Method and device for determining information on interference of a cable line with a buried oil and gas pipeline

Abstract

The application discloses a method and device for determining interference information of a cable line on a buried oil and gas pipeline. The method comprises: obtaining mutual correlation parameters of the cable line and the buried oil and gas pipeline; obtaining corresponding topological information and cross-laying areas of the cable line and the buried oil and gas pipeline; generating an electromagnetic interference simulation model according to the mutual correlation parameters, the cross-laying areas, the corrosion layer resistivity and the topological information; determining electromagnetic influence parameters of different working conditions of the cable line on the buried oil and gas pipeline according to the model; and determining interference current information and interference voltage information of the cable line on the pipeline according to the electromagnetic influence parameters, thereby solving the problem that in the related art, when a high-voltage transmission line is close to or crosses a buried oil and gas pipeline, the power transmission line will induce interference voltage and current on the buried oil and gas pipeline under normal operation and various fault working conditions, which will long-term affect or exceed the safety limit, and easily cause hidden dangers to the safety of personnel, the pipeline and related equipment.

Description

Method and device for determining interference information of cable lines to buried oil and gas pipelines Technical Field

[0001] This application relates to the field of power grids, and more specifically, to a method and apparatus for determining interference information of cable lines to buried oil and gas pipelines. Background Technology

[0002] With increasing energy demand, the construction of power transmission lines and buried oil and gas pipelines has grown rapidly. It is difficult to avoid the proximity or intersection of high-voltage power transmission lines and buried oil and gas pipelines, especially in more developed and densely populated cities. To reduce land occupation, buried oil and gas pipelines are often constructed in parallel with high-voltage power transmission lines, or even sharing corridors. This has led to an increasingly prominent problem of electromagnetic interference from power transmission lines on oil and gas pipelines.

[0003] In related technologies, high-voltage transmission lines can induce interference voltages and currents on buried oil and gas pipelines under various conditions, such as normal operation, short-circuit faults, and lightning strikes on lines or towers. If the interference persists or exceeds the permissible safety limits of buried oil and gas pipelines, it can pose a threat to the safety of maintenance or surveying personnel, as well as the safe operation of pipelines and related equipment. Furthermore, as the voltage level of cable lines continues to increase, the electromagnetic influence of cable lines on buried oil and gas pipelines is becoming increasingly prominent.

[0004] There is currently no effective solution to the above problems. Summary of the Invention

[0005] This application provides a method and apparatus for determining interference information of cable lines to buried oil and gas pipelines, in order to at least solve the technical problem in the related art that when high-voltage transmission lines are close to or cross buried oil and gas pipelines, interference voltages and currents are induced on the buried oil and gas pipelines under normal operation and various fault conditions, which have a long-term impact or exceed safety limits and are likely to cause hidden dangers to the safety of personnel, pipelines and related equipment.

[0006] According to one aspect of the embodiments of this application, a method for determining interference information of a cable line to a buried oil and gas pipeline is provided, comprising: acquiring the mutual correlation parameters of the cable line and the buried oil and gas pipeline, wherein the mutual correlation parameters include at least the target soil resistivity of the area where the cable line and the buried oil and gas pipeline are located, the proximity distance between the cable line and the buried oil and gas pipeline, and the parallel length; acquiring the topological information corresponding to the cable line and the buried oil and gas pipeline respectively, and the cross-laying area of ​​the buried oil and gas pipeline and the cable line; generating an electromagnetic interference simulation model based on the mutual correlation parameters, the cross-laying area, the resistivity of the anti-corrosion layer of the buried oil and gas pipeline, and the topological information corresponding to the cable line and the buried oil and gas pipeline respectively, wherein the electromagnetic interference simulation model is used to reflect the electromagnetic environment of the cable line and the buried oil and gas pipeline under different operating conditions; determining the electromagnetic influence parameters of the cable line on the buried oil and gas pipeline under different operating conditions based on the electromagnetic interference simulation model, wherein the electromagnetic influence parameters include electromagnetic contact voltage and induced electromotive force; and determining the interference current information and interference voltage information of the cable line on the buried oil and gas pipeline based on the electromagnetic influence parameters.

[0007] Optionally, obtaining the target soil resistivity of the area where the cable line and the buried oil and gas pipeline are located includes: measuring the soil resistivity of the area where the cable line is located and the soil resistivity of the area where the buried oil and gas pipeline is located, respectively, wherein the soil resistivity measurement points cover the entire laying path of the cable line and the buried oil and gas pipeline; determining the area where the cable line is located and the area where the buried oil and gas pipeline is located based on the entire laying path of the cable line and the buried oil and gas pipeline; determining the resistivity weight corresponding to the cable line based on the area where the cable line is located; determining the resistivity weight corresponding to the buried oil and gas pipeline based on the area where the buried oil and gas pipeline is located; and calculating the target soil resistivity by performing a weighted average calculation of the soil resistivity of the area where the cable line is located and the soil resistivity of the area where the buried oil and gas pipeline is located based on the resistivity weights corresponding to the cable line and the buried oil and gas pipeline.

[0008] Optionally, obtaining the target soil resistivity of the area where the cable line and the buried oil and gas pipeline are located includes: when it is detected that the area where the cable line and the buried oil and gas pipeline are located includes K types of soil, measuring the soil resistivity of the area corresponding to each soil type to obtain K types of soil resistivity, where K is an integer greater than 1; and integrating the K types of soil resistivity into the target soil resistivity based on the area corresponding to each soil type and the distribution of the K types of soil in the area where they are located.

[0009] Optionally, based on the area corresponding to each soil type and the distribution of the K soil types in the common area, the resistivity of the K soil types is integrated into a target soil resistivity. This includes: determining the sensitivity of each soil type to electromagnetic interference based on the area corresponding to each soil type and the distribution of the K soil types, wherein the distribution of the K soil types includes the continuity of the distribution of the K soil types and the relative positional relationship of each soil type with the cable line and the buried oil and gas pipeline; determining the resistivity weight corresponding to each soil type based on the sensitivity of each soil type to electromagnetic interference and the distribution density of each soil type in the preset area around the cable line or the buried oil and gas pipeline; and calculating the weighted average of the K soil resistivity based on the resistivity weight corresponding to each soil type to obtain the target soil resistivity.

[0010] Optionally, the sensitivity of each soil type to electromagnetic interference is positively correlated with the resistivity weight corresponding to that soil type, and the distribution density of each soil type in a preset area around the cable line or buried oil and gas pipeline is positively correlated with the resistivity weight corresponding to that soil type.

[0011] Optionally, an electromagnetic interference simulation model is generated based on the cross-laying parameters, the cross-laying area, the resistivity of the anti-corrosion layer of the buried oil and gas pipeline, and the topological information corresponding to the cable line and the buried oil and gas pipeline, respectively. This includes: generating a pipeline model based on the cross-laying area, the resistivity of the anti-corrosion layer of the buried oil and gas pipeline, and the topological information corresponding to the cable line and the buried oil and gas pipeline, wherein the pipeline model is used to reflect the current distribution information of each conductor in the cable line and the buried oil and gas pipeline, the self-impedance information of each conductor and the circuit of arbitrary shape, the mutual impedance information, and the capacitance information; generating a soil structure equivalent model based on the cross-laying parameters, wherein the soil structure equivalent model is used to reflect the magnetic field information in the air and soil in the area where the cable line and the buried oil and gas pipeline are located, the electric field information in the air and soil, and the potential information of the conductors and soil; and coupling the pipeline model and the soil structure equivalent model to generate an electromagnetic interference simulation model.

[0012] Optionally, the electromagnetic influence parameters of the cable line on the buried oil and gas pipeline under different operating conditions are determined based on the electromagnetic interference simulation model. This includes: setting N kinds of constraints for the electromagnetic interference simulation model, where each constraint is used to simulate an operating condition scenario of the interaction between the cable line and the buried oil and gas pipeline; controlling the electromagnetic interference simulation model to perform simulation operations under each constraint condition, and obtaining the electromagnetic influence parameters of the cable line on the buried oil and gas pipeline under the corresponding operating condition from the simulation operation results.

[0013] Optionally, the N constraints include at least one constraint: a first constraint to simulate the interaction between the cable line and the buried oil and gas pipeline when transmitting normal operating current; a second constraint to simulate the interaction between the cable line and the buried oil and gas pipeline when a short-circuit current occurs; a third constraint to simulate the interaction between the cable line and the buried oil and gas pipeline when a lightning strike occurs; and a fourth constraint to simulate the changes in the corrosion protection layer resistance and grounding transformation of the buried oil and gas pipeline.

[0014] Optionally, the induced electromotive force (EMF) of the cable line on the buried oil and gas pipeline under different operating conditions is determined based on the electromagnetic interference simulation model, including: determining the magnetic induction intensity and the area defined by the closed loop of the cable line on the buried oil and gas pipeline under different operating conditions based on the electromagnetic interference simulation model; determining the loop magnetic flux based on the magnetic induction intensity and the area defined by the closed loop; determining the magnetic vector potential of the target point on the buried oil and gas pipeline based on the loop magnetic flux, wherein the direction of the magnetic vector potential is consistent with the direction of the current in the cable line; and determining the induced EMF based on the boundary length of the magnetic vector potential and the closed loop.

[0015] Optionally, the electromagnetic contact voltage of the cable line to the buried oil and gas pipeline under different operating conditions is determined based on the electromagnetic interference simulation model, including: obtaining the real and imaginary parts of the magnetic vector potential, wherein the real part of the magnetic vector potential is used to represent the component of the magnetic vector potential vector in the real space, and the imaginary part of the magnetic vector potential is used to represent the component of the magnetic vector potential vector in the imaginary space; detecting the magnetic vector component along the first direction and the magnetic vector component along the second direction in the path corresponding to the magnetic vector potential, wherein the first direction and the second direction are parallel to each other, and the starting point of the first direction is the top end point of the buried oil and gas pipeline, the ending point of the first direction is the top end point of the cable line, the starting point of the second direction is the bottom end point of the cable line, and the ending point of the second direction is the bottom end point of the buried oil and gas pipeline; determining the electromagnetic contact voltage based on the magnetic vector component along the first direction, the magnetic vector component along the second direction, and the real and imaginary parts of the magnetic vector potential in the path corresponding to the magnetic vector potential.

[0016] Optionally, the interference current and interference voltage information of the cable line to the buried oil and gas pipeline can be determined based on electromagnetic influence parameters, including: determining the interference current information based on the capacitance of the buried oil and gas pipeline, the contact resistance between the buried oil and gas pipeline and the soil, and the induced electromotive force; and determining the interference voltage information based on the resistance of the buried oil and gas pipeline, the electromagnetic contact voltage, and the interference current information.

[0017] According to another aspect of the embodiments of this application, an interference information determination device for cable lines to buried oil and gas pipelines is also provided, comprising: a first acquisition unit, configured to acquire the mutual correlation parameters between the cable line and the buried oil and gas pipeline, wherein the mutual correlation parameters include at least the target soil resistivity of the area where the cable line and the buried oil and gas pipeline are located, the proximity distance between the cable line and the buried oil and gas pipeline, and the parallel length; a second acquisition unit, configured to acquire the topological information corresponding to the cable line and the buried oil and gas pipeline respectively, and the cross-laying area between the buried oil and gas pipeline and the cable line; and a model building unit, configured to determine the interference information between the cable line and the buried oil and gas pipeline based on the mutual correlation parameters and the cross-laying area between the cable line and the buried oil and gas pipeline ... cross-laying area. An electromagnetic interference (EMI) simulation model is generated based on the laying area, the resistivity of the anti-corrosion layer of the buried oil and gas pipeline, and the topological information corresponding to the cable line and the buried oil and gas pipeline, respectively. The EMI simulation model reflects the electromagnetic environment of the cable line and the buried oil and gas pipeline under different operating conditions. A first determining unit is used to determine the electromagnetic influence parameters of the cable line on the buried oil and gas pipeline under different operating conditions based on the EMI simulation model. The electromagnetic influence parameters include electromagnetic contact voltage and induced electromotive force. A second determining unit is used to determine the interference current and interference voltage information of the cable line on the buried oil and gas pipeline based on the electromagnetic influence parameters.

[0018] According to another aspect of the embodiments of this application, a computer-readable storage medium is also provided, which stores a computer program, wherein when the computer program is executed, the device where the computer-readable storage medium is located executes the above-described method for determining interference information of cable lines to buried oil and gas pipelines.

[0019] According to another aspect of the embodiments of this application, an electronic device is also provided, including one or more processors and a memory, the memory being used to store one or more programs, wherein when the one or more programs are executed by the one or more processors, the one or more processors cause the one or more processors to perform the above-described method for determining interference information of cable lines to buried oil and gas pipelines.

[0020] According to another aspect of the embodiments of this application, a computer program product is also provided, including a computer program or instructions, which, when executed by a processor, implement the above-described method for determining interference information of cable lines to buried oil and gas pipelines.

[0021] In this embodiment, the data simulation system first acquires the interrelation parameters between the cable line and the buried oil and gas pipeline. These parameters include at least the target soil resistivity of the area where both the cable line and the buried oil and gas pipeline are located, the proximity distance between them, and their parallel length. The system then acquires the topological information corresponding to both the cable line and the buried oil and gas pipeline, as well as the area of ​​intersection between them. Based on the interrelation parameters, the intersection area, the resistivity of the anti-corrosion layer of the buried oil and gas pipeline, and the topological information of both the cable line and the buried oil and gas pipeline, an electromagnetic interference (EMI) simulation model is generated. This model reflects the electromagnetic environment of the cable line and the buried oil and gas pipeline under different operating conditions. Next, based on the EMI simulation model, the system determines the electromagnetic influence parameters of the cable line on the buried oil and gas pipeline under different operating conditions. These parameters include electromagnetic contact voltage and induced electromotive force. Finally, based on the electromagnetic influence parameters, the system determines the interference current and voltage information of the cable line on the buried oil and gas pipeline.

[0022] As described above, the data simulation system, by acquiring the interrelationship parameters between cable lines and buried oil and gas pipelines, including key factors such as target soil resistivity, proximity distance, and parallel length, as well as their topological information and cross-laying area, can comprehensively and accurately reflect the actual relationship between the two. Based on the interrelationship parameters, cross-laying area, the resistivity of the anti-corrosion layer of the buried oil and gas pipeline, and the corresponding topological information of the cable lines and buried oil and gas pipelines, an electromagnetic interference simulation model can accurately simulate the electromagnetic impact of cable lines on buried oil and gas pipelines under different operating conditions. The electromagnetic impact parameters determined by the electromagnetic interference simulation model, such as electromagnetic contact voltage and induced electromotive force, provide a basis for subsequent safety assessments and protective measures, helping to identify potential risks in advance and ensure the safe and stable operation of buried oil and gas pipelines.

[0023] The data simulation system determines the interference current and voltage information of cable lines on buried oil and gas pipelines based on electromagnetic influence parameters, enabling quantitative analysis of the degree of electromagnetic interference. This allows technicians to clearly understand the specific interference impact of cable lines on buried oil and gas pipelines under different laying conditions, facilitating pipeline laying optimization. For example, the laying distance and method between cables and pipelines can be reasonably adjusted based on the quantitative results, effectively reducing the level of electromagnetic interference. This ensures that the electromagnetic environment of buried oil and gas pipelines remains within a safe range, effectively avoiding pipeline damage, equipment failure, and personnel safety risks caused by excessive electromagnetic interference, and improving the overall reliability and safety of the buried oil and gas pipeline system.

[0024] The data simulation system can comprehensively assess and predict the electromagnetic interference between cable lines and buried oil and gas pipelines before construction, facilitating advance planning and protection. By understanding the electromagnetic interference under different operating conditions in advance, technicians can take corresponding protective measures, such as selecting appropriate anti-corrosion materials and optimizing cable laying methods, to reduce the impact of electromagnetic interference on buried oil and gas pipelines. This not only helps ensure the safe operation of buried oil and gas pipelines but also effectively reduces project risks and costs. During project implementation, it reduces pipeline damage, equipment failures, and increased maintenance costs caused by electromagnetic interference, improving the overall efficiency and safety of the project. Furthermore, it solves the technical problem in related technologies where high-voltage transmission lines, under normal operation and various fault conditions, induce interference voltages and currents on buried oil and gas pipelines when they are close to or cross them, which can have long-term effects or exceed safety limits, potentially posing safety hazards to personnel, pipelines, and related equipment. Attached Figure Description

[0025] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0026] Figure 1 is a schematic diagram of an optional method for determining interference information of cable lines to buried oil and gas pipelines according to an embodiment of this application.

[0027] Figure 2 is a flowchart of an optional method for determining interference information of cable lines to buried oil and gas pipelines according to an embodiment of this application;

[0028] Figure 3 is a schematic diagram of an optional cable line interference information determination device for buried oil and gas pipelines according to an embodiment of this application. Detailed Implementation

[0029] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0030] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0031] According to an embodiment of this application, a method embodiment for determining interference information of cable lines to buried oil and gas pipelines is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0032] According to the embodiments of this application, a data simulation system can be used as the execution subject of the method for determining the interference information of cable lines to buried oil and gas pipelines in the embodiments of this application. The system can be a software system or an embedded system combining software and hardware. Of course, the execution subject of the method in the embodiments of this application can also be other forms of execution subject, such as devices, equipment, etc. It should be known by those skilled in the art that this application does not particularly limit the specific form of the execution subject.

[0033] Figure 1 illustrates a method for determining interference information of cable lines to buried oil and gas pipelines according to an embodiment of this application. As shown in Figure 1, the method includes the following steps:

[0034] Step S101: Obtain the inter-correlation parameters between the cable line and the buried oil and gas pipeline. The inter-correlation parameters include at least the target soil resistivity of the area where the cable line and the buried oil and gas pipeline are located, the proximity distance between the cable line and the buried oil and gas pipeline, and the parallel length.

[0035] Optionally, the target soil resistivity can refer to the soil resistivity in the area shared by the cable line and the buried oil and gas pipeline. Soil resistivity is a physical quantity that measures the degree to which soil impedes current, reflecting the soil's conductivity. The higher the resistivity, the worse the soil's conductivity. It can be used to assess electromagnetic interference, and soil resistivity directly affects the degree of electromagnetic coupling between the cable line and the buried oil and gas pipeline.

[0036] Alternatively, proximity distance can refer to the minimum horizontal distance between the cable line and the buried oil and gas pipeline, which can be used to assess electromagnetic interference. Proximity distance affects the strength of the electromagnetic field interaction between the cable line and the buried oil and gas pipeline. The smaller the proximity distance, the stronger the electromagnetic coupling, and the higher the potential risk of electromagnetic interference.

[0037] Optionally, parallel length can refer to the length of the cable line and the buried oil and gas pipeline laid parallel to each other in the horizontal direction. This can be used to assess electromagnetic interference. A longer parallel laying length will increase the electromagnetic coupling area between the cable line and the buried oil and gas pipeline, thereby increasing the risk of electromagnetic interference.

[0038] This application embodiment obtains the interrelation parameters between the cable line and the buried oil and gas pipeline, including the target soil resistivity, proximity distance, and parallel length, to facilitate a comprehensive assessment of the electromagnetic interference (EMI) caused by the cable line to the buried oil and gas pipeline. Soil resistivity directly affects the propagation and coupling effect of the electromagnetic field; lower soil resistivity can effectively reduce EMI. Proximity distance and parallel length determine the electromagnetic coupling strength between the cable line and the buried oil and gas pipeline; smaller proximity distances and parallel lengths can significantly reduce EMI. Accurate measurement and analysis of the interrelation parameters provide fundamental data for the subsequent construction of an EMI simulation model, thereby enabling accurate prediction and assessment of the EMI impact of the cable line on the buried oil and gas pipeline under different operating conditions.

[0039] Step S102: Obtain the topology information corresponding to the cable line and the buried oil and gas pipeline, as well as the cross-laying area of ​​the buried oil and gas pipeline and the cable line.

[0040] Optionally, topology information can refer to the layout and connection relationships of cable lines and buried oil and gas pipelines, including the starting point, ending point, branch points, intersection points, and overall laying path of the cable lines and buried oil and gas pipelines. This topology information can be used to describe the spatial distribution and interrelationships of cable lines and buried oil and gas pipelines, facilitating the construction of electromagnetic interference simulation models. Through topology information, the relative positions and connection methods between cable lines and buried oil and gas pipelines can be clearly defined, thereby more accurately assessing the electromagnetic coupling between them.

[0041] Optionally, the cross-laying area can refer to the area where the cable line and the buried oil and gas pipeline intersect in space. The cross-laying area is one of the areas with the strongest electromagnetic coupling. The size of the cross-laying area directly affects the degree of electromagnetic influence of the cable line on the buried oil and gas pipeline. A larger cross-laying area means stronger electromagnetic coupling and a higher risk of interference.

[0042] Alternatively, the topological information of cable lines and buried oil and gas pipelines can be obtained through a combination of on-site measurements and geographic information systems (GIS). For example, on-site measurements can be used to obtain the topological information, including precise measurements of key locations such as the starting points, ending points, branch points, and intersections of cable lines and buried oil and gas pipelines using high-precision measuring equipment such as total stations and positioning instruments, recording their geographic coordinates. Simultaneously, the GIS can be used to integrate and visualize this topological data, generating a detailed topological map. For calculating the area of ​​intersecting areas, the area calculation tool in the GIS can be used in conjunction with the measured boundary coordinates of the intersecting areas to accurately calculate the area. The data is accurate and directly reflects the actual on-site situation.

[0043] Alternatively, engineering design drawings and data can be used to obtain topology information and cross-laying areas. For example, engineering design drawings and related data for cable lines and buried oil and gas pipelines can be used to obtain topology information and cross-laying areas. During the engineering design phase, detailed drawings and data records can be retained, including information such as the laying paths, branch points, and intersection points of cable lines and buried oil and gas pipelines. By analyzing these design drawings and data, the topology of cable lines and buried oil and gas pipelines can be extracted. For the calculation of cross-laying areas, geometric calculation methods can be used based on the dimensions and shapes of the cross areas in the design drawings. Data acquisition is relatively easy and cost-effective.

[0044] This application's embodiments acquire the topology information and cross-laying area of ​​cable lines and buried oil and gas pipelines. The topology information provides the spatial layout and connection relationships of the cable lines and buried oil and gas pipelines, enabling the construction of an accurate electromagnetic interference simulation model. This allows for a more accurate simulation and evaluation of the electromagnetic coupling between the cable lines and buried oil and gas pipelines. The calculation of the cross-laying area further refines the electromagnetic interference assessment, as the cross-laying area represents the region with the strongest electromagnetic coupling; a larger cross-laying area implies stronger electromagnetic coupling and a higher risk of interference. Accurately acquiring the topology information and cross-laying area provides reliable data support for subsequent electromagnetic interference simulations and safety assessments, facilitating the safe operation of cable lines and buried oil and gas pipelines.

[0045] Step S103: Based on the inter-corrosion parameters, cross-laying area, resistivity of the anti-corrosion layer of the buried oil and gas pipeline, and the topology information corresponding to the cable line and the buried oil and gas pipeline respectively, an electromagnetic interference simulation model is generated. The electromagnetic interference simulation model is used to reflect the electromagnetic environment of the cable line and the buried oil and gas pipeline under different working conditions.

[0046] Alternatively, the resistivity of the anti-corrosion coating can refer to the resistivity of the anti-corrosion coating of buried oil and gas pipelines. The resistivity of the anti-corrosion coating can affect the potential distribution and current flow between the pipeline and the soil. A higher resistivity of the anti-corrosion coating will increase the induced voltage and current on the pipeline, thereby increasing the risk of electromagnetic interference.

[0047] Optionally, the electromagnetic interference simulation model can be a model constructed using computer simulation technology to simulate the electromagnetic interaction between cable lines and buried oil and gas pipelines. This model comprehensively considers factors such as the mutual correlation parameters, cross-laying area, resistivity of the anti-corrosion layer, and topological information of the cable lines and buried oil and gas pipelines, and can reflect the electromagnetic environment of both cable lines and buried oil and gas pipelines under different operating conditions.

[0048] By utilizing cross-correlation parameters, cross-laying area, the resistivity of the corrosion protection layer of buried oil and gas pipelines, and the topological information corresponding to both cable lines and buried oil and gas pipelines, the electromagnetic interference (EMI) simulation model can accurately simulate the electromagnetic impact of cable lines on buried oil and gas pipelines under various conditions, including normal operation, short-circuit faults, and lightning strikes. Cross-correlation parameters and cross-laying area directly affect the strength of electromagnetic coupling, while the resistivity of the corrosion protection layer affects the induced voltage and current on the pipeline. Topological information provides the spatial layout of the cable lines and buried oil and gas pipelines, enabling the model to more accurately simulate the distribution of the electromagnetic field. This EMI simulation model facilitates the prediction and evaluation of the degree of EMI caused by cable lines to buried oil and gas pipelines.

[0049] Step S104: Determine the electromagnetic influence parameters of the cable line on the buried oil and gas pipeline under different operating conditions based on the electromagnetic interference simulation model. The electromagnetic influence parameters include electromagnetic contact voltage and induced electromotive force.

[0050] Optionally, electromagnetic contact voltage can refer to the voltage that may be generated when a human body comes into contact with a buried oil and gas pipeline under the influence of electromagnetic interference. Induced electromotive force can refer to the electromotive force generated in a buried oil and gas pipeline due to electromagnetic induction. Electromagnetic contact voltage and induced electromotive force can be used to measure the electromagnetic influence of cable lines on buried oil and gas pipelines.

[0051] By determining the electromagnetic contact voltage and induced electromotive force through electromagnetic interference simulation models, the electromagnetic impact of cable lines on buried oil and gas pipelines under different operating conditions such as normal operation, short circuit faults, and lightning strikes can be effectively assessed. This helps engineering technicians predict and assess potential electromagnetic interference risks in advance, thereby taking corresponding protective measures to ensure the safe operation of buried oil and gas pipelines, avoid safety accidents caused by electromagnetic interference, and protect the safety of personnel and equipment.

[0052] Step S105: Determine the interference current and interference voltage information of the cable line to the buried oil and gas pipeline based on the electromagnetic influence parameters.

[0053] Optionally, the interference current information can be calculated by considering factors such as the capacitance of the pipeline, the contact resistance between the pipeline and the soil, and the induced electromotive force, while the interference voltage information is determined by combining the pipeline resistance, electromagnetic contact voltage, and interference current information. This can quantify the degree of electromagnetic interference of the cable line to the buried oil and gas pipeline, and facilitate the assessment and control of the impact of electromagnetic interference on the safe operation of the pipeline.

[0054] Optionally, based on precise modeling and simulation analysis using measured data, this embodiment of the application can first obtain the soil resistivity of the area where the cable line and the buried oil and gas pipeline are located through on-site measurement. This includes separately measuring the soil resistivity of the areas where the cable line and the buried oil and gas pipeline are located, determining the area of ​​each area according to the laying path, and then calculating a weighted average to obtain the target soil resistivity. Simultaneously, the proximity distance and parallel length between the cable line and the buried oil and gas pipeline, as well as the area of ​​their intersection, are measured. Then, the topological information of the cable line and the buried oil and gas pipeline is collected, including the route and branch points. Based on this interrelation parameters and topological information, combined with the resistivity of the anti-corrosion layer of the buried oil and gas pipeline, an electromagnetic interference simulation model can be constructed using electromagnetic simulation software or integrated engineering simulation software. Different operating conditions such as normal operation, short-circuit fault, and lightning strike are set in the model, and the electromagnetic contact voltage and induced electromotive force of the cable line to the buried oil and gas pipeline are obtained through simulation calculation. Finally, based on electromagnetic influence parameters such as electromagnetic contact voltage and induced electromotive force, combined with parameters such as pipeline capacitance, resistance, and contact resistance, interference current and interference voltage information are calculated, which facilitates a comprehensive assessment of the electromagnetic interference impact of cable lines on buried oil and gas pipelines.

[0055] Optionally, comprehensive modeling and simulation analysis based on multiple soil types can be used. When the area where the cable line and the buried oil and gas pipeline are located contains multiple soil types, the soil resistivity of the area corresponding to each soil type is first measured. Based on the area and soil distribution of each region, the sensitivity of each soil type to electromagnetic interference and its resistivity weight are determined. The target soil resistivity is then calculated through weighted averaging. Next, the topology information and cross-laying area of ​​the cable line and the buried oil and gas pipeline are obtained. Using the topology information, cross-laying area, and anti-corrosion layer resistivity, an electromagnetic interference simulation model is constructed. Multiple operating conditions are set in the model, and simulation calculations determine the electromagnetic contact voltage and induced electromotive force of the cable line to the buried oil and gas pipeline under different operating conditions. Finally, based on the electromagnetic influence parameters, combined with parameters such as the pipeline's capacitance, resistance, and contact resistance, the interference current and interference voltage information are calculated, providing a basis for the safe operation of the buried oil and gas pipeline.

[0056] In one optional embodiment, obtaining the target soil resistivity of the area shared by the cable line and the buried oil and gas pipeline includes: The data simulation system first measures the soil resistivity of the area where the cable line is located and the soil resistivity of the area where the buried oil and gas pipeline is located, respectively, wherein the measurement points cover the entire laying path of both the cable line and the buried oil and gas pipeline. Then, based on the entire laying path of both the cable line and the buried oil and gas pipeline, the area of ​​the area where the cable line is located and the area of ​​the buried oil and gas pipeline are determined; and the resistivity weight corresponding to the cable line is determined based on the area of ​​the area where the cable line is located. Then, the resistivity weight corresponding to the buried oil and gas pipeline is determined based on the area of ​​the area where the buried oil and gas pipeline is located. Finally, based on the resistivity weights corresponding to the cable line and the buried oil and gas pipeline, a weighted average is calculated to obtain the target soil resistivity.

[0057] Optionally, soil resistivity can refer to the degree to which soil impedes electric current, which can affect electromagnetic interference between cable lines and buried oil and gas pipelines. The data simulation system measures the soil resistivity in both areas by setting up measurement points along the entire laying path of the cable lines and buried oil and gas pipelines, in order to obtain accurate soil characteristic data.

[0058] Optionally, the resistivity weight can be calculated based on the area of ​​the respective regions where the cable lines and buried oil and gas pipelines are located, reflecting the relative importance of the soil resistivity of each area in the overall calculation. By using a weighted average calculation, the soil resistivity of the areas where the cable lines and buried oil and gas pipelines are located is combined to obtain the target soil resistivity, which can more accurately reflect the soil characteristics of the area where both are located.

[0059] This application's embodiments improve the accuracy of electromagnetic interference simulation models by separately measuring the soil resistivity in the areas where cable lines and buried oil and gas pipelines are located, determining resistivity weights based on the area of ​​each region, and finally calculating the target soil resistivity. Accurate target soil resistivity helps to more realistically simulate the electromagnetic interaction between cable lines and buried oil and gas pipelines, thereby more reliably assessing the impact of electromagnetic interference. It not only considers the spatial distribution differences of soil resistivity but also ensures the scientific validity and practicality of the calculation results through weight allocation.

[0060] Optionally, when the area where both the cable line and the buried oil and gas pipeline are located has a single soil type, the data simulation system first evenly distributes measurement points along the entire laying path of both the cable line and the buried oil and gas pipeline, measuring the soil resistivity of the two areas separately. Next, based on the geographical information of the laying path, the area of ​​each area is calculated. Then, based on this area, the resistivity weights corresponding to the cable line and the buried oil and gas pipeline are determined. The weights can be determined by the ratio of the area to the total area. Finally, using the resistivity weights corresponding to the cable line and the buried oil and gas pipeline, a weighted average of the soil resistivity in the two areas is calculated to obtain the target soil resistivity. This method is suitable for areas with relatively uniform soil types, enabling rapid and accurate acquisition of the target soil resistivity and improving work efficiency.

[0061] Optionally, when the area where cable lines and buried oil and gas pipelines coexist contains multiple soil types, the data simulation system first measures the soil resistivity of the area corresponding to each soil type. Measurement points need to cover the entire laying path for each soil type to ensure data comprehensiveness. Then, based on the area corresponding to each soil type and the distribution of soil within the shared area, the sensitivity of each soil type to electromagnetic interference is determined. Based on sensitivity and distribution density, the resistivity weight corresponding to each soil type is calculated. Finally, using the resistivity weight corresponding to each soil type, a weighted average of the soil resistivity for different soil types is calculated to obtain the target soil resistivity. This method is suitable for areas with complex soil types. The weighted average calculation, which comprehensively considers soil type and distribution, improves data accuracy and more accurately reflects the soil characteristics within the area, thereby improving the accuracy of the electromagnetic interference simulation model.

[0062] In one optional embodiment, obtaining the target soil resistivity of the area where the cable line and the buried oil and gas pipeline are located includes: when it is detected that the area where the cable line and the buried oil and gas pipeline are located includes K types of soil, the data simulation system can measure the soil resistivity of the area corresponding to each soil type to obtain K types of soil resistivity, where K is an integer greater than 1; and based on the area corresponding to each soil type and the distribution of the K types of soil in the area where they are located, the K types of soil resistivity are integrated into the target soil resistivity.

[0063] Optionally, the K soil types can refer to the different types of soil present in the area where the cable line and the buried oil and gas pipeline are located. Each soil type has different physical and chemical properties, resulting in different soil resistivity. The K soil types may differ in resistivity, particle size, moisture content, etc.

[0064] Optionally, the area corresponding to each soil type can refer to the specific area occupied by each soil type in the common area, which can be determined by a geographic information system or other surveying techniques. The distribution can refer to the spatial distribution characteristics of the K soil types in the common area, including the continuity of soil type distribution and the relative positional relationship between each soil type and cable lines and buried oil and gas pipelines, to facilitate accurate assessment of the impact of soil on electromagnetic interference.

[0065] This application embodiment measures the soil resistivity of the area corresponding to each soil type, and integrates K types of soil resistivity into a target soil resistivity based on the area and distribution of each soil type. This can more accurately reflect the soil characteristics of the area where cable lines and buried oil and gas pipelines are located, taking into account the diversity of soil types and the complexity of spatial distribution, and avoiding the errors that may be caused by a single soil resistivity value. An accurate target soil resistivity facilitates the establishment of a precise electromagnetic interference simulation model, improving the simulation accuracy of the model and thus more reliably assessing the electromagnetic interference impact of cable lines on buried oil and gas pipelines.

[0066] Optionally, a weighted average calculation based on the proportion of area can be used. For example, if the area where cable lines and buried oil and gas pipelines are located contains K types of soil, the soil resistivity of the area corresponding to each soil type is first measured to obtain K different soil resistivity values. Next, the area corresponding to each soil type is determined using a geographic information system or other surveying techniques. Then, a weight is assigned to each soil resistivity based on the proportion of the area occupied by each soil type to the total area of ​​the shared area. Finally, the K soil resistivity values ​​are integrated into a target soil resistivity through weighted average calculation. This method is suitable for areas with relatively uniform soil type distribution and clear boundaries, and can quickly and accurately calculate the target soil resistivity, providing basic data for subsequent electromagnetic interference simulation.

[0067] Optionally, a weighted calculation based on soil sensitivity and distribution density can be used. For example, in a shared area containing K soil types along with cable lines and buried oil and gas pipelines, the soil resistivity of the area corresponding to each soil type is first measured to obtain K soil resistivity values. Then, the distribution of each soil type within the shared area is analyzed, including the continuity of soil type distribution and its relative position to the cable lines and buried oil and gas pipelines. Based on this distribution, the sensitivity of each soil type to electromagnetic interference is assessed. Simultaneously, the distribution density of each soil type within a pre-defined area around the cable lines or buried oil and gas pipelines is considered to determine the resistivity weight corresponding to each soil type. Finally, a weighted average of the K soil resistivity values ​​is calculated using the resistivity weights corresponding to each soil type to obtain the target soil resistivity. This method is suitable for areas with complex soil type distributions and varying sensitivities to electromagnetic interference, and can more accurately reflect the impact of soil characteristics on electromagnetic interference, improving the accuracy of electromagnetic interference simulation models.

[0068] In one optional embodiment, the K soil resistivity types are integrated into a target soil resistivity based on the area corresponding to each soil type and the distribution of the K soil types within a common area. This includes: a data simulation system determining the sensitivity of each soil type to electromagnetic interference based on the area corresponding to each soil type and the distribution of the K soil types. The distribution of the K soil types includes the continuity of their distribution and their relative positional relationship with cable lines and buried oil and gas pipelines. Then, based on the sensitivity of each soil type to electromagnetic interference and the distribution density of each soil type within a preset area surrounding the cable line or buried oil and gas pipeline, a resistivity weight corresponding to each soil type is determined. Finally, based on the resistivity weights corresponding to each soil type, a weighted average of the K soil resistivity types is calculated to obtain the target soil resistivity.

[0069] Optionally, electromagnetic interference (EMI) sensitivity can refer to the degree of response of a certain soil type to EMI, influenced by factors such as soil resistivity, distribution continuity, and relative location to cable lines and buried oil and gas pipelines. Soil types with lower resistivity are generally more sensitive to EMI because low-resistivity soils conduct current more easily, thus enhancing the effect of EMI. The resistivity weight is determined based on the soil type's EMI sensitivity and its distribution density within a predetermined area around the cable line or buried oil and gas pipeline, used to reflect the importance of each soil type in the weighted average calculation. Soil types with higher distribution density play a greater role in EMI, and therefore have a higher resistivity weight.

[0070] This application embodiment accurately determines the sensitivity of each soil type to electromagnetic interference by comprehensively considering the area, distribution continuity, relative positional relationship with cable lines and buried oil and gas pipelines, and distribution density within a preset area, and calculates the corresponding resistivity weight accordingly. Finally, by using the resistivity weight corresponding to each soil type, a weighted average of the resistivity of different soil types is calculated. The resulting target soil resistivity more accurately reflects the soil characteristics of the area where cable lines and buried oil and gas pipelines are located, improving the accuracy of the electromagnetic interference simulation model. This makes the assessment of the electromagnetic interference impact of cable lines on buried oil and gas pipelines under different operating conditions more scientific and reliable, facilitating engineering design and safety assessment, and helping to take effective protective measures to ensure the safe operation of buried oil and gas pipelines.

[0071] Optionally, precise analysis can be based on a Geographic Information System (GIS). For example, the data simulation system first uses GIS technology to conduct detailed geographic mapping of the area shared by cable lines and buried oil and gas pipelines, determining the area and distribution of each soil type. Through GIS analysis, the distribution continuity of each soil type and its relative position to the cable lines and buried oil and gas pipelines can be accurately assessed to calculate the sensitivity of each soil type to electromagnetic interference. Next, combining the distribution density of each soil type within a preset area around the cable lines or buried oil and gas pipelines, the resistivity weight corresponding to each soil type is determined. Finally, using these weights, a weighted average of the resistivity of K soil types is calculated to obtain the target soil resistivity. This method is suitable for areas with complex soil type distributions and requiring high-precision measurements, providing detailed soil distribution information and thus improving the accuracy of the target soil resistivity calculation.

[0072] Optionally, a comprehensive assessment can be conducted based on field sampling and statistical analysis. For example, field sampling can be carried out in areas where cables and buried oil and gas pipelines coexist, measuring the soil resistivity of the corresponding areas for each soil type. Through field surveys and sampling, the distribution continuity of each soil type and its relative positional relationship with cables and buried oil and gas pipelines can be assessed. Based on this field data, the sensitivity of each soil type to electromagnetic interference can be determined. Then, combining the distribution density of each soil type in a pre-defined area around the cables or buried oil and gas pipelines, the resistivity weight corresponding to each soil type can be determined through statistical analysis. Finally, the resistivity of K soil types is calculated by weighting the resistivity weights corresponding to each soil type to obtain the target soil resistivity. This method is suitable for areas with complex field conditions that require comprehensive assessment. Through field sampling and statistical analysis, it can effectively reflect the actual distribution of soil types and their sensitivity to electromagnetic interference, thereby improving the reliability of the target soil resistivity calculation.

[0073] In one optional embodiment, the sensitivity of each soil type to electromagnetic interference is positively correlated with the resistivity weight corresponding to that soil type, and the distribution density of each soil type in a preset area around the cable line or buried oil and gas pipeline is positively correlated with the resistivity weight corresponding to that soil type.

[0074] In this application embodiment, the sensitivity of each soil type to electromagnetic interference is positively correlated with the resistivity weight corresponding to that soil type, meaning that the higher the sensitivity of the soil type, the greater its weight in calculating the target soil resistivity. Similarly, the distribution density of each soil type within a preset area around the cable line or buried oil and gas pipeline is also positively correlated with the resistivity weight corresponding to that soil type, indicating that the higher the distribution density of the soil type, the greater its resistivity weight. This ensures that the actual impact of different soil types on electromagnetic interference can be more accurately reflected when calculating the target soil resistivity, thereby improving the accuracy and reliability of the electromagnetic interference simulation model and facilitating the assessment of the electromagnetic interference impact of cable lines on buried oil and gas pipelines.

[0075] In one optional embodiment, an electromagnetic interference (EMI) simulation model is generated based on cross-correlation parameters, the cross-laying area, the resistivity of the anti-corrosion layer of the buried oil and gas pipeline, and the topological information corresponding to the cable line and the buried oil and gas pipeline, respectively. This includes: the data simulation system generating a pipeline model based on the cross-laying area, the resistivity of the anti-corrosion layer of the buried oil and gas pipeline, and the topological information corresponding to the cable line and the buried oil and gas pipeline, respectively. The pipeline model reflects the current distribution information of each conductor in the cable line and the buried oil and gas pipeline, the self-impedance information of each conductor and the circuit of arbitrary shape, the mutual impedance information, and the capacitance information. Then, an equivalent soil structure model is generated based on the cross-correlation parameters. This equivalent soil structure model reflects the magnetic field information in the air and soil, the electric field information in the air and soil, and the potential information of the conductors and soil in the area shared by the cable line and the buried oil and gas pipeline. Finally, the pipeline model and the equivalent soil structure model can be coupled to generate an EMI simulation model.

[0076] Optionally, the pipeline model can be a mathematical model used to simulate the electromagnetic characteristics of individual conductors in cable lines and buried oil and gas pipelines, such as current distribution, self-impedance, mutual impedance, and capacitance. The soil structure equivalent model is used to simulate the electromagnetic field distribution in the soil and air of the area shared by the cable lines and buried oil and gas pipelines, including magnetic fields, electric fields, and potential information of the conductors and soil. The electromagnetic interference simulation model generated by coupling these two models—the pipeline model and the soil structure equivalent model—can comprehensively reflect the electromagnetic interaction between the cable lines and buried oil and gas pipelines.

[0077] This application's embodiments generate pipeline models and equivalent soil structure models, and couple these models to create an electromagnetic interference (EMI) simulation model. This model can accurately simulate the electromagnetic interaction between cable lines and buried oil and gas pipelines. The pipeline model provides the current distribution and electromagnetic characteristics within the cable and pipe, while the equivalent soil structure model considers the influence of the external environment on the electromagnetic field. This allows for a more accurate prediction of the EMI caused by cable lines to buried oil and gas pipelines under different operating conditions, including key parameters such as induced electromotive force and electromagnetic contact voltage. This helps assess potential EMI risks, ensuring the safe operation of buried oil and gas pipelines and the safety of maintenance personnel.

[0078] Optionally, modeling and coupling can be based on electromagnetic simulation software. For example, firstly, using relevant modules in the electromagnetic simulation software, a detailed pipeline model can be constructed based on the intersection area of ​​the cable line and the buried oil and gas pipeline, the resistivity of the anti-corrosion layer, and their respective topological information. In the pipeline model, the geometric parameters, material properties, and connection relationships of each conductor are accurately input to ensure that the model accurately reflects current distribution, self-impedance, mutual impedance, and capacitance information. Next, based on the interrelation parameters of the cable line and the buried oil and gas pipeline, such as soil resistivity, proximity distance, and parallel length, an equivalent soil structure model is generated. This equivalent soil structure model can simulate the electromagnetic field distribution in the air and soil, including magnetic field, electric field, and potential information. Finally, the pipeline model and the equivalent soil structure model are coupled in the simulation software to generate an electromagnetic interference simulation model. By setting different operating conditions, such as normal operation and short-circuit faults, simulation calculations are performed to evaluate the electromagnetic interference impact of the cable line on the buried oil and gas pipeline.

[0079] Optionally, numerical simulation and coupling can be performed based on the finite element method. For example, a finite element method can be used for numerical simulation. First, based on the intersection area of ​​the cable line and the buried oil and gas pipeline, the resistivity of the anti-corrosion layer, and topological information, a pipeline model is established using finite element analysis software. In the model, through mesh generation and material property assignment, the current distribution, self-impedance, mutual impedance, and capacitance information of each conductor are accurately simulated. Then, based on the cross-correlation parameters, an equivalent soil structure model is constructed. This equivalent soil structure model simulates the electromagnetic field distribution in air and soil, including magnetic field, electric field, and potential information, by defining the electromagnetic properties of the soil, such as resistivity and dielectric constant. Finally, the pipeline model and the equivalent soil structure model are coupled in the finite element analysis software to form an electromagnetic interference simulation model. By applying different boundary conditions and excitation sources, numerical simulation is performed to analyze the electromagnetic interference impact of the cable line on the buried oil and gas pipeline under different operating conditions. This model is suitable for simulating complex geometries and non-uniform media and can provide high-precision simulation results.

[0080] In one optional embodiment, the electromagnetic influence parameters of the cable line on the buried oil and gas pipeline under different operating conditions are determined according to the electromagnetic interference simulation model. This includes: the data simulation system can set N kinds of constraints for the electromagnetic interference simulation model, wherein each constraint is used to simulate an operating condition scenario of the interaction between the cable line and the buried oil and gas pipeline; then, the electromagnetic interference simulation model is controlled to perform simulation operations under each constraint condition, and the electromagnetic influence parameters of the cable line on the buried oil and gas pipeline under the corresponding operating condition are obtained from the simulation operation results.

[0081] Optionally, constraints can refer to specific operating scenarios set in the electromagnetic interference simulation model to simulate the interaction between cable lines and buried oil and gas pipelines under different operating conditions. The N constraints can include normal operation of the cable line, short-circuit faults, lightning strikes, and changes in the corrosion resistance of the buried oil and gas pipeline's anti-corrosion layer and grounding transformations. Each constraint corresponds to a specific operating scenario. By setting N constraints in the simulation model, the electromagnetic influence of the cable line on the buried oil and gas pipeline under different operating conditions can be simulated. Electromagnetic influence parameters can refer to specific quantitative indicators of the electromagnetic interference of the cable line on the buried oil and gas pipeline obtained from the simulation results, such as electromagnetic contact voltage and induced electromotive force, which can reflect the degree of electromagnetic interference of the cable line on the buried oil and gas pipeline under different operating conditions.

[0082] The data simulation system of this application embodiment sets various constraints on the electromagnetic interference simulation model and performs simulation operations under each constraint. This allows for a comprehensive evaluation of the electromagnetic interference impact of cable lines on buried oil and gas pipelines under different operating conditions. It can simulate electromagnetic interference in various scenarios, including normal operation, short-circuit faults, and lightning strikes, thus providing comprehensive reference data for engineering design and safety assessment. Precise electromagnetic influence parameters enable more accurate assessment of potential electromagnetic interference risks, allowing for the development of effective protective measures to ensure the safe operation of buried oil and gas pipelines and protect the personal safety of maintenance personnel.

[0083] Optionally, multi-condition simulations can be performed using electromagnetic simulation software. For example, a data simulation system can utilize electromagnetic simulation software to construct an electromagnetic interference simulation model. First, a model is established based on detailed parameters such as the topology of the cable lines and buried oil and gas pipelines, and soil resistivity. Then, various constraints are set in the simulation software, each corresponding to a specific operating scenario, such as normal operation, short-circuit fault, and lightning strike. By adjusting parameters and boundary conditions in the simulation software, the electromagnetic interference simulation model is controlled to perform simulation operations under each constraint condition. Electromagnetic influence parameters, such as electromagnetic contact voltage and induced electromotive force, are extracted from the simulation results to evaluate the electromagnetic interference impact of cable lines on buried oil and gas pipelines under different operating conditions. This provides high-precision simulation results and allows for flexible adjustment and optimization of model parameters.

[0084] Optionally, multi-condition simulations can be performed based on custom scripts and automated tools. For example, a data simulation system controls the operation of an electromagnetic interference simulation model by writing custom scripts and using automated tools. First, various constraints are set in the simulation model using custom scripts, each corresponding to a specific operating condition. Then, the scripts automatically control the simulation model to perform simulation operations under each constraint. The scripts can automatically adjust model parameters, run simulations, and extract electromagnetic influence parameters from the simulation results. This is suitable for scenarios requiring numerous repetitive runs and parameter adjustments, improving simulation efficiency and reducing human error. Automated tools can quickly generate and analyze a large number of simulation results.

[0085] In one optional embodiment, the N constraints include at least one constraint: a first constraint for simulating the interaction between the cable line and the buried oil and gas pipeline when transmitting normal operating current; a second constraint for simulating the interaction between the cable line and the buried oil and gas pipeline when a short-circuit current occurs; a third constraint for simulating the interaction between the cable line and the buried oil and gas pipeline when a lightning strike occurs; and a fourth constraint for simulating the changes in the corrosion protection layer resistance and grounding transformation of the buried oil and gas pipeline.

[0086] Optionally, the first constraint can be used to simulate the operating condition of the cable line when transmitting normal operating current, where the current is the rated operating current of the cable line, reflecting the electromagnetic influence of the cable line under normal operating conditions. The second constraint can be used to simulate the operating condition of the cable line when a short-circuit current occurs, which is much larger than the normal operating current and generates stronger electromagnetic interference. The third constraint can be used to simulate the operating condition of the cable line when struck by lightning, where lightning generates transient high voltage and large current, producing a strong electromagnetic pulse to the surrounding environment. The fourth constraint can be used to simulate the changes in the corrosion protection layer resistance and grounding transformation of buried oil and gas pipelines. Changes in corrosion protection layer resistance may affect the pipeline's shielding effect against electromagnetic interference, while grounding transformation may change the current distribution and flow direction. The setting of multiple constraints allows the simulation model to cover various typical scenarios of interaction between cable lines and buried oil and gas pipelines.

[0087] This application's embodiments, by setting various specific constraints, enable the data simulation system to comprehensively evaluate the electromagnetic interference impact of cable lines on buried oil and gas pipelines under different extreme and normal operating conditions. For example, the first constraint helps assess the long-term impact of cable lines on buried oil and gas pipelines during normal operation; the second constraint is used to assess the high electromagnetic interference risk that may occur during short-circuit faults; the third constraint simulates transient electromagnetic interference under lightning strike conditions, facilitating the evaluation of pipeline lightning protection measures; and the fourth constraint considers the impact of changes in the pipeline's own characteristics on electromagnetic interference, helping to optimize the pipeline's protection design. This detailed operating condition simulation provides a comprehensive reference for engineering design, helps to formulate effective protection measures, facilitates the safe operation of buried oil and gas pipelines, and protects the personal safety of maintenance personnel.

[0088] In one optional embodiment, determining the induced electromotive force (EMF) of the cable line on the buried oil and gas pipeline under different operating conditions based on an electromagnetic interference simulation model includes: the data simulation system can determine the magnetic induction intensity and the area defined by the closed loop of the cable line on the buried oil and gas pipeline under different operating conditions based on the electromagnetic interference simulation model; then, the loop magnetic flux is determined based on the magnetic induction intensity and the area defined by the closed loop; and the magnetic vector potential of the target point on the buried oil and gas pipeline is determined based on the loop magnetic flux, wherein the direction of the magnetic vector potential is consistent with the current direction in the cable line; finally, the induced EMF is determined based on the boundary length of the magnetic vector potential and the closed loop.

[0089] Optionally, magnetic flux density can refer to the strength of a magnetic field at a certain point; it is a vector representing the magnitude and direction of the magnetic field. In electromagnetic interference simulation models, magnetic flux density can be calculated by simulating the current distribution of cable lines under different operating conditions.

[0090] Alternatively, the area defined by the closed loop can refer to the area enclosed by the closed loop formed by cable lines and buried oil and gas pipelines. Loop flux can refer to the integral of the magnetic induction intensity passing through the closed loop, reflecting the total amount of magnetic field passing through the closed loop.

[0091] Optionally, the magnetic vector potential can be an auxiliary vector used to describe the distribution of the magnetic field, with its direction aligned with the current direction. In electromagnetic induction, the rate of change of the magnetic vector potential is proportional to the induced electromotive force (EMF). The induced EMF can refer to the electromotive force generated in a closed loop due to a change in the magnetic field.

[0092] The data simulation system of this application calculates the magnetic induction intensity of the cable line on the buried oil and gas pipeline and the area defined by the closed loop under different operating conditions using an electromagnetic interference simulation model, thereby determining the loop magnetic flux. Based on the loop magnetic flux, the data simulation system can calculate the magnetic vector potential of the target point on the buried oil and gas pipeline, the direction of which is consistent with the current direction in the cable line. Finally, by using the magnetic vector potential and the boundary length of the closed loop, the induced electromotive force is determined, enabling accurate assessment of the electromagnetic interference impact of the cable line on the buried oil and gas pipeline under different operating conditions. This facilitates ensuring the safe operation of the buried oil and gas pipeline, effectively predicting and controlling electromagnetic interference, and reducing potential safety risks.

[0093] Optionally, embodiments of this application can be performed using professional electromagnetic simulation software for detailed simulation, or using custom scripts and automated tools for automated simulation. For example, the simulation software can calculate the magnetic induction intensity and the area defined by the closed loop of the cable line on the buried oil and gas pipeline under different conditions. Then, using the built-in electromagnetic field analysis tool of the software, the loop magnetic flux is calculated based on the magnetic induction intensity and the area of ​​the closed loop. Then, using the concept of magnetic vector potential in electromagnetic theory, the magnetic vector potential of the target point on the buried oil and gas pipeline is determined, and its direction is consistent with the current direction in the cable line. Finally, based on the magnetic vector potential and the boundary length of the closed loop, the induced electromotive force is calculated, which can provide high-precision simulation results and allows for flexible adjustment and optimization of model parameters, suitable for scenarios requiring detailed analysis and high-precision results. Alternatively, different operating conditions, such as normal operation, short-circuit fault, and lightning strike, can be set in the simulation model using custom scripts. Then, the electromagnetic simulation library or tools can be called through the scripts to calculate the magnetic induction intensity and the area defined by the closed loop of the cable line on the buried oil and gas pipeline under different operating conditions. Next, the script calculates the loop flux based on the magnetic induction intensity and the closed loop area. Then, using the concept of magnetic vector potential from electromagnetic theory, the script calculates the magnetic vector potential at the target point on the buried oil and gas pipeline, with its direction consistent with the current direction in the cable line. Finally, the script calculates the induced electromotive force based on the magnetic vector potential and the boundary length of the closed loop. This approach is suitable for scenarios requiring numerous repetitive runs and parameter adjustments, improving simulation efficiency and reducing human error. Through automation tools, a large number of simulation results can be quickly generated and analyzed.

[0094] In one optional embodiment, determining the electromagnetic contact voltage of the cable line to the buried oil and gas pipeline under different operating conditions based on an electromagnetic interference simulation model includes: acquiring the real and imaginary parts of a magnetic vector potential, wherein the real part of the magnetic vector potential is used to represent the component of the magnetic vector potential vector in the real space, and the imaginary part of the magnetic vector potential is used to represent the component of the magnetic vector potential vector in the imaginary space; detecting the magnetic vector component along a first direction and the magnetic vector component along a second direction in the path corresponding to the magnetic vector potential, wherein the first direction and the second direction are parallel to each other, and the starting point of the first direction is the top end point of the buried oil and gas pipeline, the ending point of the first direction is the top end point of the cable line, the starting point of the second direction is the bottom end point of the cable line, and the ending point of the second direction is the bottom end point of the buried oil and gas pipeline; and determining the electromagnetic contact voltage based on the magnetic vector component along the first direction, the magnetic vector component along the second direction, and the real and imaginary parts of the magnetic vector potential in the path corresponding to the magnetic vector potential.

[0095] Optionally, the magnetic vector potential is a complex vector used to describe the distribution of the magnetic field, including a real part and an imaginary part. The real part represents the component of the magnetic vector potential in real space, reflecting the actual distribution of the magnetic field; the imaginary part represents the component of the magnetic vector potential in imaginary space, which is related to the phase information of the magnetic field. When calculating the electromagnetic contact voltage, both the real and imaginary parts of the magnetic vector potential need to be considered, as they together determine the complete characteristics of the magnetic field.

[0096] Optionally, the first direction and the second direction are two parallel directions, pointing from the top end of the buried oil and gas pipeline to the top end of the cable line, and from the bottom end of the cable line to the bottom end of the buried oil and gas pipeline, respectively. The magnetic vector components of the first and second directions are used to assess the distribution of the magnetic field along a specific path, thereby calculating the electromagnetic contact voltage.

[0097] This application embodiment, by acquiring the real and imaginary parts of the magnetic vector potential and detecting the magnetic vector components along the first and second directions, can accurately calculate the electromagnetic contact voltage. It considers the distribution of the magnetic field in different directions and the phase information of the magnetic field, thereby enabling a more accurate assessment of the electromagnetic interference impact of cable lines on buried oil and gas pipelines. Electromagnetic contact voltage facilitates the assessment of electromagnetic interference safety. Accurate calculation of the electromagnetic contact voltage helps ensure the safe operation of buried oil and gas pipelines in electromagnetic environments, avoids safety accidents caused by electromagnetic interference, and helps in developing effective protective measures to ensure the safe operation of buried oil and gas pipelines.

[0098] Optionally, the electromagnetic contact voltage of the cable line to the buried oil and gas pipeline under different operating conditions in the embodiments of this application can be calculated in detail based on electromagnetic simulation software, or it can be calculated automatically based on custom scripts and automation tools.

[0099] Specifically, the calculation of the loop flux can be referenced in formula (1):

[0100] Formula (1)

[0101] in, For loop flux; It represents the magnetic flux density; The area defined by a closed loop.

[0102] The law of electromagnetic induction can be found in formula (2):

[0103] Formula (2)

[0104] Combining formulas (1) and (2), and introducing the magnetic vector potential A, we can obtain formula (3) using Stokes' theorem:

[0105] Formula (3)

[0106] Where E represents induced electromotive force, which is the electromotive force generated in a closed loop due to the change of magnetic field. It is the magnetic vector potential of a point on the pipeline, and its direction is consistent with the direction of the current in the cable; This is the boundary of a closed loop. The induced electromotive force E is equal to the rate of change of the magnetic vector potential A with time within the closed loop. Line integrals on the line.

[0107] Based on the location model of buried cables and pipelines, the induced electromotive force of urban power cables to buried oil and gas metal pipelines can be calculated using formula (3).

[0108] The electromagnetic contact voltage per unit length of metal pipe can be calculated using formula (4):

[0109] Formula (4)

[0110] Where U can be the electromagnetic contact voltage per unit length of the metal pipe. Angular frequency, equal to , For frequency; and These represent the z-components of the magnetic vector potential at two different positions or states. Represents the real part of the magnetic vector; The imaginary part represents the magnetic vector position.

[0111] In one optional embodiment, the interference current and interference voltage information of the cable line to the buried oil and gas pipeline are determined based on electromagnetic influence parameters, including: the data simulation system can determine the interference current information based on the capacitance of the buried oil and gas pipeline, the contact resistance between the buried oil and gas pipeline and the soil, and the induced electromotive force; and then determine the interference voltage information based on the resistance of the buried oil and gas pipeline, the electromagnetic contact voltage, and the interference current information.

[0112] Optionally, the capacitance of a buried oil and gas pipeline can refer to the capacitive characteristics between the pipeline and the surrounding medium such as soil, reflecting the pipeline's charge storage capacity in an electromagnetic field. The contact resistance between the buried oil and gas pipeline and the soil can refer to the resistance between the pipeline surface and the soil, affecting the efficiency of current transmission between the pipeline and the soil.

[0113] Optionally, the induced electromotive force (EMF) can refer to the EMF generated in the pipe due to electromagnetic induction, and the interference current information can refer to the magnitude and distribution of the current generated in the pipe due to electromagnetic interference, which can be calculated using the pipe's capacitance, contact resistance, and induced EMF. The interference voltage information can refer to the magnitude and distribution of the voltage generated in the pipe due to electromagnetic interference, which can be calculated using the pipe's resistance, electromagnetic contact voltage, and interference current information.

[0114] The data simulation system of this application embodiment can determine the interference current information caused by electromagnetic interference by calculating the capacitance, contact resistance and induced electromotive force of buried oil and gas pipelines. Using the pipeline resistance, electromagnetic contact voltage and interference current information, the interference voltage information can be calculated. It can comprehensively evaluate the electromagnetic interference impact of cable lines on buried oil and gas pipelines under different operating conditions. By accurately calculating the interference current and interference voltage, electromagnetic interference can be effectively predicted and controlled, reducing potential safety risks and facilitating the safe operation of buried oil and gas pipelines.

[0115] Referring to Figure 2, which illustrates a process for determining interference information of cable lines to buried oil and gas pipelines. First, soil parameters and cable / pipeline parameters are determined. This may include obtaining the interrelation parameters between the cable line and the buried oil and gas pipeline, such as target soil resistivity, proximity distance, parallel length, topological information, and cross-laying area of ​​the cable line and the buried oil and gas pipeline. Next, an electromagnetic interference (EMI) simulation model is established based on these parameters. This model can simulate the electromagnetic environment of the cable line and the buried oil and gas pipeline under different operating conditions. Then, steady-state operation analysis is performed using the EMI simulation model to calculate parameters such as pipeline-to-ground voltage and AC leakage current density. These calculated parameters can be used to assess the impact of EMI on personal safety voltage, pipeline safety voltage, and AC corrosion. Finally, a comparative analysis of the safety distance and parameter impact simulation is conducted, considering factors such as different voltage levels, parallel lengths, soil resistivity, parallel spacing, and anti-corrosion layer types. Finally, the comprehensive analysis results are analyzed and summarized to determine the interference current and voltage information of the cable lines to buried oil and gas pipelines, thereby providing a basis for the safe laying of cables and pipelines. Through accurate simulation analysis, effective planning and protection references can be provided for engineering practice.

[0116] This application uses simulation analysis to study the electromagnetic interference problem of cable lines on buried oil and gas pipelines under normal operating conditions. It summarizes the influence patterns of cable lines on buried oil and gas pipelines under multiple sets of influencing parameters and explores the safe laying distance rules for both. This application can provide a certain reference for the advance planning and protection of pipelines affected by inductive coupling with cables in actual engineering projects. The conclusions are as follows:

[0117] The proximity distance and parallel length between buried oil and gas pipelines and cable lines are important factors affecting the electromagnetic contact voltage of buried oil and gas pipelines. As the proximity distance increases, the electromagnetic contact voltage on buried oil and gas pipelines decreases exponentially. When the parallel length of buried oil and gas pipelines is less than 4000m, the inductive coupling of the cable line to the buried oil and gas pipeline increases rapidly with the increase of the parallel length of the buried oil and gas pipeline and the buried oil and gas pipeline, and the electromagnetic contact voltage increases rapidly. However, after the parallel length reaches the saturation length, such as 4000m, the electromagnetic contact voltage increases in a fluctuating manner, and the safe distance fluctuates within the range of 50m-70m. When buried oil and gas pipelines are laid in intersections with cable lines, the impact is less than when they are laid in parallel. Therefore, it is necessary to plan the laying route of cable lines or buried oil and gas pipelines in advance before construction to avoid electromagnetic interference from harming buried oil and gas pipelines and personal safety.

[0118] For buried oil and gas pipelines, the resistivity of the anti-corrosion coating has a significant impact on the inductive coupling it experiences. The higher the resistivity of the coating, the greater the electromagnetic contact voltage on the buried oil and gas pipeline, and the greater the safe laying distance between the cable line and the buried oil and gas pipeline. Therefore, considering economic and practical factors, coating materials with low resistivity should be appropriately selected to reduce the electromagnetic contact voltage on the buried oil and gas pipeline, thereby reducing the safe laying distance, saving urban land resources, and alleviating the problem of land scarcity.

[0119] High-voltage cable lines have a large current-carrying capacity and therefore a greater electromagnetic impact on buried oil and gas pipelines. The electromagnetic contact voltage generated by high-voltage cables on these pipelines is higher than that of low-voltage cables. Therefore, the required safety distance between cable lines and buried oil and gas pipelines increases with the operating current. Under the conditions of this application, when the current shunting coefficient of the cable line is 0.1, a 1m safety distance can ensure that the electromagnetic contact voltage of parallel pipelines is below the standard of 33V. Vertically arranged cable lines have a greater impact on buried oil and gas pipelines than horizontally arranged or triangularly arranged cables. Triangularly arranged cables have the least electromagnetic impact on buried oil and gas pipelines sharing a corridor. When laying cables, to reduce electromagnetic impact on surrounding pipelines, a triangular arrangement should be used, and appropriate voltage levels and current-carrying capacities of cable lines should be selected, or certain protective measures should be taken.

[0120] Different soil resistivity significantly affects the electromagnetic contact voltage of buried oil and gas pipelines, which gradually decreases as soil resistivity increases. The safe laying distance between buried oil and gas pipelines and cable lines exhibits the same characteristic as soil resistivity increases. Therefore, before project implementation, the soil resistivity of the laying area must be measured to ensure that cable lines and buried oil and gas pipelines are laid within a safe distance.

[0121] Referring to Figure 3, according to another aspect of the embodiments of this application, an interference information determination device for cable lines to buried oil and gas pipelines is also provided, including: a first acquisition unit 301, a second acquisition unit 302, a model construction unit 303, a first determination unit 304, and a second determination unit 305.

[0122] The system comprises the following components: a first acquisition unit 301, used to acquire the interrelation parameters between the cable line and the buried oil and gas pipeline; the interrelation parameters include at least the target soil resistivity of the area where the cable line and the buried oil and gas pipeline are located, the proximity distance between the cable line and the buried oil and gas pipeline, and the parallel length; a second acquisition unit 302, used to acquire the topological information corresponding to the cable line and the buried oil and gas pipeline, as well as the cross-laying area between the buried oil and gas pipeline and the cable line; and a model building unit 303, used to construct a model based on the interrelation parameters, the cross-laying area, and the resistivity of the anti-corrosion layer of the buried oil and gas pipeline. The system generates an electromagnetic interference simulation model based on the topology information corresponding to the cable lines and buried oil and gas pipelines. The electromagnetic interference simulation model reflects the electromagnetic environment of the cable lines and buried oil and gas pipelines under different operating conditions. The first determining unit 304 is used to determine the electromagnetic influence parameters of the cable lines on the buried oil and gas pipelines under different operating conditions based on the electromagnetic interference simulation model. The electromagnetic influence parameters include electromagnetic contact voltage and induced electromotive force. The second determining unit 305 is used to determine the interference current information and interference voltage information of the cable lines on the buried oil and gas pipelines based on the electromagnetic influence parameters.

[0123] Optionally, the first acquisition unit 301 includes: a resistivity measurement subunit, used to measure the soil resistivity of the area where the cable line is located and the soil resistivity of the area where the buried oil and gas pipeline is located, wherein the soil resistivity measurement points cover the entire laying path of the cable line and the buried oil and gas pipeline; an area determination subunit, used to determine the area of ​​the area where the cable line is located and the area of ​​the area where the buried oil and gas pipeline is located based on the entire laying path of the cable line and the buried oil and gas pipeline; a first weight determination subunit, used to determine the resistivity weight corresponding to the cable line based on the area of ​​the area where the cable line is located; a second weight determination subunit, used to determine the resistivity weight corresponding to the buried oil and gas pipeline based on the area of ​​the area where the buried oil and gas pipeline is located; and a resistivity determination subunit, used to perform a weighted average calculation of the soil resistivity of the area where the cable line is located and the soil resistivity of the area where the buried oil and gas pipeline is located based on the resistivity weight corresponding to the cable line and the resistivity weight corresponding to the buried oil and gas pipeline, to obtain the target soil resistivity.

[0124] Optionally, the first acquisition unit 301 includes: a multi-resistivity acquisition subunit, used to measure the soil resistivity of the area corresponding to each soil type when it is detected that the common area of ​​the cable line and the buried oil and gas pipeline includes K types of soil, to obtain K types of soil resistivity, where K is an integer greater than 1; and a resistivity integration subunit, used to integrate the K types of soil resistivity into a target soil resistivity based on the area corresponding to each soil type and the distribution of the K types of soil in the common area.

[0125] Optionally, the resistivity integration subunit includes: a sensitivity determination module, used to determine the sensitivity of each soil type to electromagnetic interference based on the area corresponding to each soil type and the distribution of K soil types, wherein the distribution of K soil types includes the continuity of the distribution of K soil types and the relative positional relationship of each soil type with the cable line and the buried oil and gas pipeline; a soil resistivity weight determination module, used to determine the resistivity weight corresponding to each soil type based on the sensitivity of each soil type to electromagnetic interference and the distribution density of each soil type in a preset area around the cable line or buried oil and gas pipeline; and a target resistivity determination module, used to calculate the target soil resistivity by performing a weighted average calculation of the K soil resistivities based on the resistivity weight corresponding to each soil type.

[0126] Optionally, the model building unit 303 includes: a pipeline model generation subunit, used to generate a pipeline model based on the cross-laying area, the resistivity of the anti-corrosion layer of the buried oil and gas pipeline, and the topological information corresponding to the cable line and the buried oil and gas pipeline respectively. The pipeline model is used to reflect the current distribution information of each conductor in the cable line and the buried oil and gas pipeline, the self-impedance information of each conductor and the circuit of arbitrary shape, the mutual impedance information, and the capacitance information; an equivalent model generation subunit, used to generate a soil structure equivalent model based on the cross-correlation parameters. The soil structure equivalent model is used to reflect the magnetic field information in the air and soil, the electric field information in the air and soil, and the potential information of the conductor and soil in the area where the cable line and the buried oil and gas pipeline are located; and a simulation model generation subunit, used to couple the pipeline model and the soil structure equivalent model to generate an electromagnetic interference simulation model.

[0127] Optionally, the first determining unit 304 includes: a constraint setting subunit, used to set N kinds of constraint conditions for the electromagnetic interference simulation model, wherein each constraint condition is used to simulate a working condition scenario of the interaction between the cable line and the buried oil and gas pipeline; and an influence parameter determining subunit, used to control the electromagnetic interference simulation model to perform simulation operations under each constraint condition, and obtain the electromagnetic influence parameters of the cable line on the buried oil and gas pipeline when it is running under the working condition corresponding to the constraint condition from the simulation operation results.

[0128] Optionally, the constraint setting subunit includes: a first constraint module for setting a first constraint condition, which simulates the interaction between the cable line and the buried oil and gas pipeline when transmitting normal operating current; a second constraint module for setting a second constraint condition, which simulates the interaction between the cable line and the buried oil and gas pipeline when a short-circuit current occurs; a third constraint module for setting a third constraint condition, which simulates the interaction between the cable line and the buried oil and gas pipeline when a lightning strike occurs; and a fourth constraint module for setting a fourth constraint condition, which simulates the changes in the corrosion protection layer resistance and the grounding transformation of the buried oil and gas pipeline.

[0129] Optionally, the first determining unit 304 includes: a pipeline parameter determining subunit, used to determine the magnetic induction intensity and the area defined by the closed loop of the buried oil and gas pipeline under different operating conditions based on the electromagnetic interference simulation model; a loop magnetic flux determining subunit, used to determine the loop magnetic flux based on the magnetic induction intensity and the area defined by the closed loop; a target point determining subunit, used to determine the magnetic vector potential of the target point on the buried oil and gas pipeline based on the loop magnetic flux, wherein the direction of the magnetic vector potential is consistent with the direction of the current in the cable line; and an induced electromotive force determining subunit, used to determine the induced electromotive force based on the boundary length between the magnetic vector potential and the closed loop.

[0130] Optionally, the first determining unit 304 includes: a magnetic vector position acquisition subunit, used to acquire the real part and imaginary part of the magnetic vector position, wherein the real part of the magnetic vector position is used to represent the component of the magnetic vector position vector in the real number space, and the imaginary part of the magnetic vector position is used to represent the component of the magnetic vector position vector in the imaginary number space; a magnetic vector component detection subunit, used to detect the magnetic vector component along a first direction and the magnetic vector component along a second direction in the path corresponding to the magnetic vector position, wherein the first direction and the second direction are parallel to each other, and the starting point of the first direction is the top end point of the buried oil and gas pipeline, the ending point of the first direction is the top end point of the cable line, the starting point of the second direction is the bottom end point of the cable line, and the ending point of the second direction is the bottom end point of the buried oil and gas pipeline; and a contact voltage determining subunit, used to determine the electromagnetic contact voltage based on the magnetic vector component along the first direction, the magnetic vector component along the second direction, and the real and imaginary parts of the magnetic vector position in the path corresponding to the magnetic vector position.

[0131] Optionally, the second determining unit 305 includes: an interference current determining subunit, used to determine interference current information based on the capacitance of the buried oil and gas pipeline, the contact resistance between the buried oil and gas pipeline and the soil, and the induced electromotive force; and an interference voltage determining subunit, used to determine interference voltage information based on the resistance of the buried oil and gas pipeline, the electromagnetic contact voltage, and the interference current information.

[0132] According to another aspect of the embodiments of this application, a computer-readable storage medium is also provided, which stores a computer program, wherein when the computer program is executed, the device where the computer-readable storage medium is located executes the above-described method for determining interference information of cable lines to buried oil and gas pipelines.

[0133] According to another aspect of the embodiments of this application, an electronic device is also provided, including one or more processors and a memory, the memory being used to store one or more programs, wherein when the one or more programs are executed by the one or more processors, the one or more processors cause the one or more processors to perform the above-described method for determining interference information of cable lines to buried oil and gas pipelines.

[0134] According to another aspect of the embodiments of this application, a computer program product is also provided, including a computer program or instructions, which, when executed by a processor, implement the above-described method for determining interference information of cable lines to buried oil and gas pipelines.

[0135] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0136] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0137] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0138] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0139] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0140] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as a USB flash drive, read-only memory (ROM), random access memory (RAM), portable hard drive, magnetic disk, or optical disk.

[0141] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A method for determining interference information of cable lines to buried oil and gas pipelines, characterized in that, include: The process involves obtaining the interrelation parameters between the cable line and the buried oil and gas pipeline, wherein the interrelation parameters include at least the target soil resistivity of the area where the cable line and the buried oil and gas pipeline are located, the proximity distance between the cable line and the buried oil and gas pipeline, and the parallel length; obtaining the topological information corresponding to the cable line and the buried oil and gas pipeline, as well as the cross-laying area between the buried oil and gas pipeline and the cable line; and generating an electromagnetic interference simulation model based on the interrelation parameters, the cross-laying area, the resistivity of the anti-corrosion layer of the buried oil and gas pipeline, and the topological information corresponding to the cable line and the buried oil and gas pipeline, wherein the electromagnetic interference simulation model uses... This method reflects the electromagnetic environment of the cable line and the buried oil and gas pipeline under different operating conditions. Based on the electromagnetic interference simulation model, it determines the electromagnetic influence parameters of the cable line on the buried oil and gas pipeline under different operating conditions, including electromagnetic contact voltage and induced electromotive force. Based on the electromagnetic interference simulation model, it determines the magnetic induction intensity and the area defined by the closed loop of the cable line on the buried oil and gas pipeline under different operating conditions. Based on the magnetic induction intensity and the area defined by the closed loop, it determines the loop magnetic flux. Based on the loop magnetic flux, it determines the magnetic vector potential of the target point on the buried oil and gas pipeline, wherein the direction of the magnetic vector potential is relative to the direction of the cable line. The current direction is consistent; the induced electromotive force is determined according to the boundary length between the magnetic vector potential and the closed loop; the real part and imaginary part of the magnetic vector potential are obtained, wherein the real part of the magnetic vector potential is used to represent the component of the magnetic vector potential vector in the real number space, and the imaginary part of the magnetic vector potential is used to represent the component of the magnetic vector potential vector in the imaginary number space; the magnetic vector component along the first direction and the magnetic vector component along the second direction in the path corresponding to the magnetic vector potential are detected, wherein the first direction and the second direction are parallel to each other, and the starting point of the first direction is the top end point of the buried oil and gas pipeline, the ending point of the first direction is the top end point of the cable line, and the starting point of the second direction is the top end point of the cable line. The bottom endpoint of the cable line and the terminal in the second direction are the bottom endpoints of the buried oil and gas pipeline; the electromagnetic contact voltage is determined based on the magnetic vector component along the first direction, the magnetic vector component along the second direction, the real part and the imaginary part of the magnetic vector position in the path corresponding to the magnetic vector position; the interference current information and interference voltage information of the cable line to the buried oil and gas pipeline are determined based on the electromagnetic influence parameters, including: determining the interference current information based on the capacitance of the buried oil and gas pipeline, the contact resistance between the buried oil and gas pipeline and the soil, and the induced electromotive force; and determining the interference voltage information based on the resistance of the buried oil and gas pipeline, the electromagnetic contact voltage, and the interference current information.

2. The method for determining interference information of cable lines to buried oil and gas pipelines according to claim 1, characterized in that, Obtaining the target soil resistivity of the area where both the cable line and the buried oil and gas pipeline are located includes: measuring the soil resistivity of the area where the cable line is located and the soil resistivity of the area where the buried oil and gas pipeline is located, respectively, wherein the measurement points cover the entire laying path of both the cable line and the buried oil and gas pipeline; determining the area of ​​the area where the cable line is located and the area of ​​the area where the buried oil and gas pipeline is located based on the entire laying path of both the cable line and the buried oil and gas pipeline; determining the resistivity weight corresponding to the cable line based on the area of ​​the area where the cable line is located; determining the resistivity weight corresponding to the buried oil and gas pipeline based on the area of ​​the area where the buried oil and gas pipeline is located; and calculating the target soil resistivity by performing a weighted average calculation of the soil resistivity of the area where the cable line is located and the soil resistivity of the area where the buried oil and gas pipeline is located based on the resistivity weights corresponding to the cable line and the buried oil and gas pipeline.

3. The method for determining interference information of cable lines to buried oil and gas pipelines according to claim 1, characterized in that, Obtaining the target soil resistivity of the area where the cable line and the buried oil and gas pipeline are located includes: when the area where the cable line and the buried oil and gas pipeline are located is found to include K types of soil, measuring the soil resistivity of the area corresponding to each soil type to obtain K types of soil resistivity, where K is an integer greater than 1; and integrating the K types of soil resistivity into the target soil resistivity based on the area corresponding to each soil type and the distribution of the K types of soil in the area where they are located.

4. The method for determining interference information of cable lines to buried oil and gas pipelines according to claim 3, characterized in that, Based on the area corresponding to each soil type and the distribution of the K soil types in the common area, the resistivity of the K soil types is integrated into the target soil resistivity. This includes: determining the sensitivity of each soil type to electromagnetic interference based on the area corresponding to each soil type and the distribution of the K soil types, wherein the distribution of the K soil types includes the continuity of the distribution of the K soil types and the relative positional relationship of each soil type with the cable line and the buried oil and gas pipeline; determining the resistivity weight corresponding to each soil type based on the sensitivity of each soil type to electromagnetic interference and the distribution density of each soil type in a preset area around the cable line or the buried oil and gas pipeline; and calculating the target soil resistivity by weighted averaging of the K soil resistivity based on the resistivity weight corresponding to each soil type.

5. The method for determining interference information of cable lines to buried oil and gas pipelines according to claim 4, characterized in that, The sensitivity of each soil type to electromagnetic interference is positively correlated with the resistivity weight corresponding to that soil type, and the distribution density of each soil type in the preset area around the cable line or the buried oil and gas pipeline is positively correlated with the resistivity weight corresponding to that soil type.

6. The method for determining interference information of cable lines to buried oil and gas pipelines according to claim 1, characterized in that, An electromagnetic interference simulation model is generated based on the inter-corrosion parameters, the cross-laying area, the resistivity of the anti-corrosion layer of the buried oil and gas pipeline, and the topological information corresponding to the cable line and the buried oil and gas pipeline, respectively. This includes: generating a pipeline model based on the cross-laying area, the resistivity of the anti-corrosion layer of the buried oil and gas pipeline, and the topological information corresponding to the cable line and the buried oil and gas pipeline, wherein the pipeline model reflects the current distribution information of each conductor in the cable line and the buried oil and gas pipeline, the self-impedance information of each conductor and the circuit of arbitrary shape, the mutual impedance information, and the capacitance information; generating a soil structure equivalent model based on the inter-corrosion parameters, wherein the soil structure equivalent model reflects the magnetic field information in the air and soil, the electric field information in the air and soil, and the potential information of the conductors and soil in the area where the cable line and the buried oil and gas pipeline are located; and coupling the pipeline model and the soil structure equivalent model to generate the electromagnetic interference simulation model.

7. The method for determining interference information of cable lines to buried oil and gas pipelines according to claim 1, characterized in that, The electromagnetic interference simulation model is used to determine the electromagnetic influence parameters of the cable line on the buried oil and gas pipeline under different operating conditions. This includes: setting N kinds of constraints for the electromagnetic interference simulation model, where each constraint is used to simulate an operating condition scenario of the interaction between the cable line and the buried oil and gas pipeline; controlling the electromagnetic interference simulation model to perform simulation operations under each constraint condition, and obtaining the electromagnetic influence parameters of the cable line on the buried oil and gas pipeline under the corresponding operating condition from the simulation operation results.

8. The method for determining interference information of cable lines to buried oil and gas pipelines according to claim 7, characterized in that, The N constraints include at least one constraint: a first constraint, used to simulate the working condition of the cable line interacting with the buried oil and gas pipeline when transmitting normal operating current; The second constraint is used to simulate the working condition of the cable line interacting with the buried oil and gas pipeline when a short-circuit current occurs. The third constraint is used to simulate the working condition of the cable line interacting with the buried oil and gas pipeline when a lightning strike occurs; The fourth constraint is used to simulate the changing resistance of the anti-corrosion layer and the grounding transformation conditions of the buried oil and gas pipeline.

9. A device for determining interference information of cable lines to buried oil and gas pipelines, used to implement the method for determining interference information of cable lines to buried oil and gas pipelines as described in any one of claims 1 to 8, characterized in that, include: The first acquisition unit is used to acquire the interrelation parameters between the cable line and the buried oil and gas pipeline, wherein the interrelation parameters include at least the target soil resistivity of the area where the cable line and the buried oil and gas pipeline are located, the proximity distance between the cable line and the buried oil and gas pipeline, and the parallel length; the second acquisition unit is used to acquire the topological information corresponding to the cable line and the buried oil and gas pipeline respectively, as well as the cross-laying area of ​​the buried oil and gas pipeline and the cable line; the model building unit is used to construct a model based on the interrelation parameters, the cross-laying area, the resistivity of the anti-corrosion layer of the buried oil and gas pipeline, and the target soil resistivity of the buried oil and gas pipeline. The topological information corresponding to the cable line and the buried oil and gas pipeline is used to generate an electromagnetic interference simulation model, wherein the electromagnetic interference simulation model is used to reflect the electromagnetic environment of the cable line and the buried oil and gas pipeline under different operating conditions; a first determining unit is used to determine the electromagnetic influence parameters of the cable line on the buried oil and gas pipeline under different operating conditions based on the electromagnetic interference simulation model, wherein the electromagnetic influence parameters include electromagnetic contact voltage and induced electromotive force; a second determining unit is used to determine the interference current information and interference voltage information of the cable line on the buried oil and gas pipeline based on the electromagnetic influence parameters.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program, wherein when the computer program is executed, the device containing the computer-readable storage medium performs the method for determining interference information of cable lines to buried oil and gas pipelines as described in any one of claims 1 to 8.

11. An electronic device, characterized in that, The device includes one or more processors and a memory, the memory being used to store one or more programs, wherein when the one or more programs are executed by the one or more processors, the one or more processors cause the one or more processors to perform the method for determining interference information of cable lines to buried oil and gas pipelines as described in any one of claims 1 to 8.

12. A computer program product, characterized in that, It includes a computer program or instructions that, when executed by a processor, implement the method for determining interference information of cable lines to buried oil and gas pipelines as described in any one of claims 1 to 8.

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