HMI device, substation monitoring and control system, substation monitoring and control method, and program

Abstract

The present invention provides an HMI device enabling control of substation equipment from a substation monitoring and control system even if a control circuit changeover switch at a station level cannot be operated while the system remains in a remote mode where control is held by an upper-level control station. The HMI device is provided with: a storage unit that stores information indicating the state of a station-level control circuit changeover switch provided on a communication path connecting a device installed in an upper-level control station and the station level of a substation monitoring and control system; and a changeover unit that changes the state of the station-level control circuit changeover switch on the basis of an operation on an operation means displayed on an interface screen.

Description

HMI device, substation monitoring and control system, substation monitoring and control method, and program

[0001] The present invention relates to an HMI device, a substation monitoring and control system, a substation monitoring and control method, and a program.

[0002] Generally, a substation monitoring and control system is equipped with a control circuit changeover switch that switches between a remote control state in which equipment such as circuit breakers and switches within the substation are controlled from a higher-level control center, and a local control state in which equipment is controlled from within the substation.

[0003] Patent Document 1 discloses a substation monitoring and control system equipped with an HMI (Human Machine Interface) that controls and operates the equipment in the substation. This HMI has 43 switches that switch the control authority of each equipment, and based on the state of the 43 switches, displays symbols of equipment that have control authority and those that do not on a single-line diagram of the power system.

[0004] Japanese Patent Application Publication No. 2022-044510

[0005] However, in a substation monitoring and control system in which a remote monitoring and control device installed on a communication path connecting a device installed in a higher-level control station and the station level of a substation is equipped with a station-level control circuit changeover switch, if the station-level control circuit changeover switch becomes unable to switch to a remote state in which the higher-level control station has control due to some factor (for example, an abnormality in the remote monitoring and control device), there is a problem in that it may become impossible to control the equipment in the substation from the substation monitoring and control system.

[0006] The present disclosure has been made in consideration of the above circumstances, and provides an HMI device, a substation monitoring and control system, a substation monitoring and control method, and a program that can control substation equipment from the substation monitoring and control system even if the station-level control circuit changeover switch remains in a remote state where control authority is held by a higher-level control station and cannot be switched.

[0007] This disclosure has been made to solve the above-mentioned problems, and one aspect of the present disclosure is an HMI (Human Machine Interface) device in a substation monitoring and control system, which includes: a memory unit that stores information indicating the state of a station-level control circuit changeover switch that is provided on a communication path connecting a device installed in a higher-level control station and the station level of the substation monitoring and control system; and a changeover unit that changes the state of the station-level control circuit changeover switch based on an operation on an operating means displayed on an interface screen.

[0008] Another aspect of the present disclosure is the above-mentioned HMI device, wherein the memory unit stores the actual state of the station-level control circuit changeover switch and the control right management state of the station-level control circuit changeover switch as the state of the station-level control circuit changeover switch, and the changeover unit changes the control right management state of the station-level control circuit changeover switch stored in the memory unit based on the operation to a state in which equipment in the substation can be controlled from the substation monitoring and control system.

[0009] Another aspect of the present disclosure is the above-mentioned HMI device, which includes a warning display unit that displays a warning regarding the state of the station-level control circuit changeover switch on the interface screen based on the operation before the switching unit changes the state of the station-level control circuit changeover switch.

[0010] Another aspect of the present disclosure is the above-mentioned HMI device, which includes a user verification unit that, before the switching unit changes the state of the station-level control circuit changeover switch, checks the user authentication information entered by the user against pre-stored authentication information based on the operation.

[0011] Another aspect of the present disclosure is a substation monitoring and control system including: a memory unit that stores information indicating the state of a station-level control circuit changeover switch that is provided on a communication path connecting a device installed in a higher-level control station and the station level of the substation monitoring and control system; and a changeover unit that changes the state of the station-level control circuit changeover switch based on an operation on an operating means displayed on an interface screen.

[0012] Another aspect of the present disclosure is the substation monitoring and control system described above, wherein the memory unit stores the actual state of the station-level control circuit changeover switch and the control right management state of the station-level control circuit changeover switch as the state of the station-level control circuit changeover switch, and the changeover unit changes the control right management state of the station-level control circuit changeover switch stored in the memory unit based on the operation to a state in which equipment in the substation can be controlled from the substation monitoring and control system.

[0013] Another aspect of the present disclosure is the above-mentioned substation monitoring and control system, which includes a warning display unit that displays a warning regarding the state of the station-level control circuit changeover switch on the interface screen based on the operation before the switching unit changes the state of the station-level control circuit changeover switch.

[0014] Another aspect of the present disclosure is the above-mentioned substation monitoring and control system, which includes a user verification unit that compares input user authentication information with pre-stored authentication information based on the operation before the switching unit changes the state of the station-level control circuit changeover switch.

[0015] Another aspect of the present disclosure is the substation monitoring and control system described above, further including a remote monitoring and control device, a bay control device, a local control panel, and a local panel.

[0016] Another aspect of the present disclosure is a substation monitoring and control method, which includes the steps of: storing information indicating the state of a station-level control circuit changeover switch provided on a communication path connecting a device installed in a higher-level control station and a station level of a substation monitoring and control system; and changing the state of the station-level control circuit changeover switch based on an operation on an operating means displayed on an interface screen.

[0017] Another aspect of the present disclosure is a program for causing a computer to function as an HMI (Human Machine Interface) device in a substation monitoring and control system, the HMI device comprising: a memory unit that stores information indicating the state of a station-level control circuit changeover switch provided on a communication path connecting a device installed in a higher-level control station and a station level of the substation monitoring and control system; and a switching unit that changes the state of the station-level control circuit changeover switch based on an operation on an operating means displayed on an interface screen.

[0018] According to this disclosure, the HMI device, substation monitoring and control system, control method, and program enable the substation equipment to be controlled from the substation monitoring and control system even if the station-level control circuit changeover switch cannot be switched, while remaining in a remote state where the upper control station has control authority.

[0019] FIG. 1 is a schematic block diagram showing the configuration of a substation monitoring and control system 100 according to a first embodiment of the present disclosure. FIG. 2 is a schematic block diagram showing the configuration of an HMI 22 in the same embodiment. FIG. 3 is a schematic diagram showing an example of an interface screen of the HMI 22 in the same embodiment. FIG. 4 is a table showing example contents stored in a storage unit 201 in the same embodiment. FIG. 5 is a flowchart explaining the operation of the HMI 22 in the same embodiment. FIG. 6 is a schematic block diagram showing the configuration of an HMI 22a according to a second embodiment of the present disclosure. FIG. 7 is a flowchart explaining the operation of the HMI 22a in the same embodiment. FIG. 8 is an explanatory diagram explaining the hardware configuration of each device according to each embodiment.

[0020] <First Embodiment> A first embodiment of the present disclosure will be described below with reference to the drawings. FIG. 1 is a schematic block diagram showing the configuration of a substation monitoring and control system 100 according to a first embodiment of the present disclosure. The substation monitoring and control system 100 controls devices within the substation, such as a switch 61 and a circuit breaker 71 of a line A1, a switch 62 and a circuit breaker 72 of a line A2, and a line A transformer 41. The substation monitoring and control system 100 is communicably connected to devices installed in upper control centers 11 and 12 via a network N1. The devices installed in the upper control centers 11 and 12 monitor and control one or more substations. Note that the number of upper control centers, lines, switches, and circuit breakers in FIG. 1 is merely an example and may differ from that in FIG. 1 .

[0021] The substation monitoring and control system 100 includes a TC (Tele-Control, remote monitoring and control device) 21, an HMI (Human Machine Interface, HMI device) 22, IEDs (Intelligent Electric Devices) 31 and 32, MUs (Merging Units) 51 and 52, a station bus B1, and a process bus B2. Although only one process bus B2 is shown in FIG. 1 , multiple process buses B2 may be provided, for example, for each line. The substation monitoring and control system 100 may also include a local control panel (not shown).

[0022] The substation monitoring and control system 100 is hierarchically structured at least into a station level and a process level. The hierarchy of the substation monitoring and control system 100 increases as you go up in Figure 1, with the station level being the highest level in the substation monitoring and control system 100 and each device being the lowest level. The TC 21, HMI 22, IED 31, IED 32, and line A Trans 41 are communicatively connected to a station bus B1, which is a station-level LAN (Local Area Network). The IEDs 31 and 32, and MUs 51 and 52 are communicatively connected to a process bus B2, which is a process-level LAN.

[0023] The TC 21 is provided on a communication path connecting the upper control centers 11 and 12 and the station level of the substation monitoring and control system 100, and includes a station-level 43 switch (control circuit changeover switch) 21T. The 43 switch 21T may be a control circuit changeover switch with control device number 43 (Japan Electrical Manufacturers' Association standard JEM1090) or a LocSta (Lock State) switch of IEC 61850. The TC 21 may be implemented by one or more computers loading and executing a program. The 43 switch 21T can be switched to one of three states: a first upper state R1, a second upper state R2, or a local state HMI, and includes an operation interface (e.g., a three-contact rotary switch) for switching to one of the three states. The first upper state R1 is a state in which the upper control center 11 is given control authority for the hierarchy below the TC 21. The second higher-level state R2 is a state in which control authority for the hierarchy lower than the TC 21 is given to the higher-level control center 12. The local state HMI is a state in which control authority for the hierarchy lower than the TC 21 is given to the substation monitoring and control system 100 (HMI 22).

[0024] The HMI 22 is a device that has at least an input interface such as a mouse, keyboard, or touch panel, and an interface screen such as a liquid crystal display or organic EL display, and is used to operate, control, and monitor substation equipment from within the substation. The HMI 22 may be realized by one or more computers reading and executing programs.

[0025] The IED 31 is a bay control device for the line A1, and includes a 43 switch 31A of the bay control device for the line A1. The IED 31 is also connected to a 43 switch 31L of a local control panel (not shown) for the line A1. The IED 32 is a bay control device for the line A2, and includes a 43 switch 32A of the bay control device for the line A2. The IED 32 is also connected to a 43 switch 32L of a local control panel for the line A2. Each of the IEDs 31 and 32 may be realized by one or more computers reading and executing a program.

[0026] The 43 switch 31A of the bay control device of line A1 can be switched to either of two states, local state L or remote state R, and is provided with an operation interface (e.g., a two-contact rotary switch) for switching to either of the two states. The local state L of the 43 switch 31A is a state in which control authority for a hierarchy lower than the bay control device of line A1 is given to the bay control device of line A1. The remote state R of the 43 switch 31A is a state in which control authority for a hierarchy lower than the bay control device of line A1 is given to a hierarchy higher than the bay control device of line A1 (e.g., HMI 22, upper control centers 11, 12).

[0027] The 43 switch 31L on the local control panel of line A1 can be switched to either of two states, local state L or remote state R, and is provided with an operation interface (e.g., a two-contact rotary switch) for switching to either of the two states. The local state L of the 43 switch 31L is a state in which control authority for a hierarchy lower than the local control panel of line A1 is given to the local control panel of line A2. The remote state R of the 43 switch 31A is a state in which control authority for a hierarchy lower than the local control panel of line A1 is given to a hierarchy higher than the local control panel of line A1 (e.g., the bay control device of line A1, the HMI 22, and the higher-level control centers 11 and 12).

[0028] The 43 switches 32A and 32L are different in that they are targeted at devices related to the line A2, but are otherwise similar to the 43 switches 31A and 31L.

[0029] The MU 51 (local panel) of the line A1 controls the equipment of the line A1, such as the switch 61 and the circuit breaker 71. The MU 51 is provided with switches 51S and 51C for the switch 61 and the circuit breaker 71, which are the equipment of the line A1. The local panels of the switch 61 and the circuit breaker 71 are also provided with operation interfaces for operating the switch 61 and the circuit breaker 71, for example, to open and close them.

[0030] The 43 switch 51S of the switch 61 can be switched to either of two states, a local state L or a remote state R, and is provided with an operation interface (for example, a two-contact rotary switch) for switching to either of the two states. The local state L of the 43 switch 51S is a state in which control of the switch 61 is given to the local panel of the switch 61. The remote state R of the 43 switch 51S is a state in which control of the switch 61 is given to a higher hierarchy than the local panel of the switch 61 (for example, the local control panel of line A1, the bay control device of line A1, the HMI 22, or higher-level control centers 11 and 12).

[0031] Similarly, the 43 switch 51C of the circuit breaker 71 can be switched to either of two states, a local state L or a remote state R, and is provided with an operation interface (for example, a two-contact rotary switch) for switching to either of the two states. The local state L of the 43 switch 51C is a state in which control of the circuit breaker 71 is given to the local panel of the circuit breaker 71. The remote state R of the 43 switch 51C is a state in which control of the circuit breaker 71 is given to a higher hierarchy than the local panel of the circuit breaker 71 (for example, the local control panel of line A1, the bay control device of line A1, the HMI 22, or higher-level control centers 11 and 12).

[0032] The MU 52 (local panel) of line A2 controls the equipment of line A2, such as the switch 62 and circuit breaker 72. The MU 52 is equipped with switches 52S and 52C for the switch 62 and circuit breaker 72, which are equipment of line A2. The local panels of the switch 62 and circuit breaker 72 are also equipped with operation interfaces for operating the switch 62 and circuit breaker 72, for example, to open and close them.

[0033] The 43 switch 52S of the switch 62 can be switched to either of two states, a local state L or a remote state R, and is provided with an operation interface (for example, a two-contact rotary switch) for switching to either of the two states. The local state L of the 43 switch 52S is a state in which control of the switch 62 is given to the local panel of the switch 62. The remote state R of the 43 switch 52S is a state in which control of the switch 62 is given to a higher hierarchy than the local panel of the switch 62 (for example, the local control panel of line A2, the bay control device of line A2, the HMI 22, or higher-level control centers 11 and 12).

[0034] Similarly, the 43 switch 52C of the circuit breaker 72 can be switched to either of two states, a local state L or a remote state R, and is provided with an operation interface (for example, a two-contact rotary switch) for switching to either of the two states. The local state L of the 43 switch 52C is a state in which control of the circuit breaker 72 is given to the local panel of the circuit breaker 72. The remote state R of the 43 switch 52C is a state in which control of the circuit breaker 72 is given to a higher hierarchy than the local panel of the circuit breaker 72 (for example, the local control panel of line A2, the bay control device of line A2, the HMI 22, or the higher-level control centers 11 and 12).

[0035] Normally, for the HMI 22 to control, for example, the switch 61, all of the 43 switches 31A, 31L, and 51S on the path to the switch 61, which are at a lower level than the HMI 22, must be in local state L, and the 43 switch 21T must also be in local state HMI. However, if an abnormality occurs in the TC 21, it may be impossible to control it from the upper control centers 11 and 12, and the state of the 43 switch 21T may not be changed from the first upper state R1 or the second upper state R2. In such a case, the HMI 22 of this embodiment displays an operating means (such as a button) for changing the state of the 43 switch 21T on the interface screen so that the HMI 22 can control each device in the substation.

[0036] 2 is a schematic block diagram showing the configuration of the HMI 22 according to this embodiment. The HMI 22 includes a storage unit 201, an information display unit 202, a 43 switch state determination unit 203, a S / W (Software) switch mode management unit 204, a warning dialog display unit 205 (warning display unit), a 43 switch state switching unit 206 (switching unit), a change detection unit 207, a control right determination unit 208, a list display unit 209, an equipment symbol identification display unit 210, an equipment selection command output unit 211, a warning unit 212, a switch identification unit 213, a switch information display unit 214, a changeover switch control unit 215, a switch determination unit 216, and a switching impossible message display unit 217.

[0037] The memory unit 201 stores information indicating the states of the 43 switches 21T, 31A, 31L, 32A, 32L, 51S, 51C, 52S, and 52C. The memory unit 201 stores information indicating the state of the 43 switch 21T, including information indicating the actual state of the 43 switch 21T and information indicating the control management state. The information display unit 202 displays the information stored in the memory unit 201 on an interface screen. The 43 switch state determination unit 203 starts processing, for example, when a device on a single line diagram displayed on the interface screen is selected, and determines the state of the 43 switch 21T at the station level. If the 43 switch 21T is in the local state HMI, processing proceeds to the control right determination unit 208. If the 43 switch 21T is not in the local state HMI (if it is in the first higher-level state R1 or the second higher-level state R2), processing proceeds to the software-type switch mode management unit 204. In addition, the condition for transferring processing from the 43 switch state determination unit 203 to the S / W type switch mode management unit 204 may be that the 43 switch 21T is not in the local state HMI, and also that an abnormality in the 43 switch 21T is detected.

[0038] The S / W type switch mode management unit 204 manages whether or not the S / W type switch mode is in effect. The S / W type switch mode is a mode in which the state of the 43 switch 21T in terms of control right management is set to a local state, separate from the actual state of the 43 switch 21T. Information indicating the state of the 43 switch 21T in terms of control right management is also stored in the storage unit 201. When the user presses the 43 switch at the station level on the interface screen, processing moves to a warning dialog display unit 205.

[0039] The warning dialog display unit 205 displays a warning dialog on the interface screen as a confirmation before switching the control right management state of the 43 switch 21T to the local state based on the pressing of the 43 switch at the station level on the interface screen. First, the warning dialog display unit 205 displays a dialog on the interface screen stating "Have you disconnected from the upper control center?" The user can press the OK button or the Cancel button in the dialog. When the OK button is pressed, the warning dialog display unit 205 displays a dialog on the interface screen stating "Have you contacted the on-site worker?" When the OK button in the dialog is pressed, processing moves to the 43 switch state switching unit 206. In either dialog, pressing the Cancel button results in deselection of the device.

[0040] The switch 43 state switching unit 206 changes the state of the switch 43 21T based on an operation on the operating means displayed on the interface screen. The change result is reflected in the storage unit 201. Since the switch 43 state switching unit 206 cannot change the actual state of the switch 43 21T, which is a physical switch, the switch 43 state switching unit 206 changes, for example, the control right management state of the switch 43 21T stored in the storage unit 201 to a local state (a software-type local state), i.e., a state in which the equipment in the substation can be controlled from the substation monitoring and control system 100, based on an operation on the operating means displayed on the interface screen. This change is made when processing is transferred from the warning dialog display unit 205. When the control right management state of the switch 43 21T is switched to the local state, the software-type switch mode management unit 204 transitions from the normal mode to the software-type switch mode, and processing is transferred to the control right determination unit 208.

[0041] The change detection unit 207 detects changes in the state of each of the 43 switches 21T, 31A, 31L, 32A, 32L, 51S, 51C, 52S, and 52C. The detection results by the change detection unit 207 may be reflected in the information stored in the memory unit 201. The control right determination unit 208 determines whether the control right from the HMI 22 has been established for each device based on the information stored in the memory unit 201. Even if the actual state of the 43 switch 21T is not the local state HMI, if the state of the 43 switch 21T in terms of control right management is the S / W-type local state, the control right determination unit 208 determines whether the control right has been established in the same way as when the 43 switch 21T is the local state HMI. The list display unit 209 displays a list of the states of the 43 switches related to the device specified by the user on the interface screen. The equipment symbol identification display unit 210 identifies the symbol of each equipment as a single connection diagram depending on whether or not the control right is established, and displays it on the interface screen.

[0042] The device selection command output unit 211 outputs a device selection command to an IED on a path to the selected device from among the IEDs 31 and 32. After the device selection command output unit 211 outputs the device selection command, the S / W type switch mode management unit 204 transitions from the S / W type switch mode (1) to the normal mode (0).

[0043] The warning unit 212 displays a warning message on the interface screen when the control right of the device designated by the user is not established. The switch identification unit 213 identifies the switch 43 that caused the determination when the control right of the device designated by the user is not established as the switch to be changed. The switch information display unit 214 displays information about the switch to be changed on the interface screen.

[0044] The changeover switch control unit 215 changes the state of the changeover target switch identified by the switch identification unit 213. The switch determination unit 216 determines whether the changeover target switch is a 43 switch whose state is permitted to be changed by the changeover switch control unit 215. The changeover impossible message display unit 217 displays a message when the changeover switch control unit 215 cannot change the state.

[0045] FIG. 3 is a schematic diagram illustrating an example of an interface screen of the HMI 22 in this embodiment. The interface screen G1 in FIG. 3 displays a single-line diagram (skeleton diagram of a substation) and includes a button BT1 (operation means, a software-based 43 switch) for controlling the state of the 43 switch 21T. In the single-line diagram, the symbols of each device may be displayed in a color or other way to indicate whether the HMI 22 has control over that device. The button BT1 may be displayed as always operable on the interface screen G1, or may be displayed as operable only when the 43 switch 21T is not in the local HMI state when the user selects the device, or may be displayed as operable only when an abnormality occurs in the 43 switch 21T or the TC 21. Displaying the button BT1 as operable may mean that the button BT1 is displayed differently when it is operable and when it is not operable, such as being grayed out when it is not operable, or the button BT1 may be included in a dialog box or the like that is displayed when the button BT1 becomes operable.

[0046] FIG. 4 is a table showing an example of the contents stored in the storage unit 201 in this embodiment. The storage unit 201 stores information indicating the state of each 43 switch as shown in FIG. 4. The "43 switch" column in FIG. 4 stores information identifying the 43 switch, and the "state" column stores information indicating the state of the 43 switch. In the "43 switch" column of row No. 1, "Station Level" is information identifying the 43 switch 21T, and "R1" in the "state" column is information indicating the first higher state R1. Note that when indicating the second higher state R2 and the local state HMI, the "state" column is, for example, "R2" and "HMI," respectively. This row No. 1 contains information indicating the actual state of the 43 switch 21T. The "Station Level (S / W)" in the "43 Switch" column of row 2 is information for identifying the 43 Switch 21T, and the "Status" column is information indicating the control management status, and the "S / W Local" in the "Status" column is information indicating the local status of the S / W format. Note that when indicating the normal mode, the "Status" column is, for example, "Normal."

[0047] "Bay A1" in the "Switch 43" column of row No. 3 is information for identifying switch 43 31A, and "Remote" in the "Status" column is information indicating the remote status R. In the case of a local status, the "Status" column is, for example, "Local." "Local A1" in the "Switch 43" column of row No. 4 is information for identifying switch 43 31L, and "Remote" in the "Status" column is information indicating the remote status R.

[0048] 5 is a flowchart illustrating the operation of the HMI 22 in this embodiment. First, the user selects a device to be controlled from the single-circuit diagram of the substation monitoring and control system 100 on the interface screen (step S01), and an operation confirmation test is performed (step S02). If the result of the operation confirmation test is unsuccessful (step S02—fail), the device selected in step S01 is deselected (step S03). If the result of the operation confirmation test is successful (step S02—pass), the 43 switch state determination unit 203 determines whether the station-level 43 switch 21T is in the local state HMI (step S11).

[0049] If it is determined that the HMI is in the local state (step S11—YES), the control right determination unit 208 determines whether the control right from the HMI 22 is established for the device selected in step S01 (step S04). If the control right is established (step S04—established), it issues a device selection command to the IED corresponding to the selected device (step S05). Next, the S / W type switch mode management unit 204 cancels the S / W type 43 switch mode and transitions to the normal mode.

[0050] On the other hand, if it is determined in step S11 that the HMI is not in the local state (step S11-NO), when the user presses the S / W type 43 switch (the station level 43 switch on the interface screen) to control the device selected in step S01 (step S12), the warning dialog display unit 205 asks the user in a dialog whether the connection with the upper control centers 11 and 12 has been disconnected (step S13). If the user presses the cancel button in step S13 (step S13-CANCEL), the device selected in step S01 is deselected (step S03).

[0051] If the user presses the OK button in step S13 (step S13-OK), the warning dialog display unit 205 further asks the user through a dialog whether or not they have already contacted the on-site worker (step S14).If the user presses the cancel button in step S14 (step S14-CANCEL), the device selected in step S01 is deselected (step S03).

[0052] In step S14, if the user presses the OK button (step S14-OK), the 43 switch state switching unit 206 switches the state of the 43 switch 21T in terms of control right management to the local state, and the S / W type switch mode management unit 204 transitions to the S / W type switch mode (step S15). After that, the process proceeds to step S04.

[0053] On the other hand, if the control right is not established in the determination of step S04 (step S04-not established), the warning unit 212 indicates the reason for the determination that the control right was not established, i.e., the cause of the failure to establish the control right (step S06). Subsequently, the switch identification unit 213 identifies the switch to be changed over, and indicates the 43 switches that need to be changed over to enable control execution (step S07).

[0054] Next, it is confirmed whether the 43 switch on the local control panel of the line corresponding to the selected device or a 43 switch below the local control panel hierarchy is in the local state (step S08). If the 43 switch is not in the local state (step S08-No), the 43 switch is in the remote state, and the selected device is deselected (step S03).

[0055] If the switch 43 is in the local state (Yes in S08), it is possible for the changeover switch control unit 215 to switch from the local state to the remote state. At this time, the switch information display unit 214 displays the switch 43 that switches the switch state from the local state to the remote state on the interface screen of the changeover control sequence of the switch 43, and asks the user for confirmation regarding the execution of the changeover of the switch 43 by the changeover control sequence (Step S09). If confirmation is not obtained from the user (No in Step S09), the selected device is deselected (Step S03).

[0056] After receiving confirmation from the user in step S09 (step S09-YES), when the user instructs execution, the changeover switch control unit 215 switches the switches to be changed over from the local state to the remote state and executes the changeover of each of the 43 switches (step S10), continues the operation of the selected device in the control stage, and the process proceeds to step S05.

[0057] As described above, the HMI 22 includes a storage unit 201 that stores information indicating the state of the 43 switch 21T provided on the communication path connecting the upper control centers 11, 12 and the station level of the substation monitoring and control system 100, and a 43 switch state switching unit 206 that changes the state of the 43 switch 21T based on an operation on an operation means displayed on the interface screen. As a result, even if the 43 switch 21T cannot be switched due to an abnormality in the TC 21 or the 43 switch 21T, the substation equipment can be controlled from the substation monitoring and control system 100 while the upper control centers 11, 12 remain in a remote state with control authority.

[0058] Second Embodiment A second embodiment of the present disclosure will be described below with reference to the drawings. A substation monitoring and control system 100 in the second embodiment has a configuration similar to that of the substation monitoring and control system 100 in Fig. 1, but includes an HMI 22a instead of the HMI 22. The HMI 22a checks the authentication information of the user before changing the state of the 43 switch 21T.

[0059] 6 is a schematic block diagram showing the configuration of an HMI 22a according to a second embodiment of the present disclosure. The HMI 22a has a configuration similar to the HMI 22 of FIG. 2, but differs from the HMI 22 in that it includes a user confirmation unit 218. The user confirmation unit 218 confirms user authentication information based on an operation on an operation means displayed on the interface screen before the 43 switch state switching unit 206 changes the state of the 43 switch 21T. The user authentication information may be any one of a password, biometric information such as a fingerprint, a hardware token such as an IC card, or a combination of these.

[0060] FIG. 7 is a flowchart illustrating the operation of the HMI 22a in this embodiment. The flowchart in FIG. 7 is similar to the flowchart in FIG. 5, except that step S17 is added between step S12 and step S13. Note that FIG. 7 illustrates an example in which the user authentication information is a password. In step S17, the user confirmation unit 218 prompts the user to enter a password (operator authentication information) via a dialog box. The user confirmation unit 218 compares the input password and other authentication information with pre-stored authentication information. If the user confirmation unit 218 determines that the password and other authentication information is incorrect (step S12—password incorrect), the device selected in step S01 is deselected (step S03). Furthermore, if the user confirmation unit 218 compares the input password and other authentication information with pre-stored authentication information and determines that the password and other authentication information is correct (step S12—password correct), the process proceeds to step S13. The comparison between the input authentication information and the pre-stored authentication information may be made by determining whether or not the authentication information matches, or by determining whether or not the calculation result including one piece of authentication information matches the other piece of authentication information, or by determining whether or not the calculation result including both pieces of authentication information is a specific value.

[0061] In this way, the substation monitoring and control system 100 is provided with a user verification unit 218 that verifies the user's authentication information based on the operation of the operation means displayed on the interface screen before the switch 42 state switching unit 206 changes the state of the switch 43 21T. This allows the substation equipment to be controlled from the substation monitoring and control system 100 even if the switch 43 21T cannot be switched while remaining in a remote state in which the upper control centers 11 and 12 have control authority due to an abnormality in the TC 21 or the switch 43 21T.

[0062] FIG. 8 is an explanatory diagram illustrating the hardware configuration of each device according to each embodiment. Each device is an HMI 22 or 22a. Each device includes an input / output module I, a storage module M, and a control module P. The input / output module I includes some or all of the following: a communication module H11, a connection module H12, a pointing device H21, a keyboard H22, a display H23, a button H3, a microphone H41, a speaker H42, a camera H51, or a sensor H52. The storage module M includes a drive H7. The storage module M may further include some or all of a memory H8. The control module P includes a memory H8 and a processor H9. These hardware components are connected to each other via a bus (Bus) for communication and receive power from a power supply H6.

[0063] The connection module H12 is a digital input / output port such as a USB (Universal Serial Bus). In the case of a portable device, the pointing device H21, keyboard H22, and display H23 are touch panels. The sensor H52 is an acceleration sensor, a gyro sensor, a GPS receiving module, a proximity sensor, or the like. The power supply H6 is a power supply unit that supplies the electricity necessary to operate each device. In the case of a portable device, the power supply H6 is a battery. The drive H7 is an auxiliary storage medium such as a hard disk drive or a solid-state drive. The drive H7 may be a non-volatile memory such as an EEPROM or a flash memory, or a magneto-optical disk drive or a flexible disk drive. Furthermore, the drive H7 is not limited to being built into each device, but may also be an external storage device connected to the connector of the connection module H12. The memory H8 is a main storage medium such as a random access memory. The memory H8 may also be a cache memory. The memory H8 stores instructions when the instructions are executed by one or more processors H9. The processor H9 is a CPU (Central Processing Unit). The processor H9 may be an MPU (Microprocessing Unit) or a GPU (Graphics Processing Unit). The processor H9 reads programs and various data from the drive H7 via the memory H8 and performs calculations to execute instructions stored in one or more memories H8.

[0064] The input / output module I is used for the HMIs 22 and 22a, etc. The control module P is used to implement each part of the HMIs 22 and 22a. Note that in this specification and the like, the term "HMIs 22 and 22a" may be replaced with the term "control module P."

[0065] The present disclosure may also be embodied as follows: (1) One embodiment of the present disclosure is an HMI (Human Machine Interface) device in a substation monitoring and control system, the HMI device including: a storage unit that stores information indicating a state of a control circuit changeover switch at a station level that is provided on a communication path connecting a device installed in a higher-level control station and a station level of the substation monitoring and control system; and a switching unit that changes the state of the control circuit changeover switch at the station level based on an operation on an operation means displayed on an interface screen.

[0066] This allows the HMI device to control the substation equipment from the substation monitoring and control system even if the station-level control circuit changeover switch becomes unable to be switched and remains in a remote state where control is given to the higher-level control station.

[0067] (2) Another embodiment of the present disclosure is the HMI device described in (1), wherein the memory unit stores the actual state of the station-level control circuit changeover switch and the control right management state of the station-level control circuit changeover switch as the state of the station-level control circuit changeover switch, and the changeover unit changes the control right management state of the station-level control circuit changeover switch stored in the memory unit based on the operation to a state in which equipment in the substation can be controlled from the substation monitoring and control system.

[0068] As a result, even if the control circuit changeover switch at the station level is a physical switch and cannot be operated from the HMI device, the control right can be given to the HMI device by operating it from the HMI device.

[0069] (3) Another embodiment of the present disclosure is an HMI device as described in (1) or (2), which includes a warning display unit that displays a warning regarding the state of the station-level control circuit changeover switch on the interface screen based on the operation before the switching unit changes the state of the station-level control circuit changeover switch.

[0070] This prevents the HMI device from accidentally giving control rights to itself due to a user's mistaken operation.

[0071] (4) Another embodiment of the present disclosure is an HMI device described in any one of (1) to (3), which includes a user verification unit that, before the switching unit changes the state of the station-level control circuit changeover switch, checks the input user authentication information against pre-stored authentication information based on the operation.

[0072] This allows the HMI device to limit users who can be given control rights to the HMI device by operating the HMI device to specific users.

[0073] (5) Another embodiment of the present disclosure is a substation monitoring and control system including: a memory unit that stores information indicating the state of a station-level control circuit changeover switch that is provided on a communication path connecting a device installed in a higher-level control station and a station level of the substation monitoring and control system; and a changeover unit that changes the state of the station-level control circuit changeover switch based on an operation on an operation means displayed on an interface screen.

[0074] This allows the substation monitoring and control system to control the substation equipment even if the station-level control circuit changeover switch becomes unable to be switched and remains in a remote state where control is given to the higher-level control station.

[0075] (6) Another embodiment of the present disclosure is the substation monitoring and control system described in (5), wherein the memory unit stores the actual state of the station-level control circuit changeover switch and the control right management state of the station-level control circuit changeover switch as the state of the station-level control circuit changeover switch, and the changeover unit changes the control right management state of the station-level control circuit changeover switch stored in the memory unit based on the operation to a state in which equipment in the substation can be controlled from the substation monitoring and control system.

[0076] As a result, even if the station-level control circuit changeover switch is a physical switch and cannot be operated from the interface screen of the substation monitoring and control system, control rights can be given to the substation monitoring and control system by operating it from the interface screen.

[0077] (7) Another embodiment of the present disclosure is a substation monitoring and control system according to (5) or (6), further comprising a warning display unit that displays a warning regarding the state of the station-level control circuit changeover switch on the interface screen based on the operation before the switching unit changes the state of the station-level control circuit changeover switch.

[0078] This makes it possible to prevent the substation monitoring and control system from giving control rights to itself due to an erroneous operation by the user.

[0079] (8) Another embodiment of the present disclosure is the substation monitoring and control system according to any one of (5) to (7), further comprising a user verification unit that, before the switching unit changes the state of the station-level control circuit changeover switch, verifies the input user authentication information against pre-stored authentication information based on the operation.

[0080] This allows the substation monitoring and control system to limit users who can be given control rights to the substation monitoring and control system through operations on the interface screen to specific users.

[0081] (9) Another embodiment of the present disclosure is a substation monitoring and control system according to any one of (5) to (8), further comprising a remote monitoring and control device, a bay control device, a local control panel, and a local panel.

[0082] (10) Another embodiment of the present disclosure is a substation monitoring and control method, which includes the steps of: storing information indicating the state of a station-level control circuit changeover switch provided on a communication path connecting a device installed in a higher-level control station and a station level of a substation monitoring and control system; and changing the state of the station-level control circuit changeover switch based on an operation on an operation means displayed on an interface screen.

[0083] As a result, the substation monitoring and control method allows the substation equipment to be controlled from the substation monitoring and control system even if the control circuit changeover switch at the station level becomes unable to be switched and remains in a remote state where the upper control station has control authority.

[0084] (10) Another embodiment of the present disclosure is a program for causing a computer to function as an HMI (Human Machine Interface) device in a substation monitoring and control system, the HMI device including: a memory unit that stores information indicating the state of a station-level control circuit changeover switch provided on a communication path connecting a device installed in a higher-level control station and a station level of the substation monitoring and control system; and a changeover unit that changes the state of the station-level control circuit changeover switch based on an operation on an operating means displayed on an interface screen.

[0085] This allows the program to have the computer control the substation equipment from the substation monitoring and control system, even if the station-level control circuit changeover switch becomes unable to be switched and remains in a remote state where control is given to the higher-level control station.

[0086] 1, 2, and 6, a program for realizing the functions of the HMI 22 and HMI 22a may be recorded on a computer-readable recording medium, and the program recorded on the recording medium may be read into a computer system and executed to realize the HMI 22 and 22a. Note that the term "computer system" here includes hardware such as the OS and peripheral devices.

[0087] "Computer-readable recording media" refers to portable media such as flexible disks, optical magnetic disks, ROMs, and CD-ROMs, as well as storage devices such as hard disks built into computer systems. Furthermore, "computer-readable recording media" also includes devices that dynamically store programs for a short period of time, such as communication lines used when transmitting programs over networks like the Internet or communication lines like telephone lines, and devices that store programs for a fixed period of time, such as volatile memory within the computer systems that serve as servers or clients. The programs may also be programs that implement some of the aforementioned functions, or may be programs that can realize the aforementioned functions in combination with programs already stored in the computer system.

[0088] The embodiments of this disclosure have been described in detail above with reference to the drawings, but the specific configuration is not limited to this embodiment, and design changes and the like are also included within the scope that does not deviate from the gist of this disclosure.

[0089] 11, 12 Upper control center 21 TC 21T, 31A, 31L, 32A, 32L, 51S, 51C, 52S, 52C 43 switch 22, 22a HMI 31, 32 IED 41 Line A Trans 51, 52 MU 61, 62 Switchgear 71, 72 Circuit breaker 100 Substation monitoring and control system 201 Memory unit 202 Information display unit 203 43 switch state determination unit 204 S / W type switch mode management unit 205 Warning dialog display unit 206 43 switch state switching unit 207 Change detection unit 208 Control right determination unit 209 List display unit 210 Equipment symbol identification display unit 211 Equipment selection command output unit 212 Warning unit 213 Switch identification unit 214 Switch information display unit 215 Changeover switch control unit 216 Switch determination unit 217 Switching impossible message display unit

Claims

1. An HMI (Human Machine Interface) device in a substation monitoring and control system, comprising: a memory unit that stores information indicating the state of a control circuit changeover switch at the station level that is provided on a communication path connecting a device installed in a higher-level control station with the station level of the substation monitoring and control system; and a switching unit that changes the state of the control circuit changeover switch at the station level based on operation of an operating means displayed on an interface screen.

2. The HMI device of claim 1, wherein the memory unit stores the actual state of the station-level control circuit changeover switch and the control authority management state of the station-level control circuit changeover switch as the state of the station-level control circuit changeover switch, and the changeover unit changes the control authority management state of the station-level control circuit changeover switch stored in the memory unit to a state in which equipment in the substation can be controlled from the substation monitoring and control system based on the operation.

3. The HMI device according to claim 1 or 2, further comprising a warning display unit that displays a warning regarding the state of the station-level control circuit changeover switch on the interface screen based on the operation before the switching unit changes the state of the station-level control circuit changeover switch.

4. The HMI device according to claim 1, further comprising a user verification unit that, before the switching unit changes the state of the station-level control circuit changeover switch, verifies the input user authentication information based on the operation against pre-stored authentication information.

5. A substation monitoring and control system comprising: a storage unit that stores information indicating the state of a station-level control circuit changeover switch provided on a communication path connecting a device installed in a higher-level control station and the station level of the substation monitoring and control system; and a changeover unit that changes the state of the station-level control circuit changeover switch based on an operation on an operation means displayed on an interface screen.

6. A substation monitoring and control system as claimed in claim 5, wherein the memory unit stores the actual state of the station-level control circuit changeover switch and the control authority management state of the station-level control circuit changeover switch as the state of the station-level control circuit changeover switch, and the changeover unit changes the control authority management state of the station-level control circuit changeover switch stored in the memory unit based on the operation to a state in which equipment in the substation can be controlled from the substation monitoring and control system.

7. The substation monitoring and control system according to claim 5 or 6, further comprising a warning display unit that displays a warning regarding the state of the station-level control circuit changeover switch on the interface screen based on the operation before the changeover unit changes the state of the station-level control circuit changeover switch.

8. The substation monitoring and control system according to claim 5, further comprising a user verification unit that verifies input user authentication information against pre-stored authentication information based on the operation before the switching unit changes the state of the station-level control circuit changeover switch.

9. The substation monitoring and control system of claim 5, further comprising a remote monitoring and control device, a bay control device, a local control panel, and a local panel.

10. A method for monitoring and controlling a substation, comprising: a step of storing information indicating the state of a station-level control circuit changeover switch provided on a communication path connecting a device installed in a higher-level control station and a station level of a substation monitoring and control system; and a step of changing the state of the station-level control circuit changeover switch based on an operation on an operation means displayed on an interface screen.

11. A program for causing a computer to function as an HMI (Human Machine Interface) device in a substation monitoring and control system, the HMI device comprising: a memory unit for storing information indicating the state of a station-level control circuit changeover switch provided on a communication path connecting a device installed in a higher-level control station with the station level of the substation monitoring and control system; and a switching unit for changing the state of the station-level control circuit changeover switch based on operation of an operating means displayed on an interface screen.

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