JP2003295902A - Monitoring and control equipment - Google Patents

Abstract

(57) [Problem] To enable a recovery in a short time without temporarily interrupting the operation even when a display device of a monitoring control device fails. SOLUTION: This monitoring and control device monitors and controls control devices in a substation, and includes two processing devices 1A and 1B and display devices 2A and 2B connected to the processing devices 1A and 1B, respectively. It is connected to a control device via a network 5 to monitor and control the control device, and the other processing device 1B is connected to a communication line 7 with the processing device 1A.
The monitoring of the entire control equipment in the control system is executed based on the information passed through, and the provision of the display signal switch 10 enables the connection between the processing devices 1A, 1B and the display devices 2A, 2B to be switched.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a supervisory control device for control equipment in a control system, and more particularly to a supervisory control device for supervising and controlling a control panel in a substation.

[0002]

2. Description of the Related Art FIG. 6 is a block diagram showing the structure of a conventional monitoring control apparatus for a substation. In the figure, there are two processing devices of the monitoring control device, and 21A is a processing device that executes monitoring and control for a control panel (not shown) in the substation,
Reference numeral 21B is a processing device that only monitors the entire control panel (not shown) in the substation. In addition, the processing device 21
A and 21B have the same hardware function, but the software has its own software (21A is software for performing monitoring and control, 21B is software for performing monitoring). There is.

Further, in the supervisory control device of FIG. 6, there are two display devices for displaying the state of the equipment (not shown) of the control panel in the substation and its control processing, and 22A is the above processing apparatus 21A. A display device connected by the display signal line 23A and a display device 22B connected by the display signal line 23B with the processing device 21B.

Reference numeral 24 is a supervisory control signal line branched from the LAN cable 25, 25 is a LAN cable connecting a control panel (not shown) in the substation and the supervisory control device, and 26 is a supervisory control signal branched from the LAN cable 25. A transceiver, 27 is a communication line connecting between the two processing devices 21A and 21B, 28 is a power line, and 29 is a monitor control device power-on switch.

Next, the operation of the conventional supervisory control device shown in FIG. 6 will be described. The supervisory control device and the control panel (not shown) in the substation include a supervisory control signal line 24, a transceiver 26,
It is connected via the LAN cable 25, and only one of the two processing devices 21A is directly connected to the LAN cable 25. Processing device 21A
Monitors and controls the equipment in the substation via the monitor control signal line 24, the transceiver 26, and the LAN cable 25, and displays the monitor state and the control state on the display device 22A via the display signal line 23A.

While the processing device 21A is executing control of the control panel equipment in the substation, the display on the display device 22A is a screen display related to the control, and therefore the monitoring screen of the entire substation cannot be displayed. Therefore, the second processing device 21B
The processing device 21A sends monitoring information to the processing device 21A via the communication line 7, and the monitoring status of the control panel of the entire substation is displayed on the display device 22B connected to the processing device 21B.

In the prior art of FIG. 6, the processing device 21A
The display device 22A executes monitoring and control, which are essential functions as a monitor and control device, and the processing device 21B and the display device 22B share only the monitoring, which is an auxiliary function. Further, the power supplies of the processing devices 21A and 21B and the display devices 22A and 22B are supplied from a power supply line 28, and are collectively controlled by a supervisory control device power-on switch 29.

[0008]

As described above, in the conventional monitoring control device, the processing devices 21A and 21B and the display devices 22A and 22B are directly connected to each other. If the display unit 22A that controls the control unit) fails, it is necessary to replace the cables 23A and 23B or replace the display unit 22A, and there is a problem that the operation is temporarily interrupted.

Further, in the conventional supervisory control device, although the processing devices 21A and 21B and the display devices 22A and 22B exist in two sets, the processing device 21A is connected to the LAN cable 25.
Since only the connection is made, if the processing device 21A that manages the essential functions (monitoring and control) as the monitoring control device fails, the processing device 21A needs to be replaced, and there is a problem that the operation is temporarily interrupted.

Further, in the conventional supervisory control device, power is supplied to all the processing devices 21A, 21B and the display devices 22A, 22B by the power supply line 28 of one system, so that the power supply is transient. There was a problem that a power supply with a capacity sufficient to withstand the load was required.

The present invention has been made in order to solve the above problems, and provides a supervisory control device which does not interrupt operation for a long time even when a processing device or a display device fails. The purpose is to

Another object of the present invention is to introduce a power-on control device so that the processing device and the display device are sequentially powered on so that the power can be operated with a power source having a small capacity.

[0013]

A first aspect of the present invention is a monitoring control device for monitoring and controlling a control device in a control system, which is a display device 2A connected to two processing devices 1A and 1B. , 2B, one processing device 1A is connected to the control device via a network to execute monitoring and control of the control device, and the other processing device 1B is connected via a communication line with the processing device 1A. Information is used to monitor the entire control device in the control system, and the connection between the processing devices 1A and 1B and the display devices 2A and 2B can be switched.

A second aspect of the present invention is a supervisory control device for monitoring and controlling a control device in a control system, which comprises two processing devices 1A and 1B and a display device 2A connected to each of them.
2B, one processing device 1A is connected to the control device via a network to monitor and control the control device, and the other processing device 1B is connected to the control device via a network and performs the processing. It is connected to the device 1A via a communication line, and normally, the entire control equipment in the control system is monitored by the information via the communication line with the processing device 1A, and when the processing device 1A fails. It is characterized in that monitoring and control of the control device are executed based on information via the network with the control device.

A third aspect of the present invention is a supervisory control device for monitoring and controlling a control device in a control system, comprising a plurality of processing devices connected to the control device in the control system to perform monitoring or control. , A display device connected to each of the processing devices, and a power-on control device for sequentially turning on the power supplies of the processing device and the display device.

In a fourth aspect of the invention, the power-on control device is
A drive signal is sequentially input to coils of a keep relay inserted in power lines of the processing device and the display device, and the relay contacts are sequentially connected.

A fifth invention is characterized in that, in the third or fourth invention, the power supplies of the processing device and the display device and the power supply of the power-on control device can be individually turned on.

A sixth invention is characterized in that, in the fourth or fifth invention, the power-on control device is provided with a function capable of resetting the relay contacts inserted in the power lines of the processing device and the display device. .

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiment 1. 1 is a block diagram showing the configuration of a supervisory control apparatus according to Embodiment 1 of the present invention. In the figure, there are two processing devices of the supervisory control device, 1A is a processing device for monitoring and controlling a control panel (not shown) in the substation, and 1B is the entire control panel in the substation (not shown). No.) is a processing device that only monitors. Further, the processing devices 1A and 1B have the same hardware function, but the software is unique software (1A is software for performing monitoring and control, 1B is software for performing monitoring). Has been implemented. Further, the processing devices 1A and 1B have display signal lines 3Aa and 3Ba for connecting to a display device described later.

Further, in the present embodiment, there are two display devices 2A and 2B for displaying the state of the equipment (not shown) of the control panel in the substation and its control processing. It has display signal lines 3Ab and 3Bb for connecting to the device. The display signal switch 10 is
Two processing devices 1A, 1B (display signal lines 3Aa, 3B
a) and two display devices 2A, 2B (display signal line 3Ab,
It is for switching the connection between 3Bb).

4 is branched from the LAN cable 5 and the above 1
Monitor control signal lines for connecting to one processing unit 1A, 5
Is a LAN cable that connects a control panel (not shown) in the substation and the monitoring control device, 6 is a transceiver that branches the monitoring control signal from the LAN cable 5, and 7 is communication that connects the two processing devices 1A and 1B Reference numeral 8 is a power supply line, and 9 is a monitor control device power-on switch.

Next, the operation of the supervisory control device of this embodiment will be described. The supervisory control device and the control panel (not shown) in the substation are the supervisory control signal line 4, the transceiver 6,
The connection is made via the LAN cable 5, and only one of the two processing devices 1A is directly connected to the LAN cable 5. The processing device 1A monitors and controls the equipment in the substation via the monitoring control signal line 4, the transceiver 6, and the LAN cable 5. Here, normally, the display signal switch 10 connects the display signal line 3Aa of the processing device 1A and the display signal line 3Ab of the display device 2A, and the monitoring state and control state by the processing device 1A are displayed on the display device 2A. Is displayed.

While the processing device 1A is executing the control of the equipment in the substation, the display on the display device 2A becomes a screen display related to the control, so that the monitoring screen of the entire substation cannot be displayed. Therefore, the monitoring information is sent from the processing device 1A to the second processing device 1B via the communication line 7. Here, normally, the display signal switch 10 connects the display signal line 3Ba of the processing device 1B and the display signal line 3Bb of the display device 2B, and the entire substation is on the display device 2B connected to the processing device 1B. The monitoring status of is displayed.

That is, normally, the processing device 1A and the display device 2A execute the monitoring and control which are indispensable functions as the monitoring control device, and the processing device 1B and the display device 2B perform only the auxiliary function monitoring. It is configured to share. Further, the power supplies of the processing devices 1A and 1B and the display devices 2A and 2B are supplied from the power supply line 8 and are collectively controlled by the supervisory control device power-on switch 9.

In the present embodiment, when the display device 2A fails, the display signal switching device 10 switches to connect the display signal line 3Aa of the processing device 1A and the display signal line 3Bb of the display device 2B. As a result, it is possible to reconnect the cables between the processing devices 1A and 1B and the display devices 2A and 2B and replace the display devices, unlike the conventional case.
By the processing device 1A and the display device 2B, it becomes possible to execute monitoring and control, which are essential functions as a monitoring control device.

As described above, according to the first embodiment, the connection between the two processing devices 1A and 1B and the display devices 2A and 2B can be switched, so that the operation interruption time can be shortened. A highly reliable monitoring control device can be provided.

Embodiment 2. 2 is a block diagram showing a configuration of a supervisory control device according to Embodiment 2 of the present invention. In the figure, there are two processing devices of the supervisory control device, 1A is a processing device that monitors and controls a control panel (not shown) in the substation, and 1B is the entire control panel in the substation at normal times. Perform only monitoring on (not shown), 1
It is a processing device that monitors and controls the control panel in the substation when A fails. Further, the processing devices 1A and 1B have the same hardware function, and the processing device 1A executes software for executing monitoring and control, and the processing device 1B normally executes only monitoring, and when the processing device 1A fails. Implements software that can switch functions to perform monitoring and control.

Further, the processing devices 1A and 1B are connected to the display devices 2A and 2B through the display signal lines 3A and 3B, respectively, and the control panel equipment (not shown) in the substation, respectively.
The status of and the control processing etc. are displayed.

Reference numeral 5 is a LAN cable for connecting a control panel (not shown) in the substation and a monitor control device.
The monitor control signal lines 4A and 4B are branched from the cable 5 via the transceivers 6A and 6B, and the branched monitor control signal lines 4A and 4B are connected to the processing devices 1A and 1B, respectively. 7 is two processing devices 1A, 1B
A communication line connecting the two, a power line 8 and a power supply switch 9 for the monitor controller.

Next, the operation of the supervisory control device of this embodiment will be described. Under normal conditions, one of the two processing devices is the processing device 1A, the monitoring control signal line 4A, and the transceiver 6
A, connected to a control panel (not shown) in the substation via the LAN cable 5 to monitor and control the control equipment in the substation. Then, the monitoring status and control status of the processing device 1A are displayed on the display device 2A. While the processing device 1A is executing the control of the equipment in the substation, the display on the display device 2A is a screen display related to the control, so that the monitoring screen of the entire substation cannot be displayed. Therefore, the monitoring information is sent from the processing device 1A to the second processing device 1B via the communication line 7, and the monitoring status of the entire substation is displayed on the display device 2B connected to the processing device 1B.

That is, normally, the processing device 1A and the display device 2A are connected to the control panel of the substation through a network, and perform the monitoring and control, which are essential functions as a monitoring control device, and the processing device 1B and the display device 2B. Is configured to share only the monitoring, which is an auxiliary function.

In the present embodiment, when the processing device 1A fails, another processing device 1B passes through the supervisory control signal line 4B, the transceiver 6B and the LAN cable 5 and the control board (not shown) in the substation. No.) to monitor and control the control equipment in the substation. And the processing device 1
The monitoring status and control status by B are displayed on the display device 2B.

That is, when the processing device 1A is out of order, the processing device 1B and the display device 2B are connected to the control panel of the substation via a network and execute the monitoring and control which are essential functions as the monitoring control device.

As described above, according to the second embodiment, the two processing devices 1A and 1B are connected to the LAN 5 and the processing device 1
When A fails, the function is switched by changing the software setting of the processing apparatus 1B (the processing apparatus 1A executes monitoring and control before switching, the processing apparatus 1B executes monitoring only, and the processing apparatus 1B monitors and controls after switching. Since it is configured to execute control), it becomes possible to perform monitoring control by the processing device 1B, and it is possible to provide a highly reliable monitoring control device with a short operation interruption time.

Embodiment 3. 3 is a block diagram showing a configuration of a supervisory control device according to Embodiment 3 of the present invention. In the figure, processing devices 1A and 1B and a display device 2 are shown.
The contacts of the keep relays 11A, 11B, 11C and 11D are installed on the respective power supply lines 8a of A and 2B, and the keep relays 11A, 11B, 11C and 11D are also provided.
The keep relay drive signal line 12 of the power-on control device 13 is connected to the coil side of. The power-on control device 13 sequentially inputs the keep relay drive signal to the coils of the keep relays 11A, 11B, 11C, 11D via the keep relay drive signal line 12, and the processing devices 1A, 1B and the display device 2 are supplied.
The power supplies A and 2B are sequentially turned on. The rest of the configuration and operation are similar to those of the first embodiment, and therefore their explanations are omitted.

As described above, in the third embodiment, the contacts of the keep relays 11A, 11B, 11C and 11D are inserted into the power supply lines 8a of the processing devices 1A and 1B and the display devices 2A and 2B, and the power supply of the supervisory control device is turned on. Sometimes, the keep relay drive signals output from the power-on control device 13 are passed through the keep relay drive signal line 12 to keep relays 11A, 11B, 1
By sequentially inputting to the coils 1C and 11D, it is possible to suppress the inrush current value when the power is turned on. As a result, the power supply capacity can be reduced, and an economically superior monitoring control device can be provided.

The power-on control device of the third embodiment can be arranged with respect to the monitoring control device having the configuration of the first and second embodiments. Further, the power-on control device may be arranged with respect to the monitoring control device including a plurality of sets of processing devices and display devices.

Fourth Embodiment In the third embodiment, the power-on control device is provided to turn on the power supplies of the processing device and the display device in order. In the fourth embodiment, the power supplies of the processing device and the display device and the power supply of the power-on control device can be individually turned on.

FIG. 4 is a block diagram showing the configuration of the supervisory control device according to the fourth embodiment of the present invention. In the figure,
Power supply line 8 for the processing devices 1A and 1B and the display devices 2A and 2B
The switch 14 for turning on the power supply of the processing device and the display device is inserted into a. The other configurations and operations are the same as those in the third embodiment.
Is the same as.

According to the fourth embodiment, the processing devices 1A, 1
B and the display devices 2A and 2B are not turned on,
It is possible to perform maintenance such as changing the settings of the power-on control device 13. As a result, it is possible to provide a monitoring control device that can safely perform a test after setting change without affecting the monitoring control of the control system.

Embodiment 5. In the fourth embodiment, the efficiency of the test is improved by providing the power-on switch 14 for the processing devices 1A and 1B and the display devices 2A and 2B.
In the fifth embodiment, the power-on control device 13 is provided with the function of resetting the relay contacts for powering on the processing devices 1A and 1B and the display devices 2A and 2B.

FIG. 5 is a block diagram showing the configuration of the supervisory control device according to the fifth embodiment of the present invention. In the figure,
A power-on relay reset signal line 15 and a power-on relay reset switch 16 are prepared for the power-on control device 13.

According to the fifth embodiment, the power-on switch 14 for the processing device and the display device is turned off when the system is started up after an abnormal termination due to the contact state of the keep relays 11A to 11D due to a sudden power failure or the like. In addition, with the power supply switch 9 for the monitor control device turned on, the power supply control device 1
Only start 3 and power on relay reset switch 1
After switching all the contacts of the keep relays 11A to 11D to the off state by the operation of 6, the monitoring control device power-on switch 9 is turned off, and the processing device and the display device power-on switch 14
The system can be normally started up by turning on the power switch 9 for the monitor and control device in the ON state.

[0044]

As described above, according to the first aspect of the invention, the connection between the processing units 1A and 1B and the display units 2A and 2B can be switched, so that the operation interruption time can be shortened. A highly reliable monitoring control device can be provided.

According to the second invention, the processing devices 1A and 1B are provided.
Is connected to a network and the function is switched by changing the software setting of the processing device 1B when the processing device 1A fails, so that monitoring and control by the processing device 1B is possible, the operation interruption time is short, and the reliability is high. It is possible to provide a high monitoring and control device.

According to the third and fourth aspects of the invention, since the power-on control device for sequentially turning on the power supplies of the plurality of sets of processing devices and display devices is provided, the inrush current value at power-on can be suppressed. As a result, it is possible to reduce the power supply capacity, and it is possible to provide an economically superior monitoring control device.

According to the fifth aspect of the invention, since the power supply of the processing device and the display device and the power supply of the power-on control device can be turned on individually, maintenance such as setting change of the power-on control device is performed. Can be carried out safely.

According to the sixth aspect of the present invention, the power-on control device is provided with a function capable of resetting the relay contacts inserted in the power lines of the processing device and the display device, so that it can be normally operated even after abnormal termination due to a power failure or the like. Can be launched.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a supervisory control device according to a first embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a supervisory control device according to a second embodiment of the present invention.

FIG. 3 is a block diagram showing a configuration of a supervisory control device according to a third embodiment of the present invention.

FIG. 4 is a block diagram showing a configuration of a supervisory control device according to Embodiment 4 of the present invention.

FIG. 5 is a block diagram showing a configuration of a supervisory control device according to a fifth embodiment of the present invention.

FIG. 6 is a block diagram showing a configuration of a conventional substation monitoring and controlling apparatus.

[Explanation of symbols]

1A, 1B processing device, 2A, 2B display device, 3A,
3B display signal line, 4, 4A, 4B supervisory control signal line,
5 LAN cable, 6, 6A, 6B transceiver,
7 communication lines, 8 power lines, 9 supervisory control device power-on switch, 10 display signal switcher, 11A to 11D key relay (coil and contact), 12 key relay drive signal line, 13 power-on control device, 14 processing device and Display power-on switch, 15 power-on relay reset signal line, 16 power-on relay reset switch.

Claims (6)

[Claims] 1. A supervisory control device for monitoring and controlling a control device in a control system, comprising two processing devices 1A,
1B and display devices 2A and 2B connected to each,
One of the processing devices 1A is connected to the control device via a network to execute monitoring and control of the control device, and the other processing device 1B uses the information via the communication line with the processing device 1A to control the control system. The monitoring control device is capable of monitoring the entire control device therein and switching the connection between the processing devices 1A, 1B and the display devices 2A, 2B. 2. A monitoring control device for monitoring and controlling control equipment in a control system, comprising two processing devices 1A,
1B and display devices 2A and 2B connected to each,
One processing device 1A is connected to the control device via a network to monitor and control the control device, and the other processing device 1B is connected to the control device via a network and communicates with the processing device 1A. Connected via a line, and normally monitors the entire control device in the control system according to the information via the communication line with the processing device 1A. A monitoring and control apparatus, which monitors and controls the control device according to information via a network between the two. 3. A monitoring control device for monitoring and controlling a control device in a control system, comprising: a plurality of processing devices connected to the control device in the control system to perform monitoring or control; and the processing device. And a power-on control device that sequentially turns on the power supplies of the processing device and the display device. 4. The power-on control device sequentially inputs drive signals to coils of a keep relay inserted in power lines of the processing device and the display device, and connects contacts of the keep relay in order. The monitoring control device according to claim 3, wherein the monitoring control device is operated. 5. The supervisory control device according to claim 3, wherein the power supply of the processing device and the display device and the power supply of the power-on control device can be turned on individually. 6. The power-on control device is provided with a function capable of resetting relay contacts inserted in power lines of the processing device and the display device, according to claim 4 or 5. Monitoring and control equipment.