Lead-in and lead-out device and control method thereof

Abstract

The present invention relates to a lead-in and lead-out device for leading in or leading out a circuit breaker to a distribution board and a method for controlling the same, the current of a power unit for moving and coupling the circuit breaker is measured, the lead-in and lead-out state of the circuit breaker is determined on the basis thereof, and the current of the power unit measured during the movement of the circuit breaker is set as a reference current. And the lead-in and lead-out state of the circuit breaker is judged by using the relative ratio of the reference current and the current current, so that the lead-in and lead-out state of the circuit breaker can be mastered more accurately, and the lead-in and lead-out device can be controlled more accurately.

Description

Technical Field

[0001] This invention relates to lead-in / lead-out devices, and more particularly, to a lead-in / lead-out device that can be easily coupled and detached from a power distribution frame and coupled to a precise location. Background Technology

[0002] A distribution board is a device that, depending on the system or purpose, transmits electricity received from an external power supply to the load. The distribution board is energized by both the external power supply and the load.

[0003] To prevent potential electrical accidents between external power sources and loads, circuit breakers are typically installed in the distribution panel. These circuit breakers are configured to be energized separately from both the external power source and the load, thereby interrupting them in the event of an abnormal current. This prevents such electrical accidents.

[0004] When performing a current-blocking operation, it may be necessary to replace components of the circuit breaker. Alternatively, it is conceivable that the circuit breaker may need to be disconnected from the distribution panel for maintenance. Therefore, circuit breakers are typically detachably integrated into the distribution panel.

[0005] On the other hand, the size of switchboards and circuit breakers tends to be proportional to their rated capacity. That is, when a larger current flows, the size of the circuit breaker used to block it may also increase. Consequently, the size of the switchboard connected to the circuit breaker may also increase. Therefore, a large force is required to connect or disconnect a large circuit breaker from the switchboard.

[0006] However, in the case of traditional switchboards and circuit breakers, the process of connecting and disconnecting circuit breakers is done manually. That is, the process is usually performed by operators. Therefore, the accuracy and efficiency of connecting and disconnecting circuit breakers may be reduced. Furthermore, it is difficult to rule out the possibility of safety accidents when connecting and disconnecting heavy circuit breakers.

[0007] For this purpose, a lead-in / lead-out device is used for introducing and leading in a circuit breaker to or from a distribution panel. The lead-in / lead-out device is configured to introduce or lead in a circuit breaker while being connected to and supported by the distribution panel. Therefore, the lead-in / lead-out device typically includes a first configuration connected to the distribution panel, a second configuration connected to the circuit breaker, and a third configuration for driving the second configuration.

[0008] However, as mentioned above, with the increase in the size and weight of circuit breakers, the size and weight of the input and output devices can also increase to provide the corresponding power. In this case, excessive force is required to integrate the input and output devices into the distribution panel, which may reduce the ease of operation.

[0009] Furthermore, as the weight of the lead-in and lead-out devices increases, the difficulty of configuring them to the precise location for connection with the circuit breaker may also increase. In this case, there is a risk that the overall difficulty of the operation of leading and leading the circuit breaker into and out of the distribution panel will increase.

[0010] To address this problem, prior art, such as Korean Patent Document No. 10-1733705 or Korean Patent Document No. 10-1912449, discloses a distribution panel equipped with a vacuum circuit breaker access safety device or a high-voltage distribution panel using a remote locking system.

[0011] However, in this existing technology, the vacuum circuit breaker is manually introduced from the distribution panel or the actuator for the mobile circuit breaker is located in the high-voltage distribution panel, which complicates the system.

[0012] Therefore, in order to solve the problems of this prior art, the inventors of the present invention have been working diligently. Much effort has been made to provide an introduction / exit device and its control method that are easy to install and disconnect and can easily and safely perform the process of introducing and removing circuit breakers, and finally, the present invention has been completed. Summary of the Invention

[0013] The problem that the invention aims to solve

[0014] The purpose of this invention is to provide an inlet / outlet device and its control method that have a structure that is easy to set up and detach.

[0015] In addition, the objective is to provide a lead-out device and its control method having a structure that can easily perform lead-out by automatically executing the lead-out process of a circuit breaker.

[0016] On the other hand, other objectives not explicitly stated in this invention can be considered within the scope readily derived from the following detailed description and its effects.

[0017] Technical solutions to the problem

[0018] The present invention is characterized in that, The power unit includes: a bracket portion comprising a bracket body detachably coupled to a power distribution frame along a first direction and a guide profile coupled to the bracket body and extending along the first direction; a power unit comprising a power bracket movably coupled to the guide profile along the first direction, the power unit being detachably coupled to the bracket portion along the first direction, providing power for introducing and withdrawing a circuit breaker housed in the power distribution frame; a sensor portion for sensing the state of the power unit; and a control portion comprising one or more processors and a memory for controlling the power unit. The control unit controls the power unit by knowing the input / output status of the circuit breaker based on the status of the power unit received from the sensor unit.

[0019] The characteristic is that the sensor unit is a current sensor; the control unit determines the lead-in / lead-out state of the circuit breaker by measuring the current of the power unit by the sensor unit.

[0020] The characteristic is that the control unit sets the current of the power unit when the circuit breaker moves by the input and output devices without load as a reference current, and uses the relative ratio of the reference current and the current of the power unit to determine the input and output state of the circuit breaker.

[0021] The characteristic is that if the current of the power unit is less than the reference current, the control unit determines that the circuit breaker has completed its idling state of movement or introduction / extraction.

[0022] The characteristic is that if the current of the power unit is greater than the reference current, the control unit determines that the circuit breaker is in the process of being engaged or disengaged.

[0023] The feature is that, after a constant time has elapsed since the movement of the circuit breaker used to initiate the action has begun, the control unit measures the current of the power unit and sets it as a reference current. If the current of the power unit is less than the reference current, it is determined that the movement of the circuit breaker to the test position has been completed.

[0024] The feature is that, after the circuit breaker completes its movement to the test position, the control unit controls the power unit to start the movement of the circuit breaker to the closing position. After a constant time, the current of the power unit is measured and reset to a reference current. If the current of the power unit is greater than the reset reference current, it is determined that the circuit breaker is in the process of closing. If the current of the power unit is less than the reference current again, it is determined that the closing operation of the circuit breaker has been completed and the movement of the circuit breaker to the closing position has been completed.

[0025] The feature is that, after a constant time has elapsed since the movement of the circuit breaker used for triggering the action begins, the control unit measures the current of the power unit and sets it as a reference current. If the current of the power unit is less than the reference current, it is determined that the movement of the circuit breaker to the test position has been completed.

[0026] The characteristic is that, after the circuit breaker has moved to the test position, the control unit controls the power unit to move the circuit breaker, and after a constant time has elapsed since the start of the movement of the circuit breaker, measures the current of the power unit and resets it to a reference current. If the current of the power unit is less than the reset reference current, it is determined that the movement of the circuit breaker to the separation position has been completed.

[0027] The feature is that if the current of the power unit reaches or exceeds a preset limit current, the control unit temporarily stops the operation of the power unit, then moves the power unit in the opposite direction and stops it again, and then moves the power unit in the original direction again. If the current of the power unit is less than the reference current, it is determined that the circuit breaker has been engaged, disengaged, or moved.

[0028] Another embodiment of the control method for the introduction and extraction device of the present invention is characterized in that, The steps include: activating the power unit included in the lead-in / lead-out device for the lead-in operation of the circuit breaker; measuring the current of the power unit by the sensor unit and setting it as a reference current; and determining that the movement of the circuit breaker to the test position has been completed and the power unit is idling if the current of the power unit is less than the reference current.

[0029] The feature is that, after determining that the movement of the circuit breaker to the test position has been completed and the power unit is idling, the method further includes: controlling the power unit to start the movement of the circuit breaker to the engagement position; measuring the current of the power unit and resetting it to a reference current; determining that the circuit breaker is in the engagement operation process if the current of the power unit is greater than the reset reference current; and determining that the engagement operation of the circuit breaker has been completed and the movement of the circuit breaker to the engagement position has been completed if the current of the power unit is again less than the reference current.

[0030] A further embodiment of the control method for introducing and extracting the device according to the present invention is characterized in that, The steps include: activating the power unit included in the lead-out device for the circuit breaker's lead-out operation; measuring the current of the power unit by the sensor unit and setting it as a reference current; and determining that the movement of the circuit breaker to the test position has been completed if the current of the power unit is again less than the reference current.

[0031] After determining that the movement of the circuit breaker to the test position has been completed, the method further includes: activating the power unit for the movement of the circuit breaker; measuring the current of the power unit and resetting it to a reference current; and if the current of the power unit is less than the reference current, determining that the movement of the circuit breaker to the disconnect position has been completed and allowing the power unit to idle.

[0032] Invention Effects

[0033] According to the present invention, the installation and disassembly of the lead-out device are easy, thereby enabling smooth lead-out of the circuit breaker.

[0034] In addition, it has the advantage of automatically executing the circuit breaker's introduction and withdrawal process by controlling the power unit of the introduction and withdrawal device.

[0035] On the other hand, even if the effects are not explicitly mentioned herein, the effects and potential effects expected by the technical features of the present invention described in the following specification are the same as the effects described in the specification of the present invention. Attached Figure Description

[0036] Figure 1 This is a perspective view showing an input / output device and a power distribution frame incorporating the input / output device, according to a preferred embodiment of the present invention.

[0037] Figure 2 This is a perspective view of an inlet / outlet device according to a preferred embodiment of the present invention.

[0038] Figure 3 This is a schematic block diagram of an inlet / outlet device according to a preferred embodiment of the present invention.

[0039] Figure 4 This is a schematic flowchart of the introduction method of the introduction device according to another preferred embodiment of the present invention.

[0040] Figure 5 This is a schematic flowchart of a method for introducing and withdrawing a device according to another preferred embodiment of the present invention.

[0041] *It should be noted that the accompanying drawings are provided for illustrative purposes to understand the technical concept of the present invention, and the scope of the present invention is not limited by the drawings. Detailed Implementation

[0042] Hereinafter, with reference to the accompanying drawings, we will examine the various embodiments of the present invention, the structure of which and the effects thereof are derived. In describing the present invention, related disclosure functions are self-evident to those skilled in the art; however, detailed descriptions are omitted if it is deemed potentially unnecessary to obscure the essence of the invention.

[0043] The terms "first," "second," etc., are used to describe various constituent elements, but the constituent elements are not limited by the above terms. The above terms are only used to distinguish one constituent element from another. For example, without departing from the scope of the invention, "first constituent element" may be named "second constituent element," and similarly, "second constituent element" may be named "first constituent element." Furthermore, unless the context clearly indicates otherwise, singular expressions include plural expressions. Unless otherwise defined, the terminology used in the embodiments of the invention should be interpreted as having the meaning commonly understood by those skilled in the art.

[0044] Hereinafter, with reference to the accompanying drawings, the various embodiments of the present invention and the effects thereof will be described.

[0045] Figure 1 This is a perspective view showing an input / output device and a power distribution frame incorporating the input / output device, according to a preferred embodiment of the present invention.

[0046] Reference Figure 1 The diagram illustrates the combined state of the lead-in / lead-out device 1 and the power distribution frame 2 according to an embodiment of the present invention. The lead-in / lead-out device 1 can be combined with one side of the power distribution frame 2, i.e., the front side in the illustrated embodiment.

[0047] The lead-in / lead-out device 1 can extend through one side of the power distribution frame 2 and be combined with a circuit breaker (not shown) housed inside the power distribution frame 2. The lead-in / lead-out device 1 can be used to bring the circuit breaker (not shown) into or out of the power distribution frame 2 while it is combined with and supported by the power distribution frame 2.

[0048] The lead-in / lead-out device 1 can be detachably connected to the power distribution frame 2. Additionally, the lead-in / lead-out device 1 can be detachably connected to a circuit breaker (not shown) housed inside the power distribution frame 2. In the illustrated embodiment, the lead-in / lead-out device 1 moves rearward to connect with the power distribution frame 2 and moves forward to separate from the power distribution frame 2.

[0049] In particular, the various components of the lead-in / lead-out device 1 in this embodiment of the invention can be at least partially detachably combined with each other. Due to the configuration described above, the various components of the lead-in / lead-out device 1 can be sequentially combined with or separated from the power distribution frame 2.

[0050] The following will describe the power distribution frame 2 first, and then describe the incoming and outgoing device 1.

[0051] The distribution frame 2 houses a circuit breaker (not shown). The circuit breaker (not shown) housed in the distribution frame 2 can be energizedly connected to an external power source (not shown) or load (not shown). The circuit breaker (not shown) is housed in the distribution frame 2 and is not exposed to the outside. This prevents safety accidents caused by high-voltage current energized to the circuit breaker (not shown).

[0052] The distribution frame 2 can be any shape capable of accommodating a circuit breaker (not shown). In the illustrated embodiment, the distribution frame 2 is a three-dimensional shape having a length in the front-to-back direction, a width in the left-to-right direction, and a height in the top-to-bottom direction.

[0053] The power distribution frame 2 is detachably connected to the inlet / outlet device 1. As shown in the figure, the power distribution frame 2 is formed to have a larger volume than the inlet / outlet device 1, so the connection and separation can be performed as the inlet / outlet device 1 moves.

[0054] Figure 2 This is a perspective view of an inlet / outlet device according to a preferred embodiment of the present invention.

[0055] The lead-in / lead-out device 1 of the present invention is detachably connected to the power distribution frame 2. In this case, the lead-in / lead-out device 1 can also be detachably connected to a circuit breaker (not shown) that is housed in or to be housed in the power distribution frame 2. The lead-in / lead-out device 1 can move the circuit breaker (not shown) in the direction of being housed in or led out from the power distribution frame 2.

[0056] The lead-out device 1 can be electrically connected to an external power source (not shown) and a control unit (not shown). The power and control signals used to operate the power unit 20 (described later) can be transmitted from the external power source (not shown) and the control unit (not shown).

[0057] The lead-in / lead-out device 1 is combined with the power distribution frame 2. Specifically, a portion of the lead-in / lead-out device 1 is combined with the power distribution board, and other components of the lead-in / lead-out device 1 are combined with the lead-in / lead-out device connection part.

[0058] In the illustrated embodiment, the lead-in / lead-out device 1 includes a bracket portion 10, a power unit 20, and a handle portion 30. At this time, the handle portion 30, the bracket portion 10, and the power unit 20 are respectively provided from the power distribution frame 2. That is, the power unit 20, the bracket portion 10, and the handle portion 30 are arranged in a direction from the front side to the rear side.

[0059] In this embodiment of the invention, the bracket portion 10, the power unit 20, and the handle portion 30 of the lead-in / lead-out device 1 can be detachably coupled to each other. Therefore, the bracket portion 10, the power unit 20, and the handle portion 30 can be coupled to the power distribution frame 2 separately when they are detached.

[0060] Therefore, compared to the case where the lead-in / lead-out device 1 is integrally formed and combined with the power distribution frame 2, the amount of force required for the connection is reduced, thereby improving workability. Thus, not only can the lead-in / lead-out device 1 be combined with the power distribution frame 2 with less force, but the connection positions of the lead-in / lead-out device 1 and the power distribution frame 2 can also be accurately matched.

[0061] Furthermore, as described later, the lead-in / lead-out device 1 of this embodiment of the invention can accurately and easily combine the bracket portion 10, the power portion 20, and the handle portion 30, which are detachably configured from each other. Therefore, the assembly process of the lead-in / lead-out device 1 can be easily performed, and the combination of each component can be firmly formed.

[0062] Figure 3 This is a general block diagram illustrating the configuration of an introduction / extraction device according to a preferred embodiment of the present invention.

[0063] The introduction and extraction device 1 of the present invention may include a frame part 10, a power part 20, a handle part 30, and a control part 40.

[0064] The lead-in / lead-out device 1 of the present invention can use the control unit 40 to control the power unit 20, thereby enabling lead-in / lead-out to be performed by moving the circuit breaker (not shown).

[0065] The power unit 20 provides the power required to introduce a circuit breaker (not shown) into or out of the space inside the distribution frame.

[0066] The power unit 20 can have any shape capable of moving the circuit breaker (not shown). In one embodiment, the power unit 20 can be configured to move the circuit breaker (not shown) using an electrical method such as a motor.

[0067] In the embodiment described, the power unit 20 is electrically connected to an external power source (not shown) and the control unit 40, respectively, and can receive the power and control signals required for operation. In another embodiment, the power unit 20 may be configured to move the circuit breaker (not shown) hydraulically.

[0068] The power unit 20 is combined with the bracket unit 10. The power unit 20 is combined with the bracket unit 10 so that it can slide in the direction facing the power distribution frame 2 (i.e., the front side) and in the opposite direction to the power distribution frame 2 (i.e., the rear side).

[0069] The power unit 20 is combined with the handle unit 30. The power unit 20 is combined with the circuit breaker (not shown) via the handle unit 30. The power applied by the power unit 20 can be transmitted to the circuit breaker (not shown) via the handle unit 30.

[0070] The sensor unit 40 includes a sensor for measuring the state of the input / output device 1.

[0071] For example, the sensor unit 40 may be a current sensor for measuring the current of the power unit 20. Alternatively, it may be a motor position sensor (MPS) capable of measuring the position of the motor in the power unit 20.

[0072] The control unit 50 can control the power unit 20 to safely introduce or draw out a circuit breaker (not shown) into or from the power distribution frame 2.

[0073] Therefore, the control unit 50 may include one or more processors 51 and memory 53.

[0074] The processor 51 can perform various control operations on the input / output device 1. That is, the processor 51 can control various components including the power unit 20 in the input / output device 1, and can execute various programs.

[0075] For example, processor 51 may include, but is not limited to, a processor as hardware or a program as software executed in a corresponding processor.

[0076] The memory 53 stores various information required for the operation of the lead-out device 1. The stored information in the memory 53 may include, but is not limited to, information for the control operations of the processor 51, program information related to the control method of the processor 51, etc.

[0077] For example, depending on its type, the memory 53 may include, but is not limited to, hard disk type, magnetic media type, CD-ROM (compact disc read-only memory), optical media type, magneto-optical media type, multimedia card micro type, flash memory type, ROM type (read-only memory type), or RAM type (random access memory type). Furthermore, depending on its purpose / location, the memory 53 may be a cache, buffer, main storage device, auxiliary storage device, or a separately configured storage system.

[0078] The control unit 50 controls the circuit breaker's input and output actions by controlling the power unit 20.

[0079] For this purpose, the control unit 50 utilizes information measured by the sensor unit 40. For example, the sensor unit 40 is a current sensor, which can determine the state of the power unit 20 based on the current value of the power unit 20. The sensor unit 40 may also include a position sensor to measure the position of the circuit breaker.

[0080] The control unit 50 divides the current of the power unit 20 into four stages, thereby enabling it to monitor the status of the circuit breaker introduced or drawn out by the lead-in / lead-out device 1.

[0081] At this point, the feature of the present invention is that, instead of using the absolute value of the current as a reference, a reference current is first measured, and the state of the power unit 20 and the circuit breaker is determined by using a relative ratio based on this.

[0082] When the current reference is used as an absolute value, the deviation between the input and output devices or the current value changing according to the operating environment cannot be reflected, so it may be impossible to grasp the accurate state. As a result, problems may arise in achieving accurate control of the input and output devices 1.

[0083] First, based on the process of introducing the circuit breaker into the distribution panel, the position of the circuit breaker can be divided into maintenance position, disconnection position, test position, and connection position.

[0084] The maintenance position is for the circuit breaker maintenance personnel to perform circuit breaker maintenance, and is the position where the circuit breaker is completely disconnected from the distribution panel.

[0085] The DISCONNECT position is when the circuit breaker is partially inserted into the switchboard and is in the aligned position.

[0086] The test position is a position where the terminals of the circuit breaker and the distribution panel are separated, but the control circuits are connected to each other. It is a position where the connection and operation of the circuit breaker can be confirmed.

[0087] The connected position is the position where the circuit breaker is fully connected to the distribution panel and all terminals are connected. If the connection of the circuit breaker begins in the connected position, the circuit breaker terminals and the connection points of the distribution panel will be engaged.

[0088] The process of drawing the circuit breaker from the distribution panel will be the reverse of the process described above.

[0089] In this way, the load of the power unit 20 changes according to the position of the circuit breaker, and the position of the circuit breaker is known and controlled by measuring the load based on the current state.

[0090] The current states of the present invention are distinguished as follows.

[0091] Current A: This is the current when the power unit 20 is idling after the circuit breaker has moved to the test position or has been connected or disconnected from the distribution panel. The control unit 50 determines that the current in the power unit 20 is in the state of current A when it is 0.7 to 0.97 times the current B below. The current A can be selected by an external switch or the like as a value between 0.7 and 0.97 times the current B.

[0092] B current: This is the current measured when the circuit breaker moves to the test position, and this current is set as the reference current. The B current can change according to the deviation between devices or the operating condition, so it is judged to be the B current when it is 0.85 to 1.2 times the reference current.

[0093] C current: This is the current measured during the connection or disconnection of the circuit breaker during its introduction or de-connection. The load on the circuit breaker in the test position is greater than the B current due to simple movement, therefore it is a value greater than the B current. For example, the control unit 50 can determine the C current if the current of the power unit 20 is more than 1.5 times the reference current, i.e., the B current. Alternatively, the upper limit can be set to less than 0.95 times the motor overcurrent or abnormal state current, i.e., the D current.

[0094] D current: This is the reference current used to determine abnormal conditions where the circuit breaker's lead-in and lead-out cannot be achieved normally, or the overcurrent condition of the power unit 20. It can be changed according to the circuit breaker's capacity; for example, a 120V reference current of 1.9A can be set as the D current.

[0095] As described above, during the movement of the circuit breaker, the current of the power unit 20 is measured by the sensor unit 40 and used as the reference current (B current). The A current or C current is measured by the relative ratio, thereby enabling a more accurate understanding of the state of the lead-in and lead-out device 1.

[0096] First, the control operation of the control unit 50 for introducing the circuit breaker introduction action of the lead-out device 1 is as follows.

[0097] The following embodiments are examples of the control operation of the control unit 50 of the lead-in / lead-out device 1 with a padlock.

[0098] In order to introduce the circuit breaker, the control unit 50 moves the circuit breaker from the disconnected position to the test position in order to first connect the circuit breaker to the distribution frame.

[0099] After a constant time elapses following the start of the circuit breaker's movement, the control unit 50 measures the B current, i.e., the reference current. This is because current noise may occur at the very beginning of the operation of the operating unit 20; therefore, a noise-free reference current is measured after an initial constant time elapses. For example, three seconds after the start of the circuit breaker's movement, the sensor unit 40 measures the current of the power unit 20 over a period of one second and sets it as the reference current, i.e., the B current.

[0100] If, after measuring the reference current, the circuit breaker completes its movement and becomes locked in the padlock, the circuit breaker will not move further. Then, an overcurrent (D current) occurs, and the control unit 50 temporarily stops the operation of the power unit 20. After the temporary stop, the power unit 20 is rotated in the opposite direction for a constant time and then stopped, and then rotated in the original direction for a constant time again to check if the circuit breaker movement is complete. When the power unit 20 rotates in the input or output direction, even under a rotating load, the padlock must automatically disengage once the input or output is complete. However, if the padlock fails to disengage automatically, the rotating load on the handle must be removed, so the power unit 20 is rotated in the opposite direction and then rotated back to the original direction. For example, if the circuit breaker movement is complete and locked in the padlock, the power unit 20 is rotated in the opposite direction for two seconds and then stopped, and then rotated back to the original direction for four seconds to confirm that the circuit breaker movement is complete.

[0101] In this way, when additional rotation occurs after the occurrence of current D, the A current, which is smaller than current B, is measured for a constant time. For example, if this constant time exceeds two seconds, it is determined that the movement from the separation position to the test position has been completed. If the circuit breaker movement is completed when the lead-in / lead-out device 1 has a TOC (Truck operated cell switch), a defined TOC signal is generated. Therefore, if the control unit 50 measures the A current for a constant time or more and a TOC signal is generated, it determines that the movement of the circuit breaker to the test position has been completed.

[0102] If the time it takes for the circuit breaker to move to the test position, i.e., the time it takes for the current from B to D to A to change is a constant time, for example, less than 30 seconds, it can be judged that the normal movement has been completed. If it takes more than 30 seconds, it can be judged that an error has occurred in the lead-out device 1 or the power unit 20.

[0103] If the movement to the test position for introducing the circuit breaker has been completed, the control unit 50 controls the power unit 20 to start the circuit breaker engagement.

[0104] If movement from the test position to the closed position begins in order to close the circuit breaker, the control unit 50 remeasures the reference current after a constant time. For example, the reference current B is remeasured for one second after five seconds following the start of the movement of the circuit breaker to the closed position.

[0105] If the movement from the test position to the connection position ends and the connection of the circuit breaker and the distribution panel begins, an additional load is applied to the power unit 20, so the current in the power unit 20 changes from the B current (reference current) to the C current, which is higher than the B current.

[0106] Furthermore, as described above, if the circuit breaker and the distribution panel are connected, a current D is generated and then changes to a current A. If a current D is generated, the power unit 20 is temporarily stopped, rotated in the opposite direction, and then rotated back to the original direction.

[0107] Therefore, when the current changes from B to C and then to A via D, it is determined that the circuit breaker's movement from the test position to the engagement position and the engagement operation are completed, and the control unit 50 can stop the operation of the power unit 20. If, including the TOC condition, the A current remains constant for more than a certain period of time and a TOC signal is generated, it can be determined that the circuit breaker engagement operation has been completed.

[0108] Conversely, the control unit 50, which is used to introduce the circuit breaker lead-out operation of the lead-out device 1, is operated as follows.

[0109] First, in order to bring out the circuit breaker, the control unit 50 activates the power unit 20 to disconnect the circuit breaker from the power distribution frame and move it to the test position.

[0110] The control unit 50 measures the B current, i.e., the reference current, after a constant time elapsed following the start of the circuit breaker's disconnection. For example, the B current is measured for one second after 25 seconds following the start of the circuit breaker's disconnection. Since an inrush current occurs during the initial stage of movement and a current inflection point occurs during the shutter opening interval, the reference current, i.e., the B current, is measured after a constant time in order to measure the B current that occurs during simple movement.

[0111] If the circuit breaker has moved to the test position after the reference current is measured, it will lock in the padlock and generate a D current. The control unit 50 will temporarily stop the operation of the power unit 20. After the temporary stop, the power unit 20 will be rotated in the opposite direction for a constant time and then stopped. It will then be rotated back in the original direction for a constant time to confirm whether the movement of the circuit breaker is complete. For example, the power unit 20 may be rotated in the opposite direction for two seconds and then stopped. It may then be rotated back in the original direction for four seconds to confirm that the movement of the circuit breaker is complete.

[0112] As mentioned above, if the circuit breaker has completed moving to the test position, and the A current continues for more than two seconds after the current changes to A current and a TOC signal is generated when the lead-out device 1 includes TOC, it can also be confirmed that the circuit breaker has completed moving to the test position.

[0113] In order to move the circuit breaker from the test position to the disconnect position after it has been moved to the test position, the control unit 50 causes the power unit 20 to restart.

[0114] If the circuit breaker movement begins, the current is measured during a constant time, for example, five seconds followed by one second, thereby resetting the B current, i.e., the reference current.

[0115] Furthermore, as mentioned earlier, if a current D occurs followed by a current A, it is determined that the movement to the separation position has been completed. Additionally, in cases including the current TOC, it can be determined that the circuit breaker movement is only complete when both the current TOC and the current A occur together.

[0116] In this way, if the circuit breaker has moved from the test position to the disconnect position, it is determined that the take-out action has been completed and the take-out action is interrupted.

[0117] The next embodiment is an example of the control operation of the control unit 50 of the lead-in / lead-out device 1 without a padlock.

[0118] Compared to the case with a lock, the time it takes for movement to complete at each position cannot be sensed when there is no padlock. Therefore, the completion of the introduction or withdrawal action can only be detected by changes in current or by a TOC switch.

[0119] In the absence of the padlock-in / out device 1, the currents A, B, C, and D are used as a reference to determine the operating state of the power unit 20 and to control the power unit 20.

[0120] If the introduction begins during the induction operation, that is, the circuit breaker begins to move from the disconnected position to the connected position in order to engage, the B current is measured after a constant time has elapsed. For example, the current of the power unit 20 is measured during a one-second period 14 seconds after the movement begins and is set as the reference current, i.e., the B current.

[0121] Since there is no padlock, the circuit breaker moves continuously from the disconnected position to the test position, and from the test position to the connected position and begins to connect with the distribution panel.

[0122] During the movement, the reference current, B current, is measured. If the circuit breaker and the distribution panel start to engage, a load is generated, and therefore the C current is generated.

[0123] If the circuit breaker and the distribution panel are connected, the current C changes to current A. The control unit 50 determines that the circuit breaker has completed its operation after a constant time has elapsed since the current A was measured, and thus the operation of the power unit 20 can be interrupted.

[0124] However, if the current does not change to A within a constant time, it is determined that the introduction action has not been completed normally, and the control unit 50 can interrupt the operation of the power unit 20 and generate an error message.

[0125] In summary, if the reference current (current B) is measured after a constant time following the start of the circuit breaker's activation, and the current changes from current B to current C, and then changes back to current A, then it is determined that the circuit breaker has completed its movement from the disconnected position to the test position, and from the test position to the connected position, thus completing the activation action.

[0126] In the case of triggering, the B current is measured after a constant time has elapsed since the triggering begins.

[0127] The circuit breaker moves continuously from the engaged position to the test position, and from the test position to the disengaged position. If the movement to the disengaged position is completed, the power unit 20 idles and detects current A. Therefore, if a constant time elapses after the current changes from current B to current A, the control unit determines that the circuit breaker's outgoing action has been completed, thereby interrupting the operation of the power unit 20.

[0128] Similar to the introduction operation, if the current does not change to A within a constant time, it is determined that the extraction operation has not been completed normally, and the control unit 50 can also interrupt the operation of the power unit 20 and generate an error message.

[0129] In summary, during the lead-out operation, after a constant time has elapsed since the start of the circuit breaker's lead-out operation, the current B is measured. It is determined that the lead-out operation has been completed after a constant time has elapsed since the current B changes to the current A, thereby interrupting the operation of the power unit 20.

[0130] Figure 4 This is a schematic flowchart of the introduction method of the introduction device according to another preferred embodiment of the present invention.

[0131] The introduction method of the present invention can be executed by a control unit including one or more processors and a memory.

[0132] If the operation starts (S110), the control unit can measure the B current, i.e. the reference current, through the sensor unit after a constant time following the start of the movement of the circuit breaker from the disconnected position to the test position (S120).

[0133] If the movement of the circuit breaker continues and a current smaller than the reference current, i.e., A current, is measured, then it is determined that the movement of the circuit breaker to the test position has been completed (S130).

[0134] As described above, if the current D is measured after measuring current B, and the current A is measured again for a constant time, it is determined that the movement of the circuit breaker to the test position has been completed. Similarly, in the case of TOC, the generation of the TOC signal and the measurement of current A are achieved simultaneously.

[0135] If the circuit breaker has moved to the test position, it will start moving from the test position to the connection position (S140). If the circuit breaker and the distribution panel are connected and the movement to the connection position is completed, it is determined that the initiation action has been completed (S150).

[0136] As described above, after a constant time elapsed following the initial movement of the circuit breaker to the closed position, the B current (reference current) is measured. When the circuit breaker and the distribution panel begin to close, the current changes to the C current, and then to the D current when the circuit breaker closes, before finally changing back to the A current.

[0137] Figure 5 This is a schematic flowchart of a method for introducing and withdrawing a device according to another preferred embodiment of the present invention.

[0138] The extraction method of the present invention can also be executed by a control unit including one or more processors and memories.

[0139] If the circuit breaker trips (210), the control unit measures the current in the power unit and sets it as the B current, i.e., the reference current (S220).

[0140] If the current in the power unit changes from current B to current D and then to current A, the control unit determines that the connection between the circuit breaker and the distribution panel has been released and the movement to the test position has been completed (S230).

[0141] If the circuit breaker is deactivated, in order to move it out of the distribution frame, the control unit controls the power unit to start moving the circuit breaker to the disconnected position. If the circuit breaker movement starts (S240), the power unit current is measured and reset to the reference current.

[0142] If the circuit breaker starts moving and the current in the power unit changes to current D and then changes back to current A, it can be determined that the movement of the circuit breaker to the disconnect position has been completed and the circuit breaker take-out action has been completed (S250).

[0143] According to the lead-in and lead-out device and control method of the present invention as described above, the current of the power unit measured during the movement of the circuit breaker is set as the reference current, and the lead-in and lead-out state of the circuit breaker is determined by the relative ratio of the reference current and the current current. This has the advantage of being able to more accurately grasp the lead-in and lead-out state of the circuit breaker, thereby enabling more accurate control of the lead-in and lead-out device.

[0144] The scope of protection of this invention is not limited to the embodiments described and expressed above. Furthermore, it should be reiterated that obvious modifications or substitutions within the technical field to which this invention pertains do not limit the scope of protection of this invention.

Claims

1. An inlet / outlet device, characterized in that, include: The bracket includes a bracket body detachably coupled to the power distribution frame along a first direction and a guide profile coupled to the bracket body and extending along the first direction; The power unit includes a power bracket that is movable along the first direction and coupled to the guide profile. The power unit is detachably coupled to the bracket along the first direction and provides power for introducing and withdrawing a circuit breaker housed in the distribution frame. A sensor unit for sensing the state of the power unit; and The control unit, including one or more processors and a memory, controls the power unit; The control unit controls the power unit by knowing the input / output status of the circuit breaker based on the status of the power unit received from the sensor unit.

2. The inlet / outlet device according to claim 1, characterized in that, The sensor unit is a current sensor; The control unit determines the lead-in / lead-out status of the circuit breaker by measuring the current of the power unit through the sensor unit.

3. The inlet / outlet device according to claim 2, characterized in that, The control unit sets the current of the power unit when the circuit breaker is moved by the input and output devices under no load as the reference current, and uses the relative ratio of the reference current and the current of the power unit to determine the input and output status of the circuit breaker.

4. The inlet / outlet device according to claim 3, characterized in that, If the current in the power unit is less than the reference current, the control unit determines that the movement or lead-in / lead-out of the circuit breaker has been completed and the power unit is in an idling state.

5. The inlet / outlet device according to claim 3, characterized in that, If the current in the power unit is greater than the reference current, the control unit determines that the circuit breaker is in the process of being engaged or disengaged.

6. The inlet / outlet device according to claim 3, characterized in that, After a constant time elapses following the start of the circuit breaker movement used to initiate the action, the control unit measures the current of the power unit and sets it as a reference current. If the current of the power unit is less than the reference current, it is determined that the movement of the circuit breaker to the test position has been completed.

7. The inlet / outlet device according to claim 6, characterized in that, After the circuit breaker completes its movement to the test position, the control unit controls the power unit to begin moving the circuit breaker to the closing position. After a constant time, the current of the power unit is measured and reset to a reference current. If the current of the power unit is greater than the reset reference current, it is determined that the circuit breaker is in the process of closing. If the current of the power unit is less than the reference current again during the closing process, it is determined that the closing action of the circuit breaker has been completed and the movement of the circuit breaker to the closing position has been completed.

8. The inlet / outlet device according to claim 3, characterized in that, After a constant time has elapsed since the circuit breaker movement for triggering the action begins, the control unit measures the current of the power unit and sets it as the reference current. If the current of the power unit is less than the reference current, it is determined that the movement of the circuit breaker to the test position has been completed.

9. The inlet / outlet device according to claim 8, characterized in that, After the circuit breaker has moved to the test position, the control unit controls the power unit to move the circuit breaker. After a constant time has elapsed since the start of the circuit breaker's movement, the control unit measures the current of the power unit and resets it to a reference current. If the current of the power unit is less than the reset reference current, it is determined that the movement of the circuit breaker to the separation position has been completed.

10. The inlet / outlet device according to any one of claims 6 to 9, characterized in that, If the current of the power unit reaches or exceeds a preset limit current, the control unit temporarily stops the operation of the power unit, then moves the power unit in the opposite direction and stops it again, and then moves the power unit in the original direction again. If the current of the power unit is less than the reference current, it is determined that the circuit breaker has been engaged, disengaged, or moved.

11. A control method for introducing and extracting a device, characterized in that, The control method for the lead-in / lead-out device is executed by a control unit including one or more processors and a memory, and the control method for the lead-in / lead-out device includes: The step of activating the power unit of the inlet / outlet device for the inlet operation of the circuit breaker; After the movement of the circuit breaker begins, the sensor unit measures the current of the power unit and sets it as a reference current; and If the current in the power unit is less than the reference current, it is determined that the movement of the circuit breaker to the test position has been completed and the power unit is idling.

12. The control method for the introduction and extraction device according to claim 11, characterized in that, After determining that the movement of the circuit breaker to the test position has been completed and the power unit is idling, the method further includes: The step of controlling the power unit to begin moving the circuit breaker to the engagement position; After the circuit breaker restarts its movement, the current in the power unit is measured and reset to the reference current. If the current in the power unit is greater than the reset reference current, it is determined that the circuit breaker is in the engagement operation process; and If the current in the power unit is again less than the reset reference current, it is determined that the circuit breaker's engagement operation has been completed and the circuit breaker's movement to the engagement position has been completed.

13. A control method for introducing and extracting a device, characterized in that, The control method for the lead-in / lead-out device is executed by a control unit including one or more processors and a memory, and the control method for the lead-in / lead-out device includes: The step of activating the power unit of the lead-out device for the outgoing operation of the circuit breaker; After the movement of the circuit breaker begins, the sensor unit measures the current of the power unit and sets it as a reference current; and If the current in the power unit is less than the reference current, it is determined that the step of moving the circuit breaker to the test position has been completed.

14. The control method for the introduction and extraction device according to claim 13, characterized in that, After determining that the movement of the circuit breaker to the test position has been completed, the method further includes: The step of activating the power unit for the movement of the circuit breaker; After the circuit breaker restarts its movement, the steps include measuring the current in the power unit and resetting it to a reference current; and If the current in the power unit is less than the reset reference current, it is determined that the movement of the circuit breaker to the disconnect position has been completed and the power unit is idling.

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