Method and device for determining lightning protection equipment of multiple lightning areas and storage medium

Abstract

The invention discloses a method and device for determining lightning protection equipment of multiple lightning areas and a storage medium, and belongs to the technical field of electric power lightning protection. The method comprises the steps that historical lightning protection data of various lightning protection devices in a multi-lightning area are acquired, and the historical lightning protection data comprise historical lightning current values of the various lightning protection devices and the probability of each lightning return stroke frequency; according to the historical lightning current value and a plurality of predetermined reference lightning current values of a plurality of lightning protection devices, determining the damage rate of each lightning protection device under each lightning return stroke frequency; according to the probability of each lightning return stroke frequency and the damage rate of each lightning protection device under each lightning return stroke frequency, the multiple lightning stroke damage rate of each lightning protection device is determined; and screening the multiple lightning protection devices according to the multi-lightning stroke damage rate to determine target lightning protection devices in the multi-lightning area. According to the invention, the lightning protection equipment in the multi-lightning area can be determined.

Description

Technical Field

[0001] The present application relates to the technical field of lightning protection for electricity, and particularly relates to a method, device, and storage medium for determining a lightning protection device for a multi - lightning area. Background Art

[0002] Lightning strike refers to a natural phenomenon in which current during a thunderstorm causes harm to people, trees, buildings, etc. To avoid the harm of lightning strikes to all things in nature, traditional lightning protection devices are placed at high positions, so that they are higher than the protected objects in terms of spatial position, and a space with a concentrated local electric field intensity is formed at the top. In this way, lightning can be attracted to strike the lightning protection device, so that the protected object can avoid being struck by lightning.

[0003] Lightning strikes in nature can be divided into two situations: single - lightning and multi - lightning. Traditional lightning protection devices are configured only according to the characteristics of single - lightning, and can withstand the energy carried by single - lightning strikes. In the prior art, traditional lightning protection devices for single - lightning are set in multi - lightning areas. When multiple lightning strikes the lightning protection device, the lightning protection device will bear huge energy that it cannot withstand, increasing the failure probability of the lightning protection device and reducing the safety of multi - lightning areas. And the prior art does not have relevant methods for determining a lightning protection device corresponding to a multi - lightning area under multi - lightning strikes. Therefore, how to determine the lightning protection device for a multi - lightning area has become an urgent problem to be solved. Summary of the Invention

[0004] The purpose of the embodiments of the present application is to provide a method, device, equipment, and storage medium for determining a lightning protection device for a multi - lightning area, so as to solve the problem of how to determine the lightning protection device for a multi - lightning area in the prior art.

[0005] To achieve the above purpose, the first aspect of the present application provides a method for determining a lightning protection device for a multi - lightning area, and the method includes:

[0006] Obtain the historical lightning protection data of various lightning protection devices in a multi - lightning area, where the historical lightning protection data includes the historical lightning current values of various lightning protection devices and the probabilities of each lightning return stroke count;

[0007] According to the historical lightning current values and a plurality of reference lightning current values of various pre - determined lightning protection devices, determine the damage rate of each lightning protection device under each lightning return stroke count, where the plurality of reference lightning current values include the lightning current values of each preset number of damaged lightning protection devices corresponding to each lightning return stroke count;

[0008] According to the probabilities of each lightning return stroke count and the damage rates of each lightning protection device under each lightning return stroke count, determine the multi - lightning strike damage rate of each lightning protection device;

[0009] Screen multiple lightning protection devices according to the multiple lightning strike damage rate to determine the target lightning protection device in the multiple lightning area.

[0010] In the embodiment of the present application, the reference lightning current values include a first reference lightning current value and a second reference lightning current value. The determination of the multiple reference lightning current values of multiple lightning protection devices includes: determining multiple first reference lightning current values of multiple lightning protection devices based on a pre-constructed lightning strike tower simulation model; determining multiple second reference lightning current values of multiple lightning protection devices based on a pre-constructed lightning strike line simulation model.

[0011] In the embodiment of the present application, according to the historical lightning current value and the multiple reference lightning current values of multiple pre-determined lightning protection devices, determining the damage rate of each lightning protection device under each lightning return stroke number includes: determining the first damage rate of each lightning protection device under each lightning return stroke number according to the historical lightning current value and the multiple first reference lightning current values of multiple pre-determined lightning protection devices; determining the second damage rate of each lightning protection device under each lightning return stroke number according to the historical lightning current value and the multiple second reference lightning current values of multiple pre-determined lightning protection devices; determining the sum value of the first damage rate and the second damage rate to obtain the damage rate of each lightning protection device under each lightning return stroke number.

[0012] In the embodiment of the present application, the historical lightning protection data further includes the lightning strike position probability, the total number of lightning strikes, and the arc building rate. The lightning strike position probability includes the lightning strike tower probability. Determining the first damage rate of each lightning protection device under each lightning return stroke number according to the historical lightning current value and the multiple first reference lightning current values of multiple pre-determined lightning protection devices includes: determining the product of the first current probability value and the corresponding first preset quantity to obtain the first damage reference probability value of each lightning protection device under each lightning return stroke number, where the first current probability value is the amplitude probability of the historical lightning current value, and the multiple first preset quantities are the preset quantities of the lightning protection devices corresponding to the range of the first reference lightning current value where the historical lightning current value is located that are damaged; determining the product value of the lightning strike tower probability, the total number of lightning strikes, the arc building rate, and the first damage reference probability value to obtain the first total damage rate of each lightning protection device under each lightning return stroke number; determining the quotient value of the first total damage rate of each lightning protection device under each lightning return stroke number and the total number of devices of multiple lightning protection devices to obtain the first damage rate of each lightning protection device under each lightning return stroke number.

[0013] In the embodiments of the present application, the historical lightning protection data further includes the lightning strike position probability, the total number of lightning strikes, and the arc building rate. The lightning strike position probability includes the lightning strike line probability. According to the historical lightning current value and the multiple second reference lightning current values of a variety of lightning protection devices determined in advance, the second damage rate of various lightning protection devices under each lightning return stroke number is determined, including: determining the product of the second current probability value and the corresponding second preset quantity to obtain the second damage reference probability value of various lightning protection devices under each lightning return stroke number, where the second current probability value is the amplitude probability of the historical lightning current value, and the multiple second preset quantities are the preset quantities of the lightning protection devices damaged corresponding to the range of the second reference lightning current value where the historical lightning current value is located; determining the product value of the lightning strike line probability, the total number of lightning strikes, the arc building rate, and the second damage reference probability value to obtain the second total damage rate of various lightning protection devices under each lightning return stroke number; determining the quotient value of the second total damage rate of various lightning protection devices under each lightning return stroke number and the total number of the various lightning protection devices to obtain the second damage rate of various lightning protection devices under each lightning return stroke number.

[0014] In the embodiments of the present application, according to the probability of each lightning return stroke number and the damage rate of various lightning protection devices under each lightning return stroke number, the multiple lightning strike damage rate of various lightning protection devices is determined, including: determining the sum value of the product of the probability of each lightning return stroke number and the damage rate of various lightning protection devices under each lightning return stroke number to obtain the multiple lightning strike damage rate of various lightning protection devices.

[0015] In the embodiments of the present application, various lightning protection devices are screened according to the multiple lightning strike damage rate to determine the target lightning protection devices in the multiple lightning strike area, including: determining the lightning protection device with the multiple lightning strike damage rate less than the preset multiple lightning strike damage rate corresponding to the multiple lightning strike area and the minimum maximum allowable current of the lightning protection device to obtain the target lightning protection device in the multiple lightning strike area.

[0016] A second aspect of the present application provides a device for determining lightning protection devices in a multiple lightning strike area, including: a memory configured to store instructions; and a processor configured to call instructions from the memory and capable of implementing the method for determining lightning protection devices in a multiple lightning strike area according to the above.

[0017] A third aspect of the present application provides a device for determining lightning protection devices in a multiple lightning strike area, including: the device for determining lightning protection devices in a multiple lightning strike area according to the above.

[0018] A fourth aspect of the present application provides a machine-readable storage medium, on which instructions are stored, and the instructions are used to cause a machine to execute the method for determining lightning protection devices in a multiple lightning strike area according to the above.

[0019] For the above technical solution, historical lightning protection data of various lightning protection devices in a multi-lightning area is obtained, and historical lightning current values of various lightning protection devices and probabilities of each lightning strike return count in the historical lightning protection data are determined. Then, based on the historical lightning current values and multiple reference lightning current values of various pre-determined lightning protection devices, damage rates of various lightning protection devices under each lightning strike return count are determined. Furthermore, based on the probabilities of each lightning strike return count and the damage rates of various lightning protection devices under each lightning strike return count, multiple lightning strike damage rates of various lightning protection devices are determined. Thus, various lightning protection devices can be screened according to the multiple lightning strike damage rates, so as to determine the target lightning protection devices in the multi-lightning area, and the target lightning protection devices corresponding to the multi-lightning area under multiple lightning strikes can be determined, thereby reducing the failure probability of the target lightning protection devices and increasing the safety of the multi-lightning area.

[0020] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent specific implementation part. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings are used to provide a further understanding of the embodiments of the present application, and constitute a part of the specification. Together with the following specific implementation, they are used to explain the embodiments of the present application, but do not constitute a limitation to the embodiments of the present application. In the drawings:

[0022] Figure 1 Schematically shows a flowchart of a method for determining a lightning protection device in a multi-lightning area according to an embodiment of the present application;

[0023] Figure 2 Schematically shows a diagram of the multi-lightning ratio in the multi-lightning area of Hunan Province. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It should be understood that the specific implementation described here is only used to explain and illustrate the embodiments of the present application, and does not limit the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0025] It should be noted that the acquisition, transmission, storage, use, processing, etc. of data in the technical solution of the present application all comply with the relevant regulations of national laws and regulations. In the embodiments of the present application, some industry-existing solutions such as certain software, components, models, etc. may be mentioned. They should be regarded as exemplary, and their purpose is only to illustrate the feasibility in the implementation of the technical solution of the present application, but it does not mean that the applicant has already or necessarily used this solution.

[0026] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of this application, then such directional indications are only used to explain the relative positional relationship, movement conditions, etc. between components in a specific posture (as shown in the attached drawings). If this specific posture changes, then the directional indications will also change accordingly.

[0027] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of this application, then such descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0028] Figure 1 A schematic flow diagram of a method for a lightning protection device for determining a multiple lightning strike area according to an embodiment of the present application is schematically shown. As Figure 1 shown, an embodiment of the present application provides a method for a lightning protection device for determining a multiple lightning strike area. Taking the application of this method to a processor as an example for illustration, this method may include the following steps:

[0029] Step S101, obtain the historical lightning protection data of various lightning protection devices in a multiple lightning strike area, where the historical lightning protection data includes the historical lightning current values of various lightning protection devices and the probabilities of each lightning return stroke times.

[0030] Step S102, according to the historical lightning current values and multiple reference lightning current values of multiple pre-determined lightning protection devices, determine the damage rates of various lightning protection devices under each lightning return stroke times, where the multiple reference lightning current values include the lightning current values of each preset number of damaged lightning protection devices corresponding to each lightning return stroke times.

[0031] Step S103, according to the probabilities of each lightning return stroke times and the damage rates of various lightning protection devices under each lightning return stroke times, determine the multiple lightning strike damage rates of various lightning protection devices.

[0032] Step S104, screen various lightning protection devices according to the multiple lightning strike damage rates to determine the target lightning protection devices in the multiple lightning strike area.

[0033] It can be understood that the multiple lightning area is the area where multiple lightning strikes occur. The multiple lightning protection devices are multiple types of lightning protection devices. Each lightning return stroke count is the multiplicity of each multiple lightning, and the probability of each lightning return stroke count is the proportion of the number of each lightning return stroke count in the historical lightning protection data to the number of multiple lightning return stroke counts. The historical lightning protection data is the historical data used for lightning protection, and the historical lightning protection data may include, but is not limited to, the historical lightning current values of multiple lightning protection devices and the probability of each lightning return stroke count. The multiple reference lightning current values of the pre-determined multiple lightning protection devices are the multiple reference lightning current values of the pre-determined multiple lightning protection devices. The reference lightning current value may include the lightning current values of the pre-set number of damaged lightning protection devices corresponding to each lightning return stroke count. The pre-set number is the pre-set number. The multiple lightning strike damage rate is the multiple lightning strike damage rate of various lightning protection devices.

[0034] Specifically, the processor can obtain the pre-stored historical lightning protection data from a pre-constructed lightning protection database or through other data acquisition methods, and determine the historical lightning current values and the probability of each lightning return stroke count in the historical lightning protection data. Since each lightning protection device corresponds to multiple reference current values under each lightning return stroke count, therefore, according to the historical lightning current values and the multiple reference lightning current values of the pre-determined multiple lightning protection devices, determine the damage rate of various lightning protection devices under each lightning return stroke count, and then according to the probability of each lightning return stroke count and the damage rate of various lightning protection devices under each lightning return stroke count, determine the multiple lightning strike damage rate of various lightning protection devices. Based on this multiple lightning strike damage rate, determine the target lightning protection device for the multiple lightning area from multiple lightning protection devices.

[0035] Obtain the historical lightning protection data of multiple lightning protection devices in the multiple lightning area, and determine the historical lightning current values of the multiple lightning protection devices and the probability of each return stroke count in the historical lightning protection data, and according to the historical lightning current values and the multiple reference lightning current values of the pre-determined multiple lightning protection devices, determine the damage rate of various lightning protection devices under each lightning return stroke count. Furthermore, according to the probability of each lightning return stroke count and the damage rate of various lightning protection devices under each lightning return stroke count, determine the multiple lightning strike damage rate of various lightning protection devices. Thus, various lightning protection devices can be screened according to the multiple lightning strike damage rate, so as to determine the target lightning protection device for the multiple lightning area. For the multiple lightning area under multiple lightning strikes, the corresponding target lightning protection device for the multiple lightning area can be determined, the failure probability of the target lightning protection device can be reduced, and the safety of the multiple lightning area can be increased.

[0036] In one embodiment, the reference lightning current value includes a first reference lightning current value and a second reference lightning current value. The determination of the multiple reference lightning current values of multiple lightning protection devices may include: based on a pre-constructed lightning strike tower simulation model, determine multiple first reference lightning current values of multiple lightning protection devices; based on a pre-constructed lightning strike line simulation model, determine multiple second reference lightning current values of multiple lightning protection devices.

[0037] It can be understood that the reference lightning current values may include a first reference lightning current value and a second reference lightning current value. The pre-built lightning-struck tower simulation model is a pre-built lightning-struck tower simulation model. A plurality of lightning protection devices of the same type are installed in the pre-built lightning-struck tower simulation model. Different lightning-struck tower simulation models are installed with different numbers of lightning protection devices of the same type. The pre-built lightning-struck line simulation model is a pre-built lightning-struck line simulation model. A plurality of lightning protection devices of the same type are installed in the pre-built lightning-struck line simulation model. Different lightning-struck line simulation models are installed with different numbers of lightning protection devices of the same type.

[0038] Specifically, the processor can determine, based on the pre-built lightning-struck tower simulation model, a plurality of lightning current values of a plurality of preset numbers of damaged lightning protection devices under each lightning return stroke number, that is, determine the lightning current value that causes a preset number of damaged lightning protection devices in the lightning-struck tower simulation model under each lightning return stroke number. This lightning current value can be used as a reference lightning current value in the first reference lightning current values. By determining multiple times the lightning current values that cause each preset number of damaged lightning protection devices in the lightning-struck tower simulation model, multiple first reference lightning current values can be obtained; similarly, the processor can also determine, based on the pre-built lightning-struck line simulation model, a plurality of lightning current values corresponding to a plurality of preset numbers of damaged lightning protection devices under each lightning return stroke number, that is, determine the lightning current value that causes a preset number of damaged lightning protection devices in the lightning-struck line simulation model under each lightning return stroke number. This lightning current value can be used as a reference lightning current value in the second reference lightning current values. By determining multiple times the lightning current values that cause each preset number of damaged lightning protection devices in the lightning-struck line simulation model, multiple second reference lightning current values can be obtained.

[0039] Considering the two situations of lightning-struck towers and lightning-struck lines, gradually increase the current values flowing through the lightning protection devices in the lightning-struck tower simulation model and the lightning-struck line simulation model, and respectively determine a plurality of lightning current values of a plurality of preset numbers of damaged lightning protection devices in the lightning-struck tower simulation model and the lightning-struck line simulation model under each lightning return stroke number, so as to accurately determine the first reference lightning current value and the second reference lightning current value corresponding to the lightning-struck tower simulation model and the lightning-struck line simulation model, and accurately determine the damage rate of each lightning protection device.

[0040] In one embodiment, determining the damage rate of various lightning protection devices under each lightning strike return stroke count based on historical lightning current values and multiple reference lightning current values of multiple pre-determined lightning protection devices may include: determining the first damage rate of various lightning protection devices under each lightning strike return stroke count according to the historical lightning current values and multiple first reference lightning current values of multiple pre-determined lightning protection devices; determining the second damage rate of various lightning protection devices under each lightning strike return stroke count according to the historical lightning current values and multiple second reference lightning current values of multiple pre-determined lightning protection devices; determining the sum value of the first damage rate and the second damage rate to obtain the damage rate of various lightning protection devices under each lightning strike return stroke count.

[0041] It can be understood that each lightning protection device corresponds to a first damage rate and a second damage rate under each return stroke count. The number of first damage rates can be multiple, and the number of second damage rates can be multiple.

[0042] Specifically, the processor can determine the first damage rate of various lightning protection devices under each lightning strike return stroke count based on multiple pre-determined first reference lightning current values in the lightning strike tower simulation model and in combination with the historical lightning current values. Similarly, the processor can also determine the second damage rate of various lightning protection devices under each lightning strike return stroke count based on multiple pre-determined second reference lightning current values in the lightning strike tower simulation model and in combination with the historical lightning current values. In this way, by determining the sum value of the first damage rate and the second damage rate, the damage rate of various lightning protection devices under each lightning strike return stroke count can be determined, comprehensively considering the situation of the lightning strike location, and comprehensively weighing the damage rates of various lightning protection devices at different lightning strike locations. Thus, the first damage rate and the second damage rate of various lightning protection devices at different lightning strike locations are combined to obtain the damage rate of various lightning protection devices under each lightning strike return stroke count, thereby accurately determining the damage rate of various lightning protection devices under each lightning strike return stroke count.

[0043] In one embodiment, the historical lightning protection data further includes the lightning strike location probability, the total number of lightning strikes, and the arc - building rate. The lightning strike location probability includes the lightning strike tower probability. According to the historical lightning current value and the multiple first reference lightning current values of multiple lightning protection devices determined in advance, determining the first damage rate of various lightning protection devices under each lightning return stroke count includes: determining the product of the first current probability value and the corresponding first preset quantity to obtain the first damage reference probability value of various lightning protection devices under each lightning return stroke count, where the first current probability value is the amplitude probability of the historical lightning current value, and the multiple first preset quantities are the preset quantities of the lightning protection devices damaged corresponding to the range of the first reference lightning current value where the historical lightning current value is located; determining the product value of the lightning strike tower probability, the total number of lightning strikes, the arc - building rate, and the first damage reference probability value to obtain the first total damage rate of various lightning protection devices under each lightning return stroke count; determining the quotient value of the first total damage rate of various lightning protection devices under each lightning return stroke count and the total number of the multiple lightning protection devices to obtain the first damage rate of various lightning protection devices under each lightning return stroke count.

[0044] It can be understood that the historical lightning protection data may include, but is not limited to, the lightning strike location probability, the total number of lightning strikes, and the arc - building rate. The lightning strike location probability is the probability of the lightning strike position; the total number of lightning strikes is the total number of different lightning strike positions; the arc - building rate is the probability that the impulse flashover in the historical lightning data turns into a stable power - frequency arc. The lightning strike location probability may include the lightning strike tower probability. The first current probability value is the amplitude probability of the historical lightning current value. The first preset quantity is the preset quantity of the lightning protection devices damaged corresponding to the range of the first reference lightning current value where the historical lightning current value is located. The first total damage rate is the total damage rate of the multiple lightning protection devices installed in the lightning strike tower simulation model.

[0045] Specifically, based on the pre - constructed correspondence between the reference current value and the preset quantity, the processor can determine the first preset quantity of the lightning protection devices corresponding to the first reference lightning current value damaged through the first reference lightning current value where the historical lightning current value is located, and determine the first current probability value of the historical lightning current value of the lightning protection devices, calculate the product value of the first current probability value and the first preset quantity, and obtain the first damage reference probability value of various lightning protection devices under each lightning return stroke count. Based on this, the product value of the lightning strike tower probability, the total number of lightning strikes, the arc - building rate, and the first damage reference probability value can be further calculated to obtain the first total damage rate of various lightning protection devices under each lightning return stroke count. Further, the quotient value of the first total damage rate of various lightning protection devices under each lightning return stroke count and the total number of the multiple lightning protection devices can be calculated to determine the first damage rate of various lightning protection devices under each lightning return stroke count.

[0046] In one embodiment, the historical lightning protection data further includes the lightning strike location probability, the total number of lightning strikes, and the arc building rate. The lightning strike location probability includes the lightning strike line probability. According to the historical lightning current value and the multiple second reference lightning current values of a variety of lightning protection devices determined in advance, determining the second damage rate of various lightning protection devices under each lightning return stroke count may include: determining the product of the second current probability value and the corresponding second preset quantity to obtain the second damage reference probability value of various lightning protection devices under each lightning return stroke count, where the second current probability value is the amplitude probability of the historical lightning current value, and the multiple second preset quantities are the preset quantities of the lightning protection devices damaged corresponding to the range of the second reference lightning current value where the historical lightning current value is located; determining the product value of the lightning strike line probability, the total number of lightning strikes, the arc building rate, and the second damage reference probability value to obtain the second total damage rate of various lightning protection devices under each lightning return stroke count; determining the quotient value of the second total damage rate of various lightning protection devices under each lightning return stroke count and the total number of devices of the variety of lightning protection devices to obtain the second damage rate of various lightning protection devices under each lightning return stroke count.

[0047] It can be understood that the lightning strike location probability may include the lightning strike line probability. The second current probability value is another amplitude probability of the historical lightning current value. The second preset quantity is the preset quantity of the lightning protection devices damaged corresponding to the range of the second reference lightning current value where the historical lightning current value is located. The second total damage rate is the total damage rate of the multiple lightning protection devices installed in the lightning strike line simulation model.

[0048] Specifically, based on the pre - constructed correspondence between the reference current value and the preset quantity, the processor can determine the second preset quantity of the lightning protection devices damaged corresponding to the second reference lightning current value through the second reference lightning current value where the historical lightning current value is located, and determine the second current probability value of the historical lightning current value of the lightning protection device, calculate the product value of the second current probability value and the first preset quantity, and the first damage reference probability value of various lightning protection devices under each lightning return stroke count can be obtained. Based on this, the product value of the lightning strike tower probability, the total number of lightning strikes, the arc building rate, and the first damage reference probability value can be further calculated, and the first total damage rate of various lightning protection devices under each lightning return stroke count can be obtained. Further, the quotient value of the first total damage rate of various lightning protection devices under each lightning return stroke count and the total number of devices of the variety of lightning protection devices can be calculated, so as to determine the first damage rate of various lightning protection devices under each lightning return stroke count.

[0049] In one embodiment, according to the probability of each lightning return stroke count and the damage rate of various lightning protection devices under each lightning return stroke count, determining the multiple - lightning - strike damage rate of various lightning protection devices may include: determining the sum value of the product of the probability of each lightning return stroke count and the damage rate of various lightning protection devices under each lightning return stroke count to obtain the multiple - lightning - strike damage rate of various lightning protection devices.

[0050] It can be understood that the multiple lightning strike damage rate is the damage rate of various lightning protection devices under multiple lightning strikes.

[0051] Specifically, by calculating the product value of the probability of each lightning strike return and the damage rate of various lightning protection devices under each lightning strike return, multiple products can be obtained. Then, by calculating the sum value of the product of the probability of each lightning strike return and the damage rate of various lightning protection devices under each lightning strike return, the multiple lightning strike damage rate of various lightning protection devices can be determined.

[0052] In one embodiment, screening various lightning protection devices according to the multiple lightning strike damage rate to determine the target lightning protection device in the multiple lightning area may include: determining the lightning protection device with the multiple lightning strike damage rate less than the preset multiple lightning strike damage rate corresponding to the multiple lightning area and the minimum maximum allowable current of the lightning protection device, so as to obtain the target lightning protection device in the multiple lightning area.

[0053] It can be understood that the preset multiple lightning strike damage rate is the preset multiple lightning strike damage rate, and each multiple lightning area corresponds to a preset multiple lightning strike damage rate. The maximum allowable current is the maximum allowable passing current of the lightning protection device. If the current passing through the lightning protection device exceeds the maximum allowable current of the lightning protection device, it can be determined that the lightning protection device fails / damages. The target lightning protection device is the lightning protection device with the multiple lightning strike damage rate less than the preset multiple lightning strike damage rate corresponding to the multiple lightning area and the minimum maximum allowable current of the lightning protection device, and the target lightning protection device is this multiple lightning.

[0054] Specifically, the processor can screen and determine the lightning protection device with the multiple lightning strike damage rate less than the preset multiple lightning strike damage rate corresponding to the multiple lightning area from various lightning protection devices. If the number of such lightning protection devices is multiple, then screen the lightning protection device with the minimum maximum allowable passing current from the multiple lightning protection devices as the target lightning protection device; if the number of such lightning protection devices is one, it can be directly determined that this lightning protection device is the target lightning protection device; if there is no lightning protection device with a multiple lightning strike damage rate less than the preset multiple lightning strike damage rate corresponding to the multiple lightning area, then multiple lightning protection devices with a larger maximum allowable current can be re-obtained or multiple tests can be carried out to re-determine the target lightning protection device in this multiple lightning area. Thus, the target lightning protection device applicable to this multiple lightning area can be determined, while ensuring the safety of the lightning protection area, minimizing the economic cost to the greatest extent, so as to reasonably plan economic resources.

[0055] Lightning strike refers to a natural phenomenon in which the current during a thunderstorm causes harm to people, trees, buildings, etc. To avoid the harm caused by lightning strikes to all things in nature, traditional lightning protection equipment is placed at a high place, so that it is higher than the protected object in terms of spatial position, and a space with a concentrated local electric field intensity is formed at the top. In this way, lightning can be attracted and strike the lightning protection equipment, so that the protected object can avoid lightning strikes.

[0056] Lightning strikes in nature can be divided into two situations: single lightning and multiple lightning. Traditional lightning protection equipment is configured only according to the characteristics of single lightning and can withstand the energy carried by a single lightning strike. In the prior art, the traditional lightning protection equipment for single lightning is set in a multiple lightning area. When multiple lightning strikes the lightning protection equipment, it will cause the lightning protection equipment to bear huge energy that it cannot withstand, increasing the failure probability of the lightning protection equipment and reducing the safety of the multiple lightning area. And the prior art does not have a relevant method for determining the lightning protection equipment corresponding to the multiple lightning area under multiple lightning strikes. Therefore, how to determine the lightning protection equipment for multiple lightning has become an urgent problem to be solved.

[0057] A specific embodiment of the present application provides a method, device and storage medium for determining lightning protection equipment for a multiple lightning area, which can determine the target lightning protection equipment corresponding to the multiple lightning area under multiple lightning strikes, thereby reducing the failure probability of the target lightning protection equipment and increasing the safety of the multiple lightning area.

[0058] The processor can divide the area with an accuracy of 0.1×0.1 longitude and latitude, process the lightning data of Hunan Province in 2022, and obtain the cloud-to-ground flash density and the proportion of multiple lightning in each small area. Based on this, the area can be divided into grades according to the cloud-to-ground flash density of each small area. Hunan Province can be divided into grade B1, B2, C1, C2 or D areas. For different grade areas, according to the proportion of multiple lightning, they are divided into areas where multiple lightning is not likely to occur (areas where the proportion of multiple lightning is less than 40%), areas where multiple lightning normally occurs (areas where the proportion of multiple lightning is 40%-55%), and areas where multiple lightning is likely to occur (areas where the proportion of multiple lightning exceeds 55%). From Figure 2 it can be seen that the areas in Hunan where multiple lightning is likely to occur (the proportion of multiple lightning exceeds 55%) from 2022 to 2023 are the southern part of Zhangjiajie, the northern part of Chenzhou, the north of Loudi, the middle of Huaihua, etc., accounting for 8% of the total area of Hunan. The higher the cloud-to-ground flash density in an area, the greater the probability of multiple lightning occurrences. In areas where the cloud-to-ground flash density reaches grade D, the proportion of multiple lightning is close to half.

[0059] Through the large-current test and the maximum allowable current (the current-carrying capacity of the whole device) of each lightning protection device, the limit absorption energy of each lightning protection device, the proportionality coefficient of the limit absorption energy of each lightning protection device, and the number of lightning protection parts (resistor chips) included in each lightning protection device can be determined. Thus, the relationship formula of the limit absorption energy of each lightning protection device can be determined, and the limit absorption energy of each lightning protection device under different numbers of lightning strikes can be determined.

[0060] As shown in Table 1 below, the relationship formula of the limit absorption energy of three lightning protection devices can be determined.

[0061] Table 1

[0062]

[0063] Note: Where k represents the multiplicity

[0064] Then, assuming that the lightning current waveform is uniformly taken as 2.6 / 50, and the multiple lightning amplitude ratio is taken as the average amplitude ratio obtained statistically. According to the regional characteristics of the historical lightning data, an electromagnetic transient simulation model (lightning strike on tower simulation model and lightning strike on line simulation model) is built to determine the first reference lightning current values (I 1 , I 2 and I 3 ) corresponding to the lightning strike on tower simulation model of the above three lightning protection devices, and the second reference lightning current values (I 4 , I 5 , I 6 and I 7 ) corresponding to the lightning strike on line simulation.

[0065] Based on the simulation results of the lightning strike on tower simulation model, when the lightning arrester is damaged due to lightning strike on tower, through electromagnetic transient simulation analysis, there are three situations: the first situation is that the lightning current value of the lightning strike on tower is the first reference current value I 1 , the situation of damaging 1 lightning protection device, the second situation is that the lightning current value of the lightning strike on tower is the first reference current value I 2 , the situation of damaging 3 lightning protection devices, and the third situation is that the lightning current value of the lightning strike on tower is the first reference current value I 3 , the situation of damaging 5 lightning protection devices, where I 1 < I 2 < I 3 .

[0066] Convert the multiple lightning strikes at each number of lightning strikes in the lightning strike on tower simulation model into single lightning strikes that absorb the same energy:

[0067] I i = f(i) * I 0

[0068] W i = g(Ii )

[0069]

[0070]

[0071] wherein, I i is the current amplitude of the multiple lightning at the i-th lightning strike, I 0 is the current amplitude of the multiple lightning at the first lightning strike, f(i) is the average amplitude ratio of the current amplitude of the multiple lightning at the i-th lightning strike to the current amplitude of the first lightning strike, W i is the energy absorbed by the lightning protection device at the i-th lightning strike, I m is the current amplitude of a single lightning that absorbs the same energy as the multiple lightning at each return stroke, g(I m ) is the total energy of the multiple lightning absorbed by the lightning protection device at each return stroke.

[0072] Specifically, the first damage rate can be determined according to the following formula:

[0073]

[0074] wherein, T 1 is the first damage rate, g is the striking rod rate, N is the total number of lightning strikes on a 100 km line, P 1 , P 2 and P 3 are the first current probability values when the historical lightning current value is in the ranges of I≤I 1 , I 1 <I≤I 2 and I 2 <I≤I 3 respectively, η is the arc building rate, m 1 (such as 1), m 2 (such as 3) and m 3 (such as 5) are the damage numbers of the lightning protection device when the historical lightning current value is in the ranges of I≤I 1 , I 1 <I≤I 2 and I 2 <I≤I 3 respectively, S 1 is the number of lightning arresters installed on a 100 km 10 kV line in the lightning strike tower simulation model.

[0075] Based on the simulation results of the lightning strike line simulation model, when the lightning strike on the line causes damage to the lightning arrester, through electromagnetic transient simulation analysis, there are 4 cases: The first case is that the lightning current value of the lightning strike on the line is the first reference current value I 4 , and the case of damaging 1 lightning protection device, the second case is that the lightning current value of the lightning strike on the line is the first reference current value I5 , the situation of two lightning protection devices being damaged, the third situation is that the lightning current value of the lightning strike on the line is the first reference current value I 6 , the situation of three lightning protection devices being damaged, and the fourth situation is that the lightning current value of the lightning strike on the line is the first reference current value I 7 , the situation of four lightning protection devices being damaged, where I 4 <I 5 <I 6 <I 7 .

[0076] Based on this, the average value of the lightning current values at each number of lightning strikes on the line in the historical lightning data is obtained as the historical lightning current value, and the second damage rate can be determined.

[0077] Specifically, the second damage rate can be determined according to the following formula:

[0078]

[0079] Among them, T 2 is the second damage rate, g is the strike line rate, N is the total number of lightning strikes on a 100 km line, P 4 , P 5 , P 6 and P 7 are the second current probability values when the historical lightning current value is in the ranges of I≤I 4 , I 4 <I≤I 5 , I 5 <I≤I 6 and I 6 <I≤I 7 range, η is the arc building rate, m 4 (such as 1), m 5 (such as 2), m 6 (such as 3) and m 7 (such as 4) are the damage quantities of the lightning protection devices when the historical lightning current value is in the ranges of I≤I 1 , I 1 <I≤I 2 and I 2 <I≤I 3 range, S 2 is the number of lightning arresters installed on a 100 km 10 kV line in the lightning strike line simulation model.

[0080] And the current probability values P (P 1 , P 2 , P 3 , P 4 , P 5 , P 6 and P 7)It can be determined by the following formula:

[0081]

[0082] Wherein, I is the historical lightning current value, and P is the current probability value (such as the first current probability value and the second current probability value).

[0083] Converting the multiple lightning strikes at each strike number in the lightning strike line simulation model into single lightning strikes that absorb the same energy is the same as the process of converting the multiple lightning strikes at each strike number in the above lightning strike tower simulation model into single lightning strikes that absorb the same energy, which will not be elaborated here.

[0084] The damage rate of various lightning protection devices at each lightning strike number can be determined by the following formula:

[0085] T i = T i1 + T i2

[0086] Wherein, T is the damage rate of various lightning protection devices at each lightning strike number, T 1 is the first damage rate of various lightning protection devices at each lightning strike number, and T 2 is the second damage rate of various lightning protection devices at each lightning strike number.

[0087] The multiple lightning strike damage rate of various lightning protection devices can be determined by the following formula:

[0088]

[0089] Wherein, n is the multiple lightning strike damage rate of various lightning protection devices, i is the multiplicity (strike number) of the multiple lightning strikes, T i is the damage rate of various lightning protection devices under the i-th multiple lightning strike, and P i is the ratio of the number of the i-th multiple lightning strikes to the total number of the total multiple lightning strikes.

[0090] Taking lightning protection devices with maximum allowable currents of 100 kA, 110 kA, and 120 kA as examples, it can be seen from Table 2 that if the lightning protection device with a maximum allowable current of 100 kA is analyzed, the multiple lightning strike damage rates of each multiple lightning strike proportion area in multiple ground flash density level areas can be obtained, as shown in Table 2 below:

[0091] Table 2

[0092]

[0093]

[0094] By analyzing the lightning protection equipment with a maximum allowable current of 110 kA, the multiple lightning strike damage rates of each multiple lightning proportion area in multiple ground flash density level areas can be obtained, as shown in Table 3:

[0095] Table 3

[0096]

[0097] By analyzing the one with a maximum allowable current of 120 kA, the multiple lightning strike damage rates of each multiple lightning proportion area in multiple ground flash density level areas can be obtained, as shown in Table 4 below:

[0098] Table 4

[0099]

[0100]

[0101] Based on the data in Tables 2, 3, and 4 above, the multiple lightning strike damage rate of a certain multiple lightning proportion area in a certain ground flash density level area can be compared with its control value (preset multiple lightning strike damage rate). If the multiple lightning strike damage rates of the three lightning protection equipment in the area where the multiple lightning proportion is less than 0.4 in the B1 level area are all less than 0.8, then for the lightning protection equipment with the smallest maximum allowable current (100 kA) among the three lightning protection equipment, it can be determined that this lightning protection equipment (with a maximum allowable current / current-carrying capacity of 100 kA) is the target lightning protection equipment.

[0102] In the embodiment of the present application, through impact testing, the multiple lightning strike damage rate of the entire lightning protection equipment is analyzed, rather than analyzing the lightning protection parts (such as resistor chips) inside the lightning protection equipment. The multiple lightning strike damage rates of each multiple lightning proportion area in multiple ground flash density level areas can be obtained, so as to conduct a comparative analysis with the preset multiple lightning strike damage rates (control values) of each multiple lightning proportion area in multiple ground flash density level areas, thereby determining the target lightning protection equipment for each multiple lightning proportion area in multiple ground flash density level areas, which can effectively guide the differential configuration of lightning protection equipment for each multiple lightning proportion area in multiple ground flash density level areas.

[0103] The embodiment of the present application also provides a device for determining the lightning protection equipment in a multiple lightning area, which may include: a memory configured to store instructions; and a processor configured to call the instructions from the memory and be able to implement the method for determining the lightning protection equipment in a multiple lightning area according to the above.

[0104] The embodiment of the present application also provides a device for determining the lightning protection equipment in a multiple lightning area, which may include: the device for determining the lightning protection equipment in a multiple lightning area according to the above.

[0105] The embodiments of the present application also provide a machine-readable storage medium, on which instructions are stored, and the instructions are used to cause a machine to execute the above method for a lightning protection device for determining a multi-lightning area.

[0106] Those skilled in the art should understand that the embodiments of the present application can be provided as a method, a system, or a computer program product. Therefore, the present application can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0107] The present application is described with reference to the flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing devices generate a device for realizing the functions specified in one process Figure 1 one process or multiple processes and / or blocks Figure 1 one block or multiple blocks.

[0108] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory generate a manufactured article including an instruction device, and the instruction device realizes the functions specified in one process Figure 1 one process or multiple processes and / or blocks Figure 1 one block or multiple blocks.

[0109] These computer program instructions can also be loaded onto a computer or other programmable data processing device, so that a series of operation steps are executed on the computer or other programmable device to generate a computer-implemented process, and thus the instructions executed on the computer or other programmable device provide steps for realizing the functions specified in one process Figure 1 one process or multiple processes and / or blocks Figure 1 one block or multiple blocks.

[0110] In a typical configuration, a computing device includes one or more processors (CPUs), an input / output interface, a network interface, and a memory.

[0111] The memory may include non - permanent memory in the form of computer - readable media, random access memory (RAM) and / or non - volatile memory such as read - only memory (ROM) or flash RAM. The memory is an example of computer - readable media.

[0112] Computer - readable media includes permanent and non - permanent, removable and non - removable media that can store information by any method or technology. The information can be computer - readable instructions, data structures, program modules, or other data. Examples of computer storage media include, but are not limited to, phase - change memory (PRAM), static random - access memory (SRAM), dynamic random - access memory (DRAM), other types of random - access memory (RAM), read - only memory (ROM), electrically erasable programmable read - only memory (EEPROM), flash memory or other memory technologies, compact disc read - only memory (CD - ROM), digital versatile disc (DVD) or other optical storage, magnetic cassette tapes, disk storage or other magnetic storage devices, or any other non - transitory media that can be used to store information that can be accessed by a computing device. As defined herein, computer - readable media does not include transitory computer - readable media, such as modulated data signals and carrier waves.

[0113] It should also be noted that the term "comprising", "including" or any other variant thereof is intended to cover non - exclusive inclusion, such that a process, method, article or apparatus comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or apparatus. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising the element.

[0114] The above are only embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.

Claims

1. A method for determining a lightning protection device in a multiple lightning zone, characterized in that: The method comprises: Acquire historical lightning protection data of multiple lightning protection devices in a multiple lightning protection area, wherein the historical lightning protection data includes historical lightning current values ​​of the multiple lightning protection devices and the probability of each lightning return stroke number; Determine the damage rate of each lightning protection device under each number of lightning return strokes according to the historical lightning current value and a plurality of pre-determined reference lightning current values ​​of the plurality of lightning protection devices, wherein the plurality of reference lightning current values ​​include lightning current values ​​of each preset number of damaged lightning protection devices corresponding to each number of lightning return strokes; Determining multiple lightning strike damage rates of various lightning protection devices according to the probabilities of the respective lightning return stroke times and the damage rates of various lightning protection devices under the respective lightning return stroke times; The multiple types of lightning protection equipment are screened according to the multiple lightning strike damage rates to determine target lightning protection equipment in the multiple lightning area.

2. The method according to claim 1, characterized in that The reference lightning current value includes a first reference lightning current value and a second reference lightning current value, and the determination of the multiple reference lightning current values ​​of the multiple lightning protection devices includes: Determine a plurality of first reference lightning current values ​​of the plurality of lightning protection devices based on a pre-built lightning-strike tower simulation model; Based on the pre-built lightning stroke line simulation model, a plurality of second reference lightning current values ​​of the plurality of lightning protection devices are determined.

3. The method according to claim 2, characterized in that The determining, based on the historical lightning current value and a plurality of pre-determined reference lightning current values ​​of the plurality of lightning protection devices, the damage rate of the various lightning protection devices under each number of lightning return strokes comprises: Determining first damage rates of various lightning protection devices under various lightning return stroke times according to the historical lightning current values ​​and a plurality of pre-determined first reference lightning current values ​​of the various lightning protection devices; Determining second damage rates of various lightning protection devices under various lightning return stroke times according to the historical lightning current values ​​and a plurality of pre-determined second reference lightning current values ​​of the various lightning protection devices; The sum of the first damage rate and the second damage rate is determined to obtain the damage rates of the various lightning protection devices under each number of lightning return strokes.

4. The method according to claim 3, characterized in that The historical lightning protection data also includes a lightning strike location probability, a total number of lightning strikes, and an arcing rate, wherein the lightning strike location probability includes a lightning strike tower probability, and determining a first damage rate of various lightning protection devices under each number of lightning return strokes based on the historical lightning current value and a plurality of first reference lightning current values ​​of the plurality of lightning protection devices determined in advance, including: Determine the product of the first current probability value and the corresponding first preset number to obtain the first damage reference probability value of various lightning protection devices under each number of lightning return strokes, wherein the first current probability value is the amplitude probability of the historical lightning current value, and the multiple first preset numbers are the preset numbers of lightning protection devices damaged corresponding to the range of the first reference lightning current value within which the historical lightning current value is located; Determine the product value of the probability of lightning striking the tower, the total number of lightning strikes, the arcing rate and the first reference damage probability value to obtain a first total damage rate of various lightning protection devices under each number of lightning return strokes; Determine the quotient of the first total damage rate of the various lightning protection devices under each lightning return stroke number and the total number of the multiple lightning protection devices to obtain the first damage rate of the various lightning protection devices under each lightning return stroke number.

5. The method according to claim 3, characterized in that: The historical lightning protection data also includes a lightning strike location probability, a total number of lightning strikes, and an arcing rate, wherein the lightning strike location probability includes a lightning strike line probability, and determining a second damage rate of various lightning protection devices under each number of lightning return strokes based on the historical lightning current value and a plurality of pre-determined second reference lightning current values ​​of the various lightning protection devices, including: Determine the product of the second current probability value and the corresponding second preset number to obtain the second damage reference probability value of various lightning protection devices under each number of lightning return strokes, wherein the second current probability value is the amplitude probability of the historical lightning current value, and the multiple second preset numbers are the preset numbers of lightning protection devices damaged corresponding to the range of the second reference lightning current value within which the historical lightning current value is located; Determine the product value of the lightning strike line probability, the total number of lightning strikes, the arcing rate and the second damage reference probability value to obtain the second total damage rate of various lightning protection devices under each number of lightning return strokes; Determine the quotient of the second total damage rate of the various lightning protection devices under each lightning return stroke number and the total number of the multiple lightning protection devices to obtain the second damage rate of the various lightning protection devices under each lightning return stroke number.

6. The method according to claim 1, characterized in that Determining the multiple lightning strike damage rates of various lightning protection devices according to the probabilities of the lightning strike times and the damage rates of various lightning protection devices under the lightning strike times comprises: The sum of the products of the probabilities of the lightning return stroke times and the damage rates of the various lightning protection devices under the lightning return stroke times is determined to obtain the multiple lightning strike damage rates of the various lightning protection devices.

7. The method according to claim 1, characterized in that The screening of the plurality of lightning protection devices according to the multiple lightning strike damage rates to determine the target lightning protection devices in the multiple lightning strike area includes: Determine among the multiple lightning protection devices the lightning protection device whose multiple lightning strike damage rate is less than the preset multiple lightning strike damage rate corresponding to the multiple lightning area and whose maximum allowable current is the smallest, so as to obtain the target lightning protection device in the multiple lightning area.

8. A device for determining a lightning protection device with multiple lightning zones, characterized in that: include: a memory configured to store instructions; as well as A processor is configured to call the instructions from the memory and implement the method for determining a lightning protection device with multiple lightning areas according to any one of claims 1 to 7 when executing the instructions.

9. A device for determining a lightning protection device in a multiple lightning zone, characterized in that: include: The device for determining multiple lightning protection areas according to claim 8.

10. A machine-readable storage medium, characterized in that: The machine-readable storage medium stores instructions for causing a machine to execute the method for determining a lightning protection device with multiple lightning zones according to any one of claims 1 to 7.

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