Detection device and method for circuit breaker controller

Abstract

The invention relates to a detection device and method for a circuit breaker controller, relates to the technical field of coal mine electromechanics, and can accurately judge the fault type of a switching-on mechanism of a mobile substation. The detection device comprises a power supply transformer, a no-voltage coil power supply loop, a shunt excitation coil power supply loop, a closing motor power supply loop and a control loop, and the primary side of the power supply transformer is connected with a power supply voltage and a circuit breaker controller. The secondary side of the power transformer is respectively connected with the no-voltage coil power supply loop, the shunt excitation coil power supply loop, the closing motor power supply loop and the control loop; and the detection device is used for determining whether the circuit breaker controller has a fault or not according to the operation states of the voltage loss coil power supply loop, the shunt excitation coil power supply loop, the closing motor power supply loop and the control loop when the circuit breaker controller is in a power-on state.

Description

Technical Field

[0001] The present disclosure relates to the technical field of coal mine electromechanics, and specifically, to a detection device and method for a circuit breaker controller. Background Art

[0002] When a fault occurs in the closing mechanism of a mobile substation, due to the mutual restriction between mechanics and electricity, it is impossible to determine whether the fault type of the high-voltage closing mechanism is a mechanical fault or an electrical fault, and there are drawbacks of being unable to accurately judge the fault. Summary of the Invention

[0003] The purpose of the present disclosure is to provide a detection device and method for a circuit breaker controller, which can accurately judge the fault type of the closing mechanism of a mobile substation.

[0004] To achieve the above purpose, in the first aspect, the present disclosure provides a detection device for a circuit breaker controller. The detection device includes: a power transformer, a power supply circuit for a dropout coil, a power supply circuit for a shunt trip coil, a power supply circuit for a closing motor, and a control circuit. The primary side of the power transformer is respectively connected to a power supply voltage and a circuit breaker controller, and the secondary side of the power transformer is respectively connected to the power supply circuit for the dropout coil, the power supply circuit for the shunt trip coil, the power supply circuit for the closing motor, and the control circuit; The detection device is used to determine whether the circuit breaker controller is faulty according to the operating states of the power supply circuit for the dropout coil, the power supply circuit for the shunt trip coil, the power supply circuit for the closing motor, and the control circuit when the circuit breaker controller is powered on.

[0005] Optionally, the power supply circuit for the dropout coil includes a first rectifier bridge, a first power diode, a dropout coil, and a first control button. The first end of the first rectifier bridge is connected to the secondary side of the power transformer. The second end and the fourth end of the first rectifier bridge are connected in series with the dropout coil. The first power diode is connected in parallel with the dropout coil. The third end of the first rectifier bridge is connected in series with the first control button and then connected to the secondary side of the power transformer; The first rectifier bridge is used to convert the power supply voltage into direct current to supply power to the dropout coil.

[0006] Optionally, the power supply circuit for the shunt trip coil includes a second control button, a first resistor, a first unidirectional thyristor module, and a shunt trip coil. The first end of the second control button is connected to the secondary side of the power transformer. The second end of the second control button is sequentially connected in series with the first resistor, the first unidirectional thyristor module, and the shunt trip coil, and then connected to the secondary side of the power transformer; The first resistor is used to trigger the first unidirectional thyristor module to conduct, so as to supply power to the shunt trip coil.

[0007] Optionally, the first one-way thyristor module includes a first one-way thyristor, a first protection circuit, a starting circuit, a second power diode, a second resistor, and a first capacitor. The anode and the control electrode of the first one-way thyristor are connected in parallel with the first protection circuit and then respectively connected to the first end of the second power diode and the first end of the first capacitor. The anode of the first one-way thyristor is connected to the starting circuit, and the control electrode of the first one-way thyristor is connected to the first resistor; The second end of the second power diode is connected to the second end of the second resistor, and the first end of the second resistor is connected to the power transformer; The second end of the first capacitor is connected to the power transformer.

[0008] Optionally, the starting circuit includes a first relay, a third resistor, a second capacitor, a third power diode, and a fourth power diode. The first end of the first relay is connected to the second end of the first capacitor, the second end of the first relay is connected to the second end of the shunt coil, the second capacitor is connected in parallel with the anode and the cathode of the first one-way thyristor, the third resistor and the third power diode are connected in series and then connected in parallel with the shunt coil, and the fourth power diode is connected in parallel with the shunt coil.

[0009] Optionally, the closing motor power supply circuit includes a second rectifier bridge, a third control button, a fourth resistor, a second one-way thyristor module, a first relay module, and a closing motor. The first end of the second rectifier bridge is connected to the secondary side of the power transformer through the first relay module. After the second end and the fourth end of the second rectifier bridge are connected to the second one-way thyristor module, they are connected in parallel with the closing motor and connected in series with the fourth resistor and the third control button. The third end of the second rectifier bridge is connected to the second end of the first control button in the under-voltage coil power supply circuit; The fourth resistor is used to jointly trigger the conduction of the second one-way thyristor with the first relay module, so as to supply power to the closing motor.

[0010] Optionally, the second one-way thyristor module includes a second one-way thyristor, a fifth power diode, and two first protection circuits and a second protection circuit. The anode and the cathode of the second one-way thyristor are connected in parallel with one of the first protection circuits and then connected to the closing motor. The cathode and the control electrode of the second one-way thyristor are connected in parallel with one of the first protection circuits. The anode and the control electrode of the second one-way thyristor are connected in series with the second protection circuit. The fifth power diode is connected in parallel with the closing motor.

[0011] Optionally, the control loop includes a fourth control button, a loop power transformer, a bridge rectifier, a voltage regulation module, and a second relay module. The primary side of the loop power transformer is respectively connected to the power transformer and the first end of the first rectifier bridge in the under-voltage coil power supply loop. The secondary side of the loop power transformer is connected in series with the bridge rectifier, the voltage regulation module, and the fourth control button and then grounded. The fourth control button is used to simulate the position switch to trigger the operation of the second relay module. The loop power transformer is used to stabilize the loop voltage to a preset voltage to supply power to the second relay module.

[0012] Optionally, the voltage regulation module includes a voltage regulator, a third capacitor, a fourth capacitor, a fifth capacitor, a sixth power diode, and an inductor. The first end of the voltage regulator is respectively connected to the second end of the inductor, the first end of the fifth capacitor, and the second relay module. The third end of the voltage regulator is respectively connected to the first end of the inductor and the first end of the sixth power diode. The fifth end of the voltage regulator is connected to the bridge rectifier. The second end and the fourth end of the voltage regulator are connected and then respectively connected to the bridge rectifier, the second end of the sixth power diode, and the second end of the fifth capacitor and then grounded. The third capacitor is connected in parallel with the bridge rectifier, and the fourth capacitor is connected in parallel with the third capacitor.

[0013] Optionally, the second relay module includes a second relay, a third relay, and a fourth relay. The first end of the second relay is respectively connected to the voltage regulation module and the first end of the fourth relay. The second end of the second relay is grounded. The first end of the third relay is respectively connected to the voltage regulation module and the first end of the fourth relay. The second end of the third relay is grounded. The second end of the fourth relay is connected to the first end of the fourth control button, and the second end of the fourth control button is grounded.

[0014] In a second aspect, the present disclosure provides a method for detecting a circuit breaker controller. Connect the circuit breaker controller to be tested to the detection device of the circuit breaker controller described in the first aspect. The method includes: In the powered-on state of the circuit breaker controller, determine whether the circuit breaker controller is faulty according to the operating states of the under-voltage coil power supply loop, the shunt coil power supply loop, the closing motor power supply loop, and the control loop.

[0015] Optionally, determining whether the breaker controller is faulty according to the operating states of the under-voltage coil power supply circuit, the shunt trip coil power supply circuit, the closing motor power supply circuit, and the control circuit includes: When any one of the under-voltage coil power supply circuit, the shunt trip coil power supply circuit, the closing motor power supply circuit, and the control circuit fails to operate normally, it is determined that the breaker controller is faulty; When the under-voltage coil power supply circuit, the shunt trip coil power supply circuit, the closing motor power supply circuit, and the control circuit are all operating normally, it is determined that the breaker controller is not faulty.

[0016] Through the above technical solution, when the breaker controller is powered on, it is determined whether the breaker controller is faulty according to the operating states of the under-voltage coil power supply circuit, the shunt trip coil power supply circuit, the closing motor power supply circuit, and the control circuit. When a fault occurs in the closing mechanism of the mobile substation, it can accurately determine whether the fault type of the high-voltage closing mechanism is an electrical fault, so as to accurately judge the fault type of the closing mechanism of the mobile substation.

[0017] Other features and advantages of the present disclosure will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings are used to provide a further understanding of the present disclosure, and constitute a part of the specification. Together with the following specific implementation, they are used to explain the present disclosure, but do not constitute a limitation to the present disclosure. In the drawings: Figure 1 is a circuit diagram of a detection device for a breaker controller shown according to an exemplary embodiment of the present disclosure.

[0019] Figure 2 is a flowchart of a detection method for a breaker controller shown according to an exemplary embodiment of the present disclosure. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following describes the specific implementation of the present disclosure in detail with reference to the drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0021] It should be noted that all actions of obtaining signals, information, or data in the present disclosure are carried out on the premise of complying with the corresponding data protection regulations and policies of the country where it is located, and with the authorization given by the owner of the corresponding device.

[0022] As described in the background art, currently, the KBGZY series of mobile substations used in coal mines are widely applied to underground power supply, which are used to convert 10,000V three-phase alternating current into 3,300V, 1,140V, and 660V three-phase alternating current for supplying mining and excavation equipment and low-voltage distribution points. The high-voltage mechanical closing mechanism of the KBGZY series of mobile substations used in coal mines consists of components such as a vacuum circuit breaker, a mechanical closing mechanism, a 100V transformer, and a ZHK-1 circuit breaker controller.

[0023] The ZNK-1 type circuit breaker controller is an electrical control component installed in the closing mechanism on the high-voltage side of the mobile substation and is the electrical control core of the mobile substation. There is no dedicated device to detect it. As a result, when a fault occurs in the closing mechanism of the mobile substation, it is impossible to determine whether the high-voltage closing mechanism has a mechanical fault or an electrical fault, and there is a drawback of being unable to accurately judge the fault.

[0024] In view of this, the present disclosure provides a detection device and method for a circuit breaker controller, which can accurately judge the fault type of the closing mechanism of the mobile substation by detecting whether the circuit breaker controller is faulty.

[0025] Figure 1 It is a circuit diagram of a detection device for a circuit breaker controller shown according to an exemplary embodiment of the present disclosure. As Figure 1 shown, the detection device includes: a power transformer, a power supply circuit for the under-voltage coil, a power supply circuit for the shunt coil, a power supply circuit for the closing motor, and a control circuit. The primary side of the power transformer is respectively connected to the power supply voltage and the circuit breaker controller, and the secondary side of the power transformer is respectively connected to the power supply circuit for the under-voltage coil, the power supply circuit for the shunt coil, the power supply circuit for the closing motor, and the control circuit; The detection device is used to determine whether the circuit breaker controller is faulty according to the operating states of the power supply circuit for the under-voltage coil, the power supply circuit for the shunt coil, the power supply circuit for the closing motor, and the control circuit when the circuit breaker controller is powered on.

[0026] Exemplarily, as Figure 1As shown, the primary side of the power transformer is respectively connected to the power supply voltage and the breaker controller, and a power indicator light is connected in parallel to the primary side of the power transformer. The secondary side of the power transformer is connected to the under-voltage coil power supply circuit, the shunt trip coil power supply circuit, the closing motor power supply circuit, and the control circuit by DQ8 and DQ18 respectively. The 220V power supply flows into the primary side of the power transformer through the switch and supplies power to the breaker controller connected to the detection device, and the power indicator light is on. The secondary side of the power transformer outputs 100V alternating current, which supplies power to the under-voltage coil power supply circuit, the shunt trip coil power supply circuit, the closing motor power supply circuit, and the control circuit by DQ8 and DQ18. According to the operating states of the four circuits, it is determined whether the breaker controller is faulty.

[0027] The detection device for the breaker controller provided in the embodiment of the present disclosure can separately perform fault detection on the ZNK-1 type breaker controller, so as to achieve accurate fault detection when a malfunction occurs that the high-voltage closing mechanism of the KBSGZY series mobile substation in coal mines fails to close, and determine whether it is the ZNK-1 type breaker controller that fails or the breaker closing mechanism itself fails, achieving accurate judgment and avoiding blind maintenance without a clue, so as to achieve the purpose of quickly judging the fault.

[0028] To facilitate those skilled in the art to understand the detection device for the breaker controller provided in the present disclosure, the detection device will be described in detail below.

[0029] In a feasible embodiment, as Figure 1 shown, the under-voltage coil power supply circuit includes a first rectifier bridge, a first power diode, an under-voltage coil, and a first control button. The first end of the first rectifier bridge is connected to the secondary side of the power transformer. The second end and the fourth end of the first rectifier bridge are connected in series with the under-voltage coil. The first power diode is connected in parallel with the under-voltage coil. The third end of the first rectifier bridge is connected in series with the first control button and then connected to the secondary side of the power transformer; The first rectifier bridge is used to convert the power supply voltage into direct current to supply power to the under-voltage coil.

[0030] Exemplarily, as Figure 1As shown, the power supply circuit of the under-voltage coil includes the first rectifier bridge KBL608, the first power diode 1N5408, the under-voltage coil SY, and the first control button, that is, the under-voltage coil test button. The first end of KBL608 is connected to the DQ8 terminal on the secondary side of the power transformer. The second end and the fourth end of KBL608 are connected in series with SY. 1N5408 is connected in parallel with SY. The third end of KBL608 is connected to the DQ9 terminal of the under-voltage coil test button. The DQ10 terminal of the under-voltage coil test button is connected to the DQ8 terminal on the secondary side of the power transformer. A fuse resistor is also provided between the first end of KBL608 and the DQ8 terminal on the secondary side of the power transformer. The AC input terminal of KBL608 in the under-voltage coil power supply circuit is triggered by the under-voltage coil test button between DQ9 and DQ10. After the under-voltage coil test button is closed, KBL608 converts the 100V AC voltage output by the secondary side of the power transformer into DC power and directly supplies it to the under-voltage coil. If SY is attracted, it indicates that the under-voltage coil power supply circuit is operating normally. If SY is not attracted, it indicates that the under-voltage coil power supply circuit is not operating normally.

[0031] In a feasible embodiment, as Figure 1 shown, the power supply circuit of the shunt coil includes a second control button, a first resistor, a first single-phase thyristor module, and a shunt coil. The first end of the second control button is connected to the secondary side of the power transformer. After the second end of the second control button is connected in series with the first resistor, the first single-phase thyristor module, and the shunt coil in sequence, it is connected to the secondary side of the power transformer; The first resistor is used to trigger the first single-phase thyristor module to conduct, so as to supply power to the shunt coil.

[0032] Exemplarily, as Figure 1 shown, the power supply circuit of the shunt coil includes a second control button, that is, the shunt coil test button, a first resistor R1 (with a resistance value of 20KΩ), a first single-phase thyristor module, and a shunt coil FL. The shunt coil test button shares the DQ10 terminal with the under-voltage coil test button, and the DQ10 terminal is connected to the DQ18 terminal on the secondary side of the power transformer. After the DQ20 terminal of the shunt coil test button is connected in series with R1, the first single-phase thyristor module, and the shunt coil, it is connected to the DQ8 terminal on the secondary side of the power transformer. The 100V alternating current in the shunt coil power supply circuit is triggered by the shunt coil test button between DQ10 and DQ20. After the shunt coil test button is closed, R1 triggers the first single-phase thyristor module to conduct and supply power to FL. If FL is attracted, it indicates that the shunt coil power supply circuit is operating normally. If FL is not attracted, it indicates that the shunt coil power supply circuit is not operating normally.

[0033] In a feasible embodiment, as Figure 1As shown, the first unidirectional thyristor module includes a first unidirectional thyristor, a first protection circuit, a starting circuit, a second power diode, a second resistor, and a first capacitor. The anode and the control electrode of the first unidirectional thyristor are connected in parallel with the first protection circuit and then respectively connected to the first end of the second power diode and the first end of the first capacitor. The anode of the first unidirectional thyristor is connected to the starting circuit, and the control electrode of the first unidirectional thyristor is connected to the first resistor; The second end of the second power diode is connected to the second end of the second resistor, and the first end of the second resistor is connected to the power transformer; The second end of the first capacitor is connected to the power transformer.

[0034] Exemplarily, as Figure 1 shown, the first unidirectional thyristor module includes a first unidirectional thyristor S6025, a first protection circuit, a starting circuit, a second power diode 1N5408, a second resistor R2, and a first capacitor C1 (680uf / 250V). The anode A and the control electrode G of S6025 are connected in parallel with the first protection circuit and then respectively connected to the first end of 1N5408 and the first end of C1. The anode A of S6025 is connected to the starting circuit, and the controller G of S6025 is connected to R1; the second end of 1N5408 is connected to the second end of R2, and the first end of R2 is connected to the DQ8 end of the power transformer; the second end of C1 is connected to the DQ18 end of the power transformer. Among them, the first protection circuit is composed of a resistor and a capacitor connected in parallel.

[0035] In a feasible embodiment, as Figure 1 shown, the starting circuit includes a first relay, a third resistor, a second capacitor, a third power diode, and a fourth power diode. The first end of the first relay is connected to the second end of the first capacitor, the second end of the first relay is connected to the second end of the shunt coil, the second capacitor is connected in parallel with the anode and the cathode of the first unidirectional thyristor, the third resistor is connected in series with the third power diode and then connected in parallel with the shunt coil, and the fourth power diode is connected in parallel with the shunt coil.

[0036] Exemplarily, as Figure 1 shown, the starting circuit includes a first relay JZ3-1, a third resistor R3, a second capacitor C2, a third power diode 1N5408, and a fourth power diode 1N5408. The first end of JZ3-1 is connected to the second end of C1, the second end of JZ3-1 is connected to the second end of FL, C2 is connected in parallel with the anode A and the cathode K of S6025, R3 is connected in series with the third power diode 1N5408 and then connected in parallel with FL, and the fourth power diode 1N5408 is connected in parallel with FL.

[0037] In a feasible embodiment, as Figure 1 shown, the closing motor power supply circuit includes a second rectifier bridge, a third control button, a fourth resistor, a second unidirectional thyristor module, a first relay module, and a closing motor. The first end of the second rectifier bridge is connected to the secondary side of the power transformer through the first relay module. After the second end and the fourth end of the second rectifier bridge are connected to the second unidirectional thyristor module, they are connected in parallel with the closing motor and are connected in series with the fourth resistor and the third control button. The third end of the second rectifier bridge is connected to the second end of the first control button in the under-voltage coil power supply circuit; The fourth resistor is used to trigger the conduction of the second unidirectional thyristor together with the first relay module, so as to supply power to the closing motor.

[0038] Exemplarily, as Figure 1 shown, the closing motor power supply circuit includes a second rectifier bridge KBL608, a third control button, i.e., the closing motor test button, a fourth resistor R4 (20KΩ / 2W), a second unidirectional thyristor module, a first relay module, and a closing motor M. The first end of KBL608 is connected to the DQ8 end of the secondary side of the power transformer through the first relay module. After the second end and the fourth end of KBL608 are connected to the second unidirectional thyristor module, they are connected in parallel with M and are connected in series with R4 and the closing motor test button and then connected to the DQ18 end of the secondary side of the power transformer. The third end of KBL608 is connected to the DQ9 end of the under-voltage coil test button in the under-voltage coil circuit. The closing motor test button and the under-voltage coil test button share the DQ10 end. The 100V alternating current in the closing motor power supply circuit is triggered by the closing motor test button at the DQ19 and DQ10 ends. After the closing motor test button is closed, R4 and the first relay module jointly trigger the conduction of the second unidirectional thyristor module. If M rotates, it indicates that the closing motor power supply circuit is operating normally. If M does not rotate, it indicates that the closing motor power supply circuit is not operating normally. Among them, the first relay module is composed of two relays connected in series, and one of the relays is in the closed state. As Figure 1 shown, the first relay module is composed of JZ3-2 and JZ2-1 connected in series, and JZ2-1 is in the closed state.

[0039] In a feasible embodiment, as Figure 1 shown, the second unidirectional thyristor module includes a second unidirectional thyristor, a fifth power diode, and two first protection circuits and a second protection circuit. The anode and cathode of the second unidirectional thyristor are connected in parallel with one of the first protection circuits and then connected to the closing motor. The cathode and the control electrode of the second unidirectional thyristor are connected in parallel with one of the first protection circuits. The anode and the control electrode of the second unidirectional thyristor are connected in series with the second protection circuit. The fifth power diode is connected in parallel with the closing motor.

[0040] Exemplarily, as Figure 1 shown, the second unidirectional thyristor module includes a second thyristor S6025, a fifth power diode 1N5408, and two first protection circuits and a second protection circuit. The anode A and the cathode K of S6025 are connected to the closing motor M in parallel after being connected in parallel with a first protection circuit. The cathode K and the control electrode G of S6025 are connected in parallel with a protection circuit. The anode A and the control electrode G of S6025 are connected in series with the second protection circuit. The second protection circuit is composed of a resistor and a capacitor connected in series. 1N5408 is connected in parallel with the closing motor M.

[0041] In a feasible embodiment, as Figure 1 shown, the control loop includes a fourth control button, a loop power transformer, a bridge rectifier, a voltage regulation module, and a second relay module. The primary side of the loop power transformer is respectively connected to the power transformer and the first end of the first rectifier bridge in the under-voltage coil power supply loop. The secondary side of the loop power transformer is sequentially connected in series with the bridge rectifier, the voltage regulation module, and the fourth control button and then grounded; The fourth control button is used to simulate a position switch to trigger the second relay module to work; The loop power transformer is used to stabilize the loop voltage to a preset voltage to supply power to the second relay module.

[0042] Exemplarily, as Figure 1 shown, the control loop includes a fourth control button, i.e., a position test button, a loop power transformer, a bridge rectifier, a voltage regulation module, and a second relay module. The primary side of the loop power transformer is connected to the DQ18 terminal of the secondary side of the power transformer, and is connected to the first end of KBL608 in the under-voltage coil power supply loop and then connected to the DQ8 terminal of the secondary side of the power transformer. The secondary side of the loop power transformer is sequentially connected in series with the voltage regulation module, the second relay module, and the position test button and then grounded. The bridge rectifier is composed of four 1N4007s. The 100V alternating current in the control loop is triggered by the position test button. After the position test button is closed, the 100V power supply voltage flows to the primary side of the loop power transformer. The secondary side of the loop power transformer outputs a 20V alternating voltage. The bridge rectifier filters the 20V alternating voltage and stabilizes it to 12V and supplies it to the second relay module. If the second relay module conducts, it indicates that the control loop is operating normally. If the second relay module does not conduct, it indicates that the control loop is not operating normally.

[0043] In a feasible embodiment, as Figure 1As shown, the voltage regulation module includes a voltage regulator, a third capacitor, a fourth capacitor, a fifth capacitor, a sixth power diode, and an inductor. The first end of the voltage regulator is respectively connected to the second end of the inductor, the first end of the fifth capacitor, and the second relay module. The third end of the voltage regulator is respectively connected to the first end of the inductor and the first end of the sixth power diode. The fifth end of the voltage regulator is connected to the bridge rectifier. The second end and the fourth end of the voltage regulator are connected and then respectively connected to the bridge rectifier, the second end of the sixth power diode, and the second end of the fifth capacitor and then grounded. The third capacitor is connected in parallel with the bridge rectifier, and the fourth capacitor is connected in parallel with the third capacitor.

[0044] Exemplarily, as Figure 1 shown, the voltage regulation module includes a voltage regulator LM2596 - 12, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, a sixth power diode 1N5408, and an inductor L. The first end of LM2596 - 12 is respectively connected to the second end of the inductor L, the first end of C5, and the second relay module. The third end of LM2596 - 12 is respectively connected to the first end of the inductor L and the first end of 1N5408. The second end and the fourth end of LM2596 - 12 are connected and then respectively connected to the bridge rectifier, the second end of 1N5408, and the second end of C5 and then grounded. C3 is connected in parallel with the bridge rectifier, and C4 is connected in parallel with C3.

[0045] In a feasible implementation manner, as Figure 1 shown, the second relay module includes a second relay, a third relay, and a fourth relay. The first end of the second relay is respectively connected to the voltage regulation module and the first end of the fourth relay. The second end of the second relay is grounded. The first end of the third relay is respectively connected to the voltage regulation module and the first end of the fourth relay. The second end of the third relay is grounded. The second end of the fourth relay is connected to the first end of the fourth control button, and the second end of the fourth control button is grounded.

[0046] Exemplarily, as Figure 1 shown, the second relay module includes a second relay ZJ3, a third relay ZJ2, and a fourth relay ZJ1. The first end of ZJ3 is respectively connected to the voltage regulation module and the first end of ZJ1. The second end of ZJ3 is grounded. The first end of ZJ2 is respectively connected to the voltage regulation module and the first end of ZJ1. The second end of ZJ2 is grounded. The second end of ZJ1 is connected to the first end of the position test button, and the second end of the position test button is grounded.

[0047] In summary, the detection device of the circuit breaker controller can be composed of components such as a power transformer, a control button, a voltage loss coil, a shunt trip coil, a motor, an LED indicator light, and an aviation plug.

[0048] The specific composition process may include: A. Use a hole opener to punch holes in the casing of idle and old equipment to install components such as control buttons, LED indicator lights, aviation plugs, sockets, closing motors, shunt trip coils and undervoltage coils.

[0049] B. Install the panel with the control buttons on the front of the housing.

[0050] C. Wires are welded at both ends of the aviation plug socket. One end is plugged into the socket of the detection device, and the other end is used to plug into the socket of the controller to be detected. The buttons inside the detection device are wired.

[0051] D. Assembly of the testing device Figure 1 The circuit diagram shown in the figure shows the appearance of the entire test device after all assemblies are completed.

[0052] The detection device of the circuit breaker controller provided in the embodiment of the present disclosure can perform a comprehensive detection on the core control component ZNK-1 of the mining KBSGZY series mobile substation to detect the function of the ZNK-1 type circuit breaker controller when a fault occurs in the mining KBSGZY series mobile substation, so as to determine whether the ZNK-1 type circuit breaker controller fails, thereby determining whether the fault type of the high-voltage closing mechanism circuit breaker is an electrical fault, and accurately determining the fault point, thereby achieving the purpose of quickly determining the fault, avoiding clueless and blind maintenance, and improving maintenance efficiency.

[0053] Based on the same inventive concept, the present disclosure provides a detection method for a circuit breaker controller, wherein a circuit breaker controller to be tested is connected to the detection device of the circuit breaker controller, such as Figure 2 As shown, the method includes: When the circuit breaker controller is powered on, it is determined whether the circuit breaker controller is faulty according to the operating states of the undervoltage coil power supply circuit, the shunt coil power supply circuit, the closing motor power supply circuit and the control circuit.

[0054] The detection device of the circuit breaker controller provided in the embodiment of the present disclosure can perform fault detection on the ZNK-1 type circuit breaker controller separately, thereby realizing accurate fault detection when the high-voltage closing mechanism of the mining KBSGZY series mobile substation fails to close, and determining whether the fault is in the ZNK-1 type circuit breaker controller or in the circuit breaker closing mechanism itself, thereby realizing accurate judgment and avoiding blind maintenance without clue, thereby achieving the purpose of quickly judging the fault.

[0055] In a feasible implementation manner, determining whether the breaker controller is faulty according to the operating states of the under-voltage coil power supply circuit, the shunt trip coil power supply circuit, the closing motor power supply circuit, and the control circuit includes: When any one of the under-voltage coil power supply circuit, the shunt trip coil power supply circuit, the closing motor power supply circuit, and the control circuit fails to operate normally, it is determined that the breaker controller is faulty; When the under-voltage coil power supply circuit, the shunt trip coil power supply circuit, the closing motor power supply circuit, and the control circuit all operate normally, it is determined that the breaker controller is not faulty.

[0056] Exemplarily, when the mobile substation fails to close and it is impossible to determine whether the fault is in the breaker controller or the mechanical structure, remove the breaker controller in the mobile substation, connect the breaker controller to the detection device of the breaker controller, and respectively trigger the under-voltage coil test button, the shunt trip coil test button, the closing motor test button, and the position test button in the detection device. When any one of the under-voltage coil power supply circuit, the shunt trip coil power supply circuit, the closing motor power supply circuit, and the control circuit fails to operate normally, it is determined that the breaker controller is faulty, and it is determined that the fault type of the high-voltage closing mechanism of the mobile substation is an electrical fault; when the under-voltage coil power supply circuit, the shunt trip coil power supply circuit, the closing motor power supply circuit, and the control circuit all operate normally, it is determined that the breaker controller is not faulty, and it is determined that the fault type of the high-voltage closing mechanism of the mobile substation is a mechanical fault.

[0057] In addition, it should be noted that, among the various specific technical features described in the above specific implementation manner, they can be combined in any suitable manner without conflict. To avoid unnecessary repetition, the present disclosure does not separately describe various possible combination manners.

[0058] In addition, any combination can be made among various different implementation manners of the present disclosure, as long as it does not violate the idea of the present disclosure, it should also be regarded as the content disclosed by the present disclosure.

Claims

1. A detection device for a circuit breaker controller, characterized in that: The detection device comprises: a power transformer, a power supply circuit for a voltage loss coil, a power supply circuit for a shunt coil, a power supply circuit for a closing motor, and a control circuit, wherein the primary side of the power transformer is respectively connected to the power supply voltage and the circuit breaker controller, and the secondary side of the power transformer is respectively connected to the power supply circuit for a voltage loss coil, the power supply circuit for a shunt coil, the power supply circuit for a closing motor, and the control circuit; The detection device is used to determine whether the circuit breaker controller is faulty according to the operating states of the undervoltage coil power supply circuit, the shunt coil power supply circuit, the closing motor power supply circuit and the control circuit when the circuit breaker controller is powered on.

2. The detection device of the circuit breaker controller according to claim 1, characterized in that: The undervoltage coil power supply circuit includes a first rectifier bridge, a first power diode, an undervoltage coil and a first control button, wherein the first end of the first rectifier bridge is connected to the secondary side of the power transformer, the second end and the fourth end of the first rectifier bridge are connected in series with the undervoltage coil, the first power diode is connected in parallel with the undervoltage coil, and the third end of the first rectifier bridge is connected in series with the first control button and then connected to the secondary side of the power transformer; The first rectifier bridge is used to convert the power supply voltage into direct current to supply power to the undervoltage coil.

3. The detection device of the circuit breaker controller according to claim 1, characterized in that: The shunt coil power supply circuit includes a second control button, a first resistor, a first unidirectional thyristor module and a shunt coil, wherein a first end of the second control button is connected to the secondary side of the power transformer, and a second end of the second control button is sequentially connected in series with the first resistor, the first unidirectional thyristor module and the shunt coil, and then connected to the secondary side of the power transformer; The first resistor is used to trigger the first unidirectional thyristor module to conduct, thereby supplying power to the shunt coil.

4. The detection device of the circuit breaker controller according to claim 3, characterized in that: The first unidirectional thyristor module includes a first unidirectional thyristor, a first protection circuit, a startup circuit, a second power diode, a second resistor and a first capacitor, wherein an anode and a control electrode of the first unidirectional thyristor are connected in parallel with the first protection circuit and are respectively connected to a first end of the second power diode and a first end of the first capacitor, an anode of the first unidirectional thyristor is connected to the startup circuit, and a control electrode of the first unidirectional thyristor is connected to the first resistor; The second end of the second power diode is connected to the second end of the second resistor, and the first end of the second resistor is connected to the power transformer; The second end of the first capacitor is connected to the power transformer.

5. The detection device of the circuit breaker controller according to claim 4, characterized in that: The starting circuit includes a first relay, a third resistor, a second capacitor, a third power diode and a fourth power diode. The first end of the first relay is connected to the second end of the first capacitor, the second end of the first relay is connected to the second end of the shunt coil, the second capacitor is connected in parallel with the anode and cathode of the first unidirectional thyristor, the third resistor is connected in series with the third power diode and then connected in parallel with the shunt coil, and the fourth power diode is connected in parallel with the shunt coil.

6. The detection device of the circuit breaker controller according to claim 1, characterized in that: The closing motor power supply circuit includes a second rectifier bridge, a third control button, a fourth resistor, a second unidirectional thyristor module, a first relay module and a closing motor, wherein the first end of the second rectifier bridge is connected to the secondary side of the power transformer through the first relay module, the second end and the fourth end of the second rectifier bridge are connected to the second unidirectional thyristor module, and then connected in parallel with the closing motor and in series with the fourth resistor and the third control button, and the third end of the second rectifier bridge is connected to the second end of the first control button in the undervoltage coil power supply circuit; The fourth resistor is used to trigger the second unidirectional thyristor to conduct together with the first relay module, so as to supply power to the closing motor.

7. The detection device of the circuit breaker controller according to claim 6, characterized in that: The second unidirectional thyristor module includes a second unidirectional thyristor, a fifth power diode, and two first protection circuits and a second protection circuit. The anode and cathode of the second unidirectional thyristor are connected in parallel with one of the first protection circuits and then connected to the closing motor. The cathode and control electrode of the second unidirectional thyristor are connected in parallel with one of the first protection circuits. The anode and control electrode of the second unidirectional thyristor are connected in series with the second protection circuit, and the fifth power diode is connected in parallel with the closing motor.

8. The detection device of a circuit breaker controller according to claim 1, characterized in that: The control loop includes a fourth control button, a loop power transformer, a bridge rectifier, a voltage regulating module and a second relay module, the primary side of the loop power transformer is respectively connected to the power transformer and the first end of the first rectifier bridge in the voltage loss coil power supply loop, and the secondary side of the loop power transformer is connected in series with the bridge rectifier, the voltage regulating module and the fourth control button in sequence and then grounded; The fourth control button is used to simulate a position switch to trigger the second relay module to work; The loop power transformer is used to stabilize the loop voltage to a preset voltage to supply power to the second relay module.

9. The detection device of the circuit breaker controller according to claim 8, characterized in that: The voltage regulating module includes a voltage regulator, a third capacitor, a fourth capacitor, a fifth capacitor, a sixth power diode and an inductor, wherein the first end of the voltage regulator is respectively connected to the second end of the inductor, the first end of the fifth capacitor and the second relay module, the third end of the voltage regulator is respectively connected to the first end of the inductor and the first end of the sixth power diode, the fifth end of the voltage regulator is connected to the bridge rectifier, the second end of the sixth power diode and the second end of the fifth capacitor are respectively connected to the bridge rectifier, and the second end of the voltage regulator is grounded after being connected to the fourth end; The third capacitor is connected in parallel with the bridge rectifier, and the fourth capacitor is connected in parallel with the third capacitor.

10. The detection device of the circuit breaker controller according to claim 8, characterized in that: The second relay module includes a second relay, a third relay and a fourth relay, the first end of the second relay is respectively connected to the first end of the voltage regulating module and the fourth relay, the second end of the second relay is grounded, the first end of the third relay is respectively connected to the first end of the voltage regulating module and the fourth relay, the second end of the third relay is grounded, the second end of the fourth relay is connected to the first end of the fourth control button, and the second end of the fourth control button is grounded.

11. A detection method for a circuit breaker controller, characterized in that: Connecting the circuit breaker controller to be tested to the detection device of the circuit breaker controller according to any one of claims 1 to 10, the method comprising: When the circuit breaker controller is powered on, it is determined whether the circuit breaker controller is faulty according to the operating states of the undervoltage coil power supply circuit, the shunt coil power supply circuit, the closing motor power supply circuit and the control circuit.

12. The detection method of a circuit breaker controller according to claim 11, characterized in that: The determining whether the circuit breaker controller is faulty according to the operating states of the undervoltage coil power supply circuit, the shunt coil power supply circuit, the closing motor power supply circuit and the control circuit comprises: When any of the undervoltage coil power supply circuit, the shunt coil power supply circuit, the closing motor power supply circuit and the control circuit is not operating normally, determining that the circuit breaker controller is faulty; When the undervoltage coil power supply circuit, the shunt coil power supply circuit, the closing motor power supply circuit and the control circuit are all operating normally, it is determined that the circuit breaker controller has no fault.

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