JP7451357B2 - Substation monitoring control system - Google Patents

Description

TECHNICAL FIELD The present invention relates to a substation monitoring and control system that identifies and displays the presence or absence of control rights for equipment within a substation on an operating terminal.

In general, a substation supervisory control system includes a supervisory control server, an operation terminal that controls equipment within the substation, and a power system protection control device. The substation monitoring and control system is SAS (Substation Automation System), the monitoring and control server is SC (Station Computer), the operation terminal is HMI (Human Machine Interface), and the protection control device is IED (Intelligent Elect). ronic device).

In recent years, substations have been set up with multiple levels so as to have a hierarchical structure. The plurality of levels include a station level, a bay level, a process level, etc. from top to bottom. The station level includes the teleconverter equipment, central monitoring and control equipment, HMI of SAS, etc. of the upper control center, and the upper level is the network level. The bay level is a layer that includes bay control devices, local control panels, protection devices, etc. that correspond to each line. The process level includes various devices and local boards for each device. Each level and devices included in the same level are connected by a LAN.

The SAS HMI can monitor and control each device from the HMI by being given the right to control the devices in the substation. Since a plurality of hierarchical levels are set in the SAS, the HMI is provided with a plurality of changeover switches (hereinafter referred to as 43 switches in this specification) for switching control rights of devices for each level. The right to control a device in the HMI means the control right from the HMI to the device.

The right to control equipment from the HMI changes depending on the operational status of the substation, such as maintenance for each line. 43 switches are installed in the HMI to realize this change of control authority. In other words, the switch 43 that switches the right to control the device is a switch that switches between a local state in which the HMI side is given the right to control the device, and a remote state in which the HMI side is not given the right to control the device. There are two types of 43 switches: software switches that can be turned on and off from the HMI, and physical switches that cannot be turned on and off from the HMI.

In such a SAS, each time an operator performs a control operation on equipment in a substation from an HMI, it is necessary to determine whether or not the right to control the equipment is established with respect to the control operation on the HMI. Therefore, a determination logic is employed to determine whether the right to control the device is successful or not. The determination logic combines switch state information indicating the remote state or local state of the 43 switches and operator operating source information set for each operator. The operating source information of the operator is local operator information indicating that the operator is a local operator, and remote operator information indicating that the operator is a remote operator. In other words, the judgment logic acquires the switch status information of the 43 switches and the operator's operating source information, and uses logical operators (AND, OR, NOT, XOR, etc.) to determine the right to control the equipment from the HMI. Outputs whether it is true or not.

If the right to control the equipment from the HMI is not established, it means that the operator is not permitted to control the equipment from the HMI. In this case, the operator's control operation is erroneous, the operation is treated as a failure, and the operation ends. Note that since the two-behavior control method is standard in the control operation of general equipment in a 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 failure of control rights, the operator cancels the selected device and the operation fails and the operation ends.

If the operation ends in 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 or she does not have control rights. According to the above-mentioned SAS, it is possible to prevent erroneous operation of equipment by an operator who does not have the right to control the equipment, or erroneous operation of equipment by an HMI that does not have the right to control the equipment, thereby improving safety in SAS operation. This makes it possible to ensure the quality of the product.

Japanese Patent Application Publication No. 2008-123118

In a SAS with multiple hierarchical levels, the number of 43 switches provided for each level is considerable. Therefore, in the conventional SAS, when an operator selects a device from the HMI, it is difficult for the operator to accurately grasp the success or failure of control of the device. Therefore, even though the operator does not have the right to control the equipment from the HMI, the operator performs a control operation on the equipment from the HMI, and it is determined that the control right is not established, resulting in the control operation ending in failure.

When a control operation fails, it is necessary to check the status of the control right of the device on the operation terminal each time. Further, in the conventional SAS, the cause of failure of control right is not presented. Therefore, the cause of the operation failure must be investigated using a human system. As a result, if the control operation fails, a large amount of work time is required, increasing the work burden on the operator.

In the embodiment of the present invention, by identifying and displaying the success or failure of the right to control the equipment on the operating terminal, it is possible to easily check the status of the right to control the equipment on the operating terminal, and this reduces the workload of the operator. The purpose is to provide a substation monitoring and control system that can reduce the

In order to solve the above problems, a substation monitoring and control system according to an embodiment of the present invention is provided with an operation terminal that monitors and controls equipment in the substation, a changeover switch is installed on the operation terminal, and In a substation monitoring and control system, a changeover switch is configured to switch between a local state in which a control right, which is an authority to operate the equipment, is given to the operating terminal and a remote state in which the control right is not given to the operating terminal, a storage unit that stores switch status information indicating that the changeover switch is in a local state or a remote state and operator operation source information acquired from the outside; and the operation of the equipment based on the information stored in the storage unit. a control right determination unit that determines whether a control right from the operation terminal is established; and the device, the control right from the operation terminal by the operator is established based on a determination result of the control right determination unit. an equipment symbol identification display section that identifies and displays, on an interface screen of a single-line diagram of an electric power system, a symbol of the equipment and a symbol of the equipment for which control authority from the operating terminal by the operator is not established. , 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, so that an operator can control the power system. The information display unit includes an information display unit that displays information stored in the storage unit when an interface cursor is brought close to the symbol of the device displayed on the interface screen of the single-cell diagram.

Block diagram showing an overview of the first embodiment Block diagram of HMI of the first embodiment A diagram showing a display example of the interface screen of a single line diagram in the first embodiment Block diagram of HMI of second embodiment A diagram illustrating a display example of a single-line diagram interface screen in the second embodiment Block diagram of HMI of third embodiment A diagram showing a display example of a device control interface screen in the third embodiment Block diagram showing an overview of the third embodiment Block diagram of HMI of the fourth embodiment Diagram showing a flowchart of the fourth embodiment A diagram showing a display example of an interface screen of a switching control sequence of 43 switches in the fourth embodiment. A diagram showing a display example of an interface screen of a switching control sequence of 43 switches in the fourth embodiment.

(First embodiment)
(composition)
A first embodiment will be described using FIGS. 1 to 3. FIG. 1 is a block diagram showing an overview of the first embodiment, FIG. 2 is a block diagram of an HMI in the first embodiment, and FIG. 3 is a display example of a single-cell diagram interface screen in the first embodiment. It is a diagram.

Reference numeral 1 shown in FIG. 1 is an HMI that controls equipment in a substation using SAS. A substation that is subject to SAS monitoring and control has a station level and a process level. A 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. Each of these lines is provided with a bay control device 3, and a local control panel 4 is connected to the bay control device 3.

43 switches 2 are provided at each of the station level and the process level to switch the control right of the equipment. The 43 switch 2 is connected to a terminal that receives the state of the lower 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 plays the role of a logical operator. If the logical operator is AND, the HMI 1 has the control right when all the lower bay control devices 3 are in the remote state R. Furthermore, when all lines are in the local state L, all control rights belong to the bay control device 3 side of each line. When remote state R and local state L coexist, control rights differ for each line.

The 43 switches 2 at the process level are connected to terminals that receive the status of the 43 switches 2 of each device below the process level. This terminal also plays the role of a logical operator. If the logical operator is AND, the local control panel 4 has control authority when all the devices below are in the remote state R. Furthermore, when all devices are in the local state L, all control rights are held on the local side of each device. When remote state R and local state L coexist, control authority differs for each device.

A switch and a local panel 5a for controlling the switch and a local panel 5b for controlling the circuit breaker and the circuit breaker are connected to the 43 switches 2 at the process level for each line. Note that components such as the local control panel 4 and local panels 5a and 5b are shown in lines A1 and A2, and are not shown in line A Trans, but line A Trans also has the same configuration as line A1 and line A2. It has elements. 43 switches 2 are also installed in the bay control device 3 and local panels 5a and 5b.

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

The control right determination unit 13 uses logical operators (AND, OR, NOT, A determination result is output as to whether the right to control the equipment from the HMI 1 is established or not established by the operator. Further, when the control right determination unit 13 receives the switch state information from the change detection unit 12, it outputs a determination result that the control right of the device is established or not established based on the switch state information and the operator's operating source information. The timing at which the control right determination unit 13 determines whether the control right has been granted may be when the change detection unit 12 detects a change in the local state or remote state of the switch 43, or when the switch state of the switch 43 is detected in the storage unit 11. It may also be when the memory of information is updated.

If the output of the control right determination unit 13 indicates that the right to control the equipment has been established, it means that the operator who operated the equipment is permitted to control the equipment from the HMI 1, and the operator cannot control the equipment from the HMI 1. It becomes possible to control the equipment. On the other hand, if the output of the control right determination unit 13 indicates that the control right is not established, it means that the HMI 1 or the operator himself is not permitted to control the equipment. In this case, the control operation from the HMI 1 by the operator becomes an erroneous operation.

The equipment symbol identification and display unit 14 identifies the symbol of the equipment for which the control right from the HMI 1 is established by the operated operator and the symbol for the equipment for which the control right from the HMI 1 is established by the operated operator, based on the determination result of the control right determination unit 13. The symbols of the devices that are not installed are identified and displayed on the interface screen 15 (shown in FIG. 3; hereinafter also simply referred to as the single-line diagram screen 15) of the single-line diagram of the electric power system.

The screen on which the symbol of the device is identified and displayed by the device symbol identification display section 14 is a screen for displaying the control right of the device, so the mode in which this screen is displayed is called the control right display mode. The lower part of FIG. 3 shows the control right display mode. In the control right display mode, the device symbol identification display section 14 displays the lines of the frame surrounding the rectangular device symbol (that is, each side of the rectangle) in a different color. Specifically, the device symbol identification display section 14 displays the lines in the frame of the symbol of the device for which the control right is established in black, and displays the line in the frame of the symbol of the device for which the control right is not established in gray. .

In the single 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 normal display mode, only the status of equipment within the substation is displayed. When the single-line diagram screen 15 takes the normal display mode, the equipment symbol identification display section 14 identifies and displays the status of the equipment in the substation on the single-line diagram screen 15. In the normal display mode shown in the upper part of FIG. 3, the device symbol identification display unit 14 distinguishes and displays a rectangular device symbol in white or gray based on the open/closed state of the device.

The equipment symbol identification display section 14 can switch between a control right display mode and a normal display mode on the single diagram screen 15. Further, as shown in FIG. 3, the single-line diagram screen 15 is set to display a mode display button 16. When the operator touches the mode display button 16, the equipment symbol identification display unit 14 switches from the normal display mode (upper side in FIG. 3) to the control privilege display mode (lower side in FIG. 3).

(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. Among these, the line connected to the 110 kV bus is operated from the HMI 1 of the SAS. In this case, the station level 43 switch 2 is in the local state L, and the SAS HMI 1 has control over the device.

The line connected to the 220kV busbar is remotely operated from a higher-level control center. In this case, the 43 switch 2 at the station level is in the remote state R, and the upper control center has control of the equipment. If the line A1 is undergoing repair work, the process level switch 43 is in the local state L, and the local control panel 4 has control over the equipment included in the line A1. In this case, with respect to the equipment included in the line A1, not only the upper control center but also the HMI 1 is not allowed to operate the equipment.

In the above-described SAS, when an operator touches the mode display button 16 on the single diagram screen 15, the normal display mode is switched to the control privilege display mode. That is, the single-line diagram screen 15 switches from the upper display in FIG. 3 to the lower display. The equipment symbol identification display unit 14 displays, on the single-line diagram screen 15, a symbol of the equipment for which the control right from the HMI 1 is established, and a symbol for the equipment for which the control right from the HMI 1 is established by the operator who operated it, in addition to the identification display of the equipment status. Identify and display symbols for equipment that does not Specifically, the symbol of the device is displayed in white or filled in gray to indicate the open/closed state of the device, and at the same time, the symbol of the device for which control rights are established is displayed with a black frame line, indicating that control rights are not established. The symbol of the equipment shown in the figure is displayed with gray lines.

(effect)
As mentioned above, the success or failure of the HMI 1 to take control of the equipment is determined based on the switch state information of the 43 switch 2 and the operator's operation source information, but in SAS with multiple hierarchical levels, the 43 switch Even if the switch statuses of all 43 switches 2 were clearly displayed, the operator would be unable to determine whether or not the HMI 1 has gained control of the equipment just by looking at the switch statuses of 43 switches 2. It is difficult to understand.

Therefore, in the first embodiment, the switch state information of the 43 switch 2 and the operator's operation source information are stored in the storage unit 11, and the control right determination unit 13 determines whether the HMI 1 Based on the determination result, the equipment symbol identification display unit 14 displays the symbol of the equipment for which the control right is established on the single-line diagram screen 15 in the control right display mode. Symbols of devices for which control rights are not established are identified and displayed. Therefore, the operator can accurately identify the devices for which the operator has control authority from HMI 1 and the devices for which the operator does not have control authority from HMI 1, just by looking at the single-line diagram screen 15. It is possible to grasp the

Moreover, in the first embodiment, when the local state or remote state of the 43 switch 2 is changed, the change detection unit 12 detects the change in the local state or remote state of the 43 switch 2, and the storage unit 11 detects the change. The switch state information of the switch 43 is updated by reflecting the detection result from the section 12. Therefore, the control right determination unit 13 can determine whether the operator has gained control of the equipment from the HMI 1 based on the switch state information of the 43 switches 2 detected by the change detection unit 12.

Therefore, in the first embodiment, it is possible to grasp in real time whether or not the control right from the HMI 1 has been granted. As a result, even if the operator forgets to return switch 43 after the line repair work is completed, the operator can connect devices to which HMI 1 has control rights and devices to which HMI 1 does not have control rights. It is possible to check accurately through the screen 15.

According to the first embodiment, when the right to control the equipment from the HMI 1 is not established, the operator does not have to worry about erroneously determining that the right to control the equipment has been established, and the operator can control the equipment by the HMI 1. It is possible to avoid erroneous control operations. As a result, it is no longer necessary to check the status of the control right of the device every time a control operation fails. Thereby, the operator can smoothly control the equipment using the HMI 1, and the work load can be significantly reduced.

(Second embodiment)
(composition)
A second embodiment will be described using FIGS. 4 and 5. FIG. 4 is a block diagram of an HMI according to the second embodiment, and FIG. 5 is a diagram showing a display example of an interface screen for a single line diagram in the second embodiment. The basic constituent elements of the second embodiment are the same as those of the first embodiment, and the same reference numerals are given to the same constituent elements as those of the first embodiment, and the explanation 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 operating source information of the operator, the account information of the user who switched the 43 switch 2 and the information at the time of switching the 43 switch 2 are stored. The time information is 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 section 17 in addition to the above-mentioned components. When the operator brings the interface cursor close to a certain distance to the equipment symbol displayed on the single-line diagram screen 15, the information display unit 17 displays the information stored in the storage unit 11 in a pop-up dialog box 18 (shown in FIG. 5). Display the information that was created. FIG. 5 shows a display example of the pop-up dialog box 18.

As shown in FIG. 5, the pop-up dialog box 18 includes the "line and equipment name" that includes the equipment to which the operator brings the interface cursor, "the side that currently has control rights", and "the side that has changed to the current control rights". "Time and Administrator" are displayed. “The time and administrator who changed the control right to the current one” are derived from the control right related information stored in the storage unit 11. In other words, the "time of change to current control right" is derived from the time information at the time of switching of 43 switch 2, and the "administrator who changed to current control right" is derived from the account information of the user who performed the switch of 43 switch 2. It will be destroyed.

When the operator moves the interface cursor away from the equipment symbol on the single-line diagram screen 15 by a certain distance or more, the information display section 17 ends the display of the pop-up dialog box 18. The information display section 17 makes the display of the pop-up dialog box 18 valid only in the control right display mode, and disables 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 will not be displayed even if the operator moves the interface cursor close to the symbol of the equipment on the single-line diagram screen 15.

(action and effect)
In the second embodiment having the above configuration, the storage unit 11 stores 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; It is stored as the switch status information of No. 2 and the operator's operation source information. Then, when the operator operates the mode display button 16 to set the single-crystal drawing screen 15 to the control right display mode and then brings the interface cursor close to the symbol of the equipment, the information display section 17 displays the information in the pop-up dialog box 18. It is possible to display the "name of the line and device" that includes the device to which the cursor is placed, "the party that currently has control rights", and "the time and administrator who changed the current control rights".

Therefore, for the device to which the interface cursor is brought near, the operator can efficiently check the line that the device is included in, the name of the device, the side that currently has the control right, the time when the current control right was changed, and the administrator through the single-line diagram screen 15. You can get to know it well. Therefore, the operator can clearly grasp the status of the control rights of the devices that can be controlled from the HMI 6.

For example, by looking at the display of ``the time and administrator who changed to the current control right'', the operator can know when switch 43 switch 2 was changed even if the control right of the equipment from HMI 6 has not been established. , and by whom it was performed. Therefore, even if the right to control the equipment from HMI 6 is not established, the operator can calmly estimate the cause and take appropriate measures to establish control right. . According to the second embodiment, the workload of the operator can be further reduced.

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 risk that the display of the equipment status will be hidden by the pop-up dialog box 18 on the single-line diagram screen 15 in the normal display mode. There is no. Therefore, in the second embodiment, good operational visibility can be maintained.

(Third embodiment)
(composition)
The third embodiment will be described using FIGS. 6 to 8. FIG. 6 is a block diagram of an HMI according to the third embodiment, and FIG. 7 is a diagram showing a display example of a device control interface screen in the third embodiment. FIG. 8 is a block diagram showing an overview of the third embodiment. The basic constituent elements of the third embodiment are the same as those of the first embodiment, and the same reference numerals are given to the same constituent elements as those of the first embodiment, and the explanation thereof will be omitted.

As shown in FIG. 6, the HMI 7 according to the third embodiment includes, in addition to the above-mentioned components, a switch identification section 19, a switch information display section 20, a list display section 21, a warning section 22, is provided. When the control authority determination unit 13 determines that the control authority in the HMI 7 is not established, the switch identification unit 19 identifies the 43 switch 2 that caused the determination as a switching target switch. The switch information display unit 20 displays information regarding the 43 switches identified by the switch identifying 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 bay control device 3 in line A Trans are shown as the 43 switches to be switched, and it is shown that they are to be 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" as "43 switches to be switched" on the device control interface screen 23. do. The device control interface screen 23 in FIG. 7 displays that the local control panel 4 "currently has control authority" in the line A Trans. In the third embodiment, the state in which the local control panel 4 has control authority is as shown in FIG.

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

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

In addition, 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 sends a warning message 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 right to control the equipment from the switch state HMI 7 is no longer established, and can quickly take steps toward establishing the right to control.

In addition, in the third embodiment, the switch identifying unit 19 identifies the 43 switch 2 that caused the determination that the right to control the device from the HMI 7 is not established as the 43 switch to be switched, and the switch information display unit 20 The 43 switches 2 to be switched are 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 authority from the HMI 7 from not being established to being established. Thereby, it is possible to efficiently perform the switching operation of the 43 switch 2 in order to establish the control authority for a device for which the control authority from the HMI 7 is not established.

(Fourth embodiment)
(composition)
The fourth embodiment will be described using FIGS. 9 to 12. FIG. 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 example of a display. The basic constituent elements of the fourth embodiment are the same as those of the third embodiment, and the same reference numerals are given to the same constituent elements as those of the third embodiment, and the explanation thereof will be omitted.

As shown in FIG. 9, the HMI 8 according to the fourth embodiment includes, in addition to the above-mentioned components, a changeover switch control section 24, a switch determination section 25, and a switching not possible message display section 26. . The changeover switch control unit 24 switches the switching target switch specified by the switch identification unit 19 from the remote state to the local state.

The switch determination unit 25 determines whether the switch to be changed is a switch that is permitted to be switched from the remote state to the local state by the changeover switch control unit 24. If the switch determination unit 25 determines that the switch to be changed is a switch for which switching from the remote state to the local state by the changeover switch control unit 24 is not permitted, the changeover not possible message display unit 26 indicates that the changeover target switch is a switch that is not permitted to be changed from the remote state to the local state by the changeover switch control unit 24 A warning message to the effect that this is not possible is displayed on the interface screen 27 of the 43 switch switching control sequence (see FIG. 11). Furthermore, in the fourth embodiment, when automatic switching is performed by the changeover switch control unit 24, confirmation is obtained from the operator (see FIG. 12). When the "execute" button is pressed on the screen shown in FIG. 12, switching is executed, and when the "cancel" button is pressed, the selection/control operation ends.

As mentioned above, the two-behavior control method is standard for general equipment control operations within substations. 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 the HMI 8 (S01), and an operation confirmation test is performed (S02). If the result of the operation confirmation test is a failure, the selection is canceled (S03).

If the result of the operation confirmation test is successful, the conditions for the control right are determined (S04). If the control right is established, a device selection command is issued to the IED (S05). If the control right is not established, the reason for determining that the control right is not established, that is, the cause of the failure in establishing the control right is indicated (S06). Subsequently, the switch specifying unit 19 specifies the switches to be switched, thereby indicating 43 switches 2 that need to be switched in order to be able to perform control (S07).

Next, it is checked whether the 43 switch 2 of the local control panel 4 or the 43 switch 2 below 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 switches 2 to be switched are the 43 switches 2 of the local control panel 4 or the 43 switches 2 below the hierarchy of the local control panel 4, these 43 switches 2 are switched to the changeover switch control section 24. It is a physical 43 switch 2 that cannot be switched by. Therefore, the switch determination unit 25 determines that the 43 switches 2 to be switched are switches that are not permitted to be switched from the remote state to the local state by the changeover switch control unit 24.

If the 43 switch 2 to be switched is such a switch, the switching impossible message display unit 26 displays a message on the interface screen 27 of the 43 switch switching control sequence to the effect that switching cannot be performed by the changeover switch control unit 24. do. The interface screen 27 of the switching control sequence for the 43 switches in FIG. 11 is a screen display for displaying a warning message to the operator when automatic switching cannot be performed by the changeover switch control unit 24.

As shown in FIG. 11, the switching not possible message display section 26 displays a <Caution> message saying, ``The local control panel or the 43 switches under the local control panel hierarchy are not compatible with the system's automatic switching control. will be terminated as a failure." is displayed. The "OK" button on this screen is a button for receiving approval for the warning message from the operator.

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

After getting confirmation from the operator using 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 target switch from the local state to the remote state. Then, each of the 43 switches 2 is switched (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 from the control right determination unit 13 is established or the condition that an operation cancellation command is received from the operator by touching the "cancel" button is satisfied, The operation is suspended in the selected state. Further, if either of the above two conditions is not satisfied by the predetermined timeout time, the operation is terminated.

(action and effect)
In the fourth embodiment as described above, since the changeover switch control unit 24 can switch the switching target switch specified by the switch identification unit 19 from the local state to the remote state, The determination changes from failure to establishment, and the operator can control the equipment from the HMI 8. Therefore, the operator can easily change the 43 switches, reducing the burden on the operator.

Further, in the fourth embodiment, even when the switch identification unit 19 identifies a switch to be changed, instead of immediately performing the switching operation of the 43 switches, the switch determination unit 25 first determines whether the switch to be changed is determined by the changeover switch control unit. 24 is permitted to switch from the local state to the remote state. If the switch determination unit 25 determines that the switch to be changed 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 not possible message display unit 26 displays the changeover switch control A message indicating that switching cannot be performed by the section 24 is displayed on the interface screen 27 of the switching control sequence of the 43 switches. Therefore, there is no fear that the operator will erroneously control the equipment using the HMI 8 while the changeover target switch has not been switched from the local state to the remote state by the changeover switch control unit 24. Thereby, it is possible to reliably avoid erroneous control operations of the equipment by the HMI 8, and it is possible to reduce the workload of the operator.

(Other embodiments)
Although several embodiments of the invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, substitutions, and changes can be made without departing from the gist of the invention. These embodiments and their modifications are included within the scope and gist of the invention as well as within the scope of the invention described in the claims and its equivalents.

For example, in the first embodiment, the equipment symbol identification display unit 14 identifies the symbol of the equipment for which the control right from the HMI 1 is established and the symbol for the equipment for which the control right from the HMI 1 by the operator who operated it is not established. Although the symbol is identified by the color of the line in the frame surrounding it, it is not limited to the color of the line. In other words, it is possible to select any display that can be distinguished between the symbol of the equipment for which the control right from HMI 1 is established and the symbol for the equipment for which the control right from HMI 1 is not established by the operator who operated it, for example. The shape, pattern, etc. of the symbol may be changed between a symbol for a device for which control rights are established and a symbol for a device for which control rights are not established.

Further, in the second embodiment, the information display section 17 may display the switch state information detected by the change detection section 12, that is, the change in the switch state information. Further, the information display unit 17 may display a change in the determination result when the control right determination unit 13 outputs a determination result different from the conventional determination result. In an embodiment having such an information display section 17, when an operator brings the interface cursor close to a symbol of a device displayed on the single-line diagram screen 15, the switch state information of the switch 43 is changed and the control right determination section is displayed. Changes in the determination results of No. 13 can be displayed. Thereby, the operator can perform control operations more efficiently, and the workload can be reduced.

1, 6, 7, 8 HMI
2 43 switch 3 Bay control device 4 Local control panels 5a, 5b Local panel 11 Storage section 12 Change detection section 13 Control authority determination section 14 Equipment symbol display section 15 Single-crystal diagram interface screen 16 Mode display button 17 Information display section 18 Pop-up Dialog box 19 Switch identification section 20 Switch information display section 21 List display section 22 Warning section 23 Device control interface screen 24 Changeover switch control section 25 Switch judgment section 26 Switching not possible message display section 27, 28 Interface screen for switching control sequence of 43 switches

Claims (6)

An operating terminal for monitoring and controlling equipment in the substation is provided, a changeover switch is installed on the operating terminal, and the changeover switch is in a local state that gives the operating terminal control authority that is the authority to operate the equipment. and a remote state in which the control right is not given to the operating terminal,
a storage unit that stores switch state information indicating that the changeover switch is in a local state or a remote state and operator operating source information acquired from the outside;
a control right determination unit that determines whether or not the control right from the operating terminal to the device is established based on information stored in the storage unit;
A symbol of the equipment for which the operator has the right to control from the operating terminal based on the determination result of the control right determining unit, and a symbol for the equipment for which the operator does not have the right to control from the operating terminal. an equipment symbol identification display unit that identifies and displays the information on an interface screen of a single-line diagram of the electric power system;
Equipped with
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,
A substation monitoring and control system comprising an information display unit that displays information stored in the storage unit when an operator approaches a symbol of the equipment displayed on an interface screen of a single-line diagram of a power system. . comprising a change detection unit that detects a change in the state of the changeover switch when the local state or remote state of the changeover switch is changed;
The storage unit updates switch state 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 determines whether the control right is granted based on the detection result of the change detection unit. a switch identifying unit that identifies the changeover switch that caused the determination as a switching target switch when the control right determination unit determines that the control right is not established in the operation terminal;
3. The substation monitoring and control system according to claim 1, further comprising a switch information display unit that displays information regarding the switching target switch on an interface screen for equipment control. The substation monitoring and control system according to claim 3 , further comprising a switching control unit that switches the switching target switch specified by the switch identification unit from a remote state to a local state. a switch determination unit that determines whether the switching target switch is a switch that is permitted to be switched from a remote state to a local state by the switching control unit;
If the switch determining unit determines that the switching target switch is a switch that is not permitted to be switched from a remote state to a local state by the switching control unit, a message indicating that switching cannot be performed by the switching control unit is displayed. The substation monitoring and control system according to claim 4 , further comprising a message display unit. A substation monitoring and control system that sets a plurality of levels so as to have a hierarchical structure and monitors and controls the equipment on a level-by-level basis, the substation monitoring and control system including a list for each level indicating whether the changeover switch is in a local state or a remote state. The substation monitoring and control system according to any one of claims 1 to 5 , further comprising a list display unit that displays the substation in a formatted manner.

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