a program that can easily identify a state of a target device and a change in the state.
  • the state analysis device includes a current acquisition unit that acquires a current signal flowing through the target device, and a state of the target device based on the current signal at a timing related to a certain period.
  • a parameter calculation unit that calculates values of a plurality of parameters that vary depending on each other and have a correlation with each other, and a predetermined threshold value that serves as a determination criterion for the state of the target device in a coordinate space with each of the plurality of parameters as an axis Display information in which a dividing line representing the first figure, the first figure representing the values of the plurality of parameters at one timing, and the second figure representing the amount of change in the values of the plurality of parameters calculated at different timings are arranged
  • the display information generation unit when at least one value of the plurality of parameters related to different timings crosses the threshold value, The display information including a predetermined message may be generated.
  • the display information generation unit includes the case where at least one value of the plurality of parameters related to different timings crosses the threshold value, and The display form of the first graphic may be different depending on whether the threshold is not crossed.
  • the state of the target device is a normal state in which the target device is normal, and the target device is abnormal.
  • the caution state in which the state of the target device can transition to the abnormal state
  • the display information generation unit is configured to distinguish the normal state and the caution state as the dividing line.
  • the display information including a first dividing line and a second dividing line that separates the attention state and the abnormal state may be generated.
  • the target device includes a motor that rotates around the rotor and an auxiliary device that rotates together with the rotor.
  • a plurality of parameters, a parameter representing a general state of the target device, a parameter representing a state of the rotor, a parameter representing a misalignment state of the rotor and the auxiliary device, and a flow to the motor It may be a plurality of parameters selected from the group consisting of a parameter indicating an effective value of a current, a parameter indicating a quality of a power supply related to the current, and a parameter indicating a state of the auxiliary machine.
  • the display method varies according to the state of the target device based on the current signal at a timing related to acquiring a current signal flowing through the target device and a certain period. Calculating a value of a plurality of parameters having a correlation with each other; calculating a change amount of the value of the plurality of parameters calculated at different timing; and creating a coordinate space about each of the plurality of parameters as an axis Display information in which a dividing line representing a threshold value as a criterion for determining the state of the target device, a first graphic representing the values of the plurality of parameters according to one timing, and a second graphic representing the amount of change are arranged Display.
  • the program acquires a current signal flowing through the target device from a computer, and at a timing related to a certain period, based on the current signal, depending on the state of the target device.
  • a dividing line representing a threshold value as a criterion for determining the state of the target device, a first graphic representing the values of the plurality of parameters related to one timing, and a second graphic representing the amount of change are arranged. Generating display information.
  • the state analysis device calculates a parameter from the current signal, and generates display information for displaying the parameter together with a division line representing a threshold value. Thereby, based on the displayed information, the state of the target device can be specified without requiring skill. Further, the state analysis device generates display information for displaying a graphic representing the amount of change in the parameter. Thereby, the state transition of the target device can be recognized based on the displayed information. In addition, the state analysis apparatus arranges a graphic representing a parameter in a coordinate space around each of a plurality of parameters having a correlation with each other. Thereby, the state which is not linked
  • FIG. 1 is a schematic diagram illustrating a configuration of a state analysis system according to the first embodiment.
  • the state analysis system 1 according to the first embodiment includes a state analysis device 10, a display device 20, a target device 30, a three-phase AC power supply 40, a power line 50, and a clamp ammeter 60.
  • the state analysis device 10 according to the first embodiment causes the display device 20 to display information indicating the state of the target device 30 to be inspected.
  • the target device 30 according to the first embodiment is a rotating machine system including an auxiliary machine such as a motor driven by a three-phase AC power source, a pump or a fan that rotates together with a rotor included in the motor.
  • the target device 30 is connected to the three-phase AC power supply 40 via the power line 50.
  • the power line 50 is sandwiched between the clamp ammeters 60.
  • the state analysis system 1 includes three clamp ammeters 60, and each clamp ammeter 60 sandwiches different power lines. In other embodiments, the state analysis system 1 may include one or two clamp ammeters 60 and may not measure a part of the current among the three power lines 50.
  • the clamp ammeter 60 measures the magnitude of the current flowing through the power line 50 and outputs it as a digital signal (current signal) to the state analysis apparatus 10.
  • the state analysis device 10 causes the display device 20 to display information representing the state of the target device 30 based on the current signal received from the clamp ammeter 60.
  • FIG. 2 is a schematic block diagram showing the configuration of the state analysis apparatus according to the first embodiment.
  • the state analysis device 10 includes a current acquisition unit 11, a parameter calculation unit 12, a parameter storage unit 13, a threshold storage unit 14, a graph generation unit 15, a transition detection unit 16, and a display control unit 17.
  • the current acquisition unit 11 acquires a current signal that flows from the clamp ammeter 60 to the target device 30 via the power line 50.
  • the parameter calculation unit 12 calculates the values of a plurality of parameters that vary depending on the state of the target device 30 based on the current signal acquired by the current acquisition unit 11 at a timing related to a certain period.
  • the parameter calculated by the parameter calculation unit 12 is referred to as a current parameter. Specific examples of current parameters will be described later.
  • At least two of the plurality of current parameters calculated by the parameter calculation unit 12 are parameters having a correlation with each other.
  • the parameter storage unit 13 stores the value of the current parameter calculated by the parameter calculation unit 12 in association with the calculation time.
  • the threshold value storage unit 14 stores a threshold value that is a criterion for determining the state of the target device 30 for each current parameter.
  • the type of the state of the target device 30 according to the first embodiment includes a normal state in which the target device 30 is normal, an abnormal state in which the target device 30 is abnormal, and a state in which the state of the target device 30 can transition to an abnormal state. This is a state of caution. That is, the threshold value storage unit 14 stores, for each current parameter, a first threshold value that distinguishes between a normal state and a caution state, and a second threshold value that distinguishes between a caution state and an abnormal state.
  • the graph generation unit 15 generates a graph image representing the amount of change from the current parameter value calculated by the parameter calculation unit 12 and the previous current parameter value to the current current parameter value.
  • the graph image is a graph in which two current parameters having a correlation are taken on the vertical axis and the horizontal axis.
  • a dividing line representing a threshold value related to each current parameter, a plot (first graphic) representing values of two current parameters, and an arrow (second graphic) representing a change amount are arranged.
  • the transition detection unit 16 detects that the value of each current parameter has changed across the threshold stored in the threshold storage unit 14.
  • the display control unit 17 generates display information to be output to the display device 20 based on the graph screen generated by the graph generation unit and the detection result by the transition detection unit 16.
  • the display control unit 17 is an example of a display information generation unit.
  • the parameter calculation unit 12 calculates a KI parameter, an Lpole parameter, an Lshaft parameter, an Irms parameter, a THD parameter, an IHD parameter, an Lx parameter, and an Iub parameter.
  • the KI parameter is a parameter that represents the general state of the target device 30.
  • the KI parameter is a Cullback library information amount for the inspection amplitude probability density function ft (x) obtained from the current signal and the reference amplitude probability density variable fr (x) of the reference sine wave signal waveform indicating the rated current of the motor. is there.
  • the KI parameter is obtained by the following equation (1).
  • the Lpole parameter is a parameter that represents the state of the rotor of the target device 30.
  • the Lpole parameter is the size of the sideband wave peak of the current spectrum at a frequency position separated by a predetermined frequency from the current spectrum peak in the frequency spectrum obtained by frequency domain conversion of the current signal.
  • the sideband wave according to the Lpole parameter is a sideband wave that varies due to the pole passing frequency of the motor.
  • the Lshaft parameter is a parameter that represents the misalignment state of the rotor and auxiliary equipment of the target device 30.
  • the Lshaft parameter is obtained by the size of the sideband wave peak of the current spectrum at a frequency position separated from the current spectrum peak by a predetermined frequency in the frequency spectrum obtained by frequency domain conversion of the current signal.
  • the sideband wave related to the Lshaft parameter is a sideband wave that varies due to the actual rotational frequency of the motor.
  • the Irms parameter is a parameter for monitoring the rotating machine load and state fluctuation of the target device 30.
  • the Irms parameter is an effective current value that can be obtained by dividing the square sum of the current values at each sampling timing by the number of sampling timings and obtaining the square root thereof.
  • the IHD parameter is a ratio between the maximum harmonic component of the current signal and the power supply frequency component.
  • the IHD parameter can be obtained by extracting the harmonic component from the current signal and dividing the maximum value within a preset order of the harmonic component by the power supply frequency effective value.
  • the THD parameter is the ratio of the total harmonic component of the current signal to the power supply frequency component.
  • the THD parameter can be obtained by extracting a harmonic component from the current signal and dividing the square root of the square sum of each harmonic component within a preset order by the effective value of the power supply frequency of the current signal.
  • Both the IHD parameter and the THD parameter are parameters representing the quality of the three-phase AC power supply 40.
  • the Lx parameter is a parameter that represents the state of the auxiliary device of the target device 30.
  • the Lx parameter is the size of the sideband wave peak of the current spectrum at a frequency position separated from the current spectrum peak by a predetermined frequency in the frequency spectrum obtained by frequency domain conversion of the current signal.
  • the sideband wave related to the Lx parameter fluctuates due to the sideband wave that fluctuates due to the blade passing frequency of the pump or blower, the sideband wave that fluctuates due to the meshing frequency of the gear unit, and the rotational frequency of the pulley belt. Sideband waves or sideband waves that vary due to sideband waves that vary due to the sliding frequency of the rotor bar.
  • the Lx parameter indicated by the magnitude of the sideband peak that fluctuates due to the blade passing frequency of the pump or blower is referred to as the Lbp parameter.
  • the Lx parameter indicated by the magnitude of the sideband peak that fluctuates due to the meshing frequency of the gear device is referred to as the Lgz parameter.
  • the Lx parameter indicated by the peak of the sideband wave that fluctuates due to the rotational frequency of the pulley belt is referred to as the Lbr parameter.
  • the Lx parameter indicated by the magnitude of the peak of the sideband that varies due to any one of the sidebands that varies due to the sliding frequency of the rotor bar is referred to as an Lrs parameter.
  • a pump, a blower, a gear device, a pulley belt, and a rotor bar are examples of auxiliary machines of the target device 30.
  • the Iub parameter is a parameter that represents the power supply quality or the deterioration status of the stator and inverter of the motor.
  • the Iub parameter can be obtained by dividing the difference between the maximum value and the minimum value among the current effective values of the three-phase current signals by the sum of the maximum value and the minimum value. That is, the Iub parameter is a parameter indicating the three-phase current balance of the current signal.
  • the KI parameter increases as the rotor condition deteriorates, and the Lpole parameter decreases as the rotor condition deteriorates. That is, the KI parameter and the Lpole parameter have a correlation with respect to the state of the rotor of the target device 30.
  • the KI parameter increases when the unbalanced state of the motor shaft system deteriorates, and the Lshaft parameter and various Lx parameters decrease when the unbalanced state of the motor shaft system deteriorates. That is, the KI parameter, the Lshaft parameter, and the various Lx parameters have a correlation with respect to the unbalanced state of the shaft system of the motor of the target device 30.
  • the KI parameter increases when the motor shaft misalignment state deteriorates
  • the Lshaft parameter decreases when the motor shaft misalignment state deteriorates. That is, the KI parameter and the Lshaft parameter have a correlation with respect to the misalignment state of the motor shaft system of the target device 30.
  • Both the KI parameter and the Irms parameter increase when the state of load fluctuation deteriorates. That is, the KI parameter and the Irms parameter have a correlation with respect to the load fluctuation state of the target device 30.
  • the KI parameter, the THD parameter, the IHD parameter, and the Iub parameter all increase when the motor stator state or power quality deteriorates.
  • the KI parameter, the THD parameter, the IHD parameter, and the Iub parameter have a correlation with respect to the stator state or power supply quality of the target device 30.
  • Both the Lpole parameter and the Lshaft parameter decrease as the motor condition deteriorates. That is, the Lpole parameter and the Lshaft parameter have a correlation with respect to the state of the rotor of the target device 30.
  • FIG. 3 is a diagram illustrating an example of information stored in the parameter storage unit according to the first embodiment.
  • the parameter storage unit 13 includes a measurement time, a KI parameter, an Lpole parameter, an Lshaft parameter, an Irms parameter, for each measurement time that is a timing related to a certain period (for example, half day or every day).
  • the THD parameter, IHD parameter, Lx parameter, and Iub parameter are stored in association with each other.
  • FIG. 4 is a diagram illustrating an example of information stored in the threshold storage unit according to the first embodiment.
  • the threshold storage unit 14 includes a range of values that are in a normal state and a caution for each of the KI parameter, Lpole parameter, Lshaft parameter, Irms parameter, THD parameter, IHD parameter, Lx parameter, and Iub parameter.
  • a range of values to be in a state and a range of values to be in an abnormal state are stored.
  • the threshold that delimits the range of values that become normal and the range of values that become cautionary state is the first threshold
  • the threshold that delimits the range of values that become cautionary and the range of values that become abnormal is the second threshold value.
  • storing the range of values for the normal state, the range of values for the caution state, and the range of values for the abnormal state is equivalent to storing the first threshold and the second threshold.
  • the range of values for the normal state, the range of values for the caution state, and the range of values for the abnormal state for each current parameter are as follows.
  • the range shown below is an example to the last, and it is not restricted to this about other embodiment.
  • the value range of the KI parameter that is in a normal state is less than 1.0.
  • the range of the value of the KI parameter that becomes the attention state is 1.0 or more and less than 1.5.
  • the range of the value of the KI parameter that becomes an abnormal state is 1.5 or more. That is, the first threshold value related to the KI parameter is 1.0, and the second threshold value related to the KI parameter is 1.5.
  • the range of the value of the Lpole parameter that is in a normal state is over 50 dB.
  • the range of the value of the Lpole parameter that becomes the attention state is more than 40 dB and less than 50 dB.
  • the range of the value of the Lpole parameter that becomes an abnormal state is 40 dB or less. That is, the first threshold value related to the Lpole parameter is 50 dB, and the second threshold value related to the Lpole parameter is 40 dB.
  • the value range of the Lshaft parameter that is in a normal state is more than 50 dB.
  • the range of the value of the Lshaft parameter that is a caution state is more than 40 dB and less than 50 dB.
  • the range of the value of the Lshaft parameter that becomes an abnormal state is 40 dB or less. That is, the first threshold value related to the Lshaft parameter is 50 dB, and the second threshold value related to the Lshaft parameter is 40 dB.
  • the range of the value of the Irms parameter that is in a normal state is a variation of less than ⁇ 10%.
  • the range of the value of the Irms parameter that is a caution state is a variation of ⁇ 10% or more and a variation of less than ⁇ 20%.
  • the range of the value of the Irms parameter that becomes an abnormal state is a variation of ⁇ 20% or more. That is, the first threshold value related to the Irms parameter has a variation of ⁇ 10%, and the second threshold value related to the Irms parameter has a variation of ⁇ 20%.
  • the value range of the THD parameter that is in a normal state is less than 5%.
  • the range of the value of the THD parameter that is the attention state is 5% or more and less than 10%.
  • the range of the value of the THD parameter that becomes an abnormal state is 10% or more. That is, the first threshold value related to the THD parameter is 5%, and the second threshold value related to the THD parameter is 10%.
  • the range of IHD parameter values that will be in a normal state is less than 3%.
  • the range of the value of the IHD parameter that becomes the attention state is 3% or more and less than 5%.
  • the range of the value of the IHD parameter that becomes an abnormal state is 5% or more. That is, the first threshold value related to the IHD parameter is 3%, and the second threshold value related to the IHD parameter is 5%.
  • the value range of the Lx parameter that is in a normal state is over 50 dB.
  • the range of the value of the Lx parameter that is a caution state is more than 40 dB and less than 50 dB.
  • the range of the value of the Lx parameter that becomes an abnormal state is 40 dB or less. That is, the first threshold value related to the Lx parameter is 50 dB, and the second threshold value related to the Lx parameter is 40 dB.
  • the value range of the Iub parameter that is normal is less than 3%.
  • the range of the value of the Iub parameter that is in the attention state is 3% or more and less than 5%.
  • the range of the value of the Iub parameter that is in an abnormal state is 5% or more. That is, the first threshold value related to the Iub parameter is 3%, and the second threshold value related to the Iub parameter is 5%.
  • FIG. 5 is a flowchart showing current parameter calculation processing by the state analysis apparatus according to the first embodiment.
  • the state analysis device 10 executes a current parameter calculation process at each timing related to a certain period.
  • the current acquisition unit 11 of the state analysis device 10 acquires a current signal from the clamp ammeter 60 (step S1). Since the current acquisition unit 11 acquires a current signal at each sampling timing, the current signal acquired by the current acquisition unit 11 indicates a change in the magnitude of the current during a certain period.
  • the parameter calculation unit 12 performs frequency domain conversion on the current signal to generate a frequency domain waveform (step S2).
  • An example of the frequency domain conversion technique is FFT.
  • the parameter calculation unit 12 calculates a current parameter based on the current signal acquired in step S1 and the frequency domain waveform generated in step S2 (step S3).
  • the parameter calculation unit 12 records the calculated current parameter in the parameter storage unit 13 in association with the current time (step S4).
  • the state analysis apparatus 10 can record the time series of the current parameters in the parameter storage unit 13 by executing the above-described current parameter calculation processing at each timing according to a certain period.
  • FIG. 6 is a flowchart showing current parameter display processing by the state analysis apparatus according to the first embodiment.
  • the state analysis apparatus 10 receives an input of a set of current parameters to be displayed (step S11).
  • the input of the set of current parameters is a parameter pair (for example, a pair of Lshaft parameter and Lpole parameter, a pair of THD parameter and IHD parameter, a pair of KI parameter and Lx parameter) which is preset in the state analysis apparatus 10 and has a correlation with each other. Etc.) is received by accepting selection by the user from the list.
  • the input of the current parameter set may be made by the input of any two parameters by the user.
  • the graph generation unit 15 of the state analysis apparatus 10 draws a coordinate space having the axis G1 as each current parameter related to the selected pair (step S12). That is, the graph generation unit 15 draws an orthogonal axis G1 that represents a pair of current parameters.
  • “drawing” means placing a figure in a virtual space (virtual plane).
  • the graph generation unit 15 reads out the first threshold value and the second threshold value associated with each current parameter associated with the selected pair from the threshold storage unit 14, and the division line G2 (the first division line) representing the first threshold value. ) And a dividing line G2 (second dividing line) representing the second threshold value are drawn (step S13).
  • the dividing line G2 representing the threshold value related to one current parameter is a line parallel to the axis G1 representing the one current parameter.
  • the graph generation unit 15 draws on the coordinate space a plot G3 representing the value of each current parameter related to the pair selected from the parameter storage unit 13 and the last recorded value (value after change). (Step S14).
  • the graph generation unit 15 calculates the value of each current parameter associated with the pair selected from the parameter storage unit 13 from the coordinates indicating the second recorded value from the end (the value before the change).
  • An arrow G4 extending to the coordinates representing the value of is drawn on the coordinate space (step S15).
  • the difference between the measurement time associated with the value before the change and the measurement time associated with the value after the change is equal to the time according to a certain period.
  • the arrow G4 becomes longer as the difference between the value before the change and the value after the change is larger. That is, the arrow G4 is longer as the change amount of the current parameter is larger.
  • the transition detection unit 16 determines that at least one value of the current parameter associated with the selected pair is the first threshold value or the first threshold value. It is determined whether or not it has changed across the threshold value 2 (step S16).
  • the graph generation unit 15 uses a predetermined message (for example, “the state of the target device 30 changes to the attention state”). "Done” etc.) is drawn (step S17). The message continues to be displayed until a predetermined time elapses from the timing when the current parameter value crosses the threshold value.
  • the predetermined message may be drawn only when the value of the current parameter changes in a direction in which the state deteriorates across the first threshold value or the second threshold value.
  • the display form of the plot G3 may be different. Examples of the display form of the plot G3 include the color of the plot G3, the size of the plot G3, and the presence or absence of blinking of the plot G3. Note that if the value of the current parameter does not cross the first threshold value and the second threshold value (step S16: NO), the graph generation unit 15 does not draw a predetermined message.
  • the display control unit 17 generates display information based on the graphic drawn by the graph generation unit 15 and outputs the display information to the display device 20 (step S18).
  • the display device 20 includes a dividing line G2 representing the threshold value of the current parameter, a plot G3 representing the value of the pair of current parameters, and an arrow G4 representing the amount of change in the value of the current parameter calculated at different timings. Display the placed graph.
  • FIG. 7 is a diagram illustrating an example of a graph showing the relationship between the KI parameter and the Lpole parameter.
  • the display device 20 displays a graph as shown in FIG.
  • the state of the target device 30 can be determined based on the KI parameter and the Lpole parameter.
  • the KI parameter and the Lpole parameter have a correlation with respect to the state of the rotor of the target device 30. Therefore, the user can easily confirm the state of the rotor of the target device 30 using the graph shown in FIG. Specifically, the KI parameter increases as the rotor condition deteriorates, and the Lpole parameter decreases as the rotor condition deteriorates.
  • the position of the plot G3 usually moves in the lower right direction.
  • the moving direction of the plot G3 is not the lower right direction, it can be determined that an event different from the normal deterioration of the rotor has occurred.
  • FIG. 8 is a diagram illustrating an example of a graph showing the relationship between the IHD parameter and the THD parameter.
  • a graph as shown in FIG. 8 the state of the target device 30 can be determined based on the IHD parameter and the THD parameter.
  • the IHD parameter and the THD parameter have a correlation with respect to the state of the stator of the motor of the target device 30 or the power quality. Therefore, the user can easily confirm the state of the stator of the motor of the target device 30 or the power quality by using the graph shown in FIG. Specifically, the IHD parameter and the THD parameter increase as the motor stator state or power supply quality deteriorates.
  • the position of the plot G3 usually moves in the upper right direction.
  • the moving direction of the plot G3 is not the upper right direction, it can be determined that an event different from the normal state of the stator of the motor or the deterioration of the power supply quality has occurred.
  • FIG. 9 is a diagram illustrating an example of a graph showing the relationship between the Lpole parameter and the Lshaft parameter.
  • the display device 20 displays a graph as shown in FIG.
  • the state of the target device 30 can be determined based on the Lpole parameter and Lshaft.
  • the Lpole parameter and the Lshaft parameter have a correlation with respect to the state of the rotor of the target device 30. Therefore, the user can easily confirm the state of the rotor of the target device 30 using the graph shown in FIG.
  • the Lpole parameter and the Lshaft parameter decrease as the motor condition deteriorates.
  • the Lpole parameter and the Lshaft parameter are parameters that change according to deterioration of different parts of the motor. Therefore, the user can guess the location where the abnormality has occurred in the motor by observing the inclination of the moving direction of the plot G3.
  • the user can use a graph relating to the KI parameter and Lpole parameter pair, a graph relating to the KI parameter and Lshaft parameter pair, and a KI parameter and Lx parameter pair. And a graph related to a pair of an IHD parameter and a THD parameter may be confirmed.
  • the user may check a graph relating to a pair of Lpole parameter and Lshaft parameter, a graph relating to a pair of KI parameter and Lx parameter, and a graph relating to a pair of IHD parameter and THD parameter.
  • the state analysis apparatus 10 includes the dividing line G2 representing the threshold value and the value of the current parameter in the coordinate space about each of the plurality of current parameters having a correlation with each other. Display information is generated in which a plot G3 representing the amount of change and an arrow G4 representing the amount of change in the value of the current parameter are arranged. Thereby, even if the user is not skilled in reading the frequency domain graph, the user can recognize how the state of the target device 30 is changed. As described above, according to the first embodiment, the user can also recognize a state other than the state associated with the individual current parameter. In another embodiment, the current parameter value may be represented by a graphic other than the plot G3.
  • the arrow G4 in the first embodiment is a graphic representing the amount of change in the current parameter, but since the arrow head indicates the value of the current parameter according to one timing, the arrow G4 also indicates the value of the current parameter. It can be said that it represents a figure.
  • the amount of change in the current parameter may be represented by a graphic other than the arrow G4.
  • the magnitude of the change amount of the current parameter may be displayed in a chart or may be represented by the color of the plot G3.
  • the state analysis device 10 generates display information including a predetermined message when at least one value of a plurality of parameters related to different timings crosses a threshold value. Thereby, the user can recognize immediately that the state of the object apparatus 30 changed.
  • the state analysis apparatus 10 changes the display form of the plot G3 depending on whether at least one value of a plurality of parameters related to different timings crosses the threshold value or does not cross the threshold value. May be. This also allows the user to quickly recognize that the state of the target device 30 has changed, as in the first embodiment.
  • the state analysis device 10 causes the display device 20 to display a graph related to a pair of current parameters, but is not limited thereto.
  • the state analysis device 10 may cause the display device 20 to display a high-dimensional graph relating to a set of three or more current parameters.
  • the state analysis apparatus 10 includes a dividing line G2 representing a threshold value and a plot G3 representing a current parameter value in a coordinate space with each of a plurality of current parameters having correlations as axes.
  • the display information in which is arranged is generated, but is not limited thereto.
  • the state analysis apparatus 10 may generate display information that represents a value of one current parameter related to one time and a change amount thereof. Even in such an embodiment, the user can recognize how the state of the target device 30 has changed.
  • the state analysis device 10 performs display control by outputting display information to the display device 20 directly connected to itself, but is not limited thereto.
  • the state analysis device 10 according to another embodiment transmits display information to a device that records display information in a storage medium without performing display control, or to another display device 20 connected via a network. May be.
  • the target device 30 is a rotating machine system in which a motor and an auxiliary machine rotate coaxially, but is not limited thereto.
  • a motor and an auxiliary machine may be connected via a mechanical system such as a gear device.
  • the state analysis device 10 classifies the state of the target device 30 into three categories of a normal state, an abnormal state, and a caution state, but is not limited thereto.
  • the state analysis apparatus 10 may be classified into two categories of a normal state and an abnormal state, or may be classified into four or more categories.
  • FIG. 10 is a schematic block diagram illustrating a configuration of a computer according to at least one embodiment.
  • the computer 90 includes a CPU 91, a main storage device 92, an auxiliary storage device 93, and an interface 94.
  • the state analysis apparatus 10 described above is mounted on the computer 90.
  • the operation of each processing unit described above is stored in the auxiliary storage device 93 in the form of a program.
  • the CPU 91 stores the program in the auxiliary storage device 9 3 is loaded into the main storage device 92, and the above processing is executed according to the program. Further, the CPU 91 secures a storage area corresponding to each of the storage units described above in the main storage device 92 according to the program.
  • auxiliary storage device 93 examples include an HDD (Hard Disk Drive), an SSD (Solid State Drive), a magnetic disk, a magneto-optical disk, a CD-ROM (Compact Disc Read Only Memory), and a DVD-ROM (Digital Versatile Disc Read Only. Memory), semiconductor memory, and the like.
  • the auxiliary storage device 93 may be an internal medium directly connected to the bus of the computer 90 or an external medium connected to the computer 90 via the interface 94 or a communication line. When this program is distributed to the computer 90 via a communication line, the computer 90 that has received the distribution may develop the program in the main storage device 92 and execute the above processing.
  • the auxiliary storage device 93 is a tangible storage medium that is not temporary.
  • the program may be for realizing a part of the functions described above. Further, the program may be a so-called difference file (difference program) that realizes the above-described function in combination with another program already stored in the auxiliary storage device 93.
  • difference file difference program
  • the state analysis device the display method, and the program according to the present application, the state of the target device and the change in the state can be easily identified.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Testing And Monitoring For Control Systems (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
  • Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)
  • Testing Relating To Insulation (AREA)
  • Control Of Electric Motors In General (AREA)
PCT/JP2018/003585 2017-02-06 2018-02-02 状態分析装置、表示方法、およびプログラム WO2018143404A1 (ja)

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CN201880009002.3A CN110235010B (zh) 2017-02-06 2018-02-02 状态分析装置、显示方法以及存储介质
KR1020197022705A KR102238869B1 (ko) 2017-02-06 2018-02-02 상태 분석 장치, 표시 방법, 및 프로그램
SG11201907246RA SG11201907246RA (en) 2017-02-06 2018-02-02 Condition analyzing device, display method, and program
PH12019501815A PH12019501815A1 (en) 2017-02-06 2019-08-06 Condition analying device, display method, and program

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JP2017019899A JP6793565B2 (ja) 2017-02-06 2017-02-06 状態分析装置、表示方法、およびプログラム

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JP2021196267A (ja) * 2020-06-15 2021-12-27 三菱パワー株式会社 予兆判定装置、予兆判定方法及びプログラム
KR102451079B1 (ko) * 2020-12-24 2022-10-06 주식회사 크로커스 전력 계통의 시각적 추상화 분석 방법

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JP6793565B2 (ja) 2020-12-02
KR102238869B1 (ko) 2021-04-09
TW201840990A (zh) 2018-11-16
KR20190100379A (ko) 2019-08-28
TWI683112B (zh) 2020-01-21
SG11201907246RA (en) 2019-09-27
PH12019501815A1 (en) 2020-09-14
CN110235010B (zh) 2021-10-15
JP2018128284A (ja) 2018-08-16

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