A method and device for monitoring performance of a surge arrester, an electronic device and a storage medium

Abstract

The application discloses a lightning arrester performance monitoring method and device, electronic equipment and a storage medium. The method and device are specifically as follows: collecting leakage currents, operating voltages and a plurality of environmental parameters of each lightning arrester in a plurality of lightning arresters under the same bus and the same phase at two time points; calculating resistive current harmonic content and operating voltage harmonic content of a specific lightning arrester; then calculating resistive current harmonic content change rate, operating voltage harmonic content change rate and a plurality of environmental parameter change rates; calculating the performance index of the specific lightning arrester based on a pre-designed calculation formula for the resistive current harmonic content change rate, the operating voltage harmonic content change rate and the plurality of environmental parameter change rates; and comparing the performance index with an alarm setting value to calculate, and outputting alarm information of the specific lightning arrester according to the comparison result. The method can monitor the performance of the lightning arrester without full current, so that timely disposal measures can be taken according to the monitored performance, and power failure accidents can be avoided.

Description

Technical Field

[0001] This application relates to the field of power technology, and more specifically, to a method, apparatus, electronic device, and storage medium for monitoring the performance of a surge arrester. Background Technology

[0002] Surge arresters are crucial components of power grid lightning protection systems, used to protect AC transmission and transformation equipment from overvoltage damage caused by lightning strikes. In actual operation, surge arresters are subjected to long-term power frequency voltage, and the aging of their internal valve plates leads to temperature rise, causing performance degradation and even failure. In severe cases, they can even explode, resulting in widespread power outages. Therefore, it is necessary to monitor the performance of surge arresters.

[0003] Currently, surge arrester performance is monitored by measuring the total leakage current of the arrester and analyzing it to determine its performance. However, variations in the total current generally do not exceed 5%, making them easily masked by disturbances in the total current. Therefore, existing testing methods are ineffective in monitoring surge arrester performance. Summary of the Invention

[0004] In view of this, this application provides a method, apparatus, electronic device and storage medium for monitoring the performance of a surge arrester, so as to take measures based on the current performance to avoid power outage accidents.

[0005] To achieve the above objectives, the following solution is proposed:

[0006] A performance monitoring method for surge arresters, applied to electronic equipment, the performance monitoring method comprising the following steps:

[0007] The leakage current and operating voltage of each surge arrester under the same phase on the same busbar are collected at two time points, as well as multiple environmental parameters of each surge arrester at the two time points;

[0008] Calculate the resistive current harmonic content of the specific surge arrester based on the leakage current of the specific surge arrester, and calculate the operating voltage harmonic content of the specific surge arrester based on the operating voltage of the specific surge arrester;

[0009] The rate of change of resistive current harmonic content is calculated based on the resistive current harmonic content; the rate of change of operating voltage harmonic content is calculated based on the operating voltage harmonic content; and the rate of change of multiple environmental parameters is calculated based on the multiple environmental parameters.

[0010] The performance index of the specific surge arrester is obtained by calculating the rate of change of the resistive current harmonic content, the rate of change of the operating voltage harmonic content, and the rate of change of multiple environmental parameters based on the preset calculation formula.

[0011] The alarm information for the specific surge arrester is output based on the comparison between the performance index and the alarm setting value.

[0012] Optionally, the harmonic content includes the 1st harmonic, 3rd harmonic, 5th harmonic, 7th harmonic and 9th harmonic.

[0013] Optionally, the plurality of environmental parameters include temperature and / or humidity.

[0014] Optionally, the preset calculation formula is:

[0015]

[0016] Kz is the performance index;

[0017] Xa is the average value of the rate of change of resistive current harmonic content of the other surge arresters besides the specific surge arrester;

[0018] Xz is the rate of change of resistive current harmonic content of the specific surge arrester;

[0019] Xc is the upper limit of the rate of change of resistive current harmonic content;

[0020] Xx is the lower limit of the rate of change of resistive current harmonic content;

[0021] Xb is a set value for the rate of change of harmonic content in the operating voltage;

[0022] Xu represents the rate of change of the harmonic content of the operating voltage;

[0023] Xt represents the temperature change rate among the multiple environmental parameter change rates;

[0024] Xs is the humidity change rate among the multiple environmental parameter change rates;

[0025] K1 is the proportion coefficient of the rate of change of resistive current harmonic content of the specific surge arrester;

[0026] K2 is the proportion coefficient of the rate of change of resistive current harmonic content of other surge arresters besides the specific surge arrester;

[0027] K3 is the proportion coefficient of the rate of change of the harmonic content of the operating voltage;

[0028] K4 is the proportion coefficient of the temperature change rate;

[0029] K5 is the proportion coefficient of the humidity change rate;

[0030] K6 is the proportion coefficient of the component parameters of the specific surge arrester.

[0031] A performance monitoring device for surge arresters, applied to electronic equipment, the performance monitoring device comprising:

[0032] The parameter acquisition module is configured to acquire the leakage current and operating voltage of each of the multiple surge arresters under the same phase on the same bus at two time points, as well as multiple environmental parameters of each surge arrester at the two time points.

[0033] The first calculation module is configured to calculate the resistive current harmonic content of the specific surge arrester based on the leakage current of the specific surge arrester, and to calculate the operating voltage harmonic content of the specific surge arrester based on the operating voltage of the specific surge arrester;

[0034] The second calculation module is configured to calculate the rate of change of resistive current harmonic content based on the resistive current harmonic content, calculate the rate of change of operating voltage harmonic content based on the operating voltage harmonic content, and calculate the rate of change of multiple environmental parameters based on the multiple environmental parameters.

[0035] The third calculation module is configured to calculate the rate of change of the resistive current harmonic content, the rate of change of the operating voltage harmonic content, and the rate of change of the multiple environmental parameters based on a preset calculation formula, so as to obtain the performance index of the specific surge arrester.

[0036] The information output module is configured to compare and calculate based on the performance index and the alarm setting value, and output the alarm information of the specific surge arrester based on the comparison result.

[0037] Optionally, the harmonic content includes the 1st harmonic, 3rd harmonic, 5th harmonic, 7th harmonic and 9th harmonic.

[0038] Optionally, the plurality of environmental parameters include temperature and / or humidity.

[0039] Optionally, the preset calculation formula is:

[0040]

[0041] Kz is the performance index;

[0042] Xa is the average value of the rate of change of resistive current harmonic content of the other surge arresters besides the specific surge arrester;

[0043] Xz is the rate of change of resistive current harmonic content of the specific surge arrester;

[0044] Xc is the upper limit of the rate of change of resistive current harmonic content;

[0045] Xx is the lower limit of the rate of change of resistive current harmonic content;

[0046] Xb is a set value for the rate of change of harmonic content in the operating voltage;

[0047] Xu represents the rate of change of the harmonic content of the operating voltage;

[0048] Xt represents the temperature change rate among the multiple environmental parameter change rates;

[0049] Xs is the humidity change rate among the multiple environmental parameter change rates;

[0050] K1 is the proportion coefficient of the rate of change of resistive current harmonic content of the specific surge arrester;

[0051] K2 is the proportion coefficient of the rate of change of resistive current harmonic content of other surge arresters besides the specific surge arrester;

[0052] K3 is the proportion coefficient of the rate of change of the harmonic content of the operating voltage;

[0053] K4 is the proportion coefficient of the temperature change rate;

[0054] K5 is the proportion coefficient of the humidity change rate;

[0055] K6 is the proportion coefficient of the component parameters of the specific surge arrester.

[0056] An electronic device includes at least one processor and a memory connected to the processor, wherein:

[0057] The memory is used to store computer programs or instructions;

[0058] The processor is used to execute the computer program or instructions to enable the electronic device to implement the surge arrester performance monitoring method as described above.

[0059] A storage medium is applied to an electronic device, the storage medium carrying one or more computer programs that can be executed by the electronic device to enable the electronic device to implement the surge arrester performance monitoring method as described above.

[0060] As can be seen from the above technical solution, this application discloses a method, device, electronic device, and storage medium for monitoring the performance of surge arresters. Specifically, the method and device collect leakage current, operating voltage, and multiple environmental parameters of each surge arrester at two time points from multiple surge arresters on the same busbar and phase; calculate the resistive current harmonic content and operating voltage harmonic content of a specific surge arrester; then calculate the rate of change of resistive current harmonic content, the rate of change of operating voltage harmonic content, and the rate of change of multiple environmental parameters; calculate the rate of change of resistive current harmonic content, the rate of change of operating voltage harmonic content, and the rate of change of multiple environmental parameters based on a preset calculation formula to obtain the performance index of the specific surge arrester; compare the performance index with the alarm setting value, and output the alarm information of the specific surge arrester based on the comparison result. This solution does not require monitoring the full current of the surge arrester to achieve its performance, thus enabling timely response measures based on the monitored performance to avoid power outages. Attached Figure Description

[0061] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0062] Figure 1 This is a flowchart illustrating a method for monitoring the performance of a surge arrester according to an embodiment of this application;

[0063] Figure 2 This is a block diagram of a surge arrester performance monitoring device according to an embodiment of this application;

[0064] Figure 3 This is a block diagram of an electronic device according to an embodiment of this application. Detailed Implementation

[0065] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0066] Example 1

[0067] Figure 1 This is a flowchart illustrating a surge arrester performance monitoring method according to an embodiment of this application.

[0068] like Figure 1As shown, the performance monitoring method of this embodiment is used to monitor the performance of multiple surge arresters under the same phase on the same busbar. The performance monitoring method includes the following steps:

[0069] S1. Collect leakage current, operating voltage, and multiple environmental parameters of multiple surge arresters at two time points.

[0070] Specifically, for each surge arrester on the same busbar and in the same phase, its leakage current and operating voltage are collected at the first moment. The leakage current at the first moment is denoted as Di1, and the operating voltage at that moment is denoted as Du1. At the same time, multiple environmental parameters are collected, namely temperature Dt1 and humidity Ds1. Then, at the second moment, its leakage current Di2 and operating voltage Du2 are collected, and the temperature Dt2 and humidity Ds2 at that moment are also collected.

[0071] In this embodiment, a high-precision active zero-flux through-core sensor is used to collect the leakage current of the surge arrester; at the same time, a GPS / BeiDou timing module is used as the synchronization clock for synchronous data acquisition.

[0072] S2. Calculate the resistive current harmonic content and operating voltage harmonic content for each surge arrester.

[0073] Specifically, the resistive current harmonic content Xz1 and Xz2 of each surge arrester between two points in time are calculated based on its leakage current, and the operating voltage harmonic content Xu1 and Xu2 of each surge arrester between two points in time are also calculated based on its operating voltage. In this embodiment, the harmonic content includes the 1st, 3rd, 5th, 7th, and 9th harmonics. The specific values ​​of the harmonic content are effective values ​​or peak values.

[0074] S3. Calculate the rate of change of resistive current harmonic content, the rate of change of operating voltage harmonic content, and the rate of change of multiple environmental parameters.

[0075] Specifically, the rate of change Xz of the resistive current harmonic content is calculated based on the resistive current harmonic content at two time points. The calculation formula is as follows:

[0076] Xz = (Xz2 - Xz1) / Xz1.

[0077] The rate of change of operating voltage harmonic content Xu is calculated based on the operating voltage harmonic content at two time points. The calculation formula is as follows:

[0078] Xu = (Xu2 - Xu1) / Xu1.

[0079] The rate of temperature change Xt is calculated based on the temperatures at two time points, using the following formula:

[0080] Xt=(Dt2-Dt1) / Dt1.

[0081] The humidity change rate Xs is calculated based on the humidity at two time points. The calculation formula is as follows:

[0082] Xs = (Ds2 - Ds1) / Ds1.

[0083] S4. Calculate the performance index of a specific surge arrester based on a preset calculation formula.

[0084] The performance index in this embodiment is denoted as Kz. The preset calculation formula is:

[0085]

[0086] Where Xa is the average value of the resistive current harmonic content change rate of all other surge arresters under the same phase on the same busbar, excluding specific surge arresters; Xc is the upper limit of the resistive current harmonic content change rate; Xx is the lower limit of the resistive current harmonic content change rate; and Xb is the set value of the operating voltage harmonic content change rate.

[0087] K1 is the proportion coefficient of the rate of change of resistive current harmonic content.

[0088] K2 is the proportion coefficient of the change rate of harmonic content of other resistive currents of the same type.

[0089] K3 is the proportion coefficient of the rate of change of operating voltage harmonic content.

[0090] K4 is the weighting coefficient of the rate of temperature change.

[0091] K5 is the proportion coefficient of the humidity change rate.

[0092] K6 is the proportion coefficient of the component parameters of a specific surge arrester. This coefficient can be adjusted according to the proportion of performance degradation of surge arresters from the same manufacturer, model, batch, and busbar.

[0093] S5. Output alarm information based on the performance index and alarm setting value.

[0094] That is, after obtaining the performance index Kz according to the above formula, the performance index is compared with the set alarm setting value Kg, and an alarm message is output based on the comparison result. For example:

[0095] Assuming the harmonic content is selected as the first harmonic and the peak value is chosen, and the parameters are: Xc = 0.5, Xx = 0.05, Xb = 0.05, K1 = 1, K2 = 0.2, K3 = 0.3, K4 = 0.1, K5 = 0.15, K6 = 0, Kg = 0.5, the alarm messages are as follows:

[0096] A surge arrester's performance deteriorated, triggering an alarm output:

[0097] Xz=0.51, Xa=0.05, Xu=0.01, Xt=0.01, Xs=0.01, Kz=0.75225>0.5;

[0098] Voltage fluctuations cause changes in resistive current, but no alarm is triggered.

[0099] Xz=0.51, Xa=0.05, Xu=0.06, Xt=0.01, Xs=0.01, Kz=0.44625<0.5;

[0100] Temperature changes cause changes in resistive current, but no alarm is triggered.

[0101] Xz=0.51, Xa=0.05, Xu=0.01, Xt=2.5, Xs=0.01, Kz=0.49827<0.5;

[0102] Changes in humidity cause changes in resistive current, but no alarm is triggered.

[0103] Xz=0.51, Xa=0.05, Xu=0.01, Xt=0.01, Xs=2, Kz=0.44778<0.5;

[0104] Other surge arresters show synchronous resistive current changes without triggering an alarm.

[0105] Xz=0.51, Xa=0.2, Xu=0.01, Xt=0.01, Xs=0.01, Kz=0.14025<0.5.

[0106] As can be seen from the above technical solution, this embodiment provides a method for monitoring the performance of surge arresters. Specifically, it involves collecting leakage current, operating voltage, and multiple environmental parameters of each surge arrester at two time points from multiple surge arresters on the same busbar and the same phase; calculating the resistive current harmonic content and operating voltage harmonic content of a specific surge arrester; then calculating the rate of change of resistive current harmonic content, the rate of change of operating voltage harmonic content, and the rate of change of multiple environmental parameters; calculating the rate of change of resistive current harmonic content, the rate of change of operating voltage harmonic content, and the rate of change of multiple environmental parameters based on a preset calculation formula to obtain the performance index of the specific surge arrester; comparing the performance index with the alarm setting value, and outputting the alarm information of the specific surge arrester based on the comparison result. This solution does not require monitoring the full current of the surge arrester to achieve its performance, thereby enabling timely response measures based on the monitored performance to avoid power outages.

[0107] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0108] Although the operations are described in a specific order, this should not be construed as requiring these operations to be performed in the specific order shown or in a sequential order. In certain environments, multitasking and parallel processing may be advantageous.

[0109] It should be understood that the steps described in the method embodiments of this disclosure may be performed in different orders and / or in parallel. Furthermore, the method embodiments may include additional steps and / or omit the steps shown. The scope of this disclosure is not limited in this respect.

[0110] Computer program code for performing the operations of this disclosure can be written in one or more programming languages ​​or a combination thereof, including but not limited to object-oriented programming languages ​​such as Java, Smalltalk, and C++, as well as conventional procedural programming languages ​​such as C or similar languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or can be connected to an external computer.

[0111] Example 2

[0112] Figure 2 This is a block diagram of a surge arrester performance monitoring device according to an embodiment of this application.

[0113] like Figure 2As shown, the performance monitoring device in this embodiment is used to monitor the performance of multiple surge arresters under the same phase on the same busbar. The performance monitoring device includes a parameter acquisition module 10, a first calculation module 20, a second calculation module 30, a third calculation module 40, and an information output module 50.

[0114] The data acquisition module is used to collect the leakage current, operating voltage, and multiple environmental parameters of each surge arrester in the same phase on the same bus at two time points.

[0115] Specifically, for each surge arrester on the same busbar and in the same phase, its leakage current and operating voltage are collected at the first moment. The leakage current at the first moment is denoted as Di1, and the operating voltage at that moment is denoted as Du1. At the same time, multiple environmental parameters are collected, namely temperature Dt1 and humidity Ds1. Then, at the second moment, its leakage current Di2 and operating voltage Du2 are collected, and the temperature Dt2 and humidity Ds2 at that moment are also collected.

[0116] In this embodiment, a high-precision active zero-flux through-core sensor is used to collect the leakage current of the surge arrester. The acquisition module is used to obtain the corresponding leakage current from the sensor. At the same time, the sensor uses a GPS / BeiDou timing module as the synchronization clock for synchronous data acquisition.

[0117] The first calculation module is used to calculate the resistive current harmonic content and operating voltage harmonic content of each surge arrester.

[0118] Specifically, the resistive current harmonic content Xz1 and Xz2 of each surge arrester between two points in time are calculated based on its leakage current, and the operating voltage harmonic content Xu1 and Xu2 of each surge arrester between two points in time are also calculated based on its operating voltage. In this embodiment, the harmonic content includes the 1st, 3rd, 5th, 7th, and 9th harmonics. The specific values ​​of the harmonic content are effective values ​​or peak values.

[0119] The second calculation module is used to calculate the rate of change of resistive current harmonic content, the rate of change of operating voltage harmonic content, and the rate of change of multiple environmental parameters.

[0120] Specifically, the rate of change Xz of the resistive current harmonic content is calculated based on the resistive current harmonic content at two time points. The calculation formula is as follows:

[0121] Xz = (Xz2 - Xz1) / Xz1.

[0122] The rate of change of operating voltage harmonic content Xu is calculated based on the operating voltage harmonic content at two time points. The calculation formula is as follows:

[0123] Xu = (Xu2 - Xu1) / Xu1.

[0124] The rate of temperature change Xt is calculated based on the temperatures at two time points, using the following formula:

[0125] Xt=(Dt2-Dt1) / Dt1.

[0126] The humidity change rate Xs is calculated based on the humidity at two time points. The calculation formula is as follows:

[0127] Xs = (Ds2 - Ds1) / Ds1.

[0128] The third calculation module is used to calculate the performance index of a specific surge arrester based on a preset calculation formula.

[0129] The performance index in this embodiment is denoted as Kz. The preset calculation formula is:

[0130]

[0131] Where Xa is the average value of the resistive current harmonic content change rate of all other surge arresters under the same phase on the same busbar, excluding specific surge arresters; Xc is the upper limit of the resistive current harmonic content change rate; Xx is the lower limit of the resistive current harmonic content change rate; and Xb is the set value of the operating voltage harmonic content change rate.

[0132] K1 is the proportion coefficient of the rate of change of resistive current harmonic content.

[0133] K2 is the proportion coefficient of the change rate of harmonic content of other resistive currents of the same type.

[0134] K3 is the proportion coefficient of the rate of change of operating voltage harmonic content.

[0135] K4 is the weighting coefficient of the rate of temperature change.

[0136] K5 is the proportion coefficient of the humidity change rate.

[0137] K6 is the proportion coefficient of the component parameters of a specific surge arrester. This coefficient can be adjusted according to the proportion of performance degradation of surge arresters from the same manufacturer, model, batch, and busbar.

[0138] The information output module is used to output alarm information based on the performance index and alarm settings.

[0139] That is, after obtaining the performance index Kz according to the above formula, the performance index is compared with the set alarm setting value Kg, and an alarm message is output based on the comparison result. For example:

[0140] Assuming the harmonic content is selected as the first harmonic and the peak value is chosen, and the parameters are: Xc = 0.5, Xx = 0.05, Xb = 0.05, K1 = 1, K2 = 0.2, K3 = 0.3, K4 = 0.1, K5 = 0.15, K6 = 0, Kg = 0.5, the alarm messages are as follows:

[0141] A surge arrester's performance deteriorated, triggering an alarm output:

[0142] Xz=0.51, Xa=0.05, Xu=0.01, Xt=0.01, Xs=0.01, Kz=0.75225>0.5;

[0143] Voltage fluctuations cause changes in resistive current, but no alarm is triggered.

[0144] Xz=0.51, Xa=0.05, Xu=0.06, Xt=0.01, Xs=0.01, Kz=0.44625<0.5;

[0145] Temperature changes cause changes in resistive current, but no alarm is triggered.

[0146] Xz=0.51, Xa=0.05, Xu=0.01, Xt=2.5, Xs=0.01, Kz=0.49827<0.5;

[0147] Changes in humidity cause changes in resistive current, but no alarm is triggered.

[0148] Xz=0.51, Xa=0.05, Xu=0.01, Xt=0.01, Xs=2, Kz=0.44778<0.5;

[0149] Other surge arresters show synchronous resistive current changes without triggering an alarm.

[0150] Xz=0.51, Xa=0.2, Xu=0.01, Xt=0.01, Xs=0.01, Kz=0.14025<0.5.

[0151] As can be seen from the above technical solution, this embodiment provides a surge arrester performance monitoring device, specifically used to collect leakage current, operating voltage, and multiple environmental parameters of each surge arrester under the same phase on the same busbar at two time points; calculate the resistive current harmonic content and operating voltage harmonic content of a specific surge arrester; then calculate the rate of change of resistive current harmonic content, the rate of change of operating voltage harmonic content, and the rate of change of multiple environmental parameters; calculate the rate of change of resistive current harmonic content, the rate of change of operating voltage harmonic content, and the rate of change of multiple environmental parameters based on a preset calculation formula to obtain the performance index of the specific surge arrester; compare the performance index with the alarm setting value, and output the alarm information of the specific surge arrester based on the comparison result. This solution does not require monitoring the full current of the surge arrester to achieve its performance, thereby enabling timely response measures based on the monitored performance to avoid power outage accidents.

[0152] The units described in the embodiments of this disclosure can be implemented in software or in hardware. The name of a unit does not necessarily limit the unit itself; for example, the first acquisition unit can also be described as "a unit that acquires at least two Internet Protocol addresses".

[0153] The functions described above in this document can be performed, at least in part, by one or more hardware logic components. For example, exemplary types of hardware logic components that can be used, without limitation, include: Field Programmable Gate Arrays (FPGAs), Application-Specific Integrated Circuits (ASICs), Application Standard Products (ASSPs), System-on-Chip (SoCs), Complex Programmable Logic Devices (CPLDs), and so on.

[0154] Example 3

[0155] Figure 3 This is a block diagram of an electronic device according to an embodiment of this application.

[0156] refer to Figure 3 The diagram illustrates a structural schematic suitable for implementing the electronic device in the embodiments of this disclosure. The terminal device in the embodiments of this disclosure may include, but is not limited to, mobile terminals such as mobile phones, laptops, digital broadcast receivers, PDAs (personal digital assistants), PADs (tablet computers), PMPs (portable multimedia players), in-vehicle terminals (e.g., in-vehicle navigation terminals), and fixed terminals such as digital TVs and desktop computers. Figure 3 The electronic device shown is merely an example and should not be construed as limiting the functionality and scope of the embodiments disclosed herein.

[0157] like Figure 3As shown, the electronic device may include a processing unit (e.g., a central processing unit, a graphics processing unit, etc.) 601, which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 602 or a program loaded from a storage device 608 into a random access memory (RAM) 603. The RAM 603 also stores various programs and data required for the operation of the electronic device. The processing unit 601, ROM 602, and RAM 603 are interconnected via a bus 604. An input / output (I / O) interface 605 is also connected to the bus 604.

[0158] Typically, the following devices can be connected to I / O interface 605: input devices 606 including, for example, touchscreens, touchpads, keyboards, mice, cameras, microphones, accelerometers, gyroscopes, etc.; output devices 607 including, for example, liquid crystal displays (LCDs), speakers, vibrators, etc.; storage devices 608 including, for example, magnetic tapes, hard disks, etc.; and communication devices 609. Communication device 609 allows electronic devices to communicate wirelessly or wiredly with other devices to exchange data. Although Figure 3 Electronic devices with various devices are shown, but it should be understood that it is not required to implement or have all of the devices shown. More or fewer devices may be implemented or have alternatively.

[0159] Example 4

[0160] This embodiment provides a computer-readable storage medium.

[0161] The aforementioned computer-readable storage medium carries one or more computer programs. When these programs are executed by the electronic device of the previous embodiment, the electronic device collects the leakage current, operating voltage, and multiple environmental parameters of each surge arrester under the same phase on the same bus at two time points; calculates the resistive current harmonic content and operating voltage harmonic content of a specific surge arrester; further calculates the rate of change of resistive current harmonic content, the rate of change of operating voltage harmonic content, and the rate of change of multiple environmental parameters; calculates the rate of change of resistive current harmonic content, the rate of change of operating voltage harmonic content, and the rate of change of multiple environmental parameters based on a preset calculation formula to obtain the performance index of the specific surge arrester; compares the performance index with the alarm setting value, and outputs the alarm information of the specific surge arrester based on the comparison result. This solution does not require monitoring the full current of the surge arrester to achieve its performance, thereby enabling timely response measures based on the monitored performance to avoid power outages.

[0162] It should be noted that the computer-readable medium described in this disclosure can be a computer-readable signal medium or a computer-readable storage medium, or any combination thereof. A computer-readable storage medium can be, for example,—but not limited to—an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of a computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof. In this disclosure, a computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in connection with an instruction execution system, apparatus, or device. In this disclosure, a computer-readable signal medium can include a data signal propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such propagated data signals can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A computer-readable signal medium can be any computer-readable medium other than a computer-readable storage medium, which can send, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device. The program code contained on the computer-readable medium can be transmitted using any suitable medium, including but not limited to: wires, optical fibers, RF (radio frequency), etc., or any suitable combination thereof.

[0163] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0164] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of the present invention.

[0165] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0166] The technical solution provided by the present invention has been described in detail above. Specific examples have been used to illustrate the principle and implementation of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A method for monitoring the performance of a surge arrester, applied to electronic equipment, characterized in that, The performance monitoring method includes the following steps: The leakage current and operating voltage of each surge arrester under the same phase on the same busbar are collected at two time points, as well as multiple environmental parameters of each surge arrester at the two time points; Calculate the resistive current harmonic content of the specific surge arrester based on the leakage current of the specific surge arrester, and calculate the operating voltage harmonic content of the specific surge arrester based on the operating voltage of the specific surge arrester; The rate of change of resistive current harmonic content is calculated based on the resistive current harmonic content; the rate of change of operating voltage harmonic content is calculated based on the operating voltage harmonic content; and the rate of change of multiple environmental parameters is calculated based on the multiple environmental parameters. The performance index of the specific surge arrester is obtained by calculating the rate of change of the resistive current harmonic content, the rate of change of the operating voltage harmonic content, and the rate of change of multiple environmental parameters based on the preset calculation formula. The alarm information for the specific surge arrester is output based on the comparison between the performance index and the alarm setting value. The preset calculation formula is: Kz is the performance index; Xa is the average value of the rate of change of resistive current harmonic content of the other surge arresters besides the specific surge arrester; Xz is the rate of change of resistive current harmonic content of the specific surge arrester; Xc is the upper limit of the rate of change of resistive current harmonic content; Xx is the lower limit of the rate of change of resistive current harmonic content; Xb is a set value for the rate of change of harmonic content in the operating voltage; Xu represents the rate of change of the harmonic content of the operating voltage; Xt represents the temperature change rate among the multiple environmental parameter change rates; Xs is the humidity change rate among the multiple environmental parameter change rates; K1 is the proportion coefficient of the rate of change of resistive current harmonic content of the specific surge arrester; K2 is the proportion coefficient of the rate of change of resistive current harmonic content of other surge arresters besides the specific surge arrester; K3 is the proportion coefficient of the rate of change of the harmonic content of the operating voltage; K4 is the proportion coefficient of the temperature change rate; K5 is the proportion coefficient of the humidity change rate; K6 is the proportion coefficient of the component parameters of the specific surge arrester.

2. The performance monitoring method as described in claim 1, characterized in that, The harmonic content includes the 1st harmonic, 3rd harmonic, 5th harmonic, 7th harmonic and 9th harmonic.

3. The performance monitoring method as described in claim 1, characterized in that, The environmental parameters include temperature and / or humidity.

4. A performance monitoring device for surge arresters, applied to electronic equipment, characterized in that, The performance monitoring device includes: The parameter acquisition module is configured to acquire the leakage current and operating voltage of each of the multiple surge arresters under the same phase on the same bus at two time points, as well as multiple environmental parameters of each surge arrester at the two time points. The first calculation module is configured to calculate the resistive current harmonic content of the specific surge arrester based on the leakage current of the specific surge arrester, and to calculate the operating voltage harmonic content of the specific surge arrester based on the operating voltage of the specific surge arrester; The second calculation module is configured to calculate the rate of change of resistive current harmonic content based on the resistive current harmonic content, calculate the rate of change of operating voltage harmonic content based on the operating voltage harmonic content, and calculate the rate of change of multiple environmental parameters based on the multiple environmental parameters. The third calculation module is configured to calculate the rate of change of the resistive current harmonic content, the rate of change of the operating voltage harmonic content, and the rate of change of the multiple environmental parameters based on a preset calculation formula, so as to obtain the performance index of the specific surge arrester. The information output module is configured to compare and calculate the performance index with the alarm setting value, and output the alarm information of the specific surge arrester based on the comparison result; The preset calculation formula is: Kz is the performance index; Xa is the average value of the rate of change of resistive current harmonic content of the other surge arresters besides the specific surge arrester; Xz is the rate of change of resistive current harmonic content of the specific surge arrester; Xc is the upper limit of the rate of change of resistive current harmonic content; Xx is the lower limit of the rate of change of resistive current harmonic content; Xb is a set value for the rate of change of harmonic content in the operating voltage; Xu represents the rate of change of the harmonic content of the operating voltage; Xt represents the temperature change rate among the multiple environmental parameter change rates; Xs is the humidity change rate among the multiple environmental parameter change rates; K1 is the proportion coefficient of the rate of change of resistive current harmonic content of the specific surge arrester; K2 is the proportion coefficient of the rate of change of resistive current harmonic content of other surge arresters besides the specific surge arrester; K3 is the proportion coefficient of the rate of change of the harmonic content of the operating voltage; K4 is the proportion coefficient of the temperature change rate; K5 is the proportion coefficient of the humidity change rate; K6 is the proportion coefficient of the component parameters of the specific surge arrester.

5. The performance monitoring device as described in claim 4, characterized in that, The harmonic content includes the 1st harmonic, 3rd harmonic, 5th harmonic, 7th harmonic and 9th harmonic.

6. The performance monitoring device as described in claim 4, characterized in that, The environmental parameters include temperature and / or humidity.

7. An electronic device, characterized in that, It includes at least one processor and a memory connected to the processor, wherein: The memory is used to store computer programs or instructions; The processor is used to execute the computer program or instructions to enable the electronic device to implement the surge arrester performance monitoring method as described in any one of claims 1 to 3.

8. A storage medium used in electronic devices, characterized in that, The storage medium carries one or more computer programs that can be executed by the electronic device to enable the electronic device to implement the surge arrester performance monitoring method as described in any one of claims 1 to 3.

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