Metal component-containing insulator chain configuration method and related equipment

Abstract

The embodiment of the invention discloses a metal component-containing insulator chain configuration method and related equipment. The method comprises the following steps: acquiring dirt components on the surface of a target insulator chain in a power transmission line in a to-be-configured region; a test insulator string with the same operating environment as the target insulator string is configured by using the contamination components, so that the test insulator can accurately simulate the metal contamination condition of the target insulator string; the withstand voltage of each insulator in the test insulator string is obtained, and the number of the insulators of the target insulator string is obtained according to the withstand voltage and the preset highest operation phase voltage of the target insulator string, so that the configured insulator string can be ensured to have effective insulation performance under the corresponding metal contamination condition, and the service life of the insulator string is prolonged. Therefore, the insulation performance of the insulator string is improved.

Description

[Technical field]

[0001] The present invention relates to the technical field of insulator configuration, and in particular to a configuration method of an insulator string containing metal components and related equipment. [Background technology]

[0002] Insulators are the most widely used devices in power systems, and the configuration of insulator strings is related to whether the power system can operate safely and stably. Contamination with a high proportion of metal components can easily lead to failure of traditional external insulation designs, and nearby power supply lines need to be shut down for insulator replacement or cleaning. Once an unplanned shutdown occurs, power outages are likely to occur. However, existing insulator configuration methods often fail to fully consider the metal contamination factors under the specific environmental conditions faced by insulators. The presence of metal contaminants and the complexity of their composition will directly affect the hydrophobicity and oleophobicity of the insulator, resulting in a significant decrease in the insulation performance of the insulator in harsh environments, increasing the risk of line failures. [Summary of the invention]

[0003] In view of this, the present invention provides a method for configuring an insulator string containing metal components and related equipment.

[0004] The specific technical scheme of the first embodiment of the present invention is: a method for configuring an insulator string containing metal components, the method comprising: obtaining the contamination components on the surface of a target insulator string in a transmission line in a to-be-configured area; the target insulator is any insulator string in the to-be-configured area; using the contamination components to configure a test insulator string having the same operating environment as the target insulator string; the test insulator string has the same contamination components as the target insulator string; obtaining the withstand voltage of each insulator in the test insulator string; obtaining the number of insulator pieces of the target insulator string according to the withstand voltage and the preset maximum operating phase voltage of the target insulator string; and configuring the target insulator string according to the number of insulator pieces.

[0005] Preferably, the obtaining of the contamination composition on the surface of the target insulator string in the transmission line to be configured in the area includes: obtaining the contamination on the surface of the target insulator string; performing an equivalent salt density test on the contamination to obtain an equivalent salt density test result of the contamination; performing an ash density test on the contamination to obtain an ash density test result of the contamination; obtaining the composition of the metal particles in the contamination and the mass range of the metal particles; the equivalent salt density test result, the ash density test result, the composition of the metal particles and the mass range of the metal particles constitute the contamination composition.

[0006] Preferably, the step of obtaining the withstand voltage of each insulator in the test insulator string comprises: testing the applied voltage of the insulators in the test insulator string by a constant voltage rising and falling method to obtain the withstand voltage of the insulators.

[0007] Preferably, the withstand voltage is a voltage value at which there is a 50% probability that no destructive discharge will occur in the insulator when the same voltage is applied to the insulator multiple times.

[0008] Preferably, obtaining the number of insulator pieces of the target insulator string according to the withstand voltage and the preset maximum operating phase voltage of the target insulator string includes: obtaining the voltage deviation of the constant voltage step-up and step-down method according to the withstand voltage and the applied voltage; and obtaining the number of insulator pieces of the target insulator string according to the voltage deviation, the withstand voltage and the preset maximum operating phase voltage.

[0009] Preferably, the voltage deviation is obtained using the following formula:

[0010]

[0011] Where, σ is the voltage deviation, U 50 is the withstand voltage, N a U is the effective number of times the voltage applied to the insulators in the test insulator string is tested using the constant voltage rise and fall method, fi A voltage is applied to the .

[0012] Preferably, the number of insulator pieces is obtained using the following formula:

[0013]

[0014] Wherein, N is the number of insulators, k1 is the preset safety margin coefficient; k2 is the preset correction coefficient for uneven pollution distribution, k3 is the difference between the probability of single-string flashover and multiple-string parallel flashover, U m is the preset maximum operating phase voltage, U 50 is the withstand voltage, and σ is the voltage deviation.

[0015] The specific technical scheme of the second embodiment of the present invention is: a system for configuring an insulator string containing metal components, the system comprising: a pollution component acquisition module, a configuration module, a withstand voltage acquisition module and an insulator piece number acquisition module; the pollution component acquisition module is used to acquire the pollution components on the surface of the target insulator string in the transmission line in the area to be configured; the target insulator is any insulator string in the area to be configured; the configuration module is used to configure a test insulator string with the same operating environment as the target insulator string using the pollution components; the test insulator string has the same pollution components as the target insulator string; the withstand voltage acquisition module is used to acquire the withstand voltage of each insulator in the test insulator string; the insulator piece number acquisition module is used to acquire the number of insulator pieces in the target insulator string according to the withstand voltage and the preset maximum operating phase voltage of the target insulator string.

[0016] The specific technical solution of the third embodiment of the present invention is: an insulator string configuration device containing metal components, comprising a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, the processor executes the steps of the method described in any one of the first embodiments of the present application.

[0017] The specific technical solution of the fourth embodiment of the present invention is: a computer-readable storage medium storing a computer program, which, when executed by a processor, enables the processor to perform the steps of the method described in any one of the first embodiments of the present application.

[0018] Implementing the embodiments of the present invention will have the following beneficial effects:

[0019] The present invention obtains the contamination components on the surface of the target insulator string in the transmission line to be configured in the area; configures a test insulator string with the same operating environment as the target insulator string using the contamination components, so that the test insulator can accurately simulate the metal contamination situation of the target insulator string; obtains the withstand voltage of each insulator in the test insulator string, and obtains the number of insulators of the target insulator string according to the withstand voltage and the preset maximum operating phase voltage of the target insulator string, so as to ensure that under the corresponding metal contamination situation, the configured insulator string can ensure effective insulation performance, thereby improving the insulation performance of the insulator string.

Brief Description of the Drawings

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, 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 application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A flow chart of the steps of a method for configuring an insulator string containing a metallic component;

[0022] Figure 2 Flow chart of steps for obtaining the contamination composition of the insulator string surface

[0023] Figure 3 A schematic diagram of the structure of the system for configuring an insulator string containing metal components;

[0024] Figure 4 A diagram of the internal structure of a computer device;

[0025] Among them, 201 is a pollution component acquisition module; 202 is a configuration module; 203 is a withstand voltage acquisition module; 204 is an insulator piece number acquisition module. [Specific implementation method]

[0026] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0027] The terms "first", "second", etc. in the specification, claims and drawings of this application are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof 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 optionally includes steps or modules that are not listed, or optionally includes other steps or modules that are inherent to these processes, methods, products or devices.

[0028] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0029] See also Figure 1 , is a flowchart of a method for configuring an insulator string containing a metal component in the first embodiment of the present application, so as to improve the insulation performance of the insulator string, the method comprising:

[0030] Step 101, obtaining the contaminant components on the surface of a target insulator string in a transmission line in a region to be configured; the target insulator is any insulator string in the region to be configured;

[0031] Step 102: using the pollution components to configure a test insulator string having the same operating environment as the target insulator string; the test insulator string has the same pollution components as the target insulator string;

[0032] Step 103, obtaining the withstand voltage of each insulator in the test insulator string;

[0033] Step 104, obtaining the number of insulator pieces of the target insulator string according to the withstand voltage and the preset maximum operating phase voltage of the target insulator string;

[0034] Step 105: configure the target insulator string according to the number of insulator pieces.

[0035] Specifically, when obtaining the metal components and proportions contained in the surface contamination of the target insulator string, the contamination components of the target insulator string are obtained by natural contamination, which means hanging or placing the insulator string in the area to be configured, and retrieving it for analysis after it has experienced a complete contamination season, or directly selecting the insulator string that has been in operation all year round on the transmission line in the area to be configured. Usually, the contamination components of each insulator string in the area to be configured are roughly the same. The same test insulator string is configured according to the obtained contamination components to ensure the authenticity of the test. By obtaining the withstand voltage of each insulator in the test insulator string and obtaining the number of insulator pieces based on the highest operating phase voltage, the number of insulator pieces in the target insulator string is reconfigured according to the number of insulator pieces.

[0036] The method in this embodiment obtains the contamination components on the surface of the target insulator string in the transmission line to be configured in the area; uses the contamination components to configure a test insulator string with the same operating environment as the target insulator string, so that the test insulator can accurately simulate the metal contamination situation of the target insulator string; obtains the withstand voltage of each insulator in the test insulator string, and obtains the number of insulators of the target insulator string according to the withstand voltage and the preset maximum operating phase voltage of the target insulator string, so as to ensure that under the corresponding metal contamination situation, the configured insulator string can ensure effective insulation performance, thereby improving the insulation performance of the insulator string.

[0037] In the specific embodiments, see Figure 2 In step 101, the contamination components on the surface of the target insulator string in the transmission line to be configured in the area are obtained, including:

[0038] Step 201, obtaining contamination on the surface of the target insulator string;

[0039] Step 202: Perform an equivalent salt density test on the pollution to obtain an equivalent salt density test result of the pollution;

[0040] Step 203, performing a gray density test on the contamination to obtain a gray density test result of the contamination;

[0041] Step 204, obtaining the composition of the contaminated metal particles and the mass range of the metal particles; the equivalent salt density test result, the ash density test result, the composition of the metal particles and the mass range of the metal particles constitute the contaminated composition.

[0042] Specifically, a certain amount of distilled water is used to clean all the dirt on the insulating parts on the surface of the insulator string. After fully dissolving and stirring, the conductivity of the solution is measured to find out the corresponding equivalent salt content, which is then converted into an equivalent salt density based on the surface area of ​​the insulator. The dirty liquid is filtered to extract the insoluble matter, which is then dried and weighed to obtain the mass of the ash, which is converted into an ash density based on the surface area of ​​the insulator. The composition of the metal particles is determined through modern analytical techniques such as energy spectrometer and X-ray diffraction, and the metal powder is separated by magnetic separation or chemical separation to obtain the mass range of the metal particles, and the proportion of the metal particles in the dirt on the insulator surface is calculated.

[0043] In a specific embodiment, obtaining the withstand voltage of each insulator in the test insulator string includes: testing the applied voltage of the insulators in the test insulator string using a constant voltage rise and fall method to obtain the withstand voltage of the insulator.

[0044] Specifically, steam mist is applied to the test insulator to make its surface saturated and wet; the pollution test is carried out using the constant voltage rise and fall method to obtain the flashover characteristics of the test insulator, which is the withstand voltage. Among them, the constant voltage rise and fall method is that the insulator undergoes at least 10 "effective" tests at a given pollution level, and the applied voltage level in each test should be determined according to the rise and fall method. The first test that produces a different effect from the previous test is the first "effective" test. This test and at least 9 subsequent tests are regarded as effective tests, and they are used to determine the withstand voltage.

[0045] In a specific embodiment, the withstand voltage is a voltage value at which there is a 50% probability that no destructive discharge occurs in the insulator when the same voltage is applied to the insulator multiple times.

[0046] Specifically, the withstand voltage is obtained using the following formula:

[0047]

[0048] Among them, U 50 50% withstand voltage, unit is kV; U fi is the applied voltage value, in kV; n i For the same applied voltage U fi The number of tests; N is the total valid number.

[0049] In a specific embodiment, obtaining the number of insulator pieces of the target insulator string according to the withstand voltage and the preset maximum operating phase voltage of the target insulator string includes: obtaining the voltage deviation of the constant voltage step-up and step-down method according to the withstand voltage and the applied voltage; and obtaining the number of insulator pieces of the target insulator string according to the voltage deviation, the withstand voltage and the preset maximum operating phase voltage.

[0050] Specifically, the constant voltage rise and fall method is a method that obtains the pollution flashover voltage value of the insulator test sample with a specific flashover probability (such as 50%) by controlling the test voltage to rise and fall under specific conditions. This method plays an important role in the performance evaluation of insulators in power systems. Through the constant voltage rise and fall method, the pollution flashover voltage value of the insulator can be gradually approached, so as to more accurately understand the electrical performance of the insulator under specific pollution conditions. The size of the voltage deviation can reflect the performance difference of the insulator under different conditions, which is helpful to evaluate the stability and reliability of the insulator.

[0051] In a specific embodiment, the voltage deviation is obtained using the following formula:

[0052]

[0053] Where, σ is the voltage deviation, U 50 is the withstand voltage, N a U is the effective number of times the voltage applied to the insulators in the test insulator string is tested using the constant voltage rise and fall method, fi A voltage is applied to the .

[0054] In a specific embodiment, the number of insulator pieces is obtained using the following formula:

[0055]

[0056] Wherein, N is the number of insulators, k1 is the preset safety margin coefficient; k2 is the preset correction coefficient for uneven pollution distribution, k3 is the difference between the probability of single-string flashover and multiple-string parallel flashover, U m is the preset maximum operating phase voltage, U 50 is the withstand voltage, and σ is the voltage deviation.

[0057] In a specific embodiment, when investigating the metal composition and proportion contained in the contamination on the surface of the insulator, the acquisition of the contamination information of the test insulator selects natural contamination, which means hanging or placing the insulator in the area to be analyzed, and retrieving it for analysis after it has experienced a complete contamination season, or directly selecting insulators that have been in operation all year round on the transmission line in the area to be analyzed.

[0058] According to one embodiment of the present application, the collected surface contamination of the line insulator is tested for equivalent salt density and ash density to obtain the mass range of the contaminant, and to obtain the composition and mass ratio of the metal particles. A certain amount of distilled water is used to clean all the contaminants on the insulating parts of the insulator surface. After fully dissolving and stirring, the conductivity of the solution is measured to find the corresponding equivalent salt content, and then converted into an equivalent salt density according to the surface area of ​​the insulator. The equivalent salt density test result is 0.025 mg / cm2. The dirty liquid is filtered and the insoluble matter is extracted. After drying and weighing, the mass of the ash is obtained. According to the surface area of ​​the insulator, it is converted into ash density. The ash density test result is 0.2 mg / cm2. The composition of the metal particles is determined by modern analytical techniques such as energy spectrometer, X-ray diffraction, etc., and then the metal powder is separated by magnetic separation or chemical separation to obtain the mass range of the metal particles and calculate the proportion of metal particles in the contamination on the surface of the insulator. The metal powder in this area is mainly zinc Zn, accounting for about 5% by mass.

[0059] According to the metal components and proportions in the surface pollution of the insulator, the pollution consistent with the actual operating conditions was prepared and the test insulator was contaminated; the pollution level was determined to be C, the salt density was 0.03 mg / cm2, and metal powder Zn was added at a mass ratio of 5%, and the ash density was 6 times the salt density, i.e. 0.18 mg / cm2.

[0060] Steam mist is applied to the test insulator to make its surface saturated and wet; the pollution test is carried out using the constant voltage rise and fall method to obtain the flashover characteristics of the test insulator. According to one embodiment of the present application, the insulator is subjected to at least 10 "effective" tests at a given pollution level, and the applied voltage level in each test should be determined according to the rise and fall method. The first test that produces a different effect from the previous test is the first "effective" test. This test and at least 9 subsequent tests are regarded as effective tests, and they are used to determine the 50% withstand voltage. The 50% withstand voltage is calculated according to the following formula:

[0061]

[0062] Where U 50 is the 50% flashover voltage, in kV; U fi is a certain applied voltage value, in kV; n i For the same applied voltage U fi The number of tests; N is the total effective number; σ is the standard deviation of the test results, in kV. The pollution withstand voltage method U50 of the single-piece XP-160 porcelain insulator obtained in this test is 13.05kV.

[0063] According to an embodiment of the present application, the pollution withstand voltage method is used to determine the number of insulator strings, and an insulator string configuration scheme is proposed. The principle of using the pollution withstand voltage method to determine the number of insulator strings is to make the withstand voltage of the insulator greater than the highest operating phase voltage Um of the system. The pollution withstand voltage Uw that the selected insulator string should reach and the number of insulator strings are calculated as follows:

[0064]

[0065] Where: U 50％ The pollution flashover or pollution withstand voltage value of each insulator with a 50% flashover probability obtained by the constant voltage rise and fall method, in kV; σ% is the standard deviation of the test results. The standard deviation σ% of the test results obtained by different test methods has certain differences. Generally speaking, it can be taken as 0.05, and there are also cases where it is taken as 0.07; N is the number of selected insulator strings; k1 is the safety margin factor, which is generally taken as 1.1; k2 is the correction factor for uneven distribution of pollution; k3 is the difference between the flashover probability of a single string and that of multiple strings in parallel. By comparing the test results of a single string and a double string in parallel, and through mathematical and statistical analysis methods, it is obtained that the k3 value can be taken as 0.92. The transmission line in this area is 500kV, and XP-160 porcelain insulators are used for external insulation protection. The number of insulators required is:

[0066]

[0067] The 50% flashover voltage of a single XP-160 porcelain insulator in a 5% zinc environment is:

[0068]

[0069] Therefore, in this embodiment, N is set to 22 pieces.

[0070] As an important part of the transmission line, the performance of insulators is directly related to the safe and stable operation of the power system. However, in actual operation, various impurities often accumulate on the surface of insulators, which not only reduce the insulation performance of the insulators, but also may cause pollution flashover accidents, posing a serious threat to the safety of the power system. Therefore, it is of great significance to reasonably configure the insulator string according to the impurity components on the surface of the insulator to improve the anti-pollution flashover capability of the insulator and the stability of the power system.

[0071] There are many types of contaminants on the surface of insulators, which can be roughly divided into two categories: natural contaminants and industrial contaminants. Natural contaminants mainly include dust contaminants and saline-alkali contaminants, which mainly come from the natural environment, such as dust and saline-alkali particles in the air. Industrial contaminants mainly include chemical contaminants, cement contaminants, coal smoke contaminants and metal contaminants, which mainly come from waste gas, dirt and smoke discharged during industrial production. The accumulation of these contaminants on the surface of insulators will not only affect the insulation performance of the insulators, but may also form conductive channels, resulting in increased leakage current and even flashover accidents.

[0072] According to the pollutant components on the surface of the insulator, the reasonable configuration of the insulator string can significantly improve the anti-pollution flashover capability of the insulator. First, according to the type and distribution characteristics of the pollutants, select the appropriate insulator material and shape. For example, for areas with more serious saline-alkali pollution, you can choose an insulator material with better resistance to saline-alkali corrosion; for areas with more serious industrial pollution, you can choose an insulator material with better resistance to chemical corrosion. In addition, the shape of the insulator will also affect the accumulation and distribution of pollutants. Therefore, when selecting an insulator, you also need to consider the effect of its shape on the accumulation of pollutants.

[0073] Secondly, the reasonable configuration of the length and number of insulator strings is also an important means to improve the anti-pollution flashover capability of insulators. The accumulation and distribution of pollutants are often related to the length and number of insulator strings. Generally speaking, the longer the insulator string, the more serious the accumulation of pollutants; the more insulator strings there are, the more uneven the distribution of pollutants. Therefore, when configuring insulator strings, it is necessary to reasonably determine the length and number of insulator strings according to the type and distribution characteristics of pollutants, so as to reduce the impact of the accumulation and uneven distribution of pollutants on insulation performance.

[0074] In addition, some auxiliary measures can be taken to improve the anti-pollution flashover capability of insulators. For example, coating the surface of the insulator with a layer of hydrophobic paint can reduce the infiltration and adsorption of pollutants on the surface of the insulator, thereby reducing the conductivity of the pollutants; installing anti-pollution flashover devices on the insulator string, such as anti-pollution skirts and anti-pollution umbrellas, can further reduce the accumulation and uneven distribution of pollutants on the insulation performance.

[0075] In summary, the reasonable configuration of insulator strings according to the pollution components on the insulator surface can significantly improve the anti-pollution flashover capability of the insulator and the stability of the power system. This not only helps to reduce the occurrence of pollution flashover accidents, but also prolongs the service life of the insulator and reduces the operation and maintenance costs of the power system. Therefore, in the design and operation of the power system, the pollution components on the insulator surface should be fully considered and the insulator strings should be reasonably configured to ensure the safe and stable operation of the power system.

[0076] In the specific embodiments, see Figure 3, is a structural schematic diagram of an insulator string configuration system containing metal components in the second embodiment of the present application, the system comprising: a pollution component acquisition module 201, a configuration module 202, a withstand voltage acquisition module 203 and an insulator piece number acquisition module 204; the pollution component acquisition module 201 is used to acquire the pollution components on the surface of the target insulator string in the transmission line in the area to be configured; the target insulator is any insulator string in the area to be configured; the configuration module 202 is used to configure a test insulator string with the same operating environment as the target insulator string using the pollution components; the test insulator string has the same pollution components as the target insulator string; the withstand voltage acquisition module 203 is used to acquire the withstand voltage of each insulator in the test insulator string; the insulator piece number acquisition module 204 is used to acquire the number of insulator pieces of the target insulator string according to the withstand voltage and the preset maximum operating phase voltage of the target insulator string.

[0077] The system in this embodiment obtains the contamination components on the surface of the target insulator string in the transmission line to be configured in the area; uses the contamination components to configure a test insulator string with the same operating environment as the target insulator string, so that the test insulator can accurately simulate the metal contamination situation of the target insulator string; obtains the withstand voltage of each insulator in the test insulator string, and obtains the number of insulators of the target insulator string according to the withstand voltage and the preset maximum operating phase voltage of the target insulator string, so as to ensure that under the corresponding metal contamination situation, the configured insulator string can ensure effective insulation performance, thereby improving the insulation performance of the insulator string.

[0078] In a specific embodiment, the third embodiment of the present application provides a metal-containing insulator string configuration device, including a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, the processor executes the steps of the method described in any one of the first embodiments of the present application. The device in this embodiment obtains the number of insulator pieces of the target insulator string according to the withstand voltage and the preset maximum operating phase voltage of the target insulator string, thereby ensuring that the configured insulator string can ensure effective insulation performance under the corresponding metal contamination condition, thereby improving the insulation performance of the insulator string.

[0079] In a specific embodiment, the fourth embodiment of the present application provides a computer-readable storage medium storing a computer program, and when the computer program is executed by a processor, the processor executes the steps of the method described in any one of the first embodiments of the present application. The storage medium in this embodiment obtains the number of insulators of the target insulator string according to the withstand voltage and the preset maximum operating phase voltage of the target insulator string, thereby ensuring that the configured insulator string can ensure effective insulation performance under the corresponding metal contamination condition, thereby improving the insulation performance of the insulator string.

[0080] Figure 4 The internal structure of a computer device in one embodiment is shown. The computer device can be a terminal or a server. Figure 4 The computer device includes a processor, a memory, etc. connected via a system bus. The memory includes a non-volatile storage medium and an internal memory. The non-volatile storage medium of the computer device stores an operating system and may also store a computer program. When the computer program is executed by the processor, the processor can implement the method in this embodiment. The internal memory may also store a computer program. When the computer program is executed by the processor, the processor can implement the method in this embodiment. Those skilled in the art can understand that Figure 4 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0081] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

[0082] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A method for configuring an insulator string containing metal components, characterized in that: The method comprises: Obtaining the contaminant components on the surface of a target insulator string in a transmission line in a region to be configured; the target insulator is any insulator string in the region to be configured; Using the contamination components, configuring a test insulator string having the same operating environment as the target insulator string; the test insulator string has the same contamination components as the target insulator string; Obtaining the withstand voltage of each insulator in the test insulator string; Acquire the number of insulator pieces of the target insulator string according to the withstand voltage and the preset maximum operating phase voltage of the target insulator string; The target insulator string is configured according to the number of insulator pieces.

2. The method for configuring an insulator string containing metal components according to claim 1, characterized in that: The step of obtaining the contamination components on the surface of the target insulator string in the transmission line to be configured in the area includes: Obtaining contamination on the surface of the target insulator string; Performing an equivalent salt density test on the pollution to obtain an equivalent salt density test result of the pollution; Performing a gray density test on the contamination to obtain a gray density test result of the contamination; The composition of the contaminated metal particles and the mass range of the metal particles are obtained; the equivalent salt density test result, the ash density test result, the composition of the metal particles and the mass range of the metal particles constitute the contaminated composition.

3. The method for configuring an insulator string containing metal components according to claim 1, characterized in that: The step of obtaining the withstand voltage of each insulator in the test insulator string comprises: The applied voltage of the insulators in the test insulator string is tested by a constant voltage rise and fall method to obtain the withstand voltage of the insulators.

4. The method for configuring an insulator string containing metal components according to claim 3, characterized in that: The withstand voltage is a voltage value at which there is a 50% probability that no destructive discharge occurs in the insulator under the condition that the same voltage is applied to the insulator multiple times.

5. The method for configuring an insulator string containing metal components according to claim 3, characterized in that: The step of obtaining the number of insulator pieces of the target insulator string according to the withstand voltage and the preset maximum operating phase voltage of the target insulator string includes: Obtaining a voltage deviation of the constant voltage step-up / down method according to the withstand voltage and the applied voltage; The number of insulator pieces of the target insulator string is obtained according to the voltage deviation, the withstand voltage and the preset maximum operating phase voltage.

6. The method for configuring an insulator string containing metal components according to claim 5, characterized in that: The voltage deviation is obtained using the following formula: Where, σ is the voltage deviation, U 50 is the withstand voltage, N a U is the effective number of times the voltage applied to the insulators in the test insulator string is tested using the constant voltage rise and fall method, fi A voltage is applied to the .

7. The method for configuring an insulator string containing metal components according to claim 5, characterized in that: The number of insulator pieces is obtained using the following formula: Wherein, N is the number of insulators, k1 is the preset safety margin coefficient; k2 is the preset correction coefficient for uneven pollution distribution, k3 is the difference between the probability of single-string flashover and multiple-string parallel flashover, U m is the preset maximum operating phase voltage, U 50 is the withstand voltage, and σ is the voltage deviation.

8. An insulator string configuration system containing metal components, characterized in that: The system comprises: a pollution component acquisition module, a configuration module, a withstand voltage acquisition module and an insulator piece number acquisition module; The pollution component acquisition module is used to acquire the pollution components on the surface of the target insulator string in the transmission line of the area to be configured; the target insulator is any insulator string in the area to be configured; The configuration module is used to configure a test insulator string having the same operating environment as the target insulator string using the pollution components; the test insulator string has the same pollution components as the target insulator string; The withstand voltage acquisition module is used to obtain the withstand voltage of each insulator in the test insulator string; The insulator piece number acquisition module is used to acquire the number of insulator pieces of the target insulator string according to the withstand voltage and a preset maximum operating phase voltage of the target insulator string.

9. An insulator string configuration device containing metal components, comprising a memory and a processor, characterized in that: The memory stores a computer program, and when the computer program is executed by the processor, the processor is caused to perform the steps of the method according to any one of claims 1 to 7.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the processor is caused to perform the steps of the method according to any one of claims 1 to 7.

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