JP2022044510A - Substation monitoring control system - Google Patents

Abstract

To provide a substation monitoring control system by which a state of the control right of a device at an operation terminal can be easily confirmed and a work load on an operator can be reduced, by identifying and displaying success/failure of the control right of the device at the operation terminal.SOLUTION: An HMI 1 for performing a control operation of a device is provided with a 43 switch 2 for switching between a local state for giving an HMI the control right of the device and a remote state for not giving the HMI the control right of the device. The HMI 1 includes: a storage unit 11 that stores switch state information indicating that the 43 switch 2 is in the local state or the remote state; a control right determination unit 13 that determines whether the control right in the HMI 1 is successful or not, based on the switch state information of the 43 switch 2; and a device symbol identification display unit 14 that, based on a determination result of the control right determination unit 13, identifies and displays a symbol of a device in which the control right is successful and a symbol of a device in which the control right is not successful, on an interface screen 15 of a single-line diagram of a power system.SELECTED DRAWING: Figure 2

Description

The present invention relates to a substation monitoring and control system that identifies and displays the presence or absence of control rights of equipment in a substation in an operation terminal.

Generally, a substation monitoring and control system is composed of a monitoring and control server, an operation terminal for controlling equipment in the substation, and a power system protection control device. The substation monitoring and control system is called SAS (Substation Automation System), the monitoring and control server is called SC (Station Computer), the operation terminal is called HMI (Human Machine Interface), and the protection control device is called IED (Intelligent Electronic Device).

Substations in recent years have multiple levels set to have a hierarchical structure. Multiple levels are station level, bay level, process level, etc. from top to bottom. The station level includes the tele-converter device of the upper control center, the centralized monitoring control device, the HMI of the SAS, etc., and the upper level is the network level. The bay level is a hierarchy including bay control devices, local control panels, protection devices, etc. corresponding to each line. Process levels include various devices and local boards for each device. LANs are connected between each level and between devices included in the same level.

The SAS HMI can monitor and control each device from the HMI by granting the control right of the device in the substation. Since a plurality of hierarchical levels are set in the SAS, a plurality of changeover switches (hereinafter referred to as 43 switches in the present specification) for switching the control right of the device are installed in the HMI for each level. The control right of the device in the HMI means the control right from the HMI to the device.

The control right of the equipment from the HMI changes depending on the operational status of the substation, for example, maintenance for each line. In order to realize this change of control right, 43 switches are installed in the HMI. That is, the 43 switch for switching the control right of the device is a switch for switching between the local state in which the control right of the device is given to the HMI side and the remote state in which the control right of the device is not given to the HMI side. 43 Types of switches include software switches that can be switched on and off from the HMI, and physical switches that cannot be switched on and off from the HMI.

In such a SAS, every time the operator controls and operates the equipment in the substation from the HMI, it is necessary to determine whether or not the control right of the equipment is established with respect to the control operation in the HMI. Therefore, a determination logic is adopted to determine the success or failure of the control right of the device. In the determination logic, the switch state information indicating the remote state or the local state of the 43 switches is combined with the operation source information of the operator set for each operator. The operator's operation source information is local operator information indicating that the operator is a local operator, or remote operator information indicating that the operator is a remote operator. That is, in the determination logic, the switch status information of the 43 switches and the operation source information of the operator are acquired, and the logical operators (AND, OR, NOT, XOR, etc.) are used to control the device from the HMI. Outputs success or failure.

If the control right of the device from the HMI is not established, the operator is not permitted to control the device from the HMI. In this case, the operator's control operation becomes an erroneous operation, the operation is treated as a failure, and the operation ends. Since the two-behavior control method is standard for the control operation of general equipment in the substation, the control operation of the equipment is divided into two stages, a selection stage and a control stage. That is, the operator first selects a device from the HMI, and if the operation from the HMI is not permitted due to the failure of the control right, the selected device is released, the operation fails, and the operation ends.

When the operation ends due to a failure, an event message stating that the control operation has failed is displayed on the HMI screen at the same time as the operation ends, and the operator is notified that he / she does not have the control right. According to the above SAS, it is possible to prevent erroneous operation of the equipment by an operator who does not have the control right of the equipment, or erroneous operation of the equipment by the HMI for which the control right of the equipment is not established, and it is safe in SAS operation. It is possible to secure sex.

Japanese Unexamined Patent Publication No. 2008-123118

In a SAS having a plurality of hierarchical levels, the number of 43 switches provided for each level is considerable. Therefore, in the conventional SAS, it is difficult for the operator himself to accurately grasp the success or failure of the control right of the device at the stage when the operator selects the device from the HMI. Therefore, even though there is no control right of the device from the HMI, the operator performs the control operation of the device from the HMI, it is determined that the control right is not established, and the control operation ends in failure.

Whenever a control operation fails, it is necessary to check the status of the control right of the device in the operation terminal. Further, in the conventional SAS, the cause of failure of the control right is not presented. Therefore, it is necessary to investigate the cause of the operation failure by the human system. As a result, if the control operation fails, a large amount of work time is required, and the work load of the operator increases.

In the embodiment of the present invention, by identifying and displaying the success or failure of the control right of the device in the operation terminal, the status of the control right of the device in the operation terminal can be easily confirmed, and the workload of the operator can be confirmed. The purpose is to provide a substation monitoring and control system that can reduce the number of problems.

In order to achieve the above problems, the substation monitoring and control system according to the embodiment of the present invention is provided with an operation terminal for monitoring and controlling the equipment in the substation, and the operation terminal is provided with a changeover switch. The changeover switch is used in a substation monitoring and control system configured to switch between a local state in which a control right which is an operation authority of the device is given to the operation terminal and a remote state in which the control right is not given to the operation terminal. , A storage unit that stores switch status information indicating that the changeover switch is in the local state or a remote state, and operator's operation source information acquired from the outside, and the device for the device based on the information stored in the storage unit. The control right determination unit that determines whether or not the control right from the operation terminal is established, and the control right from the operation terminal by the operator based on the determination result of the control right determination unit. A device symbol identification display unit that identifies and displays the device symbol and the device symbol for which the control right from the operation terminal by the operator is not established on the interface screen of the single connection diagram of the power system. Be prepared.

Block diagram showing the outline of the first embodiment Block diagram of the HMI of the first embodiment The figure which shows the display example of the interface screen of the single connection figure in 1st Embodiment. Block diagram of the HMI of the second embodiment The figure which shows the display example of the interface screen of the single connection figure in 2nd Embodiment Block diagram of the HMI of the third embodiment The figure which shows the display example of the device control interface screen in 3rd Embodiment Block diagram showing the outline of the third embodiment Block diagram of the HMI of the fourth embodiment The figure which shows the flowchart of 4th Embodiment The figure which shows the display example of the interface screen of the changeover control sequence of 43 switches in 4th Embodiment The figure which shows the display example of the interface screen of the changeover control sequence of 43 switches in 4th Embodiment

(First embodiment)
(Constitution)
The first embodiment will be described with reference to FIGS. 1 to 3. FIG. 1 is a block diagram showing an outline of the first embodiment, FIG. 2 is a block diagram of the HMI of the first embodiment, and FIG. 3 is a display example of an interface screen of a single connection diagram in the first embodiment. It is a figure.

Reference numeral 1 shown in FIG. 1 is an HMI for controlling equipment in a substation by SAS. Substations that are monitored and controlled by SAS have a station level and a process level. The network level is set above the station level. As shown in FIG. 1, the substation includes a line A1, a line A2, and a line A Trans. A bay control device 3 is provided for each of these lines, and a local control panel 4 is connected to the bay control device 3.

A 43 switch 2 for switching the control right of the device is provided at the station level and the process level, respectively. A terminal for receiving the state of the lower 43 switch 2 is connected to the 43 switch 2. For example, the 43 switch 2 at the station level is connected to a terminal that receives the state of the 43 switch 2 below the station level. This terminal acts as a logical operator. In the case of AND in the logical operator, the control right is given to HMI1 when all the lower bay control devices 3 are in the remote state R. Further, when all the local states L are reached, all control rights are held on the bay control device 3 side of each line. When the remote state R and the local state L coexist, the control right is different for each line.

The 43 switch 2 at the process level is connected to a terminal that receives the status of the 43 switch 2 of each device under the process level. This terminal also acts as a logical operator. In the case of AND in the logical operator, the control right is held in the local control panel 4 when all the devices below are in the remote state R. In addition, when all are in the local state L, all control rights are held on the local side of each device. When the remote state R and the local state L coexist, the control right differs for each device.

A switch and a local board 5a for controlling the switch and a circuit breaker and a local board 5b for controlling the switch are connected to the process level 43 switch 2 for each line. The components such as the local control panel 4 and the local panels 5a and 5b are shown in the line A1 and the line A2, and although these are not shown in the line A Trans, the line A Trans also has the same configuration as the line A1 and the line A2. Has an element. The 43 switch 2 is also installed in the bay control device 3 and the local boards 5a and 5b.

FIG. 2 shows a block diagram of HMI1. As shown in FIG. 2, the HMI 1 is provided with a storage unit 11, a change detection unit 12, a control right determination unit 13, and a device symbol identification display unit 14. The storage unit 11 acquires switch state information from each of the 43 switches 2, acquires operation source information of the operator from the outside, and stores these information.

The switch state information of the 43 switch 2 is information indicating whether each switch state of the 43 switch 2 is the local state L or the remote state R. The operator's operation source information includes local operator information indicating that the operator is a local operator and remote operator information indicating that the operator is a remote operator.

When the local state or the remote state of the 43 switch 2 is changed, the change detection unit 12 detects the changed switch state information from the 43 switch 2 whose state has been changed. The change detection unit 12 sends the detected switch status information to the storage unit 11 and the control right determination unit 13. The storage unit 11 updates the switch status information of the 43 switch 2 based on the detection result sent from the change detection unit 12.

The control right determination unit 13 operates using logical operators (AND, OR, NOT, XOR, etc.) based on the switch status information of the 43 switch 2 stored in the storage unit 11 and the operation source information of the operator. The determination result that the control right of the device from HMI1 is established or not established by the operator is output. Further, when the control right determination unit 13 receives the switch status information from the change detection unit 12, it outputs a determination result that the control right of the device is established or not established from the switch status information and the operation source information of the operator. The timing at which the control right determination unit 13 determines the success or failure of the control right may be when the change detection unit 12 detects a change in the local state or the remote state of the 43 switch 2, or the switch state of the 43 switch 2 in the storage unit 11. It may be when the memory of information is updated.

If the output of the control right determination unit 13 is that the control right of the device is established, it means that the control right of the device is permitted for the control operation from the HMI1 by the operated operator, and the operator is from the HMI1. It is possible to control and operate the equipment. On the contrary, if the output of the control right determination unit 13 is that the control right is not established, the control right of the device is not granted to the HMI 1 or the operator himself. In this case, the control operation from the HMI 1 by the operator is an erroneous operation.

Based on the determination result of the control right determination unit 13, the device symbol identification display unit 14 establishes the symbol of the device for which the control right from the HMI1 by the operated operator is established and the control right from the HMI1 by the operated operator. The symbols of the devices that are not used are identified and displayed on the interface screen 15 (shown in FIG. 3, hereinafter also simply referred to as the single connection diagram screen 15) of the single connection diagram of the power system.

Since the screen on which the symbol of the device is identified and displayed by the device symbol identification display unit 14 is a screen for displaying the control right of the device, the mode for displaying this screen is called the control right display mode. The control right display mode is shown in the lower part of FIG. In the control right display mode, the device symbol identification display unit 14 displays the color of the line of the frame portion (that is, each side of the rectangle) surrounding the symbol of the rectangular device in another color. Specifically, the device symbol identification display unit 14 displays the line of the frame portion of the symbol of the device for which the control right is established in black, and displays the line of the frame portion of the symbol of the device for which the control right is not established in gray. ..

On the single connection diagram screen 15, a normal display mode is also set in addition to the control right display mode. The normal display mode is shown in the upper part of FIG. In the normal display mode, only the status of the equipment in the substation is displayed. When the single connection diagram screen 15 takes the normal display mode, the device symbol identification display unit 14 identifies and displays the state of the device in the substation on the single connection diagram screen 15. In the normal display mode shown in the upper part of FIG. 3, the device symbol identification display unit 14 identifies and displays a rectangular device symbol in white and gray fills based on the open / closed state of the device.

The device symbol identification display unit 14 can switch between the control right display mode and the normal display mode on the single connection diagram screen 15. Further, as shown in FIG. 3, the mode display button 16 is set to be displayed on the single connection diagram screen 15. When the operator touches the mode display button 16, the device symbol identification display unit 14 switches from the normal display mode (upper side of FIG. 3) to the control right display mode (lower side of FIG. 3) for display.

(Action)
The SAS shown in FIG. 3 includes a line connected to a 110 kV bus and a line connected to a 220 kV bus. Of these, the line connected to the 110 kV bus is operated from the SAS HMI1. In this case, the station level 43 switch 2 is in the local state L, and the control right of the device is held by the SAS HMI1.

The line connected to the 220 kV bus is remotely operated from the host control station. In this case, the station level 43 switch 2 is in the remote state R, and the control right of the device is held by the upper control station. If the line A1 is undergoing repair work, the process level 43 switch 2 is in the local state L, and the local control panel 4 has the control right of the equipment included in the line A1. In this case, the equipment included in the line A1 is not permitted to be operated from the HMI1 as well as from the host control center.

In the above SAS, when the operator touches the mode display button 16 on the single connection diagram screen 15, the normal display mode is switched to the control right display mode. That is, the single connection diagram screen 15 switches from the upper display of FIG. 3 to the lower display. In the device symbol identification display unit 14, in addition to the device status identification display, the device symbol for which the control right from the HMI1 is established and the control right from the HMI1 by the operated operator are established on the single connection diagram screen 15. Distinguish and display the symbol of the device that does not. Specifically, the symbol of the device is displayed in white or gray to indicate the open / closed state of the device, and at the same time, the symbol of the device for which the control right is established displays the line of the frame part in black, and the control right is not established. The symbol of the device of is displayed the line of the frame part in gray.

(effect)
As described above, the success or failure of the control right of the device from the HMI1 is determined based on the switch status information of the 43 switch 2 and the operation source information of the operator, but in the SAS having multiple hierarchical levels, the 43 switch Since it has a large number of 2, even if all the switch states of 43 switch 2 are clearly indicated, the operator can determine the success or failure of the control right of the device from HMI1 just by looking at the switch state of 43 switch 2. It's difficult to figure out.

Therefore, in the first embodiment, the switch state information of the 43 switch 2 and the operation source information of the operator are stored in the storage unit 11, and the control right determination unit 13 stores the HMI 1 based on the information stored in the storage unit 11. The success or failure of the control right of the device is determined, and based on this determination result, the device symbol identification display unit 14 displays the symbol of the device for which the control right is established on the single connection diagram screen 15 in the control right display mode. The symbol of the device for which the control right is not established is identified and displayed. Therefore, the operator can accurately determine the device for which the control right from the HMI1 by the operator is established and the device for which the control right from the HMI1 by the operator is not established, just by looking at the single connection diagram screen 15. It is possible to grasp.

Moreover, in the first embodiment, when the local state or the remote state of the 43 switch 2 is changed, the change detection unit 12 detects the change of the local state or the remote state of the 43 switch 2, and the storage unit 11 detects the change. The switch status information of the 43 switch 2 is updated to reflect the detection result from the unit 12. Therefore, the control right determination unit 13 can determine the success or failure of the control right of the device from the HMI 1 by the operator based on the switch state information of the 43 switch 2 detected by the change detection unit 12.

Therefore, in the first embodiment, it is possible to grasp the success or failure of the control right from the HMI 1 in real time. As a result, even if the 43 switch 2 is forgotten to be returned after the line repair work is completed, the operator can connect the device whose control right is established from HMI1 and the device whose control right is not established from HMI1. It is possible to confirm accurately through the screen 15.

According to the first embodiment as described above, when the control right of the device from the HMI 1 is not established, the operator does not have to worry about erroneously determining that the control right is established, and the device by the HMI 1 is used. It is possible to avoid erroneous operation of the control operation of. As a result, it is not necessary to check the status of the control right of the device every time the control operation fails. As a result, the operator can smoothly control and operate the equipment by the HMI 1, and the work load can be significantly reduced.

(Second embodiment)
(Constitution)
The second embodiment will be described with reference to FIGS. 4 and 5. FIG. 4 is a block diagram of the HMI according to the second embodiment, and FIG. 5 is a diagram showing a display example of the interface screen of the single connection diagram in the second embodiment. The basic components of the second embodiment are the same as those of the first embodiment, and the same components as those of the first embodiment are designated by the same reference numerals and description thereof will be omitted. In the storage unit 11 of the second embodiment, in addition to the switch status information of the 43 switch 2 and the operation source information of the operator, the account information of the user who switched the 43 switch 2 and the switching of the 43 switch 2 are performed. The time information and the time information are stored as control right related information.

As shown in FIG. 4, the HMI 6 according to the second embodiment is provided with an information display unit 17 in addition to the above components. When the operator brings the interface cursor close to the symbol of the device displayed on the single connection diagram screen 15 to a certain distance, the information display unit 17 stores it in the pop-up dialog box 18 (shown in FIG. 5) in the storage unit 11. Display the information that has been added. FIG. 5 shows a display example of the pop-up dialog box 18.

As shown in FIG. 5, the pop-up dialog box 18 has been changed to "line and device name", "currently controlling side", and "current control right" including the device to which the operator has brought the interface cursor close to it. "Time and administrator" is displayed. The "time and administrator changed to the current control right" is derived from the control right-related information stored in the storage unit 11. That is, the "time changed to the current control right" is derived from the time information at the time of switching the 43 switch 2, and the "administrator changed to the current control right" is derived from the account information of the user who switched the 43 switch 2. It will be taken.

When the operator moves the interface cursor away from the symbol of the device on the single connection drawing screen 15 by a certain distance or more, the information display unit 17 ends the display of the pop-up dialog box 18. The information display unit 17 enables the display of the pop-up dialog box 18 only in the control right display mode, and invalidates the display of the pop-up dialog box 18 in the normal display mode. Therefore, in the normal display mode, the pop-up dialog box 18 is not displayed even if the operator brings the interface cursor close to the symbol of the device on the single connection diagram screen 15.

(Action and effect)
In the second embodiment having the above configuration, the storage unit 11 has control right-related information including account information of the user who switched the 43 switch 2 and time information at the time of switching the 43 switch 2, and the 43 switch. It is stored as the switch status information of 2 and the operation source information of the operator. Then, when the operator operates the mode display button 16 to set the unit diagram screen 15 to the control right display mode and then brings the interface cursor closer to the symbol of the device, the information display unit 17 is displayed in the pop-up dialog box 18. It is possible to display "the name of the line and the device" including the device to which the cursor is moved, "the side currently having the control right", and "the time and the administrator who changed to the current control right".

Therefore, the operator efficiently controls the line including the device, the name of the device, the side currently having the control right, the time when the control right is changed, and the manager for the device to which the interface cursor is brought close to the device through the single connection diagram screen 15. You can get to know it well. Therefore, the operator can clearly grasp the status of the control right of the device that can be controlled from the HMI 6.

For example, by looking at the display of "time changed to the current control right and the administrator", the operator can see when the 43 switch 2 was switched even if the control right of the device from the HMI 6 was not established. , Who did it, and so on. Therefore, even if the control right of the device from the HMI 6 is not established, the operator can calmly infer the cause and take appropriate measures toward the establishment of the control right. .. According to such a second embodiment, it is possible to further reduce the work load of the operator.

Further, in the second embodiment, the display of the pop-up dialog box 18 is valid only in the control right display mode, and there is a concern that the display of the device status is hidden by the pop-up dialog box 18 on the single connection drawing screen 15 in the normal display mode. There is no. Therefore, in the second embodiment, good operational visibility can be maintained.

(Third embodiment)
(Constitution)
The third embodiment will be described with reference to FIGS. 6 to 8. FIG. 6 is a block diagram of the HMI of the third embodiment, and FIG. 7 is a diagram showing a display example of the device control interface screen of the third embodiment. FIG. 8 is a block diagram showing an outline of the third embodiment. The basic components of the third embodiment are the same as those of the first embodiment, and the same components as those of the first embodiment are designated by the same reference numerals and description thereof will be omitted.

As shown in FIG. 6, in the HMI 7 according to the third embodiment, in addition to the above components, a switch specifying unit 19, a switch information display unit 20, a list display unit 21, and a warning unit 22 are included. Is provided. The switch specifying unit 19 specifies the 43 switch 2 that caused the determination when the control right determination unit 13 determines that the control right has not been established in the HMI 7 as the switch to be switched. The switch information display unit 20 displays information about the 43 switches specified by the switch identification unit 19 on the device control interface screen 23.

In the example of the device control interface screen 23 shown in FIG. 7, the local control panel 4 and the bay control device 3 in the line A Trans are shown as the switching target 43 switches, and it is shown that they are switched from the local state to the remote state. .. Specifically, the switch information display unit 20 displays "43 local control panel Local → Remote" and "43 bay control device Local → Remote" on the device control interface screen 23 as "43 switches to be switched". do. On the device control interface screen 23 of FIG. 7, it is displayed that it is the local control panel 4 that "currently has the control right" in the line A Transfer. In the third embodiment, the state in which the local control panel 4 has the control right is as shown in FIG.

As shown in FIG. 7, in the list display unit 21, the upper control station is in the remote state (R1) in the line A Trans, and the SAS, the bay control device 3, the local control panel 4, and the local panel 5 of the device are in the local state (R1). Local), and the fact that the local board 5 of the device is in the remote state (Remote) is listed and displayed on the device control interface screen 23. When the control right determination unit 13 determines that the control right of the device in the HMI 7 is not established, the warning unit 22 uses this determination as a warning message "The control execution is blocked by the control right" to control the device. It is displayed on the interface screen 23.

(Action and effect)
In the third embodiment as described above, the list display unit 21 lists that the 43 switch 2 is in the local state or the remote state for each level and displays it on the device control interface screen 23. Therefore, the operator can efficiently grasp the switch state of the 43 switch 2 in the entire substation.

Further, in the third embodiment, when the control right determination unit 13 determines that the control right of the device from the HMI 7 is not established, the warning unit 22 warns that "control execution is blocked by the control right". Is displayed on the device control interface screen 23. Therefore, the operator can immediately grasp that the control right of the device from the switch state HMI 7 has not been established, and can quickly shift the measures for the establishment of the control right.

Further, in the third embodiment, the switch specifying unit 19 identifies the 43 switch 2 that caused the determination that the control right of the device is not established from the HMI 7 as the switching target 43 switch, and the switch information display unit 20 determines. The 43 switch 2 to be switched is displayed on the device control interface screen 23. Therefore, the operator can accurately recognize which 43 switch 2 should be switched from the local state to the remote state to change the control right from the HMI 7 from non-establishment to establishment. As a result, it is possible to efficiently carry out the switching work of the 43 switch 2 for establishing the control right for the device for which the control right from the HMI 7 is not established.

(Fourth Embodiment)
(Constitution)
The fourth embodiment will be described with reference to FIGS. 9 to 12. 9 is a block diagram of the HMI of the fourth embodiment, FIG. 10 is a diagram showing a flowchart of the fourth embodiment, and FIGS. 11 and 12 are interface screens of the switching control sequence of 43 switches in the fourth embodiment. It is a figure which shows the display example of. The basic components of the fourth embodiment are the same as those of the third embodiment, and the same components as those of the third embodiment are designated by the same reference numerals and the description thereof will be omitted.

As shown in FIG. 9, the HMI 8 according to the fourth embodiment includes a changeover switch control unit 24, a switch determination unit 25, and a non-switchable message display unit 26, in addition to the above components. .. The changeover switch control unit 24 switches the changeover target switch specified by the switch identification unit 19 from the remote state to the local state.

The switch determination unit 25 determines whether or not the switch to be switched is a switch that is permitted to be switched from the remote state to the local state by the changeover switch control unit 24. When the switch determination unit 25 determines that the switch to be switched is a switch that is not permitted to be switched from the remote state to the local state by the changeover switch control unit 24, the changeover impossible message display unit 26 is switched by the changeover switch control unit 24. An alarm message indicating that the switch cannot be performed is displayed on the interface screen 27 of the switching control sequence of the 43 switches (see FIG. 11). Further, in the fourth embodiment, confirmation is obtained from the operator when the automatic switching by the changeover switch control unit 24 is executed (see FIG. 12). When the "execute" button is pressed on the screen shown in FIG. 12, switching execution is performed, and when the "cancel" button is pressed, the selection / control operation ends.

As described above, the two-behavior control method is standard for general equipment control operations in a substation. In the two-behavior control method, the operation is divided into two stages, a selection stage and a control stage. Therefore, in the fourth embodiment, the operation is performed as shown in the flowchart of FIG. First, a device is selected from HMI8 (S01), and an operation confirmation test is performed (S02). If the result of the operation confirmation test fails, the selection is canceled (S03).

If the result of the operation confirmation test is passed, the condition of the control right is determined (S04). If the control right is established, an device selection command is issued to the IED (S05). If the control right is not established, the cause of determining the failure of the control right, that is, the cause of failure in the establishment of the control right is shown (S06). Subsequently, 43 switch 2 that needs to be switched in order to be in a state where control can be executed by the switch specifying unit 19 specifying the switch to be switched is shown (S07).

Next, it is confirmed whether the 43 switch 2 of the local control panel 4 or the 43 switch 2 under the local control panel hierarchy is in the remote state (S08). If the 43 switch 2 is not in the remote state (No in S08), the 43 switch 2 is in the local state and is deselected (S03). Here, if the 43 switch 2 to be switched is the 43 switch 2 of the local control panel 4 or the 43 switch 2 below the hierarchy of the local control panel 4, these 43 switches 2 are the changeover switch control unit 24. It is a physical 43 switch 2 that cannot be switched by. Therefore, the switch determination unit 25 determines that the 43 switch 2 to be switched is a switch that is not permitted to be switched from the remote state to the local state by the changeover switch control unit 24.

When the 43 switch 2 to be switched is such a switch, the non-switchable message display unit 26 displays a message to the effect that the switch cannot be switched by the changeover switch control unit 24 on the interface screen 27 of the changeover control sequence of the 43 switch. do. The interface screen 27 of the changeover control sequence of the 43 switches in FIG. 11 is a screen display when an alarm message is displayed to the operator when the changeover switch control unit 24 cannot automatically switch.

As shown in FIG. 11, the non-switchable message display unit 26, as <Caution>, states that "the 43 switches under the local control panel or the local control panel hierarchy do not support the automatic switching control of the system, so that the control operation is performed. Will end as a failure. " The "OK" button on this screen is a button for receiving approval of the alarm message from the operator.

43 If the switch 2 is in the remote state (Yes in S08), the changeover switch control unit 24 can switch from the remote state to the local state. At this time, the switch information display unit 20 displays the 43 switch 2 that switches the switch state from the local state to the remote state on the interface screen 28 of the switching control sequence of the 43 switches, and switches the corresponding 43 switches 2 by the switching control sequence. Confirm with the operator regarding the implementation (S09). If confirmation from the operator cannot be obtained (No in S09), the selection is canceled (S03).

After confirmation from the operator is obtained from the screen display shown in FIG. 12 (Yes in S09), when the operator touches the "execute" button, the changeover switch control unit 24 changes the changeover target switch from the local state to the remote state. Switching is performed to switch and execute each of the 43 switches 2 (S10), the operation of the selected device is continued in the control stage, and a device selection command is issued to the IED (S05).

In the fourth embodiment, unless the condition that the output by the control right determination unit 13 is satisfied or the condition that the operation cancel command from the operator is received by touching the "cancel" button is satisfied. The operation is put on hold in the selected state. If either of the above two conditions is not satisfied by the predetermined time-out time, the operation is terminated.

(Action and effect)
In the fourth embodiment as described above, the changeover switch control unit 24 can switch the switch to be changed specified by the switch identification unit 19 from the local state to the remote state. Therefore, the control right of the device from the HMI 8 is related. The determination will change from unsuccessful to successful, and the operator can control the equipment from the HMI8. Therefore, the operator can easily perform the switching work of the 43 switches, and the work load is reduced.

Further, in the fourth embodiment, even when the switch specifying unit 19 specifies the switching target switch, the switching target switch is first changed by the switch determination unit 25 by the switch determination unit 25 instead of immediately performing the switching operation of the 43 switches. It is determined whether or not the switch is allowed to switch from the local state to the remote state by 24. When the switch determination unit 25 determines that the switch to be switched is a switch that is not permitted to be switched from the local state to the remote state by the changeover switch control unit 24, the changeover switch control unit 26 controls the changeover switch. A message to the effect that switching by unit 24 is not possible is displayed on the interface screen 27 of the switching control sequence of the 43 switches. Therefore, there is no concern that the operator erroneously operates the control operation of the device by the HMI 8 while the switch to be switched is not switched from the local state to the remote state by the changeover switch control unit 24. As a result, it is possible to reliably avoid erroneous operation of the control operation of the device by the HMI 8, and it is possible to reduce the work load of the operator.

(Other embodiments)
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 embodiments, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and variations thereof are included in the scope of the invention described in the claims and the equivalent scope thereof, as are included in the scope and gist of the invention.

For example, in the first embodiment, the device symbol identification display unit 14 uses the symbol of the device for which the control right from the HMI1 is established and the symbol of the device for which the control right from the HMI1 by the operated operator is not established. Although it is identified and displayed by the color of the line in the frame surrounding the symbol of, it is not limited to the color of the line. That is, the symbol of the device for which the control right from HMI1 is established and the symbol of the device for which the control right from HMI1 by the operated operator is not established can be appropriately selected as long as it is an identifiable display, for example. , The shape and pattern of the symbol may be changed between the symbol of the device for which the control right is established and the symbol of the device for which the control right is not established.

Further, in the second embodiment, the information display unit 17 may display the switch state information detected by the change detection unit 12, that is, the change of the switch state information. Further, the information display unit 17 may display the change of the determination result when the control right determination unit 13 outputs a determination result different from the conventional determination result. In the embodiment having such an information display unit 17, when the operator brings the interface cursor close to the symbol of the device displayed on the single connection diagram screen 15, the switch status information of the 43 switch 2 is changed and the control right determination unit is used. The change of the determination result of 13 can be displayed. As a result, the operator can perform the control operation more efficiently, and the work load can be reduced.

1, 6, 7, 8 HMI
2 43 Switch 3 Bay control device 4 Local control panel 5a, 5b Local panel 11 Storage unit 12 Change detection unit 13 Control right determination unit 14 Device symbol display unit 15 Single connection diagram interface screen 16 Mode display button 17 Information display unit 18 Pop-up Dialog box 19 Switch specific unit 20 Switch information display unit 21 List display unit 22 Warning unit 23 Device control interface screen 24 Switch switch control unit 25 Switch judgment unit 26 Non-switchable message display unit 27, 28 43 Switch switching control sequence interface screen

Claims (7)

An operation terminal for monitoring and controlling the equipment in the substation is provided, a changeover switch is installed in the operation terminal, and the changeover switch gives the control right which is the operation authority of the equipment to the operation terminal in a local state. And in a substation monitoring and control system configured to switch to a remote state in which the control right is not given to the operation terminal.
A storage unit that stores switch status information indicating that the changeover switch is in the local state or remote state and operator's operation source information acquired from the outside.
A control right determination unit for determining whether or not a control right for the device from the operation terminal is established based on the information stored in the storage unit, and a control right determination unit.
The symbol of the device in which the control right from the operation terminal by the operator is established based on the determination result of the control right determination unit and the symbol of the device in which the control right from the operation terminal by the operator is not established. And, the device symbol identification display unit that identifies and displays on the interface screen of the single connection diagram of the power system,
Substation monitoring and control system equipped with. A change detection unit for detecting a change in the state of the changeover switch when the local state or the remote state of the changeover switch is changed is provided.
The storage unit updates the switch status information of the changeover switch based on the detection result from the change detection unit.
The substation monitoring and control system according to claim 1, wherein the control right determination unit receives the detection result of the change detection unit and determines the success or failure of the control right. The storage unit stores at least one of the account information of the user who switched the changeover switch and the time information at the time of switching the changeover switch as control right related information.
Claim 1 or 2 provided with an information display unit that displays information stored in the storage unit when the operator brings the interface cursor close to the symbol of the device displayed on the interface screen of the power system unit diagram. Substation monitoring and control system described in. When the control right determination unit determines that the control right has not been established in the operation terminal, the switch identification unit that specifies the changeover switch that caused the determination as the changeover target switch, and the switch identification unit.
The substation monitoring control system according to any one of claims 1 to 3, further comprising a switch information display unit that displays information about the switch to be switched on an interface screen for device control. The substation monitoring and control system according to claim 4, further comprising a switching control unit for switching the switching target switch specified by the switch specifying unit from a remote state to a local state. A switch determination unit that determines whether or not the switch to be switched is a switch that is permitted to switch from the remote state to the local state by the change control unit.
When the switch determination unit determines that the switch to be switched is a switch for which switching from the remote state to the local state is not permitted by the switching control unit, a message indicating that switching by the switching control unit cannot be performed is displayed. The substation monitoring and control system according to claim 5, further comprising a message display unit. A substation monitoring and control system that sets multiple levels so that it has a hierarchical structure and monitors and controls the equipment on a level-by-level basis, and lists whether the changeover switch is in the local state or the remote state for each level. The substation monitoring and control system according to any one of claims 1 to 6, further comprising a list display unit for displaying the image.

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