Safety protection control method, device and equipment of optical storage and charging station system

Abstract

The application provides a safety protection control method, device and equipment of a light storage and charging station system, which comprises the following steps: acquiring current data collected by a signal measurement sensor at a fixed time; wherein the current data comprises leakage current collected by a leakage current sensor and positive and negative node current collected by a current sensor; analyzing the current data according to a preset first safety protection strategy to determine whether the current data meets a first current triggering condition; analyzing the positive and negative node current according to a preset second safety protection strategy to determine whether the positive and negative node current meets a second current triggering condition; and if the current data meets the first current triggering condition and / or the positive and negative node current meets the second current triggering condition, a corresponding branch circuit triggering signal is generated to perform a tripping operation on the corresponding branch circuit. The application realizes the rapid protection of the branch circuit by configuring the signal measurement sensor in each branch circuit, thereby effectively improving the system operation safety.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electrical engineering, and particularly relates to a safety protection control method, device and equipment of a light storage and charging station system. BACKGROUND

[0002] The existing light storage and charging station system mostly adopts an IT grounding mode, and its protection function depends on insulation detection technology. When an insulation fault occurs, a pre-warning and processing are realized through an insulation detector. However, only one insulation detector can be configured in an alternating current network, and fault positioning cannot be realized when a fault occurs. Moreover, a large number of capacitors exist in a direct current system bus, and the environmental temperature, humidity, cable length and laying mode all have a significant influence on the leakage current, resulting in a high false alarm rate of the protection system using the insulation detector. In addition, when a leakage current fault occurs, it is difficult to physically isolate the fault, which brings a safety hazard to the subsequent operation of the system.

[0003] Therefore, the existing light storage and charging station system has the problem of insufficient system operation safety. SUMMARY

[0004] Embodiments of the present application provide a safety protection control method, device and equipment of a light storage and charging station system, aiming at solving the problem of insufficient system operation safety of the existing light storage and charging station system.

[0005] In a first aspect, the embodiments of the present application provide a safety protection control method of a light storage and charging station system. The method is applied to a signal acquisition controller of the light storage and charging station system. The light storage and charging station system includes a plurality of branch circuits. A signal measurement sensor is arranged on each branch circuit. The signal measurement sensor is in communication connection with the signal acquisition controller. The signal measurement sensor includes a leakage current sensor and a current sensor. The method includes the following steps.

[0006] Timely acquiring current data collected by the signal measurement sensor. The current data includes leakage current collected by the leakage current sensor and positive and negative node current collected by the current sensor.

[0007] Analyzing the current data according to a preset first safety protection strategy, and determining whether the current data meets a first current trigger condition.

[0008] Analyzing the positive and negative node current according to a preset second safety protection strategy, and determining whether the positive and negative node current meets a second current trigger condition.

[0009] If the current data meets the first current trigger condition and / or the positive and negative node current meets the second current trigger condition, a corresponding branch circuit trigger signal is generated to perform a tripping operation on the corresponding branch circuit.

[0010] In a second aspect, the embodiments of the present application further provide a safety protection control device of a light storage and charging station system, the device being configured in a signal acquisition controller of the light storage and charging station system, the light storage and charging station system including a plurality of branch circuits, each of the branch circuits being provided with a signal measurement sensor, and each of the signal measurement sensors being in communication connection with the signal acquisition controller; wherein the signal measurement sensor includes a leakage current sensor and a current sensor; and the device includes:

[0011] an acquisition unit configured to acquire current data collected by the signal measurement sensor at a regular time interval; wherein the current data includes leakage current collected by the leakage current sensor and positive and negative node current collected by the current sensor;

[0012] a first analysis unit configured to analyze the current data according to a preset first safety protection strategy, and determine whether the current data satisfies a first current trigger condition;

[0013] a second analysis unit configured to analyze the positive and negative node current according to a preset second safety protection strategy, and determine whether the positive and negative node current satisfies a second current trigger condition;

[0014] a generation unit configured to generate a corresponding branch circuit trigger signal to perform a tripping operation on a corresponding branch circuit if the current data satisfies the first current trigger condition and / or the positive and negative node current satisfies the second current trigger condition.

[0015] In a third aspect, the embodiments of the present application further provide an electronic device including a memory and a processor, the memory having a computer program stored thereon, and the processor being configured to execute the computer program to implement the method of the first aspect.

[0016] In a fourth aspect, the embodiments of the present application further provide a computer readable storage medium, the storage medium having a computer program stored thereon, the computer program including program instructions, and the program instructions being configured to implement the method of the first aspect when executed by a processor.

[0017] The application provides a safety protection control method, device and equipment of a light storage and charging station system, the method is applied to a signal acquisition controller of the light storage and charging station system, the light storage and charging station comprises a plurality of branch circuits, a signal measurement sensor is arranged on each branch circuit, and the signal measurement sensor is in communication connection with the signal acquisition controller; wherein the signal measurement sensor comprises a leakage current sensor and a current sensor; the method comprises: acquiring current data collected by the signal measurement sensor at a fixed time; wherein the current data comprises leakage current collected by the leakage current sensor and positive and negative node current collected by the current sensor; analyzing the current data according to a preset first safety protection strategy, judging whether the current data meets a first current trigger condition; analyzing the positive and negative node current according to a preset second safety protection strategy, judging whether the positive and negative node current meets a second current trigger condition; if the current data meets the first current trigger condition and / or the positive and negative node current meets the second current trigger condition, a corresponding branch circuit trigger signal is generated to perform a disconnecting operation on the corresponding branch circuit. In the application, the signal measurement sensor is arranged on each branch circuit, and the current data of each branch circuit is uploaded to the signal acquisition controller at a fixed time; based on the first safety protection strategy and the second safety protection strategy, the current data and the positive and negative node current are analyzed respectively, if the current data meets the first current trigger condition and / or the positive and negative node current meets the second current trigger condition, the corresponding branch circuit trigger signal is generated in time to drive the corresponding branch circuit to perform the disconnecting operation. The signal measurement sensor is flexible in deployment, and the current data in the protection process and the protection action record are stored synchronously, which realizes the rapid protection of the branch circuit, adapts to the requirements of multiple scenes, provides support for post-accident trace analysis, and effectively improves the system operation safety. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0019] Figure 1 The flowchart of the safety protection control method of the light storage and charging station system provided by the embodiment of the present application;

[0020] Figure 2 The schematic block diagram of the safety protection control device of the light storage and charging station system provided by the embodiment of the present application;

[0021] Figure 3 The schematic block diagram of the electronic device provided by the embodiment of the present application;

[0022] Figure 4 The application environment diagram of the safety protection control method of the light storage and charging station system provided by the embodiment of the present application is shown. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0024] It should be understood that, when used in the specification and the appended claims, the terms "comprise" and "include" indicate the presence of described features, integers, steps, operations, elements, and / or components, but do not exclude one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0025] It should also be understood that the terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. As used in the specification and the appended claims of the present application, the singular forms "a", "an" and "the" are intended to include the plural forms, unless the context clearly indicates otherwise.

[0026] It should be further understood that the term "and / or" used in the specification and the appended claims of the present application means any combination of one or more of the associated listed items and all possible combinations, and includes these combinations. The embodiments of the present application provide a safety protection control method, device and equipment of a light storage and charging station system. Please refer to Figure 4 , Figure 4The application environment schematic diagram of the safety protection control method of the optical storage and charging station system provided by the embodiment of the present application is shown. The method is applied to a signal acquisition controller 10 of an optical storage and charging station system. The optical storage and charging station includes a plurality of branch circuits 20. Each of the branch circuits 20 is provided with a signal measurement sensor. The signal measurement sensors are in communication connection with the signal acquisition controller 10. The signal measurement sensors include a leakage current sensor 31 and a current sensor. The leakage current sensor 31 is installed on the corresponding branch circuit 20 in a through-core installation mode. The current sensor includes a first current sensor 32 and a second current sensor 33. The first current sensor 32 is used to acquire positive current. The second current sensor 33 is used to acquire negative current. The signal acquisition controller 10 adopts a high-speed digital signal processing chip. After analog signals from the signal measurement sensors are converted into digital signals through a signal conditioning circuit, the converted current data and positive and negative node currents are analyzed based on a first safety protection strategy and a second safety protection strategy, respectively, to realize rapid positioning and processing of faults. When a leakage current fault is confirmed, corresponding branch circuit trigger signals are generated in real time to drive the corresponding branch circuit 20 to perform a disconnecting operation. The present application is described in detail through specific embodiments.

[0027] Figure 1 The flowchart of the safety protection control method of the optical storage and charging station system provided by the embodiment of the present application is shown. As shown in Figure 1 The method includes the following steps S110-S140.

[0028] S110, the current data collected by the signal measurement sensor is acquired in a timely manner. The current data includes leakage current collected by the leakage current sensor and positive and negative node currents collected by the current sensor.

[0029] In the embodiment, the current data collected by the signal measurement sensor is acquired in a timely manner. The current data includes leakage current collected by the leakage current sensor and positive and negative node currents collected by the current sensor. The leakage current sensor is installed on the corresponding branch circuit in a through-core installation mode to realize leakage current acquisition in a timely manner. The current sensor includes a first current sensor and a second current sensor. The first current sensor is installed on the positive bus of the branch circuit to acquire positive current. The second current sensor is installed on the negative bus of the branch circuit to acquire negative current. The positive and negative node currents include the positive current and the negative current.

[0030] S120, the current data is analyzed according to a preset first safety protection strategy to determine whether the current data meets a first current trigger condition.

[0031] In the embodiment, the current data corresponds to each branch circuit, and the current data specifically includes a leakage current and a positive and negative node current, and the positive and negative node current includes a positive electrode current and a negative electrode current. In the first safety protection strategy, whether the current data of the same branch circuit satisfies the first current trigger condition is determined by analyzing the relationship among the leakage current, the positive electrode current and the negative electrode current of the same branch circuit.

[0032] In an embodiment, the step S120 includes: calculating a deviation value of the leakage current and the positive and negative node current, and determining whether the deviation value is greater than or equal to a first preset threshold value; if the deviation value is greater than or equal to the first preset threshold value, determining whether a leakage current change value is greater than or equal to a second preset threshold value; if the leakage current change value is greater than or equal to the second preset threshold value, analyzing the leakage current and the positive and negative node current by a leakage current evaluation model to obtain a leakage current prediction value; and performing a counting determination based on the leakage current prediction value, the leakage current and a third preset threshold value, and determining that the current data satisfies the first current trigger condition when a first counting value is greater than a first counting threshold value.

[0033] In the embodiment, the deviation value of the leakage current and the positive and negative node current on the same branch circuit is calculated; the positive and negative node current includes a positive electrode current and a negative electrode current, and the deviation value is iLx-(iPx+iNx), where x is a branch circuit serial number (x=1, 2, 3, …, N), iLx is a leakage current of the xth branch circuit, iPx is a positive electrode current of the xth branch circuit, and iNx is a negative electrode current of the xth branch circuit; whether the deviation value is greater than or equal to a first preset threshold value a×I leak (a is a first calibration threshold value, I leak is a branch circuit leakage current allowable value); if the deviation value is greater than or equal to the first preset threshold value a×I leak , whether a leakage current change value is greater than or equal to a second preset threshold value b×I leak (b is a second calibration threshold value, I leakThe leakage current change value is calculated as follows: iLx(t) - iLx(t-1); where iLx(t) is the leakage current of the x-th branch circuit at the current moment, and iLx(t-1) is the leakage current of the x-th branch circuit at the previous moment. If the leakage current change value is greater than or equal to the second preset threshold, the leakage current and the positive and negative node currents are analyzed using a leakage current evaluation model to obtain a predicted leakage current value. Specifically, the leakage current evaluation model takes current current data and historical current data as input, extracts features such as current amplitude and rate of change, learns their correlation patterns through a time-series prediction algorithm, and predicts the leakage current trend value (i.e., the predicted leakage current value) for future periods. Based on the predicted leakage current value, the leakage current, and the third preset threshold, a counting judgment is performed. When the first count value is greater than the first count threshold, it is determined that the current data meets the first current triggering condition.

[0034] If the deviation value is less than the first preset threshold, or the leakage current change value is less than the second preset threshold, then return to the step of periodically acquiring the current data collected by the signal measurement sensor.

[0035] In one embodiment, the step of counting based on the predicted leakage current, the leakage current, and a third preset threshold, and determining that the current data meets the first current trigger condition when the first count value is greater than the first count threshold, includes: if the leakage current is greater than both the predicted leakage current and the third preset threshold, accumulating the first count value; determining whether the first count value is greater than the first count threshold; and if the first count value is greater than the first count threshold, determining that the current data meets the first current trigger condition.

[0036] In this embodiment, if the leakage current is simultaneously greater than the predicted leakage current value iMx and the third preset threshold c×I leak (c is the third calibration threshold, I) leak (The allowable leakage current of the branch circuit) is used to accumulate the first count value Cnt1; it is determined whether the first count value Cnt1 is greater than the first counting threshold N1; if the first count value Cnt1 is greater than the first counting threshold N1, it is determined that the current data meets the first current triggering condition.

[0037] If the first count value Cnt1 is less than or equal to the first count threshold N1, then return to the step of accumulating the first count value if the leakage current is greater than both the leakage current prediction value and the third preset threshold.

[0038] S130. Analyze the positive and negative node currents according to the preset second safety protection strategy, and determine whether the positive and negative node currents meet the second current triggering condition.

[0039] In the embodiment, the positive and negative node currents include positive electrode current iPx and negative electrode current iNx, and in the second safety protection strategy, the positive electrode current iPx and the negative electrode current iNx are analyzed respectively to determine whether the positive and negative node currents of the branch circuit satisfy the second current trigger condition.

[0040] In an embodiment, the positive and negative node currents include positive electrode current and negative electrode current, and step S130 includes: performing counting determination based on the positive electrode current, fourth preset threshold and sixth preset threshold, generating positive electrode current trigger signal when second counting value is greater than second counting threshold; performing counting determination based on the negative electrode current, fifth preset threshold and seventh preset threshold, generating negative electrode current trigger signal when third counting value is greater than third counting threshold; if the positive electrode current trigger signal and the negative electrode current trigger signal are generated simultaneously, it is determined that the positive and negative node currents satisfy the second current trigger condition.

[0041] In the embodiment, the counting determination is performed based on the positive electrode current iPx, fourth preset threshold d×I (d is fourth calibration threshold, and I is branch circuit rated current value) and sixth preset threshold f×I (f is sixth calibration threshold, and I is branch circuit rated current value), positive electrode current trigger signal is generated when second counting value Cnt2 is greater than second counting threshold N2; the counting determination is performed based on the negative electrode current iNx, fifth preset threshold e×I (e is fifth calibration threshold, and I is branch circuit rated current value) and seventh preset threshold g×I (g is seventh calibration threshold, and I is branch circuit rated current value), negative electrode current trigger signal is generated when third counting value Cnt3 is greater than third counting threshold N3; if the positive electrode current trigger signal and the negative electrode current trigger signal are generated simultaneously, it is determined that the positive and negative node currents satisfy the second current trigger condition.

[0042] If the positive electrode current trigger signal and the negative electrode current trigger signal are generated simultaneously (i.e. second counting value Cnt2 is greater than second counting threshold N2 and third counting value Cnt3 is greater than third counting threshold N3), it is determined that the positive and negative node currents satisfy the second current trigger condition.

[0043] In an embodiment, the counting determination based on the positive electrode current, fourth preset threshold and sixth preset threshold, generating positive electrode current trigger signal when second counting value is greater than second counting threshold, includes: determining whether the positive electrode current is greater than or equal to the fourth preset threshold; if the positive electrode current is greater than or equal to the fourth preset threshold, determining whether positive electrode current change value is greater than or equal to the sixth preset threshold; if the positive electrode current change value is greater than or equal to the sixth preset threshold, accumulating the second counting value; determining whether the second counting value is greater than the second counting threshold; if the second counting value is greater than the second counting threshold, generating positive electrode current trigger signal.

[0044] In this embodiment, it is determined whether the positive current iPx is greater than or equal to the fourth preset threshold d×I (d is the fourth calibration threshold, and I is the rated current value of the branch circuit); if the positive current is greater than or equal to the fourth preset threshold d×I (iPx≥d×I), it is further determined whether the change value of the positive current is greater than or equal to the sixth preset threshold f×I, where the change value of the positive current = iPx(t)-iPx(t-1) (iPx(t) is the positive current of the x-th branch circuit at the current time, and iPx(t-1) is the positive current of the x-th branch circuit at the previous time); if the change value of the positive current is greater than or equal to the sixth preset threshold, the second count value Cnt2 is accumulated; then it is determined whether the second count value Cnt2 is greater than the second count threshold N2. If the second count value Cnt2 is greater than the second count threshold N2, a positive current trigger signal is generated.

[0045] If the positive current iPx is less than the fourth preset threshold d×I, or the change in positive current is less than the sixth preset threshold f×I, then return to the step of periodically acquiring the current data collected by the signal measurement sensor to ensure timely capture of any subsequent abnormal current conditions.

[0046] If the second count value Cnt2 is less than or equal to the second count threshold N2, then return to the step of determining whether the change value of the positive electrode current is greater than or equal to the sixth preset threshold.

[0047] In one embodiment, the step of counting and judging based on the negative electrode current, a fifth preset threshold, and a seventh preset threshold, and generating a negative electrode current trigger signal when the third count value is greater than the third count threshold, includes: judging whether the negative electrode current is greater than or equal to the fifth preset threshold; if the negative electrode current is greater than or equal to the fifth preset threshold, judging whether the change value of the negative electrode current is greater than or equal to the seventh preset threshold; if the change value of the negative electrode current is greater than or equal to the seventh preset threshold, accumulating the third count value; judging whether the third count value is greater than the third count threshold; and if the third count value is greater than the third count threshold, generating a negative electrode current trigger signal.

[0048] In the embodiment, it is judged whether the negative electrode current iNx is greater than or equal to a fifth preset threshold value e×I (e is a fifth calibration threshold value, and I is a branch circuit rated current value); if the negative electrode current is greater than or equal to the fifth preset threshold value (iNx≥e×I), it is judged whether a negative electrode current change value is greater than or equal to a seventh preset threshold value g×I (g is a seventh calibration threshold value); wherein the negative electrode current change value is iNx(t)-iNx(t-1) (iNx(t) is a negative electrode current of the xth branch circuit at a current time, and iNx(t-1) is a negative electrode current of the xth branch circuit at a previous time); if the negative electrode current change value is greater than or equal to the seventh preset threshold value, a third count value Cnt3 is accumulated; if the third count value Cnt3 is greater than a third count threshold value N3, a negative electrode current trigger signal is generated.

[0049] If the negative electrode current iNx is less than the fifth preset threshold value e×I, or the negative electrode current change value is less than the seventh preset threshold value, the step of acquiring the current data collected by the signal measurement sensor is executed.

[0050] If the third count value Cnt3 is less than or equal to the third count threshold value N3, the step of judging whether the negative electrode current change value is greater than or equal to the seventh preset threshold value is executed.

[0051] In an embodiment, after the step S130, further comprising: if the current data satisfies the first current trigger condition and / or the positive and negative node current satisfies the second current trigger condition, a corresponding branch circuit identification signal is generated to mark the corresponding branch circuit as faulty.

[0052] In the embodiment, if the current data satisfies the first current trigger condition (i.e. the first count value is greater than the first count threshold value), and / or the positive and negative node current satisfies the second current trigger condition (i.e. the second count value is greater than the second count threshold value and the third count value is greater than the third count threshold value), a corresponding branch circuit identification signal is generated to provide support for post-accident trace analysis.

[0053] S140, if the current data satisfies the first current trigger condition and / or the positive and negative node current satisfies the second current trigger condition, a corresponding branch circuit trigger signal is generated to perform a disconnecting operation on the corresponding branch circuit.

[0054] In the embodiment, if the current data satisfies the first current trigger condition (i.e. the first count value is greater than the first count threshold value) and / or the positive and negative node current satisfies the second current trigger condition (i.e. the second count value is greater than the second count threshold value and the third count value is greater than the third count threshold value), a corresponding branch circuit trigger signal is generated to perform a disconnecting operation on the corresponding branch circuit, thereby avoiding a human electric shock accident.

[0055] In summary, the application configures signal measurement sensors in each branch circuit, and regularly uploads current data of each branch circuit to a signal collection controller; based on a first safety protection strategy and a second safety protection strategy, the current data and positive and negative node currents are analyzed respectively, if the current data meets the first current trigger condition and / or the positive and negative node currents meet the second current trigger condition, corresponding branch circuit trigger signals are generated in time to drive the corresponding branch circuit to perform a tripping operation. The signal measurement sensors are flexible in deployment, and the current data and protection action records during protection are stored synchronously, which not only realizes fast protection of the branch circuit and adapts to multiple scene requirements, but also provides support for post-accident trace analysis, and effectively improves the system operation safety.

[0056] Figure 2 The safety protection control device of the optical storage and charging station system provided by the embodiment of the application is shown in a schematic block diagram. As shown in Figure 2 Corresponding to the safety protection control method of the above optical storage and charging station system, the application also provides a safety protection control device of an optical storage and charging station system. The device is configured in a signal collection controller of an optical storage and charging station system. The optical storage and charging station system includes a plurality of branch circuits. Each branch circuit is provided with a signal measurement sensor. The signal measurement sensors are in communication connection with the signal collection controller. The signal measurement sensors include a leakage current sensor and a current sensor. Specifically, referring to Figure 2 The safety protection control device 700 of the optical storage and charging station system includes:

[0057] An acquisition unit 701 is configured to regularly acquire current data collected by the signal measurement sensor. The current data includes leakage currents collected by the leakage current sensor and positive and negative node currents collected by the current sensor.

[0058] A first analysis unit 702 is configured to analyze the current data according to a preset first safety protection strategy, and determine whether the current data meets a first current trigger condition.

[0059] A second analysis unit 703 is configured to analyze the positive and negative node currents according to a preset second safety protection strategy, and determine whether the positive and negative node currents meet a second current trigger condition.

[0060] A generation unit 704 is configured to generate a corresponding branch circuit trigger signal to perform a tripping operation on the corresponding branch circuit if the current data meets the first current trigger condition and / or the positive and negative node currents meet the second current trigger condition.

[0061] In some embodiments, the second analysis unit 703 is further configured to, after performing the step of determining whether the positive and negative node currents satisfy the second current trigger condition according to the preset second safety protection strategy, perform the following steps:

[0062] If the current data satisfy the first current trigger condition and / or the positive and negative node currents satisfy the second current trigger condition, a corresponding branch circuit identification signal is generated to mark the corresponding branch circuit as faulty.

[0063] In some embodiments, when performing the step of determining whether the current data satisfy the first current trigger condition according to the preset first safety protection strategy, the first analysis unit 702 is specifically configured to:

[0064] calculate a deviation value of the leakage current and the positive and negative node currents, and determine whether the deviation value is greater than or equal to a first preset threshold value; if the deviation value is greater than or equal to the first preset threshold value, determine whether a leakage current change value is greater than or equal to a second preset threshold value; if the leakage current change value is greater than or equal to the second preset threshold value, analyze the leakage current and the positive and negative node currents by a leakage current evaluation model to obtain a leakage current prediction value; perform a counting determination based on the leakage current prediction value, the leakage current, and a third preset threshold value, and determine that the current data satisfy the first current trigger condition when a first counting value is greater than a first counting threshold value.

[0065] In some embodiments, when performing the step of determining that the current data satisfy the first current trigger condition based on the counting determination based on the leakage current prediction value, the leakage current, and the third preset threshold value, and determining that the first counting value is greater than the first counting threshold value, the first analysis unit 702 is specifically configured to:

[0066] If the leakage current is greater than both the leakage current prediction value and the third preset threshold value, the first counting value is accumulated; it is determined whether the first counting value is greater than the first counting threshold value; if the first counting value is greater than the first counting threshold value, it is determined that the current data satisfy the first current trigger condition.

[0067] In some embodiments, the positive and negative node currents include positive and negative currents, and when performing the step of determining whether the positive and negative node currents satisfy the second current trigger condition according to the preset second safety protection strategy, the second analysis unit 703 is specifically configured to:

[0068] The counting is performed based on the positive electrode current, the fourth preset threshold and the sixth preset threshold, and when the second counting value is greater than the second counting threshold, a positive electrode current trigger signal is generated.

[0069] In some embodiments, when the second analysis unit 703 performs the counting based on the positive electrode current, the fourth preset threshold and the sixth preset threshold, and when the second counting value is greater than the second counting threshold, the step of generating the positive electrode current trigger signal is specifically used for:

[0070] determining whether the positive electrode current is greater than or equal to the fourth preset threshold; if the positive electrode current is greater than or equal to the fourth preset threshold, determining whether a positive electrode current change value is greater than or equal to the sixth preset threshold; if the positive electrode current change value is greater than or equal to the sixth preset threshold, accumulating the second counting value; determining whether the second counting value is greater than the second counting threshold; and if the second counting value is greater than the second counting threshold, generating the positive electrode current trigger signal.

[0071] In some embodiments, when the second analysis unit 703 performs the counting based on the negative electrode current, the fifth preset threshold and the seventh preset threshold, and when the third counting value is greater than the third counting threshold, the step of generating the negative electrode current trigger signal is specifically used for:

[0072] determining whether the negative electrode current is greater than or equal to the fifth preset threshold; if the negative electrode current is greater than or equal to the fifth preset threshold, determining whether a negative electrode current change value is greater than or equal to the seventh preset threshold; if the negative electrode current change value is greater than or equal to the seventh preset threshold, accumulating the third counting value; determining whether the third counting value is greater than the third counting threshold; and if the third counting value is greater than the third counting threshold, generating the negative electrode current trigger signal.

[0073] It should be noted that the specific implementation process of the safety protection control device of the above-mentioned optical storage and charging station system and each unit can be clearly understood by those skilled in the art, which can be referred to the corresponding description in the foregoing method embodiments. For the convenience and brevity of description, it will not be repeated here.

[0074] The safety protection control device of the above-mentioned optical storage and charging station system can be realized in the form of a computer program, which can run on an electronic device as shown in Figure 3 .

[0075] Please refer toFigure 3 , Figure 3 is a schematic block diagram of an electronic device provided by an embodiment of the present application. The electronic device 800 can be a terminal or a server, wherein the terminal can be an electronic device with communication function.

[0076] Referring to Figure 3 , the electronic device 800 comprises a processor 802, a memory and a network interface 805 connected through a system bus 801, wherein the memory can comprise a non-volatile storage medium 803 and an internal memory 804.

[0077] The non-volatile storage medium 803 can store an operating system 8031 and a computer program 8032. The computer program 8032 comprises program instructions which, when executed, can cause the processor 802 to perform a security protection control method of an optical storage charging station system.

[0078] The processor 802 is configured to provide computing and control capabilities to support the operation of the entire electronic device 800.

[0079] The internal memory 804 provides an environment for the running of the computer program 8032 in the non-volatile storage medium 803, which, when executed by the processor 802, can cause the processor 802 to perform a security protection control method of an optical storage charging station system.

[0080] The network interface 805 is configured to perform network communication with other devices. Those skilled in the art can understand that Figure 3 The structure shown in the figure is only a block diagram of part of the structure related to the present application scheme, and does not constitute a limitation on the electronic device 800 to which the present application scheme is applied. The specific electronic device 800 can comprise more or fewer components than those shown in the figure, or combine certain components, or have a different component arrangement.

[0081] The processor 802 is configured to run the computer program 8032 stored in the memory to implement the following steps:

[0082] acquire current data collected by the signal measurement sensor in a timely manner; wherein the current data comprises leakage current collected by the leakage current sensor and positive and negative node current collected by the current sensor; analyze the current data according to a preset first security protection strategy to determine whether the current data meets a first current trigger condition; analyze the positive and negative node current according to a preset second security protection strategy to determine whether the positive and negative node current meets a second current trigger condition; and if the current data meets the first current trigger condition and / or the positive and negative node current meets the second current trigger condition, generate a corresponding branch circuit trigger signal to perform a tripping operation on the corresponding branch circuit.

[0083] In some embodiments, the processor 802, after implementing the step of analyzing the positive and negative node currents according to the preset second safety protection strategy and determining whether the positive and negative node currents satisfy the second current trigger condition, further implements the following steps:

[0084] If the current data satisfies the first current trigger condition and / or the positive and negative node currents satisfy the second current trigger condition, a corresponding branch circuit identification signal is generated to mark the corresponding branch circuit as faulty.

[0085] In some embodiments, when the processor 802 implements the step of analyzing the current data according to the preset first safety protection strategy and determining whether the current data satisfies the first current trigger condition, it specifically implements the following steps:

[0086] The deviation value of the leakage current and the positive and negative node currents is calculated, and it is determined whether the deviation value is greater than or equal to a first preset threshold value. If the deviation value is greater than or equal to the first preset threshold value, it is determined whether the leakage current change value is greater than or equal to a second preset threshold value. If the leakage current change value is greater than or equal to the second preset threshold value, the leakage current and the positive and negative node currents are analyzed by a leakage current evaluation model to obtain a leakage current prediction value. Based on the leakage current prediction value, the leakage current, and a third preset threshold value, a counting determination is made. When a first count value is greater than a first count threshold value, it is determined that the current data satisfies the first current trigger condition.

[0087] In some embodiments, when the processor 802 implements the step of making a counting determination based on the leakage current prediction value, the leakage current, and a third preset threshold value, and determines that the current data satisfies the first current trigger condition when a first count value is greater than a first count threshold value, it specifically implements the following steps:

[0088] If the leakage current is greater than both the leakage current prediction value and the third preset threshold value, the first count value is accumulated. It is determined whether the first count value is greater than the first count threshold value. If the first count value is greater than the first count threshold value, it is determined that the current data satisfies the first current trigger condition.

[0089] In some embodiments, the positive and negative node currents include positive and negative currents, and the processor 802, when implementing the step of analyzing the positive and negative node currents according to the preset second safety protection strategy and determining whether the positive and negative node currents satisfy the second current trigger condition, specifically implements the following steps:

[0090] The counting is performed based on the positive electrode current, a fourth preset threshold value and a sixth preset threshold value, and when a second counting value is greater than a second counting threshold value, a positive electrode current trigger signal is generated. The counting is performed based on the negative electrode current, a fifth preset threshold value and a seventh preset threshold value, and when a third counting value is greater than a third counting threshold value, a negative electrode current trigger signal is generated. If the positive electrode current trigger signal and the negative electrode current trigger signal are generated at the same time, it is determined that the positive and negative node current meets a second current trigger condition.

[0091] In some embodiments, when the processor 802 implements the step of performing counting based on the positive electrode current, a fourth preset threshold value and a sixth preset threshold value, and when a second counting value is greater than a second counting threshold value, a positive electrode current trigger signal is generated, the processor 802 specifically implements the following steps:

[0092] It is determined whether the positive electrode current is greater than or equal to the fourth preset threshold value. If the positive electrode current is greater than or equal to the fourth preset threshold value, it is determined whether a positive electrode current change value is greater than or equal to the sixth preset threshold value. If the positive electrode current change value is greater than or equal to the sixth preset threshold value, the second counting value is accumulated. It is determined whether the second counting value is greater than the second counting threshold value. If the second counting value is greater than the second counting threshold value, a positive electrode current trigger signal is generated.

[0093] In some embodiments, when the processor 802 implements the step of performing counting based on the negative electrode current, a fifth preset threshold value and a seventh preset threshold value, and when a third counting value is greater than a third counting threshold value, a negative electrode current trigger signal is generated, the processor 802 specifically implements the following steps:

[0094] It is determined whether the negative electrode current is greater than or equal to the fifth preset threshold value. If the negative electrode current is greater than or equal to the fifth preset threshold value, it is determined whether a negative electrode current change value is greater than or equal to the seventh preset threshold value. If the negative electrode current change value is greater than or equal to the seventh preset threshold value, the third counting value is accumulated. It is determined whether the third counting value is greater than the third counting threshold value. If the third counting value is greater than the third counting threshold value, a negative electrode current trigger signal is generated.

[0095] It should be appreciated that in the embodiments of the present application, the processor 802 can be a central processing unit (CPU), and can also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic components, discrete hardware components, etc. The general-purpose processor can be a microprocessor or can also be any conventional processor.

[0096] It can be understood by those skilled in the art that all or part of the processes in the above-mentioned embodiments can be completed by instructing relevant hardware by a computer program. The computer program includes program instructions, and the computer program can be stored in a storage medium, which is a computer readable storage medium. The program instructions are executed by at least one processor in the computer system to realize the process steps of the above-mentioned embodiments.

[0097] Therefore, the present application further provides a storage medium. The storage medium can be a computer readable storage medium. The storage medium stores a computer program, wherein the computer program includes program instructions. The program instructions are executed by a processor to make the processor execute the following steps:

[0098] Timing acquisition of current data collected by the signal measurement sensor; wherein the current data includes leakage current collected by the leakage current sensor and positive and negative node current collected by the current sensor; analyzing the current data according to a preset first safety protection strategy to determine whether the current data meets a first current trigger condition; analyzing the positive and negative node current according to a preset second safety protection strategy to determine whether the positive and negative node current meets a second current trigger condition; if the current data meets the first current trigger condition and / or the positive and negative node current meets the second current trigger condition, a corresponding branch circuit trigger signal is generated to perform a tripping operation on the corresponding branch circuit.

[0099] In an embodiment, the processor, after executing the program instructions to realize the step of analyzing the positive and negative node current according to a preset second safety protection strategy to determine whether the positive and negative node current meets a second current trigger condition, further realizes the following steps:

[0100] If the current data satisfies the first current trigger condition and / or the positive and negative node current satisfies the second current trigger condition, a corresponding branch loop identification signal is generated to mark the corresponding branch loop as faulty.

[0101] In an embodiment, when the processor executes the program instructions to analyze the current data according to the preset first security protection strategy and determine whether the current data satisfies the first current trigger condition, the following steps are implemented:

[0102] The deviation value of the leakage current and the positive and negative node current is calculated, and it is determined whether the deviation value is greater than or equal to a first preset threshold value; if the deviation value is greater than or equal to the first preset threshold value, it is determined whether the leakage current change value is greater than or equal to a second preset threshold value; if the leakage current change value is greater than or equal to the second preset threshold value, the leakage current and the positive and negative node current are analyzed by a leakage current evaluation model to obtain a leakage current prediction value; based on the leakage current prediction value, the leakage current, and a third preset threshold value, a counting determination is performed, and when a first counting value is greater than a first counting threshold value, it is determined that the current data satisfies the first current trigger condition.

[0103] In an embodiment, when the processor executes the program instructions to perform a counting determination based on the leakage current prediction value, the leakage current, and a third preset threshold value, and when a first counting value is greater than a first counting threshold value, it is determined that the current data satisfies the first current trigger condition, the following steps are implemented:

[0104] If the leakage current is greater than the leakage current prediction value and the third preset threshold value at the same time, a first counting value is accumulated; it is determined whether the first counting value is greater than the first counting threshold value; if the first counting value is greater than the first counting threshold value, it is determined that the current data satisfies the first current trigger condition.

[0105] In an embodiment, the positive and negative node current includes a positive current and a negative current, and when the processor executes the program instructions to analyze the positive and negative node current according to the preset second security protection strategy and determine whether the positive and negative node current satisfies the second current trigger condition, the following steps are implemented:

[0106] A counting determination is performed based on the positive current, a fourth preset threshold value, and a sixth preset threshold value, and when a second counting value is greater than a second counting threshold value, a positive current trigger signal is generated; a counting determination is performed based on the negative current, a fifth preset threshold value, and a seventh preset threshold value, and when a third counting value is greater than a third counting threshold value, a negative current trigger signal is generated; if the positive current trigger signal and the negative current trigger signal are generated at the same time, it is determined that the positive and negative node current satisfies the second current trigger condition.

[0107] In an embodiment, the processor, when executing the program instructions, implements the counting judgment based on the positive electrode current, the fourth preset threshold and the sixth preset threshold, and when the second count value is greater than the second count threshold, generates the positive electrode current trigger signal in the step of generating the positive electrode current trigger signal, and the implementation is as follows:

[0108] determining whether the positive electrode current is greater than or equal to the fourth preset threshold; if the positive electrode current is greater than or equal to the fourth preset threshold, determining whether the positive electrode current change value is greater than or equal to the sixth preset threshold; if the positive electrode current change value is greater than or equal to the sixth preset threshold, accumulating the second count value; determining whether the second count value is greater than the second count threshold; and if the second count value is greater than the second count threshold, generating the positive electrode current trigger signal.

[0109] In an embodiment, the processor, when executing the program instructions, implements the counting judgment based on the negative electrode current, the fifth preset threshold and the seventh preset threshold, and when the third count value is greater than the third count threshold, generates the negative electrode current trigger signal in the step of generating the negative electrode current trigger signal, and the implementation is as follows:

[0110] determining whether the negative electrode current is greater than or equal to the fifth preset threshold; if the negative electrode current is greater than or equal to the fifth preset threshold, determining whether the negative electrode current change value is greater than or equal to the seventh preset threshold; if the negative electrode current change value is greater than or equal to the seventh preset threshold, accumulating the third count value; determining whether the third count value is greater than the third count threshold; and if the third count value is greater than the third count threshold, generating the negative electrode current trigger signal.

[0111] The storage medium can be a U disk, a mobile hard disk, a read-only memory (ROM), a magnetic disk or an optical disk, and various computer readable storage media that can store program codes.

[0112] Those skilled in the art can realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be realized in electronic hardware, computer software or a combination of both. In order to clearly illustrate the interchangeability of hardware and software, the components and steps of each example have been described in the above description in general terms. Whether the functions are realized in hardware or software depends on the specific application and design constraints of the technical solution. The skilled person can use different methods to realize the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0113] In several embodiments provided by the present application, it should be understood that the disclosed apparatus and method can be implemented in other manners. For example, the embodiments of the apparatus described above are merely schematic. For example, the division of the units is merely a logical function division. For example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In this way, the inventive idea can be implemented.

[0114] The steps in the method embodiments of the present application can be adjusted, combined and deleted in sequence according to actual needs. The units in the apparatus embodiments of the present application can be combined, divided and deleted according to actual needs. In addition, each functional unit in each embodiment of the present application can be integrated in one processing unit, or each unit can exist physically, or two or more units can be integrated in one unit.

[0115] The integrated unit, if realized in the form of a software functional unit and sold or used as an independent product, can be stored in a storage medium. Based on such understanding, the technical solutions of the present application essentially or say the part of the prior art that makes a contribution, or the whole or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a plurality of instructions for causing an electronic device (which can be a personal computer, a terminal or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application.

[0116] The above description is merely a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the present application, and these modifications or replacements should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A safety protection control method for a light storage and charging station system, characterized by, The method is applied to a signal acquisition controller of a photovoltaic storage and charging station system, the photovoltaic storage and charging station comprises a plurality of branch circuits, each of the branch circuits is provided with a signal measurement sensor, and the signal measurement sensors are in communication connection with the signal acquisition controller; wherein the signal measurement sensors comprise a leakage current sensor and a current sensor; the method comprises: acquiring current data collected by the signal measurement sensor in a timely manner; wherein the current data comprises leakage current collected by the leakage current sensor and positive and negative node currents collected by the current sensor; analyzing the current data according to a preset first safety protection strategy to determine whether the current data meets a first current trigger condition; analyzing the positive and negative node currents according to a preset second safety protection strategy to determine whether the positive and negative node currents meet a second current trigger condition; if the current data meets the first current trigger condition and / or the positive and negative node currents meet the second current trigger condition, a corresponding branch circuit trigger signal is generated to perform a tripping operation on the corresponding branch circuit; the analyzing the current data according to a preset first safety protection strategy to determine whether the current data meets a first current trigger condition comprises: calculating a deviation value of the leakage current and the positive and negative node currents, and determining whether the deviation value is greater than or equal to a first preset threshold value; if the deviation value is greater than or equal to the first preset threshold value, determining whether a leakage current change value is greater than or equal to a second preset threshold value; if the leakage current change value is greater than or equal to the second preset threshold value, analyzing the leakage current and the positive and negative node currents by a leakage current evaluation model to obtain a leakage current prediction value; based on the leakage current prediction value, the leakage current and a third preset threshold value, performing a counting determination, and when a first counting value is greater than a first counting threshold value, it is determined that the current data meets the first current trigger condition; the positive and negative node currents comprise positive and negative currents, and the analyzing the positive and negative node currents according to a preset second safety protection strategy to determine whether the positive and negative node currents meet a second current trigger condition comprises: based on the positive current, a fourth preset threshold value and a sixth preset threshold value, performing a counting determination, and when a second counting value is greater than a second counting threshold value, a positive current trigger signal is generated; based on the negative current, a fifth preset threshold value and a seventh preset threshold value, performing a counting determination, and when a third counting value is greater than a third counting threshold value, a negative current trigger signal is generated; if the positive current trigger signal and the negative current trigger signal are generated at the same time, it is determined that the positive and negative node currents meet the second current trigger condition.

2. The safety protection control method of the optical storage and charging station system according to claim 1, wherein, after the analyzing the positive and negative node currents according to a preset second safety protection strategy to determine whether the positive and negative node currents meet a second current trigger condition, the method further comprises: if the current data meets the first current trigger condition and / or the positive and negative node currents meet the second current trigger condition, a corresponding branch circuit identification signal is generated to mark a fault of the corresponding branch circuit.

3. The safety protection control method of the optical storage and charging station system according to claim 1, wherein, The counting judgment is performed based on the leakage current prediction value, the leakage current, and a third preset threshold value. When a first counting value is greater than a first counting threshold value, it is determined that the current data satisfies a first current trigger condition, including: If the leakage current is greater than the leakage current prediction value and the third preset threshold value at the same time, a first counting value is accumulated; It is judged whether the first counting value is greater than the first counting threshold value; If the first counting value is greater than the first counting threshold value, it is determined that the current data satisfies a first current trigger condition.

4. The safety control method of the optical storage and charging station system according to claim 1, wherein, The counting judgment is performed based on the positive electrode current, a fourth preset threshold value, and a sixth preset threshold value. When a second counting value is greater than a second counting threshold value, a positive electrode current trigger signal is generated, including: It is judged whether the positive electrode current is greater than or equal to the fourth preset threshold value; If the positive electrode current is greater than or equal to the fourth preset threshold value, it is judged whether a positive electrode current change value is greater than or equal to the sixth preset threshold value; If the positive electrode current change value is greater than or equal to the sixth preset threshold value, the second counting value is accumulated; It is judged whether the second counting value is greater than the second counting threshold value; If the second counting value is greater than the second counting threshold value, a positive electrode current trigger signal is generated.

5. The safety control method of the optical storage and charging station system according to claim 1, wherein, The counting judgment is performed based on the negative electrode current, a fifth preset threshold value, and a seventh preset threshold value. When a third counting value is greater than a third counting threshold value, a negative electrode current trigger signal is generated, including: It is judged whether the negative electrode current is greater than or equal to the fifth preset threshold value; If the negative electrode current is greater than or equal to the fifth preset threshold value, it is judged whether a negative electrode current change value is greater than or equal to the seventh preset threshold value; If the negative electrode current change value is greater than or equal to the seventh preset threshold value, the third counting value is accumulated; It is judged whether the third counting value is greater than the third counting threshold value; If the third counting value is greater than the third counting threshold value, a negative electrode current trigger signal is generated.

6. A safety protection control device for a light storage and charging station system, characterized by The device is arranged in a signal acquisition controller of a photovoltaic storage and charging station system. The photovoltaic storage and charging station includes a plurality of branch circuits. Each branch circuit is provided with a signal measurement sensor. The signal measurement sensors are in communication connection with the signal acquisition controller. The signal measurement sensor includes a leakage current sensor and a current sensor. The device includes: An acquisition unit is configured to acquire current data collected by the signal measurement sensor at a regular time interval. The current data includes leakage current collected by the leakage current sensor and positive and negative node currents collected by the current sensor. The positive and negative node currents include positive electrode current and negative electrode current. A first analysis unit is configured to analyze the current data according to a preset first safety protection strategy, and judge whether the current data satisfies a first current trigger condition. A second analysis unit is configured to analyze the positive and negative node currents according to a preset second safety protection strategy, and judge whether the positive and negative node currents satisfy a second current trigger condition. The generating unit is configured to generate a corresponding branch circuit triggering signal to perform a tripping operation on a corresponding branch circuit if the current data satisfies the first current triggering condition and / or the positive and negative node current satisfies the second current triggering condition. The first analysis unit is further configured to calculate a deviation value of the leakage current and the positive and negative node current, and determine whether the deviation value is greater than or equal to a first preset threshold value; if the deviation value is greater than or equal to the first preset threshold value, determine whether a leakage current change value is greater than or equal to a second preset threshold value; if the leakage current change value is greater than or equal to the second preset threshold value, analyze the leakage current and the positive and negative node current by a leakage current evaluation model to obtain a leakage current prediction value; perform counting determination based on the leakage current prediction value, the leakage current, and a third preset threshold value, and determine that the current data satisfies the first current triggering condition when a first counting value is greater than a first counting threshold value. The second analysis unit is further configured to perform counting determination based on the positive electrode current, a fourth preset threshold value, and a sixth preset threshold value, and generate a positive electrode current triggering signal when a second counting value is greater than a second counting threshold value; perform counting determination based on the negative electrode current, a fifth preset threshold value, and a seventh preset threshold value, and generate a negative electrode current triggering signal when a third counting value is greater than a third counting threshold value; and determine that the positive and negative node current satisfies the second current triggering condition if the positive electrode current triggering signal and the negative electrode current triggering signal are generated simultaneously.

7. An electronic device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that, The processor implements the safety protection control method of the optical storage and charging station system according to any one of claims 1-5 when executing the computer program.

8. A computer-readable storage medium, characterized in that, The storage medium stores a computer program, and the computer program includes program instructions which, when executed by a processor, cause the processor to execute the safety protection control method of the optical storage and charging station system according to any one of claims 1-5.

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