JP2019096268A - Water treatment plant operation assisting system - Google Patents

Abstract

To compare the current data with the past performance data and thereby enable a plant facility to be operated stably.SOLUTION: A water treatment plant operation assisting system of the present invention includes a history database 17 in which performance data relating to the past water level and fed amount of water relating to a distribution reservoir facility and a water feeding facility, and also includes an operation assisting device 2 for controlling the distribution reservoir facility and the water feeding facility. The operation assisting device 2 compares data relating to the current water level and fed amount of water in the distribution reservoir facility and the water feeding facility with performance data relating to the past water level and fed amount of water recorded in the history database 17 for which the classification of weather, atmospheric temperature and days of the week in the distribution reservoir facility and the water feeding facility matches, and when the comparison value is a normal state within a permissible range, transmits the content of control instructions obtained from the stably operated past performance data similar to the current state to the distribution reservoir facility and the water feeding facility.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a water treatment plant operation support system, and more particularly to a water treatment plant operation support system having a function of recovering an abnormal state to a stable operation.

  The operation guide system of the conventional water treatment plant shown in Patent Document 1 presents the operation guidance of the operation target device according to the operation rule corresponding to the plant state, and is a process signal for taking in the continuous rotation state amount of the plant Input / output processing unit, process data file for storing process data, first knowledge base for storing plant operation rules, second knowledge base for storing operation rule update evaluation rules, specific plant A test data storage unit storing test data representing a state, a first inference process for obtaining driving guidance information according to the driving rule, and a second inference process for obtaining availability information for driving rule update according to the evaluation rule Processing unit, an inference processing result file for storing the result of the inference processing, a result of the first inference processing, and A simulator for executing a simulation of plant operation based on the test data, a simulation result storage unit for storing the result of the simulation, and an output processing unit for outputting the result of the simulation and the result of the inference process .

Furthermore, to explain this conventional system, it comprises a CRT display device and a processing device, and performs input / output of information (signals) with the plant through the plant interface device. Here, the processing device includes a CPU, a main memory, an auxiliary storage device, and the like.
First, a normal online system operation mode will be described. The operating condition of the plant is taken in by the process signal input / output processing unit as a measurement signal of a device state signal or an operation index, and is stored as time-series data in a process data file. The inference processing unit applies driving rules to the process data file, deduces a driving operation to be operated, and obtains it as driving guidance. The result is stored in the inference processing result file, and is displayed as driving guidance on the CRT display device by the CRT display processing unit.

  On the other hand, the simulator simulates the operating characteristics of the plant when executing the operation based on the inference result according to the data of the process data file and the operation guidance of the inference processing result file using the control model, and the simulation result Store in a file The simulation result is also displayed on the CRT display device by the CRT display processing unit, and the validity of the operation guidance can be roughly confirmed.

  Next, means for reliably evaluating the appropriateness of the rules at the time of updating the driving rules will be described. When the operating characteristics of the plant change over time or change in the environment, or when the plant facilities are added or remodeled, it is necessary to add, delete or modify operation rules and update the knowledge base in response to these changes. At the same time, the control model inside the simulator must be corrected as well, but it is difficult to make it match well with the operating characteristics of the plant. A rainwater drainage pump station is an example of a plant. The stormwater drainage pump station has a mission to prevent rainwater in the city by collecting the rain that has fallen to the city with a sewer pipe and discharging it to the river with a pump. Changes in equipment over time include changes in pump characteristics and changes in specifications due to repairs, and changes in the environment include improvements in pavement coverage on the ground surface and maintenance of sewer pipes, and patterns of inflow to rainfall change year by year Also, it is necessary to change the operating rules of the pump.

  When changing the operation rules, it is particularly necessary to evaluate and confirm the validity, and the simulation is performed using data stored in the test data file. In the case of a rainwater drainage pump, heavy rain, light rain, and a two-time rainfall pattern after the rain has stopped may be considered. First, for each case, the driving rules are compared and the driving guide is inferred by the inference processing unit. This driving guide is stored in the inference processing result file. Next, the simulator simulates, using the control model, operation characteristics when driving is performed using the test data file and the operation guide of the inference processing result file, and stores the simulation in the simulation result file. Furthermore, the inference processing unit refers to the simulation result file, applies the driving rule, and infers the driving guide again. This driving guide is also stored in the inference processing result file.

Subsequently, the inference processing unit applies and evaluates the evaluation rule, and compares and evaluates the driving guide stored in the inference processing result file, its simulation result, and the driving guide again. Thereby, while confirming the appropriateness of the update of a driving | running | working rule, it is effective in the precision improvement of a driving | running rule. The above simulation results and inference results are displayed on the CRT display together with the applied driving rules and evaluation rules.
As described above, in a conventional operation guide system of a water treatment plant, a method of displaying operation guidance of an operation target device using an operation rule corresponding to a plant state has been proposed (see Patent Document 1).

JP-A-4-186403

The following describes the problems of the prior art, but before that, the terms used in the following description will be explained regarding the water treatment plant.
First of all, the distribution facility is a facility that stores water actually supplied to consumers, and the pump facility is a facility that sends water from a water source, such as a lake or river, to the water reservoir facility that has been purified and purified. The valve equipment is equipment that adjusts the amount of water sent to the distribution reservoir equipment by adjusting the opening and closing angle and the like.
Also, the water level is the water level of the distribution facility, and the amount of water when supplying water to the demander can be calculated from this water level, so it is used as a numerical value to determine whether the water can be supplied to the demander . The water supply amount is the amount of water distributed by the pump facility and the valve facility to the distribution reservoir.
Water supply plan is to adjust this water supply volume to meet the demand volume.
Water operation refers to a series of operations for stably supplying water to consumers by adjusting the amount of water supplied by the pump facility and the valve facility, and the water level of the distribution facility.
The water supply equipment refers to equipment such as the above-mentioned pump equipment, valve equipment and the like that feeds and supplies water.

  Since the operation guide system of the conventional water treatment plant is configured as described above, the operation of the water treatment plant is supported using the operation guide according to the operation rule corresponding to the current plant state, It is a guide that focuses on the operation of the plant, and does not take into consideration the operation before and after the adjustment of water supply. In the operation of the water treatment plant, for example, the pool is scheduled to open later, and there is adjustment of the amount of water supply for it, and there is adjustment of the amount of water supply according to the change of demand of home and factory etc. Since there is adjustment of water supply volume at the time of large volume, and the operation for adjusting the water supply is taken into consideration, there is a problem that it can not cope only with the method focusing on the correspondence of the current plant condition.

  In addition, by comparing with data that had been operated in the past at the time of normal operation, monitor whether there is any abnormality in the pump equipment, valve equipment and distribution reservoir equipment of the water treatment plant currently operated, and warn if there is abnormality. Method is not adopted. If there is no such method, even if the current condition seems to be operating normally, excess or deficiency of water supply actually occurs, and after several hours, it takes an abnormal state that requires time for recovery Is also possible. That is, the prior art does not have prior prediction of signs of abnormality or a method for detecting an abnormality itself, and there is a problem in recovery after becoming an abnormal state, and there is a problem in stable operation.

  This invention was made in order to solve the above subjects, and the water treatment plant operation support system which can operate plant facilities stably by comparing the present data and the past performance data. Intended to provide.

The water treatment plant operation support system according to the present invention acquires the data on the water level from the distribution facility and a controller for acquiring the data on the water supply amount from the water transmission facility, and the data on the water level and the water supply amount acquired by the controller. It has a control bus to transmit, a history database containing past water level and water supply volume and past performance data on water distribution equipment, and has operation support equipment to control the water distribution equipment and water transmission equipment. And the
The operation support device is recorded in the history database in which the data regarding the current water level and the water transfer amount in the water distribution facility and the water transmission facility, and the weather, air temperature, and day classification in the water distribution facility and the water transmission facility coincide. Compare the above actual data on past water level and water flow, and if the comparison value is in the normal range within the allowable range, the contents of the control instruction obtained from the above past data with stable operation similar to the current state It transmits to the said distributing reservoir installation and the said water supply installation.

In the water treatment plant operation support system according to another invention, a controller for acquiring data on the water level from the water distribution facility and acquiring data on the water supply amount from the water transmission facility, and the water level and the water amount acquired by the controller An operation support device for controlling the distribution reservoir facility and the water transmission facility, as well as having a control bus for transmitting data, and a history database storing the past water level and water transfer volume performance data regarding the water distribution facility and the water transmission facility Equipped with
The operation support device is recorded in the history database in which the data regarding the current water level and the water transfer amount in the water distribution facility and the water transmission facility, and the weather, air temperature, and day classification in the water distribution facility and the water transmission facility coincide. We compare the above-mentioned actual data about the past water level and water flow volume, and when the comparison value exceeds the allowable range, predict the amount of water to be supplied so as to be able to supply the customer's water demand. And calculating the amount of water transmission in the water transmission equipment necessary to satisfy the supply amount.

  According to the water treatment plant operation support system configured as described above, the plant facility can be stably operated by comparing the present data with the past performance data.

FIG. 1 is a block diagram showing a configuration of a water treatment plant operation support system according to a first embodiment. FIG. 1 is a block diagram showing a detailed configuration of an operation support apparatus according to a first embodiment. 5 is a flowchart showing the operation of the flow diagram creation unit according to the first embodiment. 6 shows a sample of a system diagram according to Embodiment 1. 5 is a flowchart showing an operation of a water supply level monitoring unit according to the first embodiment. 2 is a block diagram of a water supply planning unit according to Embodiment 1 and a flowchart showing an operation thereof. FIG. It is a sample of the screen where the conditions of demand forecast were input. It is an example of the screen which can refer to the result of demand amount prediction data by Embodiment 1. FIG. 6 shows a sample of a system diagram according to Embodiment 1. It is a sample of the screen which sets the operation policy by Embodiment 1. FIG. It is a sample of the screen which sets the power rate by Embodiment 1. FIG. It is a sample of the screen which sets the upper and lower limit value of the distributing reservoir by Embodiment 1. FIG. It is a sample of the screen which displays the amount of water supply calculated by the amount calculation of water supply by Embodiment 1. FIG. 6 shows a sample of a system diagram according to Embodiment 1. It is a sample of the screen which displays the water supply amount calculation result for every installation by Embodiment 1. FIG. It is a sample of the screen for displaying and confirming the water flow rate calculation result at the time of water flow rate correction according to the first embodiment. It is an example of the water supply correction screen according to the first embodiment. It is an example of the screen which displays transition of the water level of the distributing reservoir by Embodiment 1. FIG. It is a block block diagram of the water supply plan part by Embodiment 2, and a flowchart which shows operation | movement. They are a block block diagram of the water supply plan part by Embodiment 3, and a flowchart which shows operation | movement.

Embodiment 1
The present invention is a water treatment system having a function of monitoring the water supply condition in the field of water supply, controlling the water supply plan of the water treatment plant facility and controlling the water treatment plant facility when an abnormality occurs, and restoring the abnormal condition to stable operation. The present invention relates to a plant operation support system.
The configuration of the first embodiment will be described below based on the drawings. FIG. 1 is a block diagram showing the configuration of a water treatment plant operation support system. The present system comprises a monitor 1, an operation support device 2, a control bus 3 and a controller 4, and controls and operates plant equipment 5 such as pump equipment, valve equipment and distribution reservoir equipment. The controller 4 collects and controls the state of the plant equipment 5. The operation support device 2 performs water amount calculation and correction of pump equipment and valve equipment in the plant equipment 5, monitors the water level of the distribution equipment, further creates and edits a system diagram, sets data of each equipment, and Take control. The control bus 3 implements bidirectional information transmission between the operation support device 2 and the controller 4. The plurality of monitors 1 display a system diagram handled by the operation support apparatus 2, calculation results, alarms and the like, and are further used when setting data.

  FIG. 2 is a block diagram showing the detailed configuration of the operation support apparatus 2. The operation support apparatus 2 includes the online unit 6 of the operation support apparatus 2 and the offline unit 7 of the operation support apparatus 2. The on-line unit 6 displays on the monitor 1 a system diagram illustrating the symbols of the plant equipment 5 such as the pump equipment, the valve equipment and the distribution equipment and their connections on the monitor 1, and the pump equipment, the water supply of the valve equipment and the distribution equipment Monitor the water level. Further, the on-line unit 6 plans the water supply amount of the pump equipment matched to the demand amount of water, and further controls the plant equipment 5 such as the pump equipment, the valve equipment and the distribution reservoir equipment. The off-line unit 7 creates data of the system diagram and further performs editing.

  The off-line unit 7 includes a system database 13, a system diagram creating unit 14, and a plant database 15. The system diagram creation unit 14 creates a system diagram in which equipment symbols indicating plant equipment 5 such as pump equipment, valve equipment, and distribution equipment are connected by a line indicating piping equipment. Further, the system diagram creation unit 14 has a function capable of inputting and editing the specifications (dimensions, weight, etc.) of each facility, and also has an editing function of moving, copying, deleting, etc. of the component. The system database 13 holds the data created by the system diagram creation unit 14. The plant database 15 is used when correlating the equipment symbol on the system diagram with the data of the plant equipment 5.

  The on-line unit 6 includes a system diagram display monitoring unit 8, a water supply amount water level monitoring unit 9, a water supply planning unit 16, a plant data collection control unit 10, a system database 11, a plant database 12 and a history database 17. The system diagram display monitoring unit 8 displays the above-described system diagram on the monitor 1 and displays an abnormality of each plant facility 5. The water supply amount water level monitoring unit 9 monitors whether there is an abnormality in the water supply amount of the currently operating pump equipment and valve equipment and the water distribution amount of the distribution reservoir equipment. The water supply planning unit 16 calculates the amount of water supply for the valve equipment and pump equipment that meets the demand for water at the time of abnormality occurrence, etc., confirms the presence or absence of problems, corrects the water supply amount, and uses the operation guide for the plant equipment 5 Send water flow control command. The water supply amount correction function 163 displays and corrects the specifications of the plant equipment 5 so that the water supply amount of water transmission equipment such as pump equipment and valve equipment can be controlled. The plant data collection control unit 10 collects data of the plant equipment 5 and displays it in a system diagram or controls the plant equipment 5.

  The on-line unit 6 monitors, at normal times, the water supply amount monitoring unit 9 whether there is an abnormality in the water supply amount of the currently operating pump equipment and valve equipment and the water distribution amount of the distribution reservoir equipment. Then, after judging that it is abnormal, the demand amount prediction function 161 in the water delivery plan section 16 calculates the water delivery amount meeting the water demand, the water delivery amount correction confirmation function 163 confirms the water delivery amount, corrects the water delivery amount, and further An abnormal state can be restored using the water supply control command function 164 using the driving guide. The water supply planning unit 16 can also be executed at the time of change of the operation plan such as cost reduction due to the change of the plant facility 5 or the amount of electric power other than when the diagnosis of abnormality comes out. As it can be controlled, stable, effective, and error-free operation of the water supply facility can be achieved. Here, the driving guide is displayed on the monitor 1, and is a screen on which a pump facility to be controlled for each water purification reservoir, a valve facility, and a button describing the time and water supply amount are arranged. When the operator presses the button of the operation guide screen, the value of the water supply amount is sent to the plant data collection control unit 10 to the pump equipment and valve equipment that require the water supply amount setting at present, and the pump equipment of the plant equipment 5 , To be able to send and control the valve installation.

  Next, the operation of each part will be described. FIG. 3 is a flowchart showing the operation of the system diagram creation unit 14. When creating a system diagram, the symbol of each facility is first placed by the facility symbol placement function in the system diagram creation unit 14 (step 101). The equipment symbol arrangement function displays a list of equipment icons and arranges the symbol of the selected equipment at a specified position. For example, as shown in the system diagram sample of FIG. 4, equipment symbols such as a water purification tank, a pump equipment, and an inflow valve are arranged. Next, with the connection function of the system diagram creation unit 14, two equipment symbols to be connected are specified by clicking the mouse or the like, and the arranged equipment symbols are connected (step 102). The connection function creates connection information between facility symbols, and displays a line with an arrow indicating a piping facility as shown in FIG. In the case of branching, the presence / absence is automatically recognized to create connection information.

  Next, the specification of the equipment is inputted by the equipment specification input function (step 103). The equipment specification input function displays a screen for inputting the specification of the designated equipment symbol, and saves data of the equipment specification by individually performing data input and registration operation. Next, tag data associated with the data of the plant equipment 5 is allocated to the allocated equipment symbols by the tag allocation function of the equipment, and the data of the equipment on the system diagram and the plant equipment 5 are correlated (step 104). The tag allocation function of the plant equipment 5 displays a list of the plant equipment 5 at the site from the plant database 15, and specifies both the equipment symbol arranged on the system diagram and the equipment on the list to specify the equipment specifications. Set the tag to

  Although the function related to the new creation of the system diagram has been described above, the system diagram creating unit 14 also holds the correction function and the deletion function. When the system diagram is created by newly creating, correcting, and deleting the facility symbol and the connection symbol, the data storage function stores the data in the system database 13 (step 105). The data storage function is performed by the storage operation of the operator, and the consistency check between the facility symbol of the system diagram created up to this point and the plant facility 5 is performed, and if there is no error, the online diagram Is displayed, the water supply amount is calculated, data that can be corrected is created, and stored in the system database 13. If there is an error, the equipment symbol of the error is displayed in different colors and then the error content is displayed. Although the on-line unit 6 and the off-line unit 7 are described separately, they may be integrated into one device. The system database 13 created by the system diagram creation unit 14 of the off-line unit 7 is confirmed by confirmation of the equipment specifications by the operator, and then reflected on the system database 11 of the online unit 6 by a copy operation.

  Next, the operation of the on-line unit 6 will be described. The system diagram display monitoring unit 8 reads the system database 11 and displays on the monitor 1 a system diagram as shown as a sample in FIG. In the displayed system diagram, the normal or abnormal operation status of each plant equipment 5 is displayed by color, and the plant equipment judged to be abnormal by the water level monitoring of the distribution reservoir equipment described later, evaluation index confirmation, and water level trend confirmation function Is displayed in color, and it is also changed and displayed as a picture showing water level over at the distribution reservoir facility when water level upper and lower limits are exceeded. In addition, by designating the equipment symbol on the system diagram with a pointing device such as a mouse, the demand forecasted by the demand forecasting function 161 described later is displayed, and for 24 hours calculated by the water flow calculating function 162 described later The trend graph of water supply amount and the table of water supply amount are displayed, and furthermore, the plant data collected by the plant data collection control unit 10 are displayed in the form of a trend graph.

Then, the symbol of the equipment that has generated the alarm information in the plant equipment 5 is displayed by highlighting. Here, highlighting means, for example, a distribution facility symbol, and when the water level is over the upper limit value, it is possible to identify an abnormality at a glance, such as displaying the over portion in red. The water supply planning unit 16 of the on-line unit 6 has a plant equipment specification display function installed, and pump equipment (excluding manual operation) and valve equipment (inflow valve, water receiving valve, etc. on the system diagram, but contact) The valve is excluded), and when the facility symbol of the distribution facility is indicated, the currently set condition of the facility and the current state of the plant facility are displayed. The display items of each equipment are as follows. That is,
As reservoir facilities, there are water level upper and lower limit value, current water level and so on.
The pump equipment includes the type of pump, the number of pumps, the upper and lower limit value of water supply amount, and the like.
As the valve equipment, there are upper limit value and lower limit value of water supply amount.

  The water supply amount monitoring unit 9 periodically monitors the water supply amount of the pump equipment and the valve equipment, and further monitors the water level of the water distribution equipment. The operation of the water supply capacity of the water transmission facility or the water level of the distribution facility is often the same operation when the conditions such as weather, temperature, day of the week are the same. Therefore, the monitoring method is performed by collating the past data recorded in the history database 17 with the operation results and the current situation. Hereinafter, the operation of the water supply amount water level monitoring unit 9 will be described based on the flowchart of FIG. The water supply level water level monitoring unit 9 repeatedly executes the operation described below at regular timing, such as once every 30 minutes, in the online unit 6 (step 200).

  First, the present day is classified and determined from the current calendar information in the online section 6 as to which day the current day falls on Monday, weekdays (Tuesday to Friday), Saturdays, Sundays, or holidays (step 201). Next, the water supply amount of the pump facility and the valve facility, and the water level of the distribution facility are acquired from the plant data collection control unit 10 (step 202). The pump installation and the valve installation are equipped with a measuring device (not shown), and the measuring device measures a process amount including data such as water supply amount and water level of the water and sewage controlled by the plant installation 5. Then, measurement data of the measurement device is acquired from the controller 4 and transmitted to the plant data collection control unit 10. The water supply amount water level monitoring unit 9 acquires, from the plant data collection control unit 10, the water supply amount of the pump facility and the valve facility, and the current value of the water level of the water distribution facility. Then, the current weather and temperature are acquired from the weather information site on the Internet (step 203), the data from the present to the past are searched from the history database 17 for matching weather, temperature and day classification, and pump equipment and valve equipment The average of the water supply amount and the water level of the distributing reservoir is taken as the past actual data (step 204).

  The data obtained as described above, that is, the water supply amounts of the current pump equipment and valve equipment, the water level of the distributing reservoir, and the past performance data are compared (step 205). If an abnormality is found, the generated facility is blinked or otherwise highlighted via the systematic diagram display monitoring unit 8, and warning information is displayed on the monitor 1 together with a warning sound. In this way, the operator is notified of the abnormality and alerted (Step 206). In the case of the normal state within the allowable range, the content of the control instruction is displayed on the driving guide screen from the past stable operation result data similar to the current state, and it is possible to operate and control by button operation (step 207) . Since the value of the allowable range used to determine an abnormality is often different depending on the operation, it can be changed by a change screen (not shown). If the current day is a special day such as GW (May consecutive holidays), basin, new year, water distribution restriction day, storm or event day, the above conditions can be specified from the screen (not shown). By setting the day classification used for the determination of the past performance data described above on a special day, it is possible to monitor even under special conditions.

  The water supply planning unit 16 plans the water supply amount of the pump and valve equipment so as to be able to supply an amount corresponding to the demand for water of a customer such as a factory or a home when the water supply amount monitoring unit 9 determines that it is abnormal. That is, the amount of water to be supplied is predicted by the demand amount prediction function 161, and the amount of water transmission of pump equipment necessary to satisfy the amount of water supply is calculated by the water amount calculation function 162. Then, after confirming the water supply amount or correcting the water supply amount as described later, the system instructs the pump equipment to operate with the planned water supply amount. As a command, arrange the button which specified pump equipment or valve equipment to be controlled on the operation guide screen, time and water flow amount in time series on the screen, and send the water flow amount to the water transmission equipment by pressing the button. , To be able to control. The water supply planning unit 16 can also be executed at the time of change of facilities, or change of operation plan such as cost reduction due to electric energy, etc., in addition to the case where it is judged abnormal, stable, effective and efficient Can operate water supply facilities. Similarly, at the time of change of the plant equipment 5 or change of the operation plan such as cost reduction due to electric energy etc., the pump equipment or valve equipment to be controlled, time, water quantity Are arranged in chronological order on the screen, and can be instructed by pressing the button.

  About the function of the water supply plan part 16, the operation | movement is demonstrated based on the block block diagram and flowchart which are shown in FIG. The demand amount forecasting function 161 is a function to forecast the demand amount of water from consumers such as homes and factories, and to calculate the water distribution amount of the distribution pond facility based on the forecasted demand amount. The history database 17, which is actual data of First, the operator inputs the conditions of demand forecast from the screen (step 300). That is, the information of predicted classification such as the weather of the day, the next day, the day after next, the maximum temperature, the day of the week, the special day, etc. is set from the screen. The screen referred to here is, for example, an image screen as shown in FIG. The weather sets the expected weather on the next day, the next day, and the next day. Maximum temperature sets the maximum temperature expected on the day and the next day. Set the day classification or special classification for the prediction classification. The day is classified as Monday, weekday (Tue-Fri), Saturday, Sunday, or a public holiday as a day classification, and as a special classification is a special day such as GW (May consecutive holidays), tray, New Year's day, distribution limit day, storm, event Specify the predicted conditions.

  FIG. 7 is a sample of the screen on which the condition of demand amount prediction is input, and shows an example in which the weather and temperature of the next day, the next day, and the next day are input. Next, demand amount forecast calculation is executed from the screen (step 301). Demand forecast calculation differs in calculation method by prediction classification. If the forecasted classification is a day of the week classification, actual data of weather, temperature, and demand amount from the present to the past are acquired from the history database 17 and the average of the demand amount in the same day classification as the forecast date is calculated. The predicted value is calculated by adding the amount affected by. The amount affected by the weather and temperature is calculated from the demand amount acquired from the history database 17, weather and temperature data, using multiple regression analysis to calculate the relationship between the weather and temperature and the demand amount. The number of days in the case of extracting past performance data can be changed as a parameter.

If the prediction classification is a special classification, the number of samples is small, so the actual results of the same special day in the past are acquired from the history database 17 without using multiple regression analysis like day classification, and the average value is taken as the demand forecast value. . The calculated demand forecast data is recorded in the demand forecast data 52. The operator refers to the demand forecast data in a graph, and also manually, in case the demand forecast value needs to be corrected when the calculation results no longer match the current state due to sudden changes in the weather, etc. The forecasted demand value can also be corrected at. That is, the correction button at the bottom of the graph of FIG. 8 is pressed, and correction is made on the correction screen shown in FIG. Alternatively, click on the graph of FIG. 16 and correct on the correction screen of FIG. FIG. 8 is an example of a screen on which the result of the demand forecast data can be referred to, and the demand forecast screen of FIG. 8 is shown for the three distribution areas 71, 72 and 73 shown in the system diagram of FIG. The example which displays the calculation result (dotted line) of the demand amount forecast for 24 hours for every three distribution districts with the performance (solid line) for the past 24 hours is displayed as a graph.
That is, the predicted value is calculated as a standard value for delivering water without excess or deficiency. In the case of FIG. 8, the actual value approximates to the predicted value, which corresponds to the standard case, and it is general to operate without correction. Other than the standard, for example, when the water supply suddenly increases, such as the pool open day, or when the operator judges that it is safe to adjust slightly from the standard.

  The water supply amount calculation function 162 calculates the water amount sent out by the pump facility and the valve facility so that the water satisfying the demand volume obtained by the demand volume prediction function 161 is supplied to the distribution facility. As for this water supply amount calculation, the policy of water operation in the water treatment plant is considered. That is, the cost may be emphasized, and further, the stable operation (smoothing) may be emphasized, that is, even if the cost is somewhat increased, it may be desired to suppress the variation of the water supply amount at each time. Furthermore, they may be customized to meet the limitations of pump equipment, valve equipment, and reservoir equipment. It has a function that can calculate the amount of water supply taking into consideration the above. The operator first chooses the water operation policy, ie, an option to calculate the water supply amount so that the change in water supply amount per hour is minimized by giving priority to smoothing, or smoothing priority and cost with smoothing and cost being equal. Select either the option to calculate the water flow rate to have the same priority, or the option to calculate the water flow rate to minimize the cost of the valve installation and the pump installation as cost priority. (Step 302).

  FIG. 10 is an example of a screen for selecting one of the three options described above. By selecting one of the buttons on this screen, the above-mentioned water management policy is specified. Next, the operator specifies the cost, that is, sets the charge per unit power. Since the power charge may differ depending on the location of the water treatment plant, the power charge can be set per water transmission system. FIG. 11 is an example of a screen for inputting the cost, that is, the charge per unit power, so that multiple periods (start date and time, end date) and power charge (yen / kWh) can be specified on the power charge setting screen for each water transmission system. I have to. And the operator is the restriction item of the plant equipment 5, upper and lower limit of water level of water distribution equipment, water retention time, upper and lower limit of water supply quantity for pump equipment and valve equipment equipment, increase and decrease width of water supply quantity, valve For equipment, set the upper and lower limit values of water supply for 24 hours. FIG. 12 is an example of a screen for setting the water level of the reservoir facility, and shows an example of specifying the upper limit value and the lower limit value in 24 hours.

  After designating the conditions for water flow rate calculation on the three screens of FIGS. 10 to 12, the water flow rate calculation is executed from the screen (step 303). The system diagram shown in FIG. 9 is provided with a button for instructing start of “water amount calculation”, and the calculation is executed by specifying this. In the calculation of the water supply amount, the optimum water supply amount satisfying the above-mentioned demand amount and satisfying the set operation policy, cost, and constraint is calculated. Then, it is written in the water supply amount calculation value 53. In addition, regarding the calculation result of water supply amount calculation, it has a water supply amount display function which can confirm it (step 304). FIG. 13 is a screen by the water amount display function which displayed graphically the transition of the water supply amount of the calculated pump installation and valve installation. In FIG. 13, while displaying the planned values (dotted line) of the water supply volume of four water supply facilities 76, 77, 78, 79 shown by the systematic diagram of FIG. 24 for 24 hours, the actual values (solid line) for the past 6 hours An example is also shown in which the whole can be confirmed. Furthermore, by specifying the equipment in the system diagram, the water supply volume of each equipment can be confirmed. For example, by specifying the water supply equipment 76 (pump equipment) indicated by ○ in the system diagram of FIG. 14, it is possible to refer to a graph showing a change in water supply amount as shown in FIG. 15. In FIG. 13, the value of the water supply amount at each specific time is displayed on a screen in a table format (not shown) so that it can be confirmed by designating a line of the graph.

  The water supply correction function 163 is a function capable of correcting the water supply individually (step 305). For example, if there is a pool opening on the day and it is necessary to adjust the water supply to increase the water demand for a specific time, it is necessary to individually correct the water supply calculated by the water supply calculation. Use when The procedure and function of water supply correction will be described with reference to the drawings. First, the operator causes the water flow rate display function (step 304) to display the water flow rate on the water flow rate screen of the pump and valve, displays a graph and displays the water flow rate correction screen, and corrects the water flow rate on this screen Do. FIG. 16 shows an example of a screen displayed by the water supply amount display function 163, which is a screen at the time of water supply amount correction, and a correction screen is displayed by specifying a graph. FIG. 17 shows an example of the water supply amount correction screen at that time. The operator designates a graph of the water supply amount to be corrected in FIG. 16 and corrects the water supply amount on the water amount correction screen of FIG. In the water supply amount correction screen, the value of the calculation result is displayed as a correction source, and the water supply amount at the time desired to be corrected can be corrected. The operation value in FIG. 17 is a planned value, and is a value instructed to the plant equipment 5.

The confirmation operation of the water supply amount is performed before the operator transmits the water supply amount determined by the functions up to this point to the controller 4 and starts the operation of the water supply facility. Specifically, by performing evaluation index calculation and water level calculation described later (step 306), the water level of the reservoir facility and the evaluation index are calculated. Then, by referring to the result, the influence of the corrected data is confirmed.
As means for the above confirmation, there are two functions of confirmation by the evaluation index (step 307) and water level trend confirmation (step 308). In the confirmation by the evaluation index (step 307), an index indicating smoothing of the water supply amount by the pump facility and the valve facility, an index indicating the number of times the pump is switched ON / OFF, and three indexes of cost are calculated. The above calculation can be obtained from the following equation. That is, the amount of water supplied by the pump equipment and the valve equipment = (maximum water supply in 24 hours) / (average water supply in 24 hours)
The number of times the pump facility is switched ON / OFF is obtained from the number of changes in the number of operating pumps in 24 hours.
The cost is calculated as the total cost per 24 hours (10,000 yen).

  These three indicators are displayed on a screen (not shown), and it is evaluated that the water supply amount is smoothed as it approaches 1 in the water supply amount by the pump equipment and the valve equipment. In the number of times of ON / OFF switching of the pump, it is evaluated that the water supply amount is smoothed as it approaches 0. Furthermore, the lower the cost, the more efficient the operation.

  In the water level trend confirmation (step 308), the water level is calculated using the corrected water flow rate for all the distribution reservoirs in the system diagram, and the change in water level is calculated for 24 hours using the graph for the past 6 hours Display along with the results. Furthermore, when the limit value of the water level of each distribution facility is exceeded, a mark indicating “over limit value” is displayed on the corresponding facility on the system diagram. The operator can check the graph or check the presence or absence of "limit value over" on the system diagram to determine the presence or absence of the influence of the correction. Further, in the case of graph display, past performance data is superimposed and displayed under the same conditions as described above, and can be compared with the past performance, so the accuracy of confirmation due to the influence of the data after correction increases.

  FIG. 18 is an example of a screen which can refer to the result of distribution reservoir water level calculation. The dotted line in FIG. 18 is the planned value, and the solid line is the measured value. In FIG. 18, the change in the water level for 24 hours is superimposed on the past six hours of actual data and displayed as a graph for the three distribution sources shown in the system diagram of FIG. There is. Furthermore, by specifying each facility on the system diagram, it is possible to display a graph or table of the change in water level in the water supply amount after correction for each facility together with the results for the past six hours for 24 hours. . Using such a function, it is possible to determine the presence or absence of the influence of the data after correction by checking each individual facility. If it is necessary to correct the water supply amount by this influence confirmation, the process returns to the water supply amount correction (step 305) to correct the water supply amount. The water supply amount is determined by repeating the same. The water supply amount is recorded in the water supply amount operation value data 54.

  The water flow control (guide display) function 164 sends the water flow determined by the above function to the controller 4 as operation data, and the controller 4 transmits and controls the water flow to the pump facility and valve facility of the plant facility 5 By this, the operation with the water supply amount obtained above is started (step 309). With regard to the control instruction, a button describing the pump equipment, valve equipment, time, and water supply amount to be controlled for each water purification basin from the water supply operation value data 54 is arranged in time series on the driving guide screen and performed by pressing the button . The operator refers to the graph showing the change in water supply amount as shown in FIG. 15, grasps the transition of the water supply amount up to 24 hours ahead, and sets the current water supply amount by pressing the button on the driving guide screen. The operating value of the water supply amount is sent to the plant data collection control unit 10 for the pump installation and valve installation that need to be performed. Then, the plant data collection control unit 10 transmits to the pump facility and the valve facility in the plant facility 5 and can control the water supply amount. In addition, the button is controlled so that it can be operated at the time when the water supply amount needs to be transmitted, and if it is not operated even if the predetermined time passes from that time, a warning is displayed or the control is completed There is no guide screen button to change color display.

  By executing the functions described above, a water supply plan is created to restore the abnormal state, and the plant facility 5 is instructed to start operation. Thereafter, the distribution reservoir water level monitoring function 165 monitors whether there is any problem in the operation after the start of operation (step 310). The distribution reservoir water level monitoring function 165 monitors, every hour, whether or not the water level of the distribution reservoir facility is normally operated, after the above-described calculation of the amount of water transmission. The operator instructs the start of the distribution reservoir water level monitoring function 165 from the screen. A water level prediction calculation is performed every 24 hours after the start of restoration of the plant facility 5 to monitor whether or not the predicted water level is within the operating water level of the distribution facility. If the water level exceeds the limit value, the water level will be exceeded and a warning will be output. The water supply amount used in the water level prediction calculation is calculated using the water supply amount operation value data 54 obtained by the water supply amount correction and confirmation. When it is diagnosed as abnormal, the trend of the target equipment can be confirmed by changing the item to the water level by the item selection button at the bottom of the graph of FIG. 18 and specifying the equipment by the equipment selection button.

  As described above, according to the present embodiment, it is monitored whether there is any abnormality in the operation of the pump equipment, the valve equipment, and the distribution reservoir equipment during normal operation. When judging an abnormality, use the past data operated and stable in the past. In other words, in the water supply volume of the pump facility and the valve facility, the water level of the distribution facility, compare the present with historical data on which weather conditions such as weather and temperature on the day of operation, weather conditions such as day of the week and holidays approximate If there is any difference, a warning is notified to detect a sign that leads to an abnormality in water operation and notify the operator of the warning. Furthermore, when the warning is notified, the amount of water transmission by the optimum water transmission equipment for the demand of home and factory etc. is calculated for 24 hours from the present, the validity of the data is confirmed and corrected, and the plant equipment is controlled. Have the ability to

  As a result, it is possible to restore from the warning state to the stable operation state and to support the stable operation of the water operation as well as the normal operation support. Also, in the control of plant facilities at the time of recovery, the operation guide screen with the control instruction contents in time series buttons is displayed, and the water quantity of the water supply facility can be controlled by button operation. The amount of operation and control can be done, and appropriate water management can be performed. Also, when it is not in the abnormal state, the contents of the control instruction are displayed on the driving guide screen from the past stable operation result data similar to the current state, and the operation and control can be similarly performed by the button operation. This embodiment can be implemented not only at the time of occurrence of a sign of abnormality, but also at the time of changing the operation plan such as a change of facilities and cost reduction by electric energy, and operates the water transmission facility stably, effectively and efficiently. can do.

  As described above, according to the present embodiment, the operation support device 2 matches the data on the current water level and the water transfer amount in the distribution facility and the water transmission facility with the weather, temperature, and day classification in the distribution facility and the water transmission facility. The historical data on the past water level and water supply volume recorded in the history database 17 are compared, and if the comparison value is in the normal range within the allowable range, it is obtained from the past stable operation history data similar to the current state. The contents of the control instruction are sent to the reservoir facility and water supply facility. Furthermore, in the case of an abnormal condition where the comparison value exceeds the allowable range, the water supply facility necessary to satisfy the supply amount as well as predict the amount of water to be supplied so as to supply the amount corresponding to the demand of the customer. Calculate the amount of water supply in Thus, the plant facility can be stably operated by comparing the present data with the past actual data.

Second Embodiment
FIG. 19 is a block diagram and a flowchart showing the water supply planning unit according to the second embodiment. In the first embodiment, the water supply level water level monitoring unit 9 periodically monitors the water flow rate of the pump facilities and the valve equipment and the water level of the water distribution facility during normal operation, and the water flow level water level monitoring unit 9 diagnoses as abnormal. At the time, the demand forecasting function 161, the water flow calculating function 162, the water flow correcting function 163, and the water flow control (guide display) function 164 explained that the factory or home supplies the necessary amount of water. The execution of the water supply amount calculation function 162, the water supply amount correction function 163, and the water supply amount control (guide display) function 164 is a manual operation. Therefore, except when it is necessary to make individual adjustments such as special conditions for water supply, the optimal water flow rate calculation to be executed when the water flow rate calculation described in the first embodiment is instructed to start, and The on-line unit 6 (computer) of the operation support device 2 can automatically execute the water amount control to control the plant equipment 5 using the water amount, instead of manually, in order to speed up the response at the time of abnormality be able to.

  As shown in FIG. 19, after the demand forecast condition is set (step 300), the following operation is automatically selected or manually performed on the screen (step 400), and when automatic is selected (Step 401) The demand amount prediction 402, the water supply amount calculation 403, the water supply amount control 404 are automatically executed by the computer, and the water supply amount calculated by the water supply amount calculation (step 403) is applied to the pump facility and valve facility. It was made to do. Thereby, the recovery after the water supply amount water level monitoring unit 9 determines that it is abnormal can be smoothly performed. When manual is selected in step 400 (step 405), the water supply amount can be corrected as described with reference to FIG. 6, and the water supply amount can be customized.

Third Embodiment
FIG. 20 is a block diagram and a flowchart showing the water supply planning unit according to the second embodiment. In the first embodiment, the water supply amount for controlling the plant equipment 5 is calculated by the water supply amount calculation function 162, the water supply amount is displayed (step 304), and the water supply amount is corrected (step 305). I mentioned about the case. On the other hand, it is also possible to display the water supply amount data having past results and to correct it by adopting it as operation data (past result water amount display 500). For example, it is possible to switch to the past optimum operation, such as operation under the same conditions as when the highest cost performance was achieved. As described above, operation data having a track record of stable operation in the past is corrected as operation data. That is, based on the data on the amount of water supply that has been in stable operation in the past, the calculated amount of water supply is corrected.

As shown in FIG. 20, the function (step 500) of past actual water supply display can be added, and the historical water supply amount can be displayed from the history database 17 and used as water supply operation value data. Search period (search start date, search end date) as the search key of past data, weather on the day and the next day (fine weather, fine cloud, fine rain, fine snow, fine snow, cloudy cloud, cloudy rain, cloudy rain, cloudy snow, rainy weather, rain cloud, Rainfall, Rainfall, Snowfall, Snowfall, Snow Cloud, Snowfall, Snowfall, Maximum temperature of the day and the next day (with range specified), Classification of the day and the next day (Monday type, Saturday type, Weekday type, Holiday type, GW, tray, new year, water distribution restriction, storm, event, special day) can be specified, so that past actual data can be extracted and corrected.
In the present invention, within the scope of the invention, each embodiment can be freely combined, or each embodiment can be appropriately modified or omitted.

  2 operation support device, 3 control bus, 4 controllers, 17 history database.

Claims (8)

A controller for acquiring data on the water level from the distribution facility and acquiring data on the water supply amount from the water transmission facility;
A control bus for transmitting the data on the water level and the amount of water obtained by the controller;
Water treatment plant operation support that has a history database containing the above water reservoir facilities and the past water level and results data about water transfer volume, and an operation support device that controls the water reservoir facilities and the water facilities In the system
The operation support device is recorded in the history database in which the data regarding the current water level and the water transfer amount in the water distribution facility and the water transmission facility, and the weather, air temperature, and day classification in the water distribution facility and the water transmission facility coincide. Compare the above actual data on past water level and water flow, and if the comparison value is in the normal range within the allowable range, the contents of the control instruction obtained from the above past data with stable operation similar to the current state The water treatment plant operation support system characterized by transmitting to said distribution tank installation and said water transmission installation. A controller for acquiring data on the water level from the distribution facility and acquiring data on the water supply amount from the water transmission facility;
A control bus for transmitting the data on the water level and the amount of water obtained by the controller;
Water treatment plant operation support that has a history database containing the above water reservoir facilities and the past water level and results data about water transfer volume, and an operation support device that controls the water reservoir facilities and the water facilities In the system
The operation support device is recorded in the history database in which the data regarding the current water level and the water transfer amount in the water distribution facility and the water transmission facility, and the weather, air temperature, and day classification in the water distribution facility and the water transmission facility coincide. We compare the above-mentioned actual data about the past water level and water flow volume, and when the comparison value exceeds the allowable range, predict the amount of water to be supplied so as to be able to supply the customer's water demand. And a water treatment plant operation support system for calculating the water supply amount in the water supply facility necessary to satisfy the supply amount. The operation support device has a mode selection to select from the manual mode and the automatic mode,
When the automatic mode is selected in the mode selection, the operation support device automatically predicts the amount of water to be supplied so as to be able to supply the water demand of the customer, and satisfies the supply amount. The water treatment plant operation support system according to claim 2, wherein the amount of water transmission in the water transmission facility necessary for the purpose is calculated. The water treatment plant operation support system according to claim 2, wherein the calculated water supply amount is corrected. Based on the corrected water supply amount, the indicator showing smoothing of the water supply amount by the water transmission equipment, the indicator showing the number of times the water transmission equipment is switched, and confirmation of the water transmission amount with three evaluation indicators consisting of cost indicators The water treatment plant operation support system according to claim 4, characterized in that it is performed. The water treatment plant operation support system according to claim 4 or 5, wherein confirmation of a water level trend in the distribution reservoir facility is performed based on the corrected water supply amount. Calculate the water level forecast up to 24 hours ahead every hour,
The monitoring method according to any one of claims 2 to 6, wherein whether or not the predicted water level obtained by the water level prediction calculation falls within the operating water level of the distribution reservoir facility is monitored. Water treatment plant operation support system. 5. The water treatment plant operation support system according to claim 4, wherein the calculated water supply amount is corrected based on data regarding the water supply amount that has been stably operated in the past.

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