Circuit breaker trip test device and test method

Abstract

The present invention discloses a circuit breaker tripping test device and test method, comprising an intelligent test terminal, multiple circuit breakers, and a power supply. The intelligent test terminal comprises a control module and a verification module, wherein the control module is connected to the verification module, and the circuit breaker is connected to the control module and the verification module respectively. The verification module is used to send a verification signal to the circuit breaker to be tested, and receive a confirmation signal returned by the circuit breaker to be tested, and then send the confirmation signal to the control module. After receiving the confirmation signal, the control module sends a tripping signal to the circuit breaker to be tested. The circuit breaker to be tested responds to the tripping signal and sends a feedback signal to the control module. The control module confirms whether the circuit breaker to be tested is tripped normally based on the feedback signal. Before sending the tripping signal to the circuit breaker to be tested, the verification signal is sent to the circuit breaker to be tested through the verification module to verify the address of the circuit breaker to be tested, thereby avoiding sending a tripping signal to the wrong circuit breaker, which may lead to confusing and inaccurate test results.

Description

Technical Field

[0001] The present invention relates to electric power technology, and in particular to a circuit breaker tripping test device and a test method. Background Art

[0002] Circuit breakers are an important part of the electrical industry and have been widely used. When the electrical circuit is working normally, the circuit breaker can achieve functions such as power outage, power supply and circuit conversion by closing or disconnecting the circuit that supplies electrical energy. When the electrical circuit has abnormalities such as overload and short circuit, the circuit breaker will trip to cut off the electrical circuit to avoid circuit failures that endanger the safety of workers and the normal operation of equipment.

[0003] To improve the load capacity of the power system, the load system needed to be modified. This load system modification project faced the pressure of a short timeframe and a heavy workload. As construction materials gradually arrived, complex site conditions and long secondary wiring connections led to confusing and inaccurate test results. Summary of the Invention

[0004] The present invention provides a circuit breaker tripping test device and a test method, which can avoid the problem of sending a tripping signal to an erroneous circuit breaker, resulting in confusing and inaccurate test results.

[0005] In a first aspect, the present invention provides a circuit breaker tripping test device, comprising:

[0006] An intelligent test terminal, comprising a control module and a verification module, wherein the control module is connected to the verification module;

[0007] a plurality of circuit breakers, each of which is connected to the control module and the verification module;

[0008] a power supply, the power supply being connected to the intelligent test terminal and the circuit breaker respectively to supply power to the intelligent test terminal and the circuit breaker;

[0009] The verification module is used to send a verification signal to the circuit breaker to be tested, receive a confirmation signal returned by the circuit breaker to be tested, and then send the confirmation signal to the control module;

[0010] After receiving the confirmation signal, the control module sends a disconnection signal to the circuit breaker to be tested;

[0011] The circuit breaker to be tested responds to the switching-off signal and sends a feedback signal to the control module. The control module confirms whether the circuit breaker to be tested is normally switched off based on the feedback signal.

[0012] Optionally, the verification module is an RS485 communication module.

[0013] Optionally, the circuit breaker is an intelligent circuit breaker or a trip circuit breaker.

[0014] Optionally, when the circuit breaker is a tripping circuit breaker, the circuit breaker tripping test device further includes a plurality of branch devices, wherein the branch devices are respectively connected to the control module and the verification module, and the tripping circuit breaker is connected to a corresponding one of the branch devices.

[0015] Optionally, the branch device is provided with a control output port and a signal acquisition port, and both the control output port and the signal acquisition port are connected to the trip circuit breaker;

[0016] The control output port is used to output a control signal for controlling the tripping of the trip circuit breaker, and the signal acquisition port is used to acquire a switch position signal of the trip circuit breaker.

[0017] Optionally, the intelligent test terminal is pluggably connected to the circuit breaker.

[0018] Optionally, the intelligent test terminal is connected to the circuit breaker via a pluggable terminal.

[0019] Optionally, the circuit breaker trip test device further includes a control hub, a communication hub and a power line bar;

[0020] Two ends of the control hub are connected to the control module and the circuit breaker respectively;

[0021] Two ends of the communication hub are connected to the verification module and the circuit breaker respectively;

[0022] One end of the power cord is connected to the power supply, and the other end is connected to the intelligent test terminal and the circuit breaker respectively.

[0023] In a second aspect, the present invention further provides a circuit breaker tripping test method, based on the circuit breaker tripping test device provided in the first aspect of the present invention, comprising:

[0024] The verification module sends a verification signal to the circuit breaker to be tested;

[0025] The circuit breaker to be tested returns a confirmation signal to the verification module in response to the verification signal;

[0026] After receiving the confirmation signal, the verification module sends the confirmation signal to the control module;

[0027] After receiving the confirmation signal, the control module sends a disconnection signal to the circuit breaker to be tested;

[0028] The circuit breaker to be tested responds to the switch-off signal and sends a feedback signal to the control module;

[0029] The control module confirms whether the circuit breaker to be tested is normally closed based on the feedback signal.

[0030] Optionally, the verification module sends a verification signal to the circuit breaker to be tested, including:

[0031] Setting the baud rate of the communication port of the verification module;

[0032] Release the power-saving state of the intelligent test terminal;

[0033] Select the circuit breaker to be tested;

[0034] Set the preset delay for sending the verification signal;

[0035] Execute the issuing operation and send a verification signal to the circuit breaker to be tested after the preset delay.

[0036] The circuit breaker trip test device provided by the present invention includes an intelligent test terminal, multiple circuit breakers, and a power supply. The intelligent test terminal includes a control module and a verification module. The control module is connected to the verification module, and the circuit breaker is connected to the control module and the verification module respectively. The power supply is connected to the intelligent test terminal and the circuit breaker respectively to supply power to the intelligent test terminal and the circuit breaker. The verification module is used to send a verification signal to the circuit breaker under test, receive a confirmation signal returned by the circuit breaker under test, and then send the confirmation signal to the control module. After receiving the confirmation signal, the control module sends a trip signal to the circuit breaker under test. The circuit breaker under test responds to the trip signal and sends a feedback signal to the control module. The control module confirms whether the circuit breaker under test is tripped normally based on the feedback signal. Before sending the trip signal to the circuit breaker under test, the verification signal is sent to the circuit breaker under test through the verification module to verify the address of the circuit breaker under test, thereby avoiding sending a trip signal to the wrong circuit breaker, which may cause confusing and inaccurate test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The present invention will be described in further detail below with reference to the accompanying drawings and examples.

[0038] Figure 1 A schematic structural diagram of a circuit breaker tripping test device provided by an embodiment of the present invention;

[0039] Figure 2 A schematic structural diagram of another circuit breaker tripping test device provided by an embodiment of the present invention;

[0040] Figure 3 The present invention provides a flow chart of a circuit breaker tripping test method. DETAILED DESCRIPTION

[0041] To make the technical problems solved, the technical solutions adopted, and the technical effects achieved by the present invention more clearly understood, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It is apparent that the described embodiments are only some of the embodiments of the present invention, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0042] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0043] In the present invention, unless otherwise expressly specified and limited, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, the first feature being "above", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature. In addition, the terms "first" and "second" are only used to distinguish in description and have no special meaning.

[0044] Figure 1 A schematic structural diagram of a circuit breaker tripping test device provided by an embodiment of the present invention is shown in FIG. Figure 1 As shown, the circuit breaker trip test device includes:

[0045] The intelligent test terminal 110 includes a control module 111 and a verification module 112 , and the control module 111 is connected to the verification module 112 .

[0046] Multiple circuit breakers 120 are connected to the control module 111 and the verification module 112. For example, the control module 111 leads to four groups of control lines connected to the four circuit breakers 120, and the verification module 112 leads to a bus and four groups of signal lines, which are connected to the four circuit breakers 120 respectively.

[0047] The power supply 130 is connected to the smart test terminal 110 and the circuit breaker 120 respectively to supply power to the smart test terminal 110 and the circuit breaker 120 .

[0048] For example, during testing, after all devices are connected, the verification module 112 sends a verification signal to the circuit breaker to be tested to verify the address of the circuit breaker to be tested, and receives a confirmation signal returned by the circuit breaker to be tested, and then sends the confirmation signal to the control module 111, wherein the circuit breaker to be tested is one of multiple circuit breakers. After receiving the confirmation signal, the control module 111 sends a power-off signal to the circuit breaker to be tested. The circuit breaker to be tested responds to the power-off signal and sends a feedback signal to the control module 111. The control module 111 confirms whether the circuit breaker to be tested is normally powered off based on the feedback signal. Before sending the power-off signal to the circuit breaker to be tested, the embodiment of the present invention sends a verification signal to the circuit breaker to be tested through the verification module to verify the address of the circuit breaker to be tested, so as to avoid sending a power-off signal to the wrong circuit breaker, which may lead to confusing and inaccurate test results.

[0049] The circuit breaker trip test device provided in an embodiment of the present invention includes an intelligent test terminal, multiple circuit breakers, and a power supply. The intelligent test terminal includes a control module and a verification module. The control module is connected to the verification module, and the circuit breaker is connected to the control module and the verification module respectively. The power supply is connected to the intelligent test terminal and the circuit breaker respectively to supply power to the intelligent test terminal and the circuit breaker. The verification module is used to send a verification signal to the circuit breaker under test, receive a confirmation signal returned by the circuit breaker under test, and then send the confirmation signal to the control module. After receiving the confirmation signal, the control module sends a trip signal to the circuit breaker under test. The circuit breaker under test responds to the trip signal and sends a feedback signal to the control module. The control module confirms whether the circuit breaker under test is tripped normally based on the feedback signal. Before sending the trip signal to the circuit breaker under test, the verification module sends a verification signal to the circuit breaker under test to verify the address of the circuit breaker under test, thereby avoiding sending a trip signal to the wrong circuit breaker, which may lead to confusing and inaccurate test results.

[0050] In some embodiments of the present invention, the verification module is an RS485 communication module. Among various communication modes, the RS485 bus is a more common one, which is widely used because of its simple interface and convenient networking. The RS485 wireless communication module adopts a fully digital wireless encrypted transmission method, and forms a wireless measurement and control network with equipment such as PLC, DCS, configuration software, human-machine interface, touch screen, intelligent instrument and sensor through the RS485 / 232 interface. It is compatible with standard MODBUS protocol, PPI protocol, N:N protocol, Host-Link protocol and free protocol, and provides a solution for long-distance wireless communication in the field of wireless measurement and control. It can realize point-to-point communication, and is also suitable for point-to-multipoint, dispersed and inconvenient trenching and wiring applications.

[0051] In some embodiments of the present invention, the circuit breaker is an intelligent circuit breaker or a trip circuit breaker.

[0052] For example, Figure 1 The circuit breaker shown is an intelligent circuit breaker. It utilizes a five-link free trip mechanism and is designed with energy storage. During operation, the mechanism is always in the pre-charged position, allowing it to instantly close upon receiving a closing command. The pre-charged energy is released by a button or closing electromagnet. The electric drive mechanism is self-contained, and the energy storage shaft is flexibly connected to the main shaft via a concave-convex wedge, facilitating assembly and disassembly. The intelligent circuit breaker can communicate directly with the intelligent test terminal.

[0053] Figure 2 A schematic structural diagram of another circuit breaker tripping test device provided by an embodiment of the present invention is shown in FIG. Figure 2 As shown, in this embodiment, the circuit breaker is a tripping circuit breaker, and the circuit breaker tripping test device further includes a plurality of branch devices 140, each of which is connected to a control module 111 and a verification module 112, respectively. The tripping circuit breaker 120 is connected to a corresponding branch device 140. Specifically, the intelligent test terminal 110 includes a control module 111 and a verification module 112, and the control module 111 is connected to the verification module 112. The control module 111 leads to four groups of control lines, each of which is connected to four branch devices 140. The branch device 140 leads to a group of control lines, each of which is connected to a corresponding tripping circuit breaker 120. The verification module 112 leads to a group of bus lines, which are then divided into four groups of signal lines, each of which is connected to four branch devices 140. The branch device 140 leads to a group of signal lines, each of which is connected to a corresponding tripping circuit breaker 120. The power supply 130 is connected to the intelligent test terminal 110 and the branch device 140, respectively, to provide power to the intelligent test terminal 110 and the branch device 140. The branch device 140 extends a set of power lines to connect to a corresponding trip circuit breaker 120, to provide power to the trip circuit breaker 120. The control line is used to transmit the tripping signal, and the signal line is used to transmit the verification signal and the confirmation signal.

[0054] In some embodiments of the present invention, the branch device 140 is provided with a control output port and a signal acquisition port. The control output port leads to a control line, and the signal acquisition port leads to a signal line, both of which are connected to the trip circuit breaker 120. The control output port is used to output a control signal for controlling the trip circuit breaker 120 to trip, and the signal acquisition port is used to collect the switch position signal of the trip circuit breaker 120.

[0055] For example, during testing, after all devices are connected, verification module 112 sends a verification signal to branch device 140 corresponding to the circuit breaker under test. Branch device 140 forwards the verification signal to the circuit breaker under test to verify the address of the circuit breaker under test, receives a confirmation signal from the circuit breaker under test, transmits it back to verification module 112, and then sends the confirmation signal to control module 111. The circuit breaker under test is one of multiple circuit breakers. After receiving the confirmation signal, control module 111 sends a trip signal to branch device 140 corresponding to the circuit breaker under test. Branch device 140 controls the operation of the circuit breaker under test in response to the trip signal. Branch device 140 reads the switch position information of the circuit breaker under test and sends the switch position information as a feedback signal to verification module 112. Verification module 112 then sends it to the control module. Based on the feedback signal, control module 111 confirms whether the circuit breaker under test has tripped normally. In the embodiment of the present invention, before sending a trip signal to the circuit breaker to be tested, a verification module sends a verification signal to the circuit breaker to be tested to verify the address of the circuit breaker to be tested, thereby avoiding sending a trip signal to an incorrect circuit breaker, which would lead to confusing and inaccurate test results.

[0056] In some embodiments of the present invention, the intelligent test terminal 110 is pluggable with the circuit breaker 120. The intelligent test terminal 110 and the branch device 140, and the branch device 140 and the trip circuit breaker 120, are pluggable. After testing a batch of circuit breakers, the tested circuit breakers can be unplugged and new circuit breakers can be plugged in, thereby improving testing efficiency.

[0057] In some embodiments of the present invention, the intelligent test terminal is connected to the circuit breaker through a pluggable terminal, and the branch device is connected to the circuit breaker through a pluggable terminal, and the pluggable terminal enables quick plugging and unplugging.

[0058] In some embodiments of the present invention, Figure 1 、 2 As shown, the circuit breaker trip test device further includes a control hub 150 , a communication hub 160 and a power bar 170 .

[0059] like Figure 1 As shown, the two ends of the control hub 150 are connected to the control module 111 and the circuit breaker 120 respectively; Figure 2 As shown, two ends of the control hub 150 are connected to the control module 111 and the branch device 140 respectively.

[0060] like Figure 1 As shown, the two ends of the communication hub 160 are connected to the verification module 112 and the circuit breaker 120 respectively; Figure 2 As shown, two ends of the communication hub 160 are connected to the verification module 112 and the branch device 140 respectively.

[0061] like Figure 1 As shown, one end of the power line 170 is connected to the power supply 130, and the other end is connected to the smart test terminal 110 and the circuit breaker 120 respectively; Figure 2 As shown, one end of the power line 170 is connected to the power source 130 , and the other end is connected to the smart test terminal 110 and the branch device 140 respectively.

[0062] The control hub 150 , the communication hub 160 and the power line row 170 can facilitate the testers to connect and route the wires, while improving the neatness of the wiring on site.

[0063] An embodiment of the present invention further provides a circuit breaker tripping test method, based on the circuit breaker tripping test device provided by any of the aforementioned embodiments of the present invention, Figure 3 A flow chart of a circuit breaker tripping test method provided by an embodiment of the present invention is shown in FIG. Figure 3 As shown, the method includes:

[0064] S101: A verification module sends a verification signal to a circuit breaker to be tested.

[0065] For example, Figure 1 As shown, during the test, after all devices are connected, the verification module sends a verification signal to the circuit breaker to be tested to verify the address of the circuit breaker to be tested. Figure 2 As shown, during testing, after all devices are connected, the verification module sends a verification signal to the branch device corresponding to the circuit breaker under test, and the branch device 140 forwards the verification signal to the circuit breaker under test to verify the address of the circuit breaker under test.

[0066] In some embodiments of the present invention, the process of the verification module sending a verification signal to the circuit breaker to be tested includes:

[0067] After completing the wiring, first set the serial port connection between the intelligent test terminal and the host computer, set the communication port baud rate of the verification module to 9600bps, release the power-saving state of the intelligent test terminal, select the circuit breaker to be tested, set the preset delay for sending the verification signal (for example, a delay of 1 minute), and then execute the sending operation. After the preset delay, send the verification signal to the circuit breaker to be tested.

[0068] S102: The circuit breaker to be tested returns a confirmation signal to the verification module in response to the verification signal.

[0069] like Figure 1 As shown, the circuit breaker to be tested returns a confirmation signal to the verification module in response to the verification signal. Figure 2 As shown, the circuit breaker to be tested returns a confirmation signal to the branch device in response to the verification signal, and the branch device forwards the confirmation signal to the verification module.

[0070] S103: After receiving the confirmation signal, the verification module sends the confirmation signal to the control module.

[0071] After receiving the confirmation signal, the verification module sends the confirmation signal to the control module.

[0072] S104 . After receiving the confirmation signal, the control module sends a disconnection signal to the circuit breaker to be tested.

[0073] like Figure 1 As shown in FIG, after receiving the confirmation signal, the control module sends a disconnection signal to the circuit breaker to be tested. Figure 2 As shown, after receiving the confirmation signal, the control module sends a switch-off signal to the branch device corresponding to the circuit breaker to be tested.

[0074] S105 : The circuit breaker to be tested responds to the disconnection signal and sends a feedback signal to the control module.

[0075] like Figure 1 As shown, the circuit breaker under test responds to the power-off signal and sends a feedback signal to the control module. Figure 2 As shown, the branch device controls the operation of the circuit breaker to be tested in response to the switch-off signal. The branch device reads the switch position information of the circuit breaker to be tested, sends the switch position information as a feedback signal to the verification module, and the verification module sends it to the control module.

[0076] S106 : The control module confirms whether the circuit breaker to be tested is normally closed based on the feedback signal.

[0077] The control module confirms whether the circuit breaker to be tested is normally closed based on the switch position information.

[0078] In the description of this document, it should be understood that the terms "up", "down", "left", "right", and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0079] In this specification, reference to terms such as "one embodiment" or "example" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example.

[0080] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0081] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are intended solely to illustrate the principles of the present invention and are not to be construed in any way as limiting the scope of protection of the present invention. Based on the explanations herein, those skilled in the art will readily conceive of other specific embodiments of the present invention without inventive effort, and such embodiments will fall within the scope of protection of the present invention.

Claims

1. A circuit breaker trip test device, characterized in that: include: An intelligent test terminal, comprising a control module and a verification module, wherein the control module is connected to the verification module; a plurality of circuit breakers, each of which is connected to the control module and the verification module; a power supply, the power supply being connected to the intelligent test terminal and the circuit breaker respectively to supply power to the intelligent test terminal and the circuit breaker; The verification module is used to send a verification signal to the circuit breaker to be tested, receive a confirmation signal returned by the circuit breaker to be tested, and then send the confirmation signal to the control module; After receiving the confirmation signal, the control module sends a disconnection signal to the circuit breaker to be tested; The circuit breaker to be tested responds to the switching-off signal and sends a feedback signal to the control module. The control module confirms whether the circuit breaker to be tested is normally switched off based on the feedback signal.

2. The circuit breaker tripping test device according to claim 1, characterized in that: The verification module is an RS485 communication module.

3. The circuit breaker tripping test device according to claim 1, characterized in that: The circuit breaker is an intelligent circuit breaker or a trip circuit breaker.

4. The circuit breaker tripping test device according to claim 3, characterized in that: When the circuit breaker is a tripping circuit breaker, the circuit breaker tripping test device further includes a plurality of branch devices, each of which is connected to the control module and the verification module, and the tripping circuit breaker is connected to a corresponding one of the branch devices.

5. The circuit breaker tripping test device according to claim 4, characterized in that: The branch device is provided with a control output port and a signal acquisition port, and both the control output port and the signal acquisition port are connected to the trip circuit breaker; The control output port is used to output a control signal for controlling the tripping of the trip circuit breaker, and the signal acquisition port is used to acquire a switch position signal of the trip circuit breaker.

6. The circuit breaker tripping test device according to any one of claims 1 to 5, characterized in that: The intelligent test terminal is pluggably connected to the circuit breaker.

7. The circuit breaker tripping test device according to claim 6, characterized in that: The intelligent test terminal is connected to the circuit breaker via a pluggable terminal.

8. The circuit breaker tripping test device according to any one of claims 1 to 5, characterized in that: The circuit breaker trip test device also includes a control hub, a communication hub and a power line bar; Two ends of the control hub are connected to the control module and the circuit breaker respectively; Two ends of the communication hub are connected to the verification module and the circuit breaker respectively; One end of the power cord is connected to the power supply, and the other end is connected to the intelligent test terminal and the circuit breaker respectively.

9. A circuit breaker tripping test method, characterized in that: The circuit breaker tripping test device according to any one of claims 1 to 8 comprises: The verification module sends a verification signal to the circuit breaker to be tested; The circuit breaker to be tested returns a confirmation signal to the verification module in response to the verification signal; After receiving the confirmation signal, the verification module sends the confirmation signal to the control module; After receiving the confirmation signal, the control module sends a disconnection signal to the circuit breaker to be tested; The circuit breaker to be tested responds to the switch-off signal and sends a feedback signal to the control module; The control module confirms whether the circuit breaker to be tested is normally closed based on the feedback signal.

10. The circuit breaker tripping test method according to claim 9, characterized in that: The verification module sends a verification signal to the circuit breaker under test, including: Setting the baud rate of the communication port of the verification module; Release the power-saving state of the intelligent test terminal; Select the circuit breaker to be tested; Set the preset delay for sending the verification signal; Execute the issuing operation and send a verification signal to the circuit breaker to be tested after the preset delay.

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