Circuit breaker operation support system, communication terminal, circuit breaker operation limiting device, circuit breaker operation support method and program

Abstract

To easily and securely prevent erroneous turn-on / erroneous turn-off of a circuit breaker even if a plurality of circuit breakers which are centrally provided in a control panel and a distribution board of an electrical facility are targeted and an external power source is turned off.SOLUTION: A circuit breaker operation limitation device 30An operating by a battery power source for a circuit breaker An is installed by registering identification information An corresponding to the circuit breaker An. A work terminal 10 allows a display part to display work process confirmation data corresponding to a work process of a control panel A, transmits an operation lock signal including identification information An of all the circuit breakers An to each circuit breaker operation limitation device 30An and once limits operation of a switch lever SW of all the circuit breakers An. The work terminal 10 transmits a lighting signal including identification information An of the circuit breaker An and an operation lock release signal to the limitation device 30An when there is work of opening / closing (turn-on / turn-off) of the circuit breaker An in a work content, lights a display light 32, informs a worker H of the circuit breaker An being a work target and releases limitation of the switch lever SW to enable operation at every work process.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] An embodiment of the present invention relates to a circuit breaker operation support system, a communication terminal, a circuit breaker operation limiting device, a circuit breaker operation support method, and a program. [Background technology]

[0002] Generally, when switching or performing maintenance work on electrical equipment, the power to some or all of the equipment to be worked on is cut off before the work can begin. Workers check a work schedule or other document that describes the work procedures and then turn on and off the circuit breakers that correspond to the equipment to be worked on.

[0003] When performing such work, if a circuit breaker that is not the target of the work is accidentally opened or closed, it could have a negative impact on the equipment and the workers.

[0004] Conventionally, in order to prevent mistakes in the shut-off and -on operations of the control power supply during regular maintenance of plant equipment, a control power supply switching support device has been devised that prevents erroneous shut-off and -on operations by inputting the shut-off and -on sequence into a control device in advance and displaying the shut-off and -on sequence by lighting an indicator light provided on the circuit breaker (see, for example, Patent Document 1).

[0005] Furthermore, a technology has been devised for a switching device that performs uninterruptible switching between different power sources in a distribution line having a sectional switch, which has a wireless transmission device and releases the closing interlock of a temporary switch to perform synchronized closing (see, for example, Patent Document 2). [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Publication No. 3-86020 [Patent Document 2] Japanese Patent Application Laid-Open No. 2006-33921 Summary of the Invention [Problem to be solved by the invention]

[0007] In conventional control power supply switching support devices, the indicator light on the circuit breaker cannot be turned on when the external power supply is cut off, making the switching support device unusable. Furthermore, even if the indicator light is turned on, it is not possible to physically prevent the circuit breaker from being accidentally turned off or on.

[0008] Conventional uninterruptible power switching devices between different power sources are designed to perform uninterruptible power switching between different power sources on distribution lines that have sectionalizing switches, and cannot be used to target multiple circuit breakers that are centrally installed in control panels or distribution panels for electrical equipment.

[0009] The problem that the present invention aims to solve is to provide a circuit breaker operation support system, communication terminal, circuit breaker operation limiting device, circuit breaker operation support method, and program that can easily and reliably prevent erroneous circuit breaker shutoff / incorrect circuit breaker shutoff, even when multiple circuit breakers are concentrated in a control panel or distribution panel of electrical equipment, or when an external power source is cut off. [Means for solving the problem]

[0010] The circuit breaker operation support system according to the embodiment includes: A circuit breaker operation support system including a communication terminal operated by an operator and a circuit breaker operation limiting device provided in a circuit breaker and having a communication function with the communication terminal, The circuit breaker operation limiting device is an indicator light that lights up in response to a lighting signal transmitted from the communication terminal and that turns off in response to a lighting-off signal; a limiting member that moves between a first position that limits the movement of the opening / closing lever of the circuit breaker and a second position that does not limit the movement; a lever limiting unit that moves the limiting member from the first position to the second position in response to a restriction release signal transmitted from the communication terminal, and moves the limiting member from the second position to the first position in response to a restriction signal transmitted from the communication terminal, The communication terminal A display unit; a work process data storage unit that stores work process data that records the work content of opening or closing the circuit breaker as the work content of at least one work process among a plurality of work processes performed by the worker; a confirmation data display unit that displays on the display unit work process confirmation data, to which a confirmation operation unit that is operated by the worker is added for each work process recorded in the work process data; a work content determination unit that determines, for each work process recorded in the work process data, whether the work content is a work content for opening or closing the circuit breaker; a restriction release signal transmitting unit that transmits a lighting signal and a restriction release signal to the circuit breaker operation limiting device when the work content determining unit determines that the work content is to open or close the circuit breaker; and a restriction signal transmitting unit that transmits a light-off signal and a restriction signal to the circuit breaker operation restriction device when, after transmitting the light-on signal and the restriction release signal, the confirmation operation unit corresponding to the work process in the work process confirmation data that has been determined to be work content for turning off or turning on the circuit breaker is operated. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is an external view showing the overall configuration of a circuit breaker operation support system 1 according to an embodiment. [Figure 2] 1 is an external view showing the configuration of a circuit breaker operation limiting device 30A1 mounted on a circuit breaker 20A1 of a control panel 20 as a representative example. [Figure 3] 2 is an external view showing the configuration of a circuit breaker 20A that includes an integrated circuit breaker operation limiting device 30A. FIG. [Figure 4] FIG. 2 is a block diagram showing the configuration of an electronic circuit of an operation terminal (communication terminal) 10. [Figure 5] 10 is a diagram showing an example of work process data (12b) stored in a work process data storage area 12b of the work terminal 10. FIG. [Figure 6] 10 is a diagram showing an example of work process confirmation data (12c) stored in a work process confirmation data storage area 12c of the work terminal 10. FIG. [Figure 7]FIG. 3 is a block diagram showing the configuration of an electronic circuit of a circuit breaker operation limiting device 30A1. [Figure 8] 4 is a flowchart showing a circuit breaker operation support process executed by the work terminal 10 of the circuit breaker operation support system 1. [Figure 9] 10 is a diagram showing the operation of the circuit breaker operation limiting devices 30A1 to 30A7 in accordance with the circuit breaker operation support process of the work terminal 10. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, a circuit breaker operation support system, a communication terminal, a circuit breaker operation limiting device, a circuit breaker operation support method, and a program according to embodiments will be described with reference to the drawings.

[0013] <Configuration of circuit breaker operation support system 1> FIG. 1 is an external view showing the overall configuration of a circuit breaker operation support system 1 according to an embodiment.

[0014] The circuit breaker operation support system 1 of the embodiment includes a work terminal (communication terminal) 10 such as a tablet terminal operated by an on-site worker H, and circuit breaker operation limiting devices 30A1, 30A2, ... that are detachably attached to each of a plurality of circuit breakers 20A1, 20A2, ... provided on a control panel 20 or the like.

[0015] 1 has seven circuit breakers "A1" 20A1 to "A7" 20A7, and circuit breaker operation limiting devices 30A1 to 30A7 are attached to the circuit breakers "A1" 20A1 to "A7" 20A7, respectively. It goes without saying that the number of control panels 20 and circuit breakers 20An included in the work target and the number of circuit breaker operation limiting devices 30An prepared corresponding to the number of circuit breakers 20An are not limited to the configuration of the embodiment.

[0016] FIG. 2 is an external view showing the configuration of a circuit breaker operation limiting device 30A1 mounted on the circuit breaker 20A1 of the control panel 20 as a representative example.

[0017] Here, Figure 2(A) is a front view of the state in which the opening / closing lever SW of the circuit breaker 20A1 is operated to the OFF (shut) position and the operation of the opening / closing lever SW is physically restricted (locked) by the lock pin 31P of the lever lock section 31 of the circuit breaker operation limiting device 30A1, Figure 2(B) is a side view of Figure 2(A), Figure 2(C1) is a top view of Figure 2(A), and Figure 2(C2) is a top view of the state in which the restriction (lock) on the operation of the opening / closing lever SW by the lock pin 31P of the circuit breaker operation limiting device 30A1 has been released.

[0018] The circuit breaker operation limiting device 30A1 has a U-shaped housing (limiting device housing) that is attached from the front side to the box-shaped housing of the circuit breaker 20A1 so as to clamp both its left and right sides, and the limiting device housing is formed so that the opening and closing lever SW of the circuit breaker 20A1 is exposed on the front side, at least within its operating range.

[0019] The circuit breaker operation limiting device 30A1 is provided on its front side with, for example, a solenoid-type lever locking portion 31 that protrudes a lock pin 31P to a first position that crosses the operating range of the opening / closing lever SW of the circuit breaker 20A1, or retracts it to a second position that does not cross the operating range, a pin receiving portion 31R that receives the tip of the protruding lock pin 31P, and an indicator light 32 such as an LED.

[0020] When the lock pin 31P of the lever lock portion 31 is in the protruding state, the opening and closing operations of the opening / closing lever SW of the circuit breaker 20A1 are physically restricted and prevented.

[0021] The circuit breaker operation limiting device 30A1 also includes a built-in short-range wireless communication unit 33 such as Bluetooth (registered trademark) for short-range wireless communication BT with the work terminal 10.

[0022] The lever locking section 31 of the circuit breaker operation limiting device 30A1 protrudes the locking pin 31P in response to an operation locking signal transmitted from the work terminal 10 via short-range wireless communication BT, which signal includes identification information of the circuit breaker 20A1 to which the limiting device 30A1 is attached, and releases the protrusion of the locking pin 31P and retracts the locking pin 31P in response to an operation lock release signal.

[0023] The indicator light 32 of the circuit breaker operation limiting device 30A1 lights up in response to a lighting signal transmitted from the work terminal 10 via short-range wireless communication BT, which includes identification information of the circuit breaker 20A1 to which the limiting device 30A1 is attached, and turns off in response to a lighting-off signal.

[0024] FIG. 3 is an external view showing the configuration of a circuit breaker 20A that includes an integrated circuit breaker operation limiting device 30A.

[0025] Figure 2 shows a configuration in which the circuit breaker operation limiting device 30A1 is attached to the circuit breaker 20A1 as needed, but when a new circuit breaker 20A is provided, such as when a new control panel 20 is installed, the circuit breaker operation limiting device 30A may be integrated into the new circuit breaker 20A, as shown in Figure 3.

[0026] <Configuration of Work Terminal (Communication Terminal) 10> FIG. 4 is a block diagram showing the configuration of the electronic circuit of the work terminal (communication terminal) 10. As shown in FIG.

[0027] The work terminal 10 includes a control unit (CPU: Central Processing Unit) 11.

[0028] The control unit 11 is connected to a storage unit 12, a recording medium reading unit 13, a communication unit 14, a touch panel display unit 15, and a short-range wireless communication unit 16 via a system and a data bus.

[0029] The control unit 11 controls the operation of each part of the circuit in accordance with a circuit breaker operation support program 12a that is pre-stored in a storage unit 12 such as a flash memory, or a circuit breaker operation support program 12a that is read from an external storage medium such as a memory card via a storage medium reading unit 13 from the storage medium M and stored in the storage unit 12, or a circuit breaker operation support program 12a that is downloaded via a communication unit 14 from a web server 40 (here, a program server) on a communication network (such as the Internet) N and stored in the storage unit 12.

[0030] The electronic circuitry of the work terminal 10 is driven by a battery power supply BA that uses a dry battery or a rechargeable battery.

[0031] The storage unit 12 has a program storage area for storing a circuit breaker operation support program 12a, as well as a work process data storage area 12b, a work process confirmation data storage area 12c, a work data storage area 12d, and the like.

[0032] FIG. 5 is a diagram showing an example of work process data (12b) stored in the work process data storage area 12b of the work terminal 10. As shown in FIG.

[0033] The work process data (12b) is created as tabular data of work content corresponding to the on-site work procedures (processes) where electrical equipment switching and maintenance work is performed, and may be created by the work terminal 10 before the work and stored in the memory unit 12, or may be read from the recording medium M and stored in the memory unit 12, or may be read from an external information device such as a PC (Personal Computer) via the communication unit 14, the short-range wireless communication unit 16, or an external input / output terminal (not shown) and stored in the memory unit 12.

[0034] As shown in FIG. 5, the work process data (12b) records, for each work process performed on site, data including the work of turning on or off the circuit breaker 20A and other work, such as identification information of the control panel 20 and circuit breaker 20A to be worked on (here, control panel “A”, circuit breakers “A7” and “A5”) and the work content (OFF (shutdown) or ON (turn on)), identification information of the wiring to be worked on (here, wiring “A7-0002” and “A5-0013”) and the work content (disconnect or connect).

[0035] In addition, the work process data (12b) may include identification information of all control panels 20 included in the work process data and to be worked on (here, control panel “A”), and identification information of all circuit breakers 20A installed on the same control panel 20 (here, circuit breakers “A1” to “A7”).

[0036] FIG. 6 is a diagram showing an example of the work process confirmation data (12c) stored in the work process confirmation data storage area 12c of the work terminal 10. As shown in FIG.

[0037] The work process confirmation data (12c) is data that is displayed on the touch panel display unit 15 and used by the worker H to proceed with each relevant work while checking the work content and its implementation for each process based on the work process data (12b) (see FIG. 5) stored in the work process data storage area 12b, and as shown in FIG. 6, a confirmation button CH (confirmation operation unit) is associated and added to each item of the process and its work content in the work process data (12b).

[0038] The working data storage area 12d temporarily stores various data generated by the control unit 11 or input / output by the control unit 11 according to the circuit breaker operation support program 12a, as needed.

[0039] The work terminal 10 of the circuit breaker operation support system 1 configured in this manner has the control unit 11 controlling the operation of each part in cooperation with the circuit breaker operation limiting devices 30A1 to 30A7 in accordance with the circuit breaker operation support program 12a, and the hardware and software working together to realize the circuit breaker operation support function described in the operation explanation below.

[0040] <Configuration of circuit breaker operation limiting device 30A1> FIG. 7 is a block diagram showing the configuration of the electronic circuit of the circuit breaker operation limiting device 30A1.

[0041] The other circuit breaker operation limiting devices 30A2 to 30A7 have the same configuration.

[0042] The circuit breaker operation limiting device 30A1 includes a control unit (CPU) .

[0043] The control unit 34 is connected to the lever lock unit 31, indicator light 32, and short-range wireless communication unit 33 described above in Figures 1 and 2 via a system and data bus, as well as to a memory unit 35 and an external input / output unit 36.

[0044] The control unit 34 controls the operation of each part of the circuit in accordance with a limiting device control program 35a stored in advance in the storage unit 35.

[0045] The electronic circuit of the circuit breaker operation limiting device 30A1 is driven by a battery power supply BA that uses a dry battery or a rechargeable battery.

[0046] The storage unit 35 has a program storage area for storing the limiting device control program 35a, as well as a circuit breaker ID registration area 35b and the like.

[0047] In the circuit breaker ID registration area 35b, when the limiting device 30A1 is attached to the circuit breaker 20A1, the identification information "A1" of the circuit breaker 20A1 is input from the operator terminal 10 via the external input / output unit 36 ​​or the short-range wireless communication unit 33 and stored. At this time, the operator H operating the work terminal 10 inputs the identification information "A1" by referring to the identification symbol "A1" inscribed on the housing of the circuit breaker 20A1 to be attached, for example.

[0048] The circuit breaker operation limiting devices 30A1 to 30A7 of the circuit breaker operation support system 1 configured in this manner have the control unit 34 controlling the operation of each part in cooperation with the work terminal 10 in accordance with the limiting device control program 35a, and the hardware and software working together to realize the circuit breaker operation limiting function as described in the operation explanation below.

[0049] Next, the operation of the circuit breaker operation support system 1 according to the embodiment will be described.

[0050] <Operation of circuit breaker operation support system 1> FIG. 8 is a flowchart showing the circuit breaker operation support process executed by the work terminal 10 of the circuit breaker operation support system 1.

[0051] FIG. 9 is a diagram showing the operation of the circuit breaker operation limiting devices 30A1 to 30A7 in accordance with the circuit breaker operation support processing of the work terminal 10. As shown in FIG.

[0052] Here, the explanation will be given assuming that a worker H performs work in accordance with a work process (see FIG. 5) that includes the control panel "A" 20 configured as shown in FIG. 1 as a work object.

[0053] First, the lever locking sections 31 of the circuit breaker operation limiting devices 30A1 to 30A7 attached to the circuit breakers "A1" 20A1 to "A7" 20A7 of the control panel "A" 20 are set by the control section 34 to a default state in which no driving power is applied, with the locking pin 31P retracted, and as shown in Figure 9(A), the restriction (lock) of the opening / closing lever SW is released when all the circuit breakers "A1" 20A1 to "A7" 20A7 are in the ON (closed) state.

[0054] The worker H inputs the work process data (12b) of the work to be performed into the work terminal 10 and stores it in the work process data storage area 12b.

[0055] When the worker H touches an icon for launching the circuit breaker operation support program 12a displayed on the touch panel display unit 15 of the work terminal 10, the control unit 11 starts the circuit breaker operation support processing shown in Figure 8 in accordance with the circuit breaker operation support program 12a.

[0056] Based on the work process data (12b) (see FIG. 5) stored in the work process data storage area 12b, the control unit 11 causes the touch panel display unit 15 to display the work process confirmation data (12c) stored in the work process confirmation data storage area 12c as shown in FIG. 6 (step S0).

[0057] The control unit 11 reads out the identification information "A1" to "A7" of all circuit breakers 20A1 to 20A7 of the control panel "A" 20 to be worked on, which is included in the work process data (12b) (see Figure 5), and transmits an operation lock signal including the read-out identification information "A1" to "A7" of the circuit breakers 20A1 to 20A7 to the circuit breaker operation limiting devices 30A1 to 30A7 via short-range wireless communication BT (step S1).

[0058] The control unit 34 of the circuit breaker operation limiting device 30A1 to 30A7 attached to the circuit breakers 20A1 to 20A7 protrudes the lock pin 31P of the lever lock unit 31 in response to receiving an operation lock signal from the work terminal 10, the operation lock signal including the identification information An of the circuit breaker 20An to be attached, which is registered in its own circuit breaker ID registration area 35b, and restricts (locks) the operation of the opening / closing lever SW of the corresponding circuit breaker 20An.

[0059] Then, as shown in Figure 9(B), the opening and closing levers SW of all circuit breakers "A1" 20A1 to "A7" 20A7 of the control panel "A" 20 are restricted by the lock pins 31P of the corresponding circuit breaker operation limiting devices 30A1 to 30A7, and unnecessary operation of all circuit breakers "A1" 20A1 to "A7" is temporarily prevented.

[0060] Here, the control unit 11 of the work terminal 10 determines whether or not a forced stop operation has been performed by the worker H, for example, based on whether or not a forced stop icon displayed on the touch panel display unit 15 has been touched (step S2). A forced stop operation is performed, for example, when the worker H himself discovers an abnormality in the equipment that is the target of work, which requires the worker H to stop the work himself.

[0061] If it is determined that a forced shutdown operation has been performed by worker H (step S2 (Yes)), the control unit 11 sends an operation lock release signal including the identification information "A1" to "A7" of all circuit breakers 20A1 to 20A7 possessed by the control panel "A" 20 being worked on to the circuit breaker operation limiting devices 30A1 to 30A7 (step S10).

[0062] Then, when the control units 34 of the circuit breaker operation limiting devices 30A1 to 30A7 receive an operation lock release signal from the work terminal 10, which includes the identification information An of the circuit breaker 20An to which they are attached, they retract the lock pin 31P of the lever lock unit 31 as shown in Figure 9(A), and release the restriction (lock) on the opening / closing lever SW of the corresponding circuit breaker 20An.

[0063] This allows worker H to quickly stop what he is doing and deal with the abnormal situation that he has discovered.

[0064] In general, the control panel 20 or the distribution panel has the function of detecting abnormalities such as failures and transmitting an abnormality occurrence signal to a central monitoring device that includes the control panel 20 or the distribution panel as one of its monitoring targets to notify the occurrence of an abnormality.

[0065] The control unit 11 of the work terminal 10 determines whether or not an abnormality occurrence signal transmitted in response to the occurrence of an abnormality in the control panel "A" 20 has been received (step S3).

[0066] Even if it is determined that an abnormality occurrence signal has been received from the control panel "A" 20 (step S3 (Yes)), as in the case where the forced stop operation is performed by the worker H described above, the control unit 11 sends an operation lock release signal including the identification information "A1" to "A7" of all circuit breakers 20A1 to 20A7 of the control panel "A" 20 being worked on to the circuit breaker operation limiting devices 30A1 to 30A7 (step S10), and releases the restriction (lock) on the opening and closing levers SW of all circuit breakers 20A1 to 20A7 as shown in Figure 9 (A).

[0067] This allows worker H to quickly stop the work he is doing and deal with any abnormality that occurs in control panel "A" 20 that is the target of the work.

[0068] In a normal state, where it is determined in step S2 that a forced shutdown operation has not been performed by the worker H (step S2 (No)), and where it is determined in step S3 that an abnormality occurrence signal has not been received from the control panel "A" 20 (step S3 (No)), the control unit 11 executes a circuit breaker operation support process according to the work content for each process recorded in the work process data (12b) (see Figure 5) stored in the work process data storage area 12b, as described below (steps S4 to S8).

[0069] That is, the control unit 11 determines whether the work content of the next work (firstly, work [1]) recorded in the work process data (12b) is the work of opening and closing (closing / breaking) a circuit breaker (step S4).

[0070] Here, based on the work content of step [1] "Circuit breaker "A7" OFF", if it is determined that the next work content is to open / close (turn on / off) the circuit breaker (step S4 (Yes)), the control unit 11 sends an illumination signal and an operation lock release signal including the identification information "A7" of the circuit breaker "A7" 20A7 to be worked on to the circuit breaker operation limiting device 30A7 (step S5).

[0071] When the circuit breaker operation limiting device 30A7 receives an illumination signal and an operation lock release signal including the identification information "A7" of the circuit breaker "A7" 20A7 transmitted from the work terminal 10, the control unit 34 turns on the indicator light 32 to notify the worker H of the circuit breaker "A7" 20A7 that is the target of work in step [1], as shown in Figure 9 (C), and retracts the lock pin 31P of the lever locking unit 31, releasing the restriction (lock) on the opening / closing lever SW of the circuit breaker "A7" 20A7, allowing operation of the opening / closing lever SW.

[0072] As a result, when worker H performs work in accordance with the work content "Circuit breaker "A7" OFF" of step [1] of the work process confirmation data (12c) (see Figure 6) displayed on the touch panel display unit 15, not only can he easily and without error confirm the circuit breaker "A7" 20A7 that is the target of the work by the lit indicator light 32, but also, because the restriction (lock) on the opening / closing lever SW of only circuit breaker "A7" 20A7 is released, he can operate the opening / closing lever SW of circuit breaker "A7" 20A7 from ON to OFF (shutoff) without operating it incorrectly.

[0073] In this way, in response to worker H completing the work of step [1], worker H touches the confirmation button CH for step [1] in the work process confirmation data (12c) (see Figure 6) displayed on the display unit 15, causing a check mark to appear (step S6 (Yes)), and the control unit 11 sends a light-off signal and an operation lock signal, including the identification information "A7" of the circuit breaker "A7" 20A7 to be worked on, to the circuit breaker operation limiting device 30A7, turning off the indicator light 32 and again restricting (locking) the operation of the opening / closing lever SW of circuit breaker "A7" 20A7 (step S7).

[0074] The control unit 11 determines whether all the work has been completed based on whether check marks have been displayed on the confirmation buttons CH of all the work processes in the work process confirmation data (12c) displayed on the display unit 15 (step S8).

[0075] Here, a check mark is displayed on the confirmation button CH of step [1], and it is determined that all work has not been completed (step S8 (No)), and the control unit 11 repeats the process from step S4.

[0076] That is, the control unit 11 determines whether the work content of the next work (work process [2]) recorded in the work process data (12b) is the work of opening and closing (closing / breaking) a circuit breaker (step S4).

[0077] Here, based on the work content of step [2], “Remove wiring “A7-0002””, if it is determined that the next work content is not the work of opening / closing (closing / shutting off) the circuit breaker (step S4 (No)), the control unit 11 waits for a check mark to be displayed on the confirmation button CH of the corresponding step [2] in the work process confirmation data (12c) (see Figure 6) (step S9).

[0078] Worker H performs the work in accordance with the work content of step [2] in the work process confirmation data (12c) (see Figure 6), "Remove wiring "A7-0002", and upon completing the work of step [2], he touches the confirmation button CH of step [2] to display a check mark (step S9 (Yes)).

[0079] Then, the control unit 11 determines that all the work has not been completed (step S8 (No)), as described above, and repeats the process from step S4.

[0080] Here, based on the work content of the next work, step [3], "Turn circuit breaker "A5" OFF," if it is determined that the next work content is to open / close (turn on / off) the circuit breaker (step S4 (Yes)), the control unit 11 sends an illumination signal and an operation lock release signal including the identification information "A5" of the circuit breaker "A5" 20A5 to be worked on to the circuit breaker operation limiting device 30A5 (step S5).

[0081] When the circuit breaker operation limiting device 30A5 receives an illumination signal and an operation lock release signal including the identification information "A5" of the circuit breaker "A5" 20A5 transmitted from the work terminal 10, the control unit 34 turns on the indicator light 32 to notify the worker H of the circuit breaker "A5" 20A5 that is the target of work in step [3], as shown in Figure 9 (D), and retracts the lock pin 31P of the lever locking unit 31, releasing the restriction (lock) on the opening / closing lever SW of the circuit breaker "A5" 20A5, allowing the opening / closing lever SW to be operated.

[0082] As a result, when worker H performs work in accordance with the work content "Circuit breaker "A5" OFF" of step [3] of the work process confirmation data (12c) (see Figure 6), as described above, not only can he easily and without error confirm the circuit breaker "A5" 20A5 that is the target of the work by the lit indicator light 32, but also, because the restriction (lock) on the opening / closing lever SW of only circuit breaker "A5" 20A5 is released, he can operate the opening / closing lever SW of circuit breaker "A5" 20A5 from ON to OFF (shutoff) without any mistaken operation.

[0083] When worker H completes the work of step [3], worker H touches the confirmation button CH for step [3] in the work process confirmation data (12c) (see Figure 6) to display a check mark (step S6 (Yes)), and the control unit 11 sends a light-off signal and an operation lock signal including the identification information "A5" of the circuit breaker "A5" 20A5 to be worked on to the circuit breaker operation limiting device 30A5, turns off the indicator light 32, and again restricts (locks) the operation of the opening / closing lever SW of circuit breaker "A5" 20A5 (step S7).

[0084] Thereafter, in accordance with the work process data (12b) (see FIG. 5) and the work process confirmation data (12c) (see FIG. 6) corresponding to the work process data (12b), the work terminal 10 and the circuit breaker operation limiting devices 30A1 to 30A7 cooperate to carry out the work, and the worker H performs the work, as described above.

[0085] Then, when the control unit 11 determines that all work has been completed based on the fact that check marks have been displayed on the confirmation buttons CH for all processes in the work process confirmation data (12c) (step S8 (Yes)), the control unit 11 sends an operation lock release signal including the identification information "A1" to "A7" of all circuit breakers 20A1 to 20A7 of the control panel "A" 20 to be worked on to the circuit breaker operation limiting devices 30A1 to 30A7 (step S10), releases the restriction (lock) on the opening and closing levers SW of all circuit breakers 20A1 to 20A7 as shown in Figure 9 (A), and ends the series of circuit breaker operation support processes.

[0086] <Summary of the embodiment> As described above, according to the embodiment of the circuit breaker operation support system 1, circuit breaker operation limiting devices 30A1, 30A2, ... that operate using a battery power source BA are installed on a plurality of circuit breakers "A1" 20A1, "A2", 20A2, ... installed on the control panel "A" 20 that is the target of work, and identification information "A1", "A2", ... corresponding to each circuit breaker "A1" 20A1, "A2", 20A2, ... is registered and attached.

[0087] The work terminal 10 displays on the touch panel display 15 work process confirmation data (12c) corresponding to the work process data (12b) for the control panel "A" 20 included as the work target, and transmits an operation lock signal including the identification information "A1", "A2", ... of all the circuit breakers "A1" 20A1, "A2", ... to each circuit breaker operation limiting device 30A1, 30A2, ..., thereby temporarily limiting (locking) the operation of the opening / closing lever SW of all the circuit breakers "A1" 20A1, "A2", 20A2, ....

[0088] Then, for each step in the work process data (12b), if the work content includes opening / closing (closing / shutting) the circuit breaker "An" 20An, the work terminal 10 sends an illumination signal and an operation lock release signal including the identification information "An" of the circuit breaker "An" 20An to the corresponding circuit breaker operation limiting device 30An, turns on the indicator light 32, notifies the worker H of the circuit breaker "An" 20An that is the target of the work in that step, and releases the restriction (lock) on the opening / closing lever SW of the circuit breaker "An" 20An, making it possible to operate it.

[0089] When worker H completes the work of the process by operating the opening / closing lever SW of circuit breaker "An" 20An, whose operation restriction (lock) has been released, in accordance with the displayed work process confirmation data (12c), and touches the confirmation button CH associated with that process in the work process confirmation data (12c), the work terminal 10 sends a light-off signal and an operation lock signal including the identification information "An" of that circuit breaker "An" 20An to the corresponding circuit breaker operation restriction device 30An, turns off the indicator light 32, and again restricts (locks) the operation of the opening / closing lever SW of that circuit breaker "An" 20An, returning the operation of all circuit breakers "A1" 20A1, "A2" 20A2, ... to the restricted (locked) state.

[0090] If the work content corresponding to the next process is not opening / closing (closing / shutting off) the circuit breaker “An” 20An, the work terminal 10 determines that the confirmation button CH corresponding to the same process in the work process confirmation data (12c) being displayed has been touched by the worker H, and then repeats the processing according to the work content of the next process.

[0091] Therefore, according to the embodiment of the circuit breaker operation support system 1, it is possible to easily and reliably prevent erroneous circuit breaker shutoff / on even when targeting multiple circuit breakers concentrated in a control panel or distribution panel of electrical equipment, when shutting off external power, or when work other than circuit breakers is included.

[0092] <Other embodiments> In the circuit breaker operation support processing (see Figure 8) of the work terminal 10 of the above embodiment, when an abnormality occurrence signal is received from the control panel "A" 20 (step S3 (Yes)), an operation lock release signal including the identification information "A1" to "A7" of all circuit breakers 20A1 to 20A7 is sent to the circuit breaker operation limiting devices 30A1 to 30A7 (step S10), thereby releasing the restriction (lock) on the opening and closing levers SW of all circuit breakers 20A1 to 20A7.

[0093] Alternatively, the circuit breaker operation limiting devices 30A1 to 30A7 may be configured to directly receive the abnormality occurrence signal from the control panel "A" 20, and the restrictions (locks) on the opening and closing levers SW of all the circuit breakers 20A1 to 20A7 may be released.

[0094] In addition, the lever lock portion 31 of the circuit breaker operation limiting devices 30A1, 30A2, ... in the above embodiment is configured to protrude or retract the lock pin 31P, automatically limiting (locking) or releasing the limit on the operation of the opening / closing lever SW of the circuit breaker 20A1.

[0095] Without being limited to this, for example, the lock pin 31P may be configured so that one end serves as a fulcrum and the other end rotates in an arc in the vertical direction, like a crossing barrier at a railroad crossing, and the opening / closing lever SW is manually restricted (locked) by the operator H, and the restriction is automatically released by the lever lock unit 31.

[0096] Although several embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be embodied in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included within the scope and spirit of the invention, and are also included in the scope of the invention and its equivalents as defined in the claims. [Explanation of symbols]

[0097] 1... circuit breaker operation support system, H... operator, 10... work terminal (communication terminal), 20...Control panel "A", 20An...Circuit breaker, SW...Open / close lever, 30An... circuit breaker operation limiting device, 31... lever locking portion, 31P... lock pin, 31R...pin receiving portion, 32...indicator light, 33...near field wireless communication portion, BT...near field wireless communication.

Claims

1. A circuit breaker operation support system including a communication terminal operated by an operator and a circuit breaker operation limiting device provided in a circuit breaker and having a communication function with the communication terminal, The circuit breaker operation limiting device is an indicator light that lights up in response to a lighting signal transmitted from the communication terminal and that turns off in response to a lighting-off signal; a limiting member that moves to a first position that limits the movement of the opening / closing lever of the circuit breaker and a second position that does not limit the movement; a lever limiting unit that moves the limiting member from the first position to the second position in response to a limit release signal transmitted from the communication terminal, and moves the limiting member from the second position to the first position in response to a limit signal transmitted from the communication terminal, The communication terminal A display unit; a work process data storage unit that stores work process data that records the work content of opening or closing the circuit breaker as the work content of at least one work process among a plurality of work processes performed by the worker; a confirmation data display unit that displays on the display unit work process confirmation data, to which a confirmation operation unit that is operated by the worker is added for each work process recorded in the work process data; a work content determination unit that determines, for each work process recorded in the work process data, whether the work content is a work content for opening or closing the circuit breaker; a restriction release signal transmitting unit that transmits a lighting signal and a restriction release signal to the circuit breaker operation limiting device when the work content determining unit determines that the work content is work content to open or close the circuit breaker; and a restriction signal transmitting unit that transmits a light-off signal and a restriction signal to the circuit breaker operation restriction device when the confirmation operation unit corresponding to the work process in the work process confirmation data that has been determined to be the work content of turning off or turning on the circuit breaker is operated after transmitting the light-on signal and the restriction release signal. Circuit breaker operation support system.

2. The circuit breaker operation limiting device is provided for each of the plurality of circuit breakers, and stores identification information of the circuit breaker, In the communication terminal, the restriction release signal transmission unit transmits a lighting signal and a restriction release signal including identification information of the determined circuit breaker when the work content determination unit determines that the work content is work content to open or close the circuit breaker; the restriction signal transmitting unit, after transmitting the light-on signal and the restriction release signal, transmits a light-off signal and a restriction signal including identification information of the determined circuit breaker when the confirmation operation unit corresponding to the work process in the work process confirmation data, whose work content is determined to be work content for turning off or turning on the circuit breaker, is operated; In the circuit breaker operation limiting device, the indicator light is turned on in response to a turn-on signal including identification information of the circuit breaker provided with the circuit breaker operation limiting device, and is turned off in response to a turn-off signal, the turn-off signal being transmitted from the communication terminal; the lever limiting unit operates the limiting member from the first position to the second position in response to a limit release signal including identification information of the circuit breaker in which the circuit breaker operation limiting device is installed, and operates the limiting member from the second position to the first position in response to a limit signal including identification information of the circuit breaker in which the circuit breaker operation limiting device is installed, and The circuit breaker operation support system according to claim 1 .

3. The communication terminal and an all-circuit breaker restriction signal transmitting unit that transmits the restriction signal before the work content determining unit determines whether the work content is to open or close the circuit breaker. The circuit breaker operation support system according to claim 1 or 2.

4. The communication terminal and a total circuit breaker restriction release signal transmitting unit that transmits the restriction release signal when the confirmation operation units corresponding to all of the work processes in the work process confirmation data are operated. The circuit breaker operation support system according to any one of claims 1 to 3.

5. The circuit breaker operation limiting device is A limiting device housing is provided which is detachable from the circuit breaker, The device is provided with a battery power source for operating at least the communication function with the communication terminal, the indicator light, and the lever limiting unit. The circuit breaker operation support system according to any one of claims 1 to 4.

6. The communication terminal an abnormality restriction release signal transmitting unit that transmits the restriction release signal when a forced stop operation is performed by the operator or when an abnormality occurrence signal is received from the outside; The circuit breaker operation support system according to any one of claims 1 to 5.

7. A communication terminal in the circuit breaker operation support system according to claim 1.

8. A circuit breaker operation limiting device in the circuit breaker operation support system according to claim 1.

9. A circuit breaker operation support method performed by a communication terminal operated by an operator and a circuit breaker operation limiting device provided in a circuit breaker and having a communication function with the communication terminal, comprising: The circuit breaker operation limiting device turning on an indicator light provided in the circuit breaker operation limiting device in response to a turn-on signal transmitted from the communication terminal and turning off the indicator light in response to a turn-off signal; a limiting member that moves between a first position that limits movement of the opening / closing lever of the circuit breaker and a second position that does not limit movement is operated from the first position to the second position in response to a restriction release signal transmitted from the communication terminal, and is operated from the second position to the first position in response to a restriction signal transmitted from the communication terminal; By the communication terminal, storing work process data that records the work content of opening or closing the circuit breaker as the work content of at least one work process among a plurality of work processes performed by the worker; displaying, on a display unit, work process confirmation data to which a confirmation operation unit to be operated by the worker has been added for each work process recorded in the work process data; determining whether the work content is to open or close the circuit breaker for each work process recorded in the work process data; transmitting a lighting signal and a restriction release signal to the circuit breaker operation restriction device when it is determined that the work content is work content to open or close the circuit breaker; After transmitting the light-on signal and the restriction release signal, if the confirmation operation unit corresponding to the work process in the work process confirmation data, which has been determined to be the work content of opening or closing the circuit breaker, is operated, a light-off signal and a restriction signal are transmitted to the circuit breaker operation restriction device. This is a circuit breaker operation support method.

10. a communication terminal operated by an operator; a limiting member that moves to a first position that limits movement of an opening / closing lever of the circuit breaker and a second position that does not limit movement of the opening / closing lever of the circuit breaker; and a lever limiting unit that moves the limiting member from the first position to the second position in response to a limit release signal transmitted from the communication terminal, and moves the limiting member from the second position to the first position in response to a limit signal transmitted from the communication terminal, The control unit a work process data storage unit that stores work process data that records the work content of opening or closing the circuit breaker as the work content of at least one work process among a plurality of work processes performed by the worker; a confirmation data display unit that displays, on a display unit, work process confirmation data to which a confirmation operation unit operated by the worker is added for each work process recorded in the work process data; a work content determination unit that determines, for each work process recorded in the work process data, whether the work content is a work content for opening or closing the circuit breaker; a restriction release signal transmitting unit that transmits a lighting signal and a restriction release signal to the circuit breaker operation limiting device when the work content determining unit determines that the work content is work content to open or close the circuit breaker; a restriction signal transmitting unit that transmits a light-off signal and a restriction signal to the circuit breaker operation restriction device when the confirmation operation unit corresponding to the work process in the work process confirmation data that has been determined to be the work content of turning off or turning on the circuit breaker is operated after transmitting the light-on signal and the restriction release signal; A program to function as a

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