WO2011061793A1 - プロセス信号の抽出システムおよび方法 - Google Patents
プロセス信号の抽出システムおよび方法 Download PDFInfo
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- WO2011061793A1 WO2011061793A1 PCT/JP2009/006181 JP2009006181W WO2011061793A1 WO 2011061793 A1 WO2011061793 A1 WO 2011061793A1 JP 2009006181 W JP2009006181 W JP 2009006181W WO 2011061793 A1 WO2011061793 A1 WO 2011061793A1
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- process signal
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- 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
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0259—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the response to fault detection
- G05B23/0264—Control of logging system, e.g. decision on which data to store; time-stamping measurements
Definitions
- the present invention relates to a method and apparatus for efficiently extracting a process signal resulting from a change in the state of a plant using various information.
- process signals are monitored for stable plant operation. Specifically, the following measures are implemented for monitoring process signals.
- a measuring instrument for measuring pressure, temperature, flow rate, water level, etc. is installed in each part, and the obtained process signal value is displayed to the operator.
- the obtained process signal values are stored in a process computer, which is a dedicated computer, from the viewpoint of abnormality or failure countermeasures or maintenance.
- the operator displays the value of the corresponding process signal on the monitoring screen in order to check whether the value of the related process signal is also changed. If necessary, the past value of the corresponding process signal stored in the process computer is displayed on the monitoring screen.
- the plant operation control device and the monitoring device are integrated, and the plant state can be monitored and controlled in real time.
- the response method according to the change in the plant state that is, the extraction of the related process signal and the display operation of the value are defined in advance, and when there is a change in the corresponding plant state, the desired process signal is quickly There is a method of grasping the value of.
- Patent Document 1 the relevance of the process according to the state of the plant abnormality is investigated in advance, and this is registered as a knowledge database. This is a method of obtaining desired information by referring to this knowledge database when there is a plant abnormality.
- Patent Document 2 describes a method of using design information of equipment installed in a plant in order to identify an area of an abnormal target equipment.
- Patent Document 3 for each device installed in the plant, a table in which related process signals are registered is prepared. When a plant abnormality is detected, the target device is identified from the process signal and specified. A method for displaying a system diagram of the device on the screen is described. There is also a description of a method for displaying plant state data in the order of connection in the system diagram.
- Patent Document 1 since it is necessary to investigate in advance the relevance of the process according to the state of the plant abnormality and register it as a knowledge database, it is not possible to deal with other than plant abnormality registered in advance.
- Patent Document 2 although it is possible to specify the target device and the installation area of the device for the plant abnormality, the process signal has not been specified yet.
- An object of the present invention is to provide a system and method for extracting a plant signal that can cope with prior knowledge setting and unknown plant state changes and abnormalities, which are the above-mentioned problems.
- a monitoring control device that performs monitoring control based on the value of a measurement signal obtained when an operation signal is given to the monitoring target, and a process computer that stores the measurement signal obtained from the monitoring target
- An abnormality / prediction diagnosis device for diagnosing an abnormality or a sign based on the values of operation signals and measurement signals, a database storing design information of monitoring targets, and a diagnosis result obtained from the abnormality / prediction diagnosis device
- a process signal extraction apparatus having a function of extracting a process signal and a process signal extraction system including a monitor for displaying various information,
- the database stores the first design information stored in association with the measurement signal from the monitoring target and the mounting position of the detector, and the piping and equipment constituting the monitoring target in association with the upstream piping and equipment.
- the process signal extracting device refers to information on a database with respect to the measurement signal that has been diagnosed by the abnormality / prognosis diagnosis device as to an abnormality / prediction, and an upstream pipe or device adjacent to the detector mounting position, and the upstream It is obtained by associating it with the measurement signal from the detector installed in the pipe or equipment on the side and displaying it on the monitor.
- the process signal extraction device traces the upstream side adjacent to the detector mounting position of the measurement signal that has diagnosed the abnormality / prediction to the equipment, and the upstream pipe and the upstream pipe in the meantime. It is preferable to obtain the measurement signal from the installed detector in association with the measurement signal.
- the process signal extraction device should display on the monitor the result of weighted evaluation of the measurement signal obtained up to the upstream device.
- the process signal extraction device may change the weighting according to the number of the adjacent upstream piping when performing the weighting evaluation on the measurement signal obtained up to the upstream device. .
- the process signal extraction device may change the weighting when the measurement type of the measurement signal is the same as when the measurement type of the measurement signal is different when performing the weighting evaluation on the measurement signal obtained until reaching the upstream device. good.
- the process signal extraction device may change the weighting according to the presence or absence of branching of the pipe when performing the weighting evaluation on the measurement signal obtained up to the upstream device.
- the means for extracting the plant process signal comprises: The first design information stored in association with the measurement signal from the plant and the mounting position of the detector, and the second design information stored in association with the upstream and downstream pipes and devices of the piping and devices constituting the plant.
- Design information and When diagnosing abnormalities and signs of measurement signals refer to the first and second design information, and connect the upstream piping and equipment adjacent to the detector mounting position to the upstream piping and equipment. It is obtained by associating with the measurement signal from the installed detector.
- the means for extracting the process signal of the plant is: The upstream side adjacent to the detector mounting position of the measurement signal that diagnosed abnormalities and signs is traced to the equipment, and measurement is performed from the upstream piping and the detector installed in the upstream piping during this period. It is good to obtain it in association with the signal.
- the means for extracting the process signal of the plant is: It is preferable to display the result of weighted evaluation of the measurement signal obtained up to the upstream device.
- the means for extracting the process signal of the plant is: When performing the weighting evaluation on the measurement signal obtained until reaching the upstream device, it is preferable to change the weighting according to the number of the adjacent upstream piping.
- the means for extracting the process signal of the plant is: When performing the weighting evaluation on the measurement signal obtained before reaching the upstream device, it is preferable to change the weighting depending on whether the measurement type of the measurement signal is the same or different.
- the means for extracting the process signal of the plant is: When performing the weighting evaluation on the measurement signal obtained before reaching the upstream device, it is preferable to change the weighting according to the presence or absence of branching of the piping.
- the means for extracting the plant process signal comprises: The first design information stored in association with the measurement signal from the plant and the mounting position of the detector, and the second design information stored in association with the upstream and downstream pipes and devices of the piping and devices constituting the plant.
- the means for extracting the process signal of the plant is: It is preferable that the upstream pipe and device obtained in association with the measurement signal at that position are traced up to the upstream device and obtained as weighted information.
- a process signal to be monitored or confirmed can be quickly presented to an operator or maintenance staff, which can contribute to stable operation of a power plant or an industrial plant.
- FIG. 6 is a diagram showing “piping connection information” as first design information stored in the design information database 500.
- FIG. It is the figure which showed "the style of piping” as the 2nd design information memorize
- FIG. 10 is a diagram showing a “device list” as third design information stored in the design information database 500.
- FIG. 10 is a diagram showing a “measurement point list” as the fourth design information stored in the design information database 500. It is a figure which shows the flowchart of the algorithm which extracts the process signal which concerns based on input information. It is the figure which put together the relationship between the apparatus number or line number calculated
- FIG. 10 it is the figure which put together the calculation result in each process of calculating
- FIG. 10b it is the figure which put together the calculation result in each process of calculating
- FIG. It is an initial screen displayed on an image display apparatus. It is an extraction condition setting screen displayed on the image display device. It is a display information setting screen displayed on an image display device. It is a trend graph of a process signal displayed on an image display device.
- FIG. 1 is a diagram showing an example in which the plant signal extraction method and apparatus according to the present invention is applied to a power plant 100 that is one of the objects. Many measuring instruments are installed in the power plant 100 in order to grasp the state of the plant. The value of the process signal 10 measured by each measuring instrument is transmitted to the monitoring control device 200 and the process computer 300 that stores the measured value using a dedicated line or a general-purpose transmission line.
- the monitoring control device 200 outputs a control signal 20 for keeping the plant operation in a desired state based on the value of the process signal 10.
- the output control signal 20 is input to the power plant 100 and also to the abnormality / prognosis diagnosis device 400. Moreover, in order to show a user the signal value regarding control of a plant, it inputs into the support tool 910.
- FIG. 1 A block diagram illustrating an exemplary computing environment in accordance with the present in the process signal 10.
- the value of the process signal 10 obtained from the power plant 100 is accumulated.
- the accumulated process signal 10 is output as the process signal 30 to the abnormality / predictive diagnosis device 400 and the support tool 910 according to the application.
- the storage format will be described in detail later.
- the abnormality / prognosis diagnosis device 400 detects a plant abnormality or a sign thereof based on changes or trends in the input control signal 20 and process signal 30. There are various methods described below for detecting a plant abnormality or its sign, and any method can be adopted in the present invention.
- the detection method may use statistical analysis such as average or standard deviation, correlation coefficient, principal component analysis, etc., from determining whether the difference from the previous value deviates from a certain range. Detect abnormalities and signs by predicting changes in process values using physical models and statistical models, estimate normal process values, and detect abnormalities and signs based on differences from the estimated values There is also a technique. There is also a method of classifying the normal operation state of a plant into a plurality of categories and detecting an abnormality or a sign with a state separated from the category or a state classified into a new category.
- statistical analysis such as average or standard deviation, correlation coefficient, principal component analysis, etc.
- the abnormality / prediction diagnosis apparatus 400 may employ any of the above-described methods. However, when an abnormality or a sign is detected, a single or a plurality of process signals related to the event are extracted, and the support tool 910 is obtained as the diagnosis result 40. Output to.
- the information of the process signal refers to a number or a signal name uniquely given to the process signal. Also, the presence / absence of weight and influence level information varies depending on the diagnostic technique implemented by the abnormality / predictor diagnosis apparatus 400.
- diagnosis result 40 there are a case where the information is only the specification of the process signal and a case where the information indicating the influence or degree of influence on the detected abnormality or sign is detected for the specified process signal. In the following description, both are included in the diagnosis result 40, and the difference in the realization method caused by the difference will be described each time.
- the design information database 500 stores design information related to the power plant 100 equipment.
- design information a pipe instrumentation diagram in which position information of devices constituting the power plant 100, piping connecting them, and measuring instruments installed to extract the plant signal 10 is described will be described. To do.
- This piping instrumentation diagram is generally drawn using a dedicated CAD, and the drawing is generally stored as CAD data.
- the CAD data is provided with attributes of equipment and piping specifications and identification numbers (hereinafter referred to as ID numbers) for specifying each part as attributes. Therefore, when the device or piping number is designated, it is possible to extract the position on the drawing or the specifications of the object, for example, the diameter or thickness of the piping. Furthermore, connection information with the both ends can be acquired about piping.
- Various design information 50 stored in the design information database is output to the process signal extraction device 600 and the maintenance tool 910 as necessary. Details of the design information recorded in the design information database 500 will be described later in detail with reference to FIGS.
- the process signal extraction device 600 includes an external input interface 610, a signal extraction unit 620, and an external output interface 630.
- the process signal extraction apparatus 600 obtains an input signal 60 necessary for extracting a process signal via the maintenance tool 910.
- the external input interface 610 takes in the input signal 60 obtained via the maintenance tool 910 and the design information 50 from the design information database 500 and transmits it as signal extraction information 61 to the signal extraction unit 620.
- the signal extraction unit 620 extracts other process signal candidates related to the process signal specified by the abnormality / predictive diagnosis device 400 based on the input signal extraction information 61.
- the extraction result 62 is output to the external output interface 630.
- the algorithm for obtaining the extraction result 62 based on the signal extraction information 61 will be described later in detail with reference to the flowchart of FIG.
- the extraction result 62 obtained from the signal extraction unit 620 is output to the support tool 910 as the output result 63.
- a user involved in the power plant 100 uses an input device 900 composed of a keyboard 901 and a mouse 902, and a support tool 910 connected to an image display device 950.
- Various information regarding the power plant 100 can be viewed.
- the user related to the power plant 100 includes a control signal 20 from the monitoring control device 200, a process signal 30 from the process computer 300, a diagnosis result 40 from the abnormality / predictor diagnosis device 400, and design information 50 from the design information database 500.
- the information of the output result 63 from the process signal extraction device 600 can be accessed.
- the support tool 910 includes an external input interface 920, a data transmission / reception processing unit 930, and an external output interface 940.
- the external input interface 920 takes the input signal 91 generated by the user related to the power plant 100 with the input device 900 as the signal 92 into the data transmission / reception processing unit 930 in the support tool 910.
- the external input interface 920 includes a control signal 20 from the monitoring control device 200, a process signal 30 from the process computer 300, a diagnosis result 40 from the abnormality / predictive diagnosis device 400, design information 50 from the design information database 500, a process.
- the output result 63 from the signal extraction device 600 is captured as a signal 92 into the data transmission / reception processing unit 930 in the support tool 910.
- the data transmission / reception processing unit 930 processes the input signal 92 according to the information of the input signal 91 from the user, and transmits it as the output signal 93 to the external output interface 940.
- the output signal 94 is displayed on the image display device 950.
- FIG. 2 is a diagram illustrating a thermal power plant. First, the mechanism of power generation in a thermal power plant will be described.
- coal When coal is used as fuel, coal is supplied to the mill 110 via a coal feeder 112 from a coal bunker 111 that stores coal.
- the coal In the mill 110, the coal is crushed into fine pulverized coal by an internal roller.
- the pulverized coal, primary air for transporting coal, and secondary air for combustion adjustment are supplied to the boiler 101 via the burner 102.
- the pulverized coal and the primary air are led from the pipe 134 and the secondary air is led from the pipe 141.
- after-air for two-stage combustion is introduced into the boiler 101 via the after-air port 103.
- the after air is guided from the pipe 142. Hot gas generated by the combustion of coal flows along the path of the boiler 101 and then passes through the air heater 104. Then, after exhaust gas treatment, it is emitted to the atmosphere through a chimney.
- the feed water circulating through the boiler 101 is guided to the boiler 101 via the feed water pump 105 and is heated by the gas in the heat exchanger 106 to become high-temperature and high-pressure steam.
- the number of heat exchangers is one, but a plurality of heat exchangers may be arranged.
- the high-temperature and high-pressure steam that has passed through the heat exchanger 106 is guided to the steam turbine 108 via the turbine governor 107.
- the steam turbine 108 is driven by the energy of the steam, and the generator 109 generates power.
- the exhaust gas from the steam turbine 108 is cooled by the condenser 113 and sent to the feed water pump 105 again.
- a device for heating the feed water is arranged by using the air extracted from the turbine to improve the thermal efficiency.
- FIG. 2 illustrates a flow rate measuring device 150, a temperature measuring device 151, a pressure measuring device 152, a power generation output measuring device 153, and a concentration measuring device 154.
- the flow rate measuring device 150 measures the flow rate of the feed water supplied from the feed water pump 105 to the boiler 101.
- the temperature measuring device 151 and the pressure measuring device 152 measure the temperature and pressure of the steam supplied to the steam turbine 108.
- the amount of power generated by the power generator 109 is measured by a power generation output measuring device 153.
- concentration measuring device 154 Information on the concentration of components (CO, NOX, etc.) contained in the gas passing through the boiler 101 can be measured by the concentration measuring device 154.
- concentration measuring devices 154 In general, many measuring instruments other than those shown in FIG. 2 are arranged in the thermal power plant, but are omitted in FIG.
- the primary air is guided from the fan 120 to the pipe 130, branched into a pipe 132 that passes through the air heater 104 and a pipe 131 that does not pass through, and merges again in the pipe 133 and is guided to the mill 110.
- the air passing through the air heater 104 is overheated by the gas. Using this primary air, pulverized coal generated in the mill 110 is conveyed to the burner 102.
- the secondary air and the after air are led from the fan 121 to the pipe 140 and heated by the air heater 104, and then branched into a secondary air pipe 141 and an after air pipe 142, respectively, and the burner 102 and the after air, respectively. Guided to the airport 103.
- FIG. 3 is a diagram showing two typical examples of the above-described thermal power plant equipment and piping system, and the following description of the present invention will be described by taking this equipment and piping system as an example.
- a pipe A001-001 is provided upstream of the equipment K001
- a pipe A001-002 is provided upstream thereof
- a T-branch T001 which is a kind of equipment, is provided upstream thereof.
- temperature detectors T001, T011, and T012 are provided in the device K001, the pipe A001-001, and the pipe A001-002, respectively.
- PID024, PID023, and PID022 are assigned as process ID numbers to the process signals taken from each temperature detector into the process computer 300 or the monitoring control apparatus 200.
- the pressure detector P001 is installed in the upstream pipe B003-001 of the equipment K011, the pipe B003-002 is located upstream of the pipe B003-001, and one of the equipment is further upstream. A kind of ladysa R023 is provided.
- the pipe B003-001 is provided with a pressure detector P001, and PID003 is assigned as the process ID number.
- FIG. 4 is a diagram for explaining the mode of information stored in the process computer 300.
- information measured by the power plant 100 is written in the horizontal column for each measuring instrument and stored together with each measurement time in the vertical column.
- the NOx concentration D contained in the exhaust gas is stored together with the time passage information.
- the time axis on the vertical axis stores data at a cycle of 1 second, but the sampling cycle of data collection can be arbitrarily set.
- a unique number called a PID number is assigned to each measurement value so that the data stored in the process computer 300 can be easily used. Based on this PID number, it is used as a key for specifying a process signal or searching for a desired process signal.
- the PID numbers of the flow rate value F, temperature value T, pressure value P, power generation output value E, and NOX concentration D are defined as PID150, PID151, PID152, PID153, and PID154.
- FIG. 5 is a diagram showing “piping connection information” as the first design information.
- each pipe stores a line number, a pipe name, and a connection destination in association with each other.
- the connection destination represents the connection destinations at both ends of the pipe, the upstream side of the fluid flowing in the pipe is FROM, and the downstream side is TO, and each information is stored.
- the upstream connection destination is A001-002
- the downstream connection destination is K001.
- the upstream connection destination is T001
- the downstream connection destination is A001-001.
- the upstream connection destination is B003-002
- the downstream connection destination is K011
- the upstream connection destination is R023
- the downstream connection destination is B003-001. This connection relationship is shown in FIG. 3b, and it can be seen that R023, B003-002, B003-001, and K011 are sequentially provided from the upstream side.
- K001 and K011 are various devices laid in the plant, T001 is a T-branch that is connected when a device or a pipe is branched, and R023 is used when a pipe having a different diameter is connected. Ladysa. Information regarding these devices will be described later with reference to FIG.
- the piping format is information such as piping ID number, name, type, diameter, wall thickness, heat insulation material thickness and clearance with other equipment or piping, and these are described as connection information of the design information database 500. ing.
- the pipe ID number is line number A001-001
- the name is pipe A1-1
- the type is 001
- the diameter is 500
- the wall thickness is 50
- the heat insulation material thickness is 50
- the clearance is 50.
- the coordinates of the start point and end point specified by the user are included, they are not shown here.
- FIG. 7 shows an “apparatus list” representing information formats of various apparatuses connected to the piping, such as apparatuses, T-branches, and readyers. .
- This information is information on the devices (K001, K011, T001, R023) described in the upstream (FROM) and downstream (TO) columns of the connection destinations at both ends of the pipe in FIG.
- FROM upstream
- TO downstream
- size information there is size information.
- the device number K001 means that the device name is device 001
- the device number T001 is T branch T001
- the device number R001 means that the device name is readya 001.
- the number of size information defined differs depending on the target device.
- the device number for example, by defining an initial character corresponding to the type, the efficiency at the time of search and the ease of visibility by the user are ensured.
- FIG. 8 shows a “measurement point list” representing information of measuring instruments connected to pipes and devices.
- the measurement point list includes a measurement point number for identifying the measuring instrument, a measurement point name corresponding to the measurement point name, a PID number (process ID number) assigned to the process signal to be measured, and the type of the measurement target object to be measured. And a mounting position where a device number or a line number for identifying an object to be mounted is described.
- the measurement point number is generally assigned the first character according to the type being measured.
- P is used as a measurement point for measuring pressure
- T is used as a measurement point for measuring temperature
- F is used as a measurement point for measuring flow rate.
- L there are other measurement points “L” for measuring the level.
- the measurement point number P001 in the measurement point list of FIG. 8 is attached to the pipe B003-001, the measurement target fluid is water, the PID number is PID003, and the measurement point name is pressure 001. It can be seen that this is a pressure detector.
- the measurement point number T001 is a temperature detector that is attached to the device K001, the measurement target fluid is air, the PID number is PID024, and the measurement point name is temperature 001.
- the measurement point number F001 is a flow rate detector attached to the pipe B006-002, the measurement target fluid is water, the PID number is PID054, and the measurement point name is the flow rate 001.
- the measurement point number T011 is a temperature detector attached to the pipe A001-001, the measurement target fluid is air, the PID number is PID023, the measurement point name is the temperature 011, and the measurement point number T012 Is a temperature detector attached to the pipe A001-002, the measurement target fluid is air, the PID number is PID022, and the measurement point name is temperature 012.
- FIG. 3a in addition to the connection state of the piping and equipment, information of these measurement point lists is also displayed. That is, in FIG. 3a, the temperature detector with the measurement point number T001 and PID number PID024 is attached to the attachment position of the device K001, and the temperature detector with the measurement point number T011 and PID number PID023 is attached to the attachment position of the pipe A001-001. Temperature detectors with measurement point number T012 and PID number PID022 are displayed at the attachment position of -002. Further, in FIG. 3b, pressure detectors with measurement point numbers P011 and PID numbers PID003 are displayed at the attachment positions of the pipes B003-001.
- the signal extraction unit 620 extracts other signals related to the signal included in the diagnosis result 40 extracted by the abnormality / predictive diagnosis device 400 based on the signal extraction information 61 from the external input interface 610.
- the signal extraction signal 61 includes a diagnosis result 40 and design information 50 from the design information database 500 via the maintenance tool 910.
- FIG. 9 shows a flowchart of an algorithm for extracting related process signals based on these input information.
- step S801 the diagnosis result 40 in the abnormality / predictive diagnosis device 400 is referred to.
- the diagnosis result 40 basically follows the format of the signal 30 (FIG. 4) taken into the process computer 300, and therefore includes the PID number of the measurement signal, which is a unique number for each measurement point.
- step S801 the measurement point list of FIG. 8 is first referred to from the information of FIGS. 5, 6, 7, and 8 stored in the design information database 500, and measurement is performed from the measurement point number corresponding to the PID number.
- the type of the object to be measured is obtained from the measurement target, and the information on the attachment device is obtained from the attachment position.
- step S801 of FIG. 8 it is assumed that the process signal that has detected an abnormality is the PID number PID024 in the case of FIG. 3a and the PID number PID003 in the case of FIG. 3b.
- step S802 it is determined whether the type of mounting position is piping or other.
- the mounting position is the device in the case of FIG. 3a and the mounting position B003 in the case of FIG. It can be determined from the 001 information because the mounting position is a pipe. For this purpose, for example, if the pipe is “A” or “B” and the equipment is “K”, “T”, “R”, etc. Easy to distinguish.
- step S803 the process proceeds to step S803, and when it is not piping, the process proceeds to step S807. Accordingly, in the case of FIG. 3a, the process proceeds to step S807, and in the case of FIG. 3b, the process proceeds to step S803.
- step S803 the abnormality-detecting measuring instrument is provided in the pipe.
- step S806 an upstream device is found.
- connection information before and after the attachment target is acquired from the piping list of FIG. Specifically, attention is paid to the attachment position B003-001 as information related to the PID number PID003 of FIG. 8 acquired in step S801, and this information is searched from the line number column of the piping list of FIG. As a result, the required information B003-001 is obtained at the position of the line number in the Nth row.
- step S804 the pipe connected upstream from the line number is searched. Specifically, the device number B003-002 in the FROM item of the line (N) of the line number B003-001 searched in the previous step S803 is acquired. That is, information on the upstream device number is acquired.
- step S805 the connection relation is traced upstream from the piping list in FIG. That is, the line number column having the upstream device number B003-002 searched in the previous step S804 is searched, and B003-002 is detected in the line number column of the (N + 1) th row.
- step S806 it is determined whether the device number in the FROM of the row detected in step S805 (N + 1 row storing B003-002 in the line number column) is a line number. Returning to S805, the follow-up investigation is performed until the line number is different, that is, until the device is obtained. If it is not a line number, the type of the connected device is acquired based on the first character of the device number, and the process proceeds to step S809. In this example, since the readyr R023, which is one type of device, is obtained as the device number in the FROM in the column of the line number B003-002 in the N + 1th row, the process proceeds to step S809. In this case, the readya information is acquired and stored as the type of the connected device.
- step S802 is a device
- the processing of steps S807, S808, S805, and S806 will be executed.
- the processing is the same as the processing of step S803 described above. Then, the process of finding the upstream device is executed.
- step S807 the type connected in the device list is acquired based on the device number obtained in previous step S801, and the process proceeds to step S808.
- the device obtained as the determination result in step S802 is K001 in this example.
- step S808 the line number connected to the upstream side is searched based on the device number K001. That is, a line storing the device number K001 is searched in the TO column of the piping list in FIG. 5, the information is obtained in the first line, and the description in the line number column is referred to. In this case, A001-001 is obtained in the line number column.
- the process proceeds to step S805, and if not, the process proceeds to step S809.
- step S805 The process when the process proceeds to step S805 is as described above.
- the device number A001-002 in the FROM item of the first row describing the line number A001-001 in FIG. 5 is acquired.
- step S806 since A001-002 is a pipe, the process returns to step S805 again, and reaches the second line in which A001-002 is described in the column of TO.
- the device number T001 is obtained in the FROM item of the second row, and the process proceeds to step S809 in the process of step S806.
- step S809 if there are a plurality of signals (abnormality detection signals) included in the diagnosis result 40, it is determined whether or not the processing so far has been executed for all signals. If extraction processing has not been completed for all signals, the process returns to step S801, and step S is advanced for signals that have not been subjected to extraction processing. If all have been completed, the process proceeds to step S810. In the case of this case, the process proceeds to step S810 with the completion of the study on the case of FIG. 3a and the case of FIG. 3b.
- step S810 related process signals are listed based on the connection relationship extracted in the previous steps.
- the device numbers or line numbers extracted based on the connection relationship are arranged in the order of extraction, and the PID numbers are extracted using the mounting position of the measurement point list as a key.
- FIG. 10a and 10b are lists that summarize the relationship between the PID number and the device number or line number required in the case of FIG. 3a, the case of FIG. 3b. Needless to say, this list is obtained with reference to FIGS.
- the device number K001 is extracted in step S801 using the abnormality detection of PID024 as a PID number as a trigger.
- the line numbers A001-001, A001-002, and the device number T001 are sequentially extracted.
- FIG. 10a is created by constructing the left column for each order, further referring to the PID numbers sequentially from the mounting positions in FIG. This can be done in the same way in the case of FIG.
- step S811 the relevance R of the extracted signal is calculated based on the information so far.
- the relevance R is finally obtained by the following equation (4), but before that, the equations (1) to (3) are executed.
- M is the total value of the device number or line number extracted for one process signal.
- the total value M of the device numbers or line numbers extracted for one process signal PID024 is 4.
- the total value M of the device numbers or line numbers extracted for one process signal PID003 is 3.
- FIG. 11 summarizes the calculation results in each process of obtaining the degree of relevance R on the display of FIG. 10, and in FIGS. 11a and 11b, N and M are written in the left column. In addition, the weighting factor ⁇ in each column is described on the right side. In this way, the weight ⁇ is larger for the device number or line number extracted first.
- the weight ⁇ is set depending on whether the measurement target of the signal of the diagnosis result 40 is the same as the measurement target extracted from the measurement point number corresponding to the extracted device number or PID number.
- the weight ⁇ shown in the equation (3) is set, and the weight is changed on the upstream side and the downstream side of a device that branches into a plurality of branches such as a T branch.
- the relevance R is calculated by the formula shown in Formula (4).
- FIG. 11a or FIG. 11b is a result obtained with the plant configuration of FIG. 3a or FIG. 3b.
- the temperature detectors installed in the device number K001 in the signals (PID numbers PID023 and PID022) from the temperature detectors installed in the line numbers A001-001 and A001-002 are shown.
- Information of the degree of association R with the signal (PID number is PID024) is obtained. That is, when the PID 024 detects an abnormality, the cause is considered to be on the upstream side, and effective information for investigating the cause can be obtained by investigating the relationship with the upstream detector.
- the weighting coefficient ⁇ is set because the correlation is lowered as the distance from the abnormality detection point increases.
- step S812 it is determined whether or not the diagnosis result 40 has a weight such as importance. If there is, a correction value obtained by multiplying the weight by the relevance R calculated in step S811 is calculated in step S813, and the process ends. If not, the process ends.
- the weighting and relevance calculation shown here are examples, and other times, integer multiples may be used for weighting. Further, the relevance may be calculated by adding the respective weights.
- the obtained extraction list 62 is output to the external output interface 630.
- the extraction list 62 is sent to the support tool 910 as the output result 63.
- . 12 to 15 are examples of screens displayed on the image display device 950.
- the user performs an operation such as inputting a parameter value in a blank area of these screens using the keyboard 901 and the mouse 902 of FIG.
- FIG. 12 shows an initial screen displayed on the image display device 950.
- the user selects a necessary button from the extraction condition setting button 951 and the information display button 952, moves the cursor 953 using the mouse 902, and clicks the mouse 902, thereby clicking the extraction condition setting button 951 and the information display.
- One of the buttons 952 is pressed.
- FIG. 13 is a diagram for explaining a screen (screen for setting extraction conditions) displayed when the extraction condition setting button 951 is pressed.
- the weight setting field 961 displays update / deletion, PID, measurement target (W), and branch (B).
- the radio buttons In the update / delete column, use the radio buttons to set the selection for updating or deleting the weight setting value.
- the PID column the PID number of the target process signal is set. Or, if it is desired to set as default, D is designated. If both exist, the value set in D is set except for the designated PID number.
- the values of the weighting coefficients of the expressions (2) and (3) are set. If an item is to be set, it can be added by pressing the add button 962. After all the settings have been made, the decision button 963 is pressed to confirm.
- update / deletion a selection for updating or deleting the weight setting value is set by a radio button.
- PID column the PID number of the target process signal is set. Or, if it is desired to set as default, D is designated. If both exist, the value set in D is set except for the designated PID number.
- FIG. 14 is a screen for displaying various information on the image display device 950.
- the information display button 952 is clicked to display FIG.
- the user inputs a measurement signal or an operation signal to be displayed on the image display device 950 together with its range (upper / lower limit) to the input field 981.
- the time to be displayed is input in the time input field 982.
- any one of process name, extraction signal, PID, measurement point number, equipment number, and piping number is input and the display button 985 is clicked, thereby design information in which the corresponding information is described. Are retrieved from the design information database 500 and displayed.
- the extraction information display field 986 displays the process name, PID, the extracted extracted signal name, and the degree of association.
- the user can investigate the cause and acquire new knowledge while observing the relationship between the cause of the abnormality and the spillover in chronological order while viewing the presented information.
- the upstream piping and equipment are traced based on the measuring instrument and signal that detected the abnormality at the time of abnormality, and the signals from the various detectors installed there It is possible to investigate the cause and acquire new knowledge by providing the user with weighting.
- a related process signal is automatically extracted from various process signals and design information in consideration of the configuration of the corresponding plant. Therefore, it is possible to shorten the time from the occurrence of an abnormality or a sign to the countermeasure or cause investigation. As a result, measures can be taken before the tendency of abnormalities and signs increases.
Abstract
Description
特許文献2に記載されている方法では、プラント異常に対する対象機器とその機器の設置エリアを特定することは可能であるが、プロセス信号を特定するには至っていない。
データベースは、監視対象からの計測信号とその検出器の取付位置とを関連付けて記憶する第1の設計情報と、監視対象を構成する配管や機器について、その上流の配管や機器と関連付けて記憶する第2の設計情報とを含み、
プロセス信号抽出装置は、前記異常・予兆診断装置が異常・予兆を診断した前記計測信号について、データベースの情報を参照してその検出器の取付位置に隣接する上流側の配管や機器と、当該上流側の配管や機器に設置された検出器からの計測信号とを関連付けて得、モニタに表示する。
プラントからの計測信号とその検出器の取付位置とを関連付けて記憶する第1の設計情報と、プラントを構成する配管や機器について、その上流、下流の配管や機器と関連付けて記憶する第2の設計情報とを有し、
計測信号について、異常・予兆を診断したときに、第1と第2の設計情報を参照してその検出器の取付位置に隣接する上流側の配管や機器と、当該上流側の配管や機器に設置された検出器からの計測信号とを関連付けて得る。
異常・予兆を診断した計測信号の検出器の取付位置に隣接する上流側について、機器に至るまで追跡し、この間の上流側の配管と、当該上流側の配管に設置された検出器からの計測信号とを関連付けて得るのが良い。
上流側機器に至るまでの間に得られた計測信号について、重み付け評価した結果を表示するのがよい。
上流側機器に至るまでの間に得られた計測信号について重み付け評価を行なうときに、隣接する上流側の何番目の配管かに応じて重み付けを変更するのが良い。
上流側機器に至るまでの間に得られた計測信号について重み付け評価を行なうときに、計測信号の計測種別が同じ場合と相違する場合とで重み付けを変更するのがよい。
上流側機器に至るまでの間に得られた計測信号について重み付け評価を行なうときに、配管の分岐の有無に応じて重み付けを変更するのが良い。
プラントからの計測信号とその検出器の取付位置とを関連付けて記憶する第1の設計情報と、プラントを構成する配管や機器について、その上流、下流の配管や機器と関連付けて記憶する第2の設計情報とを有し、
計測信号について異常・予兆を診断したときに、異常・予兆を診断した前記計測信号の検出器の取付位置を第1の設計情報から求め、
当該取付位置の配管や機器について第2の設計情報を参照し、隣接する上流側の配管や機器の情報を得、
得られた上流側の配管や機器に取付けられた検出器からの計測信号を第1の設計情報から求め、
上流側の配管や機器と、その位置での計測信号を関連付けて得る。
関連付けて得る上流側の配管や機器と、その位置での計測信号について、上流側の機器に至るまで追跡し、計測信号に重み付けをした情報として得るのがよい。
図12~図15は、画像表示装置950に表示される画面の実施例である。ユーザーは、図1のキーボード901、マウス902を用いてこれら画面の空欄となっている箇所にパラメータ値を入力するなどの操作を実行する。
200 監視制御装置
300 プロセス計算機
400 異常・予兆診断装置
500 設計情報データベース
600 プロセス信号抽出装置
610 外部入力インターファイル
620 信号抽出部
630 外部出力インターフェイス
900 入力装置
901 キーボード
902 マウス
910 支援ツール
920 外部入力インターフェイス
930 データ送受信処理部
940 外部出力インターフェイス
950 画像表示装置
Claims (14)
- 監視対象に操作信号を与えた時に得られる計測信号の値をもとに監視制御する監視制御装置と、前記監視対象から得られる計測信号を記憶するプロセス計算機と、前記操作信号および計測信号の値をもとに異常や予兆を診断する異常・予兆診断装置と、前記監視対象の設計情報を蓄積したデータベースと、前記異常・予兆診断装置から得られる診断結果に対し関連するプロセス信号を抽出する機能を有するプロセス信号抽出装置と、各種情報を表示するモニタを含
むプロセス信号の抽出システムであって、
前記データベースは、前記監視対象からの計測信号とその検出器の取付位置とを関連付けて記憶する第1の設計情報と、前記監視対象を構成する配管や機器について、その上流の配管や機器と関連付けて記憶する第2の設計情報とを含み、
前記プロセス信号抽出装置は、前記異常・予兆診断装置が異常・予兆を診断した前記計測信号について、前記データベースの情報を参照してその検出器の取付位置に隣接する上流側の配管や機器と、当該上流側の配管や機器に設置された検出器からの計測信号とを関連付けて得、前記モニタに表示することを特徴とするプロセス信号の抽出システム。 - 請求項1記載のプロセス信号の抽出システムにおいて、
前記プロセス信号抽出装置は、異常・予兆を診断した計測信号の検出器の取付位置に隣接する上流側について、機器に至るまで追跡し、この間の上流側の配管と、当該上流側の配管に設置された検出器からの計測信号とを関連付けて得ることを特徴とするプロセス信号の抽出システム。 - 請求項2記載のプロセス信号の抽出システムにおいて、
前記プロセス信号抽出装置は、上流側機器に至るまでの間に得られた計測信号について、重み付け評価した結果を前記モニタに表示することを特徴とするプロセス信号の抽出システム。 - 請求項3記載のプロセス信号の抽出システムにおいて、
前記プロセス信号抽出装置は、上流側機器に至るまでの間に得られた計測信号について重み付け評価を行なうときに、隣接する上流側の何番目の配管かに応じて重み付けを変更することを特徴とするプロセス信号の抽出システム。 - 請求項3記載のプロセス信号の抽出システムにおいて、
前記プロセス信号抽出装置は、上流側機器に至るまでの間に得られた計測信号について重み付け評価を行なうときに、計測信号の計測種別が同じ場合と相違する場合とで重み付けを変更することを特徴とするプロセス信号の抽出システム。 - 請求項3記載のプロセス信号の抽出システムにおいて、
前記プロセス信号抽出装置は、上流側機器に至るまでの間に得られた計測信号について重み付け評価を行なうときに、配管の分岐の有無に応じて重み付けを変更することを特徴とするプロセス信号の抽出システム。 - 複数の配管と、機器で構成され、適宜の配管や機器に計測器を設置して計測信号を得るようにされたプラントのプロセス信号の抽出方法において、
プラントのプロセス信号を抽出する手段は、
前記プラントからの計測信号とその検出器の取付位置とを関連付けて記憶する第1の設計情報と、前記プラントを構成する配管や機器について、その上流、下流の配管や機器と関連付けて記憶する第2の設計情報とを有し、
前記計測信号について、異常・予兆を診断したときに、前記第1と第2の設計情報を参照してその検出器の取付位置に隣接する上流側の配管や機器と、当該上流側の配管や機器に設置された検出器からの計測信号とを関連付けて得ることを特徴とするプロセス信号の抽出方法。 - 請求項7記載のプロセス信号の抽出方法において、
前記プラントのプロセス信号を抽出する手段は、
異常・予兆を診断した計測信号の検出器の取付位置に隣接する上流側について、機器に至るまで追跡し、この間の上流側の配管と、当該上流側の配管に設置された検出器からの計測信号とを関連付けて得ることを特徴とするプロセス信号の抽出方法。 - 請求項7記載のプロセス信号の抽出方法において、
前記プラントのプロセス信号を抽出する手段は、
前記の上流側機器に至るまでの間に得られた計測信号について、重み付け評価した結果を表示することを特徴とするプロセス信号の抽出方法。 - 請求項7記載のプロセス信号の抽出方法において、
前記プラントのプロセス信号を抽出する手段は、
前記上流側機器に至るまでの間に得られた計測信号について重み付け評価を行なうときに、隣接する上流側の何番目の配管かに応じて重み付けを変更することを特徴とするプロセス信号の抽出方法。 - 請求項7記載のプロセス信号の抽出方法において、
前記プラントのプロセス信号を抽出する手段は、
前記上流側機器に至るまでの間に得られた計測信号について重み付け評価を行なうときに、計測信号の計測種別が同じ場合と相違する場合とで重み付けを変更することを特徴とするプロセス信号の抽出方法。 - 請求項7記載のプロセス信号の抽出方法において、
前記プラントのプロセス信号を抽出する手段は、
前記上流側機器に至るまでの間に得られた計測信号について重み付け評価を行なうときに、配管の分岐の有無に応じて重み付けを変更することを特徴とするプロセス信号の抽出方法。 - 複数の配管と、機器で構成され、適宜の配管や機器に計測器を設置して計測信号を得るようにされたプラントのプロセス信号の抽出方法において、
プラントのプロセス信号を抽出する手段は、
前記プラントからの計測信号とその検出器の取付位置とを関連付けて記憶する第1の設計情報と、前記プラントを構成する配管や機器について、その上流、下流の配管や機器と関連付けて記憶する第2の設計情報とを有し、
前記計測信号について異常・予兆を診断したときに、異常・予兆を診断した前記計測信号の検出器の取付位置を第1の設計情報から求め、
当該取付位置の配管や機器について第2の設計情報を参照し、隣接する上流側の配管や機器の情報を得、
得られた上流側の配管や機器に取付けられた検出器からの計測信号を第1の設計情報から求め、
上流側の配管や機器と、その位置での計測信号を関連付けて得ることを特徴とするプロセス信号の抽出方法。 - 請求項13記載のプロセス信号の抽出方法において、
前記プラントのプロセス信号を抽出する手段は、
前記の関連付けて得る上流側の配管や機器と、その位置での計測信号について、上流側の機器に至るまで追跡し、計測信号に重み付けをした情報として得ることを特徴とするプロセス信号の抽出方法。
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WO2016147726A1 (ja) * | 2015-03-16 | 2016-09-22 | 株式会社日立製作所 | 異常予知・回復支援システム、異常予知・回復支援方法及び水処理システム |
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JPH06236493A (ja) * | 1991-05-22 | 1994-08-23 | Mitsubishi Electric Corp | 監視装置における位置状態監視方法 |
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EP3208675A1 (de) * | 2016-02-22 | 2017-08-23 | Siemens Aktiengesellschaft | Planungs- und engineering-verfahren sowie werkzeug für eine verfahrens- oder prozesstechnische anlage |
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