JP5890752B2 - Plant monitoring and control system - Google Patents

Description

  The present invention relates to a plant monitoring control system that receives a monitoring signal from a detector in a plant building to monitor the plant, and operates a field device to control the plant.

  In a nuclear power plant, the control function for operating on-site equipment installed in the plant building and the monitoring function for grasping the state of the plant are mainly concentrated in the central control room. The entire plant is monitored and the on-site equipment is operated according to the situation.

  Here, in the situation where the supervisory control function of the central control room is lost in the nuclear power plant, or when the operator has to evacuate from the central control room due to environmental deterioration in the plant, the operator There is a need for a remote plant monitoring and control system having a monitoring and control function for safely stopping the plant from the outdoor part of the plant building. As such a remote plant monitoring and control system, a signal from a detector provided in the plant building is transmitted to a remote control system provided in a remote location outside the plant building, and the plant is monitored and controlled by the remote control device. Technology has been developed (for example, see Patent Documents 1 and 2).

JP 2003-345425 A Japanese Patent No. 3637331

  However, in the remote plant monitoring and control system described in the above-mentioned patent document, the signal route of the monitoring and control signals is not diversified. In particular, it is assumed that it is difficult to confirm whether all signal routes to the remote control device are sound under severe accidents.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a plant monitoring and control system that can provide a variety of signal routes in a remote monitoring and controlling apparatus, and can monitor and control the plant from the outside of the plant building with high reliability.

To achieve the above object, a plant monitoring and control system of the present invention is provided in the plant in the building, which receives the monitor signal from the detector via a central control room signal aggregation device, wherein the control signal via a signal concentrator for the central control room can send the field device, further said monitoring signal and the control signal and the central control room monitoring control device capable of transmitting and receiving in the central control room network, the plant in the building provided, the central control room network are connected via a communication path, and a remote network that is capable of sending and receiving the monitoring signal and said control signal and said central control room network, provided outside the plant building, and remote monitoring and control device connected to the remote network, provided in the plant in the building, from the detector Transmits the serial monitor signal to the remote monitoring and control device via the remote network, remote monitoring of the control signal from the remote monitoring and control device via the remote network can be transmitted to the field apparatus a control signal aggregation device, is provided in the plant in the building, monitor signal switch for switching the destination of the monitor signal from the detector between the central control room monitoring and control device and the remote monitoring control signal aggregator a device, provided in the plant in the building, and a control signal switching device for switching between the field and the control signal the central control room monitoring and control device and the remote monitoring control signal aggregator the source of the equipment the remote monitoring control system, the central control room signal concentrator and the central control room monitoring and control device and the central control room network arrangement The transmit channel, or the control signal via the remote network by switching one of the signal paths of the remote monitoring control signal aggregation device to the field devices, for receiving the monitoring signal from the detector It is characterized by that.

  According to the present invention, a variety of signal routes can be provided in the remote monitoring control device in the plant monitoring control system to increase reliability.

1 is a schematic configuration diagram of a plant monitoring control system according to a first embodiment of the present invention. The schematic block diagram which shows the control signal switching apparatus of the plant monitoring control system which concerns on the 1st Embodiment of this invention. The schematic block diagram which shows the monitoring signal switching apparatus of the plant monitoring control system which concerns on the 1st Embodiment of this invention. The schematic block diagram of the plant monitoring control system which concerns on the 2nd Embodiment of this invention.

  Embodiments of the present invention will be described below.

(First embodiment)
(Constitution)
Hereinafter, a plant monitoring control system according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 3. FIG. 1 is a schematic configuration diagram of a plant monitoring control system according to the first embodiment of the present invention. The plant monitoring control system 1 includes a central control room signal aggregation device 2, a central control room monitoring control device 3, a remote monitoring control signal aggregation device 4, a remote network 5, a remote monitoring control device 6, and an external device. The power source 8, the monitoring signal switching device 11, the control signal switching device 12, the central control room network 13, and the communication path 14 are configured. Of the configuration of the plant monitoring control system 1, the remote monitoring control device 6 and the external power supply 8 are provided outside the plant building 9. The nuclear power plant building 9 is a building that houses a nuclear reactor and a central control room.

  On-site equipment 7 and a detector 15 are provided in the plant building 9. The field device 7 is a device for operating and controlling a nuclear power plant such as a turbine, a valve, and a control rod. The field device 7 operates by receiving a control signal 101 from the central control room monitoring control device 3 or the remote monitoring control device 6 as described later. The field device 7 is connected to the control signal switching device 12. The control signal switching device 12 is connected so that the control signal 101 can be switched from the central control room signal aggregation device 2 or the remote monitoring control signal aggregation device 4 in a switchable manner.

  As the detector 15, various sensors that measure the temperature, radiation amount, hydrogen amount, and the like in the plant building 9, and measuring devices that measure the power amount, temperature, flow rate, and the like of the field device 7 can be applied. The detector 15 transmits the monitoring signal 102 measured as described later to the central control room monitoring control device 3 or the remote monitoring control device 6. The detector 15 is connected to the monitoring signal switching device 11. The monitoring signal switching device 11 is connected so that the monitoring signal 102 can be transmitted to the central control room signal aggregation device 2 or the remote monitoring control signal aggregation device 4 in a switchable manner.

  As shown in FIG. 2, the control signal switching device 12 determines that the transmission source of the control signal 101 is the central control room signal aggregating device 2 or the remote monitoring control signal according to the control signal switching command 103 transmitted from the remote monitoring control device 6. Switching to the aggregation device 4 is possible. As shown in FIG. 3, the monitoring signal switching device 11 sets the transmission destination of the monitoring signal 102 from the detector 15 to the central control room signal aggregating device 2 in accordance with the monitoring signal switching command 104 transmitted from the remote monitoring control device 6. It is possible to switch to the signal monitoring device 4 for remote monitoring control. It is assumed that the control signal 101 and the monitoring signal 102 can be switched for each detector 15 and each field device 15 or a plurality of devices collectively. Furthermore, it is possible to switch only the control signal 101 and only the monitoring signal 102.

  The central control room network 13 is installed in the nuclear power plant building 9 and is connected to the central control room monitoring control device 3 so as to be able to transmit and receive the control signals 101 and 102. The central control room monitoring control device 3 is connected to the central control room signal aggregating device 2 so that the control signal 101 and the monitoring signal 102 can be transmitted and received.

  The remote network 5 is installed in the nuclear power plant building 9. The remote network 5 is connected to the remote monitoring control device 6 and also connected to the central control room network 13 via the communication path 14. The remote network 5 and the central control room network 13 can transmit and receive the control signal 101 and the monitoring signal 102 through the communication path 14.

  The remote monitoring control device 6 is routed to access the detector 15 and the field equipment 7 through the central control room monitoring device 3 and the central control room signal aggregating device 2 via the remote network 5 and the central control room network 13. And the signal transmission / reception between the detector 15 and the field instrument 7 through the two signal routes of accessing the detector 15 and the field device 7 from the remote monitoring control signal aggregating apparatus 4 via the remote network 5. it can.

  The external power supply 8 is provided outside the nuclear power plant building 9. As shown by the broken line in FIG. 1, the external power source 8 includes a detector 15, a central control room signal aggregating device 2, a central control room monitoring control device 3, a remote monitoring control signal aggregating device 4, a remote network 5, a remote The monitoring control device 6, the field device 7, the monitoring signal switching device 11, the control signal switching device 12, and the central control room network 13 are connected so as to be able to supply power.

  With the above-described power supply line, signal route switching and signal transmission / reception between the remote plant monitoring and control system 6, the detector 15, and the field device 7 can be performed even when the on-site power supply in the nuclear power plant building 6 is lost.

  FIG. 2 is a schematic configuration diagram showing a control signal switching device of the plant monitoring control system according to the first embodiment of the present invention. As shown by a dotted line in FIG. 2, the remote monitoring control device 6 can transmit a control signal switching command 103 indicating a transmission source of the control signal 101 by an operator's manual operation. FIG. 2 shows a case where the central control room signal aggregating apparatus 2 is the transmission source of the control signal 101. The control signal switching command 103 is transmitted to the central control room signal aggregating apparatus 2 and the remote monitoring control signal aggregating apparatus 4 and designates the transmission source of the control signal 101. Further, the control signal switching command 103 is transmitted to either the central control room signal aggregation device 2 or the remote monitoring control signal aggregation device 4 or directly to the control signal switching unit 22 in the control signal switching device 12. The control signal switching unit 22 switches the control signal 101 so that either the central control room signal aggregation device 2 or the remote monitoring control signal aggregation device 4 is output to the field device 7 as a transmission source.

  FIG. 3 is a schematic configuration diagram illustrating a monitoring signal switching device of the plant monitoring control system according to the first embodiment of the present invention. As shown by a dotted line in FIG. 3, the remote monitoring control device 6 can transmit a monitoring signal switching command 104 indicating a transmission destination of the monitoring signal 102 by an operator's manual operation. FIG. 3 shows a case where the central control room signal aggregation device 2 is the transmission source of the monitoring signal 102. The monitoring signal switching command 104 is transmitted to the central control room signal aggregating apparatus 2 and the remote monitoring control signal aggregating apparatus 4 and designates the transmission destination of the monitoring signal 102. Furthermore, the monitoring signal switching command 104 is transmitted to the monitoring signal switching unit 21 in the monitoring signal switching device 11 either directly through the central control room signal aggregation device 2 or the remote monitoring control signal aggregation device 4, The monitoring signal switching unit 21 switches the monitoring signal 102 so that either the central control room signal aggregation device 2 or the remote monitoring control signal aggregation device 4 is output as a transmission destination. Note that the transmission of the control signal switching command 103 and the monitoring signal switching command 104 in the remote monitoring control device 6 is not only transmitted by a manual operation of an operator, but may be configured to receive and transmit a wireless transmission command. it can.

(Function)
The operation of the first embodiment of the present invention will be described below. First, the operation during normal plant operation will be described. During normal plant operation, the plant monitoring control system 1 switches the signal transmission destination of the monitoring signal switching device 11 and the signal receiving source of the control signal switching device 12 to the central control room signal aggregation device 2. The central control room monitoring control device 3 transmits the control signal 101 to the field equipment 15 via the central control room signal aggregating device 2 for operation. Here, a part of the control signal 101 is input to the central control room monitoring control device 3 from another control device (not shown) connected to the central control room network 13 via the central control room network 13. It can also be transmitted to the field device 15 via the control room monitoring control device 3.

  Further, the monitoring signal 102 from the detector 15 is transmitted to the central control room monitoring control device 3 via the central control room signal aggregating device 2 for monitoring. Here, a part of the monitoring signal 102 is further transmitted from the central control room monitoring control device 3 to the central control room network 13 for monitoring the entire plant and grasping the state, and is transmitted to other control devices (not shown). can do.

  Next, the operation in a plant emergency will be described. A plant emergency is a situation in which the supervisory control function of the central control room is lost in a nuclear power plant, or an operator must evacuate from the central control room due to environmental deterioration in the plant.

  In the event of a plant emergency, the remote control monitoring control device 6 sends the control signal 101 and the monitoring signal 102 when one of the central control room signal aggregating device 2, the central control room monitoring control device 3, and the central control room network 13 is out of order. If transmission / reception cannot be performed via the communication path 14, the signal transmission destination of the monitoring signal switching device 11 and the signal receiving source of the control signal switching device 12 are routed to the remote monitoring control signal aggregating device 4 as a signal route via the remote network 5. The signal is transmitted to and received from the detector 15 and the field device 7.

  On the other hand, when the remote control monitoring control device 6 cannot transmit / receive the control signal 101 and the monitoring signal 102 via the monitoring control signal aggregation device 4 due to a failure of the remote monitoring control signal aggregation device 4 or the like, the monitoring signal The signal transmission destination of the switching device 11 and the signal receiving source of the control signal switching device 12 are switched to the central control room monitoring control device 2, and the central control room signal aggregation device 2, the central control room monitoring control device 3, and the central control room network 13 and the communication path 14 as signal routes, signal transmission / reception with the detector 15 and the field device 7 is performed via the remote network 5.

(effect)
According to the first embodiment of the present invention, the remote monitoring and control device 6 includes the central control room signal aggregation device 2 and the central control room monitoring and control device 3 and the central control room network 13 and the communication path 14 or the remote monitoring control. The control signal 101 and the monitoring signal 102 can be transmitted / received via the remote network 5 by switching one of the signal routes of the signal aggregation device 4 and the remote monitoring and control device 6 can have various signal routes. It is possible to monitor and control the plant from outside the nuclear power plant building 9.

  The control signal 101 and the monitoring signal 102 not only switch the signal route from the remote monitoring control device 6 by an operator's manual operation, but also the remote monitoring control device 6 does not establish a connection with the detector 15 and the field device 7. In this case, the control signal switching command 103 and the monitoring signal switching command 104 can be automatically transmitted to switch to the other signal route.

  Furthermore, connection information between the remote monitoring control device 6, the detector 15, and the field device 7 can be displayed in a list on a display monitor or the like. In this case, the signal route can be switched by manually transmitting the control signal switching command 103 and the monitoring signal switching command 104 based on the operator's judgment based on the list display.

  In addition, the central control room monitoring control device 3 monitors the abnormal state of the plant and the standby state of the remote monitoring control device 6, and the operator automatically monitors the abnormal state that should be monitored and controlled by the remote monitoring control device 6. May be detected automatically, and the transfer of priority between the central control room monitoring control device 3 and the remote monitoring control device 6 may be automatically performed.

(Second Embodiment)
(Constitution)
Hereinafter, a plant monitoring control system according to a second embodiment of the present invention will be described with reference to FIG. The same parts as those of the plant monitoring control system according to the first embodiment are denoted by the same reference numerals, and the description of the same configuration is omitted.

  FIG. 4 is a schematic configuration diagram of a plant monitoring control system according to the second embodiment of the present invention. The second embodiment is different from the first embodiment in that wireless communication transceivers 31a, 31b, and 31c are newly provided. The wireless communication transceivers 31a, 31b, and 31c are connected to the remote monitoring control device 6, the central control room network 13, and the remote monitoring control signal aggregation device 4 so as to be able to transmit and receive the control signal 101 and the monitoring signal 102, respectively.

(Function)
The operation of the second embodiment of the present invention will be described. In a plant emergency, the remote monitoring and control device 6 transmits and receives signals via the remote network 5, but it is assumed that an abnormality occurs in the remote network 5. In this state, the remote monitoring control device 6 transmits / receives the control signal 101 and the monitoring signal 102 to / from the wireless communication transceivers 31b and 31c by the wireless communication transmitter / receiver 31a, and the signal route between the detector 15 and the field device 7 by wireless communication. Can be established. Also, the control signal switching command 103 and the monitoring signal switching command 104 may be transmitted to the monitoring signal switching device 11 and the control signal switching device 12 by wireless communication and switched.

(effect)
According to the second embodiment of the present invention, the control signal 101 and the monitoring signal 102 can be transmitted and received by the wireless communication transceivers 31a, 31b, and 31c even when the remote network 5 is abnormal. Plant monitoring and control can be performed.

DESCRIPTION OF SYMBOLS 1 ... Plant monitoring control system 2 ... Central control room signal aggregation device 3 ... Central control room monitoring control device 4 ... Remote monitoring control signal aggregation device 5 ... Remote network 6 ... Remote monitoring and control device 7 ... field equipment 8 ... external power supply 9 ... nuclear power plant building 11 ... monitoring signal switching device 12 ... control signal switching device 13 ... central control room network 14 ... Communication path 15 ... Detector 21 ... Monitoring signal switching unit 22 ... Control signal switching units 31a, 31b, 31c ... Radio communication transceiver 101 ... Control signal 102 ... Monitoring Signal 103 ... Control signal switching command 104 ... Monitoring signal switching command

Claims (5)

It is installed in the plant building and can receive monitoring signals from detectors via the central control room signal aggregating device and transmit control signals to the field equipment via the central control room signal aggregating device. Further, a central control room monitoring and control device capable of transmitting and receiving the monitoring signal and the control signal to a central control room network;
A remote network provided in the plant building, connected to the central control room network via a communication path, and capable of transmitting and receiving the monitoring signal and the control signal with the central control room network;
A remote monitoring and control device provided outside the plant building and connected to the remote network;
The monitoring signal is provided in the plant building and transmits the monitoring signal from the detector to the remote monitoring control device via the remote network, and the control from the remote monitoring control device via the remote network. A signal aggregation device for remote monitoring and control capable of transmitting a signal to the field device;
A monitoring signal switching device provided in the plant building, for switching a transmission destination of the monitoring signal from the detector between the central control room signal aggregation device and the remote monitoring control signal aggregation device;
Provided in the plant building, comprising a control signal switching device for switching the source of the control signal to the field equipment between the central control room signal aggregation device and the remote monitoring control signal aggregation device,
The remote monitoring and control device includes a signal path of the central control room signal aggregation device, the central control room monitoring and control device, the central control room network, the communication path, or the remote monitoring and control signal aggregation device. A plant monitoring control system, wherein the control signal is switched and transmitted to the field device via the remote network, and the monitoring signal is received from the detector.   It is provided outside the plant building and further comprises at least the remote network, the signal monitoring device for remote monitoring control, the detector, and an external power source capable of supplying power to the field equipment, The plant monitoring control system according to claim 1.   The central control room network, the remote monitoring control signal aggregating device and the remote monitoring control device are connected to each other, between the remote monitoring control device and the central control room network, and between the remote monitoring control device and the remote monitoring. The monitoring control system according to claim 1, further comprising a wireless communication transceiver capable of transmitting and receiving the control signal and the monitoring signal to and from a control signal aggregating apparatus. 4. The connection information of the control signal and the monitoring signal is transmitted to the remote monitoring control device, and the connection information is displayed in a list on the remote monitoring control device. 5. The plant monitoring and control system described in 1. The operator detects an abnormal state of a plant to be monitored from a remote monitoring control device, and switches the priority of monitoring control from the central control room monitoring control device to the remote monitoring control device. The plant monitoring control system according to any one of claims 1 to 4 .

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