Method and device for protection threshold setting, circuit breaker and storage medium

Abstract

The embodiment of the invention provides a protection threshold setting method and device, a circuit breaker and a storage medium. According to the embodiment of the invention, the connection state between the plug piece and the release is determined and identified based on the detection voltage; setting a protection threshold voltage based on an output voltage of a digital-to-analog converter in response to a failure of the connection between the identification plug and the release; and setting the protection threshold voltage based at least on a contact state of the release and one of: the output voltage of the digital-to-analog converter, or the output voltage of the identification plug in response to the connection between the identification plug and the release having no failure. In this way, loss of power supply continuity caused by false tripping of the circuit breaker can be avoided.

Description

Technical Field

[0001] Example embodiments of the present disclosure generally relate to the field of electrical equipment, and more particularly, to a method, an apparatus, a circuit breaker, and a computer-readable storage medium for protection threshold setting. Background Art

[0002] Circuit breakers are widely used in various power, distribution and electricity consumption scenarios. When a circuit is overloaded or short-circuited, the circuit breaker can disconnect the circuit to provide protection. The integrated instantaneous protection (DIN / DINF) of the air circuit breaker is set by the identification plug (also known as the identification strip, Performer Plug). The circuit breaker's trip unit generates the DIN / DINF protection threshold based on the voltage division of the resistance on the performer plug and the internal resistance of the trip unit. The connection between the performer plug and the trip unit is made up of a board connector.

[0003] However, in actual use, especially in harsh environments such as offshore wind power, poor contact between the Performer Plug and the release often occurs. Once poor contact occurs, the circuit breaker will immediately trip DIN / DINF, resulting in false tripping and subsequent disruption of power supply continuity. Summary of the invention

[0004] Embodiments of the present disclosure provide a method, an apparatus, a circuit breaker, and a computer-readable storage medium for setting a protection threshold.

[0005] In a first aspect of the present disclosure, a method for setting a protection threshold is provided. In the method, a connection state between an identification plug and a trip unit is determined based on a detection voltage; in response to a connection failure between the identification plug and the trip unit, a protection threshold voltage is set based on an output voltage of a digital-to-analog converter; and in response to no connection failure between the identification plug and the trip unit, the protection threshold voltage is set based on at least a contact state of the trip unit and one of the following: the output voltage of the digital-to-analog converter, or the output voltage of the identification plug.

[0006] In some embodiments of the first aspect, the detection voltage is a voltage between the identification plug and a first reference voltage connected to the identification plug, and determining the connection state includes: in response to determining that the detection voltage reaches or exceeds the first reference voltage, determining that a fault occurs in the connection between the identification plug and the trip unit.

[0007] In some embodiments of the first aspect, the detection voltage is a voltage between the identification plug and the release, and determining the connection state includes: in response to determining that the detection voltage reaches or exceeds a second reference voltage connected to the release, determining that a fault occurs in the connection between the identification plug and the release.

[0008] In some embodiments of the first aspect, in response to a fault in the connection between the identification plug and the release, setting the protection threshold voltage includes: in response to the presence of only contactless energy transfer system (CPS) power supply, setting the output voltage of the digital-to-analog converter to the protection threshold voltage.

[0009] In some embodiments of the first aspect, in response to a fault in the connection between the identification plug and the trip unit, setting the protection threshold voltage includes: generating a minimum voltage protection value through the digital-to-analog converter in response to the presence of a power supply other than the CPS; and setting the minimum voltage protection value to the protection threshold voltage.

[0010] In some embodiments of the first aspect, in response to no fault in the connection between the identification plug and the trip unit, setting the protection threshold voltage includes: in response to determining that the contact is in an open state, setting the output voltage of the identification plug to the protection threshold voltage.

[0011] In some embodiments of the first aspect, in response to the identification that the connection between the plug and the release is not faulty, setting the protection threshold voltage includes: in response to determining that the contact is in a closed state, setting the output voltage of the digital-to-analog converter to the protection threshold voltage.

[0012] In a second aspect of the present disclosure, a device for setting a protection threshold is provided. The device comprises: at least one processing unit; and at least one memory, the at least one memory being coupled to the at least one processing unit and storing instructions for execution by the at least one processing unit, the instructions causing the device to execute the method of the first aspect when executed by the at least one processing unit.

[0013] In a third aspect of the present disclosure, a device for setting a protection threshold is provided. The device includes a detection circuit configured to detect a voltage between an identification plug and a first reference voltage connected to the identification plug or a voltage between the identification plug and a release; a protection threshold setting circuit including a digital-to-analog converter, a switch, and a controller, the controller being configured to determine a connection state between the identification plug and the release based on the voltage detected by the detection circuit; and in response to a connection failure between the identification plug and the release, controlling the switch so that the protection threshold setting circuit sets the protection threshold voltage based on the output voltage of the digital-to-analog converter; and in response to no connection failure between the identification plug and the release, controlling the switch based on the contact state of the release so that the protection threshold setting circuit sets the protection threshold voltage based on one of the following: the output voltage of the digital-to-analog converter, or the output voltage of the identification plug.

[0014] In some embodiments, a detection circuit detects a voltage between the identification plug and the first reference voltage, and the controller is further configured to: in response to determining that the voltage detected by the detection circuit reaches or exceeds the first reference voltage, determine that a connection between the identification plug and the trip unit is faulty.

[0015] In some embodiments, a detection circuit detects a voltage between the identification plug and the trip unit, and the controller is further configured to: in response to determining that the detection voltage reaches or exceeds a second reference voltage connected to the trip unit, determine that a connection between the identification plug and the trip unit is faulty.

[0016] In some embodiments, the controller is further configured to: in response to a connection failure between the identification plug and the trip unit and only CPS power supply exists, control the switch so that the output voltage of the digital-to-analog converter is set to the protection threshold voltage.

[0017] In some embodiments, the controller is further configured to: in response to a fault in the connection between the identification plug and the trip unit and the presence of a power supply other than the CPS, control the digital-to-analog converter to generate a minimum voltage protection value; and control the switch so that the output voltage of the digital-to-analog converter is set to the protection threshold voltage.

[0018] In some embodiments, the controller is further configured to: in response to no failure in the connection between the identification plug and the trip unit and in response to determining that the contact is in an open state, control the switch so that the output voltage of the identification plug is set to a protection threshold voltage.

[0019] In some embodiments, the controller is further configured to: in response to the identification that the connection between the plug and the release is not faulty and in response to determining that the contact is in a closed state, control the switch so that the output voltage of the digital-to-analog converter is set to the protection threshold voltage.

[0020] In a fourth aspect of the present disclosure, a circuit breaker is provided, which includes an identification plug, a trip unit, and the device of the second aspect or the third aspect, which is used for setting a protection threshold.

[0021] In a fifth aspect of the present disclosure, a computer-readable storage medium is provided, wherein a computer program is stored on the computer-readable storage medium, and the computer program can be executed by a processor to implement the method of the first aspect.

[0022] It will be understood from the following description that, according to the embodiments of the present disclosure, the protection threshold of the integrated instantaneous protection can be flexibly set, thereby avoiding the loss of power supply continuity caused by the false tripping of the circuit breaker, and further improving the safety performance of the circuit breaker. Other benefits will be described below in conjunction with the corresponding embodiments.

[0023] It should be understood that the contents described in this content section are not intended to limit the key features or important features of the embodiments of the present disclosure, nor are they intended to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and other features, advantages and aspects of the embodiments of the present disclosure will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. In the accompanying drawings, the same or similar reference numerals represent the same or similar elements, wherein:

[0025] Figure 1 A schematic diagram showing an example environment in which embodiments of the present disclosure can be implemented;

[0026] Figure 2 A schematic circuit diagram of a device for setting a protection threshold according to some embodiments of the present disclosure is shown;

[0027] Figure 3 A flowchart showing a process for protection threshold setting according to some embodiments of the present disclosure is shown;

[0028] Figure 4 A schematic structural block diagram of an apparatus for setting a protection threshold according to some embodiments of the present disclosure is shown; and

[0029] Figure 5 A block diagram of a device capable of implementing various embodiments of the present disclosure is shown. DETAILED DESCRIPTION

[0030] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not intended to limit the scope of protection of the present disclosure.

[0031] In the description of the embodiments of the present disclosure, the term "including" and similar terms should be understood as open inclusion, that is, "including but not limited to". The term "based on" should be understood as "based at least in part on". The term "one embodiment" or "the embodiment" should be understood as "at least one embodiment". The term "some embodiments" should be understood as "at least some embodiments". Other explicit and implicit definitions may be included below. The terms "first", "second", etc. may refer to different or the same objects. Other explicit and implicit definitions may be included below.

[0032] As mentioned above, in actual use of the circuit breaker, for example, when it is in a harsh environment such as long-term vibration, the performer plug used for DIN / DINF settings and the electronic release of the circuit breaker are prone to poor contact. In this state, the circuit breaker will trip by mistake, thereby causing the power supply continuity to be destroyed.

[0033] To this end, the embodiments of the present disclosure propose a scheme for setting a protection threshold. According to various embodiments of the present disclosure, the protection threshold setting device can control the setting of the protection threshold voltage according to the connection state between the identification plug and the release and the contact state of the release, thereby effectively avoiding the false tripping of the circuit breaker, and further ensuring the continuity of power supply and the stability of the system.

[0034] Some example embodiments of the present disclosure will be described below with reference to the accompanying drawings. Please note that in some descriptions of the embodiments, certain specific values ​​may be involved in order to better help readers understand. These values ​​are exemplary and may vary according to specific application scenarios, and do not limit the scope of the present disclosure in any way.

[0035] Figure 1 1 is a schematic diagram of an example environment 100 in which embodiments of the present disclosure can be implemented. The environment 100 includes a circuit breaker 150, which in turn includes an identification plug 120, a trip unit 130, a detection circuit 140, and a protection threshold setting circuit 110. Figure 1In the illustrated embodiment, the protection threshold setting circuit 110 is included in the circuit breaker 150. It should be understood that the protection threshold setting circuit 110 may also be provided independently of the circuit breaker 150.

[0036] In the circuit breaker 150, the identification plug 120 and the release 130 can be connected to each other through a connector. The identification plug 120 can set the integrated instantaneous protection (DIN / DINF) of the circuit breaker 150. For example, the release 130 of the circuit breaker 150 can generate a protection voltage threshold according to the voltage division of the resistance on the identification plug 120 and the internal resistance of the release 130. Once the protection voltage threshold is reached, the contact of the release 130 is opened to disconnect the circuit.

[0037] It should be understood that the circuit breaker 150 may include any suitable elements for implementing its functions. In the embodiment of the present disclosure, the trip unit 130 and the identification plug 120 of the circuit breaker 150 may be implemented using any suitable elements and may be disposed at any position of the circuit breaker 150 .

[0038] The detection circuit 140 can measure the electrical parameters of the components included in the circuit breaker 150. The electrical parameters include but are not limited to voltage, current, resistance, inductance, etc. For example, the detection circuit 140 can measure the electrical parameters of the trip unit 130 and the identification plug 120 of the circuit breaker 150.

[0039] The protection threshold setting circuit 110 may include a controller 102. In some embodiments, the detection circuit 140 may also be implemented in the protection threshold setting circuit 110, for example, integrated in the controller 102. The controller 102 may receive the measured value of the electrical parameter of the circuit breaker 150 from the detection circuit 140 and control the setting of the protection threshold voltage of the protection threshold setting circuit 110 based on the measured value. In some embodiments, the controller 130 may include a micro control unit (MCU). However, this is only exemplary, and the controller 130 may also include other types of units, such as a processor, a microprocessor, a system on a chip (SoC), etc.

[0040] In some embodiments, the circuit breaker 150, the protection threshold setting circuit 110 and / or the controller 102 may also communicate with other external monitoring devices (not shown) in the environment 100 to obtain the measured values ​​of the electrical parameters associated with the circuit breaker 150. The monitoring device may be any type of device with computing capabilities, including a terminal device or a server device. The terminal device may be any type of mobile terminal, fixed terminal or portable terminal, including a mobile phone, a desktop computer, a laptop computer, a notebook computer, a netbook computer, a tablet computer, a media computer, a multimedia tablet, a personal communication system (PCS) device, a personal navigation device, a personal digital assistant (PDA), an audio / video player, a digital camera / camcorder, a positioning device, a television receiver, a radio broadcast receiver, an e-book device, a gaming device or any combination thereof, including accessories and peripherals of these devices or any combination thereof. The server device may include, for example, a computing system / server, such as a mainframe, an edge computing node, a computing device in a cloud environment, and the like. In some embodiments, the monitoring device may be a programmable logic controller (PLC) or a monitoring device.

[0041] It should be understood that the structure and functionality of environment 100 are described for exemplary purposes only and does not imply any limitation on the scope of the present disclosure.

[0042] Reference below Figure 2 The working principle and process of the protection threshold setting circuit according to the embodiment of the present disclosure are described. Figure 2 As shown, the identification plug 120 of the circuit breaker 150 includes resistors 122 and 124 and is connected to a reference voltage 141. The release 130 of the circuit breaker 150 includes a contact 130 and is connected to a reference voltage 142. The identification plug 120 and the release 130 are connected to each other, so that the release 130 can generate a protection voltage threshold according to the voltage division of the resistors 122 and 124 on the identification plug 120 and the internal resistance of the release 130.

[0043] When the circuit breaker is in the closed state, the release 130 is in the closed state, SELDINF and ground (GND) are short-circuited. When the circuit breaker is in the open state, the release 130 is in the open state, and SELDINF is connected to GND through the resistors 122 and 124 on the identification plug 120.

[0044] The detection circuit 140 can measure voltage values ​​(e.g., DINV and SELDINF) associated with the identification plug 120 and the release 130. When a connection failure occurs between the identification plug 120 and the release 130, DINV reaches a voltage value (e.g., 1.5V) of the reference voltage 141. If a connection failure also occurs to the release 130 at this time, SELDINF reaches a voltage value (e.g., 3.3V) of the reference voltage 142.

[0045] In addition, if Figure 2 As shown, the detection circuit 140 further includes an analog-to-digital converter (ADC) 108 and followers 151 and 152. Since the driving capability of the DINV voltage and the SELDINF voltage is limited, the followers 151 and 152 formed by amplifiers can enhance the signal driving capability to facilitate the ADC 108 to perform sampling.

[0046] In order to reduce the influence of the resistors 122 and 124 on the identification plug 120 on the DINV voltage, the tripper 130 is connected to the pull-up resistor 132. The resistance value of the pull-up resistor 132 is relatively large, so the input impedance of the amplifier using the followers 151 and 152 in the detection circuit 140 is also set to be relatively large. For example, as shown in the figure, a positive phase input amplifier structure can be adopted.

[0047] The protection threshold setting circuit 110 receives the measurement results (eg, DINV voltage and SELDINF voltage) from the detection circuit 140 and determines (eg, performed by the controller 102 in the protection threshold setting circuit 110 ) based on the measurement results to identify the connection status between the plug 120 and the trip unit 130 .

[0048] If the protection threshold setting circuit 110 determines that DINV reaches the first reference voltage and / or SELDINF reaches the second reference voltage, it is determined that a connection failure occurs between the identification plug 120 and the trip unit 130 .

[0049] In this case, the protection threshold setting circuit 110 can determine the power supply state of the circuit breaker 150 at this time. If the circuit breaker 150 has a power supply other than CPS at this time (such as 24V power supply or USB power supply) or the protection threshold setting circuit 110 determines that the circuit breaker 150 has a connection failure between the identification plug 120 and the release 130 when it is just powered on, the controller 102 can control the digital-to-analog converter 104 to output the minimum value of the voltage protection threshold, and control the switch 106 to connect to the contact 107, so that the minimum value of the voltage protection threshold output by the digital-to-analog converter 104 is set as the protection threshold voltage of the protection threshold setting circuit 110. In addition, in some embodiments, the protection threshold setting circuit 110 also issues an alarm in this case.

[0050] If the circuit breaker 150 is only powered by the CPS, the controller 102 controls the switch 106 to connect to the contact 107 , so that the voltage currently output by the digital-to-analog converter 104 is set as the protection threshold voltage of the protection threshold setting circuit 110 .

[0051] If the protection threshold setting circuit 110 determines (based on the detection result from the detection circuit 140 ) that the connection between the plug 120 and the trip unit 130 is not faulty, the protection threshold setting circuit 110 checks the current state of the contact 131 of the trip unit 130 .

[0052] If the protection threshold setting circuit 110 determines that the current contact 131 is in the open state, it is determined that the release 130 is tripped. That is, when the connection state between the identification plug 120 and the release 130 is normal, the current circuit breaker 150 may be overloaded or abnormal. At this time, the controller 102 can control the switch 106 to connect to the contact 105, so that the output voltage from the identification plug 120 is set as the protection threshold voltage of the protection threshold setting circuit 110.

[0053] If the protection threshold setting circuit 110 determines that the current contact 131 is in a closed state, that is, the connection state between the plug 120 and the trip unit 130 is normal and the current circuit breaker 150 is not overloaded or abnormal, the controller 102 can control the switch 106 to connect to the contact 107, so that the voltage currently output by the digital-to-analog converter 104 is set as the protection threshold voltage of the protection threshold setting circuit 110.

[0054] When it is identified that there is no fault in the connection between the plug 120 and the release 130 and the contact 131 of the release 130 is in a closed state, in some embodiments, the protection threshold setting circuit 110 can record the DINV voltage and instruct the detection circuit 140 to continuously detect the electrical parameters (such as voltage) of the circuit breaker 150 to continuously monitor the usage status of the circuit breaker 150.

[0055] In this way, the protection threshold setting circuit 110 can dynamically set the protection threshold voltage according to the connection status and working status between the components of the circuit breaker 150, thereby avoiding the false tripping of the circuit breaker and the resulting loss of power supply continuity.

[0056] Reference below Figure 3 A flow chart depicting a process 300 for protection threshold setting. The process 300 may be performed by the protection threshold setting circuit 110, such as by the controller 102 in the protection threshold setting circuit 110.

[0057] At block 310 , a connection state between the plug 120 and the trip unit 130 is identified based on the detection voltage determination.

[0058] In some embodiments, the detection voltage may be a voltage (eg, DINV) associated with identifying the plug 120. In some other embodiments, the detection voltage may be a voltage (eg, SELDINF) associated with the trip unit 130.

[0059] In some embodiments, if the detection voltage is a voltage related to the identification plug 120 (e.g., DINV), when DINV reaches the voltage value of the reference voltage 141 connected to the identification plug 120, the protection threshold setting circuit 110 determines that a fault occurs in the connection between the identification plug 120 and the trip unit 130.

[0060] In some embodiments, if the detection voltage is a voltage related to the trip unit 130 (e.g., SELDINF), when SELDINF reaches the voltage value of the reference voltage 142 connected to the trip unit 130, the protection threshold setting circuit 110 determines that a fault occurs in the connection between the identification plug 120 and the trip unit 130.

[0061] If it is determined at block 320 that the connection between the identification plug 120 and the trip unit 130 is faulty, then at block 330 a protection threshold voltage is set based on the output voltage of the digital-to-analog converter 104 .

[0062] In box 320, if it is determined that the connection between the identification plug 120 and the release 130 is not faulty, then in box 340, the protection threshold voltage is set based on at least the state of the contact 131 of the release 130 and one of the following: the output voltage of the digital-to-analog converter 104 or the output voltage of the identification plug 120.

[0063] In some implementations, if it is determined that the connection between the identification plug 120 and the trip unit 130 is faulty, in response to the presence of only CPS power, the output voltage of the digital-to-analog converter 104 is set to the protection threshold voltage.

[0064] In some implementations, if it is determined that the connection between the identification plug 120 and the trip unit 130 fails, in response to the presence of only power supply other than the CPS, a minimum voltage protection value is generated by the digital-to-analog converter 104; and the minimum voltage protection value is set to the protection threshold voltage.

[0065] In some embodiments, if it is determined that the connection between the identification plug 120 and the trip unit 130 is not faulty, in response to determining that the contact 131 is in the open state, the output voltage of the identification plug 120 is set to the protection threshold voltage.

[0066] In some embodiments, if it is determined that the connection between the identification plug 120 and the release 130 is not faulty, in response to determining that the contact 131 is in a closed state, the output voltage of the digital-to-analog converter 104 is set to a protection threshold voltage.

[0067] Figure 4 A schematic structural block diagram of an apparatus 400 for setting a protection threshold according to some embodiments of the present disclosure is shown. In some embodiments, the apparatus 400 may be implemented as or included in a circuit breaker 150. In some embodiments, the apparatus 400 may be implemented independently of the circuit breaker 150.

[0068] As shown in the figure, the device 400 includes a detection circuit 140 configured to detect a voltage between the identification plug 120 and a first reference voltage 141 connected to the identification plug 120 or a voltage between the identification plug 120 and the trip unit 130 .

[0069] The device 400 includes a protection threshold setting circuit 110, including a digital-to-analog converter 104, a switch 106, and a controller 102, wherein the controller 102 is configured to determine the connection state between the identification plug 120 and the release 130 based on the voltage detected by the detection circuit 140; and in response to a fault in the connection between the identification plug 120 and the release 130, control the switch 106 so that the protection threshold setting circuit 110 sets the protection threshold voltage based on the output voltage of the digital-to-analog converter 104; and in response to no fault in the connection between the identification plug 120 and the release 130, control the switch 106 based on the state of the contact 131 of the release 130 so that the protection threshold setting circuit 110 sets the protection threshold voltage based on one of the following: the output voltage of the digital-to-analog converter 104, or the output voltage of the identification plug 120.

[0070] In some embodiments, when the detection circuit 140 detects the voltage between the identification plug 120 and the first reference voltage 141, the controller 102 is further configured to: in response to determining that the voltage DINV detected by the detection circuit 140 reaches or exceeds the first reference voltage 141, determine that a fault has occurred in the connection between the identification plug 120 and the release 130.

[0071] In some embodiments, when the detection circuit 140 detects the voltage between the identification plug 120 and the release 130, the controller 102 is further configured to: in response to determining that the detected voltage (SELDINF) reaches or exceeds a second reference voltage 142 connected to the release 130, determine that a fault has occurred in the connection between the identification plug 120 and the release 130.

[0072] In some embodiments, the controller 102 is further configured to: in response to a connection failure between the identification plug 120 and the trip unit 130 and only CPS power supply, control the switch 106 so that the output voltage of the digital-to-analog converter 104 is set to the protection threshold voltage.

[0073] In some embodiments, the controller 102 is further configured to: in response to a fault in the connection between the identification plug 120 and the release 130 and the presence of a power supply other than the CPS, control the digital-to-analog converter 104 to generate a minimum voltage protection value; and control the switch 106 so that the output voltage of the digital-to-analog converter 104 is set to the protection threshold voltage.

[0074] In some embodiments, the controller 102 is further configured to: in response to no fault in the connection between the identification plug 120 and the trip unit 130 and in response to determining that the contact 131 is in an open state, control the switch 106 so that the output voltage of the identification plug 120 is set to a protection threshold voltage.

[0075] In some embodiments, the controller 102 is further configured to: in response to the identification that there is no fault in the connection between the plug 120 and the release 130 and in response to determining that the contact 131 is in a closed state, control the switch 106 so that the output voltage of the digital-to-analog converter 104 is set to the protection threshold voltage.

[0076] Figure 5 A block diagram of an electronic device 500 is shown in which one or more embodiments of the present disclosure may be implemented. It should be understood that Figure 5 The electronic device 500 shown is merely exemplary and should not constitute any limitation on the functionality and scope of the embodiments described herein. Figure 5 The electronic device 500 shown can be used to implement Figure 1 The protection threshold setting circuit 110 or the controller 102 or at least a portion of the device 400.

[0077] like Figure 5As shown, the electronic device 500 is in the form of a general electronic device. The components of the electronic device 500 may include, but are not limited to, one or more processors or processing units 510, a memory 520, a storage device 530, one or more communication units 540, one or more input devices 550, and one or more output devices 560. The processing unit 510 may be an actual or virtual processor and is capable of performing various processes according to a program stored in the memory 520. In a multi-processor system, multiple processing units execute computer executable instructions in parallel to improve the parallel processing capability of the electronic device 500.

[0078] The electronic device 500 typically includes a plurality of computer storage media. Such media may be any accessible media that is accessible to the electronic device 500, including but not limited to volatile and non-volatile media, removable and non-removable media. The memory 520 may be a volatile memory (e.g., a register, a cache, a random access memory (RAM)), a non-volatile memory (e.g., a read-only memory (ROM), an electrically erasable programmable read-only memory (EEPROM), flash memory), or some combination thereof. The storage device 530 may be a removable or non-removable medium, and may include a machine-readable medium, such as a flash drive, a disk, or any other medium, which may be capable of being used to store information and / or data (e.g., training data for training) and may be accessed within the electronic device 500.

[0079] The electronic device 500 may further include additional removable / non-removable, volatile / non-volatile storage media. Figure 5 As shown in , a disk drive for reading or writing from a removable, non-volatile disk (e.g., a "floppy disk") and an optical drive for reading or writing from a removable, non-volatile optical disk may be provided. In these cases, each drive may be connected to the bus (not shown) by one or more data media interfaces. The memory 520 may include a computer program product 525 having one or more program modules that are configured to perform various methods or actions of various embodiments of the present disclosure.

[0080] The communication unit 540 implements communication with other electronic devices through a communication medium. Additionally, the functions of the components of the electronic device 500 can be implemented in a single computing cluster or multiple computing machines that can communicate through a communication connection. Therefore, the electronic device 500 can operate in a networked environment using a logical connection with one or more other servers, a network personal computer (PC), or another network node.

[0081] The input device 550 may be one or more input devices, such as a mouse, a keyboard, a tracking ball, etc. The output device 560 may be one or more output devices, such as a display, a speaker, a printer, etc. The electronic device 500 may also communicate with one or more external devices (not shown) through the communication unit 540 as needed, such as a storage device, a display device, etc., communicate with one or more devices that allow a user to interact with the electronic device 500, or communicate with any device that allows the electronic device 500 to communicate with one or more other electronic devices (e.g., a network card, a modem, etc.). Such communication may be performed via an input / output (I / O) interface (not shown).

[0082] According to an exemplary implementation of the present disclosure, a device for setting a protection threshold is provided. The device includes at least one processing unit and at least one memory. The at least one memory is coupled to the at least one processing unit and stores instructions for execution by the at least one processing unit, and when the instructions are executed by the at least one processing unit, the device executes the method described above.

[0083] According to an exemplary implementation of the present disclosure, a circuit breaker is provided, which includes: a coil; and a device for monitoring the temperature of the coil.

[0084] According to an exemplary implementation of the present disclosure, a computer-readable storage medium is provided, on which computer-executable instructions are stored, wherein the computer-executable instructions are executed by a processor to implement the method described above. According to an exemplary implementation of the present disclosure, a computer program product is also provided, which is tangibly stored on a non-transitory computer-readable medium and includes computer-executable instructions, and the computer-executable instructions are executed by a processor to implement the method described above.

[0085] Various aspects of the present disclosure are described herein with reference to the flowcharts and / or block diagrams of the methods, devices, equipment, and computer program products implemented according to the present disclosure. It should be understood that each box in the flowchart and / or block diagram and the combination of each box in the flowchart and / or block diagram can be implemented by computer-readable program instructions.

[0086] These computer-readable program instructions can be provided to a processing unit of a general-purpose computer, a special-purpose computer, or other programmable data processing device, thereby producing a machine, so that when these instructions are executed by the processing unit of the computer or other programmable data processing device, a device that implements the functions / actions specified in one or more boxes in the flowchart and / or block diagram is generated. These computer-readable program instructions can also be stored in a computer-readable storage medium, and these instructions cause the computer, programmable data processing device, and / or other equipment to work in a specific manner, so that the computer-readable medium storing the instructions includes a manufactured product, which includes instructions for implementing various aspects of the functions / actions specified in one or more boxes in the flowchart and / or block diagram.

[0087] Computer-readable program instructions can be loaded onto a computer, other programmable data processing apparatus, or other device so that a series of operational steps are performed on the computer, other programmable data processing apparatus, or other device to produce a computer-implemented process, so that the instructions executed on the computer, other programmable data processing apparatus, or other device implement the functions / actions specified in one or more boxes in the flowchart and / or block diagram.

[0088] The flow chart and block diagram in the accompanying drawings show the possible architecture, function and operation of the system, method and computer program product according to multiple implementations of the present disclosure. In this regard, each square box in the flow chart or block diagram can represent a part of a module, program segment or instruction, and a part of a module, program segment or instruction includes one or more executable instructions for realizing the logical function of the specification. In some implementations as replacements, the function marked in the square box can also occur in a sequence different from that marked in the accompanying drawings. For example, two continuous square boxes can actually be executed substantially in parallel, and they can sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each square box in the block diagram and / or flow chart, and the combination of the square boxes in the block diagram and / or flow chart can be realized by a special hardware-based system that performs the function or action of the specification, or can be realized by a combination of special hardware and computer instructions.

[0089] The above descriptions of various implementations of the present disclosure are exemplary, non-exhaustive, and not limited to the disclosed implementations. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described implementations. The selection of terms used herein is intended to best explain the principles of the implementations, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the various implementations disclosed herein.

Claims

1. A method for setting a protection threshold, comprising: Determine and identify the connection state between the plug and the release based on the detection voltage; In response to a connection failure between the identification plug and the trip unit, setting a protection threshold voltage based on an output voltage of a digital-to-analog converter; as well as In response to the identification that the connection between the plug and the trip unit is not faulty, the protection threshold voltage is set based on at least a contact state of the trip unit and one of: the output voltage of the digital-to-analog converter, or The output voltage of the identification plug.

2. The method according to claim 1, wherein the detection voltage is a voltage between the identification plug and a first reference voltage connected to the identification plug, and wherein determining the connection state comprises: In response to determining that the detection voltage reaches or exceeds the first reference voltage, it is determined that a connection failure occurs between the identification plug and the trip unit.

3. The method according to claim 1, wherein the detection voltage is a voltage between the identification plug and the release, and wherein determining the connection state comprises: In response to determining that the detection voltage reaches or exceeds a second reference voltage connected to the trip unit, it is determined that a connection between the identification plug and the trip unit is faulty.

4. The method according to claim 1, wherein in response to a connection failure between the identification plug and the release, setting the protection threshold voltage comprises: In response to the presence of only the contactless energy transfer system CPS power supply, the output voltage of the digital-to-analog converter is set to the protection threshold voltage.

5. The method according to claim 1, wherein in response to a connection failure between the identification plug and the trip unit, setting the protection threshold voltage comprises: In response to the presence of a power supply other than the CPS, Generate a minimum voltage protection value by means of the digital-to-analog converter; as well as The minimum voltage protection value is set as the protection threshold voltage.

6. The method according to claim 1, wherein in response to no failure in the connection between the identification plug and the release, setting the protection threshold voltage comprises: In response to determining that the contacts are in the open state, the output voltage of the identification plug is set to a protection threshold voltage.

7. The method according to claim 1, wherein in response to no failure in the connection between the identification plug and the release, setting the protection threshold voltage comprises: In response to determining that the contacts are in a closed state, an output voltage of the digital-to-analog converter is set to a protection threshold voltage.

8. A device for setting a protection threshold, comprising: at least one processing unit; as well as At least one memory, the at least one memory being coupled to the at least one processing unit and storing instructions for execution by the at least one processing unit, the instructions causing the apparatus to perform the method according to any one of claims 1 to 7 when executed by the at least one processing unit.

9. A device for setting a protection threshold, comprising: a detection circuit configured to detect a voltage between the identification plug and a first reference voltage connected to the identification plug or a voltage between the identification plug and a trip unit; a protection threshold setting circuit, comprising a digital-to-analog converter, a switch, and a controller, wherein the controller is configured to determine a connection state between the identification plug and the trip unit based on a voltage detected by the detection circuit; as well as In response to a connection failure between the identification plug and the trip unit, controlling the switch so that the protection threshold setting circuit sets a protection threshold voltage based on an output voltage of the digital-to-analog converter; as well as In response to the connection between the identification plug and the release not failing, the switch is controlled based on the contact state of the release so that the protection threshold setting circuit sets the protection threshold voltage based on one of the following: the output voltage of the digital-to-analog converter, or The output voltage of the identification plug.

10. The apparatus of claim 9, wherein the detection circuit detects a voltage between the identification plug and the first reference voltage, and wherein the controller is further configured to: In response to determining that the voltage detected by the detection circuit reaches or exceeds the first reference voltage, it is determined that a connection failure occurs between the identification plug and the trip unit.

11. The device according to claim 9, wherein the detection circuit detects a voltage between the identification plug and the release, and wherein the controller is further configured to: In response to determining that the detection voltage reaches or exceeds a second reference voltage connected to the trip unit, it is determined that a connection between the identification plug and the trip unit is faulty.

12. The apparatus according to claim 9, wherein the controller is further configured to: In response to a connection failure between the identification plug and the trip unit and only power supply from the contactless energy transfer system CPS, the switch is controlled so that the output voltage of the digital-to-analog converter is set to the protection threshold voltage.

13. The apparatus according to claim 9, wherein the controller is further configured to: In response to a connection failure between the identification plug and the trip unit and the presence of a power supply other than the CPS, controlling the digital-to-analog converter to generate a minimum voltage protection value; and The switch is controlled so that the output voltage of the digital-to-analog converter is set to the protection threshold voltage.

14. The apparatus according to claim 9, wherein the controller is further configured to: In response to no failure in the connection between the identification plug and the trip unit and in response to determining that the contacts are in an open state, the switch is controlled so that an output voltage of the identification plug is set to a protection threshold voltage.

15. The apparatus of claim 9, wherein the controller is further configured to: In response to the connection between the identification plug and the trip unit not failing and in response to determining that the contacts are in a closed state, the switch is controlled so that the output voltage of the digital-to-analog converter is set to the protection threshold voltage.

16. A circuit breaker comprising: Identify the plug; Trip device; as well as The device according to any one of claims 8 to 15, used for setting a protection threshold.

17. A computer-readable storage medium having a computer program stored thereon, wherein the computer program can be executed by a processor to implement the method according to any one of claims 1 to 7.

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