JPH0612289A - Centralized supervisory and controlling system - Google Patents

Abstract

PURPOSE:To smoothly perform centralized supervisory at either supervisory and control station when any fault is generated at the other supervisory and control station by collecting supervisory information at both of stations even in the case of normal operations in the centralized supervisory and controlling system having two supervisory and control stations. CONSTITUTION:This system is composed of a supervisory and control station 1, plural stations 4-1-4-n to be supervised and controlled, and supervisory and control station 23 to receive supervisory and control information between both of sides of the station, to investigate the priority order of a control means from the own station to the stations 4-1-4-n to be supervised and controlled and the priority order of the control means at the supervisory and control station 1, and to output a control signal.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a supervisory control network, and more particularly to a centralized supervisory control system.

[0002]

2. Description of the Related Art An example of a conventional centralized supervisory control system will be described with reference to FIG. When considering backup of the supervisory control station in the conventional centralized supervisory control system, the system shown in FIG. 5 has been adopted. That is, normally, the supervisory control station 11 supervises and controls a plurality of monitored control stations 14-1, 14-2, ... 14-n, and when a fault occurs in the supervisory control station 11, switching is performed. The system is switched to the supervisory control station 12 by the device 13. Next, the operation will be described.
First, normally, a plurality of monitored control stations 14-1, 14-2, ...
-N information is collected, and a control command is sent as needed to control the monitored control stations 14-1 to 14-n. Next, when a failure occurs in the supervisory control station 11, the switching device 13 performs switching, and then the supervisory control station 12 performs the same operation.

[0003]

In this conventional centralized supervisory control system, the system configuration is simple, but the supervisory control station 12 does not have information before switching. That is, the monitor control station 12 normally does not collect the monitor information. Therefore, there is a problem that it is necessary to collect the monitoring information of all monitored control stations immediately after the switching because the history information in the past and the latest information at the time of switching are not available at the time of failure.

[0004]

SUMMARY OF THE INVENTION A centralized supervisory control system of the present invention comprises a first supervisory control station, a plurality of monitored control stations, and monitoring between the first supervisory control station and the plurality of monitored control stations. It is configured with a second supervisory control station that intercepts control information. Further, in the centralized supervisory control system according to another invention of the present invention, in the above-mentioned one, the second supervisory control station is provided with a control means for controlling a plurality of monitored control stations. Also,
In the centralized supervisory control system according to still another aspect of the present invention, in the second aspect of the present invention, the second supervisory control station includes a control means from the self station to a plurality of monitored stations and a first supervisory control station. The selection means is provided for checking the priority order with the control means and outputting a control signal.

[0005]

In the present invention, in the centralized supervisory control system having the first and second supervisory control stations, the supervisory information is collected at both stations even during normal operation, and the first supervisory control station smoothly operates in case of a failure. In addition, centralized monitoring should be performed at the supervisory control station.

[0006]

1 is a block diagram showing an embodiment of a centralized supervisory control system according to the present invention. In FIG. 1, 1 is a supervisory control station, 4-1, 4-2 ... 4-n is a monitored control station, and 2 is between the supervisory control station 1 and the monitored control stations 4-1 to 4-n. The monitoring control station 3 that intercepts the monitoring control information is a switching device that switches the monitoring control stations 1 and 2. The supervisory control station 2 includes control means for the monitored control stations 4-1 to 4-n,
Further, the supervisory control station 2 is provided with selection means for checking the priority of the control means from the self station to the plurality of monitored stations and the control means in the supervisory control station 1 and outputting a control signal.

FIG. 2, FIG. 3, and FIG. 4 are block diagrams showing an embodiment of the present invention, in which a portion related to the switching device 3 in FIG. 1 is extracted and shown. And these FIG. 2 to FIG.
Is a detailed description of the switching device 3, and the input / output signals of the monitored control stations 4-2 to 4-n are omitted. 2 to 4, the same reference numerals as those in FIG. 1 indicate corresponding parts, and reference numerals 21, 22 and 23 denote supervisory control stations, and the supervisory control stations 21 to 23 correspond to the supervisory control station 2 in FIG.
Reference numeral 31 is a monitoring information parallel output device, 32, 33 and 35 are control information parallel output devices, 34 and 37 are control information composition output devices, and 36 is a control information selection device. And 50,5
1, 52 indicates monitoring information, which are 60, 61, 62, 63,
Reference numeral 64 indicates control information, and 70 indicates a control selection command.

Next, the operation of the embodiment shown in FIGS. 2 to 4 will be described. First, the first invention will be described with reference to FIG. Monitored control station 4-1, 4-2 ... 4-
The monitoring information 50 from 6 to the monitoring control station 1 is also sent to the monitoring control station 21 by the monitoring information parallel output device 31. Further, the control information 60 from the supervisory control station 1 is sent to the monitored control stations 4-1, 4-2 ... 4-n and the supervisory control station 21 by the control information parallel output device 32. It should be noted that the monitoring control station 1 only has functions such as monitoring information request. When a failure occurs in the supervisory control station 1, the function of requesting the supervisory information or the like is changed to the supervisory control station 21, and the supervisory control station 21 can also send the control information 63.

Next, the second invention will be described with reference to FIG. Basically, a control information synthesis output device 34 is added to the configuration of the embodiment shown in FIG. That is, it is configured such that the monitoring control station 22 can send the monitoring information request and the control information 64 to the monitored control stations 4-1, 4-2 ... 4-n even during normal operation. Next, the third invention will be described with reference to FIG. Basically, a control information selection device 36 is added to the configuration of the embodiment shown in FIG. That is, in the embodiment shown in FIG. 3, since the monitoring information request and the control information 64 can be sent from the monitoring control station 1 and the monitoring control station 22, the monitoring control method may be confused. Therefore, in the embodiment shown in FIG. 4, the control information selecting device 36 determines which control of the supervisory control stations 1 and 23 is valid, so that the control information is monitored according to each control signal and time zone. It is configured to prioritize control stations.

[0010]

As described above, according to the present invention, in the centralized supervisory control system having two supervisory control stations, the supervisory control information is provided in parallel with the switching function between the first supervisory control station and the second supervisory control station. The output function, control information combining function, and control information selection function are added, and the monitoring information is collected by both monitoring control stations even during normal operation. Therefore, when the first monitoring control station becomes a failure, the There is an effect that the second supervisory control station can perform the centralized supervisory control, and the second supervisory control station can also perform the centralized supervisory control to some extent during the normal operation.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a centralized supervisory control system according to the present invention.

FIG. 2 is a block diagram showing an embodiment of the present invention.

FIG. 3 is a block diagram showing another embodiment of the present invention.

FIG. 4 is a block diagram showing another embodiment of the present invention.

FIG. 5 is a block diagram showing an example of a conventional centralized supervisory control method.

[Explanation of symbols]

 1, 2 monitoring control station 3 switching device 4-1 to 4-n monitored control station 21 to 23 monitoring control station 31 monitoring information parallel output device 32, 33 control information parallel output device 34 control information combining output device 35 control information parallel Output device 36 Control information selection device 37 Control information composition output device 50-52 Monitoring information 60-64 Control information 70 Control selection command

Claims (3)

[Claims] 1. A first supervisory control station, a plurality of monitored control stations, and a second supervisory control station that intercepts supervisory control information between the first supervisory control station and the plurality of monitored control stations. Centralized supervisory control method characterized by configuration. 2. The centralized supervisory control system according to claim 1, wherein the second supervisory control station comprises control means for controlling a plurality of monitored control stations. 3. The centralized supervisory control system according to claim 2, wherein the second supervisory control station comprises control means from its own station to a plurality of monitored control stations and control means in the first supervisory control station. A centralized supervisory control system characterized by comprising selection means for checking a priority and outputting a control signal.