CN111539059A - Method and device for evaluating the phase line distance of overhead transmission lines - Google Patents

Abstract

A method and a device for evaluating phase line distance of a power transmission overhead line are disclosed, the method comprises the following steps: acquiring a GIM file of a power transmission and transformation project, and analyzing to obtain a corresponding three-dimensional design model and GIM project data; acquiring a calibration range of a phase line distance of the power transmission overhead line; acquiring design parameters in the verification range from the GIM engineering data, wherein the design parameters comprise meteorological information, lead information of three phase lines and lead attribute information; calculating the sag of each phase line strain section under the current meteorological condition according to the design parameters, and adjusting the display posture of the corresponding phase line according to the calculated sag; calculating the phase line distance between adjacent phase lines under the current meteorological condition, and comparing the phase line distance with the standard phase line distance under the current meteorological condition; and when the phase line distance is greater than the standard phase line distance, determining that the phase line distance of the power transmission overhead line meets the requirement.

Description

Method and device for evaluating the phase line distance of overhead transmission lines

technical field

The invention relates to the field of power transmission line design, in particular to a method and device for evaluating the phase line distance of a power transmission overhead line.

Background technique

Digital 3D design is the foundation of a new generation of intelligent design platforms, and the popularization of digital 3D design in the power industry is an inevitable trend of future development. With the development of modern technology, the integration of design business and informatization means is increasing day by day, and digital design with 3D design as the core will become the main line throughout the entire engineering process and life cycle.

The degree of visualization of the digital 3D design of power grid engineering has been greatly improved, and review experts can intuitively see the models in the power grid engineering. The safety and accuracy of the digital design of power grid engineering are important indicators of power grid engineering, which need to be reviewed by experts.

Among them, the safety of the phase line distance of the conductors in the power grid engineering design is particularly important. Generally, there are three phase lines A, B, and C on the iron tower of the substation line. These three phase lines are arranged in parallel, and the distance between the two adjacent phase lines is designed. Requirements, if not complied with, it will affect the security of the power grid. Because the safety verification of the phase line distance in the three-dimensional design of power grid engineering requires a large number of digital operations based on meteorological conditions, geological parameters, and design parameters to obtain effective values. Its calculation is complex, it takes a lot of time for design experts to calculate, it is difficult to manually check in a short time, the process is cumbersome and the amount of calculation is large.

SUMMARY OF THE INVENTION

In view of the above situation, it is necessary to provide a method and device for evaluating the phase line distance of overhead transmission lines in view of the problems of low efficiency and low accuracy in evaluating the phase line distance of overhead transmission lines in the prior art.

The embodiment of the present invention provides a method for evaluating the phase line distance of an overhead power transmission line, including:

Obtain the GIM file of a power transmission and transformation project, and analyze it to obtain the corresponding 3D design model and GIM engineering data;

Obtain the verification range of the phase line distance of the overhead transmission line;

Obtain design parameters within the verification range from the GIM engineering data, where the design parameters include meteorological information, wire information of three phase wires, and wire attribute information;

Calculate the sag of each phase line tension section under the current weather conditions according to the design parameters, and adjust the display posture of the corresponding phase line according to the calculated sag;

Calculate the phase line distance between adjacent phase lines under the current weather condition, and compare it with the standard phase line distance under the current weather condition;

When the phase line distance is greater than the standard phase line distance, it is determined that the phase line distance of the overhead power transmission line meets the requirements.

Further, in the above-mentioned method for evaluating the phase line distance of overhead transmission lines, wherein the step of calculating the sag of each phase line tension section under current weather conditions according to the design parameters includes:

According to the design parameters, the maximum sag at the center of the span of each phase line tension section under the current weather conditions is calculated and used as the sag of the phase line.

Further, in the above-mentioned method for evaluating the phase line distance of overhead transmission lines, the calculation formula of the maximum sag in the center of the span of the wires of the tensile section is:

其中，σ_n为当前气象条件时的应力；g_n为当前气象条件时的比载；l为计算档的档距，m；

为计算档的高差角。

Among them, σ _n is the stress under the current weather conditions; g _n is the specific load under the current weather conditions; l is the span of the calculation gear, m;

is the height difference angle of the calculated file.

Further, in the above-mentioned method for evaluating the phase line distance of an overhead power transmission line, the step of calculating the phase line distance between adjacent phase lines and comparing it with the standard phase line distance under the current weather conditions further includes: :

The standard phase line distance data corresponding to the voltage level is queried in the rule base, where the standard phase line distance data includes the standard phase line distances between adjacent phase lines under various weather conditions.

Further, in the above-mentioned method for evaluating the phase line distance of overhead transmission lines, the calculating the phase line distance between adjacent phase lines includes:

Take the position points on the conductors of the tensile section of each phase line that are separated by a preset distance, and calculate the distance between the corresponding position points between adjacent phase lines, and use the calculated minimum distance as the phase line distance between adjacent phase lines. .

Further, in the above-mentioned method for evaluating the phase line distance of overhead transmission lines, wherein the step of calculating the phase line distance between adjacent phase lines and comparing it with the standard phase line distance under the current weather conditions further includes: :

Prepare a verification report based on the comparison results.

The embodiment of the present invention also provides a device for evaluating the phase line distance of an overhead power transmission line, including:

The first acquisition module is used to acquire a GIM file of a power transmission and transformation project;

Parsing module for parsing the GIM file to obtain corresponding three-dimensional design model and GIM engineering data;

The second obtaining module is used to obtain the verification range of the phase line distance of the overhead transmission line;

an extraction module, configured to obtain design parameters within the verification range from the GIM engineering data, where the design parameters include meteorological information, wire information of three phase wires, and wire attribute information;

The first calculation module is used to calculate the sag of each phase line tension section under the current weather conditions according to the design parameters, and adjust the display attitude of the corresponding phase line according to the calculated sag;

The second calculation module is used to calculate the phase line distance between adjacent phase lines under the current weather conditions;

The comparison confirmation module is used to compare the phase line distance with the standard phase line distance under the current weather conditions, and when the phase line distance is greater than the standard phase line distance, determine the transmission overhead line The phase line distance meets the requirements.

Further, in the above-mentioned apparatus for evaluating the phase line distance of overhead transmission lines, the first calculation module is specifically used for:

According to the design parameters, the maximum sag at the center of the span of each phase line tension section under the current weather conditions is calculated and used as the sag of the phase line.

Further, the above-mentioned apparatus for evaluating the phase line distance of overhead transmission lines also includes:

The query module is used to query the standard phase line distance data corresponding to the voltage level in the rule base, where the standard phase line distance data includes the standard phase line distance between adjacent phase lines under each weather condition.

Further, the above-mentioned apparatus for evaluating the phase line distance of overhead transmission lines also includes:

The report making module is used to make a verification report according to the comparison result.

In the embodiment of the present invention, the GIM engineering data in the three-dimensional design model of the power transmission and transformation project is automatically obtained, and the design parameters within the verification range are obtained from the GIM engineering data, and the tensile strength of the tensile section under each meteorological condition is calculated according to the design parameters. Calculate the sag of the conductor, and adjust the display attitude of the corresponding phase line according to the calculated sag, and then calculate the phase line distance between adjacent phase lines under this meteorological condition, and compare it with the standard phase line distance, according to the comparison result. Determine whether the phase line distance of the overhead transmission line meets the design requirements. This method simplifies the review process and improves the efficiency and accuracy of engineering model review.

Description of drawings

FIG. 1 is a flow chart of a method for evaluating the phase line distance of a power transmission overhead line in the first embodiment of the present invention;

FIG. 2 is a flowchart of a method for evaluating the phase line distance of an overhead power transmission line in a second embodiment of the present invention;

FIG. 3 is a structural block diagram of an apparatus for evaluating the phase line distance of an overhead power transmission line according to a third embodiment of the present invention.

Detailed ways

The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, only used to explain the present invention, and should not be construed as a limitation of the present invention.

These and other aspects of embodiments of the present invention will become apparent with reference to the following description and accompanying drawings. In these descriptions and drawings, some specific implementations of the embodiments of the invention are specifically disclosed to represent some ways of implementing the principles of the embodiments of the invention, but it should be understood that the scope of the embodiments of the invention is not limited by this limit. On the contrary, embodiments of the present invention include all changes, modifications and equivalents falling within the spirit and scope of the appended claims.

Please refer to FIG. 1 , which is a method for evaluating the phase line distance of a power transmission overhead line according to the first embodiment of the present invention, including steps S11 to S16 .

In step S11, a GIM file of a power transmission and transformation project is acquired and analyzed to obtain a corresponding three-dimensional design model and GIM engineering data.

In this embodiment, a transmission and substation model designed by the designer adopts a unified file format of the State Grid, such as a GIM file. After the user imports the GIM file of the power transmission and transformation project, the server parses the hierarchical information of the GIM file one by one according to the storage format of the GIM in the interactive specification, so as to obtain the three-dimensional design model of the power transmission and transformation station model, and converts the power transmission and transformation station model. The 3D design model of the power transmission and transformation exhibition model is visualized on the view interface, and the user can intuitively see the structure of the power transmission and transformation exhibition model. In addition, after the GIM file is parsed, GIM engineering data is obtained, including weather information, wire information and wire attribute information of each phase line tension section, and so on. Wherein, the wire information of the tensile section includes, for example, wire type, wire K value, ground wire type, ground wire K value, and representative span, etc. The wire attribute information includes, for example, outer diameter, elastic coefficient, wire cross section, linear expansion coefficient, Break data such as breaking force and unit mass. The meteorological information includes high temperature, low temperature, strong wind, icing, annual average, external passing (lightning), internal passing (operation) and installation.

In step S12, the verification range of the phase line distance of the power transmission overhead line is obtained.

The verification range is the information input by the user, and the user can choose to check the phase line distance of the overhead line for a certain project, or a certain tension section or tower.

Step S13: Acquire design parameters within the verification range from the GIM engineering data, where the design parameters include meteorological information, conductor information of the three phase lines, and conductor attribute information.

According to the inspection range selected by the user, the corresponding design parameters in the GIM engineering data are extracted, including the meteorological information within the inspection range, the wire information and wire attribute information of each phase line tension section.

Step S14: Calculate the sag of each phase line tension section under the current weather conditions according to the design parameters, and adjust the display posture of the corresponding phase line according to the calculated sag.

Meteorological conditions affect the display attitude of the phase line, and the display attitude of the phase line is different under different meteorological conditions, resulting in different calculated phase line distances under different meteorological conditions. Therefore, in this embodiment, the current weather condition is first determined, and the presentation attitude of the phase line is adjusted according to the sag under the weather condition. The calculation of the sag of each phase line tensile section is related to the meteorological conditions, such as strong wind, high temperature, low temperature conditions or the calculated sag of the conductor under both strong wind and high temperature conditions. When the design parameters are obtained, the maximum sag of the conductors in the tensile section under each meteorological condition can be calculated according to the design parameters.

Specifically, according to the sag calculation algorithm of the maximum sag, the maximum sag at the center of the span of each phase line tension section is calculated. The formula for calculating the maximum sag in the center of the span of the wire in the tensile section is:

其中，σ_n为当前气象条件时的应力；g_n为当前气象条件时的比载；l为计算档的档距，m；

为计算档的高差角。

Among them, σ _n is the stress under the current weather conditions; g _n is the specific load under the current weather conditions; l is the span of the calculation gear, m;

is the height difference angle of the calculated file.

Further, the stress calculation formula under the current meteorological conditions is:

其中，α为导线热膨胀系数；E为弹性系数；σ_m、σ_n分别为已知情况和当前气象条件时应力；g_m，g_n分别为已知情况和当前气象条件时比载；t_m，t_n分别为已知情况和当前气象条件时气温；l₀代表档距；l_n为耐张段中各档档距；

为耐张段中各档高差角。

Among them, α is the thermal expansion coefficient of the wire; E is the elastic coefficient; σ _m , σ _n are the stress under known conditions and current meteorological conditions, respectively; g _m , g _n are the specific loads under known conditions and current meteorological conditions, respectively; t _m , t _n are the known and current weather conditions, respectively; l ₀ represents the span; l _n is the span of each span in the tension section;

It is the height difference angle of each grade in the tensile section.

Assume:

Assume:

Then: σ _n ² (σ _n -A)=B;

计算出相应的值在表1中选择求根公式，计算出电线各点水平应力σ_n。Let a=|A|, b=B,

Calculate the corresponding value and select the root-finding formula in Table 1 to calculate the horizontal stress σ _n at each point of the wire.

Table 1

In the above formula for calculating the maximum sag at the center of the span, the value of the specific load g _n is related to the meteorological conditions.

Step S15: Calculate the phase line distance between adjacent phase lines, and compare it with the standard phase line distance under the current weather condition.

Step S16, when the phase line distance is greater than the standard phase line distance, it is determined that the phase line distance of the overhead power transmission line meets the requirements.

Generally, there are three phase wires A, B and C on the iron tower of the substation. These three phase wires are arranged in parallel. The distance between the two adjacent phase wires of the three phase wires has design requirements, and the distance between the two adjacent phase wires is different. Too big and not too short.

After determining the sag of the tensile section in each phase line, adjust the display attitude of the corresponding phase line according to the sag, and calculate the phase line distance between the phase lines after the attitude adjustment. The tension sections in the three phase lines are set correspondingly, and the distance between the two phase lines can be obtained by calculating the distance between the corresponding position points of the tension sections of the adjacent two phase lines.

Compare the calculated phase distance of the tension section under the current weather conditions with the standard phase distance, and calculate the difference between the two. When the difference is within the threshold range, determine the phase distance of the overhead transmission line. meet the requirements.

In this embodiment, the phase line distance of the conductors of a tension section of an overhead transmission line is used as an example for description. It can be understood that in an actual transmission line, there are multiple conductors in the tension section, and each tension section conductor The calculation method of the phase line distance is the same, so the phase line distance of each tensile section conductor can be calculated.

During the specific implementation of the overhead transmission line, the phase line distance of each tensile section conductor calculated under each meteorological condition can also be presented in a tabular form, and the tensile section conductors that do not meet the requirements can be marked to form a verification report. For user reference.

In this embodiment, the GIM engineering data in the three-dimensional design model of the power transmission and transformation project is automatically obtained, and the design parameters within the verification range are obtained from the GIM engineering data, and the wires of the tensile section under each meteorological condition are calculated according to the design parameters. The maximum sag of the phase line is adjusted according to the calculated sag, and the display posture of the corresponding phase line is adjusted according to the calculated sag, and then the distance between the corresponding position points of the two adjacent phase lines is calculated, that is, the phase line distance is obtained, which is compared with the standard phase line distance. Yes, according to the comparison result, determine whether the phase line distance of the overhead transmission line meets the design requirements. The method is comprehensive in calculation. The sag calculation is carried out for each working condition. The shortest value of the distance between the two phase lines is selected as the phase line distance. The calculation is fast and efficient, the verification results are more intuitive, and the calculation is more intelligent. One-click automatic acquisition of calculation parameters, automatic sag, distance calculation, without manual calculation.

Please refer to FIG. 2 , which is a method for evaluating the phase line distance of a power transmission overhead line according to the second embodiment of the present invention, including steps S21 to S28 .

In step S21, a GIM file of a power transmission and transformation project is acquired and analyzed to obtain a corresponding three-dimensional design model and GIM engineering data.

The GIM file of the power transmission and transformation project is parsed to obtain the corresponding 3D design model and GIM engineering data. The GIM engineering data includes a variety of information, such as meteorological information, wire information of the tensile section, wire attribute information, and so on. Wherein, the wire information of the tensile section includes, for example, wire type, wire K value, ground wire type, ground wire K value, and representative span, etc. The wire attribute information includes, for example, outer diameter, elastic coefficient, wire cross section, linear expansion coefficient, Break data such as breaking force and unit mass. The meteorological information includes high temperature, low temperature, strong wind, icing, annual average, external passing (lightning), internal passing (operation) and installation.

Step S22, query the standard phase line distance data corresponding to the voltage level in the rule base, where the standard phase line distance data includes standard phase line distances between adjacent phase lines under each weather condition.

In the actual power transmission and transformation project, various types of power transmission and transformation engineering models are involved, and each engineering model sets the corresponding ground distance requirements according to the voltage level. The standard ground distance data of various working models are stored in the preset rule base. After importing a GIM file for obtaining the power transmission and transformation engineering model to be reviewed, the user obtains the voltage level of the power transmission and transformation engineering model from the CIM file, and queries the standard phase line distance data corresponding to the voltage level in the rule base.

The standard phase line distance data includes the standard phase line distance of the tensile section under various weather conditions. The meteorological condition is at least one of high temperature, low temperature, strong wind, icing, annual level, external passing (lightning), internal passing (operation), installation, and the like.

In step S23, the verification range of the phase line distance of the overhead transmission line is obtained.

The verification range is the information input by the user, and the user can choose to check the phase line distance of the overhead line for a certain project, or a certain tension section or tower.

Step S24: Acquire design parameters within the verification range from the GIM engineering data, where the design parameters include meteorological information, conductor information of the three phase lines, and conductor attribute information.

Step S25: Calculate the sag of each phase line tension section under the current weather conditions according to the design parameters, and adjust the display posture of the corresponding phase line according to the calculated sag.

The sag of the tensile section of each phase line is related to the meteorological conditions, such as strong wind, high temperature, low temperature conditions or the calculated conductor sag under the conditions of strong wind and high temperature at the same time. When the design parameters are obtained, the maximum sag of the conductors in the tensile section under each meteorological condition can be calculated according to the design parameters.

During specific implementation, the maximum sag at the center of the span of the wire of the tensile section can be calculated according to the sag calculation algorithm of the maximum sag.

Step S26, take the position points at the predetermined distances on the conductors of the tensile section of each phase line, and calculate the spacing between the corresponding position points between adjacent phase lines, and use the calculated minimum spacing as the distance between adjacent phase lines. Phase line distance.

The preset distance can be set according to the actual situation of the overhead line, for example, it can be set to 50cm. Take a position point at an interval of 50cm on the phase line as the calculation point, calculate the distance between the corresponding position points on the adjacent two phase lines, and take the calculated minimum distance as the phase line distance between the adjacent phase lines. In the specific calculation, the coordinates of the corresponding position points A and B on the conductors of the tensile section of the adjacent two phase lines can be obtained. The calculation formula of the distance between the AB points is:

Wherein, x ₁ , y ₁ and z ₁ are the longitude, latitude and elevation of the location point A, respectively; x ₂ , y ₂ and z ₂ are the longitude, latitude and elevation of the location point B, respectively.

In step S27, the phase line distance is compared with the standard phase line distance under the current weather conditions, and when the phase line distance is greater than the standard phase line distance, it is determined that the phase line distance of the overhead transmission line conforms to the standard phase line distance. Require.

Step S28, prepare a verification report according to the comparison result.

Wherein, the calibration report includes the shortest distance, standard value and calibration result between each phase conductor under various weather conditions.

This embodiment can automatically extract information from the three-dimensional design model, calculate the phase line distance of the conductor in the tensile section according to the extracted information, compare it with the standard design standard value, and provide a verification report for the phase line distance verification, Quickly assist review experts to make judgments and improve review efficiency.

Referring to FIG. 3, an embodiment of the present invention further provides a device for evaluating the distance between phases of overhead transmission lines, including:

The first obtaining module 10 is used to obtain a GIM file of a power transmission and transformation project;

The analysis module 20 is used for analyzing the three-dimensional design model of the power transmission and transformation project to obtain GIM engineering data;

The second obtaining module 30 is configured to obtain the verification range of the phase line distance of the overhead transmission line;

an extraction module 40, configured to obtain design parameters within the verification range from the GIM engineering data, where the design parameters include meteorological information, wire information of three phase wires, and wire attribute information;

The first calculation module 50 is used to calculate the sag of each phase line tension section under the current weather conditions according to the design parameters, and adjust the display attitude of the corresponding phase line according to the calculated sag;

The second calculation module 60 is used to calculate the phase line distance between adjacent phase lines under the current weather conditions;

The comparison confirmation module 70 is used to compare the phase line distance with the standard phase line distance under the current weather conditions, and when the phase line distance is greater than the standard phase line distance, determine that the power transmission overhead is The line phase line distance meets the requirements.

Further, in the above-mentioned apparatus for evaluating the phase line distance of overhead transmission lines, the first calculation module 50 is specifically used for:

According to the design parameters, the maximum sag at the center of the span of each phase line tension section under the current weather conditions is calculated and used as the sag of the phase line.

Further, the above-mentioned apparatus for evaluating the phase line distance of overhead transmission lines also includes:

The query module 80 is configured to query the standard phase line distance data corresponding to the voltage level in the rule base, where the standard phase line distance data includes standard phase line distances between adjacent phase lines under various weather conditions.

Further, the above-mentioned apparatus for evaluating the phase line distance of overhead transmission lines also includes:

The report making module 90 is used for making a verification report according to the comparison result.

The implementation principle and the technical effect of the device for evaluating the phase line distance of overhead transmission lines provided by the embodiments of the present invention are the same as those of the foregoing method embodiments. For the sake of brief description, the parts not mentioned in the device embodiments can be implemented with reference to the foregoing methods. corresponding content in the example.

The logic and/or steps represented in flowcharts or otherwise described herein, for example, may be considered an ordered listing of executable instructions for implementing the logical functions, may be embodied in any computer-readable medium, For use with, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a system including a processor, or other system that can fetch instructions from and execute instructions from an instruction execution system, apparatus, or apparatus) or equipment. For the purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transport the program for use by or in connection with an instruction execution system, apparatus, or apparatus.

More specific examples (non-exhaustive list) of computer readable media include the following: electrical connections with one or more wiring (electronic devices), portable computer disk cartridges (magnetic devices), random access memory (RAM), Read Only Memory (ROM), Erasable Editable Read Only Memory (EPROM or Flash Memory), Fiber Optic Devices, and Portable Compact Disc Read Only Memory (CDROM). In addition, the computer readable medium may even be paper or other suitable medium on which the program may be printed, as the paper or other medium may be optically scanned, for example, followed by editing, interpretation, or other suitable medium as necessary process to obtain the program electronically and then store it in computer memory.

It should be understood that various parts of the present invention may be implemented in hardware, software, firmware or a combination thereof. In the above-described embodiments, various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented by any one or a combination of the following techniques known in the art: Discrete logic circuits, application specific integrated circuits with suitable combinational logic gates, Programmable Gate Arrays (PGA), Field Programmable Gate Arrays (FPGA), etc.

In the description of this specification, description with reference to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples", etc., mean specific features described in connection with the embodiment or example , structure, material or feature is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above-mentioned embodiments only represent several embodiments of the present invention, and the descriptions thereof are specific and detailed, but should not be construed as a limitation on the scope of the patent of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can also be made, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims (10)

1. A power transmission overhead line phase line distance evaluation method is characterized in that, comprising: Obtain the GIM file of a power transmission and transformation project, and analyze it to obtain the corresponding 3D design model and GIM engineering data; Obtain the verification range of the phase line distance of the overhead transmission line; Obtain design parameters within the verification range from the GIM engineering data, where the design parameters include meteorological information, wire information of three phase wires, and wire attribute information; Calculate the sag of each phase line tension section under the current weather conditions according to the design parameters, and adjust the display posture of the corresponding phase line according to the calculated sag; Calculate the phase line distance between adjacent phase lines under the current weather condition, and compare it with the standard phase line distance under the current weather condition; When the phase line distance is greater than the standard phase line distance, it is determined that the phase line distance of the overhead power transmission line meets the requirements. 2. The method for evaluating the phase line distance of an overhead power transmission line as claimed in claim 1, wherein the step of calculating the sag of each phase line tension section under the current weather conditions according to the design parameters comprises: According to the design parameters, the maximum sag at the center of the span of each phase line tension section under the current weather conditions is calculated and used as the sag of the phase line. 3. The method for evaluating the phase line distance of an overhead power transmission line as claimed in claim 2, wherein the calculation formula of the maximum sag in the center of the span of the wire of the described tensile section is:

Among them, σ _n is the stress under the current weather conditions; g _n is the specific load under the current weather conditions; l is the span of the calculation gear, m;

is the height difference angle of the calculated file. 4. The method for evaluating the phase line distance of an overhead power transmission line as claimed in claim 1, wherein the calculated phase line distance between adjacent phase lines is carried out with the standard phase line distance under the current weather conditions. The comparison steps also include: The standard phase line distance data corresponding to the voltage level is queried in the rule base, where the standard phase line distance data includes the standard phase line distances between adjacent phase lines under various weather conditions. 5. The method for evaluating the phase line distance of an overhead power transmission line as claimed in claim 1, wherein said calculating the phase line distance between adjacent phase lines comprises: Take the position points on the conductors of the tensile section of each phase line that are separated by a preset distance, and calculate the distance between the corresponding position points between adjacent phase lines, and use the calculated minimum distance as the phase line distance between adjacent phase lines. . 6. The method for evaluating the phase line distance of an overhead power transmission line as claimed in claim 1, wherein the calculated phase line distance between adjacent phase lines is carried out with the standard phase line distance under the current weather conditions. The comparison steps also include: Prepare a verification report based on the comparison results. 7. A power transmission overhead line phase line distance evaluation device, characterized in that, comprising: The first acquisition module is used to acquire a GIM file of a power transmission and transformation project; The parsing module is used for parsing the GIM file to obtain the corresponding three-dimensional design model and GIM engineering data; The second obtaining module is used to obtain the verification range of the phase line distance of the overhead transmission line; an extraction module, configured to obtain design parameters within the verification range from the GIM engineering data, where the design parameters include meteorological information, wire information of three phase wires, and wire attribute information; The first calculation module is used to calculate the sag of each phase line tension section under the current weather conditions according to the design parameters, and adjust the display attitude of the corresponding phase line according to the calculated sag; The second calculation module is used to calculate the phase line distance between adjacent phase lines under the current weather conditions; The comparison confirmation module is used to compare the phase line distance with the standard phase line distance under the current weather conditions, and when the phase line distance is greater than the standard phase line distance, determine the transmission overhead line The phase line distance meets the requirements. 8. The device for evaluating the phase line distance of an overhead power transmission line according to claim 7, wherein the first calculation module is specifically used for: According to the design parameters, the maximum sag at the center of the span of each phase line tension section under the current weather conditions is calculated and used as the sag of the phase line. 9. The device for evaluating the phase line distance of overhead transmission lines as claimed in claim 7, further comprising: The query module is used for querying the standard phase line distance data corresponding to the voltage level in the rule base, where the standard phase line distance data includes the standard phase line distance between adjacent phase lines under various weather conditions. 10. The device for evaluating the phase line distance of overhead transmission lines according to claim 6, further comprising: The report making module is used to make a verification report according to the comparison result.

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