Remote alarm method and system for surge protection device

Abstract

The invention discloses a remote alarm method and system for a surge protection device, relates to the technical field of surge protection devices, and solves the technical problems of low cooling efficiency and poor cooling failure early warning timeliness of a cooling method of the surge protection device. According to the technical scheme, the method comprises the steps of constructing a stage cooling polar coordinate point according to stage cooling temperature and stage cooling speed, calculating a vector difference value between an adjacent cooling vector set and a target cooling vector, identifying the optimal cooling power, constructing a surge cooling comparison table according to surge current and the optimal cooling power, and judging whether the current average surge current is stable or not. If the real-time surge regulation temperature is not stable, stage cooling is carried out on the current surge protection device, if the real-time surge regulation temperature is stable, direct cooling is carried out on the current surge protection device, whether the real-time surge regulation temperature is larger than a temperature alarm threshold value or not is judged, and if the real-time surge regulation temperature is larger than the temperature alarm threshold value, remote alarm is carried out. According to the invention, the problems of low cooling efficiency and poor early warning timeliness of cooling failure of a current cooling method for the surge protection device can be solved.

Description

Technical Field

[0001] The present application relates to the technical field of surge protectors, and in particular to a remote alarm method and system for surge protectors. Background Art

[0002] With the widespread use of modern electronic devices, lightning and other transient overvoltages pose a serious threat to the safe operation of equipment. As an important lightning protection device, surge protection devices (SPDs) are widely used in homes and industrial fields.

[0003] Transient events such as lightning or transient overvoltages can cause the zinc oxide varistor inside a surge protector to heat up. If the heat isn't dissipated quickly, it accelerates aging and can even cause thermal collapse when the temperature exceeds its limit. Currently, surge protectors are primarily cooled using semiconductor cooling chips. However, this cooling process doesn't adapt the cooling power to the actual surge current within the device, and a comprehensive cooling failure alarm process isn't established. Consequently, current cooling methods for surge protectors suffer from low cooling efficiency and ineffective warnings of cooling failure. Summary of the Invention

[0004] The present application provides a remote alarm method and system for a surge protector, the technical purpose of which is to improve the cooling efficiency of the surge protector cooling method and enhance the timeliness of the early warning of its cooling failure.

[0005] The above technical objectives of this application are achieved through the following technical solutions:

[0006] A remote alarm method for a surge protector, comprising:

[0007] Step S1: performing a heating test on a pre-built surge protector according to a surge current to obtain a heating test curve and a heating surge protector;

[0008] Step S2: obtaining the cooling power of the cooling plate, performing a cooling test on the heating surge protector according to the heating test curve and the cooling power of the cooling plate, and obtaining a cooling test curve;

[0009] Step S3: sequentially obtaining the stage cooling temperature and the stage cooling rate in the cooling test curve according to the preset sampling time interval, constructing the stage cooling polar coordinate points according to the stage cooling temperature and the stage cooling rate to obtain the stage cooling polar coordinate point set; constructing the adjacent cooling vector set and the target cooling vector according to the stage cooling polar coordinate point set; calculating the vector difference between the adjacent cooling vector set and the target cooling vector according to the pre-constructed difference formula to obtain the vector difference set; obtaining the optimal cooling power corresponding to the minimum vector difference in the vector difference set, and constructing a surge cooling comparison table according to the surge current and the optimal cooling power;

[0010] Step S4: obtaining the current average surge current of the current surge protector;

[0011] Step S5: Determine whether the current average surge current is stable; if so, directly cool down the current surge protector according to the current average surge current and the surge cooling comparison table, and monitor the real-time surge regulation temperature; if not, cool down the current surge protector in stages according to the current average surge current and the surge cooling comparison table, and monitor the real-time surge regulation temperature;

[0012] Step S6: Determine whether the real-time surge regulation temperature is greater than a preset temperature alarm threshold; if so, issue a remote alarm; if not, return to step S4.

[0013] Furthermore, the step S1 includes:

[0014] Step S11: performing a surge test on the surge protector according to a preset surge frequency and surge current to obtain a real-time test surge protector, detecting a real-time surge test temperature of the real-time test surge protector, and performing temperature change curve fitting according to the real-time surge test temperature to obtain a real-time surge test curve; wherein the horizontal axis of the real-time surge test curve represents the surge test time, and the vertical axis represents the real-time surge test temperature;

[0015] Step S12: determining whether the real-time surge test temperature is greater than the temperature alarm threshold, if so, proceeding to step S13, otherwise proceeding to step S11;

[0016] Step S13: using the real-time surge test curve as a heating test curve, and using the real-time test surge protector as a heating surge protector.

[0017] Furthermore, the step S2 includes:

[0018] Step S21: performing a continuous cooling test on the heating surge protector according to the cooling power of the cooling plate, then detecting a real-time cooling test temperature according to the heating test curve, and drawing a real-time cooling test curve according to the real-time cooling test temperature;

[0019] Step S22: obtaining the current ambient temperature and determining whether the real-time cooling test temperature is lower than the current ambient temperature. If yes, proceed to step S23; otherwise, proceed to step S21.

[0020] Step S23: using the real-time cooling test curve as the cooling test curve.

[0021] Furthermore, in step S3, constructing the stage cooling polar coordinate points according to the stage cooling temperature and the stage cooling speed includes:

[0022] The temperature-diameter ratio coefficient is calculated based on the preset diameter threshold and stage temperature drop threshold, which is expressed as:

[0023]

[0024] Among them, α represents the temperature-diameter proportional coefficient, ΔT represents the stage cooling threshold, and L represents the diameter threshold;

[0025] The stage cooling diameter is calculated based on the stage cooling temperature and the temperature diameter ratio coefficient, which can be expressed as:

[0026] l=α×Δt

[0027] Among them, l represents the stage cooling diameter, Δt represents the stage cooling temperature;

[0028] The temperature-speed polar angle proportional coefficient is calculated based on the preset polar angle threshold and stage temperature-speed threshold, which is expressed as:

[0029]

[0030] Among them, β represents the temperature-velocity polar angle proportional coefficient, π represents the circumference of the circle, and Δv represents the temperature-velocity polar angle proportional coefficient;

[0031] The stage cooling angle is calculated based on the stage cooling rate and the temperature-speed angle ratio coefficient, which can be expressed as:

[0032] θ=β×Δv

[0033] Among them, θ represents the stage cooling angle, Δv represents the stage cooling speed;

[0034] The stage cooling polar coordinate point is determined according to the stage cooling polar diameter and the stage cooling polar angle.

[0035] Furthermore, the step S4 includes:

[0036] Obtain the current surge current set and calculate the current average surge current based on the current surge current set, which is expressed as:

[0037]

[0038] in, Indicates that the current time is t J The current average surge current at the time, P represents the number of surge currents concentrated in the current surge current, I p Indicates the pth surge current in the current surge current concentration.

[0039] Furthermore, in step S5, determining whether the current average surge current is stable includes:

[0040] Obtaining the current average surge current at each detection moment to obtain a current average surge current set;

[0041] Calculate the fluctuation value of the current average surge current set using a pre-built fluctuation formula;

[0042] It is judged whether the fluctuation value is greater than a preset fluctuation threshold value. If so, the current average surge current is unstable; otherwise, the current average surge current is stable.

[0043] Furthermore, the fluctuation formula is expressed as:

[0044]

[0045] Among them, δ represents the fluctuation value, Indicates that the current time is t J-1 The current average surge current at the time of detection is J, and the total number of average surge current detections is J.

[0046] Furthermore, in step S5, the current surge protector is directly cooled according to the current average surge current and the surge cooling comparison table, including: querying the direct cooling power corresponding to the current average surge current in the surge cooling comparison table, and then cooling the current surge protector according to the direct cooling power.

[0047] Furthermore, in step S5, the current surge protector is cooled in stages according to the current average surge current and the surge cooling comparison table, including:

[0048] Step S511: querying the stage cooling power corresponding to the current average surge current in the surge cooling comparison table;

[0049] Step S512: performing stage cooling on the current surge protector according to the stage cooling power, and obtaining the next stage average surge current of the current average surge current;

[0050] Step S513: determine whether the average surge current in the next stage is less than the preset surge current extreme value. If so, complete the stage cooling; if not, update the current average surge current to the average surge current in the next stage, and return to step S511.

[0051] A remote alarm system for a surge protector, comprising:

[0052] A heating test module performs a heating test on a pre-built surge protector according to a surge current to obtain a heating test curve and a heating surge protector;

[0053] A cooling test module obtains the cooling power of the cooling plate, performs a cooling test on the heating surge protector according to the heating test curve and the cooling power of the cooling plate, and obtains a cooling test curve;

[0054] The surge cooling comparison table construction module sequentially obtains the stage cooling temperature and stage cooling rate in the cooling test curve according to the preset sampling time interval, constructs the stage cooling polar coordinate points according to the stage cooling temperature and the stage cooling rate, and obtains the stage cooling polar coordinate point set; constructs the adjacent cooling vector set and the target cooling vector according to the stage cooling polar coordinate point set; calculates the vector difference between the adjacent cooling vector set and the target cooling vector according to the pre-constructed difference formula to obtain the vector difference set; obtains the optimal cooling power corresponding to the minimum vector difference in the vector difference set, and constructs the surge cooling comparison table according to the surge current and the optimal cooling power;

[0055] The acquisition module obtains the current average surge current of the current surge protector;

[0056] The first judgment module judges whether the current average surge current is stable. If so, it switches to the direct cooling module. If not, it switches to the stage cooling module.

[0057] Direct cooling module, which directly cools down the current surge protector according to the current average surge current and surge cooling comparison table, and monitors the real-time surge regulation temperature;

[0058] The stage cooling module performs stage cooling on the current surge protector according to the current average surge current and the surge cooling comparison table, and monitors the real-time surge regulation temperature;

[0059] The second judgment module judges whether the real-time surge regulation temperature is greater than a preset temperature alarm threshold. If so, it is transferred to the remote alarm module, otherwise it is transferred to the acquisition module;

[0060] Remote alarm module for remote alarm.

[0061] The beneficial effects of the present application are as follows: the remote alarm method and system for the surge protector described in the present application performs a heating test on the pre-constructed surge protector according to the surge current to obtain a heating test curve and a heating surge protector. The cooling power of the refrigeration plate is obtained, and a cooling test is performed on the heating surge protector according to the heating test curve and the cooling power of the refrigeration plate to obtain a cooling test curve. According to the preset sampling time interval, the stage cooling temperature and the stage cooling speed are sequentially obtained in the cooling test curve, and the stage cooling polar coordinate points are constructed according to the stage cooling temperature and the stage cooling speed to obtain a stage cooling polar coordinate point set; an adjacent cooling vector set and a target cooling vector are constructed according to the stage cooling polar coordinate point set; the vector difference between the adjacent cooling vector set and the target cooling vector is calculated according to the pre-constructed difference formula to obtain a vector difference set; the optimal cooling power corresponding to the minimum vector difference in the vector difference set is obtained, and a surge cooling comparison table is constructed according to the surge current and the optimal cooling power. The current average surge current of the current surge protector is obtained. Determine whether the current average surge current is stable. If so, directly cool the current surge protector according to the current average surge current and the surge cooling comparison table, and monitor the real-time surge regulation temperature. If not, perform phased cooling on the current surge protector according to the current average surge current and the surge cooling comparison table, and monitor the real-time surge regulation temperature. Determine whether the real-time surge regulation temperature is greater than the preset temperature alarm threshold. If so, issue a remote alarm. If not, continue to obtain the current average surge current of the current surge protector.

[0062] In summary, the present application improves the cooling efficiency of the surge protector cooling method and enhances the timeliness of warning of cooling failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] Figure 1 A flowchart of a remote alarm method for a surge protector provided in one embodiment of the present application;

[0064] Figure 2 This is a functional module diagram of a remote alarm system for a surge protector provided by one embodiment of the present invention. DETAILED DESCRIPTION

[0065] The technical solution of this application will be described in detail below with reference to the accompanying drawings.

[0066] The embodiments of the present application provide a remote alarm method for a surge protector. The remote alarm method for a surge protector may be performed by at least one of electronic devices, such as a server or a terminal, that can be configured to perform the method provided by the embodiments of the present application. In other words, the remote alarm method for a surge protector may be performed by software or hardware installed on a terminal device or a server device, where the software may be a blockchain platform. The server may include, but is not limited to, a single server, a server cluster, a cloud server, or a cloud server cluster.

[0067] Figure 1 This is a flow chart of a remote alarm method for a surge protector provided in one embodiment of the present invention. In this embodiment, the remote alarm method for a surge protector includes:

[0068] Step S1: performing a heating test on a pre-built surge protector according to a surge current to obtain a heating test curve and a heating surge protector.

[0069] Specifically, the surge currents may be extracted sequentially from a preset surge current set.

[0070] A surge current set is a pre-set set of instantaneous currents used to simulate a surge protector under the influence of lightning electromagnetic pulses and various overvoltages. A thermal test curve shows the real-time surge test temperature of a surge protector under surge current, as a function of the test duration. Real-time surge test temperature refers to the real-time temperature of the surge protector during the thermal test. A thermal surge protector is a surge protector at the end of the thermal test.

[0071] Preferably, the step S1 includes:

[0072] Step S11: performing a surge test on the surge protector according to a preset surge frequency and surge current to obtain a real-time test surge protector, detecting a real-time surge test temperature of the real-time test surge protector, and performing temperature change curve fitting according to the real-time surge test temperature to obtain a real-time surge test curve; wherein the horizontal axis of the real-time surge test curve represents the surge test time, and the vertical axis represents the real-time surge test temperature;

[0073] Step S12: determining whether the real-time surge test temperature is greater than the temperature alarm threshold, if so, proceeding to step S13, otherwise proceeding to step S11;

[0074] Step S13: using the real-time surge test curve as a heating test curve, and using the real-time test surge protector as a heating surge protector.

[0075] It is understandable that the surge frequency refers to the number of times the surge current passes through the zinc oxide varistor in the surge protector per unit time when performing a surge test. The surge frequency can be set by the user according to the actual application scenario of the surge protector. For example: in the actual application scenario, the surge protector generates surge currents at the 2nd, 6th, 10th, 12th and 15th seconds after the lightning occurs. The frequency of the surge current generated by the surge protector due to lightning is approximately 5 / 15. The surge frequency can be set to generate a surge current through the surge protector every 3 seconds. It is understandable that the temperature alarm threshold refers to the temperature value at which the surge protector needs to perform a temperature alarm. The temperature alarm threshold can be 65°C.

[0076] Step S2: obtaining the cooling power of the cooling plate, performing a cooling test on the heating surge protector according to the heating test curve and the cooling power of the cooling plate, and obtaining a cooling test curve.

[0077] Specifically, the cooling power of the refrigeration plate is extracted sequentially from the cooling power set of the refrigeration plate.

[0078] The cooling power set for the cooling element refers to a cooling power set for cooling the heating surge protector. A semiconductor cooling element can be used to cool the heating surge protector. The cooling test refers to testing the relationship between the temperature and time of the heating surge protector after cooling is completed at a certain cooling power. The cooling test curve refers to a curve showing the relationship between the temperature and time of the heating surge protector during the cooling test.

[0079] Preferably, step S2 includes:

[0080] Step S21: performing a continuous cooling test on the heating surge protector according to the cooling power of the cooling plate, then detecting a real-time cooling test temperature according to the heating test curve, and drawing a real-time cooling test curve according to the real-time cooling test temperature;

[0081] Step S22: obtaining the current ambient temperature and determining whether the real-time cooling test temperature is lower than the current ambient temperature. If yes, proceed to step S23; otherwise, proceed to step S21.

[0082] Step S23: using the real-time cooling test curve as the cooling test curve.

[0083] It is understood that the current ambient temperature refers to the operating ambient temperature of the heating surge protector. When the real-time cooling test temperature is lower than the current ambient temperature, the cooling test is completed. Detecting the real-time cooling test temperature based on the heating test curve refers to identifying the final heating temperature of the heating test curve, and then detecting the real-time cooling test temperature starting from the final heating temperature, thereby ensuring the continuity between the heating test curve and the real-time cooling test curve.

[0084] Step S3: According to the preset sampling time interval, the stage cooling temperature and the stage cooling rate are obtained in sequence in the cooling test curve, and the stage cooling polar coordinate points are constructed according to the stage cooling temperature and the stage cooling rate to obtain the stage cooling polar coordinate point set; the adjacent cooling vector set and the target cooling vector are constructed according to the stage cooling polar coordinate point set; the vector difference between the adjacent cooling vector set and the target cooling vector is calculated according to the pre-constructed difference formula to obtain the vector difference set; the optimal cooling power corresponding to the minimum vector difference in the vector difference set is obtained, and a surge cooling comparison table is constructed according to the surge current and the optimal cooling power.

[0085] Specifically, the sampling time interval can be 1 minute. The stage cooling temperature refers to the cooling temperature of the heating surge protector within each minute during the cooling test process, and the stage cooling rate refers to the cooling rate of the heating surge protector within each minute during the cooling test process. For example, when the real-time cooling test temperature of the cooling test curve at 0 min is 55°C, the real-time cooling test temperature at 1 min is 50°C, the real-time cooling test temperature at 2 min is 42°C, and the real-time cooling test temperature at 3 min is 30°C, then the stage cooling temperature within 0-1 min is 5°C, and the stage cooling rate is 5°C / min; the stage cooling temperature within 1-2 min is 8°C, and the stage cooling rate is 8°C / min; the stage cooling temperature within 2-3 min is 12°C, and the stage cooling rate is 12°C / min.

[0086] The stage cooling polar coordinate point refers to a polar coordinate point representing the stage cooling temperature and stage cooling speed of each cooling stage. The polar angle of the stage cooling polar coordinate point represents the stage cooling speed, and the polar diameter represents the stage cooling temperature.

[0087] Preferably, in step S3, constructing the stage cooling polar coordinate points according to the stage cooling temperature and the stage cooling speed includes:

[0088] The temperature-diameter ratio coefficient is calculated based on the preset diameter threshold and stage temperature drop threshold, which is expressed as:

[0089]

[0090] Among them, α represents the temperature-diameter proportional coefficient, ΔT represents the stage cooling threshold, and L represents the diameter threshold;

[0091] The stage cooling diameter is calculated based on the stage cooling temperature and the temperature diameter ratio coefficient, which can be expressed as:

[0092] l=α×Δt

[0093] Among them, l represents the stage cooling diameter, Δt represents the stage cooling temperature;

[0094] The temperature-speed polar angle proportional coefficient is calculated based on the preset polar angle threshold and stage temperature-speed threshold, which is expressed as:

[0095]

[0096] Among them, β represents the temperature-velocity polar angle proportional coefficient, π represents the circumference of the circle, and Δv represents the temperature-velocity polar angle proportional coefficient;

[0097] The stage cooling angle is calculated based on the stage cooling rate and the temperature-speed angle ratio coefficient, which can be expressed as:

[0098] θ=β×Δv

[0099] Among them, θ represents the stage cooling angle, Δv represents the stage cooling speed;

[0100] The stage cooling polar coordinate point is determined according to the stage cooling polar diameter and the stage cooling polar angle.

[0101] Specifically, the stage cooling polar diameter refers to the polar diameter after the stage cooling temperature is converted through the polar diameter, and the stage cooling polar angle refers to the polar angle after the stage cooling speed is converted through the polar angle.

[0102] Specifically, the adjacent cooling coordinate points refer to two adjacent polar coordinate points in a polar coordinate system, and the adjacent cooling vector refers to a vector constructed from the adjacent cooling coordinate points. The adjacent cooling vector is oriented from the polar coordinate point with a higher temperature to the polar coordinate point with a lower temperature. An initial cooling polar coordinate point and an ending cooling polar coordinate point are identified in the stage cooling polar coordinate point set, and a target cooling vector is constructed based on the initial cooling polar coordinate point and the ending cooling polar coordinate point.

[0103] Specifically, the initial cooling polar coordinate point refers to the first polar coordinate point in the stage cooling polar coordinate point set, and the terminal cooling polar coordinate point refers to the last polar coordinate point in the stage cooling polar coordinate point set. The stage cooling polar coordinate points in the stage cooling polar coordinate point set are sorted in order of cooling time. The target cooling vector refers to the directed line segment from the initial cooling polar coordinate point to the terminal cooling polar coordinate point.

[0104] Specifically, the vector difference refers to the difference in vector module length between the adjacent cooling vector set and the target cooling vector. The vector difference set refers to a set of vector differences under the cooling power of each refrigeration plate.

[0105] In detail, the difference formula is as follows:

[0106]

[0107] Among them, δ represents the vector difference, I represents the number of vectors in the adjacent cooling vector set, and |*| represents the modulus symbol. represents the modulus of the i-th adjacent cooling vector, Indicates the modulus of the target cooling vector.

[0108] Specifically, the optimal cooling power refers to the cooling power of the cooling plate corresponding to the minimum vector difference. The surge cooling comparison table refers to a table of correspondence between surge current and its optimal cooling power.

[0109] Step S4: obtaining the current average surge current of the current surge protector.

[0110] Specifically, the current average surge current refers to the average surge current under the actual operating environment of the surge protector. For example, if there are three surge currents passing through the surge protector during a thunderstorm, with the first surge current being 50kA, the second being 40kA, and the third being 10kA, then the current average surge current is 100kA / 3.

[0111] Preferably, step S4 includes:

[0112] Obtain the current surge current set and calculate the current average surge current based on the current surge current set, which is expressed as:

[0113]

[0114] in, Indicates that the current time is t J The current average surge current at the time, P represents the number of surge currents concentrated in the current surge current, I p Indicates the pth surge current in the current surge current concentration.

[0115] Step S5: Determine whether the current average surge current is stable; if so, directly cool the current surge protector according to the current average surge current and the surge cooling comparison table, and monitor the real-time surge regulation temperature; if not, cool the current surge protector in stages according to the current average surge current and the surge cooling comparison table, and monitor the real-time surge regulation temperature.

[0116] Preferably, in step S5, determining whether the current average surge current is stable includes:

[0117] Obtaining the current average surge current at each detection moment to obtain a current average surge current set;

[0118] Calculate the fluctuation value of the current average surge current set using a pre-built fluctuation formula;

[0119] It is judged whether the fluctuation value is greater than a preset fluctuation threshold value. If so, the current average surge current is unstable; otherwise, the current average surge current is stable.

[0120] It can be explained that the detection time refers to the time when the average surge current is calculated. The interval between each detection time can be 5 minutes. For example, when the detection time is 7:00 (the surge occurs before 7:00), the surge currents are 50kA, 40kA, and 10kA respectively; when the detection time is 7:05, the surge currents are 50kA, 40kA, 10kA, 20kA, and 10kA respectively; when the detection time is 7:10, the surge currents are 50kA, 40kA, 10kA, 20kA, 10kA, 20kA, and 30kA respectively. Then, the current average surge current at 7:00 is 100kA / 3, the current average surge current at 7:05 is 30kA / 2, and the current average surge current at 7:10 is 50kA / 2. The fluctuation threshold can be set by the user. The smaller the fluctuation threshold, the higher the stability requirement for the current average surge current.

[0121] As a specific embodiment, the fluctuation formula is expressed as:

[0122]

[0123] Among them, δ represents the fluctuation value, Indicates that the current time is t J-1 The current average surge current at the time of detection is J, and the total number of average surge current detections is J.

[0124] Preferably, in step S5, the current surge protector is directly cooled according to the current average surge current and the surge cooling comparison table, including: querying the direct cooling power corresponding to the current average surge current in the surge cooling comparison table, and then cooling the current surge protector according to the direct cooling power.

[0125] Preferably, in step S5, the current surge protector is cooled in stages according to the current average surge current and the surge cooling comparison table, including:

[0126] Step S511: querying the stage cooling power corresponding to the current average surge current in the surge cooling comparison table;

[0127] Step S512: performing stage cooling on the current surge protector according to the stage cooling power, and obtaining the next stage average surge current of the current average surge current;

[0128] Step S513: determine whether the average surge current in the next stage is less than the preset surge current extreme value. If so, complete the stage cooling; if not, update the current average surge current to the average surge current in the next stage, and return to step S511.

[0129] It is understandable that the stage cooling refers to cooling the current surge protector in stages according to different cooling powers of the cooling plate. The real-time surge adjustment temperature refers to the real-time temperature of the surge protector during the stage cooling process.

[0130] Furthermore, the average surge current in the next stage refers to the average surge current from the current moment to the next detection moment. For example, when the detection moment is 7:00 (a surge occurs before 7:00), the surge currents generated are 50kA, 40kA, and 10kA respectively; when the detection moment is 7:05, the surge currents generated are 50kA, 40kA, 10kA, 20kA, and 10kA respectively, then the average surge current in the next stage is 30kA / 2. When the average surge current in the next stage is less than the preset surge current extreme value, it indicates that lightning will no longer generate surge current through the surge protector. The surge current extreme value refers to the current value at which the surge is judged to have ended.

[0131] Step S6: Determine whether the real-time surge regulation temperature is greater than a preset temperature alarm threshold; if so, issue a remote alarm; if not, return to step S4.

[0132] It is understandable that when the real-time surge regulation temperature is greater than the temperature alarm threshold, it indicates that the surge protector has no effective cooling effect, and therefore, a remote alarm is required.

[0133] Figure 2 This is a functional block diagram of a remote alarm system for a surge protector provided in one embodiment of the present invention. The remote alarm system for a surge protector described herein can be installed in an electronic device. The remote alarm system includes a heating test module, a cooling test module, a surge cooling comparison table construction module, an acquisition module, a first determination module, a direct cooling module, a staged cooling module, a second determination module, and a remote alarm module.

[0134] Specifically, the heating test module is used to perform a heating test on a pre-built surge protector according to a surge current to obtain a heating test curve and a heating surge protector.

[0135] The cooling test module is used to obtain the cooling power of the cooling plate, and perform a cooling test on the heating surge protector according to the heating test curve and the cooling power of the cooling plate to obtain a cooling test curve.

[0136] The surge cooling comparison table construction module is used to obtain the stage cooling temperature and the stage cooling rate in the cooling test curve in sequence according to the preset sampling time interval, construct the stage cooling polar coordinate points according to the stage cooling temperature and the stage cooling rate, and obtain the stage cooling polar coordinate point set; construct the adjacent cooling vector set and the target cooling vector according to the stage cooling polar coordinate point set; calculate the vector difference between the adjacent cooling vector set and the target cooling vector according to the pre-constructed difference formula to obtain the vector difference set; obtain the optimal cooling power corresponding to the minimum vector difference in the vector difference set, and construct the surge cooling comparison table according to the surge current and the optimal cooling power.

[0137] The acquisition module is used to obtain the current average surge current of the current surge protector.

[0138] The first determination module is used to determine whether the current average surge current is stable. If so, the module switches to the direct cooling module; otherwise, the module switches to the staged cooling module.

[0139] The direct cooling module is used to directly cool the current surge protector according to the current average surge current and the surge cooling comparison table, and monitor the real-time surge regulation temperature.

[0140] The stage cooling module is used to perform stage cooling on the current surge protector according to the current average surge current and the surge cooling comparison table, and monitor the real-time surge regulation temperature.

[0141] The second judgment module is used to judge whether the real-time surge regulation temperature is greater than a preset temperature alarm threshold. If so, the method is transferred to the remote alarm module; otherwise, the method is transferred to the acquisition module.

[0142] The remote alarm module is used for remote alarm.

[0143] The modules described as separate components may or may not be physically separate, and the components shown as modules may or may not be physical units, that is, they may be located in one place or distributed across multiple network elements. Some or all of the modules may be selected to achieve the purpose of the solution of this embodiment according to actual needs.

[0144] In addition, the functional modules in various embodiments of the present invention may be integrated into a single processing unit, each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or hardware plus software functional modules.

[0145] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

[0146] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A remote alarm method for a surge protector, characterized in that: include: Step S1: performing a heating test on a pre-built surge protector according to a surge current to obtain a heating test curve and a heating surge protector; Step S2: obtaining the cooling power of the cooling plate, performing a cooling test on the heating surge protector according to the heating test curve and the cooling power of the cooling plate, and obtaining a cooling test curve; Step S3: sequentially obtaining the stage cooling temperature and the stage cooling rate in the cooling test curve according to the preset sampling time interval, constructing the stage cooling polar coordinate points according to the stage cooling temperature and the stage cooling rate to obtain the stage cooling polar coordinate point set; constructing the adjacent cooling vector set and the target cooling vector according to the stage cooling polar coordinate point set; calculating the vector difference between the adjacent cooling vector set and the target cooling vector according to the pre-constructed difference formula to obtain the vector difference set; obtaining the optimal cooling power corresponding to the minimum vector difference in the vector difference set, and constructing a surge cooling comparison table according to the surge current and the optimal cooling power; Step S4: obtaining the current average surge current of the current surge protector; Step S5: Determine whether the current average surge current is stable; if so, directly cool down the current surge protector according to the current average surge current and the surge cooling comparison table, and monitor the real-time surge regulation temperature; if not, cool down the current surge protector in stages according to the current average surge current and the surge cooling comparison table, and monitor the real-time surge regulation temperature; Step S6: Determine whether the real-time surge regulation temperature is greater than a preset temperature alarm threshold; if so, issue a remote alarm; if not, return to step S4.

2. The remote alarm method according to claim 1, wherein: The step S1 comprises: Step S11: performing a surge test on the surge protector according to a preset surge frequency and surge current to obtain a real-time test surge protector, detecting a real-time surge test temperature of the real-time test surge protector, and performing temperature change curve fitting according to the real-time surge test temperature to obtain a real-time surge test curve; wherein the horizontal axis of the real-time surge test curve represents the surge test time, and the vertical axis represents the real-time surge test temperature; Step S12: determining whether the real-time surge test temperature is greater than the temperature alarm threshold, if so, proceeding to step S13, otherwise proceeding to step S11; Step S13: using the real-time surge test curve as a heating test curve, and using the real-time test surge protector as a heating surge protector.

3. The remote alarm method according to claim 2, wherein: The step S2 comprises: Step S21: performing a continuous cooling test on the heating surge protector according to the cooling power of the cooling plate, then detecting a real-time cooling test temperature according to the heating test curve, and drawing a real-time cooling test curve according to the real-time cooling test temperature; Step S22: obtaining the current ambient temperature and determining whether the real-time cooling test temperature is lower than the current ambient temperature. If yes, proceed to step S23; otherwise, proceed to step S21. Step S23: using the real-time cooling test curve as the cooling test curve.

4. The remote alarm method according to claim 3, wherein: In step S3, constructing the stage cooling polar coordinate points according to the stage cooling temperature and the stage cooling speed includes: The temperature-diameter ratio coefficient is calculated based on the preset diameter threshold and stage temperature drop threshold, which is expressed as: Among them, α represents the temperature-diameter proportional coefficient, ΔT represents the stage cooling threshold, and L represents the diameter threshold; The stage cooling diameter is calculated based on the stage cooling temperature and the temperature diameter ratio coefficient, which can be expressed as: l=α×Δt Among them, l represents the stage cooling diameter, Δt represents the stage cooling temperature; The temperature-speed polar angle proportional coefficient is calculated based on the preset polar angle threshold and stage temperature-speed threshold, which is expressed as: Among them, β represents the temperature-velocity polar angle proportional coefficient, π represents the circumference of the circle, and Δv represents the temperature-velocity polar angle proportional coefficient; The stage cooling angle is calculated based on the stage cooling rate and the temperature-speed angle ratio coefficient, which can be expressed as: θ=β×Δv Among them, θ represents the stage cooling angle, Δv represents the stage cooling speed; The stage cooling polar coordinate point is determined according to the stage cooling polar diameter and the stage cooling polar angle.

5. The remote alarm method according to claim 4, characterized in that: The step S4 comprises: Obtain the current surge current set and calculate the current average surge current based on the current surge current set, which is expressed as: in, Indicates that the current time is t J The current average surge current at the time, P represents the number of surge currents concentrated in the current surge current, I p Indicates the pth surge current in the current surge current concentration.

6. The remote alarm method according to claim 5, characterized in that: In step S5, determining whether the current average surge current is stable includes: Obtaining the current average surge current at each detection moment to obtain a current average surge current set; Calculate the fluctuation value of the current average surge current set using a pre-built fluctuation formula; It is judged whether the fluctuation value is greater than a preset fluctuation threshold value. If so, the current average surge current is unstable; otherwise, the current average surge current is stable.

7. The remote alarm method according to claim 6, characterized in that: The fluctuation formula is expressed as: Among them, δ represents the fluctuation value, Indicates that the current time is t J-1 The current average surge current at the time of detection is J, and the total number of average surge current detections is J.

8. The remote alarm method according to claim 7, wherein: In step S5, the current surge protector is directly cooled according to the current average surge current and the surge cooling comparison table, including: querying the direct cooling power corresponding to the current average surge current in the surge cooling comparison table, and then cooling the current surge protector according to the direct cooling power.

9. The remote alarm method according to claim 8, wherein: In step S5, the current surge protector is cooled in stages according to the current average surge current and the surge cooling comparison table, including: Step S511: querying the stage cooling power corresponding to the current average surge current in the surge cooling comparison table; Step S512: performing stage cooling on the current surge protector according to the stage cooling power, and obtaining the next stage average surge current of the current average surge current; Step S513: determine whether the average surge current in the next stage is less than the preset surge current extreme value. If so, complete the stage cooling; if not, update the current average surge current to the average surge current in the next stage, and return to step S511.

10. A remote alarm system for a surge protector, the remote alarm system being used in the remote alarm method according to any one of claims 1 to 9, characterized in that: include: A heating test module performs a heating test on a pre-built surge protector according to a surge current to obtain a heating test curve and a heating surge protector; A cooling test module obtains the cooling power of the cooling plate, performs a cooling test on the heating surge protector according to the heating test curve and the cooling power of the cooling plate, and obtains a cooling test curve; The surge cooling comparison table construction module sequentially obtains the stage cooling temperature and stage cooling rate in the cooling test curve according to the preset sampling time interval, constructs the stage cooling polar coordinate points according to the stage cooling temperature and the stage cooling rate, and obtains the stage cooling polar coordinate point set; constructs the adjacent cooling vector set and the target cooling vector according to the stage cooling polar coordinate point set; calculates the vector difference between the adjacent cooling vector set and the target cooling vector according to the pre-constructed difference formula to obtain the vector difference set; obtains the optimal cooling power corresponding to the minimum vector difference in the vector difference set, and constructs the surge cooling comparison table according to the surge current and the optimal cooling power; The acquisition module obtains the current average surge current of the current surge protector; The first judgment module judges whether the current average surge current is stable. If so, it switches to the direct cooling module. If not, it switches to the stage cooling module. Direct cooling module, which directly cools down the current surge protector according to the current average surge current and surge cooling comparison table, and monitors the real-time surge regulation temperature; The stage cooling module performs stage cooling on the current surge protector according to the current average surge current and the surge cooling comparison table, and monitors the real-time surge regulation temperature; The second judgment module judges whether the real-time surge regulation temperature is greater than a preset temperature alarm threshold. If so, it is transferred to the remote alarm module, otherwise it is transferred to the acquisition module; Remote alarm module for remote alarm.

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