A circuit breaker control device with data transmission function and detection method thereof

Abstract

The present invention belongs to the field of power switch control, and relates to a circuit breaker control device, in particular to a circuit breaker control device with a data transmission function and a detection method thereof, comprising a shell, a motor and a transmission mechanism installed in the shell, an output end of the motor connected to the transmission mechanism, the transmission mechanism is used to be connected to a handle of the circuit breaker and can drive the handle to be moved, a controller is installed in the shell, the controller is connected to the control end of the motor, a data transmission interface and a signal interface are respectively arranged in the controller, the signal interface is respectively connected to each phase of the circuit breaker, and is used to detect an electrical signal of the circuit breaker and transmit the electrical signal to the controller, and the data transmission interface is used to be connected to an external device; the transmission mechanism comprises a rotating disk, a gear set and a motor, a square hole is formed in the middle of the rotating disk along the axial direction, and a side end of a square shaft is embedded in the square hole when in use.

Description

Technical Field

[0001] The invention belongs to the field of power switch control and relates to a circuit breaker control device, in particular to a circuit breaker control device with a data transmission function and a detection method thereof. Background Art

[0002] With the development of informatization and intelligence, smart grids are becoming more and more perfect, and small circuit breakers with remote control functions have gradually been used. For example, the patent No. "201810434816.3" has disclosed an "N-pole circuit breaker unit", whose structure includes a shell, a motor, a gear set and a trip trigger rod installed in the shell. During the installation process, the circuit breaker is connected through contact terminals A and B to achieve the function of opening and closing. For example, the self-resetting over- and under-voltage protector, which has been clearly specified in JGJ242-2011 "Residential Building Design Code", has been used in power-consuming devices that require unattended operation, such as circuit breakers for prepaid meters or photovoltaic grid-connected circuit breakers.

[0003] However, the above-mentioned device has certain deficiencies in use, for example, 1. The above-mentioned device does not have a data transmission function, cannot provide adaptive remote control or intelligent control, can only be used in conjunction with an intelligent circuit breaker, and cannot transmit information to the monitoring background to facilitate understanding of the status of the circuit breaker; 2. It is not easy to repair and replace. When the customer needs different over-voltage or under-voltage voltages or delay time parameters, the entire product can only be disassembled again and the circuit board burn-in program is performed; 3. There is a problem of long measurement cycle time. For example, the photovoltaic grid-connected circuit breaker complies with the "Q GDW 1972-2013 Technical Specifications for Distributed Photovoltaic Grid-Connected Special Low-voltage Circuit Breakers", in which the overvoltage, undervoltage, and loss of voltage action delay time and recovery delay time are 10s. In this way, for a 4P product, each phase is tested for overvoltage, overvoltage recovery, undervoltage, undervoltage recovery, loss of voltage, and loss of voltage recovery time, which requires a delay time of at least 180s, and the self-resetting over- and undervoltage protector must meet the "JBT 12762-2015 Self-recovering over- and under-voltage protector》 The over-voltage action delay is 15s, the over-voltage recovery time is 60s, the under-voltage action time is 5s, and the under-voltage recovery time is 60s. Each phase is tested for over-voltage, over-voltage recovery, under-voltage, and under-voltage recovery. The delay time of one unit is at least 420s. The detection time is too long, which seriously affects the production efficiency of the product. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a circuit breaker control device with a reasonable structure, a data transmission function and the ability to realize remote control.

[0005] The technical solution adopted by the present invention is:

[0006] A circuit breaker control device with a data transmission function comprises a shell, a motor and a transmission mechanism are installed in the shell, the output end of the motor is connected to the transmission mechanism, the transmission mechanism is used to connect to the handle of the circuit breaker and can drive the handle to move, and is characterized in that: a controller is installed in the shell, the controller is connected to the control end of the motor, a data transmission interface and a signal interface are respectively arranged in the controller, the signal interface is respectively connected to each phase of the circuit breaker, and is used to detect the electrical signal of the circuit breaker and transmit the electrical signal to the controller, and the data transmission interface is used to connect to an external device.

[0007] Moreover, the transmission mechanism includes a rotating disk, a gear set and a motor. A square hole is made in the middle of the rotating disk along the axial direction. When in use, one end of a square shaft is embedded in the square hole, and the other end of the square shaft is connected to the handle of the circuit breaker. The rotating disk and the output end of the motor are transmitted through the gear set.

[0008] Moreover, a wiring hole is formed at a position of the shell corresponding to the data transmission interface, and a blocking piece is movably embedded in the wiring hole.

[0009] Example:

[0010] 1. Application A detection method for a circuit breaker control device with a data transmission function includes a circuit breaker to be detected, a circuit breaker control device and a detection device; the detection device is built with a central control module, a data transmission module and a power output module, the data transmission module and the power output module are respectively connected to the central control module, the data transmission module is provided with a data transmission terminal, and the power output module is provided with a signal terminal;

[0011] The detection method comprises the following steps:

[0012] Step 1: First, perform a functional test on the circuit breaker control device to ensure that the circuit breaker control device functions normally;

[0013] Step 2: Connect a circuit breaker control device with normal functions to the circuit breaker to be tested and the testing equipment respectively, connect the rotating disk of the circuit breaker control device to the handle of the circuit breaker through a square shaft, connect the signal interface of the circuit breaker control device to each phase of the circuit breaker respectively, connect each phase of the circuit breaker to the power output module of the testing equipment synchronously, and connect the data transmission interface of the circuit breaker control device to the data transmission module of the testing equipment;

[0014] Step 3: Switch the signal to connect the corresponding phases of the circuit breaker control device, circuit breaker and detection device to be detected respectively;

[0015] Step 4: The power output module sends an electrical signal to the circuit breaker, and synchronously sends the same electrical signal to the signal interface of the circuit breaker control device;

[0016] Step 5: The circuit breaker control device collects and analyzes the corresponding electrical signals, and converts the analysis results into data information and outputs them through the data transmission interface;

[0017] Step 6: The data transmission module of the detection equipment collects the data information output by the data transmission interface and outputs the data information to the central control module. The central control module compares the data information with the electrical signal sent by the power output module to determine whether the function of the circuit breaker control device is normal.

[0018] Step 7: Switch the signal to connect the circuit breaker control device, circuit breaker and other phases of the detection device to be detected in sequence, and then repeat steps 4-6 until all phases are detected.

[0019] Furthermore, in step 1, the function test of the circuit breaker control device includes the following steps:

[0020] Step 1: Connect the signal interface of the circuit breaker control device to the power output module of the detection equipment through the signal terminal, and connect the data transmission interface of the circuit breaker control device to the data transmission module of the detection equipment through the data transmission terminal;

[0021] Step 2: The power output module outputs an electrical signal to the circuit breaker control device;

[0022] Step 3: The circuit breaker control device collects the corresponding electrical signal and transmits it to the controller. The controller processes the collected signal and converts it into data information and outputs it to the signal interface. The signal interface transmits the data information to the data transmission module of the detection device.

[0023] Step 4: The data transmission module of the detection device collects the data information output by the data transmission interface, and outputs the data information to the central control module, and the central control module compares the data information with the electrical signal sent by the power output module;

[0024] Step 5: If the difference between the data information and the electrical signal sent by the power output module is less than the lower limit of the accuracy allowable value, it is determined that the function of the circuit breaker control device is normal;

[0025] Step 6: If the difference between the data information and the electrical signal sent by the power output module is greater than or equal to the lower limit of the accuracy allowable value and less than or equal to the upper limit of the accuracy allowable value, the central control module outputs a correction program, which is transmitted to the controller of the circuit breaker control device. After the correction is completed, steps 2-4 are repeated until the difference between the data information and the electrical signal sent by the power output module is less than the lower limit of the accuracy allowable value, and it is determined that the function of the circuit breaker control device is normal;

[0026] Step 7: If the difference between the data information and the electrical signal sent by the power output module is greater than or equal to the upper limit of the accuracy allowable value, it is determined that the function of the circuit breaker control device is abnormal;

[0027] Step 8: Repeat steps 2-7 to complete the detection of each phase in turn.

[0028] The advantages and positive effects of the present invention are:

[0029] 1. In the present invention, a controller is used to collect signals output by various items of the circuit breaker, and the motor is controlled to start and stop and to rotate forward and reverse according to the corresponding signals, thereby realizing the control of the circuit breaker. The circuit breaker signal interface provided by the controller is connected to various items of the circuit breaker, thereby collecting the signals of the circuit breaker in real time. The data transmission interface is independently provided and can adopt a plug-in structure. When the operator needs to modify the corresponding parameters, he only needs to connect to the external device or the background system through the signal line and burn the program into it, thereby solving the deficiency of the prior art that the whole device needs to be disassembled;

[0030] 2. In the present invention, the wiring hole cooperates with the movable baffle to seal the data transmission interface, which can effectively prevent dust or debris from entering the housing during sealing. When in use, the baffle can be removed to directly connect the signal line;

[0031] 3. In the present invention, the corresponding detection method can replace the shortcomings of the prior art that require waiting for the product delay time. Without waiting for the product delay action, the data in the controller can be directly read to quickly and accurately perform the detection, which not only facilitates the detection process, but also greatly improves the work efficiency and greatly shortens the detection time;

[0032] 4. In the present invention, a corresponding detection method is adopted for the circuit breaker control device, thereby ensuring the reliability of the circuit breaker control device. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of the present invention;

[0034] Figure 2 It is the external structure diagram of the present invention;

[0035] Figure 3 It is a module diagram of the present invention;

[0036] Figure 4 A connection diagram for testing the circuit breaker control device of the present invention;

[0037] Figure 5 for Figure 4 Module diagram of

[0038] Figure 6 This is a connection diagram for detecting a circuit breaker according to the present invention;

[0039] Figure 7 for Figure 6 The module diagram for detecting phases A and N;

[0040] Figure 8 for Figure 6 The module diagram for detecting phases B and N;

[0041] Fig. 9 for Figure 6 Module diagram for detecting C and N phases. DETAILED DESCRIPTION

[0042] The present invention is further described below in conjunction with examples. The following examples are illustrative rather than restrictive, and the protection scope of the present invention cannot be limited by the following examples.

[0043] The present invention can be applied to different embodiments according to different application scenarios, such as external circuit breaker accessories for prepaid electricity meters, circuit breaker accessories for photovoltaic grid-connected devices, self-resetting over- and under-voltage protectors, and other accessories.

[0044] Embodiment 1:

[0045] Taking the photovoltaic grid-connected circuit breaker accessories as an example, it needs to meet the requirements of overvoltage 300V, overvoltage recovery 270V, undervoltage 165V, undervoltage recovery 191V, loss of voltage 0V, loss of voltage recovery 191V, and a delay of 10s for action.

[0046] Since the detection requires full coverage, the following aspects need to be tested. Failure mode 1: Are all components on the controller welded normally, is there any welding leakage, and are the components themselves damaged? Failure mode 2: Are the controller, motor, and gear installed normally, are there any missing installations, wrong installations, etc. Failure mode 3: Is the connection between the circuit breaker control device and the circuit breaker normal, and is there any disconnection? Failure mode 4: Is there any jamming or inability to drive between the circuit breaker control device and the circuit breaker? This problem should be avoided in the design, but in actual production, it may occur due to the consistency of parts.

[0047] When testing the circuit breaker control device alone, the first two items should be tested. After assembling the circuit breaker, the last two items should be tested.

[0048] A circuit breaker control device with a data transmission function comprises a housing 5, a motor 7 and a transmission mechanism are installed in the housing, the output end of the motor is connected to the transmission mechanism, the transmission mechanism is used to connect to the handle of the circuit breaker and can drive the handle to be moved. The innovation of the present invention lies in that a controller 4 is installed in the housing, the controller is connected to the control end of the motor, a data transmission interface 9 and a signal interface 8 are respectively arranged in the controller, the signal interface is respectively connected to each phase of the circuit breaker, and is used to detect the electrical signal of the circuit breaker and transmit the electrical signal to the controller, and the data transmission interface is used to connect to an external device.

[0049] In this embodiment, the transmission mechanism includes a rotating disk 1, a gear set and a motor 3. A square hole 2 is formed in the middle of the rotating disk along the axial direction. When in use, one end of a square shaft is embedded in the square hole, and the other end of the square shaft is connected to the handle of the circuit breaker. The rotating disk and the output end 6 of the motor are transmitted through the gear set.

[0050] In this embodiment, an opening 11 is formed at a position of the housing opposite to the signal interface.

[0051] In this embodiment, a wiring hole 12 is formed at a position of the housing corresponding to the data transmission interface, and a blocking piece is movably embedded in the wiring hole.

[0052] For the detection method of Example 1:

[0053] It includes a circuit breaker to be detected, a circuit breaker control device 10 and a detection device, wherein the circuit breaker includes phase A, phase B, phase C and phase N; the detection device is built with a central control module, a data transmission module and a power output module, the data transmission module and the power output module are respectively connected to the central control module, the data transmission module is provided with a data transmission terminal, and the power output module is provided with a signal terminal;

[0054] The detection method comprises the following steps:

[0055] Step 1: First, perform a functional test on the circuit breaker control device to ensure that the circuit breaker control device functions normally;

[0056] In step 1, the function test of the circuit breaker control device includes the following steps:

[0057] Step (1): connecting the signal interface of the circuit breaker control device to the power output module of the detection device through the signal terminal 14, and connecting the data transmission interface of the circuit breaker control device to the data transmission module of the detection device through the data transmission terminal 13;

[0058] The signal wiring terminal and the data transmission wiring terminal both adopt a probe structure.

[0059] Step (2): the power output module outputs electrical signals of 300V voltage and 165V voltage to the circuit breaker control device respectively;

[0060] Step (3): the circuit breaker control device collects the corresponding electrical signal and transmits it to the controller, the controller processes the collected signal and converts it into data information and outputs it to the signal interface, and the signal interface transmits the data information to the data transmission module of the detection device;

[0061] Step (4): The data transmission module of the detection device collects the data information output by the data transmission interface, and outputs the data information to the central control module, and the central control module compares the data information with the electrical signal emitted by the power output module;

[0062] Step (5): If the difference between the data information and the electrical signal sent by the power output module is less than 2%, it is determined that the circuit breaker control device functions normally;

[0063] Step (6): If the difference between the data information and the electrical signal sent by the power output module is greater than or equal to 2% and less than or equal to 5%, the central control module outputs a correction program, and the correction program is transmitted to the controller of the circuit breaker control device. After the correction is completed, steps 2-4 are repeated again until the difference between the data information and the electrical signal sent by the power output module is less than 2%, and it is determined that the function of the circuit breaker control device is normal;

[0064] Step (7): if the difference between the data information and the electrical signal sent by the power output module is greater than or equal to 5%, it is determined that the circuit breaker control device is functioning abnormally;

[0065] Step (8): Repeat steps 2-7 and test the AN phase, BN phase and CN phase in turn.

[0066] The voltage detection circuit uses Ohm's law. The voltage characteristics are linear. Two points can confirm a straight line. Therefore, if the two points are detected correctly, it proves that the entire A-phase voltage detection circuit components are normal and the detection is normal. Due to the extremely fast data transmission speed, this detection time can be completed in about 1 second.

[0067] Then the detection device sets the delay time to 1s through data transmission, and performs the whole process detection of overvoltage action and overvoltage recovery on one phase. After receiving the overvoltage signal, the controller of the circuit breaker control device sends a trip command to the motor after a 1s delay. The motor rotates to drive the gear set to the trip position and then stops. At this time, the signal of the trip is transmitted to the central control module of the detection device through the data transmission interface, and the processor determines that the trip is successful. At this time, the detection device gives the circuit breaker control device a normal voltage signal again. After receiving the voltage signal, the controller 6 of the circuit breaker control device sends a closing command to the motor after a 1s delay. The motor rotates to drive the gear set to the closing position and then stops. At this time, the signal of the closing is transmitted to the processor of the detection device through the data transmission interface, and the processor determines that the closing is successful.

[0068] The above operations can completely eliminate failure mode 1 and failure mode 2, and the full detection time can be shortened to less than 10s.

[0069] For the corresponding failure mode three and failure mode four, the circuit breaker control device needs to be assembled onto the circuit breaker for testing.

[0070] Step 2: Connect a circuit breaker control device with normal functions to the circuit breaker to be detected and the detection equipment respectively, connect the rotating disk of the circuit breaker control device to the handle of the circuit breaker through a square shaft, connect the signal interface of the circuit breaker control device to the A phase 15, B phase, C phase and N phase 16 of the circuit breaker respectively, connect the A phase 15 and N phase 16 of the circuit breaker to the power output module of the detection equipment synchronously, and connect the data transmission interface of the circuit breaker control device to the data transmission module of the detection equipment;

[0071] Step 3: Switch the signal to connect the corresponding A phase and N phase of the circuit breaker control device, circuit breaker and detection device to be detected respectively;

[0072] Step 4: The power output module sends an electrical signal to the circuit breaker, and synchronously sends the same electrical signal to the signal interface of the circuit breaker control device;

[0073] Step 5: The circuit breaker control device collects and analyzes the corresponding electrical signals, and converts the analysis results into data information and outputs them through the data transmission interface;

[0074] Step 6: The data transmission module of the detection equipment collects the data information output by the data transmission interface and outputs the data information to the central control module. The central control module compares the data information with the electrical signal sent by the power output module to determine whether the function of the circuit breaker control device is normal.

[0075] Step 7: Switch the signal to connect the corresponding B phase and N phase of the circuit breaker control device, circuit breaker and detection device to be detected, and then repeat steps 4-6;

[0076] Switch the signal to connect the C phase and N phase of the circuit breaker control device, circuit breaker and detection device to be detected, and then repeat steps 4-6.

[0077] If the detection is normal, it proves that the power connection between the electric operating mechanism and the circuit breaker is normal (failure mode three).

[0078] In order to detect whether the connection between the circuit breaker control device and the circuit breaker is normal and to prevent the square shaft and the circuit breaker from being stuck or unable to drive (failure mode 4), the square shaft of the circuit breaker control device and the handle of the circuit breaker can be assembled and then tested as follows:

[0079] The data transmission method is adopted, the delay time is set to 1s, and the whole process of overvoltage action and overvoltage recovery is detected for any phase. After receiving the overvoltage signal, the controller of the circuit breaker control device sends a trip command to the motor after a 1s delay. The motor rotates to drive the gear set to rotate, and the gear set drives the rotating disk, square shaft and handle to run synchronously until the rotating disk rotates to the trip position and stops rotating. At this time, the signal of the trip is transmitted to the central control module of the detection device through the data transmission interface, and the processor determines that the trip is successful. At this time, the detection device gives the circuit breaker control device a normal voltage signal again. After receiving the voltage signal, the controller of the circuit breaker control device sends a closing command to the motor after a 1s delay. The motor rotates to drive the gear set to rotate to the closing position and stops rotating. At this time, the signal of the closing is transmitted to the processor of the detection device through the data transmission interface, and the processor determines that the closing is successful.

[0080] In addition, this time the circuit breaker is driven to close and open, and it can also be determined whether it is unable to be driven or stuck (failure mode four).

[0081] In the present invention, a controller is used to collect signals output by various circuit breakers, and the start and stop and forward and reverse rotation of the motor are controlled according to the corresponding signals, thereby realizing the control of the circuit breaker. The circuit breaker signal interface provided by the controller is connected to each phase of the circuit breaker, thereby collecting the signals of the circuit breaker in real time. The data transmission interface is independently provided and can adopt a plug-in structure. When the operator needs to modify the corresponding parameters, it only needs to connect to the external device or the background system through the signal line and burn the program into it, thereby solving the deficiency of the prior art that the overall disassembly is required, and can effectively facilitate the detection process, greatly improve the work efficiency, and greatly shorten the detection time.

[0082] Embodiment 2:

[0083] Take the external circuit breaker for prepaid electricity meters as an example:

[0084] A circuit breaker control device with a data transmission function comprises a housing, a motor and a transmission mechanism are installed in the housing, the output end of the motor is connected to the transmission mechanism, the transmission mechanism is used to connect to the handle of the circuit breaker and can drive the handle to be moved. The innovation of the present invention lies in that a controller is installed in the housing, the controller is connected to the control end of the motor, a data transmission interface and a signal interface are respectively arranged in the controller, the signal interface is respectively connected to each phase of the circuit breaker, and is used to detect the electrical signal of the circuit breaker and transmit the electrical signal to the controller, and the data transmission interface is used to connect to an external device.

[0085] In this embodiment, the controller is further provided with a control signal interface and a feedback signal interface, and the control signal interface and the feedback signal interface are respectively connected to the control line and the feedback line of the prepaid electricity meter.

[0086] In this embodiment, the transmission mechanism includes a rotating disk, a gear set and a motor. A square hole 2 is formed in the middle of the rotating disk along the axial direction. When in use, one end of a square shaft is embedded in the square hole, and the other end of the square shaft is connected to the handle of the circuit breaker. The rotating disk and the output end of the motor are transmitted through the gear set.

[0087] In this embodiment, an opening is formed at a position of the housing opposite to the signal interface.

[0088] In this embodiment, a wiring hole is formed at a position of the housing corresponding to the data transmission interface, and a blocking piece is movably embedded in the wiring hole.

[0089] Detection method for Example 2:

[0090] It includes a circuit breaker to be detected, a circuit breaker control device and a detection device; the detection device is built with a central control module, a data transmission module and a power output module, the data transmission module and the power output module are respectively connected to the central control module, the data transmission module is provided with a data transmission terminal, the power output module is provided with a signal terminal, the signal terminal includes a power signal terminal and a control signal terminal, the power output module provides power for the motor of the circuit breaker control device via the power signal terminal, and the power output module outputs a low-level or high-level electrical signal via the control signal terminal.

[0091] The detection method comprises the following steps:

[0092] Step 1: First, perform a functional test on the circuit breaker control device to ensure that the circuit breaker control device functions normally;

[0093] In step 1, the function test of the circuit breaker control device includes the following steps:

[0094] Step (1): connecting the signal interface of the circuit breaker control device to the power output module of the detection device through the power signal terminal and the control signal terminal respectively, and connecting the data transmission interface of the circuit breaker control device to the data transmission module of the detection device through the data transmission terminal;

[0095] The signal wiring terminal and the data transmission wiring terminal both adopt a probe structure.

[0096] Step (2): the power output module outputs corresponding voltage signals to the circuit breaker control device in sequence, and at the same time outputs a high level of the closing control signal through the control signal terminal;

[0097] Step (3): the circuit breaker control device collects the corresponding voltage signal and control signal and transmits them to the controller, the controller processes the collected signal and converts it into data information and outputs it to the signal interface, and the signal interface transmits the data information to the data transmission module of the detection device;

[0098] Step (4): The data transmission module of the detection device collects the data information output by the data transmission interface, and outputs the data information to the central control module, and the central control module compares the data information with the electrical signal emitted by the power output module;

[0099] Step (5): If the difference between the data information and the electrical signal sent by the power output module is less than 5%, it is determined that the circuit breaker control device functions normally;

[0100] Step (6): If the difference between the data information and the electrical signal sent by the power output module is greater than or equal to 5%, it is determined that the function of the circuit breaker control device is abnormal;

[0101] Step (7): Repeat steps 2-6 and test each phase in turn.

[0102] Due to the extremely fast data transmission speed, this phase detection time can be completed in about 1 second.

[0103] Then the detection device sets the delay time to 1s through data transmission, and performs full-process closing and opening detection on one of the items. After receiving the opening signal, the controller of the circuit breaker control device sends an opening command to the motor after a 1s delay. The motor rotates to drive the gear set to the opening position and then stops. At this time, the signal of the opening is transmitted to the central control module of the detection device through the data transmission interface, and the processor determines that the opening is successful. At this time, the detection device gives the circuit breaker control device a closing signal again. After receiving the current signal, the controller of the circuit breaker control device sends a closing command to the motor after a 1s delay. The motor rotates to drive the gear set to the closing position and then stops. At this time, the signal of the closing is transmitted to the processor of the detection device through the data transmission interface, and the processor determines that the closing is successful.

[0104] The above operations can completely eliminate failure mode 1 and failure mode 2, and the full detection time can be shortened to less than 10s.

[0105] For the corresponding failure mode three and failure mode four, the circuit breaker control device needs to be assembled onto the circuit breaker for testing.

[0106] Step 2: Connect a circuit breaker control device with normal functions to the circuit breaker to be tested and the testing equipment respectively, connect the rotating disk of the circuit breaker control device to the handle of the circuit breaker through a square shaft, connect the signal interface of the circuit breaker control device to each phase of the circuit breaker respectively, connect each phase of the circuit breaker to the power output module of the testing equipment synchronously, and connect the data transmission interface of the circuit breaker control device to the data transmission module of the testing equipment;

[0107] Step 3: Switch the signal to connect the corresponding A phase and N phase of the circuit breaker control device, circuit breaker and detection device to be detected respectively;

[0108] Step 4: The power output module sends an electrical signal to the circuit breaker, and synchronously sends the same electrical signal to the signal interface of the circuit breaker control device;

[0109] Step 5: The circuit breaker control device collects and analyzes the corresponding electrical signals, and converts the analysis results into data information and outputs them through the data transmission interface;

[0110] Step 6: The data transmission module of the detection equipment collects the data information output by the data transmission interface and outputs the data information to the central control module. The central control module compares the data information with the electrical signal sent by the power output module to determine whether the function of the circuit breaker control device is normal.

[0111] Step 7: Switch the signal to connect the corresponding B phase and N phase of the circuit breaker control device, circuit breaker and detection device to be detected, and then repeat steps 4-6;

[0112] Switch the signal to connect the C phase and N phase of the circuit breaker control device, circuit breaker and detection device to be detected, and then repeat steps 4-6.

[0113] If the detection is normal, it proves that the power connection between the electric operating mechanism and the circuit breaker is normal (failure mode three).

[0114] In order to detect whether the connection between the circuit breaker control device and the circuit breaker is normal and to prevent the square shaft and the circuit breaker from being stuck or unable to drive (failure mode 4), the square shaft of the circuit breaker control device and the handle of the circuit breaker can be assembled and then tested as follows:

[0115] Using the data transmission method, the delay time is set to 1s, and the whole process of closing and opening detection is performed on any phase. After the controller of the circuit breaker control device receives the opening control signal, it will send an opening command to the motor after a delay of 1s. The motor rotation drives the gear set to rotate, and the gear set drives the rotating disk, square shaft and handle to run synchronously until the rotating disk rotates to the opening position and stops rotating. At this time, the signal of the opening is transmitted to the central control module of the detection device through the data transmission interface, and the processor determines that the opening is successful. At this time, the detection device gives the circuit breaker control device a closing control signal again. After the controller of the circuit breaker control device receives the current signal, it will send a closing command to the motor after a delay of 1s. The motor rotation drives the gear set to rotate to the closing position and stops rotating. At this time, the signal of the closing is transmitted to the processor of the detection device through the data transmission interface, and the processor determines that the closing is successful.

[0116] In addition, this time the circuit breaker is driven to close and open, and it can also be determined whether it is unable to be driven or stuck (failure mode four).

[0117] In the present invention, a controller is used to collect signals output by various items of the circuit breaker, and the start and stop and forward and reverse rotation of the motor are controlled according to the corresponding signals, thereby realizing the control of the circuit breaker. The circuit breaker signal interface provided by the controller is connected to various items of the circuit breaker, thereby collecting the signals of the circuit breaker in real time. The data transmission interface is independently provided and can adopt a plug-in structure. When the operator needs to modify the corresponding parameters, it only needs to connect to the external device or the background system through the signal line and burn the program into it, thereby solving the deficiency of the prior art that the whole disassembly is required, and can effectively facilitate the detection process, greatly improve the work efficiency, and greatly shorten the detection time.

[0118] The device can also be applied to other embodiments such as molded case circuit breakers, and the electrical signals collected by the device may include current and voltage signals.

Claims

1. A circuit breaker control device with data transmission function, comprising a housing, a motor and a transmission mechanism installed in the housing, the output end of the motor is connected to the transmission mechanism, the transmission mechanism is used to connect to the handle of the circuit breaker to drive the handle to move, characterized in that: A controller is installed in the housing, and the controller is connected to the control end of the motor. A data transmission interface and a signal interface are respectively provided in the controller. The signal interface is respectively connected to each phase of the circuit breaker and is used to detect the electrical signal of the circuit breaker and transmit the electrical signal to the controller. The data transmission interface is used to connect to an external device; The detection method includes a circuit breaker to be detected, a circuit breaker control device and a detection device; the detection device is built with a central control module, a data transmission module and a power output module, the data transmission module and the power output module are respectively connected to the central control module, the data transmission module is provided with a data transmission terminal, and the power output module is provided with a signal terminal; the detection method includes the following steps: Step 1: First, perform a functional test on the circuit breaker control device to ensure that the circuit breaker control device functions normally; Step 2: Connect a circuit breaker control device with normal functions to the circuit breaker to be tested and the testing equipment respectively, connect the rotating disk of the circuit breaker control device to the handle of the circuit breaker through a square shaft, connect the signal interface of the circuit breaker control device to each phase of the circuit breaker respectively, connect each phase of the circuit breaker to the power output module of the testing equipment synchronously, and connect the data transmission interface of the circuit breaker control device to the data transmission module of the testing equipment; Step 3: Switch the signal to connect the corresponding phases of the circuit breaker control device, circuit breaker and detection device to be detected respectively; Step 4: The power output module sends an electrical signal to the circuit breaker, and synchronously sends the same electrical signal to the signal interface of the circuit breaker control device; Step 5: The circuit breaker control device collects and analyzes the corresponding electrical signals, and converts the analysis results into data transmission information and outputs them through the data transmission interface; Step 6: The data transmission module of the detection equipment collects the data transmission information output by the data transmission interface, and outputs the data transmission information to the central control module, which compares the data transmission information with the electrical signal sent by the power output module to determine whether the function of the circuit breaker control device is normal; Step 7: Switch the signal to connect the circuit breaker control device, circuit breaker and other phases of the detection device to be detected in sequence, and then repeat steps 4-6 until all phases are detected.

2. A circuit breaker control device with data transmission function according to claim 1, characterized in that: The transmission mechanism includes a rotating disk, a gear set and a motor. A square hole is formed in the middle of the rotating disk along the axial direction. When in use, one end of a square shaft is embedded in the square hole. The other end of the square shaft is connected to the handle of the circuit breaker. The rotating disk and the output end of the motor are transmitted through the gear set.

3. A circuit breaker control device with data transmission function according to claim 1, characterized in that: A wiring hole is formed at a position of the shell corresponding to the data transmission interface, and a blocking piece is movably embedded in the wiring hole.

4. The detection method of a circuit breaker control device with data transmission function according to claim 1, characterized in that: In step 1, the function test of the circuit breaker control device includes the following steps: Step 1: Connect the signal interface of the circuit breaker control device to the power output module of the detection equipment through the signal terminal, and connect the data transmission interface of the circuit breaker control device to the data transmission module of the detection equipment through the data transmission terminal; Step 2: The power output module outputs an electrical signal to the circuit breaker control device; Step 3: The circuit breaker control device collects the corresponding electrical signal and transmits it to the controller. The controller processes the collected signal and converts it into data transmission information and outputs it to the signal interface. The signal interface transmits the data transmission information to the data transmission module of the detection device. Step 4: The data transmission module of the detection device collects the data transmission information output by the data transmission interface, and outputs the data transmission information to the central control module, and the central control module compares the data transmission information with the electrical signal emitted by the power output module; Step 5: If the difference between the data transmission information and the electrical signal sent by the power output module is less than the lower limit of the accuracy allowable value, it is determined that the function of the circuit breaker control device is normal; Step 6: If the difference between the data transmission information and the electrical signal sent by the power output module is greater than or equal to the lower limit of the accuracy allowable value, and less than or equal to the upper limit of the accuracy allowable value, the central control module outputs a correction program, and the correction program is transmitted to the controller of the circuit breaker control device. After the correction is completed, steps 2-4 are repeated again until the difference between the data transmission information and the electrical signal sent by the power output module is less than the lower limit of the accuracy allowable value, and it is determined that the function of the circuit breaker control device is normal; Step 7: If the difference between the data transmission information and the electrical signal sent by the power output module is greater than or equal to the upper limit of the accuracy allowable value, it is determined that the function of the circuit breaker control device is abnormal; Step 8: Repeat steps 2-7 to complete the detection of each phase in turn.

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