JP6238720B2 - Supervisory control system - Google Patents

Description

  The present invention relates to a supervisory control system between dual system supervisory control devices in power system control and the like, and in particular, a master station and a communication line provided with a normal mode and a standby mode installed at locations apart from each other This relates to the configuration control between the slave stations connected via the network.

In power systems, etc., to ensure system reliability, improve the reliability of system switching between the active system that is in charge of controlling the power system at that time and the standby system that is controlled in place when an abnormality occurs in the normal system A monitoring control system that can switch from the active system to the standby system even when failure information cannot be transferred between the active system and the standby system due to a network communication failure or the like has been conventionally employed.
As an example, the console connection status information indicating the connection status between the main computer and the console from the corresponding main computer, the means for inputting the MP connection status information input by the main computer, and a dedicated communication line The system management information of the other main computer is inputted by exchanging the system management information including the operation mode and failure information of each main computer by connecting to the system monitoring device of the other system by a certain inter-system link means. And whether to change the operation mode based on the input console connection status information, MP connection status information, and system management information, and outputs an operation mode transition command based on the determination result Each of the main computers operates in an operation mode based on an operation mode transition command output from the corresponding system monitoring device, and is simply a normal system. In addition to exchanging failure information between standby main computers, whether or not to change the operation mode taking into account the connection status between the upper console console and each main computer The technique to determine is shown (for example, refer patent document 1).

2008-299658

However, in the technique disclosed in Patent Document 1, it is necessary to install a dedicated line between the regular system and the standby system, which causes a problem of high cost, and furthermore, a large-scale that frequently occurs in recent years. Appropriate response is not always possible when a natural disaster occurs.
For example, due to the occurrence of a large earthquake over a wide area or the flooding of a river due to torrential rain, the central control room of the main power system installed in prefecture A, for example, the master station, is completely inoperable due to the disaster. On the other hand, when the soundness of the operation console of the standby power system central control room, which is the master station of B prefecture, and the multiple substations in A prefecture and B prefecture corresponding to the slave stations is maintained, Although there is a function that can automatically switch from the primary system to the standby system, it is not possible to exchange faults between the primary system and the standby system due to the damage of the normal system. Because it becomes possible, it is not possible to automatically switch the mode to make the parent station of A prefecture the standby system and the parent station of B prefecture to the regular system, and as a result, there is a problem that it takes time for disaster recovery. is there.

  The present invention has been made to solve the above-described problems, and provides a monitoring and control system that eliminates the need to install a dedicated communication line between an active system and a standby system that are master stations, and By enabling the active and standby master stations to transmit the status of their own master station to the other master station via the slave station, the status of their own station via the slave station, It is an object of the present invention to provide a supervisory control system that can exchange the status of a station.

The supervisory control system according to the first aspect of the present invention is an active master station and a standby master station that are installed at different locations and perform system management, and a plurality of children connected to the active master station and the standby master station via communication lines. In the supervisory control system provided with the station, the system management information including the operation mode of the own station transmitted from the active master station and the standby master station is stored in one of the specified slave stations. System management information transmitted through the slave station and transmitted from the primary master station and the standby master station and including the operation mode of the local station is added to the one slave station specified in the plurality of slave stations. a it shall be sent also through slave station of the at least one other station.

Further, a plurality of monitoring and control system of the second aspect of the invention is connected via a conventional system master station performing installed in a different location system administration and standby master station, the communication line to the common system master station and standby master station in the slave station and is provided with monitoring and control system, the first slave station among the plurality of slave stations, to detect the abnormality phenomena in the communication between the conventional system master station, the first slave station waits A plurality of slave stations that transmit to the primary master station to switch to the normal operation mode and that the standby master station switches to the active master station from the normal operation mode to the standby operation mode. Is transmitted via the second slave station .

The supervisory control system according to the third aspect of the invention is connected to an active master station and a standby master station that are installed in different locations and perform system management, and are connected to the active master station and the standby master station via a communication line. In a supervisory control system provided with a plurality of slave stations, the plurality of slave stations are set with a priority order to be transmitted to the standby master station so as to switch to the normal operation mode. When relevant slave station according priority there is to detect the abnormality phenomena in the communication between the conventional system master station, a slave station of the next priority of the corresponding slave station with respect to the standby master station The standby master station sends a message to switch to the normal operation mode, and the standby master station has the next priority child of the corresponding slave station to switch from the normal operation mode to the standby operation mode. station sent via a common system master station, waiting But the priority order display section provided in the slave station of the next priority master station and the corresponding slave station priority set in the slave station of the next priority of the relevant slave station is displayed is there.

  Since the supervisory control system according to the first invention adopts the configuration as described above, it is necessary even if a dedicated communication line is not installed between the remote master station and the standby master station. Information can be exchanged, and the system can be monitored and controlled.

  In addition, since the monitoring control system according to the second invention adopts the above-described configuration, even if communication from the regular master station is interrupted, the slave station detects this abnormality occurrence information and the operation mode Since switching is performed, monitoring control can be continued stably.

  In addition, since the supervisory control system according to the third invention adopts the above-described configuration, no dedicated communication line is required between the active master station and the standby master station, and the slave station is the main constituent. Thus, there is an effect that the master station is managed and stable monitoring and control becomes possible.

1 is a block diagram illustrating a monitoring control system according to Embodiment 1. FIG. It is a block diagram which shows the monitoring control system by Embodiment 2. FIG. 10 is a block diagram illustrating a monitoring control system according to a third embodiment. FIG. 10 is a block diagram illustrating a monitoring control system according to a fourth embodiment. FIG. 10 is a block diagram illustrating a monitoring control system according to a fifth embodiment. FIG. 10 is a diagram showing channel connection in the fifth embodiment.

Embodiment 1 FIG.
A monitoring control system according to Embodiment 1 of the present invention will be described below with reference to the drawings.
FIG. 1 shows a supervisory control system 100 used in an electric power system, which is installed remotely and has an active master station 20a that performs system management of the electric power system at that time, and when an abnormality occurs in the active master station 20a. FIG. 2 is a block diagram showing an alternative standby master station 20b and a slave station 30 connected to the standby master station 20b via communication lines 40a and 40b. Although only a specific slave station 30 is shown in FIG. 1 as will be described later, a plurality of non-specific slave stations other than those shown are installed. In this supervisory control system 100, the regular master station 20a is installed in the central control room of each power system in A prefecture, and the standby master station 20b is installed in each central power room in B prefecture. It is installed in a substation. The common master station 20a and the standby master station 20b are provided with the same components, and each component will be described below with the regular master station 20a. The CPU 1 of the active master station 20 a is provided with a mode management unit 1 a for managing the operation mode of the own station, and between the status display unit 2 a for displaying the status of the operation mode connected to the CPU 1 and the slave station 30. A line I / F unit 3 is provided. Here, the mode management unit 1a of the active master station 20a is set in advance to actively monitor and control the active system, that is, the monitoring control system 100 at that time, and the status display unit 2a indicates, for example, “normal”. Is displayed. On the other hand, the mode management unit 1b of the standby master station 20b is a standby system at that time, and “standby” is displayed on the status display unit 2b, for example.
The slave station 30 is provided with a CPU 31, a line I / F unit 34, and an input / output unit 32. The input / output unit 32 is connected to a plurality of power devices to be monitored and controlled. As shown in FIG. 1, conventional system master station 20a and the slave station 30 are connected via a communication line 40a also standby master station 20b and the slave station 30 are connected via a communication line 40b, the operation of the master station Information about the mode , in this case, the fact that the active master station 20a is in the active operation mode is communicated with the standby master station 20b via the specific slave station 30 among the plurality of slave stations. Sent through. Receiving this, the CPU 1 of the standby master station 20b recognizes that the own station is a standby system, and displays, for example, “standby” on the status display unit 2b. The standby master station 20b notifies the active master station 20a via the slave station 30 that the own station is a standby system.

The monitoring control system 100 configured as described above is installed at a location where the active master station 20a and the standby master station 20b are separated from each other, and these master stations are connected to each other via the slave station 30. Is transmitted to the parent station of another system, and there is an effect that monitoring control is possible without installing a dedicated communication line between the parent stations as in the prior art.
In the first embodiment, the slave station is a specific one slave station 30. However, in addition to the specific one station, at least one other station is added or all the slave stations are connected. It may be a station.

Embodiment 2. FIG.
In the first embodiment, information related to the operation mode of each parent station is transmitted / received between the active parent station 20a and the standby parent station 20b via one specific slave station 30. In the second embodiment, as shown in FIG. 2, the first slave station 30a and the second slave station 30b, which are, for example, three specified stations out of a plurality of slave stations in place of the specific station described above. And a function of transmitting and receiving information on the operation mode of each parent station via the third slave station 30c. Here, the internal components of the active master station 20a, standby master station 20b, and first to third slave stations 30a to 30c shown in FIG. Is omitted. As shown in FIG. 2, the active master station 20a is connected to the first slave station 30a via the communication line 40a-1, the second slave station 30b via the communication line 40a-2, and the third via the communication line 40a-3. Similarly, the standby master station 20b is connected to the first slave station 30a to the third slave station 30c through the communication lines 40b-1, 40b-2, and 40b-3, respectively. .
In the monitoring control system 100 having such a configuration, the communication lines 40a-1 to 40b-3 and the first slave station 30a to the third slave station indicate that the active master station 20a is in the normal operation mode. 30c is transmitted to the standby master station 20b via the communication line 40a-1 to 40b-3 and the first slave station 30a to the third slave that the standby master station 20b is in the standby operation mode. Since the data is transmitted to the active master station 20a via the station 30c, the above-described embodiment can be used even when an abnormal phenomenon occurs in any one or two of the communication lines 40a-1 to 40b-3. 1, it is possible to transmit / receive information regarding the operation mode between the active master station 20a and the standby master station 20b. In addition, although the case where the number of installed slave stations is three has been shown, it may be replaced with several slave stations, which are 2 to 6 stations identified from among many slave stations. Moreover, although transmitting / receiving only the operation mode was described, system management information including the operation mode may be used.

Embodiment 3 FIG.
Next, a third embodiment will be described. In this third embodiment, in addition to the transmission / reception of system management information including the operation mode between the master stations via the slave station, the slave station monitors the line status between the slave station and the master station, and when an abnormality is detected, The standby master station notifies the standby master station of the abnormality, and the standby master station receives the line abnormality notification from the slave station and switches the operation mode to the regular master station.
For example, in FIG. 3, when an abnormal phenomenon occurs in the communication line 40a-1, the first slave station 30a transmits the information to the standby master station 20b, and the standby master station 20b that receives the information transmits the information to the standby master station 20b. At the same time, the operation mode is switched, and transmission is performed to the active master station 20a via the second slave station 30b so as to switch to the standby operation mode.
The above is a case where an abnormality occurs in the communication line 40a-1, but the same switching can be performed even when an abnormal phenomenon occurs in the active parent station 20a or the standby parent station 20b.

The operation of the third embodiment will be described with reference to two cases where an abnormal phenomenon occurs in the master station and an abnormal phenomenon occurs in the communication line for the slave station. In FIG. 3, the number of slave stations is two for convenience of explanation. In FIG. 3, the case where an abnormality occurs in the master station will be described first. For example, in the power system monitoring and control system 100 in A prefecture and B prefecture, a large-scale earthquake occurs in a wide area, and the regular master station 20a installed in the central control room of A prefecture becomes inoperable. In the case where no abnormal phenomenon occurs in the standby master station 20b installed in the prefecture and the first slave station 30a and the second slave station 30b installed in the prefectures A and B, the first The abnormality detecting unit 31b of the CPU 31 of the slave station 30a detects that communication from the active master station 20a has been interrupted, and the line switching unit 31a transmits an operation mode switching command signal to the standby master station 20b. To do. The mode management unit 1b of the standby master station 20b that receives this switches the operation mode from the standby system to the regular system, and displays “normal” on the status display unit 2b. And transmits this way the first child station 30a is toggle its switching command signal to the common system parent a standby master station 20b to detect the occurrence of abnormal phenomenon in conventional system master station 20a which is one of the master station The power system can be monitored and controlled continuously.

Next, in the monitoring control system 100, for example, an operation when an abnormal phenomenon occurs in the communication line 40a-1 between the active master station 20a and the first slave station 30a will be described. Abnormality detecting unit 31b provided in the CPU 3 1 of the first slave station 30a detects the occurrence of the abnormal phenomenon of the communication line 40a-1, the line switching unit 31a to mode management section 1b of the standby master station 20b Command to switch the operation mode from the standby system to the regular system. The standby master station 20b that receives the message switches to the active system, displays “usually” on the status display unit 2b, and displays “communication line 40a-1 abnormality” on the line abnormality display unit 4b for the slave station. Further, the standby master station 20b, which has been switched to the regular master station, functions as a master station for the first slave station 30a and the second slave station 30b via the communication lines 40b-1 and 40b-2. At the same time, the mode management unit 1a of the CPU 1 of the active master station 20a that receives the command sends the command to switch the active master station 20a to the standby operation mode by communication via the second slave station 30b. The system is switched to the standby system, and “standby” is displayed on the status display unit 2a. Further, the “abnormal communication line 40a-1” is displayed on the slave station line abnormality display section 4a. In this way, the slave station switches the operation mode from the active system to the standby system by detecting an abnormality in the communication line between the slave station and the master station. It is also possible to switch from the regular system to the standby system by detecting a line abnormality with the slave station.

  The above description is for the case where an abnormal phenomenon occurs in the communication line 40a-1 which is a communication line for the slave station, but the case where an abnormal phenomenon occurs in the communication line 40b-1 or other communication lines. Performs the same operation as described above. Further, even when the abnormal phenomenon as described above occurs after the standby master station 20b is switched to the normal operation mode, the same operation is performed. Thus, even when an abnormal phenomenon occurs in the master station or the communication line, the operation mode can be quickly switched, and the abnormality occurrence location is displayed on the communication line abnormality display parts 4a and 4b on the communication line. Therefore, it is possible to provide the supervisory control system 100 that can quickly determine the location of an abnormality in the entire system and ensure redundancy.

Embodiment 4 FIG.
In the fourth embodiment, as in the third embodiment described above, the slave station is mainly responsible for instructing the master station.
FIG. 4A is a schematic block diagram of the monitoring control system 100, and description of components provided therein is omitted.
FIG. 4B shows the internal configuration of the regular master station 20a and the standby master station 20b. The common master station 20a and the standby master station 20b are provided with the same constituent elements, and the first slave station 30a to the third slave station 30c shown in FIG. Yes. Here, for the convenience of explanation, the configurations of the regular master station 20a and the standby master station 20b will be described for the regular master station 20a. The active master station 20a includes a CPU 1, a status display unit 2a, a line I / F unit 3, a slave station line abnormality display unit 4a, and a priority display unit 5a. The CPU 1 includes a mode management unit 1a and an abnormality detection unit 1c. Is provided. Further, the internal configuration of the first slave station 30a to the third slave station 30c includes a CPU 31, an input / output unit 32, a line I / F unit 34, and a priority display unit 35. The CPU 31 includes a line switching unit 31a, a master station. A mode management unit 33 and an abnormality detection unit 31b are provided respectively. Priorities for controlling the three slave stations with respect to two stations, the regular master station 20a and the standby master station 20b, are provided in advance. That is, the first priority is set for the first slave station 30a, and one master station is set as the active master station 20a and the other is set as the standby master station 20b according to the command of the first slave station 30a. Is done. The second slave station 30b is set with the second priority of the master station setting, and the third slave station 30c is set with the third priority.
Next, the operation will be described. For example, “priority order 1” is displayed on the priority order display section 35 of the first slave station 30a having the first priority order set in advance, and the master station mode management section 33 of the CPU 31 has two A signal is sent to the master station, one of which is the regular master station 20a and the other is the standby master station 20b. The mode management unit 1a of one master station that receives this via the communication line 40a-1 recognizes that it operates as a regular master station and displays “ordinary” on the status display unit 2a. By displaying “priority order 1” on the priority order display section 5a as the station 20a, it is understood that the station 20a is under the control of the first slave station 30a. Also, the mode manager 1b of the other master station that receives via the communication line 40b-1 recognizes that it operates as a standby master station, displays “standby” on the status display part 2b, and displays the standby master station. By displaying “priority 1” on the priority display unit 5b as 20b, it can be seen that the control has been under the control of the first slave station 30a. When any abnormal phenomenon occurs in the first slave station 30a, the operation as described above is sequentially performed in accordance with a command from the second slave station 30b. In the fourth embodiment having such a configuration, there is no need to install a dedicated communication line between the active master station 20a and the standby master station 20b, and the cost can be reduced. Similarly, there is an effect that it is possible to cope with the occurrence of an abnormal phenomenon in the master station or communication line. Although the number of slave stations in the fourth embodiment is three stations of the first slave station 30a to the third slave station 30c, it may be all the slave stations installed in the monitoring control system 100. Three specified stations may be used.

Embodiment 5. FIG.
In the fifth embodiment, the mode is switched in units of communication lines to the mode management unit (channel unit) 1a of the CPU 1 of the active master station 20a and the mode management unit (channel unit) 1b of the CPU 1 of the standby master station 20b. It is the monitoring control system 100 provided with the structure which can do. Here, FIG. 5A is a block diagram showing the supervisory control system 100, and the first slave station 30a to the third slave are connected by the communication lines 40a-1 to 40b-3 in the same manner as FIG. 4A described above. The station 30c, the regular master station 20a, and the standby master station 20b are connected to each other. FIG. 5B shows the internal configuration of the active master station 20a and the standby master station 20b, and the illustration of channels 1 to 3 described later in FIG. 6 is omitted. FIG. 5C shows the internal configuration of the first slave station 30a, the second slave station 30b, and the third slave station 30c, and these three stations are provided with the same components. In FIG. 5 (B), the description related to the constituent elements other than the mode management units 1a and 1b, which will be described later as a description of the master station, will be described on behalf of the regular master station 20a. The active master station 20a is provided with a CPU 1, a status display section 2a, a line I / F section 3, and a slave station line abnormality display section 4a. The CPU 1 is provided with a mode management section (channel unit) 1a. ing. Since the constituent elements other than the mode management unit (channel unit) 1a perform the same functions and operations as those of the fourth embodiment described above, description thereof will be omitted. The components of the first slave station 30a to the third slave station 30c shown in FIG. 5C are the same as those of the fourth embodiment except for the priority order display unit 35 of the fourth embodiment. Since there is, explanation is omitted. The mode management unit (channel unit) 1a has a function of switching modes for each slave station unit (channel unit) with the first slave station 30a, the second slave station 30b, and the third slave station 30c.

FIG. 6 shows a communication line 40a- between the three channels 21, 21, and 23 provided in the active master station 20a and the standby master station 20b and the first slave station 30a to the third slave station 30c. The connection state by 1-40b-3 is shown. As can be seen from FIG. 6, the channel 21 of the active master station 20a and the standby master station 20b has a first slave station 30a, the channel 22 has a second slave station 30b, and the channel 23 has a third slave station. Stations 30c are connected via communication lines 40a-1 to 40b-3, respectively. The operation of such a configuration will be described. For example, when an abnormal phenomenon occurs in the communication line 40a-2 connected to the channel 22 of the active master station 20a and the second slave station 30b, the master station mode management unit 33 of the CPU 31 of the second slave station 30b. Transmits a mode switching signal to the standby master station 20b via the communication line 40b-2 and receives it, the mode management unit (channel unit) 1b of the CPU 1 via the channel 22 of the standby master station 20b is Operates to switch to the regular master station. The active master station 20a that receives the fact that its own station (the original standby master station 20b) has been switched to the active master station via the first slave station 30a via the communication line 40b-1 of the channel 21. The mode management unit (channel unit) 1a of the CPU 1 switches modes so that it becomes a standby master station. The state of the own station after completion of the mode switching described above is displayed on the respective status display units 2a and 2b. As described above, in the fifth embodiment, for example, the second slave station 30b and the master station (the active master station 20a and the standby master station 20b) corresponding to the mode switching derived from the occurrence of an abnormality in the communication line 40a-2. ), That is, only the signal for channel 22 is exchanged, and the operation can be continued without affecting the first slave station 30a and the third slave station 30c without any mode switching factor. in addition to the effect that there, attained even improve the operation of the monitoring and control system 100 in the case of double failure of the communication line 40a-1 through 40b-3 if example embodiment has occurred.

  In the first to fifth embodiments described above, the primary master station 20a and the standby master station 20b are each one station. In addition, the number of the first slave station 30a to the third slave station 30c is not limited to the above embodiment.

  It should be noted that within the scope of the present invention, the embodiments can be freely combined, or the embodiments can be appropriately modified or omitted.

1 CPU, 1a, 1b mode management unit, 1c abnormality detection unit,
2a, 2b Status display section, 4a, 4b Slave station direction line abnormality display section, 20a Common-use master station,
20b Standby master station, 30 slave stations, 30a first slave station, 30b second slave station,
30c Third slave station, 31 CPU, 31a Line switching unit, 31b Abnormality detection unit,
33 master station mode management section, 35 priority display section,
40a, 40b, 40a-1 to 40b-3 communication line, 100 monitoring control system.

Claims (6)

Monitoring provided with an active master station and a standby master station that are installed at different locations and perform system management, and a plurality of slave stations connected to the active master station and the standby master station via communication lines In the control system, the information of the system management including the operation mode of the own station transmitted from the active master station and the standby master station indicates one specified slave station among the plurality of slave stations. Sent through
In addition to the one slave station specified in the plurality of slave stations, the system management information including the operation mode of the own station transmitted from the regular master station and the standby master station is at least other A supervisory control system characterized by being transmitted via one slave station. Monitoring provided with an active master station and a standby master station that are installed at different locations and perform system management, and a plurality of slave stations connected to the active master station and the standby master station via communication lines in the control system, the first slave station among the plurality of slave stations, detects the abnormal phenomenon in the communication between the conventional system master station, the first slave station to the standby master station Of the plurality of slave stations so as to switch from the normal operation mode to the standby operation mode to the active master station. A supervisory control system, characterized in that transmission is performed via a second slave station . Monitoring provided with an active master station and a standby master station that are installed at different locations and perform system management, and a plurality of slave stations connected to the active master station and the standby master station via communication lines In the control system, the plurality of slave stations are set with a priority order for transmitting to the standby master station so as to switch to a normal operation mode, and the slave stations are in accordance with the priority order. When appropriate slave station detects abnormality phenomena in the communication between the conventional system master station, the operation mode of the conventional system slave station of the next priority of the corresponding slave station to the standby master station And the standby master station sets the slave station of the next priority of the corresponding slave station so that the standby master station switches from the normal operation mode to the standby operation mode. Via the regular master station Priority The priority display unit provided in the slave station of the next priority of the standby master station and the relevant slave station is set in the slave station of the next priority of the corresponding slave station Is displayed on the monitor and control system. The monitoring control system according to claim 2, wherein the abnormality occurrence phenomenon detected by the slave station is an abnormality occurrence phenomenon of the regular master station. The communication line in which an abnormal phenomenon has occurred in the communication line for the slave station is displayed on a slave station-oriented line abnormality display section provided in the regular master station and the standby master station. Item 3. The supervisory control system according to item 2. The communication line is connected in units of channels provided in the active master station, the standby master station, and the slave station, and the switching of the channel unit is made to the active master station and the standby master station. 4. The operation mode switching command is transmitted to the slave station connected in units of channels while being performed by a mode management unit provided. 5. Supervisory control system.

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