Detection method and device of grounding protection system

Abstract

The invention discloses a ground protection system detection method and device, and belongs to the technical field of ground protection system detection. The detection method of the ground protection system comprises the following steps: acquiring an initial input electric signal of the charging pile; under the condition that the initial input electric signal is smaller than the electric signal corresponding to the power grid, the output power of the charging pile is adjusted; acquiring a first input electric signal of the charging pile; and based on the initial input electric signal and the first input electric signal, a detection result of the grounding protection system is determined, and the detection result comprises disconnection of a protection connection null line and non-disconnection of the protection connection null line. According to the detection method of the grounding protection system, the detection accuracy of the wiring condition of the protection connection null line is improved, additional equipment is not needed, the detection cost is reduced, and the detection mode is simple and easy to operate.

Description

Technical Field

[0001] The present application belongs to the technical field of grounding protection system detection, and in particular, relates to a detection method and device for a grounding protection system. Background Art

[0002] In the case that the protective neutral line of the grounding protection system connected to the charging pile is disconnected, the leakage protection device of the charging pile may not trigger the protection action, causing the charging pile shell to be charged, resulting in an electric shock accident. In the related art, the input voltage of the charging pile is mainly compared with the grid voltage to detect whether the protective neutral line is broken. However, the above detection method is easily affected by the fluctuation of the grid voltage, making the detection result of whether the protective neutral line is broken inaccurate, affecting the charging efficiency. Summary of the invention

[0003] The present application aims to solve at least one of the technical problems existing in the related art. To this end, the present application proposes a detection method and device for a grounding protection system, which improves the accuracy of the detection of the connection condition of the protective grounding line, does not require the addition of additional equipment, reduces the detection cost, and the detection method is simple and easy to operate.

[0004] In a first aspect, the present application provides a method for detecting a grounding protection system, wherein the grounding protection system is connected to a power grid and a charging pile respectively; the method comprises:

[0005] Obtaining an initial input electrical signal of the charging pile;

[0006] When the initial input electrical signal is smaller than the electrical signal corresponding to the power grid, adjusting the output power of the charging pile;

[0007] Acquire a first input electrical signal of the charging pile;

[0008] Based on the initial input electrical signal and the first input electrical signal, a detection result of the grounding protection system is determined, the detection result comprising: whether the protective neutral line is broken or not.

[0009] According to the detection method of the grounding protection system of the present application, by determining that the initial input electrical signal is smaller than the electrical signal corresponding to the power grid, it is preliminarily determined that the protective grounding line of the grounding protection system may be broken, and the output power of the charging pile is further adjusted. The relationship between the first input electrical signal and the initial input electrical signal of the charging pile is compared again to determine the detection result of the charging pile, thereby improving the accuracy of the detection of the wiring condition of the protective grounding line. There is no need to add additional equipment, reducing the detection cost, and the detection method is simple and easy to operate.

[0010] According to the detection method of the ground protection system of the present application, determining the detection result of the ground protection system based on the initial input electrical signal and the first input electrical signal includes:

[0011] A detection result of the ground protection system is determined based on a first difference between the initial input electrical signal and the first input electrical signal and a target threshold.

[0012] According to the detection method of the ground protection system of the present application, the determining of the detection result of the ground protection system based on the first difference between the initial input electrical signal and the first input electrical signal and the target threshold value includes:

[0013] When the first difference is greater than the target threshold, determining that the protective grounding line of the grounding protection system is broken;

[0014] When the first difference is not greater than the target threshold, it is determined that the protective neutral line of the grounding protection system is not broken.

[0015] According to the detection method of the grounding protection system of the present application, after determining that the protective neutral line of the grounding protection system is not broken based on the initial input electrical signal and the first input electrical signal, the method further includes:

[0016] The output power of the charging pile is controlled to be adjusted to the output power corresponding to the charging pile before the output power of the charging pile is adjusted.

[0017] According to the detection method of the ground protection system of the present application, when the initial input electrical signal is less than the electrical signal corresponding to the power grid, adjusting the output power of the charging pile includes:

[0018] When the initial input electrical signal is smaller than the electrical signal corresponding to the power grid, the output power of the charging pile is increased or decreased.

[0019] According to the detection method of the ground protection system of the present application, when the initial input electrical signal is less than the electrical signal corresponding to the power grid, increasing the output power of the charging pile or reducing the output power of the charging pile includes:

[0020] When a second difference between the output power and the maximum output power of the charging pile is within a target power range, reducing the output power;

[0021] When the second difference between the output power and the maximum output power of the charging pile is not within the target power range, the output power is increased or decreased.

[0022] According to the detection method of the grounding protection system of the present application, the grounding protection system is a three-phase four-wire and three-phase five-wire mixed grounding protection system.

[0023] In a second aspect, the present application provides a detection device for a grounding protection system, wherein the grounding protection system is connected to a power grid and a charging pile respectively; the device comprises:

[0024] A first processing module, used to obtain an initial input electrical signal of the charging pile;

[0025] The second processing module is used to adjust the output power of the charging pile when the initial input electrical signal is smaller than the electrical signal corresponding to the power grid.

[0026] A third processing module, used to obtain a first input electrical signal of the charging pile;

[0027] The fourth processing module is used to determine the detection result of the grounding protection system based on the initial input electrical signal and the first input electrical signal, and the detection result includes: whether the protective neutral line is broken or not.

[0028] According to the detection device of the grounding protection system of the present application, by determining that the initial input electrical signal is smaller than the electrical signal corresponding to the power grid, it is preliminarily determined that the protective grounding line of the grounding protection system may be broken, and the output power of the charging pile is further adjusted. The relationship between the first input electrical signal and the initial input electrical signal of the charging pile is compared again to determine the detection result of the charging pile, thereby improving the accuracy of the detection of the wiring condition of the protective grounding line. There is no need to add additional equipment, reducing the detection cost, and the detection method is simple and easy to operate.

[0029] In a third aspect, the present application provides an electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the method for detecting a grounding protection system as described in the first aspect above is implemented.

[0030] In a fourth aspect, the present application provides a non-transitory computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the detection method of the grounding protection system as described in the first aspect above is implemented.

[0031] In a fifth aspect, the present application provides a computer program product, including a computer program, which, when executed by a processor, implements the detection method of the grounding protection system as described in the first aspect above.

[0032] The above one or more technical solutions in the embodiments of the present application have at least one of the following technical effects:

[0033] By determining that the initial input electrical signal is smaller than the electrical signal corresponding to the power grid, it is preliminarily determined that the protective grounding line of the grounding protection system may be broken, and the output power of the charging pile is further adjusted. The relationship between the first input electrical signal and the initial input electrical signal of the charging pile is compared again to determine the detection result of the charging pile, thereby improving the accuracy of the detection of the wiring condition of the protective grounding line. There is no need to add additional equipment, which reduces the detection cost, and the detection method is simple and easy to operate.

[0034] Furthermore, by determining that the first difference is greater than the target threshold, it is determined that the first difference is caused by the broken protective grounding line, and the detection result is determined to be the broken protective grounding line. By determining that the first difference is not greater than the target threshold, it is determined that the first difference is caused by the grid fluctuation, and it is determined that the protective grounding line of the grounding protection system is not broken. The judgment logic is simple and easy to operate, which improves the detection accuracy, alleviates the impact of false alarms on the charging process of the charging object, and improves the user's charging experience.

[0035] Furthermore, by comparing whether the second difference between the output power and the maximum output power of the charging pile is within the target power range, a suitable adjustment method is selected based on the actual output power to improve the efficiency of power regulation, reduce the occurrence of invalid regulation, and improve the user experience.

[0036] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0038] Figure 1 It is one of the flow charts of the detection method of the ground protection system provided in the embodiment of the present application;

[0039] Figure 2 It is a schematic diagram of the principle of a detection method for a ground protection system provided in an embodiment of the present application;

[0040] Figure 3 This is a second flow chart of a detection method for a ground protection system provided in an embodiment of the present application;

[0041] Figure 4 is a structural schematic diagram of a detection device for a ground protection system provided in an embodiment of the present application;

[0042] Figure 5 It is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0044] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0045] In conjunction with the accompanying drawings, the detection method of the grounding protection system, the detection device of the grounding protection system, the electronic device and the readable storage medium provided in the embodiments of the present application are described in detail through specific embodiments and their application scenarios.

[0046] The detection method of the ground protection system may be applied to a terminal, and may be specifically executed by hardware or software in the terminal.

[0047] The terminal includes but is not limited to portable communication devices such as mobile phones or tablet computers. It should also be understood that in some embodiments, the terminal may not be a portable communication device, but a desktop computer.

[0048] In the following various embodiments, a terminal including a display and a touch-sensitive surface is described. However, it should be understood that the terminal may include one or more other physical user interface devices such as a physical keyboard, a mouse and a joystick.

[0049] The detection method for a grounding protection system provided in an embodiment of the present application may be executed by a grounding protection system, or may be a detection device of the grounding protection system arranged on the grounding protection system, or may be a server electrically connected (wired or wirelessly connected) to the grounding protection system, or may be a user terminal communicatively connected to the grounding protection system, including but not limited to mobile terminals and non-mobile terminals.

[0050] like Figure 1 As shown, the detection method of the ground protection system includes: step 110, step 120, step 130 and step 140.

[0051] The grounding protection system is connected to the power grid and the charging pile respectively.

[0052] Step 110: Obtaining an initial input electrical signal of the charging pile;

[0053] In this step, the initial input electrical signal is the electrical signal of the charging pile obtained for the first time during the process of starting the detection of the ground protection system.

[0054] The initial input electrical signal may be an initial input voltage, an initial input current or an initial input power.

[0055] In the actual implementation process, when the initial input electrical signal is the initial input current, the initial input voltage of the charging pile can be obtained based on the initial input current, based on the initial input current and the correlation between the initial input power and the initial input voltage.

[0056] When the initial input electrical signal is the initial input power, the initial input voltage of the charging pile can be obtained based on the initial input power and the correlation between the initial input current and the initial input voltage.

[0057] In the actual implementation process, the initial input electrical signal of the charging pile can be obtained through measuring devices such as a digital multimeter and a charging pile tester.

[0058] Of course, in the actual implementation process, the initial input electrical signal of the charging pile can also be obtained through any other feasible method, and this application does not limit it.

[0059] Step 120: When the initial input electrical signal is smaller than the electrical signal corresponding to the power grid, adjust the output power of the charging pile;

[0060] The electrical signal corresponding to the grid may be a grid voltage.

[0061] It should be noted that the normal grid voltage range has different requirements in different countries.

[0062] For example, the standard grid voltage in country A is 220V; the standard grid voltage units in country B include: 110V to 120V and 220V to 240V; the standard grid voltage in country C is 230V and 400V.

[0063] In the actual implementation process, the electrical signal corresponding to the power grid can be determined based on the location of the grounding protection system.

[0064] It should be noted that, under ideal conditions, and when the initial input electrical signal is smaller than the electrical signal corresponding to the power grid, it can be determined that the protective grounding line of the grounding protection system is broken. However, the detection of the protective grounding line through the size relationship between the initial input electrical signal and the electrical signal corresponding to the power grid is easily affected by the voltage fluctuations of the power grid, resulting in false alarms.

[0065] When the initial input electrical signal is smaller than the electrical signal corresponding to the power grid, in order to improve the detection accuracy of the protective grounding wire, the protective grounding wire can be further detected by adjusting the input power of the charging pile.

[0066] In the actual implementation process, after determining that the initial input electrical signal is smaller than the electrical signal corresponding to the power grid, the output power of the charging pile can be changed, thereby changing the charging current of the charging object connected to the charging pile. Based on the changes in the entire circuit after the output power changes, the grounding protection system is detected.

[0067] Charging objects may include: electric vehicles and batteries, etc.

[0068] Step 130: Obtain a first input electrical signal of the charging pile;

[0069] In this step, the first input electrical signal is an input electrical signal collected again after adjusting the output power of the charging pile based on the impact of the change in output power on the charging pile.

[0070] The first input electrical signal is an electrical signal of the same type as the initial input electrical signal.

[0071] When the initial input electrical signal is an initial input voltage, the first input electrical signal is a first input voltage.

[0072] When the initial input electrical signal is the initial input current, the first input electrical signal is the first input current.

[0073] When the initial input electrical signal is the initial input power, the first input electrical signal is the first input power.

[0074] The first input electrical signal and the initial input electrical signal are collected at different times.

[0075] In an actual implementation process, the value of the first input electrical signal may be the same as the value of the initial input electrical signal, or the value of the first input electrical signal may be different from the value of the initial input electrical signal.

[0076] The first input electrical signal of the charging pile can be obtained in the same way as the initial input electrical signal is obtained in step 110, and will not be described here to avoid repetition.

[0077] Step 140: Determine a detection result of the ground protection system based on the initial input electrical signal and the first input electrical signal.

[0078] In this step, the detection result is the operation status of the grounding protection system obtained by detecting the grounding protection system.

[0079] The test results include: whether the protective grounding wire is broken or not.

[0080] In the actual implementation process, the detection result of the ground protection system can be determined based on the magnitude relationship between the initial input electrical signal and the first input electrical signal.

[0081] For example, when the initial input electrical signal is greater than the first input electrical signal, it is determined that the detection result of the grounding protection system is that the protective neutral line is not broken.

[0082] For another example, when the initial input electrical signal is not greater than the first input electrical signal, it is determined that the detection result of the grounding protection system is that the protective neutral line is broken.

[0083] Of course, the initial input electrical signal and the first input electrical signal may be compared to determine the detection result in any other feasible manner, which is not limited in the present application.

[0084] like Figure 2 As shown, taking the input electrical signal as the input voltage and the electrical signal corresponding to the power grid as the power grid voltage as an example, when the grounding protection system operates normally, that is, the protective neutral line is not disconnected, the input voltage of the charging pile is equal to the power grid voltage. When the charging pile is charging the charging object, the current flowing through the L line and the N line is the same. There is no current on the PE line for the charging pile or the charging object. For example, the metal shell of the electric vehicle is always grounded, and the Vev-pe voltage is 0, which will not trigger a leakage accident.

[0085] When the protective neutral wire is broken, the input voltage of the charging pile is no longer equal to the grid voltage.

[0086] The input voltage of the charging pile can be determined based on the following formula:

[0087] V L_N =V AC -I PE *R PIPE

[0088] Among them, V L_N is the input voltage of the charging pile; V Ac is the grid voltage; I PE is the current of water pipes and gas pipes; R PIPE The resistance of water and gas pipes.

[0089] Among them, I PE=I L =I N , that is, the current flowing through the water pipe and gas pipe is equal to the current flowing through the L line and the N line, that is, I PE Equal to the actual charging current of the electric vehicle.

[0090] When the charging pile is charging the object, the current will flow through the metal pipe connected to the PE line. At this time, the current flowing through the L line and the N line is still the same, and the leakage protection device of the charging pile cannot trigger the protection action, but the Vev-pe voltage is no longer 0. If someone touches the metal shell of the electric car, an electric shock accident will occur.

[0091] During the research and development process, the inventors found that in the related technology, the input voltage of the charging pile is mainly compared with the grid voltage to detect whether the protective grounding wire is broken. However, the above detection method is easily affected by grid voltage fluctuations, making the detection result of whether the protective grounding wire is broken inaccurate, affecting the charging efficiency.

[0092] In addition, the inventors also found that in the related art, the grounding system is also tested by adding a current detection circuit between the grounding wire and the protective neutral wire of the charging pile or a dedicated protective neutral wire fault detection device at the front end of the charging pile. However, the above detection method increases the detection cost and is cumbersome to operate.

[0093] The present application obtains the initial input electrical signal of the charging pile and compares the size relationship between the initial input electrical signal and the electrical signal corresponding to the power grid, thereby preliminarily determining whether the protective grounding line of the grounding protection system is broken. When the initial input electrical signal is smaller than the electrical signal corresponding to the power grid, it is determined that the protective grounding line may be broken, thereby further adjusting the output power of the charging pile, and obtaining the input electrical signal of the charging pile again to obtain a first input electrical signal. Based on the size relationship between the initial input electrical signal and the first input electrical signal, the detection result of the charging pile is determined, thereby improving the detection accuracy. Detection can be performed on the basis of the existing structure without adding additional equipment, thereby reducing the detection cost, and the detection method is simple and easy to operate.

[0094] According to the detection method of the grounding protection system provided in the embodiment of the present application, by determining that the initial input electrical signal is smaller than the electrical signal corresponding to the power grid, it is preliminarily determined that the protective grounding line of the grounding protection system may be broken, and the output power of the charging pile is further adjusted. The relationship between the first input electrical signal and the initial input electrical signal of the charging pile is compared again to determine the detection result of the charging pile, thereby improving the accuracy of the detection of the wiring condition of the protective grounding line. There is no need to add additional equipment, reducing the detection cost, and the detection method is simple and easy to operate.

[0095] In some embodiments, step 140 may further include:

[0096] Based on a first difference between the initial input electrical signal and the first input electrical signal and a target threshold, a detection result of the ground fault protection system is determined.

[0097] In this embodiment, the first difference is a value obtained by comparing the difference between the initial input electrical signal and the first input electrical signal.

[0098] The first difference degree can be calculated by performing a difference operation or a division operation on the initial input electrical signal and the first input electrical signal.

[0099] The target threshold is a preset value for determining the magnitude of the first difference.

[0100] The specific value of the target threshold can be based on user customization or determined based on actual conditions. For example, the target threshold can be a value in the range of 10V to 20V, which is not limited in this application.

[0101] During the actual implementation process, after obtaining the initial input electrical signal and the first input electrical signal, a difference operation can be performed on the initial input electrical signal and the first input electrical signal to obtain a first difference degree, and based on the size relationship between the first difference degree and the target threshold, the detection result of the grounding protection system is determined.

[0102] It should be noted that, in the actual execution process, the initial input electrical signal may be greater than the first input electrical signal, or the initial input electrical signal may not be greater than the first input electrical signal. The first difference degree may be the absolute value of the difference obtained by performing a difference operation on the initial input electrical signal and the first input electrical signal, and comparing the absolute value of the difference with the target threshold to obtain the detection result.

[0103] According to the detection method of the grounding protection system provided in the embodiment of the present application, by determining the change of the input electrical signal of the charging pile before and after adjusting the output power of the charging pile through the first difference between the initial input electrical signal and the first input electrical signal, the first difference is compared with the target threshold value, and based on the comparison result, the detection result of the grounding protection system is determined, thereby effectively simplifying the detection process and improving the detection efficiency.

[0104] In some embodiments, determining the detection result of the ground protection system based on the first difference between the initial input electrical signal and the first input electrical signal and the target threshold value may further include:

[0105] When the first difference is greater than the target threshold, determining that the protective grounding line of the grounding protection system is broken;

[0106] When the first difference is not greater than the target threshold, it is determined that the protective neutral line of the grounding protection system is not broken.

[0107] In this embodiment, after the first difference is calculated based on the initial input electrical signal and the first input electrical signal, the magnitude relationship between the first difference and the target threshold is further compared.

[0108] When the first difference is greater than the target threshold, it is determined that the first difference is caused by the disconnection of the protective neutral line. At this time, it can be determined that the protective neutral line of the grounding protection system is disconnected.

[0109] When the first difference is not greater than the target threshold, it is determined that the first difference is caused by power grid fluctuation. At this time, it can be determined that the protective neutral line of the grounding protection system is not broken.

[0110] like Figure 3 As shown, the initial input electrical signal of the charging pile is collected, and it is determined whether the initial input electrical signal is smaller than the electrical signal corresponding to the power grid. When the initial input electrical signal is smaller than the electrical signal corresponding to the power grid, and when it is determined that the grounding protection system is a three-phase four-wire and three-phase five-wire mixed grounding protection system, the output power of the charging pile is adjusted, and the input electrical signal of the charging pile is collected again to obtain the first input electrical signal.

[0111] Compare the first difference between the first input electrical signal and the initial input electrical signal with the target threshold value, and determine that the protective grounding wire is broken when the first difference is greater than the target threshold value; and determine that the protective grounding wire is not broken when the first difference is not greater than the target threshold value.

[0112] In some embodiments, after determining that the protective grounding line of the ground protection system is broken, an alarm message can be output to promptly remind relevant staff to pay attention to the fault of the grounding protection system, and control the charging pile to stop charging the charging object and disconnect the PE line.

[0113] According to the detection method of the grounding protection system provided in the embodiment of the present application, by determining that the first difference is greater than the target threshold, it is determined that the first difference is caused by the disconnection of the protective grounding line, and the detection result is determined to be the disconnection of the protective grounding line. By determining that the first difference is not greater than the target threshold, it is determined that the first difference is caused by grid fluctuations, and it is determined that the protective grounding line of the grounding protection system is not disconnected. The judgment logic is simple and easy to operate, which improves the detection accuracy, alleviates the impact of false alarms of detection results on the charging process of the charging object, and improves the user's charging experience.

[0114] In some embodiments, the grounding protection system is a three-phase four-wire and three-phase five-wire mixed grounding protection system.

[0115] In this embodiment, it should be noted that when the grounding protection system to which the charging pile is connected is a three-phase four-wire and three-phase five-wire mixed grounding protection system, if the protective neutral wire of the grounding protection system is broken, the leakage protection device of the charging pile may not trigger the protection action, which may cause the charging pile casing or the vehicle casing to be charged, and then cause an electric shock accident.

[0116] Continue to refer Figure 3 In the actual implementation process, when it is determined that the initial input electrical signal is smaller than the electrical signal corresponding to the power grid, it can be further determined whether the grounding protection system is a three-phase four-wire and three-phase five-wire mixed grounding protection system.

[0117] The grounding protection system is a three-phase four-wire and three-phase five-wire mixed grounding protection system. The grounding protection system is detected by adjusting the output power of the charging pile.

[0118] When the grounding protection system is not a three-phase four-wire or three-phase five-wire mixed grounding protection system, the charging pile can be controlled to operate normally at the current output power.

[0119] According to the detection method of the grounding protection system provided in the embodiment of the present application, by determining the type of the grounding protection system, the usage scenario of the detection method of the grounding protection system is clarified, thereby improving the user experience.

[0120] In some embodiments, after determining that the protective neutral line of the grounding protection system is not broken based on the initial input electrical signal and the first input electrical signal, the method may further include:

[0121] The output power of the charging pile is controlled to be adjusted to the output power corresponding to the charging pile before the output power of the charging pile is adjusted.

[0122] In this embodiment, after determining that the protective neutral line of the grounding protection system is not broken based on the initial input electrical signal and the first input electrical signal, it can be determined that the initial input electrical signal is smaller than the electrical signal corresponding to the power grid due to power grid fluctuations, and the grounding protection system can operate normally. At this time, the detection of the grounding protection system can be terminated, and the output power of the charging pile can be adjusted to the output power corresponding to the charging pile before the output power of the charging pile is adjusted.

[0123] For example, after determining that the protective grounding wire of the grounding protection system is not broken, the output power of the charging pile is 20. Before adjusting the output power of the charging pile, the output power of the charging pile is 15. At this time, the output power of the charging pile can be controlled to be adjusted from 20 to 15.

[0124] According to the detection method of the grounding protection system provided in the embodiment of the present application, by determining that the protective grounding wire of the grounding protection system is not broken, and controlling the output power of the charging pile to adjust to the output power corresponding to the charging pile before adjusting the output power of the charging pile, the output power of the charging pile is restored to the running state, thereby ensuring the normal charging state of the charging pile and improving the user's charging experience.

[0125] In some embodiments, step 120 may further include:

[0126] When the initial input electrical signal is smaller than the electrical signal corresponding to the power grid, the output power of the charging pile is increased or decreased.

[0127] In this embodiment, during the actual execution process, after determining that the initial input electrical signal is smaller than the electrical signal corresponding to the power grid, the output power of the charging pile can be adjusted. The adjustment method can be to increase the output power of the charging pile or to reduce the output power of the charging pile.

[0128] For example, when the output power of the charging pile is 20, adjust the output power of the charging pile to 25.

[0129] For example, when the output power of the charging pile is 20, adjust the output power of the charging pile to 15.

[0130] For another example, the charging pile is controlled to stop charging the charging object.

[0131] During the actual implementation process, the user can choose the method to adjust the output power of the charging pile according to the actual situation.

[0132] According to the detection method of the ground protection system provided in the embodiment of the present application, the flexibility of the detection process of the ground protection system is improved by increasing the output power of the charging pile or reducing the output power of the charging pile.

[0133] In some embodiments, when the initial input electrical signal is smaller than the electrical signal corresponding to the power grid, increasing the output power of the charging pile or decreasing the output power of the charging pile includes:

[0134] When a second difference between the output power and the maximum output power of the charging pile is within the target power range, reducing the output power;

[0135] When the second difference between the output power and the maximum output power of the charging pile is not within the target power range, the output power is increased or decreased.

[0136] In this embodiment, the maximum output power is the maximum value of the output power that the charging pile can achieve.

[0137] The second difference is the difference between the output power of the charging pile at the current collection moment and the maximum output power.

[0138] The target power range is a preset value for determining the second difference degree.

[0139] The specific value of the target power range can be determined based on actual conditions. For example, the target power range can be 1-2, which is not limited in this application.

[0140] Taking the maximum output power of 30 and the target power range of 1-2 as an example, when the output power is 29, it is determined that the second difference between the output power and the maximum output power of the charging pile is in the target power range. At this time, the output power of the charging pile can be adjusted by reducing the output power of the charging pile.

[0141] Continuing with the example of a maximum output power of 30 and a target power range of 1-2, when the output power is 20, it is determined that the second difference between the output power and the maximum output power of the charging pile is not within the target power range. At this time, the output power of the charging pile can be adjusted by reducing the output power of the charging pile or increasing the output power of the charging pile.

[0142] According to the detection method of the grounding protection system provided in the embodiment of the present application, by comparing whether the second difference between the output power and the maximum output power of the charging pile is within the target power range, based on the actual situation of the output power, a suitable adjustment method is selected to improve the efficiency of power adjustment, reduce the occurrence of invalid adjustment, and improve the user experience.

[0143] The detection method of the grounding protection system provided in the embodiment of the present application can be performed by a detection device of the grounding protection system. In the embodiment of the present application, the detection device of the grounding protection system performing the detection method of the grounding protection system is taken as an example to illustrate the detection device of the grounding protection system provided in the embodiment of the present application.

[0144] An embodiment of the present application also provides a detection device for a ground protection system.

[0145] like Figure 4 As shown, the detection device of the ground protection system includes: a first processing module 410 , a second processing module 420 , a third processing module 430 and a fourth processing module 440 .

[0146] The first processing module 410 is used to obtain an initial input electrical signal of the charging pile;

[0147] The second processing module 420 is used to adjust the output power of the charging pile when the initial input electrical signal is smaller than the electrical signal corresponding to the power grid;

[0148] The third processing module 430 is used to obtain a first input electrical signal of the charging pile;

[0149] The fourth processing module 440 is used to determine the detection result of the grounding protection system based on the initial input electrical signal and the first input electrical signal, and the detection result includes: whether the protective neutral line is broken or not.

[0150] According to the detection device of the grounding protection system provided in the embodiment of the present application, by determining that the initial input electrical signal is smaller than the electrical signal corresponding to the power grid, it is preliminarily determined that the protective grounding wire of the grounding protection system may be broken, and the output power of the charging pile is further adjusted. The relationship between the first input electrical signal and the initial input electrical signal of the charging pile is compared again to determine the detection result of the charging pile, thereby improving the accuracy of the detection of the wiring condition of the protective grounding wire. There is no need to add additional equipment, reducing the detection cost, and the detection method is simple and easy to operate.

[0151] In some embodiments, the fourth processing module 440 may also be used to:

[0152] Based on a first difference between the initial input electrical signal and the first input electrical signal and a target threshold, a detection result of the ground fault protection system is determined.

[0153] In some embodiments, the fourth processing module 440 may also be used to:

[0154] When the first difference is greater than the target threshold, determining that the protective grounding line of the grounding protection system is broken;

[0155] When the first difference is not greater than the target threshold, it is determined that the protective neutral line of the grounding protection system is not broken.

[0156] In some embodiments, the apparatus may further include a fifth processing module, configured to:

[0157] The output power of the charging pile is controlled to be adjusted to the output power corresponding to the charging pile before the output power of the charging pile is adjusted.

[0158] In some embodiments, the second processing module 420 may also be used to:

[0159] When the initial input electrical signal is smaller than the electrical signal corresponding to the power grid, the output power of the charging pile is increased or decreased.

[0160] In some embodiments, the second processing module 420 may also be used to:

[0161] When a second difference between the output power and the maximum output power of the charging pile is within the target power range, reducing the output power;

[0162] When the second difference between the output power and the maximum output power of the charging pile is not within the target power range, the output power is increased or decreased.

[0163] The detection device of the ground protection system in the embodiment of the present application can be a ground protection system, or can be an electronic device connected to the ground protection system for communication, or can be a component in the ground protection system or the electronic device, such as an integrated circuit or a chip. The electronic device can be a terminal, or can be other devices other than the terminal. Exemplarily, the electronic device can be a mobile phone, a tablet computer, a laptop computer, a PDA, a vehicle-mounted electronic device, a mobile Internet device (Mobile Internet Device, MID), an augmented reality (augmented reality, AR) / virtual reality (virtualreality, VR) device, a robot, a wearable device, an ultra-mobile personal computer (ultra-mobile personal computer, UMPC), a netbook or a personal digital assistant (personal digital assistant, PDA), etc., and can also be a server, a network attached storage (Network Attached Storage, NAS), a personal computer (personalcomputer, PC), a television (television, TV), a teller machine or a self-service machine, etc., which is not specifically limited in the embodiment of the present application.

[0164] The detection device of the ground protection system in the embodiment of the present application may be a device having an operating system. The operating system may be an Android operating system, an IOS operating system, or other possible operating systems, which are not specifically limited in the embodiment of the present application.

[0165] The detection device of the ground protection system provided in the embodiment of the present application can achieve Figures 1 to 3 To avoid repetition, the various processes implemented by the method embodiment are not described here.

[0166] In some embodiments, Figure 5 As shown, an embodiment of the present application also provides an electronic device 500, including a processor 501, a memory 502, and a computer program stored in the memory 502 and executable on the processor 501. When the program is executed by the processor 501, each process of the detection method embodiment of the above-mentioned grounding protection system is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be described here.

[0167] It should be noted that the electronic devices in the embodiments of the present application include the mobile electronic devices and non-mobile electronic devices mentioned above.

[0168] An embodiment of the present application also provides a non-transitory computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the various processes of the above-mentioned detection method embodiment of the grounding protection system are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0169] The processor is the processor in the electronic device described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory ROM, a random access memory RAM, a magnetic disk or an optical disk.

[0170] An embodiment of the present application also provides a computer program product, including a computer program, which implements the above-mentioned detection method of the ground protection system when executed by a processor.

[0171] The processor is the processor in the electronic device described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory ROM, a random access memory RAM, a magnetic disk or an optical disk.

[0172] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned detection method embodiment of the grounding protection system, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0173] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0174] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0175] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the relevant technology, can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM / RAM, a disk, or an optical disk), and includes a number of instructions for a terminal (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present application.

[0176] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

[0177] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" 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 application. In this specification, the schematic representation of the above terms does 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.

[0178] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A detection method for a grounding protection system, characterized in that: The grounding protection system is connected to the power grid and the charging pile respectively; the method comprises: Obtaining an initial input electrical signal of the charging pile; When the initial input electrical signal is smaller than the electrical signal corresponding to the power grid, adjusting the output power of the charging pile; Acquire a first input electrical signal of the charging pile; Based on the initial input electrical signal and the first input electrical signal, a detection result of the grounding protection system is determined, the detection result comprising: whether the protective neutral line is broken or not.

2. The detection method of the grounding protection system according to claim 1, characterized in that: The step of determining a detection result of the ground protection system based on the initial input electrical signal and the first input electrical signal includes: A detection result of the ground protection system is determined based on a first difference between the initial input electrical signal and the first input electrical signal and a target threshold.

3. The detection method of the ground protection system according to claim 2, characterized in that: The determining the detection result of the ground protection system based on a first difference between the initial input electrical signal and the first input electrical signal and a target threshold value includes: When the first difference is greater than the target threshold, determining that the protective grounding line of the grounding protection system is broken; When the first difference is not greater than the target threshold, it is determined that the protective neutral line of the grounding protection system is not broken.

4. The detection method of the grounding protection system according to any one of claims 1 to 3, characterized in that: After determining that the protective neutral line of the grounding protection system is not broken based on the initial input electrical signal and the first input electrical signal, the method further includes: The output power of the charging pile is controlled to be adjusted to the output power corresponding to the charging pile before the output power of the charging pile is adjusted.

5. The detection method of the grounding protection system according to any one of claims 1 to 3, characterized in that: When the initial input electrical signal is smaller than the electrical signal corresponding to the power grid, adjusting the output power of the charging pile includes: When the initial input electrical signal is smaller than the electrical signal corresponding to the power grid, the output power of the charging pile is increased or decreased.

6. The detection method of the ground protection system according to claim 5, characterized in that: When the initial input electrical signal is smaller than the electrical signal corresponding to the power grid, increasing the output power of the charging pile or reducing the output power of the charging pile includes: When a second difference between the output power and the maximum output power of the charging pile is within a target power range, reducing the output power; When the second difference between the output power and the maximum output power of the charging pile is not within the target power range, the output power is increased or decreased.

7. The detection method of the grounding protection system according to any one of claims 1 to 3, characterized in that: The grounding protection system is a three-phase four-wire and three-phase five-wire mixed grounding protection system.

8. A detection device for a grounding protection system, characterized in that: The grounding protection system is connected to the power grid and the charging pile respectively; the device includes: A first processing module, used to obtain an initial input electrical signal of the charging pile; The second processing module is used to adjust the output power of the charging pile when the initial input electrical signal is smaller than the electrical signal corresponding to the power grid. A third processing module, used to obtain a first input electrical signal of the charging pile; The fourth processing module is used to determine the detection result of the grounding protection system based on the initial input electrical signal and the first input electrical signal, and the detection result includes: whether the protective neutral line is broken or not.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the program, the detection method of the grounding protection system according to any one of claims 1 to 7 is implemented.

10. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the detection method of the grounding protection system according to any one of claims 1 to 7 is implemented.

11. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the detection method of the grounding protection system according to any one of claims 1 to 7 is implemented.

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