JP2017070012A - Monitoring control system and operation monitoring terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a monitoring control system and operation monitoring terminal that, for an operator who remotely performs tap change operation, indicate whether or not the tap change operation is possible, on an operation monitoring screen.SOLUTION: A monitoring control system of an embodiment comprises: a determination unit that, through communication, acquires tap state information on an on-load tap changer equipped transformer and determines whether or not the on-load tap changer equipped transformer is in a situation in which tap change operation is possible; and an indication unit that, when the on-load tap changer equipped transformer is in a situation in which the tap change operation is possible, indicates that the tap operation is possible or, when the on-load tap changer equipped transformer is in a situation in which the tap change operation is impossible, indicates that the tap operation is inhibited.SELECTED DRAWING: Figure 1

Description

  Embodiments described herein relate generally to a monitoring control system and an operation monitoring terminal.

  Conventionally, when a tap of a load tap changer (hereinafter referred to as LTC) installed in a transformer is controlled remotely, the operator is present due to the time difference between the tap change operation by the operator and the actual tap change. The position and situation of the tap could not be recognized correctly. For this reason, there is an inherent risk that the operator will perform the tap switching operation continuously, placing a burden on the switching switch and causing the LTC to fail.

JP 2003-87974 A

  A problem to be solved by an embodiment of the present invention is to provide a monitoring control system and an operation monitoring terminal for displaying, on an operation monitoring screen, whether or not a tap switching operation is possible for an operator who performs a tap switching operation from a remote location. It is to be.

  The monitoring control system of the embodiment acquires the tap state information of the transformer with a load tap changer via communication, and determines whether the transformer with a load tap changer can perform a tap change operation. In the situation where the on-load tap changer transformer can perform a tap switching operation, it is displayed that the tap operation is possible, or the on-load tap changer transformer cannot perform a tap switching operation. A display unit that displays that the tap operation is prohibited.

1 is an apparatus configuration diagram including a monitoring control system according to a first embodiment of the present invention. It is a figure which shows the function structure of the operation monitoring terminal which concerns on the 1st Embodiment of this invention. It is a figure which shows the function structure of the control master station which concerns on the 1st Embodiment of this invention. It is a figure which shows the function structure of the control slave station which concerns on the 1st Embodiment of this invention. It is a figure which shows the function structure of the control apparatus (transformer with LTC) which concerns on the 1st Embodiment of this invention. It is a flowchart which shows tap switching operation of the 1st Embodiment of this invention. It is an apparatus block diagram including the monitoring control system which concerns on the 2nd Embodiment of this invention. It is a figure which shows the function structure of the operation terminal only for LTC control which concerns on the 2nd Embodiment of this invention. It is a figure which shows the function structure of the controller only for LTC control which concerns on the 2nd Embodiment of this invention. It is a flowchart which shows tap switching operation which concerns on the 2nd Embodiment of this invention. It is a flowchart of the tap switching operation possible display which concerns on the 3rd Embodiment of this invention. It is a figure which shows the 1 type | system | group LTC tap switching operation display screen which concerns on the 3rd Embodiment of this invention.

Hereinafter, embodiments for carrying out the invention will be described with reference to the drawings.
(First embodiment)
(Constitution)
FIG. 1 is an apparatus configuration diagram including a monitoring control system 1 according to the first embodiment. The monitoring control system 1 according to the first embodiment includes an operation monitoring terminal 11, a control master station 21, and control slave stations 31 to 33, each of which is connected by a communication line.

  The operation monitoring terminal 11 is a terminal that accepts an LTC operation input by an operator, and the tap of the LTC is controlled by the input LTC operation.

  The control master station 21 communicates with the operation monitoring terminal 11 and the control slave stations 31 to 33 to transmit and receive various types of information.

  The control slave station 31 performs monitoring control of the control device (transformer with LTC) 41. The LTC transformer is a transformer with a load tap changer. It is assumed that the control slave station 32 and the control slave station 33 perform monitoring control of equipment not related to LTC.

  The communication line connecting the operation monitoring terminal 11 and the control master station 21 is transmitted, the communication line connecting the control master station 21 and the control slave stations 31 to 33 is transmitted, and the control slave stations 31 to 33 and the control devices 41 to 43 are connected. Each communication line to be connected is a contact.

  FIG. 2 is a diagram illustrating a functional configuration of the operation monitoring terminal 11.

  The operation monitoring terminal 11 displays an LTC tap position information, tap switching information, tap operation availability information, failure information, and the like to the operator, and an operation for accepting an LTC tap switching operation command by the operator. Unit 113 and a communication unit 115 that transmits an LTC tap switching operation command to control master station 21. In addition, various information of the control devices 2 and 3 is acquired via the control master station 21 and the control slave stations 32 and 33.

  Also, it has a history storage / printing function 114 for storing and printing the LTC tap position switching history. The history storing / printing function 114 is not necessarily required for the system.

  FIG. 3 is a diagram illustrating a functional configuration of the control master station 21.

  The control master station 21 performs signal processing of the LTC tap switching operation command and determines to which of the control slave stations 31 to 33 a signal processing / process management unit 212 is to be transmitted. And a communication unit 214 with a control slave station that transmits to the station 31.

  Further, the control master station 21 detects a tap change on the control device side via the control slave station, and adds a tap change count integration unit 213 that adds to the integrated value of the change count stored therein. The communication unit 211 communicates with the monitoring terminal that transmits the added integrated value to the operation monitoring terminal 11. The tap switching number accumulation unit 213 is not necessarily required for the system.

FIG. 4 is a diagram showing a functional configuration of the control slave station 31.
The control slave station 31 includes a transmission contact conversion unit 312 that receives the LTC tap switching operation command and converts it into a contact signal, and a communication unit 315 that contacts the control device (transformer with LTC) 41.

  Further, the control slave station 31 obtains tap state information such as a tap position and a failure, and a contact transmission conversion unit 314 that transmits and converts contact information such as a tap position and a failure and transmits the information to the control master station. And a determination unit 313 for determining whether the situation can be performed. In the contact transmission conversion unit 314, an analog signal such as a secondary voltage of the transformer is converted into a digital value and transmitted.

FIG. 5 is a diagram illustrating a functional configuration of the control device (transformer with LTC) 41.
When receiving a contact signal from the control slave station, the control device (transformer with LTC) 41 operates a dedicated motor to perform the tap switching operation 414 for performing the tap switching operation, and the changed tap position information as a contact. An apparatus operation contact conversion unit 415 that converts the signal into a signal and a communication unit 413 that transmits the contact signal to the control slave station.

(Function)
FIG. 6 is a flowchart of the tap switching operation.

  The control device (LTC-equipped transformer) 41 includes a 1-system LTC-equipped transformer 411 and a 2-system LTC-equipped transformer 412, and the tap switching operation is “1 system alone”, “2 systems alone”, or “parallel” Yes. In the case of “parallel”, when the taps of the 1-system LTC-equipped transformer 411 and the 2-system LTC-equipped transformer 412 coincide, both tap switching operations are performed by either one of the tap switching operations.

(Single system single tap switching operation)
First, when the operation unit 113 receives a 1-system tap switching operation (S11), the subsequent flow differs depending on the TR operation mode (S21). The TR operation mode (S21) is set in advance. TR means a transformer.

  When the TR operation mode (S21) is “single”, the determination unit 313 determines whether the 1-system control mode is manual (S41). This is because in the automatic control mode, the tap switching operation is performed after switching to the manual control mode. The automatic control mode refers to a mode in which control is performed by a device that automatically performs LTC tap switching such as an automatic voltage regulator when used in combination with a device that automatically performs LTC tap switching. When the 1-system control mode is not manual (No in S41), the switching command for the control device is not output. That is, the 1-system tap switching operation does not occur.

  When the 1-system control mode is manual (Yes in S41), the determination unit 313 determines whether the 1-system tap is being switched (S51). When the 1-system tap is being switched (No in S51), the switching command to the control device is not output.

  When the 1-system tap is not being switched (Yes in S51), the determination unit 313 determines whether the 1-system tap is being switched or not (S61). “Tap switching is in a traffic jam” means that the received tap switching operation has not been completed. When the 1-system tap switching is in a traffic jam (No in S61), the switching command for the control device is not output.

  When the 1-system tap switching is not in a traffic jam (Yes in S61), the determination unit 313 determines whether a certain time has elapsed since the previous 1-system tap switching (S71). The user can select the fixed time setting. If the predetermined time has not elapsed since the previous 1-system tap switching (No in S71), the switching command to the control device is not output.

  When a certain time has elapsed since the previous 1-system tap switching (Yes in S71), the determination unit 313 outputs a tap switching command to the control device (transformer with LTC) 41 via the communication unit 315, and taps. The switching operation unit 414 starts the tap switching operation of the 1-system LTC-equipped transformer 411 (S81).

  Thereafter, the tap switching number integration unit 213 integrates the 1-system LTC tap switching number, and the display unit 112 displays it (S91). However, the integration / display of the number of tap switching is not necessarily required for the system.

(2 system single tap switching operation)
Similar to the 1-system single tap switching operation, the 2-system single tap switching operation is performed.

  First, when the operation unit 113 receives a 2-system tap switching operation (S12), the subsequent flow differs depending on the TR operation mode (S22). The TR operation mode (S22) is set in advance.

  When the TR operation mode (S22) is “single”, the determination unit 313 determines whether the second system control mode is manual (S42). When the 2 system control mode is not manual (No in S42), the switching command to the control device is not output.

  When the second system control mode is manual (Yes in S42), the determination unit 313 determines whether the second system tap is being switched (S52). When the 2 system tap is being switched (No in S52), the switching command to the control device is not output.

  If the 2 system tap is not being switched (Yes in S52), the determination unit 313 determines whether the 2 system tap is being switched or not (S62). When the 2 system tap switching is in a traffic jam (No in S62), the switching command to the control device is not output.

  When the 2 system tap switching is not in a traffic jam (Yes in S62), the determination unit 313 determines whether a certain time has elapsed since the previous 2 system tap switching (S72). If the predetermined time has not elapsed (No in S72), the switching command for the control device is not output.

  When a certain time has elapsed since the last two-system tap switching (Yes in S72), the determination unit 313 outputs a tap switching command to the control device (LTC transformer) 41 via the communication unit 315, and taps. The switching operation unit 412 starts the tap switching operation of the transformer 412 with LTC 2 (S82).

  Thereafter, the tap switching number integrating unit 213 integrates the number of 2-system LTC tap switching, and the display unit 112 displays it (S92). Accumulation / display of the number of tap switching is not necessarily required for the system.

(Parallel tap switching operation)
The parallel tap switching operation is to perform both tap switching operations by one of the tap switching operations when the taps of the system 1 transformer and the system 2 transformer match.

  When performing a parallel tap switching operation, the operation unit 113 receives a 1-system tap switching operation (S11), and when the TR operation mode (S21) is "1 system parallel main" or a 2-system tap switching operation ( S12), when the TR operation mode (S22) is “2-system parallel main”.

  At that time, the determination unit 313 determines whether the taps of the 1-system LTC transformer and the 2-system LTC transformer match (S33). If the taps do not match (No in S33), the switching command for the control device is not output.

  If the taps match (Yes in S33), the determination unit 313 determines whether the 1-system and 2-system control mode is manual (S43). When either the 1-system or 2-system control mode is not manual (No in S43), the switching command for the control device is not output.

  When the 1-system and 2-system control modes are both manual (Yes in S43), the determination unit 313 determines whether the 1-system and 2-system taps are being switched (S53). When either one of the 1-system and 2-system taps is being switched (No in S53), the switching command to the control device is not output.

  If neither the 1-system or 2-system tap is being switched (Yes in S53), the determination unit 313 determines whether the 1-system, 2-system tap switching is in a traffic jam (S63). When the switching between the 1-system and 2-system taps is in a traffic jam (No in S63), the switching command for the control device is not output.

  When neither the 1-system or 2-system tap switching is in a traffic jam (Yes in S63), the determination unit 313 determines whether a certain time has elapsed since the previous 1-system or 2-system tap switching (S73). If the predetermined time has not elapsed (No in S73), the switching command for the control device is not output.

  When a predetermined time has elapsed since the previous 1-system or 2-system tap switching (Yes in S73), the determination unit 313 outputs a tap switching command to the control device (transformer with LTC) 41 via the communication unit 315. Then, the tap switching operation unit 412 starts the tap switching operation of the transformer with LTC (first system) 411 and the transformer with LTC (second system) 412 (S83).

  Thereafter, the tap switching number integrating unit 213 integrates the 1st and 2nd LTC tap switching times, and the display unit 112 displays them (S93). Accumulation / display of the number of tap switching is not necessarily required for the system.

  As described above, even if the tap switching operation by the operator is performed, the switching command to the control device is not output unless various conditions (S21 to S73) are met.

(effect)
Even if the tap switching operation is performed by the operator, if various conditions are not met, the switching command to the control device is not output, so the tap switching operation cannot be performed continuously. The risk of transformer failure can be reduced. Further, the remote operator can confirm that the LTC tap switching operation is normally performed.

  The determination unit 313 for determining whether to output a switching command to the control device (S33 to S73) is located in the control slave station 31 in FIG. 2, but is in the control master station 21 or the operation monitoring terminal 11. May be.

  This embodiment can be applied to all system configurations in which a control master station and a plurality of or single control slave stations are connected by transmission, and is not limited by the number of devices or the type of transmission. Absent.

(Second Embodiment)
(Constitution)
FIG. 7 is an apparatus configuration diagram including the monitoring control system 2 according to the second embodiment.

  The difference between FIG. 1 which is the device configuration diagram of the first embodiment and FIG. 7 which is the device configuration diagram of the second embodiment is that an LTC control dedicated operation terminal 51 and an LTC control dedicated controller 61 are added. Yes, except for the LTC control dedicated operation terminal 51 and the LTC control dedicated controller 61, the second embodiment is the same as the first embodiment.

  The LTC control dedicated operation terminal 51 and the LTC control dedicated controller 61 are devices dedicated to LTC control, and are installed in the vicinity of the control device (transformer with LTC) 41 so that a tap switching operation can be performed.

  The operation monitoring terminal 11, the control master station 21, and the control slave station 31, which are terminals that perform the tap switching operation in the first embodiment, are generally installed in a place away from the control device (transformer with LTC) 41, Enable tap switching from a distance.

  In the vicinity of the control device (transformer with LTC) 41, it is selectively used whether to operate from a distance or directly. “Operating from a distance” means performing a tap switching operation from the operation monitoring terminal 11. Direct operation means performing a tap switching operation from the LTC control dedicated operation terminal 51. The switch for switching the operation place is installed in the vicinity of the control device (transformer with LTC) 41.

  Here, the connection to the control device (transformer with LTC) 41 is not only connected from the control slave station 31 to the control device (transformer with LTC) 41 by a contact as shown in FIG. 61 is connected to the control device (transformer with LTC) 41 through a contact.

  FIG. 8 is a diagram showing a functional configuration of the LTC control dedicated operation terminal 51. It is assumed that the LTC control dedicated operation terminal 51 has the same function as the operation monitoring terminal 11. The same parts as those in the functional configuration of the operation monitoring terminal 11 in FIG.

  The function of the second operation unit 116 is the same as that of the operation unit 113.

  FIG. 9 is a diagram illustrating a functional configuration of the LTC control dedicated controller 61. It is assumed that the LTC control dedicated controller 61 has the functions of the control master station 21 and the control slave station 31. The same components as those in the functional configuration of the control master station 21 in FIG. 3 and the functional configuration of the control slave station 31 in FIG.

  The function of the second determination unit 316 is the same as that of the determination unit 313.

(Function)
FIG. 10 is a flowchart of the tap switching operation.

  The difference between FIG. 6 which is the flowchart of the tap switching operation of the first embodiment and FIG. 10 which is the flowchart of the tap switching operation of the second embodiment is that S111 to S124 are added. Since it is the same as 1st Embodiment, the same code | symbol is attached | subjected to the same step and detailed description is abbreviate | omitted.

  In S111 to S124, whether the 1-system tap switching operation and the 2-system tap switching operation were each performed on the operation monitoring terminal 11 (hereinafter referred to as “distant”) or the LTC control dedicated operation terminal 51 (hereinafter referred to as “direct”). It is a step to judge.

  When the 1-system tap switching operation is performed in “far” (S111), it is determined whether the operation place is far (S113). If far away (Yes in S113), the “far” state is identified.

  Similarly, when the 1-system tap switching operation is performed “directly” (S112), it is determined whether the operation location is direct (S114). In the case of direct (Yes in S114), the “direct” state is identified.

  Similarly, when the 2 system tap switching operation is performed in “far” (S121), it is determined whether the operation place is far (S123). If far away (Yes in S123), the “far” state is identified.

  Similarly, when the 2-system tap switching operation is performed “directly” (S122), it is determined whether the operation location is direct (S124). In the case of direct (Yes in S124), the “direct” state is identified.

  When it is determined that the operation location is different in each case (No in S113, No in S114, No in S123, No in S124), a switching command for the control device is not output.

  After identifying the “far-direct” state as described above, in the case of “direct”, output from the LTC control dedicated operation terminal 51 is enabled and output from the control slave station 31 is blocked. In the case of “far”, the output from the operation monitoring terminal 11 is enabled and the output from the LTC control dedicated controller 61 is blocked.

  If any of the operation monitoring terminal 11, the control master station 21, or the control slave station 31 breaks down, for example, the LTC control dedicated controller 61 detects this and detects the operation location from “far” to “directly”. It shall be automatically switched to.

  On the other hand, when any trouble occurs, for example, when either the LTC control dedicated operation terminal 51 or the LTC control dedicated controller 61 breaks down, the control slave station 31 detects this and changes the operation location from “direct” to “far”. Shall be automatically switched to.

(effect)
By adding the LTC control dedicated operation terminal 51 and the LTC control dedicated controller 61, the tap switching operation can be performed in the vicinity of the control device (transformer with LTC) 41 while visually checking the operation of the device. Even in such a case, if various conditions are not met, the switching command to the control device is not output, so that it is possible to reduce the risk of failure of the LTC transformer due to continuous operation. In addition, even when a problem occurs in any of the devices, the operation can be continued using a sound device.

  Note that the determination unit 313 for determining whether to output a switching command to the control device (S33 to S73, S113, S114, S123, S124) is a control slave station 31 or an LTC control dedicated controller as shown in FIG. 61, or may be in any one of the LTC control dedicated operation terminal 51, the control master station 21, and the operation monitoring terminal 11.

  This embodiment can be applied to all system configurations in which a control master station and a plurality of or single control slave stations are connected by transmission, and is not limited by the number of devices or the type of transmission. Absent.

(Third embodiment)
(Constitution)
A system for displaying whether or not a tap operation is possible on an LTC tap switching operation display screen is shown. The layout and functional configuration including the determination unit 313 are the same as those in the second embodiment.

(Function)
FIG. 11 is a flowchart of the tap changeable display.

  The difference between FIG. 10 that is the flowchart of the tap switching operation of the second embodiment and FIG. 11 that is the flowchart of the tap switching operation display is that S115, S116, S125, and S126 are added. Since it is the same as 1st Embodiment, the same code | symbol is attached | subjected to the same step and detailed description is abbreviate | omitted.

  When the 1-system tap switching operation is performed, the switching command to the control device is not output in all cases (No in S113, No in S114, No in S41, No in S51, No in S61, No in S71, S33 No, S43, No in S53, No in S63, No in S73), and displays that the 1-system LTC tap operation is prohibited on the display unit of the operation monitoring terminal 11 or the LTC control dedicated operation terminal 51 (S115). ).

  On the other hand, when the tap switching operation is started when the 1-system tap switching operation is performed (Yes in S71, Yes in S73), the 1-system LTC tap is displayed on the display unit of the operation monitoring terminal 11 or the LTC control dedicated operation terminal 51. It is displayed that operation is possible (S116).

  Similarly, when a 2-system tap switching operation is performed, in all cases where a switching command to the control device is not output (No in S123, No in S124, No in S42, No in S52, No in S62, No in S72) No, No in S33, No in S43, No in S53, No in S63, No in S73), indicating that the 2-system LTC tap operation is prohibited on the display unit of the operation monitoring terminal 11 or the LTC control dedicated operation terminal 51 (S125).

  On the other hand, when the tap switching operation is started when the two-system tap switching operation is performed (Yes in S72, Yes in S73), the two-system LTC tap is displayed on the display unit of the operation monitoring terminal 11 or the LTC control dedicated operation terminal 51. It is displayed that operation is possible (S126).

  FIG. 12 is a diagram showing a 1-system LTC tap switching operation display screen. Single parentheses indicate displays, and double parentheses indicate switches.

  The independent 71, the 1-system parallel main 72, and the 2-system parallel main 73 perform mode switching between “single”, “1-system parallel main”, and “2-system parallel main”. The mode is a TR operation mode (S21) shown in the flowcharts of FIGS. 6, 10, and 11, and is selected in advance.

  The manual 74 displays “automatic” and “manual” modes. In the case of the 1-system control mode manual (Yes in S41, Yes in S43) shown in the flowcharts of FIGS. 6, 10, and 11, “manual” is displayed. In other cases, “automatic” is displayed. However, this display function is not necessarily required for the system.

  The far field 75 displays the “far” and “direct” modes. When the 1st-system tap switching operation place shown in the flowcharts of FIGS. 10 and 11 is far (Yes in S113), “far” is displayed. If the 1-system tap switching operation place is direct (Yes in S114), “direct” is displayed. However, this display function is not necessarily required for the system.

  The tap match 76 indicates that the taps of the system 1 transformer and the system 2 transformer match. When the taps of the system 1 transformer and the system 2 transformer match with each other as shown in the flowcharts of FIGS. 6, 10, and 11 (Yes in S <b> 33), “tap match” is displayed. However, this display function is not necessarily required for the system.

  During switching 77, “switching” is displayed when the tap of the 1-system LTC is switching (No in S51, No in S53). However, this display function is not necessarily required for the system.

  The “tap step-up / step-down operation” 78 is a switch for performing step-up or step-down operation of the 1-system LTC tap. When this switch is pressed only in a state where the tap operation available 79 is displayed, the system 1 LTC tap is boosted or lowered.

  The tap operation possible 79 displays “tap operation possible” or “tap operation prohibition”. When the 1-system LTC tap operation is possible (Yes in S71, Yes in S73), “Tap operation available” is displayed. When the 1-system control mode is automatic (No in S41), tap switching is in progress (No in S51), traffic congestion is occurring (No in S61), or immediately after tap switching (No in S71), “tap operation” “Prohibited” is displayed.

  The 1-system LTC operation display screen has been described above, but the 2-system LTC operation display screen has the same screen configuration and display contents.

(effect)
It is possible to know whether or not the user can perform a tap operation by displaying the prohibition of tap operation or the availability of a tap operation. By displaying the prohibition of tap operation, it is possible to make it difficult for the user to perform the continuous operation and to further reduce the risk of LTC failure due to the continuous operation.

  In addition, as described in the first and second embodiments, even if a continuous operation is performed when the display of the tap operation prohibition is displayed, a switching command to the control device is required if various conditions are not met. Is a mechanism in which continuous tap switching operation cannot be performed due to an interlock that is not output.

  Note that the determination unit 313 that determines whether or not the tap switching operation can be performed (S33 to S73, S113, S114, S123, and S124) is performed by the control slave station 31 and the LTC control as illustrated in FIGS. It may be in the dedicated controller 61, or may be in any of the LTC control dedicated operation terminal 51, the control master station 21, and the operation monitoring terminal 11.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 1 Monitoring control system which concerns on 1st Embodiment 2 Monitoring control system which concerns on 2nd Embodiment 11 Operation monitoring terminal 111 Operation monitoring screen 112 Display part 113 Operation part 116 2nd operation part 114 History preservation | save / print function 21 Control Master station 212 Signal processing / process management unit 213 Tap switching frequency integration unit 31 Control slave station 1
313 Judgment Unit 316 Second Judgment Unit 32 Control Slave Station 2
33 Control slave station 3
41 Control equipment (LTC transformer)
414 Tap switching operation unit 42 Control device 2
43 Control equipment 3
51 Dedicated operation terminal for LTC control 61 Dedicated controller for LTC control

Claims (10)

Obtaining the tap state information of the transformer with a load tap changer via communication, and a determination unit for judging whether the transformer with a load tap changer can perform a tap change operation,
When the load-on-tap transformer with a tap changer can perform a tap change operation, it indicates that the tap operation is possible, or when the load-on tap changer with a tap changer cannot perform a tap change operation, And a display unit that displays that the tap operation is prohibited.   The determination unit determines that the on-load transformer with a tap changer cannot perform a tap change operation when the tap state information is either during a tap change, during a tap change jam or immediately after a tap change. The monitoring control system according to claim 1. A tap switching frequency integration unit that integrates the tap switching frequency of the transformer with a tap changer at the time of loading,
The monitoring control system according to claim 1, wherein the display unit displays the number of tap switching times. An operation unit that accepts an operation input of a transformer with a tap changer during load,
The state of the transformer with a load tap changer is acquired via communication, and it is determined whether the transformer with a load tap changer can perform a tap change operation. The transformer with a load tap changer is In a situation where a tap switching operation can be performed, a determination unit that outputs a switching command to the on-load tap changer based on an operation input input to the operation unit;
A monitoring control system comprising: A second operation unit for receiving an operation input of the transformer with a load tap changer;
The state of the transformer with a load tap changer is acquired via communication, and it is determined whether the transformer with a load tap changer can perform a tap change operation. The transformer with a load tap changer is In a situation where a tap switching operation can be performed, the on-load tap switching includes a second determination unit that outputs a switching command to the on-load tap switch based on an operation input input to the second operation unit. The supervisory control system of Claim 4 provided with a device only for a transformer with a transformer.   If the determination unit determines that the second determination unit is inconvenient to operate the on-load transformer with tap changer based on the state information of the second determination unit, the operation is The monitoring control system according to claim 4 or 5, wherein the monitoring control system is automatically switched to the operation unit.   The second determination unit, when it is determined that the determination unit is inconvenient to operate the on-load tap changer transformer based on the state information of the determination unit, the operation is the second The monitoring control system according to claim 4 or 5, wherein the monitoring control system is automatically switched to the operation unit.   The determination unit or the second determination unit can perform the tap switching operation when the device is automatically controlled when used in combination with a device that automatically performs tap switching of the transformer with a load tap changer. The monitoring control system according to claim 4 or 5, wherein it is determined that there is no situation, and an operation input input to the operation unit or the second operation unit is invalidated. The determination unit or the second determination unit, when performing the tap switching of the on-load tap switch of the two-unit configuration at the same time, when the tap position of the on-load tap switch of the two-unit configuration is inconsistent,
The monitoring control system according to claim 4 or 5, wherein it is determined that the tap switching operation cannot be performed, and an operation input input to the operation unit or the second operation unit is invalidated. Based on the determination result of determining whether the transformer with a load tap changer can perform a tap switching operation according to the state of the transformer with a load tap changer, the transformer with a load tap changer performs a tap switching operation. An operation monitoring terminal having a display unit that displays that a tap operation is possible in a situation where a tap operation is possible, or a tap operation is prohibited in a situation where the transformer with a load tap changer cannot perform a tap change operation.

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