Method and system for testing impact diffusion performance of novel grounding anti-corrosion material

Abstract

The invention provides a novel grounding anticorrosion material impact diffusion performance test method and system, and relates to the technical field of electric power grids. According to the invention, an impact diffusion performance test system composed of a test sample of a novel grounding anticorrosive material and a control sample of a conventional grounding conductor material is constructed in a pre-embedding manner, impact diffusion test is carried out, test data of the test sample and the control sample are obtained, and parameter calculation is carried out; according to the method, evaluation indexes such as a diffusion capacitance ratio, a diffusion conductivity ratio, an overall impact diffusion ratio, an on-inductance ratio, an on-resistance ratio and an overall impact on-impedance ratio are obtained, the performance grade of the impact diffusion performance of the novel grounding anticorrosive material is determined according to the evaluation indexes and weights, and the impact diffusion performance test is realized. The test process does not need to wait for building completion, does not need complex equipment, is simple in wiring and small in safety risk, reduces the test difficulty of the novel grounding anti-corrosion material, and achieves the impact diffusion performance test of the novel grounding anti-corrosion material with low cost.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power grid, and in particular to a novel method and system for testing the impact dispersion performance of grounding anti-corrosion materials. Background Art

[0002] The purpose of new grounding anti-corrosion materials is to improve the corrosion resistance of grounding. When introducing anti-corrosion materials, it is necessary to verify its impact dispersion performance. Traditionally, the impact dispersion performance test is carried out by impact grounding resistance.

[0003] For example, Figure 1 The impulse grounding resistance test system shown obtains the maximum values ​​of impulse voltage and impulse current waveforms through impulse grounding resistance test, and regards the impulse grounding resistance as the ratio of the maximum voltage to the maximum current.

[0004] For new grounding and anti-corrosion materials, Figure 1 It is difficult to conduct on-site impulse ground resistance test using the impulse ground resistance test system shown. On the one hand, the impulse ground resistance test can only be carried out after the grounding grid is built. At this time, the new grounding anti-corrosion material has been used. If it fails to pass the test, it will cause a lot of waste and the timeliness of the test is poor. On the other hand, the grounding grid impulse resistance test requires expensive equipment and complicated wiring. The impulse test may cause personal and equipment safety problems and lead to the risk of power outages. Summary of the invention

[0005] The present invention provides a method and system for testing the impact dissipation performance of a novel grounding anti-corrosion material, which can reduce the difficulty of performing the impact dissipation performance test on the novel grounding anti-corrosion material and realize the impact dissipation performance test on the novel grounding anti-corrosion material at a relatively low cost.

[0006] In the first aspect, the present invention provides a method for testing the impact dissipation performance of a new type of grounding and anti-corrosion material, which is applied to an impact dissipation performance testing system, and the impact dissipation performance testing system includes: a test sample composed of a new type of grounding and anti-corrosion material and a control sample composed of a conventional grounding conductor material; the testing method includes: performing an impact dissipation test on the test sample and the control sample to obtain test data of the test sample and the control sample; based on the test data, performing parameter calculation to obtain evaluation indicators of the impact dissipation performance test; the evaluation indicators include dissipation capacitance ratio, dissipation conductivity ratio, overall impact dissipation ratio, on-inductance ratio, on-resistance ratio and overall impact on-impedance ratio; based on the evaluation indicators of the impact dissipation performance test, and the weights of each evaluation indicator, the performance level of the impact dissipation performance of the new type of grounding and anti-corrosion material is determined.

[0007] In one possible implementation, an impact current dispersion test is performed on the test sample and the control sample to obtain test data of the test sample and the control sample, including: using an impact test power supply to perform an impact current dispersion test on the test sample and the control sample to obtain test data, the test data including the output voltage of the current source at each moment, the impact current of the test sample at each moment, the impact current of the control sample at each moment, the impact voltage at the end of the test sample at each moment, and the impact voltage at the end of the control sample at each moment; the wave head time of the output signal of the impact test power supply is 22μs, the half-peak time is 50μs, and the amplitude of the impact voltage is 10kV.

[0008] In a possible implementation, parameter calculation is performed based on the test data to obtain evaluation indicators of the impact dispersion performance test, including: based on the test data, calculating the dispersion current ratio curve and the on-impedance ratio curve of the test sample and the control sample; the dispersion current ratio curve includes the dispersion current ratio under each test environment; the on-impedance ratio curve includes the on-impedance ratio under each test environment; based on the dispersion current ratio curve and the on-impedance ratio curve, calculating the evaluation indicator of the impact dispersion performance test.

[0009] In a possible implementation, based on the test data, calculating the scattered current ratio curve and the on-resistance ratio curve of the test sample and the control sample includes: determining the scattered current ratio curve based on the following formula;

[0010]

[0011] Where K(t) is the scattered current ratio, I1(t) is the impulse current of the test sample, and I2(t) is the impulse current of the control sample;

[0012] Based on the following formula, determine the on-resistance ratio curve;

[0013]

[0014] Where C(t) is the on-resistance ratio, V C (t) is the output voltage of the current source, V1(t) is the impulse voltage at the end of the test sample, V2(t) is the impulse voltage at the end of the control sample, I1(t) is the impulse current of the test sample, and I2(t) is the impulse current of the control sample.

[0015] In a possible implementation, based on the dispersion current ratio curve and the on-resistance ratio curve, calculating the evaluation index of the impact dispersion performance test includes: determining the dispersion capacitance ratio based on the following formula;

[0016]

[0017] Wherein, K0 is the stray capacitance ratio, I1(0) is the impulse current of the test sample at time 0, and I2(0) is the impulse current of the control sample at time 0;

[0018] Based on the following formula, the bulk current conductivity ratio is determined;

[0019]

[0020] Among them, K 50 is the bulk current conductivity ratio, I1(t 50 ) is the impulse current of the test sample at 50μs, I2(t 50 ) is the impulse current of the control sample at 50μs;

[0021] The overall impact dispersion ratio is determined based on the following formula;

[0022]

[0023] Where S is the overall impulse current dispersion ratio, I1(t) is the impulse current of the test sample, and I2(t) is the impulse current of the control sample;

[0024] Based on the following formula, determine the on-inductance ratio;

[0025]

[0026] Where C0 is the on-inductance ratio, V C (0) is the output voltage of the current source at time 0, V1(0) is the impulse voltage at the end of the test sample at time 0, V2(0) is the impulse voltage at the end of the control sample at time 0, I1(0) is the impulse current at time 0 of the test sample, and I2(0) is the impulse current of the control sample at time 0.

[0027] Based on the following formula, the on-resistance ratio is determined;

[0028]

[0029] Among them, C 50 is the on-resistance ratio, V C (t 50 ) is the output voltage of the current source at 50μs, V1(t 50 ) is the impulse voltage at the end of the test sample at 50μs, V2(t 50 ) is the impulse voltage of the control sample at the end of 50μs, I1(t 50 ) is the impulse current of the test sample at 50μs, I2(t 50 ) is the impulse current of the control sample at 50μs;

[0030] Based on the following formula, the overall impulse on-resistance ratio is determined.

[0031]

[0032] Where D is the overall impulse on-resistance ratio, V C (t) is the output voltage of the current source, V1(t) is the impulse voltage at the end of the test sample, V2(t) is the impulse voltage at the end of the control sample, I1(t) is the impulse current of the test sample, and I2(t) is the impulse current of the control sample.

[0033] In one possible implementation, the performance level of the impact dissipation performance of the new grounding anti-corrosion material is determined based on the evaluation indicators of the impact dissipation performance test and the weights of each evaluation indicator, including: determining the score corresponding to each evaluation indicator based on the evaluation indicators of the impact dissipation performance test and the preset evaluation standards; determining the comprehensive score of the impact dissipation performance of the new grounding anti-corrosion material based on the score of each evaluation indicator and the weight of each evaluation indicator; determining the performance level of the impact dissipation performance of the new grounding anti-corrosion material based on the comprehensive score.

[0034] In a possible implementation, based on the scores of each evaluation index and the weight of each evaluation index, a comprehensive score of the impact dispersion performance of the new grounding anti-corrosion material is determined, including: based on the following formula, a comprehensive score of the impact dispersion performance of the new grounding anti-corrosion material is determined;

[0035]

[0036] Among them, F is the comprehensive score, W is i is the weight of the i-th evaluation index, F i is the score of the i-th evaluation indicator.

[0037] In a possible implementation, a method for constructing an impulse dissipation performance test system includes: pre-embedding two test samples and two control samples at a set pre-embedded distance in a horizontal and parallel arrangement; the two test samples are at a first distance, the two control samples are at a first distance, and the adjacent test samples and control samples are at a second distance; the test samples, the control samples, an impulse test power supply, a current electrode, an impulse current measuring device, an impulse voltage measuring device, and a current electrode are connected to form an impulse dissipation performance test system; the current terminals of the two test samples are short-circuited and connected to the first end of the first impulse current measuring device; the second end of the first impulse current measuring device is respectively connected to the second end of the second impulse current measuring device and the first end of the impulse test power supply; the current terminals of the two control samples are short-circuited and connected to the first end of the second impulse current measuring device; the voltage terminals of the two test samples are short-circuited and connected to the first end of the first impulse voltage measuring device; the voltage terminals of the two control samples are short-circuited and connected to the first end of the second impulse voltage measuring device; the second end of the first impulse voltage measuring device, the second end of the second impulse voltage measuring device, and the second end of the impulse test power supply are connected to the current electrode.

[0038] In the second aspect, an embodiment of the present invention provides a new type of grounding and anti-corrosion material impact dissipation performance test device, which is applied to the impact dissipation performance test system, and the impact dissipation performance test system includes: a test sample composed of a new type of grounding and anti-corrosion material and a control sample composed of a conventional grounding conductor material; the test device includes: a test module, which is used to perform an impact dissipation test on the test sample and the control sample to obtain test data of the test sample and the control sample; a processing module, which is used to perform parameter calculation based on the test data to obtain evaluation indicators of the impact dissipation performance test; the evaluation indicators include the dissipation capacitance ratio, the dissipation conductivity ratio, the overall impact dissipation ratio, the on-inductance ratio, the on-resistance ratio and the overall impact on-impedance ratio; based on the evaluation indicators of the impact dissipation performance test, and the weights of each evaluation indicator, the performance level of the impact dissipation performance of the new grounding and anti-corrosion material is determined.

[0039] In the third aspect, an embodiment of the present invention provides a new type of grounding anti-corrosion material impact dissipation performance test system, the impact dissipation performance test system includes two test samples and two control samples pre-buried at a set pre-buried distance in a horizontal and parallel manner, the test samples are composed of a new type of grounding anti-corrosion material, and the control samples are composed of a conventional grounding conductor material; the two test samples are separated by a first distance, the two control samples are separated by a first distance, and the adjacent test samples and control samples are separated by a second distance; the impact dissipation performance test system also includes an impact test power supply, a current electrode, an impact current measuring device, an impact voltage measuring device, a current electrode and a testing device; after the current terminals of the two test samples are short-circuited, they are connected to the first impact current measuring device The first end of the first impulse current measuring device is connected; the second end of the first impulse current measuring device is respectively connected to the second end of the second impulse current measuring device and the first end of the impulse test power supply; after the current terminals of the two control samples are short-circuited, they are connected to the first end of the second impulse current measuring device; after the voltage terminals of the two test samples are short-circuited, they are connected to the first end of the first impulse voltage measuring device; after the voltage terminals of the two control samples are short-circuited, they are connected to the first end of the second impulse voltage measuring device; the second end of the first impulse voltage measuring device, the second end of the second impulse voltage measuring device, and the second end of the impulse test power supply are connected to the current electrode; the testing device is used to perform the steps of the method described in the first aspect and any possible implementation of the first aspect.

[0040] In a fourth aspect, an embodiment of the present invention provides an electronic device, comprising a memory and a processor, the memory storing a computer program, the processor being used to call and run the computer program stored in the memory to perform the steps of the method described in the first aspect and any possible implementation method of the first aspect.

[0041] In a fifth aspect, an embodiment of the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and wherein when the computer program is executed by a processor, the steps of the method described in the first aspect and any possible implementation method of the first aspect are implemented.

[0042] The present invention provides a new type of grounding anti-corrosion material impact dissipation performance test method and system. The present invention pre-buries a test sample composed of a new type of grounding anti-corrosion material and a control sample composed of a conventional grounding conductor material in a pre-buried manner to form an impact dissipation performance test system; and based on the impact dissipation test of the impact dissipation performance test system, the test data of the test sample and the control sample are obtained respectively; then, parameter calculation is performed based on the test data to obtain evaluation indicators such as the dissipation capacitance ratio, the dissipation conductivity ratio, the overall impact dissipation ratio, the on-inductance ratio, the on-resistance ratio and the overall impact on-impedance ratio, and the performance level of the impact dissipation performance of the new type of grounding anti-corrosion material is determined for each evaluation indicator and weight, so as to realize the impact dissipation performance test of the new type of grounding anti-corrosion material. The test process can be performed on the grounding anti-corrosion material alone, without waiting for the completion of the building, and without complex equipment, the wiring is simple, the safety risk is small, the difficulty of the impact dissipation performance test of the new type of grounding anti-corrosion material is reduced, and the impact dissipation performance test of the new type of grounding anti-corrosion material is realized at a relatively low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0044] Figure 1 It is a structural schematic diagram of an impulse ground resistance testing system provided by an embodiment of the present invention;

[0045] Figure 2 It is a schematic diagram of the structure of a test sample composed of a new type of grounding anti-corrosion material provided by an embodiment of the present invention;

[0046] Figure 3 It is a schematic diagram of a pre-buried structure of an impact dispersion performance test system provided by an embodiment of the present invention;

[0047] Figure 4 It is a circuit connection schematic diagram of an impact dispersion performance test system provided by an embodiment of the present invention;

[0048] Figure 5 It is a schematic flow chart of a novel method for testing the impact dispersion performance of grounding anti-corrosion materials provided by an embodiment of the present invention;

[0049] Figure 6 It is a flow chart of another novel method for testing the impact dispersion performance of grounding anti-corrosion materials provided by an embodiment of the present invention;

[0050] Figure 7It is a schematic diagram of a calculation flow of an evaluation index of an impact dispersion performance test provided by an embodiment of the present invention;

[0051] Figure 8 It is a schematic diagram of a performance level evaluation process of the impact dispersion performance of a new type of grounding anti-corrosion material provided by an embodiment of the present invention;

[0052] Fig. 9 It is a structural schematic diagram of a novel grounding anti-corrosion material impact dispersion performance testing device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0053] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present invention.

[0054] In the description of the present invention, unless otherwise specified, " / " means "or", for example, A / B can mean A or B. "And / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, "at least one" and "plurality" refer to two or more. The words "first", "second", etc. do not limit the quantity and execution order, and the words "first", "second", etc. do not limit them to be different.

[0055] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a concrete way for easy understanding.

[0056] In addition, the terms "including" and "having" and any variations thereof mentioned in the description of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or modules is not limited to the listed steps or modules, but may optionally include other steps or modules that are not listed, or may optionally include other steps or modules that are inherent to these processes, methods, products or devices.

[0057] In order to make the purpose, technical solutions and advantages of the present invention more clear, the following will be described through specific embodiments in conjunction with the accompanying drawings of the present invention.

[0058] like Figure 1 As shown, an embodiment of the present invention provides an impact grounding resistance test system. When measuring the traditional scattered current detection method, the current is a square wave ±200V, accounting for 50%, and a square wave voltage with a period of 1s. The voltmeter is responsible for measuring the waveform of the voltage electrode. One side of the square wave voltage source / current source is connected to the grounding electrode, and the other side is connected to the down conductor of the grounding grid. One side of the voltmeter is connected to the voltage electrode, and the other side is connected to the down conductor of the grounding grid. The transfer resistance R=V / I can be measured by the existence of the square wave voltage source, where V and I are the square wave current and square wave voltage amplitudes, respectively. The surface range measurement obtains the local minimum transfer resistance, that is, the location of the underground conductor is found. In addition, the power frequency scattered current characteristics of the new grounding anti-corrosion material can also be determined by the transfer resistance at different positions.

[0059] The traditional method of detecting scattered current is based on ground impedance and ground surface potential. However, it is difficult to characterize the power frequency scattered current characteristics of new anti-corrosion materials. On the one hand, there is a lack of support from professional testing equipment. On the other hand, the current method of measuring ground impedance and ground surface potential is based on expensive ground testing equipment as the hardware basis.

[0060] To solve this technical problem, an embodiment of the present invention provides a new type of grounding anti-corrosion material impact dissipation performance test method and system. Applied to the impact dissipation performance test system, the impact dissipation performance test system includes: a test sample composed of the new type of grounding anti-corrosion material and a control sample composed of a conventional grounding conductor material.

[0061] For example, Figure 2 As shown, the present invention provides a schematic diagram of the structure of a test sample composed of a new type of grounding anti-corrosion material. The test sample is a linear test sample of the new type of grounding anti-corrosion material, with a length of 1m; two control samples of conventional materials of the same size are prepared; both ends of the four samples are reliably connected with cable terminals to facilitate current injection and voltage measurement, that is, current terminals and voltage terminals.

[0062] Figure 3 The present invention provides a schematic diagram of the embedded structure of an impact dispersion performance test system. In a horizontal parallel arrangement, two test samples and two control samples are embedded at a set embedded distance; the two test samples are at a first distance, the two control samples are at a first distance, and the adjacent test samples and control samples are at a second distance.

[0063] like Figure 3As shown, the test samples and control samples are buried in a horizontal parallel arrangement. The burial depth of all samples is 0.8m. The minimum distance between the test samples and the control samples is 5m. The two test samples are arranged in parallel with a spacing of 0.1m, and the two control samples are also arranged in parallel with a spacing of 0.1m. The current electrode is buried 10m or 12.5m outward from the central axis of the test sample and the control sample. The current electrode is a single vertical grounding electrode with a length of 2.5m. After the arrangement is completed, soil backfilling is required, and the test samples and control samples are covered with backfill soil.

[0064] Figure 4 It is a circuit connection schematic diagram of an impact dispersion performance test system provided by an embodiment of the present invention. A test sample, a control sample, an impact test power supply, a current electrode, an impact current measuring device, an impact voltage measuring device, and a current electrode are connected to form an impact dispersion performance test system; after the current terminals of the two test samples are short-circuited, they are connected to the first end of the first impact current measuring device; the second end of the first impact current measuring device is respectively connected to the second end of the second impact current measuring device and the first end of the impact test power supply; after the current terminals of the two control samples are short-circuited, they are connected to the first end of the second impact current measuring device; after the voltage terminals of the two test samples are short-circuited, they are connected to the first end of the first impact voltage measuring device; after the voltage terminals of the two control samples are short-circuited, they are connected to the first end of the second impact voltage measuring device; the second end of the first impact voltage measuring device, the second end of the second impact voltage measuring device, and the second end of the impact test power supply are connected to the current electrode.

[0065] like Figure 4 As shown, the current ends of the test sample and the control sample are connected in parallel and then connected to the impulse test power supply C, and the impulse current flowing through the test sample and the control sample is measured by the impulse current measuring devices I1 and I2 respectively. The impulse voltage at the end of the test sample and the end of the control sample with respect to the current pole is measured by the impulse voltage measuring devices V1 and V2 respectively.

[0066] like Figure 5 and Figure 6 As shown, an embodiment of the present invention provides a novel method for testing the impact dispersion performance of grounding anti-corrosion materials, and the method includes steps S101-S103.

[0067] S101. Perform an impact dispersion test on the test sample and the control sample to obtain test data of the test sample and the control sample.

[0068] As a possible implementation method, an embodiment of the present invention can use an impact test power supply to perform an impact current dispersion test on a test sample and a control sample to obtain test data, wherein the test data includes the output voltage of the current source at each moment, the impact current of the test sample at each moment, the impact current of the control sample at each moment, the impact voltage at the end of the test sample at each moment, and the impact voltage at the end of the control sample at each moment; the wave head time of the output signal of the impact test power supply is 22μs, the half-peak time is 50μs, and the amplitude of the impact voltage is 10kV.

[0069] In some embodiments, the test data includes test values ​​of the first impulse voltage measuring device V1, the second impulse voltage measuring device V2, the first impulse current measuring device I1, the second impulse current measuring device I2 and the current source output voltage VC at each moment after the impulse test power supply is output.

[0070] S102. Calculate parameters based on the test data to obtain evaluation indicators for the impact dispersion performance test.

[0071] In the embodiment of the present application, the evaluation indicators include the scattered capacitance ratio, the scattered conductance ratio, the overall impact scattered current ratio, the on-inductance ratio, the on-resistance ratio and the overall impact on-impedance ratio.

[0072] As a possible implementation, Figure 7 As shown, a schematic diagram of a calculation flow of an evaluation index for an impact dispersion performance test provided by an embodiment of the present invention is shown. Accordingly, step S102 can be specifically implemented as steps S1021-S1022.

[0073] S1021. Based on the test data, calculate the scattered current ratio curve and the on-resistance ratio curve of the test sample and the control sample.

[0074] In some embodiments, the scattered current ratio curve includes scattered current ratios under various test environments; and the on-resistance ratio curve includes on-resistance ratios under various test environments.

[0075] Exemplarily, the embodiment of the present invention may determine the dispersion current ratio curve based on the following formula.

[0076]

[0077] Where K(t) is the current ratio, I1(t) is the impulse current of the test sample, and I2(t) is the impulse current of the control sample.

[0078] As another example, the embodiment of the present invention may determine the on-resistance ratio curve based on the following formula.

[0079]

[0080] Where C(t) is the on-resistance ratio, V C (t) is the output voltage of the current source, V1(t) is the impulse voltage at the end of the test sample, V2(t) is the impulse voltage at the end of the control sample, I1(t) is the impulse current of the test sample, and I2(t) is the impulse current of the control sample.

[0081] S1022. Calculate the evaluation index of the impact current dispersion performance test based on the dispersion current ratio curve and the on-resistance ratio curve.

[0082] Exemplarily, the embodiment of the present invention may determine the bulk capacitance ratio based on the following formula.

[0083]

[0084] Wherein, K0 is the stray capacitance ratio, I1(0) is the impulse current of the test sample at time 0, and I2(0) is the impulse current of the control sample at time 0.

[0085] As another example, the embodiment of the present invention may determine the bulk current conductivity ratio based on the following formula.

[0086]

[0087] Among them, K 50 is the bulk current conductivity ratio, I1(t 50 ) is the impulse current of the test sample at 50μs, I2(t 50 ) is the impulse current of the control sample at 50μs.

[0088] As another example, the embodiment of the present invention may determine the overall impact dispersion ratio based on the following formula.

[0089]

[0090] Where S is the overall impulse current dissipation ratio, I1(t) is the impulse current of the test sample, and I2(t) is the impulse current of the control sample.

[0091] As another example, the embodiment of the present invention may determine the on-inductance ratio based on the following formula.

[0092]

[0093] Where C0 is the on-inductance ratio, V C (0) is the output voltage of the current source at time 0, V1(0) is the impulse voltage at the end of the test sample at time 0, V2(0) is the impulse voltage at the end of the control sample at time 0, I1(0) is the impulse current at time 0 of the test sample, and I2(0) is the impulse current of the control sample at time 0.

[0094] As another example, the embodiment of the present invention may determine the on-resistance ratio based on the following formula.

[0095]

[0096] Among them, C 50 is the on-resistance ratio, V C (t 50 ) is the output voltage of the current source at 50μs, V1(t 50 ) is the impulse voltage at the end of the test sample at 50μs, V2(t 50 ) is the impulse voltage of the control sample at the end of 50μs, I1(t 50 ) is the impulse current of the test sample at 50μs, I2(t 50 ) is the impulse current of the control sample at 50μs.

[0097] As another example, the embodiment of the present invention may determine the overall impulse on-resistance ratio based on the following formula.

[0098]

[0099] Where D is the overall impulse on-resistance ratio, V C (t) is the output voltage of the current source, V1(t) is the impulse voltage at the end of the test sample, V2(t) is the impulse voltage at the end of the control sample, I1(t) is the impulse current of the test sample, and I2(t) is the impulse current of the control sample.

[0100] S103. Based on the evaluation indicators of the impact dispersion performance test and the weights of each evaluation indicator, determine the performance level of the impact dispersion performance of the new grounding anti-corrosion material.

[0101] As a possible implementation manner, step S103 may be specifically implemented as steps S1031 - S1033 .

[0102] S1031. Determine the score corresponding to each evaluation indicator based on the evaluation indicators of the impact dispersion performance test and the preset evaluation standards.

[0103] Exemplarily, the evaluation criteria are shown in Table 1. In the embodiment of the present invention, the power frequency dissipation characteristics of the new grounding anti-corrosion material can be evaluated by the dissipation current ratio K curve, the dissipation capacitance ratio K0, the dissipation resistance ratio K50, the overall impact dissipation ratio S, the on-resistance ratio curve C, the on-inductance ratio C0, the on-resistance ratio C50, and the overall impact on-resistance ratio D.

[0104] Table 1

[0105]

[0106]

[0107] S1032. Based on the scores of each evaluation index and the weight of each evaluation index, determine the comprehensive score of the impact dispersion performance of the new grounding anti-corrosion material.

[0108] Exemplarily, the embodiment of the present invention can determine the comprehensive score of the impact dispersion performance of the new grounding anti-corrosion material based on the following formula.

[0109]

[0110] Among them, F is the comprehensive score, W is i is the weight of the i-th evaluation index, F i is the score of the i-th evaluation indicator.

[0111] S1033. Based on the comprehensive score, determine the performance level of the impact dispersion performance of the new grounding anti-corrosion material.

[0112] For example, Figure 8 As shown, the embodiment of the present invention can set the performance level to four levels: A, B, C, and D. Among them, if the comprehensive score is less than 60 points, the rating is D, between 60 points and 80 points (inclusive) is rated as C, between 80 points and 90 points (inclusive) is rated as B. Above 90 points is rated as A.

[0113] The present invention provides a new type of grounding anti-corrosion material impact dissipation performance test method, by pre-embedding a test sample composed of a new type of grounding anti-corrosion material and a control sample composed of a conventional grounding conductor material, to form an impact dissipation performance test system; and based on the impact dissipation test of the impact dissipation performance test system, test data of the test sample and the control sample are obtained respectively; then, parameter calculation is performed based on the test data to obtain evaluation indicators such as dissipation capacitance ratio, dissipation conductivity ratio, overall impact dissipation ratio, conduction inductance ratio, conduction resistance ratio and overall impact conduction impedance ratio, and the performance level of the impact dissipation performance of the new type of grounding anti-corrosion material is determined for each evaluation indicator and weight, so as to realize the impact dissipation performance test of the new type of grounding anti-corrosion material. The test process can be performed on the grounding anti-corrosion material alone, without waiting for the completion of the building, and without complex equipment, the wiring is simple, the safety risk is small, the difficulty of the impact dissipation performance test of the new type of grounding anti-corrosion material is reduced, and the impact dissipation performance test of the new type of grounding anti-corrosion material is realized at a relatively low cost.

[0114] It should be noted that the on-site detection method of the impulse dispersion characteristics in the embodiment of the present invention is similar to the on-site detection method of the power frequency dispersion characteristics, except that the power supply is different. The impulse dispersion characteristics are simulated by a special impulse power supply. In order to improve the convenience of on-site detection equipment, the project adopts a power electronic power supply to study the simulation of impulse current by a programmable power supply. In fact, it is very difficult for a power electronic power supply to simulate lightning current, but by simulating the spectrum of the low-frequency band of the lightning current and performing spectrum extrapolation, a complete spectrum can be obtained, so that the virtual restoration of the impulse dispersion characteristics of the new grounding anti-corrosion material can be completed in the form of an inverse Fourier transform.

[0115] The present invention adopts an advanced on-site control test scheme, and only a small amount of new grounding anti-corrosion materials and control samples are used to complete the relevant tests. The scattered current ratio curve and the on-impedance ratio curve can be fully detected, and comprehensive indicators such as scattered capacitance ratio, scattered conductance ratio, overall impact scattered current ratio, on-inductance ratio, on-resistance ratio, and overall impact on-impedance ratio can be analyzed. The impact scattered current characteristics of the new grounding anti-corrosion material are comprehensively evaluated, and a comprehensive score is given based on six indicators such as scattered capacitance ratio, scattered conductance ratio, overall impact scattered current ratio, on-inductance ratio, on-resistance ratio, and overall impact on-impedance ratio, and finally the grades are divided according to the comprehensive score.

[0116] It should be understood that the order of execution of the steps in the above embodiment does not necessarily mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present invention.

[0117] The following is an embodiment of the device of the present invention. For details not described in detail therein, reference may be made to the corresponding method embodiment described above.

[0118] Fig. 9 The schematic diagram of the structure of a new type of grounding anti-corrosion material impact dispersion performance test device provided by an embodiment of the present invention is shown. Applied to the impact dispersion performance test system, the impact dispersion performance test system includes: a test sample composed of the new type of grounding anti-corrosion material and a control sample composed of a conventional grounding conductor material. The test device 200 includes a test module 201 and a processing module 202.

[0119] The test module 201 is used to perform an impact dispersion test on the test sample and the control sample to obtain test data of the test sample and the control sample.

[0120] The processing module 202 is used to perform parameter calculation based on the test data to obtain evaluation indicators of the impact dissipation performance test; the evaluation indicators include the dissipation capacitance ratio, the dissipation conductivity ratio, the overall impact dissipation ratio, the on-inductance ratio, the on-resistance ratio and the overall impact on-impedance ratio; based on the evaluation indicators of the impact dissipation performance test and the weights of each evaluation indicator, the performance level of the impact dissipation performance of the new grounding anti-corrosion material is determined.

[0121] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. A new method for testing the impact dispersion performance of grounding anti-corrosion materials, characterized in that: Applied to an impact dispersion performance test system, the impact dispersion performance test system comprises: a test sample composed of a new grounding anti-corrosion material and a control sample composed of a conventional grounding conductor material; the method comprises: Performing an impact dispersion test on the test sample and the control sample to obtain test data of the test sample and the control sample; Based on the test data, parameter calculation is performed to obtain evaluation indicators of the impact dispersion performance test; the evaluation indicators include dispersion capacitance ratio, dispersion conductivity ratio, overall impact dispersion ratio, on-inductance ratio, on-resistance ratio and overall impact on-impedance ratio; Based on the evaluation indexes of the impact dissipation performance test and the weights of the evaluation indexes, the performance grade of the impact dissipation performance of the new grounding anti-corrosion material is determined.

2. The method for testing the impact dissipation performance of the new grounding anti-corrosion material according to claim 1 is characterized in that: The step of performing an impact dispersion test on the test sample and the control sample to obtain test data of the test sample and the control sample includes: An impact test power supply is used to perform an impact current dispersion test on the test sample and the control sample to obtain the test data, wherein the test data includes the output voltage of the current source at each moment, the impact current of the test sample at each moment, the impact current of the control sample at each moment, the impact voltage at the end of the test sample at each moment, and the impact voltage at the end of the control sample at each moment; the wave head time of the output signal of the impact test power supply is 22μs, the half-peak time is 50μs, and the amplitude of the impact voltage is 10kV.

3. The method for testing the impact dissipation performance of the new grounding anti-corrosion material according to claim 1 is characterized in that: The parameter calculation is performed based on the test data to obtain the evaluation index of the impact dispersion performance test, including: Based on the test data, calculating the scattered current ratio curve and the on-resistance ratio curve of the test sample and the control sample; the scattered current ratio curve includes the scattered current ratio under each test environment; the on-resistance ratio curve includes the on-resistance ratio under each test environment; Based on the dispersion current ratio curve and the on-resistance ratio curve, the evaluation index of the impact dispersion performance test is calculated.

4. The method for testing the impact dissipation performance of the new grounding anti-corrosion material according to claim 3 is characterized in that: The step of calculating the scattered current ratio curve and the on-resistance ratio curve of the test sample and the control sample based on the test data comprises: Based on the following formula, the scattered current ratio curve is determined; Wherein, K(t) is the scattered current ratio, I1(t) is the impulse current of the test sample, and I2(t) is the impulse current of the control sample; Based on the following formula, determine the on-resistance ratio curve; Where C(t) is the on-resistance ratio, V C (t) is the output voltage of the current source, V1(t) is the impulse voltage at the end of the test sample, V2(t) is the impulse voltage at the end of the control sample, I1(t) is the impulse current of the test sample, and I2(t) is the impulse current of the control sample.

5. The method for testing the impact dissipation performance of the new grounding anti-corrosion material according to claim 3 is characterized in that: The calculating of the evaluation index of the impact current dispersion performance test based on the dispersion current ratio curve and the on-resistance ratio curve comprises: Determine the bulk capacitance ratio based on the following formula: Wherein, K0 is the bulk capacitance ratio, I1(0) is the impulse current of the test sample at time 0, and I2(0) is the impulse current of the control sample at time 0; Based on the following formula, the bulk current conductivity ratio is determined; Among them, K 50 is the bulk current conductivity ratio, I1(t 50 ) is the impulse current of the test sample at 50μs, I2(t 50 ) is the impulse current of the control sample at 50 μs; The overall impact dispersion ratio is determined based on the following formula; Wherein, S is the overall impact dispersion ratio, I1(t) is the impact current of the test sample, and I2(t) is the impact current of the control sample; Based on the following formula, determine the on-inductance ratio; Where C0 is the on-inductance ratio, V C (0) is the output voltage of the current source at time 0, V1(0) is the impulse voltage at the end of the test sample at time 0, V2(0) is the impulse voltage at the end of the control sample at time 0, I1(0) is the impulse current at time 0 of the test sample, and I2(0) is the impulse current of the control sample at time 0; Based on the following formula, the on-resistance ratio is determined; Among them, C 50 is the on-resistance ratio, V C (t 50 ) is the output voltage of the current source at 50μs, V1(t 50 ) is the impulse voltage at the end of the test sample at 50μs, V2(t 50 ) is the impulse voltage at the end of the control sample at 50 μs, I1(t 50 ) is the impulse current of the test sample at 50μs, I2(t 50 ) is the impulse current of the control sample at 50 μs; The overall impulse on-resistance ratio is determined based on the following formula; Where D is the overall impulse on-resistance ratio, V C (t) is the output voltage of the current source, V1(t) is the impulse voltage at the end of the test sample, V2(t) is the impulse voltage at the end of the control sample, I1(t) is the impulse current of the test sample, and I2(t) is the impulse current of the control sample.

6. The method for testing the impact dissipation performance of the new grounding anti-corrosion material according to claim 1 is characterized in that: The evaluation index based on the impact dispersion performance test and the weight of each evaluation index determine the performance level of the impact dispersion performance of the new grounding anti-corrosion material, including: Based on the evaluation indicators of the impact dispersion performance test and the preset evaluation criteria, determining the score corresponding to each evaluation indicator; Based on the scores of each evaluation index and the weight of each evaluation index, a comprehensive score of the impact dispersion performance of the new grounding anti-corrosion material is determined; Based on the comprehensive score, the performance level of the impact dispersion performance of the new grounding anti-corrosion material is determined.

7. The method for testing the impact dissipation performance of the new grounding anti-corrosion material according to claim 6 is characterized in that: The comprehensive score of the impact dispersion performance of the new grounding anti-corrosion material is determined based on the score of each evaluation index and the weight of each evaluation index, including: Based on the following formula, the comprehensive score of the impact dispersion performance of the new grounding anti-corrosion material is determined; Among them, F is the comprehensive score, W is i is the weight of the i-th evaluation index, F i is the score of the i-th evaluation indicator.

8. The method for testing the impact dissipation performance of the new grounding anti-corrosion material according to claim 1 is characterized in that: The method for constructing the impact dispersion performance testing system comprises: In a horizontal and parallel arrangement, two test samples and two control samples are embedded at a set embedding distance; the distance between the two test samples is a first distance, the distance between the two control samples is a first distance, and the distance between adjacent test samples and control samples is a second distance; The test sample, control sample, impact test power supply, current electrode, impact current measuring device, impact voltage measuring device and current electrode are connected to form an impact current dispersion performance test system; after the current terminals of the two test samples are short-circuited, they are connected to the first end of the first impact current measuring device; the second end of the first impact current measuring device is respectively connected to the second end of the second impact current measuring device and the first end of the impact test power supply; after the current terminals of the two control samples are short-circuited, they are connected to the first end of the second impact current measuring device; after the voltage terminals of the two test samples are short-circuited, they are connected to the first end of the first impact voltage measuring device; after the voltage terminals of the two control samples are short-circuited, they are connected to the first end of the second impact voltage measuring device; the second end of the first impact voltage measuring device, the second end of the second impact voltage measuring device and the second end of the impact test power supply are connected to the current electrode.

9. A new type of grounding anti-corrosion material impact dispersion performance test device, characterized in that: Applied to the impact dispersion performance test system, the impact dispersion performance test system includes: a test sample composed of a new grounding anti-corrosion material and a control sample composed of a conventional grounding conductor material; the test device includes: A testing module, used for performing an impact dispersion test on the test sample and the control sample to obtain test data of the test sample and the control sample; A processing module is used to perform parameter calculation based on the test data to obtain evaluation indicators of the impact dissipation performance test; the evaluation indicators include dissipation capacitance ratio, dissipation conductivity ratio, overall impact dissipation ratio, on-inductance ratio, on-resistance ratio and overall impact on-impedance ratio; based on the evaluation indicators of the impact dissipation performance test and the weights of each evaluation indicator, determine the performance level of the impact dissipation performance of the new grounding anti-corrosion material.

10. A new type of grounding anti-corrosion material impact dispersion performance test system, characterized in that: The impact dispersion performance test system comprises two test samples and two control samples which are pre-buried at a set pre-buried distance in a horizontal and parallel arrangement, wherein the test samples are made of a new type of grounding anti-corrosion material, and the control samples are made of a conventional grounding conductor material; the two test samples are at a first distance, the two control samples are at a first distance, and the adjacent test samples and control samples are at a second distance; The impulse current dispersion performance test system also includes an impulse test power supply, a current electrode, an impulse current measuring device, an impulse voltage measuring device, a current electrode and a testing device; After the current terminals of the two test samples are short-circuited, they are connected to the first end of the first impulse current measuring device; the second end of the first impulse current measuring device is respectively connected to the second end of the second impulse current measuring device and the first end of the impulse test power supply; after the current terminals of the two control samples are short-circuited, they are connected to the first end of the second impulse current measuring device; after the voltage terminals of the two test samples are short-circuited, they are connected to the first end of the first impulse voltage measuring device; after the voltage terminals of the two control samples are short-circuited, they are connected to the first end of the second impulse voltage measuring device; the second end of the first impulse voltage measuring device, the second end of the second impulse voltage measuring device, and the second end of the impulse test power supply are connected to the current electrode; the testing device is used to perform the steps of the method as described in any one of claims 1 to 8.

Images