JP5072699B2 - Control switching method with control panel update - Google Patents

Description

  The present invention relates to at least one device that outputs a plurality of current signals and / or voltage signals, an ammeter for measuring the output current signals, and / or a voltmeter for measuring the output voltage signals. An existing control board in an equipment control system, comprising: a control board for controlling the operation of the equipment provided with a monitoring control device for monitoring and controlling the operation of the control board based on a signal from the control board The present invention relates to a control switching method for switching from device control via an existing control panel by a monitoring control device to device control via a new control panel as a result of updating from to a new control panel.

  2. Description of the Related Art A device control system configured such that operations of a large number of electric (electronic) devices are controlled by a control panel and the operations of the control panel are further monitored and controlled by a monitoring control device is widely known. A measuring circuit configured to measure the current value of the current signal output from any of the devices and / or the voltage value of the voltage signal by the ammeter and / or voltmeter of the control panel. The control panel transmits a current value, a voltage value of each measurement circuit, or a signal related to these values to the monitoring control device, and the operation of the device is performed based on the signal received by the monitoring control device. There are also many systems configured to transmit a control signal for controlling to the control panel and control the operation of the device based on the control signal received by the control panel. For example, in the equipment control system in the power generation / substation, there are many switches, transformers, current transformers, circuit breakers, current signals from current transformers and voltage signals from transformers. Was transmitted to the control panel (distribution panel), and the current value, voltage value or signals related to these values measured by the ammeter and voltmeter of the control panel were installed in the remote control station or substation. A system configured to control operations of various devices via a control panel based on a signal transmitted to the monitoring control device and transmitted by the monitoring control device is included.

  The monitoring control device in the device control system described above generally stores a central processing unit, an input / output unit for sending and receiving monitoring control signals to and from the control panel, and a control data table necessary for control of the control panel. A data storage unit and the like are included, and various control panels can be controlled using a control data table corresponding to the type of the control panel. If the existing control panel needs to be renewed due to the aging of the existing control panel or the emergence of a highly functional control panel, the operation of the equipment control system is temporarily stopped. Then, remove all the current signal and / or voltage signal transmission wiring between the existing control panel and the equipment, and then update the wiring to install a new signal transmission wiring between the new control panel and the equipment. After that, the equipment was controlled by the supervisory control device via the new control panel. 7, the monitoring control device 2, the existing control panel 3 that is monitored and controlled by the monitoring control device 2, the device 4 that outputs a current signal controlled by the existing control panel 3, and between the existing control panel 3 and the device 4. 1 shows an example of a conventional control panel update procedure in the device control system 1 including the current signal transmission wiring 5 and the communication means 6 between the monitoring control device 2 and the existing control panel 3. After removing the current signal transmission wiring 5 between the control panel 3 and the device 4, the wiring update work for providing a new current signal transmission wiring 5 'between the newly installed control panel 3' and the device 4 is performed. After completing the wiring update work, the control data table of the supervisory controller was switched from the existing control panel to the new control panel.

  However, when the number of wirings 5 and 5 'is large, that is, when a large number of current value measurement circuits are included, such wiring update work takes a long time. For example, in the case of the above-mentioned power generation / substation, even if 100 wiring update operations are performed 10 times a day, 10 days are required for the update operation from the existing control panel 3 to the new control panel 3 ′. End up. Therefore, a plurality of control data tables capable of controlling a part of the existing control panel 3 and a part of the new control panel 3 ′ are stored in advance in the data storage unit of the supervisory control device 2, and an appropriate number of switches, etc. After the operation of the equipment is stopped and the corresponding wiring is updated, switching to a new control data table is performed, and both control panels 3, 3 'are operated and stopped under the new control data table. Control the operation of the remaining devices and the rest of the devices, and then stop the operation of another appropriate number of devices, update the corresponding wiring, and switch to another control data table. The operation of the device control system 1 was continued by repeating the operation of operating both control panels 3 and 3 'under the control data table to control the operation of the devices that were stopped and the remaining devices. . Therefore, for example, when 100 wiring update operations are performed 10 times a day as described above, 10 different control data tables are stored in the data storage unit of the monitoring control device 2 and the wiring is updated. The change process and the data switching process must be repeated 10 times, and each time the control data table is switched, a trial operation of the entire device control system 1 under new conditions is also required. In addition to the cost of trial operation of the entire device control system 1, labor costs associated with these operations were also required.

  Regarding a method for updating an existing control panel for controlling an apparatus to a new control panel, Japanese Patent Laid-Open No. 2000-13936 (Patent Document 1) describes an existing control panel and a control device (equipment) controlled by the existing control panel. In an operating system consisting of a large number of power lines, signal lines, communication lines, etc. connected between them, the control panel is updated to a new one while keeping the live line state, and the system downtime and control A control panel update method that keeps the work time for panel update to a minimum is proposed. In this method, (1) for each wiring, a relay panel having two contacts, a closed a contact and an opened b contact, is prepared, and two relay cables are led to the existing control panel from both ends of the closed a contact. (2) Next, a straight sleeve connection is made in a live line state to the above wiring with the ends of the two relay cables in between, and (3) the above wiring between the two places where the straight sleeve is connected is then in a live line state. (4) Next, a new control panel equipped with a terminal block is arranged, one terminal of the terminal block is connected to the control device, and the other terminal is connected to one end of the contact a to the control device. Connected to the other end of the connected b-contact, (5) Further, the b-contact of the relay panel is closed to connect the control device and the new control panel, and (6) the connection of the terminal block is switched to control the control device. And the new control panel are directly connected. (7) Remove the relay cable. The serial is to remove the existing control board and the relay board.

JP 2000-13936 A

  According to the method of Patent Document 1, in the step (5), the output from the control device is input to both the existing control panel and the new control panel via the relay panel and the relay cable, The operation can be adjusted in comparison with the existing control panel. However, Patent Document 1 discloses a plurality of measurement circuits configured such that current signals and voltage signals output from any of control devices (equipment) in the system are measured by the ammeter and voltmeter of the control panel. The control panel transmits a measurement result in each measurement circuit to the monitoring control device, and a signal for controlling the operation of the control device (equipment) based on the measurement result received by the monitoring control device. In the equipment control system that is supposed to be transmitted to the new control panel, the method of changing the configuration of the measurement circuit accompanying the update from the existing control panel to the new control panel and the equipment control via the existing control panel by the monitoring controller The control switching method for switching to device control via the network is not specifically described, and the control data table in the supervisory control device when a large number of measurement circuits are included Not any mention also about the switching of the problem.

  Therefore, an object of the present invention is to form a plurality of measurement circuits as described above, and the measurement results of each measurement circuit measured by the ammeter and / or voltmeter of the control panel are transmitted to the monitoring control device. In the device control system that is designed to transmit a signal for controlling the operation of the device to the control panel based on the measurement result received by the monitoring and control device, the operation stop time of the device control system is shortened as much as possible. Even if a large number of measurement circuits exist, switching the control data table in the monitoring control device from the device control via the existing control panel to the device control via the new control panel is performed only by switching the control data table once. It is to provide an economical control switching method.

  The above-described problems include at least one device that outputs a plurality of current signals, a control panel that includes an ammeter, and controls the operation of the device, and the current value of each of the current signals is the control panel. A plurality of measuring circuits configured to be measured by an ammeter, a monitoring control device for monitoring and controlling the operation of the control panel based on a signal from the control panel, the control panel and the monitoring control device Communication means provided between the control circuit, the control panel transmits the measurement results in the respective measurement circuits to the monitoring control apparatus via the communication means, and the monitoring control apparatus Based on the received measurement result, a control signal is transmitted to the control panel via the communication means, and the control panel controls the operation of the device based on the received control signal. In equipment control system A control switching method for switching from device control via the existing control panel to device control via the new control panel by the supervisory control device in accordance with the update from the existing control panel to the new control panel, each of the measurement circuits The circuit change process is performed to change all measurement circuits so that the current value of the current signal is measured by both the ammeter of the existing control panel and the ammeter of the new control panel. Until the change process is completed, the monitoring control device is allowed to control the device through the existing control board based on the measurement result received from the existing control board, and after the circuit change process for all measurement circuits is completed, This is solved by a control switching method characterized in that the monitoring control device controls the device via the new control panel based on the measurement result received from the new control panel.

  In the present invention, the “measurement result in the measurement circuit” is based on a specific current value or voltage value measured in addition to a specific current value or voltage value measured by an ammeter or a voltmeter. The derived result (for example, a result indicating whether the measured current value or voltage value is larger or smaller than a predetermined reference value, and calculated by applying the measured current value or voltage value to a predetermined calculation formula. Including results).

  According to this method, in the circuit changing process, the current value of the current signal output from the device is measured by both the ammeter of the existing control panel and the ammeter of the new control panel. It is not necessary to switch the control data table of the monitoring control device until the changing process is completed, and the operation of the device can be controlled by the existing control panel. Further, after the circuit change process for all the measurement circuits is completed, the control data table of the monitoring control device may be switched to that for the new control panel, and the operation of the equipment may be controlled by the new control panel. Therefore, even if there are a large number of measurement circuits as in the case of the above-mentioned power generation / substation, the control data table can be switched only once.

  Further, the above-described problem is that at least one device that outputs a plurality of voltage signals, a control panel that includes a voltmeter and controls the operation of the device, and the voltage value of each of the voltage signals is A plurality of measurement circuits configured to be measured by a voltmeter of the control panel, a monitoring control device for monitoring and controlling the operation of the control panel based on a signal from the control panel, the control panel and the monitoring Communication means provided between the control circuit and the control panel, and the control panel transmits the measurement result of each measurement circuit to the monitoring control apparatus via the communication means, and the monitoring control. The apparatus transmits a control signal to the control panel via the communication means based on the received measurement result, and the control panel controls the operation of the device based on the received control signal. Equipment control system In accordance with the update from the existing control panel to the new control panel, the control switching method for switching from device control via the existing control panel by the monitoring control device to device control via the new control panel, the measurement circuit For each of the above, a circuit changing process for changing all the measurement circuits is performed so that the voltage value of the voltage signal is measured by both the voltmeter of the existing control panel and the voltmeter of the new control panel. Until the circuit change process is completed, after the monitoring control device controls the device through the existing control board based on the measurement result received from the existing control board, and after the circuit change process for all measurement circuits is completed The monitoring control device can also be achieved by a control switching method characterized in that the device is controlled via the new control panel based on the measurement result received from the new control panel. It is.

  According to this method, in the circuit change process, the voltage value of the voltage signal output from the device is measured by both the voltmeter of the existing control panel and the voltmeter of the new control panel. It is not necessary to switch the control data table of the monitoring control device until the changing process is completed, and the operation of the device can be controlled by the existing control panel. Further, after the circuit change process for all the measurement circuits is completed, the control data table of the monitoring control device may be switched to that for the new control panel, and the operation of the equipment may be controlled by the new control panel. Therefore, even if there are a large number of measurement circuits as in the case of the above-mentioned power generation / substation, the control data table can be switched only once.

  According to the control switching method of the present invention, even if there are a large number of measurement circuits, there is no need to switch the control data table of the monitoring control device until the circuit changing process for all the measurement circuits is completed. It is possible to control the operation of the equipment via the existing control panel. Accordingly, it is possible to operate the entire device control system during this time, and the operation stop time of the system is shortened. After the circuit change process for all measurement circuits is completed, the control data table of the monitoring and control device is switched to that for the new control panel, so that the operation of the equipment can be controlled by the monitoring and control device via the new control panel. become. Therefore, switching of the control data table is required only once, and the labor cost associated with these operations is unnecessary in addition to the cost of creating the control data table and the trial run of the entire device control system, which is extremely advantageous economically. is there.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
The present embodiment includes at least one device for outputting a plurality of current signals, a control panel for controlling the operation of the device including an ammeter, and the control panel based on signals from the control panel. A monitoring control device for monitoring and controlling the operation of the apparatus, a plurality of pairs of current signal transmission wires provided between the device and the control panel, and a communication means provided between the control panel and the monitoring control device. And a plurality of current value measuring devices configured such that each current signal is transmitted to the ammeter of the control panel via a pair of current signal transmission wires and the current value is measured. A circuit is formed, and the control panel transmits a measurement result in each current value measurement circuit to the monitoring control device via the communication means, and a control signal is transmitted based on the measurement result received by the monitoring control device. Via the communication means In the equipment control system that controls the operation of the equipment based on the control signal transmitted to the control board and received by the control board, a monitoring control device is provided along with the update from the existing control board to the new control board. This corresponds to an embodiment of a control switching method for switching from device control via an existing control panel to device control via a new control panel.

  FIG. 1 is a diagram showing a device control system for implementing the method of the present embodiment and the timing of control switching, and FIG. 2 is a diagram showing a circuit change procedure for a current value measurement circuit.

  As shown in the diagram “1. Before switching” in FIG. 1, the device control system 1 before updating the control panel controls the operation of the device 4 that outputs a current signal and the device 4 that includes an ammeter. The existing control panel 3, the monitoring control device 2 that monitors and controls the operation of the control panel 3 based on the signal from the existing control panel 3, and the current signal transmission wiring installed between the existing control panel 3 and the device 4 5 (5a and 5b in FIG. 2), and a monitoring control communication means 6 installed between the monitoring control device 2 and the existing control panel 3. The current value of the current signal output from the device 4 is measured by the ammeter of the existing control panel 3 by the existing control panel 3, the pair of current signal transmission wires 5 (5a, 5b) and the device 4. The current value measuring circuit thus formed is formed. In FIG. 1 and FIG. 2, in consideration of simplicity of explanation, a single device 4 and a pair of current signal transmission wires 5 (5 a, 5 b) installed between the device 4 and the existing control panel 3 are shown. ), Only one current value measuring circuit is shown, but actually, a large number of devices 4 and a large number of pairs of current signal transmission wirings 5 (5a, 5b) are included. At least a pair of current signal transmission lines 5 (5a, 5b) extends toward the existing control panel 3, and thus a large number of current value measurement circuits are formed. Then, according to the present embodiment, the existing control panel 3 is updated to the new control panel 3 ′.

  The monitoring control device 2 for monitoring and controlling the operation of the control panel includes a central processing unit, a communication unit with the control panel, and a storage unit storing a control data table necessary for monitoring control of the control panel. A communication means 6 such as an optical communication cable or a radio is provided between the monitoring control device 2 and the existing control panel 3. The monitoring control device 2 can monitor and control each control panel 3, 3 ′ using a control data table corresponding to each control panel 3, 3 ′ stored in the storage unit. Signals necessary for the 3 ′ supervisory control are transmitted and received between the supervisory control device 2 and the control panels 3 and 3 ′ via the communication means 6.

  Further, as shown in “1. Before switching” in the upper part of FIG. 2, in the device control system 1 before the control panel update, the current signal output from the device 4 is a CT (variable) attached to the device 4. Is transmitted to the existing control panel 3 through the test terminal 10 for the fluency circuit and the pair of current signal transmission wires 5a and 5b. That is, the current output from the device 4 is input to one of the pair of input parts of the ammeter 3a of the existing control panel 3 through the wiring 5a, and is output from the other input part of the ammeter 3a through the ammeter 3a. Thus, a current value measuring circuit configured to be returned to the device 4 is formed.

  Next, a circuit changing method of the current value measuring circuit in the present embodiment will be described with reference to the “2. Circuit changing process” in the middle of FIG.

A CT test plug is inserted into the CT test terminal 10 attached to the device 4 so that the current output from the device 4 does not flow to the existing control panel 3 and the new control panel 3 '. 3 is connected to the input terminal 31 of the ammeter 3'a attached to the newly installed control panel 3 'by removing the tip of the wiring 5a connected to one input portion of the current meter 3a. The tip of the wiring 5b connected to the other input part of the total 3a is removed and connected to an empty terminal 33 provided on the newly installed control panel 3 ′. Further, the input terminal 32 of the ammeter 3'a of the new control panel 3 'and one input portion of the ampere meter 3a of the vacant existing control panel 3 are connected by the first temporary current signal transmission wiring 5c, and the existing control panel 3 The other input part of the current meter 3a and the empty terminal 33 of the newly installed control panel 3 'are connected by the second temporary current signal transmission wiring 5d. The inserted CT test plug is removed and the circuit changing process is completed. Current flow after disconnecting the test plug for CT, in view of "2. Circuit changing step" in the middle of Figure 2, shown in solid lines.

  That is, in the circuit changing process, the current value measurement circuit inputs the current output from the device 4 to the input terminal 31 of the ammeter 3'a of the new control panel 3 'through the current signal transmission wiring 5a, and sets the new control. The current output from the other input terminal 32 through the ammeter 3'a of the panel 3 'is input to one input portion of the ammeter 3a of the existing control panel 3 through the first temporary current signal transmission wiring 5c. The current output from the other input portion of the ammeter 3a of the existing control panel 3 is returned to the device 4 again through the second temporary current signal transmission wiring 5d, the empty terminal 33, and the current signal transmission wiring 5b. The measurement circuit is changed. By changing the measurement circuit, the current signal from the device 4 can be measured by both the ammeter 3a of the existing control panel 3 and the ammeter 3'a of the new control panel 3. The same processing is performed for all current value measurement circuits in the device control system 1.

  In the diagram of “2. Circuit change process” in FIG. 1, the current signal from the device 4 can be measured by both the ammeter 3a of the existing control panel 3 and the ammeter 3′a of the new control panel 3. A control system 1 is shown. In such a device control system 1, the monitoring control device 2 uses the control data table corresponding to the existing control panel 3 stored in the storage unit until the circuit changing process for all current value measurement circuits is completed. Then, signals are exchanged with the existing control panel 3 via the communication line 6, and the equipment 4 is controlled by the existing control panel 3. Then, after the circuit change process is completed for all the current value measurement circuits, the control data table in the supervisory control device 2 is switched as shown in “3. Data switching” in FIG. The control data table corresponding to the new control panel 3 ′ stored in the section is used to send and receive signals to and from the new control panel 3 ′ via the communication line 6, and the new control panel 3 ′ The device 4 is controlled via

  The removal operation of the existing control panel 3 shown in the diagram “4. After switching” in FIG. 1 can be performed at an appropriate time after the monitoring control device 2 controls the equipment 4 via the new control panel 3 ′. In this operation, a CT test plug is inserted into a CT test terminal 10 attached to the device 4 as shown in “3. After switching” in FIG. 2, and output from the device 4 as indicated by a dotted line. The current of the first temporary current signal transmission wiring 5c is connected from the input terminal 32 of the ammeter 3'a of the new control panel 3 'to prevent the current from flowing to the existing control panel 3 and the new control panel 3'. Remove the tip of the second temporary current signal transmission wiring 5d and the tip of the current signal transmission wiring 5b from the empty terminal 33 of the new control panel 3 ', and connect the tip of the current signal transmission wiring 5b to the ammeter 3 of the new control panel 3'. Connect to the input terminal 32 of 'a. The free terminal 33 and the input terminal 32 may be connected by a jumper wire while the tip of the current signal transmission wiring 5b is left connected to the free terminal 33. Thereafter, the CT test plug is removed and the operation is completed. The current flow after the CT test plug is removed is indicated by a solid line in FIG. 2, “3. After switching”.

  According to the control switching method of the present embodiment, the current value of the current signal output from the device 4 is changed to the ammeter 3a of the existing control panel 3 and the ammeter of the new control panel 3 'by a very simple procedure in the circuit changing process. Since measurement is possible by both 3'a, accidents due to wiring mistakes can be avoided and the time required for wiring can be reduced, so that the operation stop time of the device control system 1 is extremely short.

  Further, it is not necessary to switch the control data table of the monitoring control device 2 until the circuit changing process for all the current value measurement circuits is completed, and the operation of the device 4 can be controlled by the existing control panel 3. Even in the case where the number of measurement circuits 5 is extremely large, it is sufficient to prepare two types of control data tables for the existing control panel and a control data table for the new control panel in the storage unit of the monitoring control device 2. It is very advantageous economically.

  Furthermore, in the circuit changing step, the tip of the second temporary current signal transmission line 5d and the tip of the current signal transmission line 5b are connected to the empty terminal 33 of the new control panel 3, thereby making it easy on the new control panel 3 '. The removal of the existing control panel 3 can be completed quickly and easily with only simple wiring changes.

(Second Embodiment)
Similarly to the first embodiment, this embodiment also has at least one device that outputs a plurality of current signals, a control panel for controlling the operation of the device including the ammeter, A monitoring control device that monitors and controls the operation of the control panel based on a signal; a plurality of pairs of current signal transmission wires provided between the device and the control panel; and the control panel and the monitoring control device. Each current signal is transmitted to the ammeter of the control panel via a pair of current signal transmission wires, and the current value is measured. A plurality of current value measurement circuits are formed, and the control panel transmits the measurement results in each current value measurement circuit to the monitoring control device via the communication means, and the measurement received by the monitoring control device. Control signal based on result above Update from an existing control panel to a new control panel in a device control system designed to control the operation of the device based on a control signal transmitted to the control panel via a communication means and received by the control panel Accordingly, this embodiment corresponds to an embodiment of a control switching method for switching from device control via the existing control panel by the monitoring control device to device control via the new control panel.

  FIG. 3 is a diagram illustrating a device control system and control switching timing for implementing the method of the present embodiment, and FIG. 4 is a diagram illustrating a circuit change procedure for the current value measurement circuit.

  The device control system 1 used in the present embodiment has substantially the same components as the device control system used in the first embodiment, as shown in “1. Before switching” in FIG. In this embodiment, the existing control panel 3 is updated to the new control panel 3 ′. 3 and 4, in consideration of simplicity of explanation, a single device 4 and a pair of current signal transmission wires 5 (5a, 5b) installed between the device 4 and the existing control panel 3 are shown. ), Only one current value measuring circuit is shown, but actually, a large number of devices 4 and a large number of pairs of current signal transmission wirings 5 (5a, 5b) are included. At least a pair of current signal transmission lines 5 (5a, 5b) extends toward the existing control panel 3, and thus a large number of current value measurement circuits are formed.

  Hereinafter, the same components as those of the device control system in the first embodiment are denoted by the same reference numerals, and further description thereof is omitted, and only different points will be described. In the present embodiment, prior to the change of the current value measuring circuit, the input terminals 31 and 32 of the ammeter 3′a of the new control panel 3 ′ are provided between the existing control panel 3 and the device 4. The new current signal transmission wiring 5 ′ (5′a, 5′b in FIG. 4) corresponding to the current signal transmission wiring 5 (5a, 5b in FIG. 4) is wired.

  Next, a method of changing the current value measuring circuit in the present embodiment will be described with reference to the “2. Circuit changing process” in the middle of FIG.

  A CT test plug is inserted into the CT test terminal 10 attached to the device 4 so that the current output from the device 4 does not flow to the existing control panel 3 and the new control panel 3 '. The wiring 5 a extending from the newly installed control panel 3 ′ is connected to the terminal of the CT test terminal 10 to which the tip of the wiring 5 a extending from 3 is connected, and is extended from the existing control panel 3. The wiring 5′b extending from the newly installed control panel 3 ′ is overlapped and connected to the terminal of the CT test terminal 10 to which the tip of the wiring 5b is connected. The inserted CT test plug is removed and the circuit changing process is completed. The flow of current after the CT test plug is removed is indicated by a solid line in the “2. Circuit changing process” in the middle of FIG.

  That is, in the circuit changing process, the current value measuring circuit inputs the current output from the device 4 to the input terminal 31 of the ammeter 3'a of the new control panel 3 'via the new current signal transmission wiring 5'a. Then, it passes through the ammeter 3'a of the new control panel 3 'and is returned to the device 4 again through the new current signal transmission wire 5'b, and the current output from the device 4 is supplied to the current signal transmission wire. The measurement circuit is changed so that it is input to the ammeter 3a of the existing control panel 3 through 5a, is returned to the device 4 through the ammeter 3a of the existing control panel 3 and again through the current signal transmission wiring 5b. The By changing the measurement circuit, the current signal from the device 4 can be measured by both the ammeter 3a of the existing control panel 3 and the ammeter 3'a of the new control panel 3. The same processing is performed for all current value measurement circuits in the device control system 1.

  In the diagram of “2. Circuit change process” in FIG. 3, the current signal from the device 4 can be measured by both the ammeter 3a of the existing control panel 3 and the ammeter 3′a of the new control panel 3. A control system 1 is shown. In such a device control system 1, the monitoring control device 2 uses the control data table corresponding to the existing control panel 3 stored in the storage unit until the circuit changing process for all current value measurement circuits is completed. Then, signals are exchanged with the existing control panel 3 via the communication line 6, and the equipment 4 is controlled by the existing control panel 3. Then, after the circuit change process is completed for all the current value measurement circuits, the control data table in the monitoring control device 2 is switched as shown in “3. Data switching” in FIG. The control data table corresponding to the new control panel 3 ′ stored in the section is used to send and receive signals to and from the new control panel 3 ′ via the communication line 6, and the new control panel 3 ′ The device 4 is controlled via

  The removal operation of the existing control panel 3 shown in the diagram “4. After switching” in FIG. 3 can be performed at an appropriate time after the monitoring control device 2 controls the equipment 4 via the new control panel 3 ′. In this work, a CT test plug is inserted into the CT test terminal 10 attached to the device 4 as shown in “3. After switching” in FIG. 4 and output from the device 4 as indicated by a dotted line. The current signal transmission wirings 5 a and 5 b connected to the existing control panel 3 are removed from the terminals of the CT test terminal 10 after the current is prevented from flowing to the existing control panel 3 and the new control panel 3 ′. Thereafter, the CT test plug is removed and the operation is completed. The flow of current after the CT test plug is removed is indicated by a solid line in the “3. After switching” diagram of FIG.

  According to the control switching method of the present embodiment, the current value of the current signal output from the device 4 is changed to the ammeter 3a of the existing control panel 3 and the ammeter of the new control panel 3 'by a very simple procedure in the circuit changing process. Since measurement is possible by both 3'a, accidents due to wiring mistakes can be avoided and the time required for wiring can be reduced, so that the operation stop time of the device control system 1 is extremely short.

  Further, it is not necessary to switch the control data table of the monitoring control device 2 until the circuit changing process for all the current value measuring circuits is completed, and the operation of the device can be controlled by the existing control panel 3. Even when the number of measuring circuits 5 is extremely large, it is sufficient to prepare two types of control data tables for the existing control panel and a control data table for the new control panel in the storage unit of the monitoring control device 2. Yes, it is very advantageous economically.

  Furthermore, since the new current signal transmission wiring 5 ′ is wired to the input terminals 31 and 32 of the ammeter 3′a of the new control panel 3 ′ prior to the circuit changing process, the circuit changing process is performed on the device 4 side. The tip of the current signal transmission wiring 5 connected to the existing control panel 3 as in the circuit changing process of the first embodiment can be removed, and the wiring 5 is pulled toward the new control panel 3 ′. This eliminates the need to connect to the new control panel 3 '. The operation of pulling the wiring 5 toward the newly installed control panel 3 ′ is an operation that requires a relatively large amount of work. However, since this operation is not necessary in the present embodiment, the distance between the new control panel 3 ′ and the existing control panel 3 is particularly large. When there is a large distance, or when there are a large number of current value measuring circuits, the work load in the entire circuit changing process is greatly reduced.

(Third embodiment)
In this embodiment, at least one device that outputs a plurality of voltage signals, a control panel for controlling the operation of the device including a voltmeter, and the control based on a signal from the control panel. A monitoring control device for monitoring and controlling the operation of the panel; a plurality of pairs of voltage signal transmission lines provided between the device and the control panel; and a communication provided between the control panel and the monitoring control device. And a plurality of voltage values configured such that each voltage signal is transmitted to the voltmeter of the control panel via a pair of voltage signal transmission wires and the voltage value is measured. A measurement circuit is formed, and the control panel transmits a measurement result in each voltage value measurement circuit to the monitoring control device via the communication means, and a control signal based on the measurement result received by the monitoring control device. Via the communication means above In the equipment control system that controls the operation of the equipment based on the control signal transmitted to the control board and received by the control board, the monitoring control is performed along with the update from the existing control board to the new control board. This corresponds to an embodiment of a control switching method for switching from device control via an existing control panel to device control via a new control panel.

  FIG. 5 is a diagram showing a device control system and control switching timing for implementing the method of the present embodiment, and FIG. 6 is a diagram showing a change procedure for the voltage value measurement circuit.

  As shown in the diagram “1. Before switching” in FIG. 5, the device control system 1 before updating the control panel controls the operation of the device 4 that outputs a voltage signal and the device 4 that includes a voltmeter. Voltage signal transmission installed between the existing control panel 3, the monitoring control device 2 that monitors and controls the operation of the existing control panel 3 based on signals from the existing control panel 3, and the equipment 4 The wiring 5 (5e, 5f in FIG. 3) and the monitoring control communication means 6 installed between the monitoring control device 2 and the existing control panel 3 are configured. The voltage value of the voltage signal output from the device 4 is measured by the voltmeter of the existing control panel 3 by the existing control panel 3, the pair of voltage signal transmission wires 5 (5e, 5f) and the device 4. The measured voltage value measurement circuit is formed. 5 and 6, in consideration of the simplicity of explanation, a pair of voltage signal transmission lines 5 (5e, 5f) installed between one device 4 and the device 4 and the existing control panel 3 are shown. ), Only one voltage value measurement circuit is shown, but in reality, a large number of devices 4 and a large number of pairs of voltage signal transmission wirings 5 (5e, 5f) are included. At least a pair of voltage signal transmission lines 5 (5a, 5b) extends toward the control panel 3, and thus a large number of voltage value measurement circuits are formed. Then, according to the present embodiment, the existing control panel 3 is updated to the new control panel 3 ′.

  The monitoring control device 2 for monitoring and controlling the operation of the control panel includes a central processing unit, a communication unit with the control panel, and a storage unit storing a control data table necessary for monitoring control of the control panel. A communication means 6 such as an optical communication cable or a radio is provided between the monitoring control device 2 and the existing control panel 3. The monitoring control device 2 can monitor and control each control panel 3, 3 ′ using a control data table corresponding to each control panel 3, 3 ′ stored in the storage unit. Signals necessary for the 3 ′ supervisory control are transmitted and received between the supervisory control device 2 and the control panels 3 and 3 ′ via the communication means 6.

  Further, as shown in the diagram “1 before switching” in FIG. 6, in the device control system 1 before the control panel update, the voltage output from the device 4 is already installed via a pair of voltage signal transmission lines 5 e and 5 f. A voltage value measurement circuit configured to be input to a pair of input units of the voltmeter 3b of the control panel 3 is formed.

  Next, a method for changing the voltage value measuring circuit in the present embodiment will be described with reference to the “2. Circuit changing step” in FIG.

  The tip of the wiring 5e connected to one input part of the voltmeter 3b of the existing control panel 3 is removed and connected to the corresponding one input terminal 34 in the voltmeter 3'b attached to the new control panel 3 '. The tip of the wiring 5f connected to the other input part of the voltmeter 3b of the existing control panel 3 is removed and connected to the corresponding other input terminal 35 of the voltmeter 3'b of the new control panel 3 '. Further, in the present embodiment, as the pair of temporary voltage signal transmission wirings 5g and 5h, wirings configured by two wiring parts 5g-1, 5g-2 and 5h-1, 5h-2 are used, respectively. The first wiring part 5g-1 is connected between the input terminal 34 and the vacant terminal 36 of the voltmeter 3'b of the control panel 3 ', and the vacant terminal 36 and one input part of the voltmeter 3b of the existing control panel are connected. The second wiring part 5g-2 is connected between them, the first wiring part 5h-1 is connected between the other input terminal 35 and the empty terminal 37 of the voltmeter 3'b of the newly installed control panel 3 ', and further empty The second wiring portion 5h-2 is connected between the terminal 37 and the other input portion of the voltmeter 3b of the existing control panel.

  That is, in the circuit changing process, the voltage value measuring circuit sends the voltage signal output from the device 4 to the input terminals 34 and 35 of the voltmeter 3'b of the newly installed control panel 3 'via the voltage signal transmission wires 5e and 5f. The voltage signal is also branched from the input terminals 34 and 35 of the voltmeter 3'b of the new control panel 3 ', and the first wiring part 5g-1, the empty terminal 36, the second wiring part 5g-2, The voltage is input to the voltmeter 3b of the existing control panel 3 through the first wiring portion 5h-1, the empty terminal 37, and the second wiring portion 5h-2. By changing the measurement circuit, the voltage signal from the device 4 can be measured by both the voltmeter 3b of the existing control panel 3 and the voltmeter 3'b of the new control panel 3. The same processing is performed for all voltage value measurement circuits in the system 1.

  In the diagram of “2. Circuit change process” in FIG. 5, the voltage signal from the device 4 can be measured by both the voltmeter 3b of the existing control panel 3 and the voltmeter 3′b of the new control panel 3. A control system 1 is shown. In such a device control system 1, the monitoring control device 2 uses the control data table corresponding to the existing control panel 3 stored in the storage unit until the circuit change process for all voltage value measurement circuits is completed. Then, signals are exchanged with the existing control panel 3 via the communication line 6, and the equipment 4 is controlled by the existing control panel 3. Then, after the circuit change process is completed for all the voltage value measuring circuits, the control data table in the monitoring control device 2 is switched as shown in “3. Data switching” in FIG. The control data table corresponding to the new control panel 3 ′ stored in the section is used to send and receive signals to and from the new control panel 3 ′ via the communication line 6, and the new control panel 3 ′ The device 4 is controlled via

  The removal operation of the existing control panel shown in the diagram “4. After switching” in FIG. 5 can be performed at an appropriate time after the monitoring control device 2 controls the equipment 4 through the new control panel 3 ′. This operation is performed by removing the tips of the second wiring portions 5g-2 and 5h-2 from the empty terminals 36 and 37, as shown in “3. After switching” in FIG.

  According to the control switching method of the present embodiment, the voltage value of the voltage signal output from the device 4 is converted into the voltmeter 3b of the existing control panel 3 and the voltmeter of the new control panel 3 'by a very simple procedure in the circuit changing process. Since measurement is possible by both 3'b, accidents due to wiring mistakes can be avoided and the time required for wiring can be reduced, so that the operation stop time of the device control system 1 is extremely short.

  Further, it is not necessary to switch the control data table of the monitoring control device 2 until the circuit changing process for all the voltage value measuring circuits is completed, and the operation of the device can be controlled by the existing control panel 3. Even when the number of measuring circuits 5 is extremely large, it is sufficient to prepare two types of control data tables for the existing control panel and a control data table for the new control panel in the storage unit of the monitoring control device 2. Yes, it is very advantageous economically.

  Furthermore, the removal of the existing control panel 3 can be completed quickly and simply by simply changing the wiring on the new control panel 3 '.

  Hereinafter, three embodiments of the present invention have been described. However, the present invention is not limited to the above-described embodiments, and modifications can be made without departing from the spirit of the present invention. For example, both a current value measuring circuit and a voltage value measuring circuit may be included in one device control system. In this case, for example, the current value measuring circuit measures the voltage value as in the first embodiment. The circuit can be processed as in the third embodiment. Further, in the first embodiment and the third embodiment described above, the empty terminal provided in the new control panel is used, but without using the empty terminal, the ammeter of the existing control panel and the new control panel You may make it connect an ammeter or the voltmeter of an existing control panel, and the voltmeter of a new control panel directly.

It is the figure which showed the apparatus control system and control switching procedure for implementing one Embodiment of the control switching method accompanied by the change of an electric current value measurement circuit. It is the figure which showed the change method of the electric current value measurement circuit in embodiment shown in FIG. It is the figure which showed the apparatus control system and control switching procedure for implementing other embodiment of the control switching method accompanying the change of an electric current value measurement circuit. It is the figure which showed the change method of the electric current value measurement circuit in embodiment shown in FIG. It is the figure which showed the apparatus control system and control switching procedure for implementing one Embodiment of the control switching method accompanied by the change of a voltage value measurement circuit. It is the figure which showed the change method of the voltage value measurement circuit in embodiment shown in FIG. It is the figure which showed the example of the conventional control panel update method.

DESCRIPTION OF SYMBOLS 1 Device control system 2 Monitoring control apparatus 3 Existing control board 3a Existing control board ammeter 3b Existing control board voltmeter 3 'New control board 3'a New control board ammeter 3'b New control board voltmeter 4 Equipment 5, 5 'Signal transmission wiring 5a, 5b Current signal transmission wiring 5'a, 5'b New current signal transmission wiring 5c, 5d Temporary current signal transmission wiring 5e, 5f Voltage signal transmission wiring 5g, 5h Installation voltage signal transmission wiring 6 Communication means 10 CT test terminals 31 and 32 Ammeter input terminal 33 of the new control panel Empty terminal 34 and 35 Input terminal 36 and 37 of the voltmeter of the new control panel Empty terminal

Claims (2)

At least one device that outputs a plurality of current signals;
A control panel with an ammeter for controlling the operation of the device;
A plurality of measurement circuits configured such that the current value of each of the current signals is measured by an ammeter of the control panel;
A monitoring control device for monitoring and controlling the operation of the control panel based on a signal from the control panel;
A communication means provided between the control panel and the monitoring control device;
Contains
The control panel transmits a measurement result in each of the measurement circuits to the monitoring control device via the communication means,
The monitoring control device transmits a control signal to the control panel via the communication means based on the received measurement result,
In the equipment control system in which the control panel is configured to control the operation of the equipment based on the received control signal, the existing control by the supervisory control device is accompanied by the update from the existing control board to the new control board. A control switching method for switching from device control via a panel to device control via a new control panel,
For each of the measurement circuits, carry out a circuit change step for changing all the measurement circuits so that the current value of the current signal is measured by both the ammeter of the existing control panel and the ammeter of the new control panel,
Until the circuit change process for all measurement circuits is completed, the monitoring control device controls the device via the existing control panel based on the measurement result received from the existing control panel,
After the circuit change process for all measurement circuits is completed, the monitoring control device controls the device through the new control panel based on the measurement result received from the new control panel.
A control switching method characterized by that. At least one device that outputs a plurality of voltage signals;
A control panel with a voltmeter for controlling the operation of the device;
A plurality of measurement circuits configured such that the voltage value of each of the voltage signals is measured by a voltmeter of the control panel;
A monitoring control device for monitoring and controlling the operation of the control panel based on a signal from the control panel;
A communication means provided between the control panel and the monitoring control device;
Contains
The control panel transmits a measurement result in each of the measurement circuits to the monitoring control device via the communication means,
The monitoring control device transmits a control signal to the control panel via the communication means based on the received measurement result,
In the equipment control system in which the control panel is configured to control the operation of the equipment based on the received control signal, the existing control by the supervisory control device is accompanied by the update from the existing control board to the new control board. A control switching method for switching from device control via a panel to device control via a new control panel,
For each of the measurement circuits, a circuit changing step is performed to change all the measurement circuits so that the voltage value of the voltage signal is measured by both the voltmeter of the existing control panel and the voltmeter of the new control panel,
Until the circuit change process for all measurement circuits is completed, the monitoring control device controls the device via the existing control panel based on the measurement result received from the existing control panel,
After the circuit change process for all measurement circuits is completed, the monitoring control device controls the device through the new control panel based on the measurement result received from the new control panel.
A control switching method characterized by that.

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