JP6543150B2 - Supervisory control system and operation monitoring terminal - Google Patents

Description

  Embodiments of the present invention relate to a monitoring control system and an operation monitoring terminal.

  Conventionally, when remotely controlling the tap of the on-load tap changer (hereinafter referred to as "LTC") installed in the transformer, the operator can change the tap switching operation by the operator and the time difference when the tap is actually switched. It was not possible to correctly recognize the position and condition of the tap. Therefore, when the operator continuously performs the tap switching operation, there is an inherent risk that the switching switch is burdened and the LTC is broken.

JP 2003-87974 A

  The problem to be solved by the embodiments of the present invention is to provide a monitoring control system and an operation monitoring terminal for displaying on the operation monitoring screen whether the tap switching operation is possible to the operator who performs the tap switching operation from remote. It is to be.

The monitoring control system according to the embodiment includes an operation unit that receives an operation input of the on- load tap changer with transformer, tap status information of the on- load tap changer with transformer acquired via communication , and the operation unit. based on the operation input performed a determination unit for determining whether conditions that allows the tap changer operation, wherein the load tap predetermined time from the operation input to the operation portion is passed changer with transformer tap switching operation And a display unit that displays that tap operation is possible in the case of the status, or displays that tap operation is prohibited when the on-load tap changer transformer can not perform tap switching operation. .

It is an apparatus block diagram containing the surveillance control system concerning a 1st 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 substation 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 flow chart which shows tap change operation of a 1st embodiment of the present invention. It is an apparatus block diagram containing the monitoring control system which concerns on the 2nd Embodiment of this invention. It is a figure which shows the function structure of the control terminal only for LTC control which concerns on the 2nd Embodiment of this invention. FIG. 7 is a diagram showing a functional configuration of an LTC control dedicated controller according to a second embodiment of the present invention. It is a flow chart which shows tap change operation concerning a 2nd embodiment of the present invention. It is a flowchart of the tap change operation possible display which concerns on the 3rd Embodiment of this invention. It is a figure which shows 1 system 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 a device configuration diagram including the 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, which are connected by communication lines.

  The operation monitoring terminal 11 is a terminal that receives an LTC operation input by the 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 information.

  The control slave station 31 monitors and controls the control device (transformer with LTC) 41. The transformer with LTC is a transformer with on-load tap changer. The control slave station 32 and the control slave station 33 perform supervisory control of equipment not associated with the LTC.

  The communication line connecting the operation monitoring terminal 11 and the control master station 21 is transmission, the communication line connecting the control master station 21 and the control slave stations 31 to 33 is transmission, and the control slave stations 31 to 33 and the control devices 41 to 43 are The communication lines connecting each are contact points.

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

  The operation monitoring terminal 11 receives the LTC tap position information, tap switching in-progress information, tap operation availability information, failure information, etc. for the operator, and an operation for receiving an LTC tap switching operation command by the operator. And a communication unit 115 for transmitting an LTC tap switching operation command to the control master station 21. Also, 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.

  It also has a history storage / printing function 114 for storing and printing the switching history of the LTC tap position. The history storage and printing function 114 is not necessarily required for the system.

  FIG. 3 is a diagram showing a functional configuration of the control master station 21. As shown in FIG.

  The control master station 21 performs signal processing on the LTC tap switching operation command to determine which of the control slave stations 31 to 33 the signal processing / process management unit 212, and a command that is the result of the determination is a controller And a communication unit 214 with the control slave station to transmit to the station 31.

  Further, when the tap switching is performed on the control device side, the control master station 21 detects this via the control slave station, and adds it to the integrated value of the number of switching times stored internally, and the tap switching number integration unit 213 And a communication unit 211 with the monitoring terminal that transmits the integrated value to the operation monitoring terminal 11. The tap switching number integration unit 213 is not necessarily required for the system.

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

  In addition, the control slave station 31 acquires contact state conversion conversion unit 314 which performs transmission conversion of contact point information such as tap position and fault and transmits it to the control master station, tap state information such as tap position and fault, etc. It has the judgment part 313 which judges whether it is a possible situation. In the contact point transmission conversion unit 314, an analog signal such as a secondary voltage of a transformer is converted into a digital value and transmitted.

FIG. 5 is a diagram showing a functional configuration of control device (transformer with LTC) 41. As shown in FIG.
When the control device (transformer with LTC) 41 receives a contact signal from the control slave station, it operates a dedicated motor to perform tap switching operation with the tap switching operation unit 414, and the tap position information after change as a contact It has an equipment operation contact conversion unit 415 for converting into a signal, and a communication unit 413 for transmitting the contact signal to the control slave station.

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

  The control device (LTC with transformer) 41 includes a 1-system LTC with a transformer 411 and a 2-system LTC with a transformer 412, and the tap switching operation is “1 system alone”, “2 system alone” or “parallel” It can do. In the case of “in parallel”, when the taps of the 1-system LTC with transformer 411 and the 2-system LTC with transformer 412 match, both tap switching operations are performed by one of the tap switching operations.

(1 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 "only", the determination unit 313 determines whether the 1-system control mode is manual (S41). In the case of the automatic control mode, the tap switching operation is performed after switching to the manual control mode. The automatic control mode refers to, for example, 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 the device that performs automatic switching. When the 1-system control mode is not manual (No in S41), a switching command to the control device is not output. That is, the 1-system tap switching operation does not occur.

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

  If system 1 tap switching is not in progress (Yes in S51), the determination unit 313 determines whether system 1 tap switching is in heavy traffic (S61). When the tap switching is in congestion, it means that the received tap switching operation is not completed. When the 1-system tap switching is in a traffic jam (No in S61), a switching command to the control device is not output.

  If the 1-system tap switching is not in heavy traffic (Yes in S61), the determining unit 313 determines whether a predetermined time has elapsed since the previous 1-system tap switching (S71). The setting of the fixed time can be selected by the user. When a predetermined time has not elapsed from the previous 1-system tap switching (No in S71), a switching command to the control device is not output.

  If a predetermined time has elapsed since the previous 1-system tap switching (Yes in S71), the determining 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-attached transformer 411 (S81).

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

(2 system independent 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.

  If the TR operation mode (S22) is "only", the determination unit 313 determines whether the 2-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 2 system control mode is manual (Yes in S42), the determination unit 313 determines whether 2 system tap switching is in progress (S52). When the 2-system tap switching is in progress (No in S52), a switching command to the control device is not output.

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

  If the 2-system tap switching is not in heavy traffic (Yes in S62), the determination unit 313 determines whether a predetermined time has elapsed from the previous 2-system tap switching (S72). When the predetermined time has not elapsed (No in S72), the switching instruction to the control device is not output.

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

  Thereafter, the tap switching number integration unit 213 integrates the number of 2-system LTC tap switching numbers and causes the display unit 112 to display the number (S92). Integration and display of the number of tap changes 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 1-system transformer and the 2-system transformer coincide with each other.

  When the parallel tap switching operation is performed, 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), TR operation mode (S22) is "2 system parallel main".

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

  If the taps match (Yes in S33), the determination unit 313 determines whether the 1-system or 2-system control mode is manual (S43). If either the 1-system or 2-system control mode is not manual (No in S43), the switching command to 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 not being switched (S53). When one of the 1-system and 2-system taps is being switched (No in S53), the switching instruction to the control device is not output.

  If neither of the 1-system and 2-system taps is in switching (Yes in S53), the determination unit 313 determines whether the 1-system or 2-system tap switching is not in congestion (S63). If either one of the switching of the 1-system and 2-system taps is in congestion (No in S63), the switching instruction to the control device is not output.

  When neither system 1 or system 2 switching is in traffic jam (Yes in S63), the determination unit 313 determines whether a predetermined time has elapsed since the previous 1 system or 2 system tap switching (S73). When the predetermined time has not elapsed (No in S73), the switching command to 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), determination unit 313 outputs a tap switching command to control device (transformer with LTC) 41 via communication unit 315. The tap switching operation unit 412 starts tap switching operation of the transformer with LTC (system 1) 411 and the transformer with LTC (system 2) 412 (S 83).

  Thereafter, the tap switching number integration unit 213 integrates the number of times of 1-system and 2-system LTC tap switching, and causes the display unit 112 to display the number (S93). Integration and display of the number of tap changes is not necessarily required for the system.

  As described above, even if the operator performs the tap switching operation, the switching instruction 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, the switching command to the control device is not output unless various conditions are met. Since the tap switching operation can not be performed continuously by the interlock, the LTC with continuous operation can not be performed. It is possible to reduce the risk of transformer failure. Also, 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 in the control slave station 31 in FIG. 2 but is not in the control master station 21 or the operation monitoring terminal 11. May be

  Note that this embodiment is applicable 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 and the type of transmission. Absent.

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

  The difference between FIG. 1, which is the device configuration of the first embodiment, and FIG. 7, which is the device configuration of the second embodiment, differs in that an LTC control dedicated operation terminal 51 and an LTC control dedicated controller 61 are added. Since the components other than the LTC control dedicated operation terminal 51 and the LTC control dedicated controller 61 are the same as those of the first embodiment, the same reference numerals are given to the same parts and detailed description will be omitted.

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

  In the first embodiment, the operation monitoring terminal 11, which is a terminal that performs tap switching operation, the control master station 21 and the control slave station 31 are generally installed at a place away from the control device (transformer with LTC) 41, Enables tap switching operation from a distance.

  In the vicinity of the control device (transformer with LTC) 41, it is used properly whether to operate from a distance or operate directly. To operate from a distance means to perform tap switching operation from the operation monitoring terminal 11. Direct operation means performing tap switching operation from the LTC control dedicated operation terminal 51. A switch for operation location switching is installed near the control device (transformer with LTC) 41.

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

  FIG. 8 is a diagram showing a functional configuration of the LTC control dedicated operation terminal 51. As shown in FIG. 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 showing a functional configuration of the LTC control dedicated controller 61. As shown in FIG. 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 of the control master station 21 of FIG. 3 and the functional configuration of the control slave station 31 of FIG. 4 are designated by the same reference numerals and their detailed description will be omitted.

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

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

  6 that is a flowchart of the tap switching operation according to the first embodiment and FIG. 10 that is a flowchart of the tap switching operation according to the second embodiment are different in that S111 to S124 are added. The same steps as in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  In S111 to S124, whether 1-system tap switching operation or 2-system tap switching operation is performed by the operation monitoring terminal 11 (hereinafter referred to as "far"), or is it performed by the LTC control dedicated operation terminal 51 (hereinafter "directly" Step).

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

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

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

  Similarly, when the 2 system tap switching operation is performed "directly" (S122), it is determined whether the operation place is direct (S124). In the direct case (Yes in S124), the "direct" state is identified.

  When it is determined that the operation place is different in each case (No in S113, No in S114, No in S123, No in S124), the switching instruction to the control device is not output.

  As described above, after “remote-direct” state is identified, 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 problem such as failure of any of the operation monitoring terminal 11, control master station 21 and control slave station 31 occurs, the LTC control-dedicated controller 61 detects this, and the operation place is "directly" Automatically switch to

  On the other hand, if any problem occurs such as failure of either the LTC control dedicated operation terminal 51 or the LTC control dedicated controller 61, the control slave station 31 detects this and the operation place is from "direct" to "far" It shall be switched to automatically.

(effect)
By adding the LTC control dedicated operation terminal 51 and the LTC control dedicated controller 61, the tap switching operation can be performed while observing the operation of the device near the control device (transformer with LTC) 41. Even in that case, the switching command to the control device is not output unless various conditions are met, so that it is possible to reduce the risk of the transformer with LTC failure due to the continuous operation. And, even if any of the devices suffers, the operation can be continued using a healthy device.

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

  Note that this embodiment is applicable 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 and the type of transmission. Absent.

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

(Action)
FIG. 11 is a flowchart of the tap change operation enable display.

  FIG. 10, which is a flowchart of the tap switching operation of the second embodiment, and FIG. 11, which is a flowchart of the tap switchable display, are different in that S115, S116, S125, and S126 are added. The same steps as in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  When 1 system tap switching operation is performed, the switching instruction 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, S53 No, S63 No, S73 No) and display on the display unit of the operation monitoring terminal 11 or the LTC control dedicated operation terminal 51 that 1-system LTC tap operation is prohibited (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 the operation is possible (S116).

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

  On the other hand, when the tap switching operation is started when the 2-system tap switching operation is performed (Yes in S72, Yes in S73), the 2-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 brackets indicate display, double brackets indicate switches.

  The single 71, the 1-system parallel main 72, and the 2-system parallel main 73 perform mode switching of "single", "1-system parallel main", and "2-system parallel main". The mode is selected in advance in the TR operation mode (S21) shown in the flowcharts of FIG. 6, FIG. 10, and FIG.

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

  The distant 75 displays the "far" and "direct" modes. If the 1-system tap switching operation place is far (Yes in S113) shown in the flowcharts of FIGS. 10 and 11, “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 first and second transformers match. When the taps of the system 1 transformer and the system 2 transformer match as shown in the flowcharts of FIGS. 6, 10, and 11 (Yes in S33), “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 being switched (No in S51, No in S53). However, this display function is not necessarily required for the system.

  “Tap step-up / step-down operation” 78 is a switch for performing step-up or step-down operation of the 1-system LTC tap. Only when the indication that tap operation is possible 79 is shown, pressing this switch causes the 1-system LTC tap to operate to step up or down.

  The tap operation enable 79 displays "tap operation available" or "tap operation prohibited". When 1-system LTC tap operation is possible (Yes in S71, Yes in S73), "Tap operation is possible" is displayed. When 1 system control mode is automatic (No in S41), during tap switching (No in S51), during congestion (No in S61), or immediately after tap switching (No in S71), tap operation can not be performed. "Prohibited" is displayed.

  Although the 1-system LTC operation display screen has been described above, the 2-system LTC operation display screen has the same screen configuration and display content.

(effect)
By displaying the tap operation prohibition or the tap operation possibility, it is possible to know whether the user can perform the tap operation or not. The display of the tap operation prohibition makes it difficult for the user to perform the continuous operation, and it is possible to further reduce the risk of the LTC failure due to the continuous operation.

  As described in the first and second embodiments, even if the continuous operation is performed when the display of the tap operation prohibition is displayed, the switching instruction to the control device if various conditions are not met. Is a mechanism in which continuous tap switching operation can not be performed by the interlock which is not output.

  The determination unit 313 that determines whether the tap switching operation can be performed is displayed (S33 to S73, S113, S114, S123, and S124) as shown in FIG. 4 and FIG. 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.

  While certain embodiments of the present invention have been described, these embodiments have been presented by way of example only, and are not intended to limit the scope of the invention. These embodiments can be implemented in other various forms, and various omissions, replacements, and modifications can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the invention described in the claims and the equivalents thereof as well as included in the scope and the gist of the invention.

1 Monitoring control system according to the first embodiment 2 Monitoring control system according to the second embodiment 11 operation monitoring terminal 111 operation monitoring screen 112 display unit 113 operation unit 116 second operation unit 114 history storage / printing function 21 control Master station 212 Signal processing / process management unit 213 Tap switching number accumulating unit 31 Control slave station 1
313 determination unit 316 second determination unit 32 control slave station 2
33 Control slave station 3
41 Control equipment (transformer with LTC)
414 tap switching operation unit 42 control device 2
43 Control device 3
51 dedicated control terminal for LTC control 61 dedicated controller for LTC control

Claims (11)

An operation unit that receives an operation input of a transformer with a tap changer during load;
A determination unit that determines whether a tap switching operation can be performed based on tap state information of the on-load tap changer with transformer acquired via communication and an operation input to the operation unit;
When a certain time has elapsed since the operation input to the operation unit and the transformer with on-load tap changer can perform tap switching operation, it indicates that tap operation is possible, or the on-load tap switching The monitoring control system provided with the display part which displays that tap operation prohibition is carried out, when it is the condition which can not perform tap change operation with a transformer with a device.   The determination unit determines that the on-load tap changer-equipped transformer can not perform tap switching operation when the tap status information indicates either tap switching or tap switching congestion is occurring. Description supervisory control system. A tap switching number integration unit that integrates the tap switching number of the load-time tap transformer with load,
The monitoring control system according to claim 1, wherein the display unit displays the tap switching number. An operation unit that receives an operation input of a transformer with a tap changer during load;
A certain time has passed since the operation input to the operation unit based on the state of the transformer with on-load tap changer acquired via communication and the operation input to the operation unit, and the on-load tap changer It is determined whether the attached transformer can perform tap switching operation, and in the case where the on-load tap changer transformer can perform tap switching operation, the on-load tap based on the operation input input to the operation unit A determination unit that outputs a switching command to the switch;
A supervisory control system comprising: A second operation unit that receives an operation input of the on-load tap changer-equipped transformer;
The state of the transformer with on-load tap changer is acquired through communication, and it is determined whether the transformer with on-load tap changer can perform tap switching operation, and the transformer with on-load tap changer is In the situation where 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 changer based on the operation input input to the second operation unit. The supervisory control system according to claim 4, further comprising a transformer-dedicated transformer dedicated device.   When the determination unit determines that the second determination unit is inconvenient to operate the on-load tap changer based on the state information of the second determination unit, the operation is performed according to the operation. The supervisory control system according to claim 5, wherein the control unit automatically switches to the operation unit.   When the second determination unit determines that the operation of the on-load tap changer transformer is inconvenient on the basis of the state information of the determination unit, the second determination unit performs the second operation. The supervisory control system according to claim 5, wherein the control unit automatically switches to the operation unit.   When the determination unit or the second determination unit is used in combination with a device that automatically performs tap switching of the on-load tap changer, the tap switching operation can be performed when the device is automatically controlled. The monitoring control system according to claim 5, wherein the monitoring control system determines that there is no situation, and invalidates an operation input input to the operation unit or the second operation unit.   When the determination unit or the second determination unit simultaneously performs tap switching of the two on-load tap changers, if the tap positions of the two on-load tap changers do not match, The monitoring control system according to claim 5, wherein it is determined that the tap switching operation can not be performed, and the operation input input to the operation unit or the second operation unit is invalidated. An operation unit that receives an operation input of a transformer with a tap changer during load;
A certain time has elapsed from the operation input to the operation unit by the state of the load-time tap changer with transformer and the operation input to the operation unit, and the load-time transformer with tap changer performs tap switching operation If the transformer with on-load tap changer can perform tap switching operation based on the determination result of whether it is possible to perform tap switching, the on-load tap switchable transformer may be tap-operated. The operation monitoring terminal which has a display part which displays that it is the tap operation prohibition in the case where the operation can not be performed. An operation unit that receives an operation input of a transformer with a tap changer during load;
A certain time has elapsed from the operation input to the operation unit by the state of the load-time tap changer with transformer and the operation input to the operation unit, and the load-time transformer with tap changer performs tap switching operation When the transformer with on-load tap changer can perform tap switching operation on the basis of the judgment result of whether it is possible to perform the on-off state, switching to the on-load tap changer based on the operation input inputted to the operation unit Operation monitoring terminal that outputs commands.

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