Fault processing method, processing device, readable storage medium and distribution box

Abstract

The invention provides a fault processing method and device, a readable storage medium and a distribution box. The fault processing method comprises the following steps: acquiring a first current value flowing through a zero line, a second current value flowing through a first live wire and a third current value flowing through a second live wire; acquiring a first voltage value between the first live wire and the null line and a second voltage value between the second live wire and the null line; when the first current value is zero and it is detected that the second current value, the third current value, the first voltage value and the second voltage value meet corresponding fault conditions, it is determined that a zero-line breaking fault exists; and controlling the switching device to be switched off under the condition that the zero-line breaking fault is detected. By operating the fault processing method, the power supply to the load can be cut off by controlling the switching device to be switched off under the condition that the zero line breaking fault exists. In the process, the potential safety hazard caused by the zero line breaking fault can be eliminated by cutting off the power supply.

Description

Technical Field

[0001] The present invention relates to the technical field of power distribution equipment, and in particular to a fault handling method, a handling device, a readable storage medium and a distribution box. Background Art

[0002] The household storage system consists of a household storage all-in-one machine, a battery pack and a distribution box, among which the distribution box is directly connected to the user's load and other electrical equipment.

[0003] Specifically, the mains transmits electrical energy to the distribution box through the household meter, and the distribution box then outputs the electrical energy to electrical equipment such as single-phase loads and two-phase loads.

[0004] If a zero failure occurs, it will bring serious consequences to the user.

[0005] Figure 1 A schematic diagram showing a zero line circuit breaker fault in a related technical solution is shown. Figure 2 The schematic diagram of the PEN line open circuit fault in the zero-fault interruption of the related technical solution is shown. Figure 1 and Figure 2 As shown, Figure 1 The cross mark in the middle is the PEN line, Figure 2 The cross mark in the middle is the N line. The PEN line is before the North American household storage smart gateway distribution box or the North American user distribution box mains line is grounded, and the N line is after grounding. The North American residential electricity voltage is two-phase AC240V, 60HZ, single-phase AC120V, and the two-phase phase difference is 180 degrees.

[0006] like Figure 1 As shown, the N line is located in the distribution box or after the distribution box is grounded, the N line in the distribution box is disconnected, which will cause the load current to be unable to flow back through the original N path and can only flow back through the dotted path shown in the figure. The loads on the L1 and L2 lines become connected in series, and AC240V is applied to L1 and L2. The loads on the two phases are unbalanced, and the voltages distributed to load 1 and load 2 are uneven. The voltage on the single-phase load side will exceed the rated voltage AC120V, causing load overvoltage. Long-term operation will cause the load to heat up and lead to electrical fires.

[0007] like Figure 2 As shown, the PEN line is located in the distribution box or before the distribution box is grounded. The PEN line is disconnected. Figure 2 As a result, the load current cannot flow back through the original PEN path and can only flow back through the dotted path shown in the figure. The impedance of the original PEN wire is small and can be ignored. The impedance of the current path becomes larger, causing the potential of the UN point to increase significantly. The voltage of the load shell with the shell grounded is high, resulting in personal electric shock accidents. At the same time, the change in load voltage causes the working characteristics of the electrical equipment to change, damaging the equipment. Summary of the invention

[0008] The present invention aims to at least solve the technical problem existing in the prior art or related art that if a zero failure occurs, it will bring serious consequences to the user.

[0009] To this end, a first aspect of the present invention is to provide a fault handling method.

[0010] A second aspect of the present invention is to provide a fault handling device.

[0011] A third aspect of the present invention is to provide another fault handling device.

[0012] A fourth aspect of the present invention provides a readable storage medium.

[0013] A fifth aspect of the present invention is to provide a distribution box.

[0014] A sixth aspect of the present invention is to provide another distribution box.

[0015] In view of this, according to a first aspect of the present invention, the present invention provides a fault handling method for a distribution box, the distribution box comprising a switch device and a neutral line, the neutral point of the neutral line is grounded, the input end of the switch device is used to connect to the first live line and the second live line in the access line, the output end of the switch device is used to connect to the load, the neutral line is respectively connected to the load and the PEN line in the access line, the fault handling method comprises: obtaining a first current value flowing through the neutral line, a second current value flowing through the first live line and a third current value flowing through the second live line; obtaining a first voltage value between the first live line and the neutral line, and a second voltage value between the second live line and the neutral line; determining that there is a zero-break fault when the first current value is zero and the second current value, the third current value, the first voltage value and the second voltage value are detected to meet the corresponding fault conditions; when a zero-break fault is detected, controlling the switch device to disconnect.

[0016] The present invention proposes a fault handling method. By running the above fault handling method, in the case of a zero failure, the switch device can be controlled to disconnect to cut off the power supply to the load. In this process, by disconnecting the power supply, the safety hazard caused by the zero failure can be eliminated. In addition, the fault handling method proposed in the present application also has the following additional technical features.

[0017] In some technical schemes, optionally, the zero-break fault includes a zero-line circuit break fault in the distribution box. When the first live wire and the second live wire output power at the same time, and the first current value is zero, and the second current value, the third current value, the first voltage value, and the second voltage value are detected to meet the corresponding fault conditions, it is determined that there is a zero-break fault, specifically including: based on the first current value being zero, the second current value and the third current value being equal and not zero, and the first voltage value or the second voltage value being not equal to the first voltage threshold, it is determined that there is a zero-line circuit break fault in the distribution box; wherein the first voltage threshold is the single-phase rated AC voltage.

[0018] In this technical solution, when the first live wire and the second live wire output power at the same time, if the second current value and the third current value are not zero and are equal, there are two situations.

[0019] Specifically, the first case is a two-phase load balance state, in which the current value flowing through the first live wire is the same as the current value flowing through the second live wire, but the phases of the current values ​​are opposite. In this case, the current value flowing through the neutral line will be zero.

[0020] At this time, whether there is a two-phase load balance state can be further determined by the first voltage value and the second voltage value. If the first voltage value and the second voltage value are both the first voltage threshold, it is considered that there is a two-phase load balance state.

[0021] On the contrary, if the first voltage value or the second voltage value is not the first voltage threshold, there is a neutral line circuit breaker fault in the distribution box.

[0022] In this process, whether there is a neutral line circuit break fault in the distribution box can be specifically judged based on the current value and voltage value, so as to improve the accuracy of judging the neutral line circuit break fault in the distribution box.

[0023] In some technical solutions, the first voltage threshold is a single-phase rated AC voltage.

[0024] In some technical aspects, the single-phase rated AC voltage is a North American residential single-phase rated AC voltage.

[0025] Specifically, the North American residential single-phase rated AC voltage is 120 volts.

[0026] In addition, when the first voltage value or the second voltage value is not the first voltage threshold, that is, when there is a neutral line circuit fault in the distribution box, the switch device is controlled to disconnect so as to eliminate the situation where the single-phase load side voltage exceeds the first voltage threshold, thereby avoiding load overvoltage, long-term operation causing load heating and electrical fires, thereby improving electricity safety.

[0027] In some technical solutions, optionally, the distribution box also includes a communication module, and the fault handling method also includes: when a neutral line circuit break fault is detected in the distribution box, sending a first alarm message to the gateway through the communication module; wherein, when the gateway receives the first alarm message, it sends an alarm message corresponding to the first alarm message to the user terminal.

[0028] In this technical solution, a communication module is set up so that the first alarm information can be sent to the gateway by using the communication module, so that the gateway can notify the user terminal that there is a neutral wire circuit break fault in the distribution box, so that the user can promptly maintain the existing neutral wire circuit break fault in the distribution box, thereby minimizing the impact of the neutral wire circuit break fault in the distribution box on the load power consumption.

[0029] In some technical schemes, optionally, the zero-break fault includes a PEN line open circuit fault. When the first current value is zero and the second current value, the third current value, the first voltage value and the second voltage value are detected to meet the corresponding fault conditions, it is determined that there is a zero-break fault, specifically including: when the first live wire and the second live wire output power at the same time, based on the first current value being zero, the second current value and the third current value being unequal and not zero, and the first voltage value or the second voltage value being not equal to the first voltage threshold, it is determined that there is a PEN line open circuit fault; when one-phase output power is output in the first live wire and the second live wire, based on the first current value being zero, the second current value being zero, the third current value being not zero, and the first voltage value being greater than the first voltage threshold, it is determined that there is a PEN line open circuit fault. ; In the case of one-phase output power supply in the first live wire and the second live wire, based on the first current value being zero, the second current value being zero, the third current value being not zero, and the second voltage value being less than the first voltage threshold, it is determined that there is a PEN line circuit fault; in the case of one-phase output power supply in the first live wire and the second live wire, based on the first current value being zero, the second current value being not zero, the third current value being zero, and the first voltage value being less than the first voltage threshold, it is determined that there is a PEN line circuit fault; in the case of one-phase output power supply in the first live wire and the second live wire, based on the first current value being zero, the second current value being not zero, the third current value being zero, and the second voltage value being greater than the first voltage threshold, it is determined that there is a PEN line circuit fault; wherein the first voltage threshold is the single-phase rated AC voltage.

[0030] In this technical solution, for a PEN line circuit breaker fault, there is no interference with the two-phase load balance state, so it can be divided into two situations according to the simultaneous output power supply of the first live wire and the second live wire and the single-phase output power supply.

[0031] Specifically, in the case where the first live wire and the second live wire output power at the same time, current will flow on the first live wire and the second live wire at the same time. At this time, neither the second current value nor the third current value is zero. At this time, if the first voltage value or the second voltage value is not equal to the first voltage threshold, it can be determined that there is a PEN line circuit breaker fault.

[0032] In the case where only one-phase output power supply is provided in the first live wire and the second live wire, one of the second current value and the third current value will be zero, and the other will not be zero. Specifically, in the case where one-phase output power supply is provided in the first live wire and the second live wire, based on the first current value being zero, the second current value being zero, the third current value being non-zero, and the first voltage value being greater than the first voltage threshold, it is determined that there is a PEN line circuit break fault; in the case where one-phase output power supply is provided in the first live wire and the second live wire, based on the first current value being zero, the second current value being zero, the third current value being non-zero, and the second voltage value being less than the first voltage threshold, it is determined that there is a PEN line circuit break fault; in the case where one-phase output power supply is provided in the first live wire and the second live wire, based on the first current value being zero, the second current value being non-zero, the third current value being zero, and the first voltage value being less than the first voltage threshold, it is determined that there is a PEN line circuit break fault;

[0033] In the above technical solution, the first live wire and the second live wire can be classified according to their output power supply conditions, and whether there is a PEN line circuit breaker fault can be determined according to the classification result.

[0034] In this process, the PEN line circuit breaker fault can be accurately determined, thereby improving power safety.

[0035] In some technical solutions, optionally, the distribution box also includes a communication module, and the fault handling method also includes: when a PEN line circuit break fault is detected, sending a second alarm message to the gateway through the communication module; wherein, when the gateway receives the second alarm message, it sends an alarm message corresponding to the second alarm message to the user terminal.

[0036] In this technical solution, a communication module is set up so that the second alarm information can be sent to the gateway by using the communication module, so that the gateway can notify the user terminal that there is a PEN line circuit break fault in the distribution box, so that the user can maintain the existing PEN line circuit break fault in time, thereby minimizing the impact of the PEN line circuit break fault on load power consumption.

[0037] According to a second aspect of the present invention, the present invention provides a fault handling device for a distribution box, the distribution box comprising a switch device and a neutral line, the neutral point of the neutral line is grounded, the input end of the switch device is used to connect to a first live line and a second live line in an access line, the output end of the switch device is used to connect to a load, the neutral line is respectively connected to the load and a PEN line in the access line, the fault handling device comprises: a first acquisition unit, used to acquire a first current value flowing through the neutral line, a second current value flowing through the first live line, and a third current value flowing through the second live line; a second acquisition unit, used to acquire a first voltage value between the first live line and the neutral line, and a second voltage value between the second live line and the neutral line; a detection unit, used to determine the presence of a zero-break fault when the first current value is zero and the second current value, the third current value, the first voltage value, and the second voltage value are detected to meet corresponding fault conditions; a control unit, used to control the switch device to disconnect when a zero-break fault is detected.

[0038] The present invention provides a fault handling device, which can control the switch device to disconnect in the case of a zero failure to cut off the power supply to the load. In this process, by disconnecting the power supply, the safety hazard caused by the zero failure can be eliminated.

[0039] In addition, the fault handling device proposed in this application also has the following additional technical features.

[0040] In some technical schemes, optionally, the zero-line fault includes a zero-line circuit break fault in the distribution box. When the first live wire and the second live wire output power at the same time, the detection unit is specifically used to: determine the existence of a zero-line circuit break fault in the distribution box based on the first current value being zero, the second current value and the third current value being equal and not zero, and the first voltage value or the second voltage value being not equal to the first voltage threshold; wherein the first voltage threshold is the single-phase rated AC voltage.

[0041] In this technical solution, when the first live wire and the second live wire output power at the same time, if the second current value and the third current value are not zero and are equal, there are two situations.

[0042] Specifically, the first case is a two-phase load balance state, in which the current value flowing through the first live wire is the same as the current value flowing through the second live wire, but the phases of the current values ​​are opposite. In this case, the current value flowing through the neutral line will be zero.

[0043] At this time, whether there is a two-phase load balance state can be further determined by the first voltage value and the second voltage value. If the first voltage value and the second voltage value are both the first voltage threshold, it is considered that there is a two-phase load balance state.

[0044] On the contrary, if the first voltage value or the second voltage value is not the first voltage threshold, it is determined that there is a neutral line circuit breaker fault in the distribution box.

[0045] In this process, whether there is a neutral line circuit break fault in the distribution box can be specifically judged based on the current value and voltage value, so as to improve the accuracy of judging the neutral line circuit break fault in the distribution box.

[0046] In some technical solutions, the first voltage threshold is a single-phase rated AC voltage.

[0047] In some technical aspects, the single-phase rated AC voltage is a North American residential single-phase rated AC voltage.

[0048] Specifically, the North American residential single-phase rated AC voltage is 120 volts.

[0049] In addition, when the first voltage value or the second voltage value is not the first voltage threshold, that is, when there is a neutral line circuit fault in the distribution box, the switch device is controlled to disconnect so as to eliminate the situation where the single-phase load side voltage exceeds the first voltage threshold, thereby avoiding load overvoltage, long-term operation causing load heating and electrical fires, thereby improving electricity safety.

[0050] In some technical solutions, optionally, the distribution box also includes a communication module and a control unit, and is also used to: when a neutral line circuit break fault is detected in the distribution box, send a first alarm message to the gateway through the communication module; wherein, when the gateway receives the first alarm message, it sends an alarm message corresponding to the first alarm message to the user terminal.

[0051] In this technical solution, a communication module is set up so that the first alarm information can be sent to the gateway by using the communication module, so that the gateway can notify the user terminal that there is a neutral wire circuit break fault in the distribution box, so that the user can promptly maintain the existing neutral wire circuit break fault in the distribution box, thereby minimizing the impact of the neutral wire circuit break fault in the distribution box on the load power consumption.

[0052] In some technical schemes, optionally, the zero-break fault includes a PEN line circuit-breaking fault, and the detection unit is specifically used to: when the first live wire and the second live wire output power at the same time, based on the first current value being zero, the second current value and the third current value being unequal and not zero, and the first voltage value or the second voltage value being not equal to the first voltage threshold, determine that there is a PEN line circuit-breaking fault; when one-phase output power is supplied from the first live wire and the second live wire, based on the first current value being zero, the second current value being zero, the third current value being not zero, and the first voltage value being greater than the first voltage threshold, determine that there is a PEN line circuit-breaking fault; when one-phase output power is supplied from the first live wire and the second live wire, based on the first current value being zero, the second current value being zero, the third current value being not zero, and the first voltage value being greater than the first voltage threshold, determine that there is a PEN line circuit-breaking fault. When the first current value is zero, the second current value is zero, the third current value is not zero, and the second voltage value is less than the first voltage threshold, it is determined that there is a PEN line circuit fault; when one-phase output power supply is provided in the first live wire and the second live wire, based on the first current value being zero, the second current value being not zero, the third current value being zero, and the first voltage value being less than the first voltage threshold, it is determined that there is a PEN line circuit fault; when one-phase output power supply is provided in the first live wire and the second live wire, based on the first current value being zero, the second current value being not zero, the third current value being zero, and the second voltage value being greater than the first voltage threshold, it is determined that there is a PEN line circuit fault; wherein the first voltage threshold is the single-phase rated AC voltage.

[0053] In this technical solution, for a PEN line circuit breaker fault, there is no interference with the two-phase load balance state, so it can be divided into two situations according to the simultaneous output power supply of the first live wire and the second live wire and the single-phase output power supply.

[0054] Specifically, in the case where the first live wire and the second live wire output power at the same time, current will flow on the first live wire and the second live wire at the same time. At this time, neither the second current value nor the third current value is zero. At this time, if the first voltage value or the second voltage value is not equal to the first voltage threshold, it can be determined that there is a PEN line circuit breaker fault.

[0055] In the case where only one-phase output power supply is provided in the first live wire and the second live wire, one of the second current value and the third current value will be zero, and the other will not be zero. Specifically, in the case where one-phase output power supply is provided in the first live wire and the second live wire, based on the first current value being zero, the second current value being zero, the third current value being non-zero, and the first voltage value being greater than the first voltage threshold, it is determined that there is a PEN line circuit break fault; in the case where one-phase output power supply is provided in the first live wire and the second live wire, based on the first current value being zero, the second current value being zero, the third current value being non-zero, and the second voltage value being less than the first voltage threshold, it is determined that there is a PEN line circuit break fault; in the case where one-phase output power supply is provided in the first live wire and the second live wire, based on the first current value being zero, the second current value being non-zero, the third current value being zero, and the first voltage value being less than the first voltage threshold, it is determined that there is a PEN line circuit break fault;

[0056] In the above technical solution, the first live wire and the second live wire can be classified according to their output power supply conditions, and whether there is a PEN line circuit breaker fault can be determined according to the classification result.

[0057] In this process, the PEN line circuit breaker fault can be accurately determined, thereby improving power safety.

[0058] In some technical solutions, optionally, the distribution box also includes a communication module and a control unit, and is also used to: when a PEN line circuit break fault is detected, send a second alarm message to the gateway through the communication module; wherein, when the gateway receives the second alarm message, it sends an alarm message corresponding to the second alarm message to the user terminal.

[0059] In this technical solution, a communication module is set up so that the second alarm information can be sent to the gateway by using the communication module, so that the gateway can notify the user terminal that there is a PEN line circuit break fault in the distribution box, so that the user can maintain the existing PEN line circuit break fault in time, thereby minimizing the impact of the PEN line circuit break fault on load power consumption.

[0060] According to the third aspect of the present invention, the present invention provides a fault handling device, including a processor and a memory, the memory storing programs or instructions that can be run on the processor, and when the programs or instructions are executed by the processor, the steps of any of the fault handling methods described above are implemented.

[0061] According to a fourth aspect of the present invention, the present invention provides a readable storage medium, on which a program or instruction is stored, and when the program or instruction is executed by a processor, the steps of any of the above-mentioned fault handling methods are implemented.

[0062] According to a fifth aspect of the present invention, the present invention provides a distribution box, comprising: any one of the above-mentioned fault handling devices; and / or the above-mentioned readable storage medium.

[0063] According to a sixth aspect of the present invention, the present invention provides a distribution box, comprising: a switch device, the input end of the switch device is used to connect to a first live wire and a second live wire in an access line, and the output end of the switch device is used to connect to a load; a neutral line, the neutral line is respectively connected to the load and a PEN line in the access line; an AC acquisition module, used to collect a first current value flowing through the neutral line, a second current value flowing through the first live wire, and a third current value flowing through the second live wire; and to collect a first voltage value between the first live wire and the neutral line, and a second voltage value between the second live wire and the neutral line; a controller, respectively connected to the AC acquisition module and the switch device, for executing the steps of a fault handling method as described in any one of the above.

[0064] In the technical solution, the present invention proposes a distribution box, which can cut off the power supply to the load by controlling the switch device to disconnect when there is a zero failure. In this process, by disconnecting the power supply, the safety hazard caused by the zero failure can be eliminated.

[0065] In some technical schemes, optionally, the distribution box also includes: a signal control output module, the input end of the signal control output module is connected to the controller, and the output end of the signal control output module is connected to the switching device; a signal feedback acquisition module is connected to the controller and is used to collect the opening and closing status of the switching device; wherein, when the controller detects a zero-break fault, the controller controls the signal control output module to send a control signal to the switching device to control the switching device to disconnect; and the control signal feedback acquisition module detects the opening and closing status of the switching device.

[0066] In this technical solution, a signal control output module is set up so that the signal control output module can be used to realize the control of the switching device. At the same time, a signal feedback acquisition module is set up so that the signal feedback acquisition module can be used to collect the opening and closing states of the switching device. Then, when the signal control output module is used to control the switching device to be disconnected, the signal feedback acquisition module is used to verify the state of the switching device, thereby ensuring the stable operation of the switching device, thereby ensuring the reliability of the distribution box.

[0067] In some technical solutions, the switching device may be a relay.

[0068] In some technical solutions, optionally, the distribution box also includes: a power supply module, which is connected to the switch device, the AC acquisition module, the controller, the signal control output module and the signal feedback acquisition module to provide power supply.

[0069] In this technical solution, a power supply module is provided so that the power supply module can be used to centrally power the switching device, AC acquisition module, controller, signal control output module and signal feedback acquisition module. In this process, there is no need to set up a power supply for each module separately, which reduces the complexity of the distribution box and the material cost and assembly cost of the distribution box.

[0070] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0071] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0072] Figure 1 A schematic diagram of a neutral line open circuit fault in a zero line open circuit fault in a related embodiment is shown;

[0073] Figure 2 A schematic diagram of a PEN line open circuit fault in a zero-break fault in a related embodiment is shown;

[0074] Figure 3 One of the flowcharts of a fault handling method in an embodiment of the present invention is shown;

[0075] Figure 4 One of the schematic diagrams of a distribution box in an embodiment of the present invention is shown;

[0076] Figure 5 A second schematic diagram of a distribution box in an embodiment of the present invention is shown;

[0077] Figure 6 A schematic block diagram of a fault handling device in an embodiment of the present invention is shown;

[0078] Figure 7 A schematic block diagram of another fault handling device in an embodiment of the present invention is shown;

[0079] Figure 8 A schematic diagram of a module of a distribution box in an embodiment of the present invention is shown;

[0080] Fig. 9 The second flowchart of a fault handling method in an embodiment of the present invention is shown.

[0081] in, Figure 4 and Figure 5 The corresponding relationship between the reference numerals and the component names is as follows:

[0082] L1 is the first live wire, L2 is the second live wire, N is the neutral wire, K is the switch device, CTL1 is the first current transformer, CTL2 is the second current transformer, CTL3 is the third current transformer, V1N is the first voltage acquisition module, and V2N is the second voltage acquisition module. DETAILED DESCRIPTION

[0083] In order to more clearly understand the above aspects, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0084] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0085] In one embodiment of the present application, Figure 3 As shown, a fault handling method is provided, which is used for a distribution box, the distribution box includes a switch device and a neutral line, the neutral point of the neutral line is grounded, the input end of the switch device is used to connect with the first live line and the second live line in the access line, the output end of the switch device is used to connect with the load, the neutral line is respectively connected to the load and the PEN line in the access line, and the fault handling method includes:

[0086] Step 302, obtaining a first current value flowing through the neutral line, a second current value flowing through the first live line, and a third current value flowing through the second live line;

[0087] Step 304, obtaining a first voltage value between the first live wire and the neutral wire, and a second voltage value between the second live wire and the neutral wire;

[0088] Step 306, when the first current value is zero and it is detected that the second current value, the third current value, the first voltage value and the second voltage value meet corresponding fault conditions, determining that there is a zero-break fault;

[0089] Step 308: When a zero-break fault is detected, the switch device is controlled to be disconnected.

[0090] The present invention proposes a fault handling method. By running the fault handling method, in the case of a zero failure, the switch device can be controlled to disconnect to cut off the power supply to the load. In this process, by disconnecting the power supply, the safety hazard caused by the zero failure can be eliminated.

[0091] Specifically, in the event of a zero-break fault, the current flowing through the switching devices in the distribution box does not change significantly, and the switching devices cannot be disconnected in time. The zero-break fault will cause an imbalance in the voltage at both ends of the single-phase load, overvoltage and heat damage to the load, and lead to a fire. At the same time, there are also personal electric shock accidents caused by the increased voltage on the equipment casing, and the working characteristics of the load are changed, causing safety hazards in electricity use.

[0092] In the fault handling method proposed in the present invention, the distribution box can promptly control the switch device to shut down when a zero-break fault is detected, thereby reducing the risk of imbalance in the voltage at both ends of the single-phase load, overvoltage and heat damage to the load, and fire. At the same time, it can also avoid personal electric shock accidents caused by increased voltage on the equipment casing, maintain the working characteristics of the load, and ensure electricity safety.

[0093] In the above embodiment, when determining whether there is a zero-break fault, only the first current value, the second current value, the third current value, the first voltage value and the second voltage value are obtained, and the above parameters are all collected when the distribution box is operating normally, and there is no need to suspend the power supply to the load. Therefore, the zero-break fault can be detected and processed without affecting the operation of the load, thereby reducing the impact of the zero-break fault on the power supply to the load.

[0094] In some embodiments, the distribution box further includes a first current transformer, a second current transformer, and a third current transformer, wherein the first current transformer is used to detect the first current value, the second current transformer is used to detect the second current value, and the third current transformer is used to detect the third current value.

[0095] In some embodiments, the distribution box further includes a first voltage acquisition module and a second voltage acquisition module, wherein the first voltage acquisition module is used to acquire the first voltage value, and the second voltage acquisition module is used to acquire the second voltage value.

[0096] In some embodiments, household meters can be integrated into the distribution box according to actual usage needs.

[0097] In some embodiments, the access line can be understood as a line connected from the mains terminal to the distribution box.

[0098] Among them, a household meter can also be set in the access line, so as to realize the measurement of electric energy by using the household meter.

[0099] In the above embodiment, if the first current value is detected to be zero, it is considered that a zero-break fault may exist. At this time, the first current value, the second current value, the third current value, the first voltage value and the second voltage value are compared with the corresponding fault conditions to determine whether the corresponding fault conditions are met. If the corresponding fault conditions are met, it is considered that a zero-break fault exists.

[0100] In this process, the zero failure fault can be accurately identified, and then in the event of a zero failure fault, the switch device can be cut off in time to ensure the power safety of the load.

[0101] In some embodiments, optionally, the zero-break fault includes a zero-line circuit break fault in the distribution box. When the first live wire and the second live wire output power at the same time, and the first current value is zero, and the second current value, the third current value, the first voltage value, and the second voltage value are detected to meet the corresponding fault conditions, it is determined that there is a zero-break fault, specifically including: based on the first current value being zero, the second current value and the third current value being equal and not zero, and the first voltage value or the second voltage value being not equal to the first voltage threshold, it is determined that there is a zero-line circuit break fault in the distribution box; wherein the first voltage threshold is the single-phase rated AC voltage.

[0102] In this embodiment, when the first live wire and the second live wire output power at the same time, if the second current value and the third current value are not zero and are equal, there are two situations.

[0103] Specifically, the first case is a two-phase load balance state, in which the current value flowing through the first live wire is the same as the current value flowing through the second live wire, but the phases of the current values ​​are opposite. In this case, the current value flowing through the neutral line will be zero.

[0104] At this time, whether there is a two-phase load balance state can be further determined by the first voltage value and the second voltage value. If the first voltage value and the second voltage value are both the first voltage threshold, it is considered that there is a two-phase load balance state.

[0105] On the contrary, if the first voltage value or the second voltage value is not the first voltage threshold, there is a neutral line circuit breaker fault in the distribution box.

[0106] In this process, whether there is a neutral line circuit break fault in the distribution box can be specifically judged based on the current value and voltage value, so as to improve the accuracy of judging the neutral line circuit break fault in the distribution box.

[0107] In some embodiments, the first voltage threshold is a single-phase rated AC voltage.

[0108] In some technical aspects, the single-phase rated AC voltage is a North American residential single-phase rated AC voltage.

[0109] Specifically, the North American residential single-phase rated AC voltage is 120 volts.

[0110] In addition, when the first voltage value or the second voltage value is not the first voltage threshold, that is, when there is a neutral line circuit fault in the distribution box, the switch device is controlled to disconnect so as to eliminate the situation where the single-phase load side voltage exceeds the first voltage threshold, thereby avoiding load overvoltage, long-term operation causing load heating and electrical fires, thereby improving electricity safety.

[0111] Specifically, Figure 4 As shown, the first step: the first current value IPEN=0A is detected for the zero-break fault in the distribution box, then there is a possibility of zero-break; the second step: when the first live wire L1 and the second live wire L2 load supply power to the load, now by detecting the second current value IL1=third current value IL2≠0, there are two possibilities below: the first two-phase load balance state and the second zero-break fault, the third step: by judging the first voltage value U1N=first voltage threshold ULN, the second voltage value U2N=first voltage threshold ULN, if it satisfies the two-phase load balance state, it is a normal state, if not satisfied, proceed to the fourth step of judgment, the first voltage value U1N≠first voltage threshold ULN or the second voltage value U2N≠first voltage threshold ULN meets, then it is a zero-line circuit breaker fault in the distribution box.

[0112] Among them, the PE wire is also the grounding wire.

[0113] In some embodiments, optionally, the distribution box also includes a communication module, and the fault handling method also includes: when a neutral line circuit break fault is detected in the distribution box, sending a first alarm message to the gateway through the communication module; wherein, when the gateway receives the first alarm message, it sends an alarm message corresponding to the first alarm message to the user terminal.

[0114] In this embodiment, a communication module is set up so that the first alarm information can be sent to the gateway by using the communication module, so that the gateway can notify the user terminal that there is a neutral wire circuit break fault in the distribution box, so that the user can promptly maintain the existing neutral wire circuit break fault in the distribution box, thereby minimizing the impact of the neutral wire circuit break fault in the distribution box on the load power consumption.

[0115] In some embodiments, optionally, the communication module can be connected by wire or by wireless, and the specific connection method will not be described in detail here.

[0116] In some embodiments, optionally, the alarm information sent by the gateway to the user terminal may be the first alarm information.

[0117] Exemplarily, the first alarm information may be "there is a neutral line circuit break fault in the distribution box", and the alarm information sent by the gateway to the user terminal may be "there is a neutral line circuit break fault in the distribution box".

[0118] In some embodiments, optionally, the alarm information sent by the gateway to the user terminal may be alarm information generated based on the first alarm information.

[0119] Exemplarily, the first alarm information may be "there is a neutral line circuit break fault in the distribution box", and the alarm information sent by the gateway to the user terminal may be "neutral line circuit break fault".

[0120] In some embodiments, optionally, the zero-break fault includes a PEN line open circuit fault. When the first current value is zero and it is detected that the second current value, the third current value, the first voltage value, and the second voltage value meet the corresponding fault conditions, it is determined that there is a zero-break fault, specifically including: when the first live wire and the second live wire output power at the same time, based on the first current value being zero, the second current value and the third current value being unequal and not zero, and the first voltage value or the second voltage value being not equal to the first voltage threshold, it is determined that there is a PEN line open circuit fault; when one phase of the first live wire and the second live wire outputs power, based on the first current value being zero, the second current value being zero, the third current value being not zero, and the first voltage value being greater than the first voltage threshold, it is determined that there is a PEN line open circuit fault; In the case of one-phase output power supply in the first live wire and the second live wire, based on the first current value being zero, the second current value being zero, the third current value being not zero, and the second voltage value being less than the first voltage threshold, it is determined that there is a PEN line circuit fault; in the case of one-phase output power supply in the first live wire and the second live wire, based on the first current value being zero, the second current value being not zero, the third current value being zero, and the first voltage value being less than the first voltage threshold, it is determined that there is a PEN line circuit fault; in the case of one-phase output power supply in the first live wire and the second live wire, based on the first current value being zero, the second current value being not zero, the third current value being zero, and the second voltage value being greater than the first voltage threshold, it is determined that there is a PEN line circuit fault; wherein the first voltage threshold is the single-phase rated AC voltage.

[0121] In some embodiments, the single-phase rated AC voltage is a North American residential single-phase rated AC voltage.

[0122] Specifically, the North American residential single-phase rated AC voltage is 120 volts.

[0123] In this embodiment, for a PEN line disconnection fault, there is no interference in the two-phase load balance state, and therefore, it can be divided into two cases according to the simultaneous output power supply of the first live wire and the second live wire and the single-phase output power supply.

[0124] Specifically, in the case where the first live wire and the second live wire output power at the same time, current will flow on the first live wire and the second live wire at the same time. At this time, neither the second current value nor the third current value is zero. At this time, if the first voltage value or the second voltage value is not equal to the first voltage threshold, it can be determined that there is a PEN line circuit breaker fault.

[0125] In the case where only one-phase output power supply is provided in the first live wire and the second live wire, one of the second current value and the third current value will be zero, and the other will not be zero. Specifically, in the case where one-phase output power supply is provided in the first live wire and the second live wire, based on the first current value being zero, the second current value being zero, the third current value being non-zero, and the first voltage value being greater than the first voltage threshold, it is determined that there is a PEN line circuit break fault; in the case where one-phase output power supply is provided in the first live wire and the second live wire, based on the first current value being zero, the second current value being zero, the third current value being non-zero, and the second voltage value being less than the first voltage threshold, it is determined that there is a PEN line circuit break fault; in the case where one-phase output power supply is provided in the first live wire and the second live wire, based on the first current value being zero, the second current value being non-zero, the third current value being zero, and the first voltage value being less than the first voltage threshold, it is determined that there is a PEN line circuit break fault;

[0126] In the above embodiment, classification can be performed according to the output power supply conditions of the first live wire and the second live wire, and whether there is a PEN line circuit breaker fault can be determined according to the classification result.

[0127] In this process, the PEN line circuit breaker fault can be accurately determined, thereby improving power safety.

[0128] Specifically, Figure 5 As shown, the first step: when the zero-break fault is detected, the first current value IPEN=0A, then there is a possibility of zero-break; the second step: when the first live wire L1 and the second live wire L2 supply power to the load, the second current value IL1≠0A and the third current value IL2≠0A (excluding the case where the second current value IL1=the third current value IL2≠0A) are detected, and the third step is performed: the first voltage value U1N≠the first voltage threshold ULN or the second voltage value U2N≠the first voltage threshold ULN is satisfied, then it is a PEN line circuit breaker fault, that is, a PEN break fault.

[0129] For example, in the first step: the first current value IPEN=0A is detected for the zero-break fault, which means that there is a possibility of zero-break; in the second step: when a phase load is powered in the first live wire L1 or the second live wire L2, by detecting the second current value IL1≠0A, the third current value IL2=0A or the second current value IL1=0A, the third current value IL2≠0A is satisfied, and the third step is performed: the first voltage value U1N<first voltage threshold ULN; or the second voltage value U2N>first voltage threshold ULN; or the first voltage value U1N>first voltage threshold ULN; or the second voltage value U2N<first voltage threshold ULN is satisfied, which means that the PEN line is open circuit fault, that is, PEN break fault.

[0130] In some embodiments, optionally, the distribution box also includes a communication module, and the fault handling method also includes: when a PEN line circuit break fault is detected, sending a second alarm message to the gateway through the communication module; wherein, when the gateway receives the second alarm message, it sends an alarm message corresponding to the second alarm message to the user terminal.

[0131] In this embodiment, a communication module is set up so that the second alarm information can be sent to the gateway by using the communication module, so that the gateway can notify the user terminal that there is a PEN line circuit break fault in the distribution box, so that the user can maintain the existing PEN line circuit break fault in time, thereby minimizing the impact of the PEN line circuit break fault on load power consumption.

[0132] In some embodiments, optionally, the communication module can be connected by wire or by wireless, and the specific connection method will not be described in detail here.

[0133] In some embodiments, optionally, the alarm information sent by the gateway to the user terminal may be second alarm information.

[0134] Exemplarily, the second alarm information may be "a PEN line circuit break fault exists", and the alarm information sent by the gateway to the user terminal may be "a PEN line circuit break fault exists".

[0135] In some embodiments, optionally, the alarm information sent by the gateway to the user terminal may be alarm information generated based on the second alarm information.

[0136] Exemplarily, the second alarm information may be "there is a PEN line circuit break fault", and the alarm information sent by the gateway to the user terminal may be "zero break fault".

[0137] In one embodiment, if Figure 6As shown, the present invention provides a fault handling device 600, which is used for a distribution box. The distribution box includes a switch device and a neutral line. The neutral point of the neutral line is grounded. The input end of the switch device is used to connect to the first live line and the second live line in the access line, and the output end of the switch device is used to connect to the load. The neutral line is respectively connected to the load and the PEN line in the access line. The fault handling device 600 includes: a first acquisition unit 602, which is used to acquire a first current value flowing through the neutral line, a second current value flowing through the first live line, and a third current value flowing through the second live line; a second acquisition unit 604, which is used to acquire a first voltage value between the first live line and the neutral line, and a second voltage value between the second live line and the neutral line; a detection unit 606, which is used to determine that there is a zero-break fault when the first current value is zero and the second current value, the third current value, the first voltage value, and the second voltage value are detected to meet the corresponding fault conditions; a control unit 608, which is used to control the switch device to disconnect when a zero-break fault is detected.

[0138] The present invention proposes a fault handling device 600, which can control the switch device to disconnect in the case of a zero failure to cut off the power supply to the load. In this process, by disconnecting the power supply, the safety hazard caused by the zero failure can be eliminated.

[0139] Specifically, in the event of a zero-break fault, the current flowing through the switching devices in the distribution box does not change significantly, and the switching devices cannot be disconnected in time. The zero-break fault will cause an imbalance in the voltage at both ends of the single-phase load, overvoltage and heat damage to the load, and lead to a fire. At the same time, there are also personal electric shock accidents caused by the increased voltage on the equipment casing, and the working characteristics of the load are changed, causing safety hazards in electricity use.

[0140] In the fault handling method proposed in the present invention, the distribution box can promptly control the switch device to shut down when a zero-break fault is detected, thereby reducing the risk of imbalance in the voltage at both ends of the single-phase load, overvoltage and heat damage to the load, and fire. At the same time, it can also avoid personal electric shock accidents caused by increased voltage on the equipment casing, maintain the working characteristics of the load, and ensure electricity safety.

[0141] In the above embodiment, when determining whether there is a zero-break fault, only the first current value, the second current value, the third current value, the first voltage value and the second voltage value are obtained, and the above parameters are all collected when the distribution box is operating normally, and there is no need to suspend the power supply to the load. Therefore, the zero-break fault can be detected and processed without affecting the operation of the load, thereby reducing the impact of the zero-break fault on the power supply to the load.

[0142] In some embodiments, the distribution box further includes a first current transformer, a second current transformer, and a third current transformer, wherein the first current transformer is used to detect the first current value, the second current transformer is used to detect the second current value, and the third current transformer is used to detect the third current value.

[0143] In some embodiments, the distribution box further includes a first voltage acquisition module and a second voltage acquisition module, wherein the first voltage acquisition module is used to acquire the first voltage value, and the second voltage acquisition module is used to acquire the second voltage value.

[0144] In some embodiments, household meters can be integrated into the distribution box according to actual usage needs.

[0145] In some embodiments, the access line can be understood as a line connected from the mains terminal to the distribution box.

[0146] Among them, a household meter can also be set in the access line, so as to realize the measurement of electric energy by using the household meter.

[0147] In the above embodiment, if the first current value is detected to be zero, it is considered that a zero-break fault may exist. At this time, the first current value, the second current value, the third current value, the first voltage value and the second voltage value are compared with the corresponding fault conditions to determine whether the corresponding fault conditions are met. If the corresponding fault conditions are met, it is considered that a zero-break fault exists.

[0148] In this process, the zero failure fault can be accurately identified, and then in the event of a zero failure fault, the switch device can be cut off in time to ensure the power safety of the load.

[0149] In some embodiments, optionally, the zero-line fault includes a zero-line circuit break fault in the distribution box. When the first live wire and the second live wire output power at the same time, the detection unit 606 is specifically used to: determine the existence of a zero-line circuit break fault in the distribution box based on the first current value being zero, the second current value and the third current value being equal and not zero, and the first voltage value or the second voltage value being not equal to the first voltage threshold; wherein the first voltage threshold is the single-phase rated AC voltage.

[0150] In this embodiment, when the first live wire and the second live wire output power at the same time, if the second current value and the third current value are not zero and are equal, there are two situations.

[0151] Specifically, the first case is a two-phase load balance state, in which the current value flowing through the first live wire is the same as the current value flowing through the second live wire, but the phases of the current values ​​are opposite. In this case, the current value flowing through the neutral line will be zero.

[0152] At this time, whether there is a two-phase load balance state can be further determined by the first voltage value and the second voltage value. If the first voltage value and the second voltage value are both the first voltage threshold, it is considered that there is a two-phase load balance state.

[0153] On the contrary, if the first voltage value or the second voltage value is not the first voltage threshold, there is a neutral line circuit breaker fault in the distribution box.

[0154] In this process, whether there is a neutral line circuit break fault in the distribution box can be specifically judged based on the current value and voltage value, so as to improve the accuracy of judging the neutral line circuit break fault in the distribution box.

[0155] In some embodiments, the single-phase rated AC voltage is a North American residential single-phase rated AC voltage.

[0156] Specifically, the North American residential single-phase rated AC voltage is 120 volts.

[0157] In addition, when the first voltage value or the second voltage value is not the first voltage threshold, that is, when there is a neutral line circuit fault in the distribution box, the switch device is controlled to disconnect so as to eliminate the situation where the single-phase load side voltage exceeds the first voltage threshold, thereby avoiding load overvoltage, long-term operation causing load heating and electrical fires, thereby improving electricity safety.

[0158] In some embodiments, optionally, the distribution box also includes a communication module, and the control unit 608 is also used to: when a neutral line circuit break fault is detected in the distribution box, send a first alarm message to the gateway through the communication module; wherein, when the gateway receives the first alarm message, it sends an alarm message corresponding to the first alarm message to the user terminal.

[0159] In this embodiment, a communication module is set up so that the first alarm information can be sent to the gateway by using the communication module, so that the gateway can notify the user terminal that there is a neutral wire circuit break fault in the distribution box, so that the user can promptly maintain the existing neutral wire circuit break fault in the distribution box, thereby minimizing the impact of the neutral wire circuit break fault in the distribution box on the load power consumption.

[0160] In some embodiments, optionally, the communication module can be connected by wire or by wireless, and the specific connection method will not be described in detail here.

[0161] In some embodiments, optionally, the alarm information sent by the gateway to the user terminal may be the first alarm information.

[0162] Exemplarily, the first alarm information may be "there is a neutral line circuit break fault in the distribution box", and the alarm information sent by the gateway to the user terminal may be "there is a neutral line circuit break fault in the distribution box".

[0163] In some embodiments, optionally, the alarm information sent by the gateway to the user terminal may be alarm information generated based on the first alarm information.

[0164] Exemplarily, the first alarm information may be "there is a neutral line circuit break fault in the distribution box", and the alarm information sent by the gateway to the user terminal may be "neutral line circuit break fault".

[0165] In some embodiments, optionally, the zero-break fault includes a PEN line circuit-breaking fault, and the detection unit 606 is specifically used to: when the first live wire and the second live wire output power at the same time, based on the first current value being zero, the second current value and the third current value being not equal and not zero, and the first voltage value or the second voltage value being not equal to the first voltage threshold, determine that there is a PEN line circuit-breaking fault; when one-phase output power is supplied in the first live wire and the second live wire, based on the first current value being zero, the second current value being zero, the third current value being not zero, and the first voltage value being greater than the first voltage threshold, determine that there is a PEN line circuit-breaking fault; when one-phase output power is supplied in the first live wire and the second live wire, based on When the first current value is zero, the second current value is zero, the third current value is not zero, and the second voltage value is less than the first voltage threshold, it is determined that there is a PEN line circuit fault; when one-phase output power supply is provided in the first live wire and the second live wire, based on the first current value being zero, the second current value being not zero, the third current value being zero, and the first voltage value being less than the first voltage threshold, it is determined that there is a PEN line circuit fault; when one-phase output power supply is provided in the first live wire and the second live wire, based on the first current value being zero, the second current value being not zero, the third current value being zero, and the second voltage value being greater than the first voltage threshold, it is determined that there is a PEN line circuit fault; wherein the first voltage threshold is the single-phase rated AC voltage.

[0166] In this embodiment, for a PEN line disconnection fault, there is no interference in the two-phase load balance state, and therefore, it can be divided into two cases according to the simultaneous output power supply of the first live wire and the second live wire and the single-phase output power supply.

[0167] Specifically, in the case where the first live wire and the second live wire output power at the same time, current will flow on the first live wire and the second live wire at the same time. At this time, neither the second current value nor the third current value is zero. At this time, if the first voltage value or the second voltage value is not equal to the first voltage threshold, it can be determined that there is a PEN line circuit breaker fault.

[0168] In the case where only one-phase output power supply is provided in the first live wire and the second live wire, one of the second current value and the third current value will be zero, and the other will not be zero. Specifically, in the case where one-phase output power supply is provided in the first live wire and the second live wire, based on the first current value being zero, the second current value being zero, the third current value being non-zero, and the first voltage value being greater than the first voltage threshold, it is determined that there is a PEN line circuit break fault; in the case where one-phase output power supply is provided in the first live wire and the second live wire, based on the first current value being zero, the second current value being zero, the third current value being non-zero, and the second voltage value being less than the first voltage threshold, it is determined that there is a PEN line circuit break fault; in the case where one-phase output power supply is provided in the first live wire and the second live wire, based on the first current value being zero, the second current value being non-zero, the third current value being zero, and the first voltage value being less than the first voltage threshold, it is determined that there is a PEN line circuit break fault;

[0169] In this process, the PEN line circuit breaker fault can be accurately determined, thereby improving power safety.

[0170] In some embodiments, the single-phase rated AC voltage is a North American residential single-phase rated AC voltage.

[0171] Specifically, the North American residential single-phase rated AC voltage is 120 volts.

[0172] In some embodiments, optionally, the distribution box also includes a communication module, and the control unit 608 is also used to: when a PEN line circuit break fault is detected, send a second alarm message to the gateway through the communication module; wherein, when the gateway receives the second alarm message, it sends an alarm message corresponding to the second alarm message to the user terminal.

[0173] In this embodiment, a communication module is set up so that the second alarm information can be sent to the gateway by using the communication module, so that the gateway can notify the user terminal that there is a PEN line circuit break fault in the distribution box, so that the user can maintain the existing PEN line circuit break fault in time, thereby minimizing the impact of the PEN line circuit break fault on load power consumption.

[0174] In some embodiments, optionally, the communication module can be connected by wire or by wireless, and the specific connection method will not be described in detail here.

[0175] In some embodiments, optionally, the alarm information sent by the gateway to the user terminal may be second alarm information.

[0176] Exemplarily, the second alarm information may be "a PEN line circuit break fault exists", and the alarm information sent by the gateway to the user terminal may be "a PEN line circuit break fault exists".

[0177] In some embodiments, optionally, the alarm information sent by the gateway to the user terminal may be alarm information generated based on the second alarm information.

[0178] Exemplarily, the second alarm information may be "there is a PEN line circuit break fault", and the alarm information sent by the gateway to the user terminal may be "zero break fault".

[0179] In one embodiment, if Figure 7 As shown, the present invention provides a fault handling device 700, including a processor 702 and a memory 704, wherein the memory 704 stores programs or instructions that can be executed on the processor 702, and when the programs or instructions are executed by the processor, the steps of any of the above-mentioned fault handling methods are implemented.

[0180] Among them, the memory 704 can be used to store software programs and various data. The memory 704 mainly includes a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area can store an operating system, an application program or instruction required for at least one function (such as a sound playback function, an image playback function, etc.), etc. In addition, the memory 704 may include a volatile memory or a non-volatile memory, or the memory may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDRSDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM) and a direct memory bus random access memory (DRRAM). The memory in the embodiments of the present application includes but is not limited to these and any other suitable types of memory.

[0181] In one embodiment, the present invention provides a readable storage medium, on which a program or instruction is stored, and when the program or instruction is executed by a processor, the steps of any of the above-mentioned fault handling methods are implemented.

[0182] In one of the embodiments, the present invention provides a distribution box, comprising: any one of the above-mentioned fault handling devices; and / or the above-mentioned readable storage medium.

[0183] In one embodiment, if Figure 4 , Figure 5 and Figure 8As shown, the present invention provides a distribution box 400, including: a switch device K, the input end of the switch device K is used to connect to the first live wire L1 and the second live wire L2 in the access line, and the output end of the switch device K is used to connect to the load; a neutral line N, the neutral line N is respectively connected to the load and the PEN line in the access line; an AC acquisition module 404, used to collect a first current value flowing through the neutral line N, a second current value flowing through the first live wire L1 and a third current value flowing through the second live wire L2; and to collect a first voltage value between the first live wire L1 and the neutral line N, and a second voltage value between the second live wire L2 and the neutral line N; a controller 406, respectively connected to the AC acquisition module 404 and the switch device K, for executing the steps of the fault handling method as any one of the above.

[0184] In this embodiment, the present invention provides a distribution box 400, which can cut off the power supply to the load by controlling the switch device K to disconnect when there is a zero failure. In this process, by disconnecting the power supply, the safety hazard caused by the zero failure can be eliminated.

[0185] Specifically, in the event of a zero-break fault, the current flowing through the switch device K in the distribution box 400 does not change significantly, and the switch device K cannot be disconnected in time. The zero-break fault will cause an imbalance in the voltage at both ends of the single-phase load, overvoltage and heat damage to the load, and cause a fire. At the same time, there is also the possibility of personal electric shock accidents caused by the increased voltage on the equipment casing, and the working characteristics of the load are changed, causing safety hazards in electricity use.

[0186] In the distribution box 400 proposed in the present invention, when a zero failure is detected, the distribution box 400 can promptly control the switch device K to shut down, thereby reducing the risk of imbalance at both ends of the single-phase load voltage, overvoltage and heat damage of the load and fire. At the same time, it can also avoid personal electric shock accidents caused by increased voltage on the equipment casing, maintain the working characteristics of the load, and ensure electricity safety.

[0187] In the above embodiment, when determining whether there is a zero-break fault, only the first current value, the second current value, the third current value, the first voltage value and the second voltage value are obtained, and the above parameters are all collected when the distribution box 400 is working normally, and there is no need to suspend the power supply to the load. Therefore, the zero-break fault can be detected and processed without affecting the operation of the load, thereby reducing the impact of the zero-break fault on the power supply to the load.

[0188] In some embodiments, the distribution box 400 further includes a first current transformer CTL1, a second current transformer CTL2, and a third current transformer CTL3, wherein the first current transformer CTL1 is used to detect the first current value, the second current transformer CTL2 is used to detect the second current value, and the third current transformer CTL3 is used to detect the third current value.

[0189] In some embodiments, the distribution box 400 further includes a first voltage acquisition module V1N and a second voltage acquisition module V2N, wherein the first voltage acquisition module V1N is used to acquire the first voltage value, and the second voltage acquisition module V2N is used to acquire the second voltage value.

[0190] In some embodiments, optionally, the distribution box 400 also includes: a signal control output module 408, the input end of the signal control output module 408 is connected to the controller 406, and the output end of the signal control output module 408 is connected to the switch device K; a signal feedback acquisition module 410, connected to the controller 406, and used to collect the opening and closing status of the switch device K; wherein, when the controller 406 detects a zero-break fault, the control signal control output module 408 sends a control signal to the switch device K to control the switch device K to disconnect; and the control signal feedback acquisition module 410 detects the opening and closing status of the switch device K.

[0191] In this embodiment, a signal control output module 408 is provided so that the signal control output module 408 can be used to control the switch device K. At the same time, a signal feedback acquisition module 410 is provided so that the signal feedback acquisition module 410 can be used to collect the open and closed states of the switch device K. When the signal control output module 408 is used to control the switch device K to be disconnected, the signal feedback acquisition module 410 is used to verify the state of the switch device K, thereby ensuring the stable operation of the switch device K, thereby ensuring the reliability of the distribution box 400.

[0192] In some embodiments, the switching device K may be a relay.

[0193] In some embodiments, optionally, the distribution box 400 further includes: a power supply module 412 connected to the switch device K, the AC acquisition module 404, the controller 406, the signal control output module 408 and the signal feedback acquisition module 410 for providing power supply.

[0194] In this embodiment, a power supply module 412 is provided so that the power supply module 412 can be used to centrally power the switch device K, the AC acquisition module 404, the controller 406, the signal control output module 408 and the signal feedback acquisition module 410. In this process, there is no need to provide a power supply for each module separately, thereby reducing the complexity of the distribution box 400 and reducing the material cost and assembly cost of the distribution box 400.

[0195] The power module 412 is also used to supply power to the communication module 402 .

[0196] In one embodiment, if Fig. 9As shown, when the switching device is a relay, the fault handling method includes:

[0197] Step 902, IPEN = 0, if the judgment result is yes, go to step 904, if the judgment result is no, end;

[0198] Step 904, IL1 = IL2 = 0, if the judgment result is yes, go to step 906, if the judgment result is no, go to step 908;

[0199] Step 906, the system is disconnected;

[0200] Step 908, IL1 = IL2 ≠ 0, if the judgment result is yes, go to step 910, if the judgment result is no, go to step 912;

[0201] Step 910, U1N=ULN, U2N=ULN, if the judgment result is yes, execute step 914, if the judgment result is no, execute step 916;

[0202] Step 912, IL1≠0, IL2≠0, if the judgment result is yes, execute step 918, if the judgment result is no, execute step 920;

[0203] Step 914, two-phase balance;

[0204] Step 916, U1N≠ULN, or U2N≠ULN, if the judgment result is yes, execute step 922, if the judgment result is no, execute step 916;

[0205] Step 918, U1N≠ULN, or U2N≠ULN, if the judgment result is yes, execute step 924, if the judgment result is no, execute step 918;

[0206] Step 920, IL1≠0, IL2=0, if the judgment result is yes, go to step 926, if the judgment result is no, go to step 928;

[0207] Step 922, disconnect the N line in the distribution box;

[0208] Step 924, disconnect the PEN line;

[0209] Step 926, U1N<ULN, or U2N>ULN, if the judgment result is yes, execute step 924, if the judgment result is no, execute step 926;

[0210] Step 928, IL1 = 0, IL2 ≠ 0, if the judgment result is yes, execute step 930, if the judgment result is no, execute step 928;

[0211] Step 930, U1N>ULN, or U2N<ULN, if the judgment result is yes, execute step 924, if the judgment result is no, execute step 930;

[0212] Step 932, controlling the disconnection of the relay;

[0213] Step 934, relay auxiliary contact signal feedback;

[0214] Step 936, signal feedback acquisition module;

[0215] Step 938: The communication module sends the message to the upper-level gateway.

[0216] The term "first" or "second" in the specification and claims of the present application may include one or more of the features explicitly or implicitly. In the textual description of the present invention, unless otherwise specified, "plurality" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the objects connected before and after are in an "or" relationship.

[0217] In the text description of the present invention, it is understood that, except for explicit provisions and limitations, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be fixed connection, detachable connection, or integral connection; it can be mechanical structure connection or electrical connection; it can be direct connection between the two, or indirect connection between the two through an intermediate medium, or it can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0218] In the claims, specification and drawings of the present invention, the description of the terms "one embodiment", "some embodiments", "specific embodiments" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In the claims, specification and drawings of the present invention, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0219] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fault handling method for a distribution box, characterized in that: The distribution box includes a switch device and a neutral line, the neutral point of the neutral line is grounded, the input end of the switch device is used to connect with the first live line and the second live line in the access line, the output end of the switch device is used to connect with the load, the neutral line is respectively connected with the load and the PEN line in the access line, and the fault handling method includes: Acquire a first current value flowing through the neutral line, a second current value flowing through the first live line, and a third current value flowing through the second live line; Acquire a first voltage value between the first live wire and the neutral wire, and a second voltage value between the second live wire and the neutral wire; When the first current value is zero and it is detected that the second current value, the third current value, the first voltage value and the second voltage value meet corresponding fault conditions, determining that there is a zero-break fault; When a zero-break fault is detected, the switch device is controlled to be disconnected.

2. The fault handling method according to claim 1, characterized in that: The zero-break fault includes a zero-line circuit breaker fault in the distribution box. When the first live wire and the second live wire output power at the same time, when the first current value is zero and it is detected that the second current value, the third current value, the first voltage value, and the second voltage value meet corresponding fault conditions, determining that there is a zero-break fault specifically includes: Based on the fact that the first current value is zero, the second current value and the third current value are equal and not zero, and the first voltage value or the second voltage value is not equal to the first voltage threshold, it is determined that there is a neutral line circuit breaker fault in the distribution box; Wherein, the first voltage threshold is the single-phase rated AC voltage.

3. The fault handling method according to claim 2, characterized in that: The distribution box further includes a communication module, and the fault handling method further includes: When a zero line circuit breaker fault is detected in the distribution box, a first alarm message is sent to the gateway through the communication module; When the gateway receives the first alarm information, it sends alarm information corresponding to the first alarm information to the user terminal.

4. The fault handling method according to claim 1, characterized in that: The zero-break fault includes a PEN line open circuit fault, and when the first current value is zero and it is detected that the second current value, the third current value, the first voltage value, and the second voltage value meet corresponding fault conditions, determining that there is a zero-break fault specifically includes: In the case where the first live wire and the second live wire output power at the same time, based on the first current value being zero, the second current value and the third current value being unequal and non-zero, and the first voltage value or the second voltage value being not equal to a first voltage threshold, determining that there is a PEN line open circuit fault; In the case where one phase of the first live wire and the second live wire is output for power supply, based on the first current value being zero, the second current value being zero, the third current value being non-zero, and the first voltage value being greater than a first voltage threshold, determining that there is a PEN line open circuit fault; In the case where one phase of the first live wire and the second live wire is output for power supply, based on the first current value being zero, the second current value being zero, the third current value being non-zero, and the second voltage value being less than a first voltage threshold, determining that there is a PEN line open circuit fault; In the case where one phase of the first live wire and the second live wire is output for power supply, based on the first current value being zero, the second current value being non-zero, the third current value being zero, and the first voltage value being less than a first voltage threshold, determining that there is a PEN line open circuit fault; In the case where one phase of the first live wire and the second live wire is output for power supply, based on the first current value being zero, the second current value being non-zero, the third current value being zero, and the second voltage value being greater than a first voltage threshold, determining that there is a PEN line open circuit fault; Wherein, the first voltage threshold is the single-phase rated AC voltage.

5. The fault handling method according to claim 4, characterized in that: The distribution box further includes a communication module, and the fault handling method further includes: When a PEN line disconnection fault is detected, sending a second alarm message to the gateway through the communication module; When the gateway receives the second alarm information, it sends alarm information corresponding to the second alarm information to the user terminal.

6. A fault handling device, used in a distribution box, characterized in that: The distribution box includes a switch device and a neutral line, the neutral point of the neutral line is grounded, the input end of the switch device is used to connect with the first live line and the second live line in the access line, the output end of the switch device is used to connect with the load, the neutral line is respectively connected with the load and the PEN line in the access line, and the fault handling device includes: A first acquisition unit, configured to acquire a first current value flowing through the neutral line, a second current value flowing through the first live line, and a third current value flowing through the second live line; A second acquiring unit, configured to acquire a first voltage value between the first live wire and the neutral wire, and a second voltage value between the second live wire and the neutral wire; a detection unit, configured to determine that a zero-break fault exists when the first current value is zero and it is detected that the second current value, the third current value, the first voltage value, and the second voltage value meet corresponding fault conditions; The control unit is used to control the switch device to disconnect when a zero failure is detected.

7. A fault handling device, characterized in that: The method comprises a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the fault handling method as claimed in any one of claims 1 to 5 are implemented.

8. A readable storage medium, characterized in that: The readable storage medium stores a program or instruction, and when the program or instruction is executed by the processor, the steps of the fault handling method according to any one of claims 1 to 5 are implemented.

9. A distribution box, characterized in that: include: The fault handling device according to claim 6 or 7; and / or The readable storage medium as claimed in claim 8.

10. A distribution box, characterized in that: include: A switch device, wherein an input end of the switch device is used to connect to a first live wire and a second live wire in an access line, and an output end of the switch device is used to connect to a load; A neutral line, the neutral line being connected to the load and a PEN line in the access line respectively; an AC acquisition module, used for acquiring a first current value flowing through the neutral line, a second current value flowing through the first live line, and a third current value flowing through the second live line; and collecting a first voltage value between the first live wire and the neutral wire, and a second voltage value between the second live wire and the neutral wire; A controller is connected to the AC acquisition module and the switch device respectively, and is used to execute the steps of the fault handling method according to any one of claims 1 to 5.

11. The distribution box according to claim 10, characterized in that: The distribution box also includes: A signal control output module, wherein an input end of the signal control output module is connected to the controller, and an output end of the signal control output module is connected to the switch device; A signal feedback acquisition module, connected to the controller, for acquiring the on / off status of the switch device; Wherein, when a zero failure is detected, the controller controls the signal control output module to send a control signal to the switch device to control the switch device to disconnect; and The signal feedback acquisition module is controlled to detect the on / off state of the switch device.

12. The distribution box according to claim 11, characterized in that: The distribution box also includes: A power supply module is connected to the switch device, the AC acquisition module, the controller, the signal control output module and the signal feedback acquisition module, and is used to provide power supply.

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