Discharge operation device and discharge operation method

Abstract

To provide a discharge operation device and a discharge operation method that can reduce the burden on an operator.SOLUTION: A discharge operation device according to an embodiment is a device related to the management of a dam. The discharge operation device comprises control means that executes arithmetic processing related to the management of the dam, and display means that displays a screen for changing a constant used for the arithmetic processing. In response to an operator's operation, the control means displays, on the screen, how the change of the constant affects the management of the dam and a related constant that is required to be changed in relation to the change of the constant.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] Embodiments of the present invention relate to a discharge operation device and a discharge operation method.

Background Art

[0002] A control processing facility for dam management (hereinafter referred to as "dam controller") is a facility for performing arithmetic processing related to the water flow management of a dam, operating a discharge facility, and assisting the operation in order to reliably and easily operate the discharge facility based on operation rules and the like.

[0003] The dam controller executes various arithmetic processes, such as the arithmetic processes related to the above-described water flow management, using various constants. Among the constants used in such arithmetic processes, there are constants related to other constants and constants that can be changed. When the value of a constant that can be changed is changed by an operator of the dam controller, the change of the constant may have a great impact on the dam controller. Further, when the value of a constant that can be changed is changed, it is necessary to change the value of a constant related to the constant.

[0004] By the way, a discharge operation device included in the dam controller is equipped with a function of displaying a list of constants that can be changed. However, since it is left to the operator's judgment which constant to change and how to change it, the operator must grasp the influence of changing a constant that can be changed and the existence of other constants related to the constant. This is a great burden on the operator, and the realization of a new technology that can reduce such a burden is desired.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Patent Document 3

Non-Patent Literature

[0006]

Non-Patent Literature 1

Summary of the Invention

Problems to be Solved by the Invention

[0007] The problem to be solved by the present invention is to provide a discharge operation device and a discharge operation method capable of reducing the burden on an operator.

Means for Solving the Problems

[0008] A discharge operation device according to an embodiment is a device related to dam management. The discharge operation device includes control means for executing arithmetic processing related to dam management, and display means for displaying a screen for changing constants used in the arithmetic processing. The control means displays, on the screen, how the change of the constant affects the dam management and related constants that need to be changed in relation to the change of the constant, in response to an operation by an operator.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

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Figure 9

Figure 10

MODE FOR CARRYING OUT THE INVENTION

[0010] Hereinafter, embodiments will be described with reference to the drawings. FIG. 1 is a block diagram showing an example of the hardware configuration of a dam management system including a discharge operation device according to an embodiment. The dam management system according to this embodiment is a system including an input / output processing device 1, a remote manual operation device 2, a control system LAN (Local Area Network) 3, an information system LAN 4, an information input / providing device 5, a training device 6, a first discharge operation device 10, and a second discharge operation device 20.

[0011] The input / output processing device 1 and the remote manual operation device 2 are connected to the control system LAN 3. Also, the information input / providing device 5 and the training device 6 are connected to the information system LAN 4. The first discharge operation device 10 and the second discharge operation device 20 are connected to both the control system LAN 3 and the information system LAN 4. Here, the first discharge operation device 10 and the second discharge operation device 20 function as redundant systems for each other's devices.

[0012] The input / output processing device 1 and the remote manual operation device 2 are devices for remotely controlling various facilities of the dam, and are realized, for example, as a PLC (Programmable Logic Controller).

[0013] The information input / providing device 5 and the training device 6 are realized, for example, as an industrial computer (Factory Automation PC: FA-PC).

[0014] The information input / providing device 5 is used to input various information into the dam management system and provide various information. The various information is displayed, for example, on the first discharge operation device 10 and the second discharge operation device 20.

[0015] The training device 6 is a device for an operator to acquire, for example, flood-related operations such as discharge plan formulation at the start of discharge and determination of the transition time of the discharge method.

[0016] The first discharge operation device 10 and the second discharge operation device 20 provide, in response to an operator's operation, a start command, a gate opening command, a closing command, or a target opening degree, etc., to the input / output processing device 1 via the control system LAN 3. The control signal provided to the input / output processing device 1 is output to the dam gate via an operation panel (not shown).

[0017] FIG. 2 is a block diagram showing an example of the functional configuration of the first discharge operation device 10. Since the second discharge operation device 20 also has a similar functional configuration, the description of the functional configuration of the second discharge operation device 20 is omitted here.

[0018] The first discharge operation device 10 includes a control unit 11, a display unit 12, an operation unit 13, a communication unit 14, and a storage unit 15. The first discharge operation device 10 is composed of, for example, a computer including a processor such as a CPU (Central Processing Unit) or an MPU (Micro Processing Unit), a ROM (Read Only Memory), and a RAM (Random Access Memory).

[0019] The control unit 11 performs various controls of the first discharge operation device 10. The control unit 11 includes a display control unit 11a and a constant management unit 11b.

[0020] The display control unit 11a performs display control for displaying various screens on the display unit 12. The constant management unit 11b performs processing for managing and changing various constants used in arithmetic processing related to the management of the dam.

[0021] The display unit 12 is, for example, a display monitor or a liquid crystal panel display, and displays various screens according to the display control by the display control unit 11a.

[0022] The operation unit 13 is an input interface (for example, a mouse or a keyboard) that receives the dam management operation by the operator. Although details will be described later, the dam management operation includes, for example, an operation of changing a constant that can be changed by the operator.

[0023] The communication unit 14 is connected to the control system LAN 3 and the information system LAN 4, and controls communication with each of the LANs 3 and 4.

[0024] The storage unit 15 is, for example, a hard disk drive (HDD), and stores a program for controlling the dam executed by the control unit 11. Further, the storage unit 15 stores the constant data 15a. Furthermore, the storage unit 15 stores screen templates (for example, screen templates related to a screen for changing a constant that can be changed) related to various screens displayed on the display unit 12.

[0025] The constant data 15a is data related to constants used in arithmetic processing related to the management of the dam, and is data in which at least the name of the constant and the current setting value are associated.

[0026] FIG. 3 is a flowchart showing an example of the procedure of the detailed information display process according to the present embodiment. The detailed information display process shown in FIG. 3 is mainly executed by the control unit 11 of the first discharge operation device 10 or the second discharge operation device 20. Here, the case where the detailed information display process is executed by the control unit 11 of the first discharge operation device 10 will be described.

[0027] In step S1, the display control unit 11a of the control unit 11 causes the display unit 12 to display a screen for changing constants related to a predetermined item (predetermined theme) related to dam management in response to a dam management operation by the operator. The screen includes a list of constants that can be changed related to the predetermined item (hereinafter referred to as the constant change screen). For example, the display control unit 11a causes the display unit 12 to display a constant change screen including a list of constants that can be changed related to the rainfall station warning determination value. Alternatively, the display control unit 11a causes the display unit 12 to display a constant change screen including a list of constants that can be changed related to the inflow rate table (normal storage level). In addition, the display control unit 11a can cause the display unit 12 to display various other constant change screens.

[0028] Here, to supplement the process of step S1, first, when an operation for displaying a constant change screen related to a predetermined item related to dam management is performed by the operator, the display control unit 11a reads out a screen template related to the constant change screen and constant data 15a related to the constants that can be changed related to the predetermined item from the storage unit 15 via the constant management unit 11b. Thereafter, the display control unit 11a assigns the current setting value of the constant indicated by the read constant data 15a to the read screen template, and causes the display unit 12 to display the constant change screen related to the above-described predetermined item.

[0029] In step S2, when the screen close button in the constant change screen is pressed by the operator (Yes in step S2), the display control unit 11a performs a process of closing the constant change screen and terminates a series of processes here. On the other hand, in step S2, when the above-described screen close button is not pressed by the operator (No in step S2), the display control unit 11a executes the process of step S3 described below.

[0030] In step S3, when the detailed button on the constant change screen is pressed by the operator (Yes in step S3), the display control unit 11a executes the process of step S4 described later. On the other hand, in step S3, when the above-described detailed button is not pressed (No in step S3), the process returns to step S2, and the same process is executed again.

[0031] In step S4, the display control unit 11a causes the detailed information of the constant that can be changed corresponding to the pressed detailed button to be pop-up displayed on the constant change screen displayed on the display unit 12. The detailed information includes information indicating the influence of the change of the constant corresponding to the pressed detailed button on the dam management (hereinafter referred to as influence information), and information indicating other constants that need to be changed in relation to the change of the constant (hereinafter referred to as related constants).

[0032] In step S5, when the pop-up close button in the pop-up window displayed on the constant change screen is pressed by the operator (Yes in step S5), the display control unit 11a executes the process of step S6 described later. On the other hand, in step S5, when the pop-up close button in the pop-up window displayed on the constant change screen is not pressed by the operator (No in step S5), the process returns to step S5, and the same process is executed again.

[0033] In step S6, the display control unit 11a closes the pop-up window displayed on the constant change screen. After executing the process of step S6, the process returns to step S2, and the same process is executed again.

[0034] FIG. 4 is a diagram showing an example of the constant change screen. In FIG. 4, as an example of the constant change screen, a constant change screen 100 for changing a constant that may be related to the rainfall station warning determination value is shown.

[0035] As shown in FIG. 4, the constant change screen 100 for the rainfall station warning determination value includes, within the screen, a screen close button 101, a list 102 of constants that can be changed, a detail button 103, and a setting button 104.

[0036] The screen close button 101 is a button for closing the constant change screen 100. The operator can end the display of the constant change screen 100 by pressing this screen close button 101.

[0037] In the list 102 of constants that can be changed, for example, the station name (facility name), item, unit, and set value are associated with each other. The station name indicates the name of the rainfall station that observes rainfall. The item is a constant related to the rainfall observed (measured) at the rainfall station indicated by the associated station name, and indicates the name of the constant that can be changed. The unit indicates the unit of the constant that can be changed indicated by the associated item. The set value indicates the current set value of the constant that can be changed indicated by the associated item.

[0038] Note that in FIG. 4, as constants that can be changed related to the rainfall station warning determination value, the 10-minute rainfall upper limit value, 30-minute rainfall upper limit value, 60-minute rainfall upper limit value, hourly rainfall upper limit value, cumulative rainfall upper limit value, telemeter call shortening condition (hourly rainfall), and telemeter call shortening condition (cumulative rainfall) are shown.

[0039] For example, in the first row L1 on the left side of the figure in the list 102 of constants that can be changed, the station name "basin average", item "10-minute rainfall upper limit value", unit "mm / 10min", and set value "20" are associated with each other. According to this, it is shown that the "10-minute rainfall upper limit value" of the "basin average", which is the average of each rainfall station, is set to "20 [mm / 10min]".

[0040] Also, in the 8th line L8 on the left side of the figure of the list 102 of constants that can be changed, the station name "Rainfall Station 01", the item "Upper limit value of 10-minute rainfall", the unit "mm / 10min", and the set value "20" are associated with each other. According to this, it is shown that the "Upper limit value of 10-minute rainfall" of "Rainfall Station 01" is set to "20 [mm / 10min]".

[0041] Here, although the 1st line L1 and the 8th line L8 on the left side of the figure of the list 102 of constants that can be changed are specifically described, the same applies to the other lines of the list of constants that can be changed.

[0042] Both the detail button 103 and the setting button 104 are provided for each constant that can be changed. The detail button 103 is provided, for example, near the name of the constant that can be changed indicated by the item. Also, the setting button 104 is provided, for example, near the current set value of the constant that can be changed indicated by the set value. Note that the positions where the detail button 103 and the setting button 104 are provided are not limited to this, and the detail button 103 and the setting button 104 may be provided at any position within the constant change screen 100.

[0043] The detail button 103 is a button for pop-up displaying detailed information regarding the corresponding constant that can be changed on the constant change screen 100. By pressing this detail button 103, the operator can display a pop-up window showing the above-mentioned detailed information on the constant change screen 100.

[0044] The setting button 104 is a button for setting and changing the value of the corresponding constant that can be changed. By pressing this setting button 104, the operator can set and change the value of the corresponding constant that can be changed to the value input as the set value.

[0045] FIG. 5 is a diagram showing an example of a pop-up window displayed on the constant change screen 100. In FIG. 5, it is assumed that the detailed button 103 corresponding to the "upper limit value of 10-minute rainfall amount" of "basin average" included in the constant change screen 100 shown in FIG. 4 is pressed by the operator.

[0046] As shown in FIG. 5, the pop-up window 105 displayed on the constant change screen 100 includes, as detailed information, impact information and information indicating related constants. Note that the pop-up window 105 may also be referred to as a constant guidance window 105.

[0047] As described above, the impact information indicates the impact of the change in the constant corresponding to the pressed detailed button 103 on the dam management. In FIG. 5, since it is assumed that the detailed button 103 corresponding to the "upper limit value of 10-minute rainfall amount" of "basin average" is pressed, as the impact when the "upper limit value of 10-minute rainfall amount" of "basin average" is changed, the message "System impact: Changing the rainfall amount upper limit value affects the reference value to be alerted." is displayed within the constant guidance window 105.

[0048] Also, in FIG. 5, as information indicating related constants, as other constants that need to be changed when the "upper limit value of 10-minute rainfall amount" of "basin average" is changed, the "upper limit value of 30-minute rainfall amount", "upper limit value of 60-minute rainfall amount", "upper limit value of hourly rainfall amount", and "upper limit value of cumulative rainfall amount" are displayed within the constant guidance window 105.

[0049] In this way, by pop-up displaying, as detailed information, the impact on the dam management when a changeable constant is changed and other constants that need to be changed in relation to the change of the constant, the operator can grasp these even if they did not previously know the impact of changing a changeable constant and the existence of other constants related to the constant, and can appropriately judge whether it is possible to change a changeable constant. Also, it is possible to prevent omissions in changing related constants.

[0050] FIG. 6 is a diagram showing an example of a constant change screen different from FIG. 4. In FIG. 6, as an example of the constant change screen, a constant change screen 110 for changing constants that can be changed related to the inflow rate meter (positive storage level) is shown.

[0051] As shown in FIG. 6, the constant change screen 110 related to the inflow rate meter, similar to the constant change screen 100 shown in FIG. 4, includes a screen close button 111, a list 112 of constants that can be changed, a detail button 113, and a setting button 114. Note that since the screen close button 111, the detail button 113, and the setting button 114 have the same functions as the screen close button 101, the detail button 103, and the setting button 104 shown in FIG. 4, detailed descriptions thereof are omitted here.

[0052] In the list 112 of constants that can be changed, for example, the calculation method, item, unit, and set value are associated with each other. The calculation method indicates the name of the method (for calculating the inflow rate). The item is a constant related to the associated calculation method and indicates the name of the constant (setting) that can be changed. The unit indicates the unit of the constant that can be changed indicated by the associated item. The set value indicates the current set value of the constant that can be changed indicated by the associated item.

[0053] Note that in FIG. 6, as constants that can be changed related to the inflow rate meter, the setting of the inflow rate calculation method common to all calculation methods, the number of consecutive missing measurements of the total discharge flow rate and the number of consecutive missing measurements of the virtual inflow rate, the inflow rate smoothing constant and the inflow rate calculation time interval related to the virtual inflow rate method, the minimum inflow rate calculation time related to the storage level change method, the inflow rate calculation time interval and the virtual inflow rate data number related to the least squares method, and the inflow rate calculation formula switching monitoring time, the inflow rate calculation formula switching storage level change amount, the inflow rate calculation formula switching flow rate, and the inflow rate calculation formula switching flow rate dead zone common to the storage level change method and the least squares method are shown.

[0054] For example, in the first line L11 of the list 112 of constants with changeability, the calculation method "common", the item "setting of inflow calculation method", the unit "-(blank)", and the set value "1" are associated with each other. According to this, it is shown that the "setting of inflow calculation method" related to all calculation methods in "common" is set to "1".

[0055] Also, in the fourth line L14 of the list 112 of constants with changeability, the calculation method "virtual inflow method", the item "inflow smoothing constant", the unit "-(blank)", and the set value "10" are associated with each other. According to this, it is shown that the "inflow smoothing constant" of the calculation method "virtual inflow method" is set to "10".

[0056] Here, although the first line L11 and the fourth line L14 of the list 112 of constants with changeability are specifically described, the same applies to other lines of the list of constants with changeability.

[0057] Also, FIG. 6 shows a pop-up window 115 that is displayed when a detailed button 113 corresponding to the "inflow smoothing constant" of the "virtual inflow method" is pressed by an operator.

[0058] The pop-up window 115 shown in FIG. 6, similar to the pop-up window 105 shown in FIG. 5, includes, as detailed information, influence information and information indicating related constants. Note that the pop-up window 115 may also be referred to as a constant guidance window 115.

[0059] In FIG. 6, since it is assumed that the detailed button 113 corresponding to the "inflow smoothing constant" of the "virtual inflow method" is pressed, as an influence when the "inflow smoothing constant" of the "virtual inflow method" is changed, the message "System influence: In the virtual inflow method, a constant that determines the range for taking the average. When it is increased, the change in the inflow becomes smoother, but it becomes difficult to detect a rapid change in the inflow." is displayed within the constant guidance window 115.

[0060] In addition, in FIG. 6, as information indicating related constants, when the "inflow smoothing constant" of the "virtual inflow rate method" is changed, the "inflow calculation time interval" of the "virtual inflow rate method", which is another constant that needs to be changed, is displayed within the constant guidance window 115.

[0061] FIG. 7 is a flowchart showing an example of the procedure of the constant change process according to the present embodiment. The constant change process shown in FIG. 7 is mainly executed by the control unit 11 of the first discharge operation device 10 or the second discharge operation device 20. Here, the case where the constant change process is executed by the control unit 11 of the first discharge operation device 10 will be described.

[0062] In step S11, first, the display control unit 11a of the control unit 11 executes the same process as step S1 in FIG. 3 in response to the dam management operation by the operator, and thereby causes the display unit 12 to display the constant change screen.

[0063] In step S12, the same process as step S2 in FIG. 3 is executed. When the screen close button in the constant change screen is pressed by the operator (Yes in step S12), the display control unit 11a closes the constant change screen and ends the series of processes here. On the other hand, in step S12, when the above-described screen close button is not pressed by the operator (No in step S12), the display control unit 11a executes the process of step S13 described later.

[0064] In step S13, when the setting button in the constant change screen is pressed by the operator (Yes in step S13), the display control unit 11a executes the process of step S14 described later. On the other hand, in step S13, when the above-described setting button is not pressed (No in step S13), the process returns to step S12 and the same process is executed again.

[0065] In step S14, the display control unit 11a causes information for confirming whether a constant that can be changed corresponding to the pressed setting button may be changed to be pop-up displayed on the constant change screen being displayed on the display unit 12. Although details will be described later, the information for confirming whether a constant may be changed includes a button for determining the change (a button for "changing" the constant) and a button for canceling the change (a button for "not changing" the constant).

[0066] In step S15, when the button for "changing" the constant is pressed by the operator (Yes in step S15), the display control unit 11a executes the process of step S16 described later. On the other hand, in step S15, when the button for "not changing" the constant is pressed by the operator (No in step S15), the process returns to step S12 and the same process is executed again.

[0067] In step S16, the display control unit 11a causes information for confirming whether to change related constants of the changed constant to be pop-up displayed on the constant change screen being displayed on the display unit 12. Although details will be described later, the information for confirming whether to change related constants includes a button for changing the related constants (a button for "changing" the related constants) and a button for not changing the related constants (a button for "not changing" the related constants). In step S15, when the button for "changing" the constant is pressed by the operator, the constant management unit 11b executes a process of updating the constant data 15a stored in the storage unit 15 so as to change (rewrite) the value of the constant to the value input as the set value.

[0068] In step S17, when the "change" button for related constants is pressed by the operator (Yes in step S17), the display control unit 11a executes the process of step S18 described below. On the other hand, in step S17, when the "do not change" button for related constants is pressed by the operator (No in step S17), the process returns to step S11, and the same process is executed again. In this case, a constant change screen including a list of constants that may be changed with the values of the constants changed in step S15 reflected is displayed on the display unit 12 as the constant change screen.

[0069] In step S18, the display control unit 11a causes the display unit 12 to display a constant change screen for changing the related constants of the changed constants. At this time, if the related constant is a constant included in the list of constants that may be changed displayed in step S11, the display control unit 11a continues to display the same constant change screen. On the other hand, if the related constant is not a constant included in the list of constants that may be changed displayed in step S11, the display control unit 11a causes the screen to transition to a constant change screen for changing the related constant. Thereafter, the process returns to step S12, and the same process is executed again on the constant change screen for changing the related constants.

[0070] FIG. 8 is a diagram showing an example of a pop-up window displayed on the constant change screen 100. FIG. 8 assumes a case where the setting button 104 corresponding to the "upper limit value of 10-minute rainfall amount" of "basin average" in the constant change screen 100 shown in FIG. 4 is pressed by the operator.

[0071] As shown in FIG. 8, the pop-up window 106 displayed on the constant change screen 100 contains information for confirming whether the constant may be changed. Note that the pop-up window 106 may also be referred to as the constant change window 106.

[0072] As described above, the constant change window 106 includes a button 106a for "changing" the constant and a button 106b for "not changing" the constant. Further, the constant change window 106 includes a message "Do you want to change the constant?" as information for confirming whether the constant may be changed.

[0073] In this way, by the pop-up display of the information for confirming whether to change the constant, it is possible to prevent the operator from accidentally changing the constant.

[0074] FIG. 9 is a diagram showing an example of a pop-up window displayed on the constant change screen 100. FIG. 9 assumes the case where the button 106a for "changing" the constant in the constant change window 106 shown in FIG. 8 is pressed by the operator.

[0075] As shown in FIG. 9, the pop-up window 107 displayed on the constant change screen 100 includes information for confirming whether the related constant may be changed. Note that the pop-up window 107 may be referred to as a related constant change window 107.

[0076] As described above, the related constant change window 107 includes a button 107a for "changing" the related constant and a button 107b for "not changing" the related constant. Further, the related constant change window 107 includes a message "Do you want to change the related constant?" as information for confirming whether the related constant may be changed.

[0077] In this way, by the pop-up display of the information for confirming whether to change the related constant, it is possible to notify the operator of the existence of other constants that need to be changed in relation to the changed constant, so that omission of changing the related constants can be prevented. Also, if a screen for changing the related constant is automatically displayed in response to the change of the constant, it is not preferable for an operator who does not want to change the related constant, but according to this aspect, such a situation can also be prevented.

[0078] Incidentally, in the constant change screen for changing related constants, it is desirable that which constants are the related constants of the changed constant be displayed in an easy-to-understand manner for the operator. For this reason, in the constant change screen for changing related constants, for example, as shown in FIG. 10, the related constants of the changed constant may be highlighted. According to this, the operator can check the related constants at a glance and can also prevent omission of changing the related constants.

[0079] In the above-described embodiment, it is assumed that the constant change screen 100 is displayed on the display unit 12 of the first discharge operation device 10, but it is not limited thereto, and the constant change screen 100 may be displayed on the display unit of the second discharge operation device 20 or other display devices connected via the control system LAN 3 and the information system LAN 4.

[0080] According to the above-described embodiment, the discharge operation devices 10 and 20 include a control unit 11 that executes arithmetic processing related to the management of the dam, and a display unit 12 that displays a constant change screen for changing constants used in the arithmetic processing. The display control unit 11a of the control unit 11 displays, on the constant change screen, how the change of the constant affects the management of the dam and the related constants that need to be changed in relation to the change of the constant. According to such a configuration, it is possible to provide a discharge operation device and a discharge operation method capable of reducing the burden on the operator.

[0081] Although some embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and the equivalent scope thereof.

Explanation of Reference Numerals

[0082] 10…First discharge operation device, 11…Control unit, 11a…Display control unit, 11b…Constant management unit, 12…Display unit, 13…Operation unit, 14…Communication unit, 15…Memory unit, 15a…Constant data, 20…Second discharge operation device, 100, 110…Constant change screen, 101, 111…Screen close button, 102, 112…List of constants that can be changed, 103, 113…Detail button, 104, 114…Setting button, 105…Constant guidance window, 106…Constant change window, 107…Related constant change window.

Claims

1. A discharge operation device related to the management of a dam, control means for executing arithmetic processing related to the management of the dam, display means for displaying a screen for changing constants used in the arithmetic processing, comprising: The control means displays, on the screen, how the change of the constant affects the management of the dam and related constants that need to be changed in relation to the change of the constant, according to an operation by an operator. Discharge operation device.

2. The control means displays, on the screen, information for confirming whether to change the constant, according to an operation to change the constant. The discharge operation device according to claim 1.

3. When the constant is changed, the control means displays, on the screen, information for confirming whether to change the related constants. The discharge operation device according to claim 1.

4. According to an operation to change the related constant, the control means causes the display means to display a screen for changing the related constant. The discharge operation device according to claim 1.

5. According to an operation to change the related constant, the control means highlights the related constant on the screen for changing the related constant. The discharge operation device according to claim 4.

6. A discharge operation method executed by a discharge operation device related to the management of a dam, the discharge operation device executes arithmetic processing related to the management of the dam, the discharge operation device displays a screen for changing constants used in the arithmetic processing, The discharge operation device displays, on the screen, how a change in the constant affects the management of the dam according to an operation by an operator, and related constants that need to be changed in relation to the change in the constant. A discharge operation method comprising the above.

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