Quick response and standard response separated tripping control circuit and method

Abstract

The invention relates to a quick response and standard response separated tripping control circuit and method, and the method comprises a control module, a unified tripping drive module, a standard response tripping signal input module, and a quick response tripping signal input module. The standard signal output end of the standard response tripping signal input module is connected with the standard signal input end of the control module, and the standard signal output end of the control module is connected with the standard signal input end of the unified tripping driving module. The quick signal output end of the quick response trip signal input module is connected with the quick signal input end of the unified trip driving module, so that all signals are prevented from being processed by the MCU, response delay is reduced, the unified trip driving module can receive standard signals and quick signals at the same time, a trip coil is controlled to execute trip action, and the service life of the trip coil is prolonged. Therefore, the circuit design is simplified, and the complexity and the cost of the system are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of disconnection trip control, and in particular, to a trip control circuit and method for separating fast response and standard response. Background Art

[0002] Currently, in the fields of high-voltage direct current power transmission, rail transit power supply, and energy storage systems, DC circuit breakers, as important protection devices in the power system, are responsible for quickly disconnecting the circuit in case of faults such as short circuits and overloads to prevent further damage to electrical equipment. However, there are some problems to be solved urgently in the existing DC circuit breaker control technology. First, traditional control systems mostly rely on microcontrollers (MCUs) to process various signals. Although this method can perform the trip operation, in case of emergency faults such as short circuits or severe overloads, due to the limited processing speed of the MCU, there is an obvious response delay, which cannot meet the millisecond-level trip requirement, thus affecting the fault handling efficiency of the system. Second, in order to balance the trip requirements of fast response and standard response, the existing designs usually handle them separately, which results in the system requiring additional hardware support, increasing hardware redundancy, not only increasing the complexity of the system but also increasing the overall cost. Summary of the Invention

[0003] In order to solve the problems of the existing DC circuit breaker in terms of reduced fault handling efficiency and increased cost caused by response delay and hardware redundancy, the present application provides a trip control circuit and method for separating fast response and standard response.

[0004] A trip control circuit for separating fast response and standard response, the trip control circuit for separating fast response and standard response includes a control module, a unified trip driving module, a standard response trip signal input module, a fast response trip signal input module, and a trip coil. The standard signal output end of the standard response trip signal input module is connected to the standard signal input end of the control module. The standard signal output end of the control module is connected to the standard signal input end of the unified trip driving module. The fast signal output end of the fast response trip signal input module is connected to the fast signal input end of the unified trip driving module. The power output end of the unified trip driving module is connected to the trip coil. The unified trip driving module is configured to receive the standard signal and the fast signal, and perform the trip action of the trip coil according to the trip requirement corresponding to the standard signal or the fast signal.

[0005] By adopting the above technical solution, by separately inputting the standard response trip signal and the fast response trip signal, the standard response signal is transmitted to the control module through the standard signal input module, while the fast response signal is transmitted to the unified trip drive module through the dedicated fast response trip signal input module. This design avoids all signals passing through the microcontroller (MCU) for processing, thereby reducing the response delay. Especially in emergency situations, the fast response signal can directly trigger the trip action without going through complex calculation and judgment processes. In this way, the system can respond immediately when a fault occurs, meeting the millisecond-level trip requirement. Secondly, the unified trip drive module can receive both the standard signal and the fast signal simultaneously, controlling the trip coil to execute the trip action, thus avoiding the need for independently designed hardware in traditional systems to achieve fast response and standard response. This change reduces hardware redundancy, simplifies the circuit design, and lowers the complexity and cost of the system. The power output terminal of the unified trip drive module is connected to the trip coil, ensuring that the trip action can be executed timely and reliably whether in the fast response or standard response mode, further improving the stability and reliability of the system. In addition, the classified processing of trip requirements ensures that the system can select the appropriate response method according to different fault types (such as short circuit or overload). This optimized control method helps to improve the overall fault protection effect.

[0006] Preferably, the unified trip drive module includes an isolation drive element U2, a debounce element U4, a thyristor SCR1, and a polar capacitor D1. The first signal input terminal of the isolation drive element U2 is connected to the standard signal output terminal of the control module, the second signal input terminal of the isolation drive element U2 is connected to the fast signal output terminal of the fast response trip signal input module, the signal output terminal of the isolation drive element U2 is connected to the signal input terminal of the debounce element U4, the signal output terminal of the debounce capacitor is connected to the controlled terminal of the thyristor SCR1, the first conducting terminal of the thyristor SCR1 is connected to the power supply, the second conducting terminal of the thyristor SCR1 is connected to the first end of the trip coil, the second end of the trip coil is connected to the negative extreme of the polar capacitor D1, and the common node between the first conducting terminal of the thyristor SCR1 and the power supply is connected to the positive extreme of the polar capacitor D1.

[0007] By adopting the above technical solution, by including components such as an isolation drive element, a debounce element, a thyristor, and a polar capacitor in the unified trip drive module, it can effectively avoid the interference of signal noise when receiving the trip signal, ensuring the stability and reliability of the signal, thereby improving the response accuracy of the system to faults; through the cooperation of the isolation drive element and the debounce element, it can reduce the risk of the system being affected by external electrical interference, ensuring the stable operation of the system in a high-noise environment, thus improving the safety of the system.

[0008] Preferably, the fast-response trip signal input module includes terminal P13, terminal P14, and trip monitoring component U3. Both terminal P13 and terminal P14 are connected to the second signal input terminal of isolation driving component U2. The common node between terminal P13 and the second signal input terminal of isolation driving component U2 is connected to the first input signal monitoring terminal of trip monitoring component U3. The common node between terminal P14 and the second signal input terminal of isolation driving component U2 is connected to the second input signal monitoring terminal of trip monitoring component U3. The common node between the first conducting end of thyristor SCR1 and the power supply is connected to the first output signal monitoring terminal of trip monitoring component U3. The common node between the second conducting end of thyristor SCR1 and the first end of the trip coil is connected to the second output signal monitoring terminal of trip monitoring component U3. The monitoring signal output terminal of trip monitoring component U3 is connected to the monitoring signal input terminal of the control module.

[0009] By adopting the above technical solution, by connecting the trip monitoring component of the fast-response trip signal input module to the monitoring signal input terminal of the control module, the execution situation of the trip signal can be monitored in real time, and the trip state can be fed back in time, so as to ensure the traceability and accuracy of each step in the fault handling process; by monitoring the trip action, corresponding decisions can be made whether the trip action is executed successfully or not, ensuring that the system can be quickly restored or fault checked, thereby improving the reliability and fault tolerance of the system.

[0010] Preferably, the standard-response trip signal input module includes terminal P1, terminal P2, and optocoupler Q1. Terminal P1 is connected to the positive extreme of the light-emitting diode part of optocoupler Q1. The negative extreme of the light-emitting diode part of optocoupler Q1 is connected to terminal P2. The first conducting end of the photosensitive triode part of optocoupler Q1 is connected to the power supply. The second conducting end of the photosensitive triode part of optocoupler Q1 is connected to the standard signal input terminal of the control module.

[0011] By adopting the above technical solution, through the application of the optocoupler in the standard-response trip signal input module, the electrical noise in the signal transmission process can be effectively isolated, avoiding interference from affecting the normal operation of the system, thereby improving the stability of signal transmission and the anti-interference ability of the system; by connecting the photosensitive triode part of the optocoupler to the control module, the reliable transmission of the standard signal can be realized, so as to ensure that the system can still make accurate trip decisions under non-emergency conditions and ensure the safety of the equipment.

[0012] Preferably, the trip control circuit with separation of fast response and standard response further includes a reset control module and a closing control module. The reset control module includes a triode T1 and a reset coil C3, and the closing control module includes a triode T2 and a closing coil C2 for the reset detection of the control module; The first end of the reset coil C3 is connected to the power output end of the control module. The second end of the reset coil C3 is connected to the first conducting end of the triode T1. The second conducting end of the triode T1 is grounded, and the controlled end of the triode T1 is connected to the reset drive signal output end of the control module; The first end of the closing coil C2 is connected to the power output end of the control module. The second end of the closing coil C2 is connected to the first conducting end of the triode T2. The second conducting end of the triode T2 is grounded, and the controlled end of the triode T2 is connected to the closing drive signal output end of the control module.

[0013] By adopting the above technical solution, through the design of the reset control module and the closing control module, the reset and closing operations of the circuit breaker can be realized after tripping, ensuring that the system can quickly resume normal operation after troubleshooting, thereby improving the automation level and recovery ability of the system; through the linkage of the control module with the reset and closing coils, the reset and closing operations can be accurately controlled, avoiding manual intervention, reducing operation errors, and improving the reliability of the system.

[0014] Preferably, the trip control circuit with separation of fast response and standard response further includes a clamping protection module. The clamping protection module includes a protection unit, diodes D1, D2, D3, and D4; The common node between the second end of the reset coil C3 and the first conducting end of the triode T1 is connected to the positive electrode of the diode D1. The negative electrode of the diode D1 is connected to the first signal input end of the protection unit. The diode D2 is arranged in parallel with the triode T1, and the current direction of the diode D2 is opposite to that of the triode T1; The common node between the second end of the closing coil C2 and the first conducting end of the triode T2 is connected to the positive electrode of the diode D3. The negative electrode of the diode D3 is connected to the second signal input end of the protection unit. The diode D4 is arranged in parallel with the triode T2, and the current direction of the diode D4 is opposite to that of the triode T2.

[0015] By adopting the above technical solutions, through the design of the clamping protection module, additional protection can be provided during the reset and closing processes to prevent damage caused by excessive current or abnormal voltage, enhancing the protection ability of the system; through the cooperation of the diode and the triode, the fluctuations of current and voltage can be effectively restricted, ensuring that the system is not affected by electrical shocks during the reset and closing processes, thereby improving the stability and safety of the system.

[0016] A trip control method for separating fast response from standard response, which is applied to a trip control circuit for separating fast response from standard response. The trip control method for separating fast response from standard response includes: Obtain system status data, and judge whether to enter the preparation state for executing the trip action according to the system status data; If it is necessary to enter the preparation state for executing the trip action, then judge whether a fast trip request is detected. If a fast trip request is detected, execute the trip action of the trip coil through the unified trip drive module, and / or set the corresponding fault state; If a fast trip request is not detected, then judge whether a standard trip request is detected. If a standard trip request is detected, perform trip logic judgment through the control module to determine whether to send a trip signal to the unified trip drive module, and then execute the trip action of the trip coil, and / or determine whether to set the corresponding fault state; If a standard trip request is not detected, then judge whether a closing request is detected. If a closing request is detected, perform closing logic judgment through the control module to determine whether to send a closing signal to the closing drive module, and then execute the closing action of the closing coil, and / or determine whether to set the corresponding fault state; If a closing request is not detected, then output the corresponding fault handling instruction or display the communication instruction according to the fault state.

[0017] By adopting the above technical solutions, by obtaining system status data and judging whether to enter the preparation state for executing the trip action, data can be collected in real time before system faults and decisions can be made, thereby improving the timeliness of fault response; by judging whether a fast trip request is detected, emergency faults can be preferentially processed to ensure that the circuit is cut off in the shortest time, thereby enhancing the fault handling ability of the system; by judging whether a standard trip request is detected and performing logic judgment, reasonable judgments can be made in non-emergency situations to ensure the stable operation of the system, avoid unnecessary trip operations, and thereby improve the reliability and operating efficiency of the system.

[0018] Preferably, in the step of if a fast trip request is detected, then execute the trip action of the trip coil through the unified trip drive module, and / or set the corresponding fault state, the fault state includes a system fault state and a reset fault state, and the step further includes: If a fast tripping request is detected, the tripping operation of the tripping coil is performed through the unified tripping drive module, and it is judged whether the tripping operation is successfully executed. If the tripping operation is not successfully executed, the system fault state is set. If the tripping operation is successfully executed, a reset operation is performed, and it is judged whether the reset operation is successfully executed. If the reset operation is successfully executed, it is determined that the tripping operation is completed. If the reset operation is not successfully executed, the reset fault state is set.

[0019] By adopting the above technical solution, through the detection of the fast tripping request and the judgment of the successful execution of the tripping operation, it can ensure that the tripping operation can be successfully executed in an emergency, thereby improving the reliability of the fault protection; by judging whether the reset operation is successfully executed, it can ensure that the system function is restored through reset in case of tripping failure, thereby enhancing the fault tolerance of the system; by setting the reset fault state when the reset operation fails, it can timely feedback the fault information and avoid the system from continuing to run, ensuring safety.

[0020] Preferably, in the step of, if a standard tripping request is detected, the tripping logic is judged by the control module to determine whether to send a signal to the unified tripping drive module, and then the tripping operation of the tripping coil is performed, and / or to determine whether to set the corresponding fault state, the tripping logic judgment includes judging whether the first power supply voltage reaches the first preset voltage, judging whether the unified tripping drive module is in the closing state, and judging whether the first delay condition predetermined for the tripping operation is completed. The fault state includes the tripping condition fault state, and the step includes: If a standard tripping request is detected, the control module obtains the first power supply voltage of the power supply for the tripping operation, and judges whether the power supply voltage reaches the first preset voltage. If it does not reach the first preset voltage, the tripping condition fault state is set. If it reaches the first preset voltage, the control module judges whether the unified tripping drive module is in the closing state. If it is not in the closing state, the system state data is re-obtained, and it is judged whether to enter the preparation state for performing the tripping operation according to the system state data. If it is in the closing state, it is judged whether the first delay condition predetermined for the tripping operation is completed. If it is not completed, the system state data is re-obtained, and it is judged whether to enter the preparation state for performing the tripping operation according to the system state data. If it has been completed, a tripping signal is sent to the unified tripping drive module, and then the tripping operation of the tripping coil is performed.

[0021] By adopting the above technical solution, by judging whether the power supply voltage reaches the preset voltage and performing the tripping operation according to this judgment, it is possible to ensure that the tripping operation is performed when the power supply is sufficient, avoid operation failures caused by insufficient power, and thus enhance the reliability of the system; by judging whether the unified tripping drive module is in the closing state, it is possible to effectively control the tripping timing, avoid misoperations caused by unsuitable system states, and thus improve the accuracy of the tripping decision.

[0022] Preferably, in the step of, if a closing request is detected, then the control module performs a closing logic judgment to determine whether to send a closing signal to the closing drive module, and further perform the closing operation of the closing coil, and / or determine whether to set the corresponding fault state, the closing logic judgment includes judging whether the second power supply voltage reaches the second preset voltage, judging whether the unified tripping drive module is in the tripping state, and judging whether the second delay condition pre-determined for the closing operation is completed, the fault state includes a closing condition fault state, and the step includes: If a closing and tripping request is detected, then the control module obtains the second power supply voltage of the power supply for the closing operation, and judges whether the second power supply voltage reaches the second preset voltage. If it does not reach the second preset voltage, then the closing condition fault state is set; If it reaches the second preset voltage, then the control module judges whether the unified tripping drive module is in the tripping state. If it is not in the tripping state, then the system state data is re-obtained, and according to the system state data, it is judged whether to enter the preparation state for performing the tripping operation; If it is in the tripping state, then it is judged whether the second delay condition pre-determined for the closing operation is completed. If it is not completed, then the system state data is re-obtained, and according to the system state data, it is judged whether to enter the preparation state for performing the tripping operation; If it has been completed, then a closing signal is sent to the closing drive module, and further the closing operation of the closing coil is performed.

[0023] By adopting the above technical solution, by judging whether the closing request and the power supply voltage meet the closing conditions, it is possible to ensure that the closing operation is performed under appropriate power conditions, avoid closing failures caused by insufficient power or abnormal system states, and thus improve the stability of the system; by judging whether the delay condition of the closing operation is completed, it is possible to accurately control the closing timing and ensure the safety and reliability of the system recovery operation.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: In this application, the standard response trip signal and the fast response trip signal are input separately. The standard response signal is transmitted to the control module through the standard signal input module, while the fast response signal is transmitted to the unified trip drive module through the dedicated fast response trip signal input module. This design avoids all signals being processed by the microcontroller (MCU), thereby reducing the response delay. Especially in emergency situations, the fast response signal can directly trigger the trip action without going through complex calculation and judgment processes. In this way, the system can respond immediately when a fault occurs, meeting the millisecond-level trip requirements. Secondly, the unified trip drive module can receive both the standard signal and the fast signal simultaneously, controlling the trip coil to execute the trip action, thus avoiding the need for independent hardware designs in traditional systems to achieve fast response and standard response. This change reduces hardware redundancy, simplifies the circuit design, and lowers the complexity and cost of the system. The power output terminal of the unified trip drive module is connected to the trip coil, ensuring that the trip action can be executed timely and reliably whether in the fast response or standard response mode, further improving the stability and reliability of the system. In addition, the classified processing of trip requirements ensures that the system can select appropriate response methods according to different fault types (such as short circuit or overload). This optimized control method helps to enhance the overall fault protection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a flow block diagram of a trip control circuit with separated fast response and standard response in an embodiment of this application.

[0026] Figure 2 is a specific structural schematic diagram of a trip control circuit with separated fast response and standard response in an embodiment of this application; Figure 3 is a flowchart of a trip control method with separated fast response and standard response in an embodiment of this application; Figure 4 is another implementation flowchart of step S20 in a trip control method with separated fast response and standard response in an embodiment of this application; Figure 5 is an implementation flowchart of step S30 in a trip control method with separated fast response and standard response in an embodiment of this application; Figure 6 is an implementation flowchart of step S40 in a trip control method with separated fast response and standard response in an embodiment of this application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The following further describes this application in detail with reference to the accompanying drawings.

[0028] In one embodiment, as Figure 1As shown, the present application discloses a trip control circuit with separation of fast response and standard response. A trip control circuit with separation of fast response and standard response includes a control module, a unified trip drive module, a standard response trip signal input module, a fast response trip signal input module, and a trip coil. The standard signal output terminal of the standard response trip signal input module is connected to the standard signal input terminal of the control module. The standard signal output terminal of the control module is connected to the standard signal input terminal of the unified trip drive module. The fast signal output terminal of the fast response trip signal input module is connected to the fast signal input terminal of the unified trip drive module. The power output terminal of the unified trip drive module is connected to the trip coil. The unified trip drive module is used to receive the standard signal and the fast signal, and perform the trip action of the trip coil according to the trip requirements corresponding to the standard signal or the fast signal.

[0029] In this embodiment, first, the standard response trip signal input module is responsible for receiving the standard response trip signal from the external system. These signals usually come from relatively minor fault conditions, such as overload, etc. Such faults have little impact on the system and do not require immediate tripping. Therefore, the standard response trip signal input module transmits these signals to the control module, which will judge whether to perform the trip operation according to the received signals to ensure that unnecessary tripping will not occur due to non-emergency situations. After the standard response trip signal is judged by the control module, if the trip operation needs to be performed, the control module will send the corresponding signal to the unified trip drive module, and this module will perform the trip action.

[0030] On the other side, the fast response trip signal input module is responsible for receiving the emergency trip signal from the system, such as sudden faults like short circuit. Such signals require fast response and cannot rely on complex control logic and delays. To meet this requirement, the fast response trip signal input module directly transmits these emergency signals to the unified trip drive module. Through this design, the fast response trip signal can bypass the complex processing of the control module and quickly trigger the trip action, thus completing the trip within milliseconds to prevent the expansion of the fault and protect the circuit.

[0031] The unified trip drive module plays a core role in this circuit. It not only receives and processes the signals from the standard response trip signal input module and the fast response trip signal input module, but also decides to perform the corresponding trip action according to different signal types. The unified trip drive module decides whether to perform the delayed standard trip or the immediate response fast trip according to the received standard signal or fast signal. This design avoids the redundancy problem of requiring multiple independent hardware to separately process the standard and fast response signals, making the circuit more concise and efficient. In addition, the power output terminal of the unified trip drive module is directly connected to the trip coil, providing the necessary power to drive the trip coil to complete the circuit disconnection action, ensuring that the trip function can be realized under any circumstances.

[0032] Overall, by separately processing the input signals of the standard response and the fast response, and by executing the tripping action through a unified tripping drive module, the circuit can achieve a fast and accurate response to different fault conditions. Through the processing and judgment of the control module for the standard response signal, the system can be more flexible and reliable when dealing with ordinary faults. The fast response signal is directly transmitted to the unified tripping drive module, enabling the system to quickly disconnect the circuit in case of an emergency, prevent the spread of the fault, and protect the equipment from greater damage.

[0033] In summary, by separately inputting the standard response tripping signal and the fast response tripping signal, the standard response signal is transmitted to the control module through the standard signal input module, while the fast response signal is transmitted to the unified tripping drive module through the dedicated fast response tripping signal input module. This design avoids all signals passing through the microcontroller (MCU) for processing, thereby reducing the response delay. Especially in an emergency, the fast response signal can directly trigger the tripping action without going through complex calculation and judgment processes. In this way, the system can immediately respond when a fault occurs and meet the millisecond-level tripping requirement. Secondly, the unified tripping drive module can receive both the standard signal and the fast signal simultaneously to control the tripping coil to execute the tripping action, thus avoiding the need for independently designed hardware in traditional systems to achieve fast response and standard response. This change reduces hardware redundancy, simplifies the circuit design, and reduces the complexity and cost of the system. The power output terminal of the unified tripping drive module is connected to the tripping coil to ensure that the tripping action can be executed timely and reliably whether in the fast response or standard response mode, further improving the stability and reliability of the system. In addition, the classified processing of the tripping requirements ensures that the system can select the appropriate response method according to different fault types (such as short circuit or overload). This optimized control method helps to improve the overall fault protection effect.

[0034] Furthermore, as Figure 2 shown, the unified tripping drive module includes an isolation drive component U2, a debouncing component U4, a thyristor SCR1, and a polar capacitor D1. The first signal input terminal of the isolation drive component U2 is connected to the standard signal output terminal of the control module, the second signal input terminal of the isolation drive component U2 is connected to the fast signal output terminal of the fast response tripping signal input module, the signal output terminal of the isolation drive component U2 is connected to the signal input terminal of the debouncing component U4, the signal output terminal of the debouncing capacitor is connected to the controlled terminal of the thyristor SCR1, the first conducting terminal of the thyristor SCR1 is connected to the power supply, the second conducting terminal of the thyristor SCR1 is connected to the first end of the tripping coil, the second end of the tripping coil is connected to the negative extreme of the polar capacitor D1, and the common node between the first conducting terminal of the thyristor SCR1 and the power supply is connected to the positive extreme of the polar capacitor D1.

[0035] In this embodiment, the unified trip drive module ensures reliable execution of the trip action when receiving a standard trip signal or a fast-response trip signal through the cooperation of multiple key components. First, the first signal input terminal of the isolation drive element U2 is connected to the standard signal output terminal of the control module to receive the standard trip signal from the control module. The standard signal is transmitted through the first input terminal of the isolation drive element U2, enabling effective signal isolation to prevent high voltage or noise interference from entering the control module, thereby ensuring signal stability and accuracy. The second signal input terminal of the isolation drive element U2 is connected to the fast signal output terminal of the fast-response trip signal input module to directly receive the emergency trip signal from the fast-response signal input module. This design ensures that the fast-response signal can be transmitted quickly and bypass complex processing procedures to immediately enter the trip operation.

[0036] The signal output terminal of the isolation drive element U2 is connected to the signal input terminal of the debounce element U4. The function of the debounce element U4 is to filter out signal jitters caused by electrical noise or transient interference, ensuring that the signal transmitted to the subsequent circuit is clear and stable. This step is crucial in the control system, especially in an environment with high voltage or strong electromagnetic interference, as it effectively improves the robustness of the system and ensures the reliability of the trip signal.

[0037] The signal output terminal of the debounce capacitor is connected to the controlled terminal of the thyristor SCR1, which is responsible for controlling the flow of current. When the debounce signal is confirmed to be correct, the thyristor SCR1 is activated to conduct through its controlled terminal, enabling the power supply to directly supply the trip coil and complete the circuit disconnection action. The first conduction terminal of the thyristor SCR1 is connected to the power supply, and the second conduction terminal is connected to the first end of the trip coil, ensuring that after the trip signal is triggered, current can flow through the thyristor SCR1 to the trip coil, thereby initiating the trip process. The function of the thyristor SCR1 is to ensure the accurate execution of the trip signal. It will quickly conduct after receiving the debounce signal, complete the circuit closure, and drive the trip coil to perform the disconnection operation.

[0038] The polarized capacitor D1 serves as the power supply device for the trip coil. In an emergency, the trip coil needs to quickly obtain a large amount of current to complete the tripping operation. However, traditional technologies rely on external power supplies, which may lead to tripping failures in case of power fluctuations or shortages. To solve this problem, a capacitor energy storage device is designed in the system. The capacitor is pre-charged through a charging circuit to ensure that sufficient electrical energy can be provided in an emergency scenario. The common node between the polarized capacitor D1 and the power supply is connected and serves as the positive terminal of the energy storage device. This ensures that when the trip is triggered, the capacitor can quickly release energy and supply an instantaneous large current to the trip coil, thus ensuring the smooth progress of the tripping operation and avoiding tripping failures caused by insufficient power. Therefore, the main function of the polarized capacitor D1 is to provide an energy storage function. It maintains a charged state through the charging circuit, quickly releases energy when a fault occurs, and ensures the timely completion of the tripping operation, thereby improving the reliability and response speed of the system.

[0039] In summary, by including components such as an isolation drive element, a debouncing element, a thyristor, and a polarized capacitor in the unified trip drive module, it is possible to effectively avoid interference from signal noise when receiving a trip signal, ensure the stability and reliability of the signal, and thus improve the response accuracy of the system to faults; through the cooperation of the isolation drive element and the debouncing element, the risk of the system being affected by external electrical interference can be reduced, ensuring the stable operation of the system in a high-noise environment, and thus improving the safety of the system.

[0040] Furthermore, as Figure 2 shown, the fast-response trip signal input module includes terminal P13, terminal P14, and the trip monitoring element U3. Both terminal P13 and terminal P14 are connected to the second signal input terminal of the isolation drive element U2. The common node between terminal P13 and the second signal input terminal of the isolation drive element U2 is connected to the first input signal monitoring terminal of the trip monitoring element U3. The common node between terminal P14 and the second signal input terminal of the isolation drive element U2 is connected to the second input signal monitoring terminal of the trip monitoring element U3. The common node between the first conduction end of the thyristor SCR1 and the power supply is connected to the first output signal monitoring terminal of the trip monitoring element U3. The common node between the second conduction end of the thyristor SCR1 and the first end of the trip coil is connected to the second output signal monitoring terminal of the trip monitoring element U3. The monitoring signal output terminal of the trip monitoring element U3 is connected to the monitoring signal input terminal of the control module.

[0041] In this embodiment, the fast-response trip signal input module ensures that the trip action can be quickly triggered in an emergency through the cooperation of multiple key components. First, both terminal P13 and terminal P14 are connected to the second signal input terminal of the isolation drive element U2. These two terminals respectively receive the trip signals from the system, ensuring that when an emergency fault signal is received, it can be quickly transmitted to the subsequent circuit without being affected by electrical noise or interference, thus guaranteeing the clarity and effectiveness of the signal.

[0042] The common node between terminal P13 and the second signal input terminal of the isolation drive element U2 is connected to the first input signal monitoring terminal of the trip monitoring element U3, while the common node between terminal P14 and the second signal input terminal of the isolation drive element U2 is connected to the second input signal monitoring terminal of the trip monitoring element U3. Through this connection structure, the trip monitoring element U3 can monitor the input situation of the signal in real time, ensuring that when the trip signal appears, it can correctly monitor the state of the signal and determine whether the signal meets the trip conditions. This monitoring element U3 provides two monitoring input signals. By comparing and analyzing the state of the signals, it determines whether a trip operation needs to be executed, ensuring that the fault signal is identified in a timely and accurate manner.

[0043] The common node between the first conducting end of the thyristor SCR1 and the power supply is connected to the first output signal monitoring terminal of the trip monitoring element U3, and the common node between the second conducting end of the thyristor SCR1 and the first end of the trip coil is connected to the second output signal monitoring terminal of the trip monitoring element U3. These connections ensure that when the trip signal is triggered, the trip monitoring element U3 not only monitors the input of the signal but also can monitor the execution situation of the trip action in real time. Through this design, the trip monitoring element U3 can effectively track the state of the trip coil, ensuring the accurate execution of the trip operation.

[0044] Finally, the monitoring signal output terminal of the trip monitoring element U3 is connected to the monitoring signal input terminal of the control module, and it can feedback the trip execution status to the control module. The control module determines whether the trip action is successfully executed based on these feedback signals and decides whether to continue the operation or take other fault recovery measures according to the monitoring results, thereby ensuring the stability and reliability of the system.

[0045] Through this complete structure and control logic, the fast-response trip signal input module can achieve efficient and accurate trip operations, and through real-time monitoring and feedback, ensure that the system can quickly respond in an emergency and complete the trip action in a timely manner, avoiding the expansion of faults and protecting the safety of the circuit.

[0046] In summary, by connecting the trip monitoring element of the fast-response trip signal input module to the monitoring signal input end of the control module, the execution status of the trip signal can be monitored in real time, and the trip status can be fed back in a timely manner, thus ensuring the traceability and accuracy of each step in the fault handling process; by monitoring the trip action, corresponding decisions can be made whether the trip action is executed successfully or not, ensuring that the system can be quickly restored or fault checked, thereby improving the reliability and fault tolerance of the system.

[0047] Further, as Figure 2 shown, the standard-response trip signal input module includes terminal P1, terminal P2, and optocoupler Q1. Terminal P1 is connected to the positive terminal of the light-emitting diode part of optocoupler Q1, the negative terminal of the light-emitting diode part of optocoupler Q1 is connected to terminal P2, the first conduction end of the photosensitive triode part of optocoupler Q1 is connected to the power supply, and the second conduction end of the photosensitive triode part of optocoupler Q1 is connected to the standard signal input end of the control module.

[0048] In this embodiment, the standard-response trip signal input module can effectively receive and transmit the standard trip signal through its internal component design, ensuring that the system can perform the trip operation as required when encountering non-emergency faults. First, terminal P1 is connected to the positive terminal of the light-emitting diode part of optocoupler Q1, and terminal P2 is connected to the negative terminal of the light-emitting diode part of optocoupler Q1. The standard trip signal is transmitted through terminal P1 to the light-emitting diode part of optocoupler Q1, activating the photosensitive triode part inside the optocoupler. The main function of optocoupler Q1 is to isolate the input signal, which can effectively prevent high voltage and noise interference from entering the control circuit and ensure the safety and stability of the signal.

[0049] When the standard trip signal enters optocoupler Q1 through terminal P1, the light-emitting diode part is activated, generating an optical signal and driving the photosensitive triode part to work. The first conduction end of the photosensitive triode part of optocoupler Q1 is connected to the power supply, which means that under the drive of the optical signal, the photosensitive triode will connect the power supply circuit to provide the required current support. The second conduction end is connected to the standard signal input end of the control module, so that the photosensitive triode part of the optocoupler transmits the signal to the control module, ensuring that the signal is reliably transmitted from the input end to the control module.

[0050] After receiving the standard trip signal, the control module performs further signal processing and judgment. According to the fault situation and system settings, the control module decides whether to trigger the trip action. If a trip operation needs to be performed, the control module will send an instruction to the unified trip drive module to complete the subsequent trip execution. Through the signal isolation function of optocoupler Q1, the transmission process of the standard-response trip signal is safer and more anti-interference, avoiding adverse effects on the control system due to electrical noise or voltage fluctuations, and ensuring the stable operation of the system in non-emergency situations such as general overload.

[0051] Through this structural design, the standard response trip signal input module can transmit signals to the control module in a safe, stable and efficient manner when the system encounters ordinary faults, so as to ensure that the circuit breaker can disconnect the circuit under appropriate circumstances and avoid unnecessary damage.

[0052] Optionally, there are also multiple signal input ports on the control module, which are respectively used for the input of closing action signals, the input of reset state feedback signals and the input of circuit breaker state feedback signals. The structure and working principle of the input circuit are similar to those of the standard response trip signal input module, so they will not be elaborated here.

[0053] In summary, through the application of the optocoupler in the standard response trip signal input module, the electrical noise in the signal transmission process can be effectively isolated, avoiding interference from affecting the normal operation of the system, thereby improving the stability of signal transmission and the anti-interference ability of the system; by connecting the phototransistor part of the optocoupler to the control module, the reliable transmission of standard signals can be achieved, so as to ensure that the system can still make accurate trip decisions under non-emergency circumstances and ensure equipment safety.

[0054] Furthermore, as Figure 2 shown, a trip control circuit with separation of fast response and standard response further includes a reset control module and a closing control module. The reset control module includes a triode T1 and a reset coil C3, and the closing control module includes a triode T2 and a closing coil C2 for the reset detection of the control module; The first end of the reset coil C3 is connected to the power output end of the control module, the second end of the reset coil C3 is connected to the first conduction end of the triode T1, the second conduction end of the triode T1 is grounded, and the controlled end of the triode T1 is connected to the reset drive signal output end of the control module; The first end of the closing coil C2 is connected to the power output end of the control module, the second end of the closing coil C2 is connected to the first conduction end of the triode T2, the second conduction end of the triode T2 is grounded, and the controlled end of the triode T2 is connected to the closing drive signal output end of the control module.

[0055] In this embodiment, the reset control module and the closing control module in this fast response and standard response separation trip control circuit are respectively responsible for the reset and closing operations of the control system to ensure that the circuit breaker can return to the normal state or re-close the circuit after tripping.

[0056] First, the reset control module includes a triode T1 and a reset coil C3. The first end of the reset coil C3 is connected to the power output terminal of the control module, which means that the reset coil will obtain necessary power support from the control module. The second end of the reset coil C3 is connected to the first conduction end of the triode T1, forming a current path for the reset operation. When the control module detects that a reset operation is required, the triode T1 will be activated. The second conduction end of the triode T1 is grounded, ensuring that the reset current can flow to the ground terminal and complete the circuit closure, starting the reset process. At the same time, the controlled end of the triode T1 is connected to the reset drive signal output terminal of the control module, and the control module controls the transmission of the reset signal through this connection to ensure the execution of the reset operation.

[0057] When the reset coil C3 is activated, the reset control module will drive the reset action, restoring the state before the trip and ensuring that the system can re-enter the normal operation mode. The function of the reset control module is to control the transmission and execution of the reset signal through the cooperation of the triode T1 and the reset coil C3, thereby realizing the automatic reset operation of the circuit breaker.

[0058] The closing control module includes a triode T2 and a closing coil C2. The first end of the closing coil C2 is connected to the power output terminal of the control module, providing the power required for the closing operation. The second end of the closing coil C2 is connected to the first conduction end of the triode T2. After the triode T2 is activated, it allows current to pass through the closing coil C2, causing the switch of the circuit breaker to close again. The second conduction end of the triode T2 is grounded, ensuring the integrity of the current path and the execution of the closing action. The controlled end of the triode T2 is connected to the closing drive signal output terminal of the control module, and the control module sends a closing signal through this connection to trigger the closing action.

[0059] When the control module detects that a closing operation is required, it controls the conduction of the triode T2 through the closing drive signal, allowing current to pass through the closing coil C2 and driving the circuit breaker to close again. This process ensures that the system can restore power supply after a trip, ensuring that the circuit can be reconnected and resume normal operation.

[0060] The reset control module and the closing control module jointly ensure that the system can be restored to the normal state through automatic operations after a fault. Whether it is the reset after the circuit is disconnected or the closing after the fault is eliminated, both can be controlled through the cooperation of these two modules, reducing manual intervention and improving the stability and reliability of the system.

[0061] In summary, through the design of the reset control module and the closing control module, the reset and closing operations of the circuit breaker can be achieved after tripping, ensuring that the system can quickly resume normal operation after troubleshooting, thereby improving the automation level and recovery ability of the system; through the linkage of the control module with the reset and closing coils, the reset and closing operations can be accurately controlled, avoiding manual intervention, reducing operation errors, and improving the reliability of the system.

[0062] Further, as Figure 2 shown, a tripping control circuit with separation of fast response and standard response further includes a clamping protection module, and the clamping protection module includes a protection unit, diode D1, diode D2, diode D3, and diode D4; The common node between the second end of the reset coil C3 and the first conducting end of the triode T1 is connected to the positive electrode end of the diode D1, the negative electrode end of the diode D1 is connected to the first signal input end of the protection unit, the diode D2 is arranged in parallel with the triode T1, and the current direction of the diode D2 is opposite to the current direction of the triode T1; The common node between the second end of the closing coil C2 and the first conducting end of the triode T2 is connected to the positive electrode end of the diode D3, the negative electrode end of the diode D3 is connected to the second signal input end of the protection unit, the diode D4 is arranged in parallel with the triode T1, and the current direction of the diode D4 is opposite to the current direction of the triode T2.

[0063] In this embodiment, the function of the clamping protection module in this tripping control circuit with separation of fast response and standard response is to prevent damage to the system caused by overvoltage or overcurrent by limiting voltage or current fluctuations. The key components in the module include a protection unit, diode D1, diode D2, diode D3, and diode D4. These diodes cooperate with the triodes T1 and T2 to provide necessary voltage protection during the tripping and closing processes.

[0064] The positive electrode end of the diode D1 is connected to the common node between the second end of the reset coil C3 and the first conducting end of the triode T1. When the voltage between the second end of the reset coil C3 and the first conducting end of the triode T1 changes, the diode D1 plays a role in clamping protection, limiting the possibly excessive voltage within a safe range to prevent damage to other components of the system caused by overvoltage. The negative electrode end of the diode D1 is connected to the first signal input end of the protection unit, and the protection unit determines whether to initiate further protection measures based on the signal input of the diode D1, thereby ensuring electrical safety during the reset process.

[0065] The diode D2 is connected in parallel with the triode T1, and the current direction of the diode D2 is opposite to that of the triode T1. The function of the diode D2 is to prevent the reverse flow of the current generated when the triode T1 conducts, ensuring that the current flows along the predetermined path. If a reverse current appears during the reset process, the diode D2 will direct this current to a safe position, preventing it from affecting the triode T1 or other circuit components, and providing additional protection for the circuit.

[0066] The positive terminal of the diode D3 is connected to the common node between the second end of the closing coil C2 and the first conducting end of the triode T2, and the negative terminal of the diode D3 is connected to the second signal input terminal of the protection unit. When the voltage of the closing coil C2 fluctuates, the diode D3 will play a similar clamping role to ensure that the closing process will not be affected by abnormal voltage. The diode D3 provides voltage limitation during the closing process, ensuring electrical safety during closing, and at the same time transmitting signals to the protection unit to monitor the circuit state.

[0067] The diode D4 is connected in parallel with the triode T2, and the current direction of the diode D4 is opposite to that of the triode T2. The function of the diode D4 is similar to that of the diode D2. During the closing process, it provides protection against reverse current. When the triode T2 conducts during the closing process, if a reverse current appears, the diode D4 will direct it to a safe path, preventing damage to the triode T2 or other circuit components, and ensuring the reliability and safety of the closing operation.

[0068] The design of the entire clamping protection module ensures that during the reset and closing operations, the voltage and current always remain within a safe range, preventing electrical damage or operating failures. Each diode plays a role in limiting the current or voltage at a specific moment, thereby providing necessary protection for the circuit, ensuring stable operation even in case of faults, and enhancing the reliability and durability of the system.

[0069] In summary, through the design of the clamping protection module, additional protection can be provided during the reset and closing processes to prevent damage caused by excessive current or abnormal voltage, enhancing the protection ability of the system; through the cooperation of the diode and the triode, the fluctuations of the current and voltage can be effectively limited, ensuring that the system is not affected by electrical shocks during the reset and closing processes, thereby improving the stability and safety of the system.

[0070] As Figure 3 shown, a tripping control method for separating fast response from standard response is applied to a tripping control circuit for separating fast response from standard response. A tripping control method for separating fast response from standard response includes: S10. Obtain system status data, and determine whether to enter the preparation state for performing the tripping action according to the system status data; In this embodiment, the control module determines whether to perform a tripping action by continuously collecting various real-time status data. The data acquisition unit monitors electrical parameters such as current, voltage, and temperature in real time. At the same time, the system obtains other key data through sensors or status monitoring devices, such as the current value and voltage value in the circuit, or the operating temperature of the device. These data are transmitted to the control module through the data acquisition module, and the latter quickly processes and analyzes these data to determine whether the current state has reached the tripping condition, such as whether the current exceeds the set safety threshold, or whether the voltage fluctuates abnormally. If the judgment condition is met, the system enters the ready-to-trip state. At this time, the control module will enter a preparatory state to prepare for the next tripping operation to prevent further damage to the system due to overload or failure.

[0071] S20. If it is necessary to enter the ready state for performing the tripping action, then determine whether a fast tripping request is detected. If a fast tripping request is detected, perform the tripping action of the tripping coil through the unified tripping drive module, and / or set the corresponding fault state. In this embodiment, once the control module determines that the system is in the ready-to-trip state, it will first check whether a fast tripping request is received. The fast tripping request usually comes from emergency fault events, such as short circuits or short-term overloads of electrical equipment. These events require the system to respond quickly to disconnect the circuit in the shortest time to avoid greater damage. If the system detects a fast tripping request, the control module will quickly drive the tripping coil through the unified tripping drive module to complete the tripping operation, thereby immediately cutting off the circuit to avoid further expansion of equipment damage or circuit faults. At the same time, if the fault is serious, the control module can also determine whether it is necessary to enter the fault state for fault diagnosis and recovery operations after tripping to ensure system stability.

[0072] S30. If no fast tripping request is detected, then determine whether a standard tripping request is detected. If a standard tripping request is detected, perform tripping logic judgment through the control module to determine whether to send a tripping signal to the unified tripping drive module, and then perform the tripping action of the tripping coil, and / or determine whether to set the corresponding fault state. In this embodiment, if no fast tripping request is detected, the control module will continue to determine whether a standard tripping request is received. The standard tripping request usually comes from load overload, preset limits of electrical equipment, or operation errors, etc., and the tripping requirement is relatively less urgent. After receiving the standard tripping request, the control module will execute the tripping logic judgment. First, it will check whether the tripping conditions are met, such as whether the current exceeds the set load threshold, or whether the equipment fails due to long-term operation. If the tripping conditions are met, the control module will send a tripping signal to the unified tripping drive module to drive the tripping coil to complete the tripping action and disconnect the circuit; if there are faults that cannot be immediately judged or resolved, the system will enter the fault state and wait for maintenance or further operations. In addition, the control module will also determine whether it is necessary to update the system state to the fault mode so that maintenance personnel can understand the location and severity of the fault.

[0073] S40. If no standard tripping request is detected, then determine whether a closing request is detected. If a closing request is detected, perform closing logic judgment through the control module to determine whether to send a closing signal to the closing drive module, and then execute the closing action of the closing coil, and / or determine whether to set the corresponding fault state; In this embodiment, if neither a fast tripping request nor a standard tripping request exists, the system will check whether a closing request is received. The closing request usually occurs after the circuit trips and the user or operator hopes to restore power supply. The control module will judge whether the closing conditions are met based on the closing logic. The prerequisite for closing is that the circuit has returned to normal and the current and voltage have returned to the safe range. If the conditions are met, the control module will send a closing signal through the closing drive module to drive the closing coil to close and restore the circuit. If the closing conditions are not met, or the system detects other potential faults, the control module will decide whether to enter the fault state to prevent incorrect closing operations and avoid secondary damage to the equipment.

[0074] S50. If no closing request is detected, output the corresponding fault handling instruction or display communication instruction according to the fault state.

[0075] In this embodiment, if the system does not detect a fast tripping request, a standard tripping request, or a closing request, and the circuit has not returned to normal, the control module will output fault handling instructions according to the fault state. These instructions can be local alarms, indicator light flashes, sound alarms, etc., to warn the operator that there is a problem with the system. In addition, the system will also generate display communication instructions to transmit the current fault state and fault information to the remote monitoring system or equipment management center through the display screen or communication interface. These information include the fault location, fault type, time of fault occurrence, etc., to help maintenance personnel understand the fault situation in a timely manner, perform remote diagnosis or arrange on-site maintenance, thereby improving the fault handling efficiency and reducing the downtime.

[0076] In summary, by obtaining system status data and determining whether to enter the preparation state for executing a tripping operation, it is possible to collect data in real time before a system fault and make decisions, thereby improving the timeliness of fault response; by determining whether a fast tripping request is detected, it is possible to prioritize the handling of emergency faults and ensure that the circuit is cut off within the shortest time, thereby enhancing the system's fault handling ability; by determining whether a standard tripping request is detected and performing logical judgment, it is possible to make reasonable judgments in non-emergency situations, ensure the stable operation of the system, avoid unnecessary tripping operations, and thereby improve the reliability and operating efficiency of the system.

[0077] In one embodiment, as Figure 4 shown, in step S20, that is, if a fast tripping request is detected, then the tripping operation of the tripping coil is executed through the unified tripping drive module, and / or in the step of setting the corresponding fault state, the fault state includes a system fault state and a reset fault state, the step further includes: S201. If a fast tripping request is detected, then the tripping operation of the tripping coil is executed through the unified tripping drive module, and it is determined whether the tripping operation is successfully executed. If the tripping operation is not successfully executed, then the system fault state is set; in this embodiment, when the control module receives a fast tripping request, it will first immediately trigger the unified tripping drive module, and the unified tripping drive module cuts off the circuit quickly by controlling the current of the tripping coil to isolate the faulty part. At this time, the control module will monitor the current change of the tripping coil in real time to detect whether the tripping operation is successful. If the current of the tripping coil conforms to the set normal disconnection current range and the circuit is successfully disconnected, it means that the tripping operation is successfully executed, and the control module will update the system state to the system fault state according to this result. This state indicates that a fault has occurred and the system needs further processing and recovery. At this time, the fault information will be recorded and transmitted to the operator or the remote monitoring center through the display screen, the alarm system or the communication module to ensure timely fault diagnosis and repair. If the tripping operation fails to be completed successfully, the system will perform the next operation to attempt to restore the circuit and handle the fault.

[0078] S202. If the trip operation is successfully executed, perform a reset operation and determine whether the reset operation is successful. If the reset operation is successful, it is determined that the trip operation is completed. In this embodiment, if the trip operation fails to be executed successfully, the control module will immediately perform a reset operation, aiming to attempt to restore the circuit state before the trip or switch the device state, so as to make a re-attempt. When performing the reset operation, the control module first sends a reset signal through the reset control module to control the reset coil to return to the preset initial position, which may include reconnecting some devices in the circuit or closing the switches in the circuit. Whether the reset operation is successful is confirmed by monitoring the feedback of the reset signal. If the reset operation is successful, the control module will check the circuit state again to ensure that the trip coil has returned to the normal operating state and complete the circuit cut-off operation. At this time, the control module will determine whether the trip operation has been finally completed, and update the system state to the normal state after confirming success, marking that the trip operation has been successfully ended.

[0079] S203. If the reset operation fails to be executed successfully, set the reset fault state. In this embodiment, if the reset operation fails to be executed successfully, the control module will set the system to the reset fault state when the circuit cannot be restored to normal or a fault occurs during the reset process. This state indicates that the system cannot successfully restore the circuit or cannot perform the trip operation normally. At this time, the control module will feedback detailed fault information to the operator through the alarm system, display screen or communication interface to help quickly locate the cause of the fault. After the reset fault state is triggered, the system stops further operations to prevent more potential damage or errors to the circuit. The operator needs to perform a manual inspection and repair of the circuit until the reset operation can be successfully completed.

[0080] In summary, through the detection of the fast trip request and the judgment of the successful execution of the trip operation, it can ensure that the trip operation can be successfully executed in an emergency, thereby improving the reliability of fault protection; by judging whether the reset operation is successful, it can ensure that the system function can be restored through reset in case of trip failure, thereby enhancing the fault tolerance of the system; by setting the reset fault state when the reset operation fails, it can timely feedback the fault information and prevent the system from continuing to operate, ensuring safety.

[0081] In one embodiment, as Figure 5 shown, in step S30, that is, if a standard trip request is detected, the trip logic judgment is performed through the control module to determine whether to send a signal to the unified trip drive module, and then perform the trip operation of the trip coil, and / or determine whether to set the corresponding fault state. The trip logic judgment includes judging whether the first supply voltage reaches the first preset voltage, judging whether the unified trip drive module is in the closing state, and judging whether the first delay condition predetermined for the trip operation is completed. The fault state includes the trip condition fault state. The steps include: S301. If a standard trip request is detected, the control module obtains the first supply voltage of the trip operation power supply, and determines whether the supply voltage reaches the first preset voltage. If it does not reach the first preset voltage, the trip condition fault state is set. In this embodiment, the control module first obtains the first supply voltage of the power required for the trip operation from the power monitoring unit. This voltage is a necessary condition for triggering the trip operation. The control module will detect the obtained voltage in real time. If the voltage value is lower than the set first preset voltage (for example, the set value is 24V), it indicates that the power supply voltage is not sufficient to stably support the trip operation, which may cause mistakes during the trip or fail to disconnect the circuit normally. To prevent unsafe trip operations, the control module updates the system state to the trip condition fault state and notifies the operator through the alarm system or display screen that the power supply voltage does not meet the requirements and the trip operation cannot be continued. This can avoid the risk of equipment damage or ineffective circuit disconnection due to insufficient voltage, and ensure the stability and safety of the system.

[0082] S302. If the first preset voltage is reached, the control module determines whether the unified trip drive module is in the closing state. If it is not in the closing state, the system state data is re-obtained, and it is determined whether to enter the preparation state for executing the trip operation according to the system state data. In this embodiment, if the power supply voltage meets the preset requirements, the control module will further determine the state of the unified trip drive module, especially whether it is in the closing state. The closing state means that the circuit is currently closed, and a trip operation is required to cut off the current. Therefore, the control module will detect whether the unified trip drive module is already in the closing state. If it is detected that the module is not in the closing state, it may mean that the circuit is already in the open state or there are other abnormalities, and the current system state needs to be re-evaluated. At this time, the control module will re-obtain and analyze the system state data (such as current, voltage, load, etc.), and determine whether the system has returned to a state where it can be prepared for a trip according to the new data. If the state returns to normal, the system will enter the trip preparation state and continue the subsequent judgment and operation process. The purpose of this step is to ensure that the trip operation is triggered only when the closing condition is met, and to avoid invalid trip signals.

[0083] S303. If it is in the closing state, determine whether the first delay condition pre-determined for the tripping operation is completed. If not, re-obtain the system status data and determine whether to enter the preparation state for executing the tripping operation according to the system status data. In this embodiment, when the control module detects that the unified tripping drive module is in the closing state, the control module will continue to determine whether the tripping operation can be executed. The key to this determination is whether the system meets the preset first delay condition. For example, the tripping operation may need to be executed after the current fluctuation is stable and the equipment is fully prepared. If the delay condition has not been completed (for example, the current is not stable or the equipment has not completed self-checking), the control module will re-obtain the latest system status data and check whether the delay condition has been met. If the delay condition is not completed, the system will continue to wait until all necessary conditions are met to ensure that the tripping operation can be executed safely and reliably. If the delay condition is completed, the system will continue with the tripping process and perform the next operation. This step ensures that the tripping operation will not be triggered at an inappropriate time, thereby increasing the reliability and safety of the system.

[0084] S304. If it has been completed, send a tripping signal to the unified tripping drive module, and then execute the tripping action of the tripping coil. In this embodiment, if all the preconditions for the tripping operation are met (including qualified voltage, confirmation of the closing state, and completion of the delay condition), the control module will send a tripping signal to the unified tripping drive module. This signal will activate the unified tripping drive module, and then control the tripping coil to execute the tripping action to quickly disconnect the circuit. After receiving the signal, the tripping coil will quickly cut off the circuit through electromagnetic action to prevent the expansion of the fault and protect the safety of the system and electrical equipment. During this process, the control module will continuously monitor the tripping process to ensure that the tripping coil can fully execute the tripping task, the circuit is effectively cut off, and ultimately the purpose of circuit protection is achieved. This step ensures that the system executes the tripping action within the correct time window and minimizes the impact of the fault on the system.

[0085] In summary, by determining whether the supply voltage reaches the preset voltage and executing the tripping action based on this determination, it can ensure that the tripping action is executed when the power supply is sufficient, avoiding operation failures caused by insufficient power, thereby enhancing the reliability of the system; by determining whether the unified tripping drive module is in the closing state, it can effectively control the tripping timing and avoid misoperations caused by unsuitable system states, thereby improving the accuracy of the tripping decision.

[0086] In one embodiment, as Figure 6As shown, in step S40, that is, if a closing request is detected, the closing logic is judged by the control module to determine whether to send a closing signal to the closing drive module, and then the closing operation of the closing coil is performed, and / or to determine whether to set the corresponding fault state. The closing logic judgment includes judging whether the second supply voltage reaches the second preset voltage, judging whether the unified trip drive module is in the trip state, and judging whether the second delay condition pre-determined for the closing operation is completed. The fault state includes the closing condition fault state. The steps include: S401. If a closing request is detected, the control module obtains the second supply voltage of the closing operation power supply, and judges whether the second supply voltage reaches the second preset voltage. If the second supply voltage does not reach the second preset voltage, the closing condition fault state is set. In this embodiment, when the control module detects a closing request, it first obtains the second supply voltage for the closing operation from the power supply monitoring unit, which is usually the voltage used to drive the closing coil. The control module monitors this voltage in real time and judges whether it reaches the second preset voltage, that is, the minimum voltage required for the closing operation. If the second supply voltage is lower than the preset value (for example, the set value is 24V), it indicates that the power supply voltage is insufficient and may not be able to drive the closing coil normally, resulting in a failed closing. In this case, the control module updates the system state to the closing condition fault state and prompts the operator through an alarm or display message that the power supply is insufficient and the closing operation cannot be performed. In this way, the system avoids performing a closing operation under unstable power supply conditions and prevents equipment damage or circuit instability caused by insufficient voltage.

[0087] S402. If the second preset voltage is reached, the control module judges whether the unified trip drive module is in the trip state. If it is not in the trip state, the system state data is obtained again, and it is judged whether to enter the preparation state for performing the trip operation according to the system state data. In this embodiment, if the second supply voltage has reached the preset value, the control module will further judge the state of the unified trip drive module. The trip state of the unified trip drive module means that the circuit is in the open state. If the system is already in the trip state, the closing operation should not be performed. Therefore, the control module first checks whether the unified trip drive module has entered the trip state. If the unified trip drive module is not in the trip state, it means that the current circuit is in the normal state or has returned to the closing state. The control module will judge whether the current system is ready to enter the state of performing the trip by obtaining the latest system state data. If the system is not ready to perform the trip, the control module will decide whether to enter the preparation state according to the current state data such as current and temperature to ensure that the closing operation is only performed when the system state is safe. This step ensures that the closing operation is only performed at an appropriate time, avoiding misoperation or circuit problems.

[0088] S403. If it is in the tripped state, then determine whether the second delay condition pre-determined for the closing operation is completed. If it is not completed, re-obtain the system status data and determine whether to enter the preparation state for executing the tripping operation according to the system status data. In this embodiment, when the control module confirms that the unified tripping drive module is in the tripped state, it indicates that the circuit has been disconnected. It is necessary to wait for a certain period of time to ensure the stability of the tripping operation and avoid equipment damage or circuit instability caused by immediate closing. At this time, the control module will determine whether the delay condition is completed according to the preset second delay condition (for example, conditions such as the current is completely disconnected or the fault is cleared). If the delay condition is not completed, the control module will re-obtain the system status data, analyze information such as current, temperature, and equipment status, and determine whether to enter the state of preparing for the tripping operation. If the delay condition is not met, the system will continue to wait until the tripping operation is stable to ensure the safety of closing.

[0089] S404. If it has been completed, send a closing signal to the closing drive module, and then execute the closing operation of the closing coil. In this embodiment, once it is determined that the delay condition has been completed and all closing conditions are met, the control module will send a closing signal to the unified tripping drive module to start the closing operation. The closing signal will control the closing coil through the unified tripping drive module to execute the closing operation of the circuit and restore the connection of the circuit. After receiving the closing signal, the tripping coil will drive the circuit to close again and restore the power supply. After the closing operation is completed, the control module will monitor whether the closing state is stable and update the system status to the normal working state. If the closing operation is successful, the system will restore the circuit connection again to ensure the normal operation of the equipment. In this way, the system can perform the closing operation under the condition of ensuring the stability and faultlessness of the circuit, thereby improving the reliability and safety of the system.

[0090] In summary, by judging whether the closing request and the supply voltage meet the closing conditions, it is possible to ensure that the closing operation is executed under appropriate power supply conditions, avoid closing failure caused by insufficient power supply or abnormal system status, and thus improve the stability of the system; by judging whether the delay condition of the closing operation is completed, it is possible to accurately control the closing timing and ensure the safety and reliability of the system restoration operation.

[0091] The basic working principle of the present invention is as follows: The same drive circuit and coil are used in the paths for transmitting fast signals and standard signals, that is, the unified tripping drive module and the tripping coil. After tripping, it will immediately drive the reset coil to act through the reset drive circuit to prepare for the closing state, and the closing operation has its own drive circuit and coil. In addition, except that the fast tripping does not need to be judged by the control module, the standard tripping, resetting, and closing all need to be judged by the control module. However, although the fast signal corresponding to the fast tripping operation does not pass through the control module for judgment, it will tell the control module that the signal has been sent, and the control module will check whether the execution is successful based on this.

[0092] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A trip control circuit with separated fast response and standard response, characterized in that: The tripping control circuit with separated quick response and standard response includes a control module, a unified tripping drive module, a standard response tripping signal input module, a quick response tripping signal input module and a tripping coil, wherein the standard signal output end of the standard response tripping signal input module is connected to the standard signal input end of the control module, the standard signal output end of the control module is connected to the standard signal input end of the unified tripping drive module, the quick signal output end of the quick response tripping signal input module is connected to the quick signal input end of the unified tripping drive module, the power output end of the unified tripping drive module is connected to the tripping coil, and the unified tripping drive module is used to receive standard signals and quick signals, and execute the tripping action of the tripping coil according to the tripping requirements corresponding to the standard signal or the quick signal.

2. A trip control circuit with separated fast response and standard response according to claim 1, characterized in that: The unified tripping drive module includes an isolation drive element U2, a de-jitter element U4, a thyristor SCR1 and a polarity capacitor D1. The first signal input end of the isolation drive element U2 is connected to the standard signal output end of the control module, the second signal input end of the isolation drive element U2 is connected to the fast signal output end of the fast response tripping signal input module, the signal output end of the isolation drive element U2 is connected to the signal input end of the de-jitter element U4, the signal output end of the de-jitter capacitor is connected to the controlled end of the thyristor SCR1, the first conduction end of the thyristor SCR1 is connected to a power supply, the second conduction end of the thyristor SCR1 is connected to the first end of the tripping coil, the second end of the tripping coil is connected to the negative end of the polarity capacitor D1, and the common node between the first conduction end of the thyristor SCR1 and the power supply is connected to the positive end of the polarity capacitor D1.

3. A trip control circuit with separated fast response and standard response according to claim 2, characterized in that: The fast response trip signal input module includes a terminal P13, a terminal P14 and a trip monitoring element U3, the terminal P13 and the terminal P14 are both connected to the second signal input end of the isolation drive element U2, the common node between the terminal P13 and the second signal input end of the isolation drive element U2 is connected to the first input signal monitoring end of the trip monitoring element U3, the common node between the terminal P14 and the second signal input end of the isolation drive element U2 is connected to the second input signal monitoring end of the trip monitoring element U3, the common node between the first conduction end of the thyristor SCR1 and the power supply is connected to the first output signal monitoring end of the trip monitoring element U3, the common node between the second conduction end of the thyristor SCR1 and the first end of the trip coil is connected to the second output signal monitoring end of the trip monitoring element U3, and the monitoring signal output end of the trip monitoring element U3 is connected to the monitoring signal input end of the control module.

4. A trip control circuit with separated fast response and standard response according to claim 1, characterized in that: The standard response trip signal input module includes a terminal P1, a terminal P2 and an optocoupler Q1, the terminal P1 is connected to the positive end of the light-emitting diode part of the optocoupler Q1, the negative end of the light-emitting diode part of the optocoupler Q1 is connected to the terminal P2, the first conduction end of the phototransistor part of the optocoupler Q1 is connected to a power supply, and the second conduction end of the phototransistor part of the optocoupler Q1 is connected to the standard signal input end of the control module.

5. A trip control circuit with separated fast response and standard response according to claim 1, characterized in that: The trip control circuit with separated fast response and standard response further includes a reset control module and a closing control module, wherein the reset control module includes a transistor T1 and a reset coil C3, the closing control module includes a transistor T2 and a closing coil C2, and a reset detection of the control module; The first end of the reset coil C3 is connected to the power output end of the control module, the second end of the reset coil C3 is connected to the first conduction end of the transistor T1, the second conduction end of the transistor T1 is grounded, and the controlled end of the transistor T1 is connected to the reset drive signal output end of the control module; The first end of the closing coil C2 is connected to the power output end of the control module, the second end of the closing coil C2 is connected to the first conduction end of the transistor T2, the second conduction end of the transistor T2 is grounded, and the controlled end of the transistor T2 is connected to the closing drive signal output end of the control module.

6. A trip control circuit with separated fast response and standard response according to claim 5, characterized in that: The trip control circuit with separated fast response and standard response further includes a clamp protection module, and the clamp protection module includes a protection unit, a diode D1, a diode D2, a diode D3 and a diode D4; A common node between the second end of the reset coil C3 and the first conduction end of the transistor T1 is connected to the positive end of the diode D1, the negative end of the diode D1 is connected to the first signal input end of the protection unit, the diode D2 is arranged in parallel with the transistor T1, and the current direction of the diode D2 is opposite to the current direction of the transistor T1; A common node between the second end of the closing coil C2 and the first conduction end of the transistor T2 is connected to the positive end of the diode D3, the negative end of the diode D3 is connected to the second signal input end of the protection unit, the diode D4 is arranged in parallel with the transistor T1, and the current direction of the diode D4 is opposite to the current direction of the transistor T2.

7. A trip control method with separation of fast response and standard response, characterized in that: Applied to a trip control circuit with separated fast response and standard response as claimed in any one of claims 1 to 6, the trip control method with separated fast response and standard response comprises: Acquiring system status data, and determining whether to enter a ready state for executing a tripping action according to the system status data; If it is necessary to enter the preparation state for executing the tripping action, it is determined whether a fast tripping request is detected. If a fast tripping request is detected, the tripping action of the tripping coil is executed through the unified tripping drive module, and / or the corresponding fault state is placed; If no fast trip request is detected, it is determined whether a standard trip request is detected. If a standard trip request is detected, a trip logic judgment is performed by the control module to determine whether to send a trip signal to the unified trip drive module, thereby executing a tripping action of the trip coil, and / or determining whether to enter a corresponding fault state; If the standard trip request is not detected, it is determined whether a closing request is detected. If a closing request is detected, a closing logic judgment is performed by the control module to determine whether to send a closing signal to the closing drive module, thereby executing the closing action of the closing coil, and / or determining whether to enter a corresponding fault state; If no closing request is detected, a corresponding fault handling instruction is output or a communication instruction is displayed according to the fault state.

8. A trip control method with separation of fast response and standard response according to claim 7, characterized in that: If a fast trip request is detected, the unified trip drive module is used to perform a tripping action of the trip coil, and / or a corresponding fault state is set, wherein the fault state includes a system fault state and a reset fault state, and the step further includes: If a fast trip request is detected, the unified trip drive module executes the trip action of the trip coil, and determines whether the trip action is successfully executed. If the trip action is not successfully executed, the system is placed in a fault state; If the tripping action is successfully executed, a reset action is executed, and it is determined whether the reset action is successfully executed. If the reset action is successfully executed, it is determined that the tripping action is completed. If the reset action is not successfully executed, a reset fault state is entered.

9. A trip control method with separation of fast response and standard response according to claim 7, characterized in that: If a standard trip request is detected, a trip logic judgment is performed by the control module to determine whether to send a signal to the unified trip drive module, thereby executing the trip action of the trip coil, and / or determining whether to place the corresponding fault state. The trip logic judgment includes judging whether the first power supply voltage reaches the first preset voltage, judging whether the unified trip drive module is in the closed state, and judging whether the first delay condition predetermined by the trip action is completed. The fault state includes a trip condition fault state. The steps include: If a standard trip request is detected, a first power supply voltage of a tripping action power supply is obtained through a control module, and it is determined whether the power supply voltage reaches a first preset voltage. If the first preset voltage is not reached, a trip condition fault state is set; If the first preset voltage is reached, the control module determines whether the unified tripping drive module is in a closed state. If it is not in a closed state, the system status data is acquired again, and it is determined whether to enter a ready state for executing a tripping action according to the system status data; If it is in the closed state, determine whether the first delay condition predetermined for the tripping action is completed; if not, reacquire the system state data, and determine whether to enter the preparation state for executing the tripping action according to the system state data; If it has been completed, a trip signal is sent to the unified trip drive module, thereby executing the trip action of the trip coil.

10. A trip control method with separation of fast response and standard response according to claim 7, characterized in that: If a closing request is detected, a closing logic judgment is performed through the control module to determine whether to send a closing signal to the closing drive module, thereby executing the closing action of the closing coil, and / or determining whether to place the corresponding fault state. The closing logic judgment includes judging whether the second power supply voltage reaches the second preset voltage, judging whether the unified tripping drive module is in the tripping state, and judging whether the second delay condition predetermined by the closing action is completed. The fault state includes a closing condition fault state. The steps include: If a closing trip request is detected, the second power supply voltage of the closing action power supply is obtained through the control module, and it is determined whether the second power supply voltage reaches a second preset voltage. If it does not reach the second preset voltage, the closing condition fault state is set; If the second preset voltage is reached, the control module determines whether the unified tripping drive module is in a tripping state. If it is not in a tripping state, the system status data is acquired again, and it is determined whether to enter a preparation state for executing a tripping action according to the system status data; If it is in the tripping state, determine whether the second delay condition predetermined for the closing action is completed; if not, reacquire the system status data, and determine whether to enter the preparation state for executing the tripping action according to the system status data; If it has been completed, a closing signal is sent to the closing drive module, thereby executing the closing action of the closing coil.

Images