JP5698576B2 - Graph editing simulation device, graph editing simulation program, and plant maintenance management system - Google Patents

Description

  The present invention relates to a graph editing type simulation apparatus, a graph editing type simulation program, and a plant maintenance management system that can display a plant operating load pattern on a screen and evaluate energy saving effects due to changes in operating conditions in real time. is there.

  In recent years, for the purpose of plant maintenance, a computer that calculates (simulates) a model that formulates the plant operation mechanism, the performance and role of plant equipment, etc., analyzes the characteristics of the plant based on the calculation results, and generates Attempts have been made to solve, train, or evaluate the problems that are obtained in advance.

  As such a simulation system, Patent Document 1 discloses a technique for calculating a reference value for evaluation from collected plant data and evaluating a variation based on the reference value for evaluation to detect a plant abnormality. Has been. Patent Document 2 discloses a technique for displaying both trend graphs together with future predictions so that the current trend and the past trend of plant operation can be easily compared and examined. Patent Document 3 discloses a technique in which one of the system components is a bottleneck that affects system performance, and the degree of influence on performance is determined to analyze performance sensitivity with respect to a target variable.

JP 2001-60110 A JP 2000-10620 A JP 2004-21600 A

  By the way, in a plant maintenance management system, what is done to realize energy-saving operation is mainly cost effective and an alternative to a speed control method, and is relatively expensive. On the other hand, the conventional simulation system is based on a so-called stacking system that only shows how much energy saving effect can be expected by changing the specifications and configuration of the equipment. For this reason, according to the conventional simulation system, it is necessary to repeatedly execute the simulation in order to achieve the target.

  On the other hand, there is a method of predicting demand from past data and simulating an operation load pattern. However, in such a method, since the result is output by batch processing by setting the operation condition, the optimum operation pattern is determined by repeating the operation of setting the target several times and resetting the condition. For this reason, according to such a method, it takes a considerable amount of time to determine the optimum driving pattern, and it takes time and effort to operate, and the visibility of the screen displaying the simulation result is poor.

  The present invention has been made in view of the above-mentioned problems, and its purpose is to display a graph of a plant operation load pattern on a screen and to evaluate the energy saving effect by changing the operation conditions in real time, a graph editing type simulation An apparatus, a graph editing simulation program, and a plant maintenance management system are provided.

In order to solve the above problems and achieve the object, a graph editing type simulation apparatus according to the present invention includes an operation unit for inputting various operation information, and an operation in which past operation load patterns of plant equipment are accumulated for a predetermined period. When a specific search condition including a history database and a date on which simulation is desired is input from the operation unit, a search engine unit that searches for a driving load pattern that satisfies the search condition from the driving history database, and the search engine unit A graph editing processing unit that edits the operation load pattern searched by the base graph for each parameter in a plurality of parameters necessary for evaluation , generates and displays screen information including the base graph, and the screen from the operation unit. If more of the at least one the change instruction of the parameters included in the information is input, And a simulation processing unit for simulating the operation of plant equipment according to serial changed parameters, the graph editing processing unit, based on the results of a simulation of the simulation processing unit, updates the contents of the base graph, updating Screen information including the generated base graph is generated and displayed.

In order to solve the above problems and achieve the object, the graph editing type simulation program according to the present invention, when a specific search condition including a day for which simulation is desired is input, A search process for searching for a driving load pattern satisfying a search condition from a driving history database accumulated for a predetermined period, and a driving graph of the driving load pattern searched by the search process for each parameter in a plurality of parameters necessary for evaluation When editing is input to at least one of the plurality of parameters included in the screen information, a graph editing process for editing and generating screen information including the base graph and displaying the plant information according to the changed parameters A simulation process that simulates the operation of the device. To execute the computer, the graph editing process based on the result of the simulation of the simulation process, it updates the contents of the base graph, includes a process of generating and displaying a screen information including the updated base graph.

  In order to solve the above problems and achieve the object, the plant maintenance management system according to the present invention is connected to the plant equipment including an aquarium facility installed for each machine station, and the plant equipment via an electric communication line, A monitoring server for integrated management of the plant equipment and a graph editing type simulation apparatus according to the present invention are provided.

  According to the graph editing type simulation apparatus, the graph editing type simulation program, and the plant maintenance management system according to the present invention, it is possible to display the operation load pattern of the plant on the screen in a graph and evaluate the energy saving effect due to the change of the operation condition in real time.

FIG. 1 is a block diagram showing a configuration of a graph editing type simulation apparatus according to an embodiment of the present invention. FIG. 2 is a diagram illustrating an example of a data structure of the operation history DB illustrated in FIG. FIG. 3 is a flowchart showing the operation of the graph editing simulation apparatus shown in FIG. FIG. 4 is a diagram illustrating an example of a search screen. FIG. 5 is a diagram illustrating an example of a search result. FIG. 6 is a diagram illustrating an example of a pump operation simulation display screen. FIG. 7 is a diagram illustrating an example of a pump operation status display screen. FIG. 8 is a diagram illustrating an example of a pump operation simulation display screen. FIG. 9 is a diagram illustrating an example of a pump operation simulation display screen. FIG. 10 is a diagram illustrating an example of a pump operation status display screen. FIG. 11 is a block diagram showing a configuration of a plant maintenance management system according to an embodiment of the present invention. FIG. 12 is a diagram illustrating a configuration example of the aquarium equipment of the plant maintenance system that is an embodiment of the present invention.

  Hereinafter, the configuration and operation of a graph editing simulation apparatus according to an embodiment of the present invention will be described with reference to the drawings.

[Configuration of graph editing simulation device]
FIG. 1 is a block diagram showing a configuration of a graph editing type simulation apparatus according to an embodiment of the present invention. As shown in FIG. 1, a graph editing type simulation apparatus 1 according to an embodiment of the present invention includes an information processing apparatus such as a PC (Personal Computer) or a workstation, and includes a control unit 10, an operation unit 11, and a display unit. 12 and the memory | storage part 13 are provided as a main component.

  The control unit 10 is an arithmetic processing unit such as a CPU that executes processing based on a computer program stored in the storage unit 13, and executes processing described later according to a procedure described in the computer program. That is, the control unit 10 sequentially reads instruction codes from an OS (operating system) stored in the storage unit 13 and a computer program such as an application program including a graph editing simulation program according to the present invention and executes processing.

  The operation unit 11 includes, for example, a key to which various functions such as a power key, a call key, a numeric key, a character key, a direction key, a determination key, a call key, and a function key are assigned, or a pointing device such as a mouse. ing. When these keys or the mouse is operated by the user, the operation unit 11 generates a signal corresponding to the operation content and outputs the signal to the control unit 10 as a user instruction.

  The display unit 12 is configured using, for example, an LCD (Liquid Crystal Display Device) or an organic EL (Electro-Luminescence), which is configured by arranging a large number of pixels (a combination of light emitting elements of a plurality of colors) vertically and horizontally. The display unit 12 displays an image corresponding to display target data generated by the control unit 10 and drawn in a predetermined area (VRAM area) of the storage unit 13.

  The storage unit 13 stores various data in addition to the computer program described above. For example, in the storage unit 13, data such as an operation history DB (Data Base) 130 in which past operation load patterns are accumulated for a predetermined period is allocated and stored in a predetermined area. An example of the data structure of the operation history DB 130 is shown in FIG. As shown in FIG. 2, the operation history DB 130 includes data fields such as weather, average temperature, maximum temperature, minimum temperature, location, annual inflow, monthly inflow, and daily average inflow for each day and day of the week. Is stored. The operation history DB 130 may be constructed in the storage unit 13 built in the graph editing simulation support apparatus 1, or a DB constructed in a DB server (not shown) connected to the network may be used. The storage unit 13 includes, for example, a nonvolatile storage device (nonvolatile semiconductor memory, hard disk device, optical disk device, etc.), a randomly accessible storage device (eg, SRAM, DRAM), or the like.

  When a specific search condition including a day on which simulation is desired is input, the control unit 10 edits the driving load pattern obtained by searching the driving history DB 130 into a base graph for each parameter necessary for evaluation, Screen information including a graph is generated and displayed, and when there is an instruction to change the operation condition included in the screen information, a graph editing simulation program is executed to perform simulation and change the contents of the base graph.

  The structure of the graph editing simulation program executed by the control unit 10 includes a main control unit 100, a search condition input acquisition unit 101, a search engine unit 102, a graph editing processing unit 103, a drawing / display control unit 104, The function is expanded to a change input acquisition unit 105, a simulation processing unit 106, a measurement information acquisition unit 107, a neural network processing unit 108, and an energy saving evaluation unit 109.

  The search condition input acquisition unit 101 captures a specific search condition including a date on which the simulation is desired by operating the operation unit 11 and outputs the specific search condition to the search engine unit 102. The search engine unit 102 searches the operation history DB 130 constructed in a partial area of the storage unit 13 based on the specific search condition transferred from the search condition input acquisition unit 101, and the result is sent to the graph editing processing unit 103. Forward.

  The graph editing processing unit 103 edits a past similar operation pattern retrieved by the search engine unit 102 into a graph and outputs the graph to the drawing / display control unit 104. The drawing / display processing unit 104 draws screen information including a graph or the like generated by the graph editing processing unit 103 in a VRAM (Video RAM) area (not shown), and displays the screen information in synchronization with the display timing of the display unit 12. The data is read out and displayed on the display unit 12. The screen information generated by the graph editing processing unit 103 includes a pump operation status screen that is dragged by the operation unit 11 when changing the operation conditions, as will be described later. In this pump operation status screen, in order to facilitate the drag operation, each operation pump is displayed with a square icon. When displaying the base graph, the graph editing processing unit 103 represents at least one of a power amount, an inflow water amount, a water level, a dangerous water level, or a combination thereof in the plant on the time axis.

  The change input acquisition unit 105 detects the operation condition change instruction included in the display screen information by the drag-and-drop operation of the operation unit 11, and starts the simulation by the simulation processing unit 106. The simulation processing unit 106 matches the search conditions based on the past similar operation load patterns searched by the search engine unit 102, for example, the amount of power, the amount of inflow water, the water level, and the dangerous water level (hereinafter referred to as parameters) in the plant. For example, a function of quantitatively predicting and calculating by a statistical method such as multiple analysis such as regression analysis or covariance structure analysis. When there is an operation condition change instruction, the graph editing processing unit 103 updates the content of the base graph previously displayed on the display unit 12 based on the result of the simulation by the simulation processing unit 106.

The measurement information acquisition unit 107 acquires actual measurement information in the plant from the operation history DB 130 and supplies it to the neural network processing unit 108. Neural network processing unit 108 has a function to, based learning the actual measurement information obtained simulation result by the simulation processing unit 106 via the measurement information acquisition unit 107.

  The energy saving evaluation unit 109 is a function of calculating the energy saving expected amount by adding the power saving amount when the number of pumps operated is reduced and the power saving amount when the high water level operation is performed by the drag and drop operation by the operation unit 11. The energy saving expected value calculated here is transferred to the drawing / display control unit 105 as necessary and displayed on the display unit 12.

  The main control unit 100 simulates the driving load pattern obtained by searching the driving history DB 130 for each parameter necessary for the evaluation when the control unit 10 inputs a specific search condition including the day on which simulation is desired. Then, the simulation result is edited into a base graph for each parameter, screen information including the base graph is generated and displayed, and when there is an instruction to change the operating conditions included in the screen information, a simulation is performed and the base graph is displayed. In order to realize the function of changing the contents of the above, the search condition input acquisition unit 101, the search engine unit 102, the graph editing processing unit 103, the drawing / display processing unit 104, the change input acquisition unit 105, the simulation processing unit 106, Measurement information acquisition unit 107, neural network processing unit 108, energy saving evaluation unit 1 9 performs the sequence control of.

  In the control unit 10, the connection between the blocks does not indicate a physical connection relationship between the components in the actual hardware configuration, but indicates a main signal flow between the blocks.

[Operation of graph editing type simulation device]
Next, the operation of the graph editing simulation apparatus 1 according to an embodiment of the present invention will be described in detail with reference to the flowchart of FIG. Here, the operation load pattern of the three raw water pumps 401 installed in the water tank facility 400 of the sewage treatment plant shown in FIG.

  When evaluating the operation load pattern of the three raw water pumps 401, first, the operator operates the operation unit 11, so that the search screen G1 as shown in FIG. (Start end month and day), day of the week, type (weekday, holiday, weekday type), weather and temperature, the previous day's weather and temperature, and the amount of sewage inflow are entered as search conditions, and the search execution button B1 is clicked. To do. When the search execution button B1 is clicked, the control unit 10 determines that there is a search request by the operation unit 11 (step S101 “YES”), and the search condition input acquisition unit 101 captures this search condition (step S102). , And supplied to the search engine unit 102.

  In response to this, the search engine unit 102 searches the operation history DB 130 constructed in the storage unit 13 (step S103), and if there is an operation load pattern close to the target date (step S104 “YES”), then The closest past data is read and output to the graph editing processing unit 103. More specifically, as shown in FIG. 5, the search engine unit 102 displays a display screen G2 that shows a list of driving load patterns that match the search conditions. Then, when the operator selects a desired operating load pattern from the display screen G2 and clicks the simulation button B3, the graph editing processing unit 103 uses the selected operating load pattern to perform the pump operation simulation shown in FIG. The display screen G3 and the pump operation status display screen G4 shown in FIG. 7 are generated and displayed on the display unit 12 via the drawing / display control unit 104 (step S105). As shown in FIG. 6, the pump operation simulation display screen G3 is a screen information in which combinations of parameters such as the amount of sewage inflow, discharge amount, dangerous water level, water level, and electric energy in the plant are developed on the time axis. The As shown in FIG. 7, on the pump operation status display screen G4, the number of pumps operated is developed on the time axis and displayed as screen information. When the inflow amount prediction button B2 in the search screen G1 is clicked, the search engine unit 102 predicts the inflow amount of sewage in each searched operation load pattern, and the predicted inflow amount is in the search condition. Select an operation load pattern that satisfies the specified sewage inflow rate.

  The operator operates the operation unit 11 by operating the operation unit 11 to change the information in the editing unit on the pump operation simulation display screen G3 shown in FIG. 6 and the pump operation state display screen G4 shown in FIG. A load pattern can be simulated. That is, as shown in FIG. 8, when the operator reduces the discharge amount of sewage in the region R1 of the editing section of the pump operation simulation display screen G5 from the state shown in FIG. 6 by a drag operation (step S106 “YES”). By detecting this, the change input acquisition unit 105 activates the simulation processing of the driving load pattern by the simulation processing unit 106. As a result, as shown in FIG. 8, the discharge amount and the water level of the sewage in the display area R2 decrease and increase, respectively, and the contents of the graph change so that the electric energy in the display area R3 decreases. This is a result of the prediction calculation by the simulation processing unit 106, and the graph editing processing unit 103 re-edits the simulation result acquired from the simulation processing unit 106 into a graph. The graph editing processing unit 103 updates the screen information and outputs it to the drawing / display control unit 104, thereby displaying the pump operation simulation display screen G5 shown in FIG. When the discharge amount of sewage is changed, the simulation processing unit 106 calculates the amount of change in the sewage water level due to the change in the discharge amount of sewage, reads the discharge amount of the pump corresponding to the sewage water level, Read the pump power amount corresponding to the read pump discharge amount, calculate the number of pumps required for the changed discharge amount from the read pump discharge amount, and total the pump discharge amount Recalculate the amount of discharged sewage and the amount of change in the level of sewage.

Further, as shown in FIG. 10, when the operator increases the number of operating pumps in the region R4 in the editing section of the pump operation status display screen 7 by using a drag operation and uses the nighttime power to distribute the pump load ( In step S106 “YES”), the change input acquisition unit 105 detects this and activates the simulation processing of the driving load pattern by the simulation processing unit 106. As a result, as shown in FIG. 9, the content of the graph changes so that the amount of power in the region R5 of the display unit of the pump operation simulation display screen G6 decreases. This is the result of predictive calculation by the simulation processing unit 106, the graph editing processing unit 103 re-edit the simulation results obtained from the shoe configuration processing unit 106 in the graph. The graph editing processing unit 103 updates the screen information and outputs it to the drawing / display control unit 104, thereby displaying the pump operation simulation display screen G6 shown in FIG.

Further, as shown in FIG. 10, the operator adjusts the number of operating pumps in the region R6 in the editing section of the pump operation status display screen 7 by dragging, thereby reducing the contract power and the high water level by the load distribution operation of the pumps. When the pump efficiency is increased by the operation (step S106 “YES”), the change input acquisition unit 105 detects this and starts the operation pattern simulation processing by the simulation processing unit 106. As a result, as shown in FIG. 9, the contents of the graph change so that the sewage water level and the electric energy in the region R7 of the display part of the pump operation simulation display screen G6 rise and fall, respectively. This is the result of predictive calculation by the simulation processing unit 106, the graph editing processing unit 103 re-edit the simulation results obtained from the shoe configuration processing unit 106 in the graph. The graph editing processing unit 103 updates the screen information and outputs it to the drawing / display control unit 104, thereby displaying the pump operation simulation display screen G6 shown in FIG.

When the neural network menu M1 in the pump operation simulation display screen G3 shown in FIG. 6 is set to ON, the neural network processing unit 108 sends the simulation result by the simulation processing unit 106 via the measurement information acquisition unit 107. and learning studies based on the obtained actual measurement information supplied to the graph editing unit 103 (step S108). Graph editing unit 103, by outputting a simulation result to the drawing, the display control unit 104 to update the screen information by re-editing the chart data, screen including a graph is displayed on the display unit 12.

  In this way, by changing the driving conditions by drag-and-drop operation, other related graph lines also change simultaneously in real time by simulation, so it is possible to save time and effort for resetting the target, and driving load in the graph Visibility is improved because the pattern is displayed. In this way, the operator can visually determine how long the high water level operation is possible by reducing the number of pumps, and the sum of the power savings during the time when the number of pumps operated has been reduced and the power savings resulting from high water level shifts. Can be understood as the energy saving expected amount.

  In addition, the energy saving evaluation unit 109 calculates the energy saving expected amount by adding the power saving amount when the number of pumps operated is reduced by the drag operation by the operation unit 11 and the power saving amount when the high water level operation is performed, The energy saving expected value calculated here is transferred to the drawing / display control unit 105 and displayed on the display unit 12 (step S109). Thus, since the energy saving expected amount is automatically calculated by the energy saving evaluation unit 109 and displayed on the display unit 12 as necessary, it is possible to save time and effort for visual evaluation of the operation and the energy saving effect.

  According to the graph editing type simulation apparatus 1 according to the embodiment of the present invention, when there is an instruction to change the operating condition included in the screen information, the simulation result is acquired and the content of the base graph is changed. Simulation results due to changes in operating conditions are displayed simultaneously with other related graph lines in real time, reducing the time required to obtain simulation results and reducing the operational effort for resetting the target. Also improves.

  In addition, since the simulation results are optimized by the neural network, the reliability of the evaluation results is improved. Furthermore, the amount of power saved when the number of pumps operated is reduced by drag operation and the amount of energy saved when high water level operation is performed. By calculating and displaying the energy saving expected amount by adding the amount of electric power, it is possible to save time and effort for evaluation.

  The graph editing simulation program of the present invention is a graph editing simulation program that is executed on a computer of a graph editing simulation apparatus that displays an operation load pattern of a plant device on a screen and evaluates an energy saving effect. For example, as shown in the flowchart of FIG. 3, when a specific search condition including a day on which a simulation is desired is input, an operation history database in which past operation load patterns are accumulated for a predetermined period is searched. Search processing (steps S101 to S103) to be performed, edit the driving load pattern obtained by the search processing into a base graph for each parameter necessary for evaluation, generate and display screen information including the base graph, and There was an instruction to change the operating conditions included in the screen information To simulate the can, the graph editing process of updating and displaying the contents of the displayed based graph based on the results of the simulation (step S104 to S109), in which to run.

(Plant maintenance system)
FIG. 11 is a diagram showing an example of a system configuration when the graph editing simulation apparatus 1 according to an embodiment of the present invention is applied to the plant maintenance management system 200. As an industrial process, for example, when a water supply system is illustrated, a plurality of facilities such as facilities # 1 and # 2 which are water tank facilities are installed in the machine. Each facility includes so-called field devices such as a water level sensor and a valve regulator. These field devices are in one-to-one correspondence with data collection devices 301 to 304 called communication devices assigned to each facility. It is connected so that it can communicate. This connection is made through a serial data communication path such as RS485.

  In addition to being transmitted to the monitoring devices 210 and 212, the measurement data at each field device is also transmitted to the communication devices 301 to 304 described above. All the communication apparatuses 301 to 304 are communicably connected to the graph editing type simulation apparatus 1 according to an embodiment of the present invention. This connection is, for example, a LAN (Local Area Network) connection by Ethernet (registered trademark) or the like. by. Operation data including measurement data buffered in the communication devices 301 to 304 is stored in a file format in a DB server (not shown) via a LAN. The graph editing type simulation apparatus 1 refers to the operation history accumulated in the DB server and simulates the operation status of the plant, and the contents simulated here are client terminals 202 and 204 via the LAN 200 as necessary. Or the central monitoring server 206 as appropriate. According to this plant maintenance management system 200, since changes in operating conditions are reflected in real time for each plant equipment including aquarium equipment installed for each machine, the burden on evaluation of the entire plant is reduced, and maintenance management is performed. It becomes easy.

  Note that the graph editing simulation program of the present invention may be installed in the client terminals 202 and 204, and the operation load patterns of the plant equipment may be displayed in a graph on the screen to evaluate the energy saving effect.

  As mentioned above, although this invention was demonstrated using embodiment, it cannot be overemphasized that the technical scope of this invention is not limited to the range as described in the said embodiment. It will be apparent to those skilled in the art that various modifications or improvements can be added to the above-described embodiments. Further, it is apparent from the scope of the claims that the embodiments added with such changes or improvements can be included in the technical scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Graph edit type simulation apparatus 10 Control part 11 Operation part 12 Display part 13 Storage part 14 Sensor etc. 100 Main control part 101 Search condition input acquisition part 102 Search engine part 103 Graph edit process part 104 Drawing and display control part 105 Change input acquisition Unit 106 Simulation processing unit 107 Measurement information acquisition unit 108 Neural network processing unit 109 Energy saving evaluation unit 130 Operation history DB
200 Plant maintenance system

Claims (5)

An operation unit for inputting various operation information;
An operation history database in which past operation load patterns of plant equipment are accumulated for a predetermined period;
When a specific search condition including a day on which simulation is desired is input from the operation unit, a search engine unit that searches for a driving load pattern that satisfies the search condition from the driving history database;
Editing the operation load pattern searched by the search engine unit for each parameter in a plurality of parameters required for evaluation into a base graph, generating and displaying screen information including the base graph, and a graph editing processing unit,
If at least one the change instruction of the plurality of parameters included in the screen information from the operation unit is input, and a simulation processing unit for simulating the operation of plant equipment in accordance with the changed parameters,
The graph editing processing unit updates the contents of the base graph based on a simulation result of the simulation processing unit, and generates and displays screen information including the updated base graph. Type simulation equipment. The screen information generated by the graph editing processing unit includes a pump operation number pattern that is dragged by the operation unit when the parameter is changed, and the graph editing processing unit includes the base graph Upon displaying the amount of power in the plant, inflow water amount, water level, and at least one of the risk level, or according to claim 1, characterized in that the representation on the time axis as the parameter combinations thereof Graph editing type simulation device. Energy saving expected by calculating the energy saving amount by adding the power saving amount when the number of pumps operated is reduced and the power saving amount when the high water level operation is performed by the drag operation by the operation unit, and displaying on the display unit The graph editing simulation apparatus according to claim 2 , further comprising an evaluation unit. When a specific search condition including a day for which simulation is desired is input, a search process for searching for an operation load pattern satisfying the search condition from an operation history database in which past operation load patterns of plant equipment are accumulated for a predetermined period; ,
Editing the operation load pattern searched by the search process into a base graph for each parameter in a plurality of parameters required for evaluation , and generating and displaying screen information including the base graph, and a graph editing process,
Wherein when at least one the change instruction of the plurality of parameters included in the screen information is input, to execute a simulation process of simulating the operation of plant equipment in accordance with the changed parameter, to a computer,
The graph editing process includes a process of updating contents of the base graph based on a simulation result of the simulation process, and generating and displaying screen information including the updated base graph. Editable simulation program. The plant equipment including the aquarium equipment installed for each machine place, the monitoring server connected to the plant equipment via an electric communication line and integratedly managing the plant equipment, or any one of claims 1 to 3. A plant maintenance management system comprising the graph editing type simulation device according to claim 1.

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