JPH1051980A - Monitoring control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a monitoring control system which can prevent receiving a signal from an apparatus different in operation mode. SOLUTION: An operation mode imparting means 7 and an operation mode judging means 8 are installed in each monitoring controller 1, signal transmission equipment 3 and input output equipment 6. When a control signal or a state signal is transmitted, the operation mode imparting means 7 imparts the operation mode to the signal which mode is set to the means 7 itself and transmits the control signal or the state signal. When a control signal or a state signal is received, the operating mode judging means 8 judges whether the operation mode imparted to the control signal or the state signal coincides with the operation mode which is set to the means 8 itself, and takes in the control signal or the state signal when coincidence is confirmed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a supervisory control system for centrally monitoring and controlling monitored equipment such as substation equipment, power generation equipment or power transmission equipment installed in a substation or a power station constituting a power system. About.

[0002]

2. Description of the Related Art In general, a centralized monitoring and control device of a substation is implemented by a monitoring and control system having a control computer as a core. FIG. 6 is a configuration diagram showing such a monitoring control system.

The supervisory control device 1 is composed of a control computer, and has a dual configuration of a supervisory control device 1A for the A system and a supervisory control device 1B for the B system. The supervisory control devices 1 </ b> A and 1 </ b> B having the duplex configuration are connected to the signal bus 2. The signal bus 2 is connected with signal transmission devices 3A and 3B having a duplex configuration, and is connected via signal transmission lines 4A and 4B to input / output devices 5A and 5B also having a duplex configuration. .

That is, two input / output devices 5A and 5B having a duplex configuration are connected to each of the plurality of monitored control devices 6, and the A-system input / output device 5A is connected to the A-system signal. B is connected to the transmission device 3A via the A-system signal transmission path 4A,
The system input / output device 5B is connected to the system B signal transmission device 3B via the system B signal transmission path 4B.

The states of the monitored and controlled devices 6a to 6n are taken as state signals by the input / output devices 5A1, 5B1 to 5An and 5Bn of both the A system and the B system. The signal is transmitted to the signal transmission device 3A installed far away via 4An, and similarly transmitted to the signal transmission device 3B installed far away via the signal transmission lines 4B1 to 4Bn for the B system. Signal transmission device 3
The status signals taken in A and 3B are sent to the monitoring and control devices 1A and 1B via the signal bus 2, where predetermined arithmetic processing is performed and provided to the operator.

A control signal for the monitored and controlled device 6 is output from the monitoring and controlling devices 1A and 1B,
And is taken into the signal transmission devices 3A and 3B via. Then, the input / output device 5 is transmitted via the signal transmission paths 41A and 41B.
Transmit to A1 and 5B1. As a result, the monitored control device 6
, Control signals are output from the input / output devices 5A1 and 5B1 to perform control.

As described above, the monitoring control devices 1A and 1B receive the status signal from the monitored control device 6, monitor the status signal, and output the control signal to the monitored control device 6.
That is, the monitoring control devices 1A and 1B have the following functions. The status signal is transmitted to the signal transmission device 3 via the signal bus 2.
, The function of providing the operator with the status of the monitored control device 6, the function of a man-machine interface for the operator to control the monitored control device 6, the function of transmitting control signals to the signal bus, etc. have.

[0008] The signal transmission devices 3A and 3B have the following functions. A control signal from the signal bus 2 is received, the corresponding input / output device 5A, 5B is specified according to the transmission protocol, and the signal transmission path 4 for the input / output device 5A, 5B is specified.
A, 4B, and a function of receiving status signals from the input / output devices 5A, 5B in accordance with a transmission protocol and transmitting the signals to the monitoring control devices 1A, 1B. The input / output devices 5A and 5B have the following functions. Signal transmission path 4
A, a function of receiving a control signal from the monitored control device 6 according to a transmission protocol, transmitting a control signal to the monitored control device 6, taking in a status signal from the monitored control device 6, and transmitting the status signal to the signal transmission lines 4A, 4B according to the transmission protocol. Has functions.

Here, in such a supervisory control system, the supervisory control device 1, the signal transmission device 3, the input / output device 5
Since two devices (A, B) equivalent to each other are installed, a predetermined operation mode is set and operated in each of these devices having the dual system configuration. For example, operation modes such as a normal mode for performing normal monitoring and control, a standby mode for backing up when a system in the normal mode fails, and a test mode for testing the own system are set. The setting of these operation modes can be arbitrarily set by the operator.

[0010] The status signal or the control signal is exchanged only between the monitoring control device 1, the signal transmission device 3 and the input / output device 5 which are set to the same operation mode. For this reason, when the own device transmits and receives a signal, the transmission of the signal is started after always confirming the operation mode of the partner device.

For example, a supervisory control device 1 having a double configuration
A, 1B, signal transmission devices 3A, 3B, input / output device 5A,
When the system A of 5B is operated in the normal mode and the system B is operated in the standby mode or the test mode, the supervisory control device 1A in the normal mode attempts to transmit a control signal to the signal transmission device 3A. When the operation is to be performed, the transmission of the control signal is started after confirming that the operation mode of the signal transmission device 3A is the same normal mode as that of the monitoring control device 1A.

If the operation modes do not coincide with each other in the operation mode confirmation, the monitoring and control apparatus 1A which is the transmission source apparatus.
Does not transmit a control signal to the signal transmission device 3A. This is because the setting of the operation mode for each device can be arbitrarily set by the operator, so that the operation mode may be changed. In this way, control signals and state signals are not transmitted to devices having different operation modes.

[0013]

However, if the operator changes the operation mode of the signal transmission device 3A immediately after the monitoring control device 1A, which is the transmission source device, confirms the operation mode, the monitoring control device Although the operation modes of the signal transmission device 1A and the signal transmission device 3A are different, a control signal is transmitted to the signal transmission device 3A.
As a result, transmission of an inappropriate signal is performed.

Further, for example, if the control signal output from the monitoring control device 1B set in the test mode is received by the signal transmission device 3B set in the normal mode due to some incompatibility, the control signal is used for the purpose of the test. Cannot be determined by the signal transmission device 3B, the control signal is erroneously transmitted from the signal transmission device 3B to the monitored control device 6.

An object of the present invention is to provide a monitoring control system capable of preventing reception of signals from devices having different operation modes.

[0016]

According to a first aspect of the present invention, there is provided a monitoring control device for monitoring and controlling a plurality of monitored control devices, and a control signal from the monitoring control device being monitored via an input / output device. A signal transmission device that transmits to the control device and transmits a status signal from the monitored control device to the monitoring and control device via the input / output device, the monitoring and control device, the signal transmission device,
A supervisory control system in which at least a supervisory control device of the input / output devices is duplicated and a prescribed operation mode is set and operated in the supervisory control device, the signal transmission device, and the input / output device. When transmitting a control signal or a status signal to each of the transmission device and the input / output device, an operation mode adding means for transmitting a control signal or a status signal by adding an operation mode set for itself, and a control signal or a status signal When receiving the control signal or the state signal, when the operation mode added to the received control signal or the state signal coincides with the operation mode set for the self, the operation mode determination means for taking in the control signal or the state signal is provided. Things.

According to the first aspect of the present invention, when transmitting the control signal or the state signal, the operation mode adding means transmits the control signal or the state signal by adding the operation mode set for itself, and determines the operation mode. The means, when receiving the control signal or the status signal, determines whether the operation mode added to the received control signal or the status signal matches the operation mode set for itself, and Captures its control or status signal when

According to a second aspect of the present invention, in the first aspect of the present invention, two input / output devices are provided for each of the plurality of monitored control devices, and the signal transmission device is provided in a duplex configuration. Each of the duplicated signal transmission devices is connected to each of the duplicated input / output devices.

According to the second aspect of the invention, in each of the duplexed devices, when transmitting a control signal or a status signal, the operation mode of the own device is added to the control signal or the status signal by the operation mode adding means. , When receiving a control signal or a status signal, its own operation mode determination means compares the operation mode added to the control signal or the status signal with the operation mode of its own device, and if the signals match, the signal is determined. take in.

According to a third aspect of the present invention, in the first aspect of the present invention, one input / output device is provided for each of the plurality of monitored and controlled devices, and each of the input / output devices has a single signal transmission device. It is intended to be connected to.

According to the third aspect of the present invention, when a control signal or a status signal is transmitted in each of the dual supervisory control device, the single input / output device, and the signal transmission device, the operation mode addition means is provided. When the operation mode of the own device is added to the control signal or the status signal and the control signal or the status signal is received, the operation mode added to the control signal or the status signal by the own operation mode determination means and the operation of the own device. The mode is compared, and if they match, the signal is captured.

According to a fourth aspect of the present invention, in the first aspect of the present invention, one input / output device is provided for each of the plurality of monitored control devices, and each input / output device is provided with a signal of a duplex configuration. It is designed to be connected to a transmission device.

According to the fourth aspect of the present invention, when a control signal or a state signal is transmitted in each of the dual supervisory control device, the signal transmission device, and the single input / output device, the operation mode adding means uses the self mode. When the operation mode of the device is added to the control signal or the status signal, and the control signal or the status signal is received, the operation mode added to the control signal or the status signal by the own operation mode determination means and the operation mode of the own device. Are compared, and if they match, the signal is captured.

[0024]

Embodiments of the present invention will be described below. FIG. 1 is a configuration diagram showing a first embodiment of the present invention. The first embodiment is different from the conventional example shown in FIG. 6 in that an operation mode adding unit 7 and an operation mode determination unit 8 are provided in each of the monitoring control device 1, the signal transmission device 3, and the input / output device 5. It is a thing.

When the own device transmits a control signal or a status signal, the operating mode adding means 7 adds a driving mode set to the own device and transmits a control signal or a status signal. The operation mode determination means 8
When receiving a control signal or status signal to its own device,
Determines whether the operation mode added to the received control signal or status signal matches the operation mode set in the own device, and takes in the control signal or status signal when they match. is there.

In the first embodiment, a LAN is used as the signal bus 2. That is, an Ethernet LAN or the like is used as a transmission protocol. The signal transmission path 4 uses a transmission protocol such as the HDLC method.
This is to realize high-speed transmission because the number of monitored control devices 6 is large and the number of input / output devices 5 is large. Therefore, a LAN-IF (local area network interface) is applied as the signal transmission device 3 so that information from a large number of input / output devices 5 can be collectively transmitted to the monitoring control device 1 and the transmission protocol is converted. To do.

The monitoring control devices 1A and 1B, the signal transmission devices 3A and 3B, and the input / output devices 5A and 5B are
And for the signal transmission devices 3A and 3B,
Two sets of signal transmission devices 3A1, 3B1 and signal transmission devices 3A2, 3B2 according to the number of monitored control devices 6.
Is installed.

In such a supervisory control system, normally, the supervisory control device 1A of the A system is set to the normal mode,
The monitoring and control device 1B of the B system is operated in the standby mode. Therefore, the A-system signal transmission devices 3A1, 3A2 and the A-system input / output devices 5A1 to 5Ai, 5Aj to 5An
Are set to the normal mode, while the B-system signal transmission devices 3B1, 3B2 and the B-system input / output devices 5B1-5
Bi, 5Bj to 5Bn are set to the normal mode.

In this state, a description will be given of a case where a control signal transmission test is performed on the monitored control device 6a. First, the operator changes the operation mode of the monitoring control device 1B, the signal transmission device 3B1, and the input / output device 5B1 from the standby mode to the test mode. Further, the monitored and controlled device 6a to be tested is disconnected from the input / output device 5A1 in the normal mode, and only the input / output device 5B1 in the test mode is connected.

In this case, the monitoring control device 1A and the signal transmission device 3 other than the monitored control device 6a are set to the normal mode.
A1, 3A2 and input / output devices 5A2 to 5Ai, 5Aj
Normal monitoring control is performed by using 〜5An.

As a test for the monitored control device 6a,
Generally, a transmission / reception test of a control signal and a status signal is performed. The control signal is, as shown in FIG.
, The control information 10 indicating the control content, and the operation mode information 11 indicating the operation mode of the transmission source device. Similarly, for the status signal, as shown in FIG. 3, a device address 9 for specifying the monitored control device 6, status information 12 indicating the status of the monitored control device 6, and And operation mode information 11.

Monitoring and control device 1B set to test mode
The operation mode information of the test mode is added by the operation mode adding means 7 of the monitoring and control device 1B to the control signal output from the controller 1B, and is output to the signal bus 2. At this time, each of the signal transmission devices 3 determines the operation mode information added to the control signal by the operation mode determination means 7, and sets the signal set to the operation mode corresponding to the operation mode shown here. Only the transmission device will capture this control signal.
Here, the signal transmission device 3 set to the test mode
Only B1 takes in this control signal.

Thereafter, this control signal is transmitted to the signal transmission device 3B.
1 to the input / output device 5B1.
In B1, before taking in the control signal, the operation mode determination means 8 confirms the operation mode. In this case, since the input / output device 5B1 is also set to the test mode, the input / output device 5B1 takes in the control signal and sends a test control signal to the monitored control device 6a.

At this time, even if the signal transmission device 5B1 erroneously sends this control signal to an input / output device other than the input / output device 5B1, the other input / output devices are set to operation modes other than the test mode. The control signal is not taken in by the determination by each operation mode determining means 8. In this way, the control signal issued as a test is reliably transferred only between devices set in the test mode.

Similarly, the status signal from the monitored and controlled device 6a is input to the input / output device 5B1 set to the test mode, and the operation mode adding means 7 of the input / output device 5B1 changes the status signal to the test mode. The indicated operation mode information is added. Then, the signal is transferred to the signal transmission device 3B1 set in the test mode via the signal transmission line 4B1. After that, the signal transmission device 3B1 sends a status signal to the signal bus 2, and the status signal is also taken in by the monitoring control device 1B set to the test mode. In this way, the status signal or the control signal is passed only to a device set to the same operation mode as the operation mode information added to the signal.

Immediately after the control signal for testing is transmitted from the monitoring control device 1B, the operator operates the signal transmission device 5B1.
When the operation mode is changed to the operation mode other than the test, the signal transmission device 5B1 does not receive the control signal because the operation mode of the signal transmission device 5B1 does not match the operation mode information added to the control signal. . In this way, the transfer of an inappropriate signal is prevented.

As described above, according to the first embodiment, when the control signal or the status signal is received, the operation mode added to the control signal or the status signal and the operation mode set in the own device are set. Since the mode and the mode are compared and a signal is received only when they match, it is possible to prevent receiving an inappropriate signal having a different operation mode.

Next, a second embodiment of the present invention will be described. FIG. 4 is a block diagram showing a second embodiment of the present invention. The second embodiment is different from the first embodiment shown in FIG. 1 in that the signal transmission device 3, the signal transmission path 4, and the input / output device 5 have a single configuration.
Also in the second embodiment, the operation modes are set for the signal transmission device 3 and the input / output device 5, respectively.

In FIG. 4, while the normal operation is performed on the monitored control devices 6a to 6i using the monitoring control device 1A, the monitored control devices 6j to 6n are controlled using the monitoring control device 1B. The case in which the test is performed will be described.

First, the operation modes of the input / output devices 5a to 5i, the signal transmission device 3a, and the monitoring and control device 1A connected to the monitored and controlled devices 6a to 6i are set to the normal mode.
Input / output device 5j connected to monitored control devices 6j to 6n
5n, the operation mode of the signal transmission device 3b, and the monitoring control device 1B are set to the test mode.

In this state, the operation signal indicating the normal mode is added to the control signal output from the monitoring control device 1A by the operation mode adding means 7 of the monitoring control device 1A. On the other hand, operation mode information indicating a test is added to the control signal output from the monitoring control device 1B by the operation mode adding means 7 of the monitoring control device 1B. As a result, the control signals of the normal mode and the test mode flow through the signal bus 2. However, since the signal transmission device 3a is set to the normal mode, the normal mode is determined by the operation mode determining means 8. Only the mode control signal is captured. Further, since the signal transmission device 3b is set to the test mode, only the control signal of the test mode is taken in by the determination of the operation mode determination means 8.

As described above, each of the signal transmission devices 3a, 3
b compares the operation mode of its own device with the operation mode information added to the control signal, takes in the signal only when it matches, and sends the control signal to the input / output device 5 as the next device. Transmit. Therefore, even if the operator changes the operation mode of the signal transmission device 3 immediately after outputting the control signal from the monitoring control device 1, it is added to the control signal when the signal transmission device 3 takes in the control signal from the signal bus 2. Since the operation mode information and the own operation mode are compared, it is possible to prevent a control signal that does not match the operation mode from being sent to the input / output device 5 by mistake.

Next, a third embodiment of the present invention will be described. FIG. 5 is a block diagram showing a third embodiment of the present invention. The third embodiment shows a centralized supervisory control system to which the supervisory control system of the present invention is applied in order to centrally monitor and control equipment of a power station or a substation which is an unmanned controlled station from a control station. is there. in this case,
The signal transmission device 3 is composed of a tele-converter, and the input / output device 5 is composed of a tele-converter.

That is, in order to monitor and control the monitored and controlled equipment 6a to 6i installed in each controlled station from a remote control station, each controlled station is provided with an input / output device 5 to monitor the controlled station. A control device (telecon) is installed, and a supervisory control device 1 and a teleconverter coupling device, which is a signal transmission device 3, are installed at the control station. The telecon coupling device and the telecon are connected by a dedicated signal transmission line 4. In the third embodiment, the teleconverter (input / output device 5) installed in the controlled place (monitored control device 6) has a single configuration, and the monitoring control device 1 and the signal transmission device 3 are duplicated. Configuration
Two sets of signal transmission devices 3 are provided.

Now, the monitoring control device 1A and the signal transmission device 3A1 are set to the normal mode,
B, the signal transmission device 3B1 and the input / output device 5a are set to the test mode.

At this time, operation mode information indicating a test is added to the control signal output from the signal transmission device 3B1 to the input / output device 5a by the operation mode addition means 7 of the signal transmission device 3B1. Since the input / output device 5a is set to the test mode, the control signal from the signal transmission device 3B1 can be taken in by the determination of the operation mode determination means 8.

Here, since the signal transmission device 3A1 is coupled to the input / output device 5a via the signal transmission line 4A1, a case where the signal transmission device 3A1 erroneously sends a control signal to the input / output device 5a is also considered. Can be However, in this case, since the signal transmission device 3A1 is set to the normal mode,
The operation signal indicating the normal mode is added to the control signal output from the signal transmission device 3A1 by the operation mode adding means 7. Then, the operation mode determination means 8 of the input / output device 5a collates the operation mode information of the control signal output from the signal transmission device 3A1, and as a result,
Since it does not match the test mode, which is the operation mode of the own device, the control signal from the signal transmission device 3A1 is not taken in. In this way, since each device including the input / output device 5 does not take in the control signal or the status signal whose operation mode does not match, it is possible to prevent erroneous signal transmission / reception processing.

[0048]

As described above, according to the present invention, an operation mode is set for each device constituting the monitoring and control system, and when a signal is output, the operation mode is added and transmitted. Is received, the operation mode set in the own device is compared with the operation mode added to the signal, and when the operation mode matches, the signal is taken in, so that an inappropriate signal is not taken in.

Therefore, a test mode can be set for a device to be tested, and the test can be safely performed even during normal operation. As a result, a highly reliable monitoring control system can be obtained.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a first embodiment of the present invention.

FIG. 2 is an explanatory diagram of a control signal according to the first embodiment of the present invention.

FIG. 3 is an explanatory diagram of a state signal according to the first embodiment of the present invention.

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

FIG. 5 is a block diagram showing a third embodiment of the present invention.

FIG. 6 is a block diagram showing a conventional example.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 monitoring control device 2 signal bus 3 signal transmission device 4 signal transmission line 5 input / output device 6 monitored control device 7 operation mode addition means 8 operation mode determination means 9 device address 10 control information 11 operation mode information 12 state information

Claims (4)

[Claims] A monitoring control device for monitoring and controlling a plurality of monitored control devices; a control signal from the monitoring control device being transmitted to the monitored control devices via an input / output device; A signal transmission device for transmitting a status signal from a control device to the monitoring control device via the input / output device, wherein at least the monitoring control device of the monitoring control device, the signal transmission device, and the input / output device In a monitoring control system in which a predetermined operation mode is set and operated in the monitoring control device, the signal transmission device, and the input / output device, the monitoring control device, the signal transmission device, and the input / output device When transmitting the control signal or the state signal to each of the above, an operation mode set to add a self-set operation mode to transmit the control signal or the state signal Means, when receiving the control signal or the state signal, when the operation mode added to the received control signal or the state signal and the operation mode set to the self match the control signal or A monitoring control system, comprising: an operation mode determining unit that captures a state signal. 2. The system according to claim 1, wherein each of the plurality of monitored control devices is provided with two of the input / output devices, and each of the signal transmission devices is provided with a duplicated signal. 2. The supervisory control system according to claim 1, wherein each of said duplexed input / output devices is connected to a transmission device. 3. An input / output device is provided for each of the plurality of monitored control devices, and each of the input / output devices is connected to the signal transmission device having a single configuration. Characteristic monitoring and control system. 4. An input / output device is provided for each of the plurality of monitored control devices, and each of the input / output devices is connected to the signal transmission device having a duplex configuration. A supervisory control system characterized by the above.