Auxiliary control box for testing mechanical characteristics of switch
By designing an auxiliary control box for switch mechanical characteristic testing and adopting intelligent design and high-power programmable adjustable operating power supply, the problems of inconvenient wiring and difficult corresponding signal definition in the mechanical characteristic test of circuit breaker are solved, and an efficient and reliable testing process is achieved.
Patent Information
- Application Number
- CN202422493294.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-15
- Publication Date
- 2025-09-09
- Estimated Expiration
- 2034-10-15
AI Technical Summary
In the mechanical characteristics test of the circuit breaker, there are problems such as inconvenient wiring, difficulty in matching the definition of signal pins, the risk of short circuiting adjacent pins through wire clamps, and locking that makes the test unable to be carried out, resulting in low test efficiency and low reliability.
An auxiliary control box for switch mechanical characteristic testing is designed, which includes a control module, a relay module, a display module and a power supply module. It adopts intelligent design and a high-power programmable adjustable operating power supply. It realizes automatic signal switching through a relay switching array and has a built-in independent power supply. It supports automatic switching and transfer of test signals of various switch models.
It realizes fast wiring, automatic connection of corresponding signal lines, built-in energy storage power supply, and unlocking, which improves the efficiency and reliability of testing, reduces the possibility of human operation errors, and ensures the accuracy and safety of testing.
Smart Images
Figure CN223320539U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the technical field of power detection, and in particular to an auxiliary control box for testing mechanical characteristics of a switch. Background Art
[0002] The circuit breaker is the most important component in a switchgear cabinet and plays a vital role in the safe and stable operation of the power grid. The purpose of the circuit breaker mechanical characteristics test is to verify the mechanical performance and operational reliability of the circuit breaker. Currently, when conducting mechanical characteristics tests, the circuit breaker's aviation socket is usually unplugged and the circuit breaker cart is pulled to the maintenance position. At this time, the circuit breaker's control power supply, operating control lines, and other components are all disconnected from the system. During the mechanical characteristics test of the circuit breaker, there are problems such as inconvenient wiring, difficulty in matching signal pin definitions, the risk of adjacent pins shorting through wire clamps, and the inability to conduct tests due to lockouts. These problems lead to low test efficiency and low reliability. Utility Model Content
[0003] An embodiment of the present disclosure provides an auxiliary control box for testing mechanical characteristics of a switch, so as to solve the problems of low efficiency and low reliability during the test of mechanical characteristics of a switch.
[0004] The present disclosure provides an auxiliary control box for testing mechanical characteristics of a switch, comprising:
[0005] Control module, relay module, display module and power module.
[0006] The control module is connected to the relay module, display module, and power module, respectively. The display module is configured to display parameter information. The relay module is connected to the circuit breaker via a wiring port. The control module is configured to control the operating status of the relay module and power module based on the parameter information.
[0007] The power module is connected to the relay module and the display module respectively. The power module is configured to supply power to the control module, the relay module and the display module, and is also configured to supply power to the circuit breaker through the relay module.
[0008] In an exemplary embodiment of the present disclosure, a power module includes:
[0009] Unlock the power supply and energy storage power supply.
[0010] The unlocking power supply is connected to the circuit breaker through the relay module.
[0011] The control module is connected to the energy storage power supply through the relay module.
[0012] In an exemplary embodiment of the present disclosure, the unlocking power supply includes: an optocoupler U1 , an optocoupler U2 , a power supply VCC, a power supply VDD, a power supply VKK, a resistor R1 , and a resistor R2 .
[0013] The first end of the optocoupler U1 is connected to the power supply VCC, the second end of the optocoupler U1 is used to receive the signal V_in1, the third end of the optocoupler U1 is connected to the power supply VKK, and the fourth end of the optocoupler U1 is respectively connected to the first end of the resistor R1 and the third end of the optocoupler U2.
[0014] A first end of the optocoupler U2 is connected to the power supply VDD, a second end of the optocoupler U2 is used to receive a signal V_in2, and a fourth end of the optocoupler U2 is respectively connected to the second end of the resistor R1 and the first end of the resistor R2.
[0015] The first end of the resistor R2 is also used to connect to the circuit breaker, and the second end of the resistor R2 is used to be grounded.
[0016] In an exemplary embodiment of the present disclosure, the switch mechanical characteristic test auxiliary control box further includes: a fault self-detection module.
[0017] The fault self-test module includes a self-test switch and a simulated circuit breaker.
[0018] The self-test switch is connected to the control module and the simulation circuit breaker respectively.
[0019] The fault self-detection module is configured to detect status information of the auxiliary control box.
[0020] In an exemplary embodiment of the present disclosure, the switch mechanical characteristic test auxiliary control box further includes: a communication module.
[0021] The control module is connected to the external monitoring terminal through the communication module.
[0022] The control module is further configured to transmit data information to an external monitoring terminal, where the data information includes parameter information and status information.
[0023] In an exemplary embodiment of the present disclosure, a display module includes:
[0024] a first display unit and a second display unit.
[0025] The first display unit and the second display unit are both connected to the control module.
[0026] The first display unit is configured to display voltage information, and the second display unit is configured to display parameter information.
[0027] In an exemplary embodiment of the present disclosure, the switch mechanical characteristic test auxiliary control box further includes: a voltage regulation module.
[0028] The voltage regulation module is connected to the power supply module.
[0029] In an exemplary embodiment of the present disclosure, the switch mechanical characteristic test auxiliary control box further includes: an audible and visual alarm module.
[0030] The sound and light alarm module is connected with the control module.
[0031] The beneficial effects of the auxiliary control box for testing the mechanical characteristics of switches provided by the embodiments of the present disclosure are as follows: the auxiliary control box for testing the mechanical characteristics of switches enables quick wiring, automatically connecting the corresponding signal lines according to the switch model being tested. Furthermore, through a built-in independent power supply, functions such as energy storage power supply and unlocking are achieved. When using a circuit breaker mechanical characteristics tester for testing, the control line is connected to the auxiliary control box, and the circuit breaker's aviation plug is connected to the auxiliary control box. There is no need to search for signal terminal definitions for the device, and no temporary wiring is required, thus achieving the purpose of quick connection and efficient and reliable testing.
[0032] The disclosed embodiment adopts an intelligent design, designs a relay switching array (relay module), and cooperates with a high-power programmable adjustable operating power supply (power supply module) to realize an intelligent test auxiliary control device, which is more convenient and efficient to use, and has higher reliability. It can realize the characteristic testing functions of the circuit breaker's power supply, energy storage, and opening and closing operations. BRIEF DESCRIPTION OF THE DRAWINGS
[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.
[0034] Figure 1 This is a structural diagram of a switch mechanical characteristics test auxiliary control box provided by an embodiment of the present disclosure;
[0035] Figure 2 This is a structural diagram of another auxiliary control box for testing mechanical characteristics of a switch provided by an embodiment of the present disclosure;
[0036] Figure 3 is a circuit diagram of an unlocking power supply provided by an embodiment of the present disclosure. DETAILED DESCRIPTION
[0037] To help those skilled in the art better understand this solution, the following will clearly describe the technical solutions in the embodiments of this solution in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of this solution, not all of it. Based on the embodiments of this solution, all other embodiments obtained by those skilled in the art without creative work should fall within the scope of protection of this solution.
[0038] Throughout the specification, claims, and accompanying figures of this solution, the term "including" and any variations thereof mean "including, but not limited to," and are intended to cover non-exclusive inclusions and are not limited to the examples listed herein. Furthermore, the terms "first" and "second," etc., are used to distinguish between different objects, not to describe a specific order.
[0039] The following describes the implementation of the present disclosure in detail with reference to the accompanying drawings:
[0040] Figure 1 This is a schematic diagram of the structure of a switch mechanical characteristics test auxiliary control box provided by an embodiment of the present disclosure. Figure 1 The switch mechanical characteristic test auxiliary control box includes: a control module 101, a relay module 102, a display module 103 and a power supply module 104.
[0041] The control module 101 is connected to the relay module 102, the display module 103, and the power module 104. The display module 103 is configured to display parameter information. The relay module 102 is connected to the circuit breaker 12 via the connection port 11. The control module 101 is configured to control the operating status of the relay module 102 and the power module 104 based on the parameter information.
[0042] The power module 104 is connected to the relay module 102 and the display module 103 respectively. The power module 104 is configured to supply power to the control module 101 , the relay module 102 and the display module 103 . The power module 104 is also configured to supply power to the circuit breaker 12 through the relay module 102 .
[0043] In this embodiment, the auxiliary control box for testing switch mechanical characteristics includes its own control and operating power supply and supports automatic switching and transfer of test signals for various switch models, enabling automatic connection to different switch test signal pins. The auxiliary control box also includes a control panel (or instrument panel) equipped with a display module 103, wiring port 11, a power switch, an operating knob, and other features.
[0044] For example, existing circuit breakers 12 have various manufacturer models and specifications, each with its own distinct definitions. Circuit breakers 12 have numerous plug-in terminals and complex signals. Analyzing the defined pin data for each switch can serve as a basic information collection method. An intelligent design can be employed, utilizing a highly integrated industrial microcontroller unit (MCU) chip as the computing platform to design a relay switching array. This can be combined with a high-power programmable adjustable operating power supply, internally programmed with multiple switch type switching routines, to switch the test signal terminals to the panel wiring terminals, creating an intelligent test-assisted control device. The completed device is easy to use and fully functional, allowing for the addition of additional switch models, making it even more convenient, efficient, and reliable. The programmable power supply enables characteristic testing of the circuit breaker 12's power supply, energy storage, and opening and closing operations.
[0045] In this embodiment, the signal terminals corresponding to different switch models at different positions in the aviation plug need to be introduced into the corresponding action signal ports. That is, the control signal port connected to the auxiliary control box will connect the signals of multiple signal terminals through relays. During the switching process, a reliable connection and disconnection mechanism is required to ensure that while the correct signal is connected, other signals are disconnected to avoid signal interference. Multi-pole relays, multiple breakpoints, etc. can be used to ensure that the signal will not have problems such as short circuit, overlap, parasitic loops, etc. during the switching process and after the switching is completed.
[0046] In this embodiment, the signal lines that need to be connected for testing include a control power output interface and a control power input interface. Among them, the control power output interface includes: opening (+), closing (+), common (-), energy storage power supply 106 and locking power supply, etc. The control power output interface includes: opening (+), closing (+), common (-), etc. "+" represents the positive pole, and "-" represents the negative pole. These signal lines have different pin position definitions in the circuit breaker 12 aviation plug, depending on the manufacturer. This embodiment comprehensively counts the definitions of various switches, uses a relay array to simulate switching, and leads various signals to the opening (+), closing (+), common (-), energy storage power supply 106 and locking power supply connection ports 11 of the control box panel as needed.
[0047] For example, an aviation connector interface cable is designed, one end of which is connected to a standard 58-pin aviation plug connector. That is, the connection socket on the switch cabinet can be connected to the 58-pin plug of the circuit breaker 12 to realize the signal connection between the device and the switch. The other end is a small 20-pin aviation plug, and the corresponding aviation socket is installed on the auxiliary control box panel. The aviation plug and the 58-pin connector socket are connected with a cable. The number of connecting wires is a comprehensive calculation of the pins that may be used for various switches, and all the connecting wires are connected. The wiring switching logic of the operating voltage, locking, and energy storage of 5 common trolley switches is selected through the programmable relay, and the switching selection is performed during the test. The signal types may include: closing voltage output, dividing voltage output, common terminal, energy storage voltage, unlocking voltage, unlocking voltage, etc.
[0048] This embodiment integrates a control and operating power supply, allowing the control box to operate independently without an external power supply, greatly facilitating on-site testing operations. Furthermore, it supports automatic switching and transfer of test signals for multiple switch models, resolving the issue of inconsistent test signal pin definitions for circuit breakers 12 from different manufacturers, thereby achieving versatility and flexibility in the test equipment.
[0049] The control box features an intelligent design, using a highly integrated industrial microcontroller (MCU) chip as its computing platform. By program-controlling the relay switching array, it achieves fast and accurate switching of test signals. This design not only improves test efficiency but also reduces the possibility of human error, ensuring test accuracy and reliability.
[0050] The control box is also equipped with a control panel (or instrument panel), which is equipped with a display module 103, wiring port 11, power switch, operating knob, etc., making operation more intuitive and convenient. Users can easily set test parameters and view test results through the control panel, greatly improving the user experience.
[0051] During testing, the control box also features a reliable on / off mechanism, ensuring that while the correct signal is connected, other signals are disconnected to prevent signal interference. This design ensures test accuracy and safety, avoiding test errors and equipment damage caused by signal interference.
[0052] The control box is scalable and can add expansion switch models as needed to meet the testing needs of different users. At the same time, its built-in programmable power supply can also realize the characteristic testing functions of the power supply, energy storage, opening and closing operations of the circuit breaker 12, further improving the overall performance of the test equipment.
[0053] In summary, the design of the auxiliary control box for switch mechanical characteristics testing has brought significant beneficial effects in improving work efficiency, reducing operation difficulty, improving test accuracy, and ensuring test safety.
[0054] like Figure 2 As shown, in one embodiment of the present disclosure, the power module 104 includes:
[0055] Unlock the power supply 105 and the energy storage power supply 106.
[0056] The unlocking power supply 105 is connected to the circuit breaker 12 through the relay module 102 .
[0057] The control module 101 is connected to the energy storage power supply 106 through the relay module 102 .
[0058] In this embodiment, the energy storage power supply 106 may include a high-power DC adjustable power supply with an input voltage of AC 220V ±10%, 50Hz ±10%, a DC output of 0-270V, and a maximum instantaneous output of 40A. This can meet the switching action voltage test and function as the energy storage power supply 106.
[0059] In this embodiment, different circuit breakers 12 have different operating voltage types. For example, the energy storage power supply 106 and the closing and opening power supply are typically the same power supply. Common trolley switches have energy storage voltages of DC220V or DC110V, though some also use DC24V or DC48V. The auxiliary control box provided in this embodiment takes into account multiple voltage types and can accommodate a wider range of circuit breaker 12 tests. The output of the locking power supply requires independent control to prevent it from being affected by energy storage and opening and closing signals.
[0060] For example, the auxiliary control box includes a built-in high-power operating power supply (DC0-270V, 15A output), enabling the auxiliary control box to independently control the closing, opening, and operating voltage of the circuit breaker 12. The energy storage power supply 106 and the closing and opening power supply are integrated within the device and switched using relays. While common trolley switches use a DC220V or DC110V power supply for energy storage, this design utilizes a DC adjustable high-power power supply with a rated current of 15A. This design can meet the energy storage requirements of DC24V, DC48V, DC110V, and DC220V switches.
[0061] Exemplarily, the built-in high-power DC switching power supply may include multiple components:
[0062] AC power input: The AC power input is converted to DC power through a rectification and filtering process. The AC input passes through a two-stage choke absorber to filter out interference from the grid input power to the switching power supply.
[0063] High-frequency pulse width modulation (PWM) signal control: The switching tube is controlled by a high-frequency PWM signal to apply DC power to the primary of the switching transformer.
[0064] Switching transformer secondary induction: The secondary induction of the switching transformer receives the high-frequency voltage and supplies it to the load after rectification and filtering.
[0065] Output feedback control: The output part is fed back to the control circuit through a certain circuit to control the PWM duty cycle, thereby achieving stable control of the output voltage.
[0066] Protection circuit: In order to increase the reliability and safety of the power supply, protection circuits are added, such as no-load, short circuit, overvoltage, overcurrent, overheating and other protections to prevent power supply damage or safety accidents.
[0067] In addition, several optimization measures are considered during the design of high-power DC switching power supplies. For example, while ensuring output power, increasing the switching frequency can reduce the size of the switching transformer, and high-quality, high-power, fast-response switching transistors (IGBTs) and diodes are selected. The secondary of the switching transformer can have multiple windings, or a single winding can have multiple taps, to achieve the required output voltage and power.
[0068] The power module 104 of this embodiment features a sophisticated design and strong compatibility. Utilizing a high-power, adjustable DC power supply, it ensures wide adaptability to various circuit breaker 12 operating voltages. The independently controlled latching power supply design effectively prevents interference from energy storage and opening / closing signals, enhancing system stability and safety. Built-in high-frequency PWM control technology and an optimized switching power supply design not only improve power efficiency but also enhance reliability and durability.
[0069] like Figure 3 As shown, in one embodiment of the present disclosure, the unlocking power supply 105 includes: an optocoupler U1, an optocoupler U2, a power supply VCC, a power supply VDD, a power supply VKK, a resistor R1 and a resistor R2.
[0070] The first end of the optocoupler U1 is connected to the power supply VCC, the second end of the optocoupler U1 is used to receive the signal V_in1, the third end of the optocoupler U1 is connected to the power supply VKK, and the fourth end of the optocoupler U1 is respectively connected to the first end of the resistor R1 and the third end of the optocoupler U2.
[0071] A first end of the optocoupler U2 is connected to the power supply VDD, a second end of the optocoupler U2 is used to receive a signal V_in2, and a fourth end of the optocoupler U2 is respectively connected to the second end of the resistor R1 and the first end of the resistor R2.
[0072] A first end of the resistor R2 is also used to connect to the circuit breaker 12 , and a second end of the resistor R2 is used to be grounded.
[0073] In this embodiment, both the signal V_in1 and the signal V_in2 are generated and transmitted by the control module 101. When the signal V_in1 is input to the second end of the optocoupler U1, if the signal V_in1 meets the conduction condition of the optocoupler, the optocoupler U1 is turned on, and a path is formed between its third and fourth ends, and current flows from the power supply VKK through the fourth end of the optocoupler U1. At the same time, when the signal V_in2 is input to the second end of the optocoupler U2 and meets the conduction condition, the optocoupler U2 is also turned on, and current flows from the power supply VDD through the third and fourth ends of the optocoupler U2. At this time, the fourth end of the optocoupler U1 and the fourth end of the optocoupler U2 are commonly connected to the first end of the resistor R1, and are connected to the circuit breaker 12 through the resistor R1 and the resistor R2. The resistor R1 and the resistor R2 act as a voltage divider. By controlling the input signals V_in1 and V_in2 , the conduction states of the optocoupler U1 and the optocoupler U2 can be adjusted, thereby controlling the current and voltage output to the circuit breaker 12 , thereby achieving an unlocking operation on the circuit breaker 12 .
[0074] For example, when only the optocoupler U1 is turned on, the voltage output to the circuit breaker 12 is the voltage value of the first end of the resistor R1. When both the optocoupler U1 and the optocoupler U2 are turned on, the voltage output to the circuit breaker 12 is the voltage value of the second end of the resistor R1. When the resistance values of the resistors R1 and R2 are the same and the output voltage of the power supply VKK is 220V, the voltage output to the circuit breaker 12 can be controlled to switch between 220V and 110V by adjusting the conduction state of the optocoupler U1 and the optocoupler U2. Specifically, when the optocoupler U1 is turned on and the optocoupler U2 is not turned on, 220V is output; when the optocoupler U1 is turned on and the optocoupler U2 is turned on, 110V is output.
[0075] For example, the unlocking power supply 105 adopts a switching power supply design to control the conduction and shutdown of the optical coupler, and can realize DC110V and DC220V switching control. The power of the unlocking power supply 105 can be set to 60W, realizing DC110 / 220 dual voltage output.
[0076] In this embodiment, the resistors R1 and R2 can be replaced with sliding rheostats according to different requirements. Different voltage dividing effects can be achieved by changing the resistance value of the sliding rheostat according to different output voltage requirements.
[0077] The unlocking power supply 105 of this embodiment enhances circuit flexibility through the combination of an optocoupler and a resistor. By controlling the optocoupler's conduction state, the output voltage can be adjusted to meet the needs of different applications. Furthermore, the use of a switching power supply design further enhances the stability and reliability of the power supply, ensuring the normal operation of the circuit breaker 12.
[0078] like Figure 2 As shown, in one embodiment of the present disclosure, the switch mechanical characteristic test auxiliary control box further includes: a fault self-detection module 107 .
[0079] The fault self-detection module 107 includes a self-detection switch 108 and a simulated circuit breaker 109 .
[0080] The self-test switch 108 is connected to the control module 101 and the simulated circuit breaker 109 respectively.
[0081] The fault self-detection module 107 is configured to detect status information of the auxiliary control box.
[0082] In this embodiment, the fault self-check module 107 starts the status detection of the auxiliary control box through the self-check switch 108. When the self-check switch 108 is pressed, the control module 101 receives the self-check signal and starts to detect the various modules of the auxiliary control box. In this process, the simulated circuit breaker 109 simulates the working status and signal feedback of the real circuit breaker 12 and interacts with other modules of the auxiliary control box. The control module 101 determines the working performance and possible problems of the auxiliary control box when connected to similar devices by communicating with the simulated circuit breaker 109 and monitoring its status. For example, the control module 101 can send a control signal to the simulated circuit breaker 109 to observe whether the response of the simulated circuit breaker 109 meets expectations, thereby detecting the action accuracy of the relay module 102, the power supply stability of the power module 104, and the data transmission reliability of the communication module 110.
[0083] For example, self-test switch 108 can be a physical button or an electronic switch connected to a specific input pin of control module 101. When the switch state changes, it triggers an interrupt or detection circuit in control module 101, initiating a self-test procedure. Simulated circuit breaker 109 can be composed of electronic circuits and analog components, capable of simulating various states and actions of circuit breaker 109, such as opening and closing states, and fault conditions. It is connected to self-test switch 108 and control module 101 via wires to enable signal transmission and feedback.
[0084] For example, in an electric power equipment maintenance workshop, a technician is preparing to use a switch mechanical characteristic test auxiliary control box to test a batch of circuit breakers 12. Before use, the technician presses the self-test switch 108 to start the fault self-test module 107. The control module 101 begins to perform a comprehensive test on the auxiliary control box. If it is found during the test that the relay module 102 cannot switch the state normally, the control module 101 will display this fault information on the display module 103, and send it to the external monitoring terminal 13 through the communication module 110 to remind the technician to perform maintenance. At the same time, the simulated circuit breaker 109 can simulate various fault conditions, such as refusal to open the switch, inadequate closing, etc., to help technicians discover problems that may occur in actual testing in advance, ensure that the auxiliary control box can work normally when testing the real circuit breaker 12, and improve test efficiency and safety.
[0085] This embodiment significantly improves the reliability and safety of the equipment by introducing a fault self-diagnosis module 107. This module simulates real-world operating scenarios using a simulated circuit breaker 109, effectively preventing potential failures. During power equipment maintenance, this design significantly shortens troubleshooting time, improves work efficiency, and ensures the safety and accuracy of the testing process.
[0086] like Figure 2 As shown, in one embodiment of the present disclosure, the switch mechanical characteristic test auxiliary control box further includes: a communication module 110 .
[0087] The control module 101 is connected to the external monitoring terminal 13 via the communication module 110 .
[0088] The control module 101 is further configured to transmit data information to the external monitoring terminal 13 , where the data information includes parameter information and status information.
[0089] In this embodiment, the communication module 110 in the auxiliary control box for testing mechanical characteristics of switches serves as a bridge between the control module 101 and the external monitoring terminal 13. The control module 101 collects parameter information (such as voltage and current) and status information (such as the on / off status of relays and the operating status of the power module 104) from each module. After processing, this data is transmitted to the external monitoring terminal 13 via the communication module 110 using a specific communication protocol. The external monitoring terminal 13 can be a computer, tablet computer, or dedicated monitoring device. This allows operators to remotely monitor the operating status of the control box and the connected circuit breaker 12 in real time, enabling timely decision-making and adjustments. Furthermore, historical data can be stored and analyzed, providing a basis for equipment maintenance and optimization.
[0090] This embodiment utilizes the communication module 110 to efficiently connect the control module 101 to the external monitoring terminal 13. This design not only improves the real-time and accuracy of data transmission but also greatly facilitates remote monitoring and management. Operators can promptly monitor the operating status of the control box and circuit breaker 12, respond promptly to abnormal situations, and ensure the safe operation of the equipment. Furthermore, the ability to record and analyze historical data provides strong support for equipment maintenance and performance optimization, further enhancing equipment management and operational efficiency.
[0091] In one embodiment of the present disclosure, the display module 103 includes:
[0092] a first display unit and a second display unit.
[0093] The first display unit and the second display unit are both connected to the control module 101 .
[0094] The first display unit is configured to display voltage information, and the second display unit is configured to display parameter information.
[0095] In this embodiment, the first display unit can display the output voltage information of the built-in DC power supply in real time.
[0096] Exemplarily, the second display unit may include a liquid crystal screen, such as a large-screen dot matrix display with backlight, which is not affected by ambient light and is convenient for viewing, observation and operation. The input method may include key input, such as a more commonly used 9-grid key design with up, down, left, right, confirm, and return keys, which is simple and convenient to operate. The parameter information may include the model of the circuit breaker 12. After selecting one of the models, parameter information such as the locking voltage, energy storage voltage, operating power supply, closing, opening, pin connection information, and remarks information can be displayed. A custom adapter unit can also be selected.
[0097] This embodiment uses a first display unit to display voltage information in real time, while a second display unit displays various parameter information on an LCD screen. Featuring a large dot matrix display and backlight, this ensures clear viewing and operation in a variety of environments. Furthermore, a 9-grid keypad design provides convenient operation. Furthermore, support for 12 different circuit breaker models and custom adapter units enhances system flexibility and practicality.
[0098] like Figure 2 As shown, in one embodiment of the present disclosure, the switch mechanical characteristic test auxiliary control box further includes: a voltage regulation module 111 .
[0099] The voltage regulation module 111 is connected to the power supply module 104 .
[0100] In this embodiment, the voltage regulator module 111 is connected to the power module 104. Its primary function is to adjust the voltage output by the power module 104 to meet different testing requirements. When a different voltage value is required to power the control module 101, relay module 102, display module 103, and circuit breaker 12, the control module 101 can send a command to the voltage regulator module 111. Based on the command, the voltage regulator module 111 uses its internal circuit structure, such as components such as a transformer, voltage stabilizer, and variable resistor, to increase or decrease the voltage output by the power module 104, thereby outputting a specific voltage value that meets the requirements.
[0101] For example, a programmable digital potentiometer or a variable resistor network in an analog circuit combined with an operational amplifier can be used. The resistance of the digital potentiometer is adjusted by a digital signal sent by the control module 101, or the resistance of the variable resistor network is controlled by an analog signal, thereby changing the output voltage.
[0102] This embodiment, by adding a voltage regulator module 111, achieves flexible adjustment of the output voltage of the power module 104, effectively meeting diverse testing requirements. This design not only improves test accuracy, but also broadens the test range, allowing the control box to adapt to more types of tested devices.
[0103] like Figure 2 As shown, in one embodiment of the present disclosure, the switch mechanical characteristic test auxiliary control box further includes: an audible and visual alarm module 112 .
[0104] The sound and light alarm module 112 is connected to the control module 101 .
[0105] For example, a technician uses the switch mechanical characteristics test auxiliary control box to perform a mechanical characteristics test on the circuit breaker 12 in a high-voltage switchgear cabinet. When the control module 101 begins testing the circuit breaker 12, if an abnormality occurs, the control module 101 immediately sends a signal to the sound and light alarm module 112. For example, during the test, if the connection between the relay module 102 and the circuit breaker 12 becomes loose, resulting in unstable current or signal transmission, the control module 101 detects the parameter abnormality and triggers the sound and light alarm module 112. At this time, the sound and light alarm module 112 emits a loud alarm and flashes lights, reminding the technician to promptly inspect and address the problem.
[0106] For another example, when the power module 104 fails and cannot normally supply power to each module or the circuit breaker 12, an audible and visual alarm will be triggered so that technicians can quickly locate the problem and take corresponding measures to ensure the safety and smooth progress of the test work.
[0107] This embodiment adds an audible and visual alarm module 112 to provide immediate feedback on abnormal conditions. When circuit breaker 12 detects anomalies such as looseness, unstable current, or power failure, the audible and visual alarms respond quickly, alerting technicians with sounds and lights, ensuring test safety, accelerating problem resolution, and improving work efficiency.
[0108] The above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present disclosure.
Claims
1. A switch mechanical characteristics test auxiliary control box, characterized in that: include: Control module, relay module, display module and power module; The control module is respectively connected to the relay module, the display module and the power module; the display module is configured to display parameter information; the relay module is connected to the circuit breaker through the wiring port; the control module is configured to control the working status of the relay module and the power module according to the parameter information; The power module is connected to the relay module and the display module respectively; the power module is configured to supply power to the control module, the relay module and the display module, and the power module is also configured to supply power to the circuit breaker through the relay module.
2. The switch mechanical characteristics test auxiliary control box according to claim 1, characterized in that: The power module includes: Unlocking power supply and energy storage power supply; The unlocking power supply is connected to the circuit breaker through the relay module; The control module is connected to the energy storage power supply through the relay module.
3. The switch mechanical characteristics test auxiliary control box according to claim 2, characterized in that: The unlocking power supply includes: an optical coupler U1, an optical coupler U2, a power supply VCC, a power supply VDD, a power supply VKK, a resistor R1 and a resistor R2; The first end of the optocoupler U1 is connected to the power supply VCC, the second end of the optocoupler U1 is used to receive the signal V_in1, the third end of the optocoupler U1 is connected to the power supply VKK, and the fourth end of the optocoupler U1 is respectively connected to the first end of the resistor R1 and the third end of the optocoupler U2; The first end of the optocoupler U2 is connected to the power supply VDD, the second end of the optocoupler U2 is used to receive the signal V_in2, and the fourth end of the optocoupler U2 is respectively connected to the second end of the resistor R1 and the first end of the resistor R2; The first end of the resistor R2 is also used to connect to the circuit breaker, and the second end of the resistor R2 is used to be grounded.
4. The switch mechanical characteristics test auxiliary control box according to claim 1, characterized in that: Also includes: Fault self-diagnosis module; The fault self-test module includes a self-test switch and a simulated circuit breaker; The self-test switch is connected to the control module and the simulated circuit breaker respectively; The fault self-detection module is configured to detect status information of the auxiliary control box.
5. The switch mechanical characteristics test auxiliary control box according to claim 4, characterized in that: Also includes: Communication module; The control module is connected to the external monitoring terminal via the communication module; The control module is further configured to transmit data information to the external monitoring terminal, where the data information includes the parameter information and the status information.
6. The switch mechanical characteristics test auxiliary control box according to claim 1, characterized in that: The display module includes: a first display unit and a second display unit; The first display unit and the second display unit are both connected to the control module; The first display unit is configured to display voltage information, and the second display unit is configured to display the parameter information.
7. The switch mechanical characteristics test auxiliary control box according to claim 1, characterized in that: Also includes: Voltage regulation module; The voltage regulation module is connected to the power supply module.
8. The switch mechanical characteristics test auxiliary control box according to claim 1, characterized in that: Also includes: Sound and light alarm module; The sound and light alarm module is connected to the control module.