CN114417643A - Method and device for selecting electric pole material in power distribution network - Google Patents
Method and device for selecting electric pole material in power distribution network Download PDFInfo
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- CN114417643A CN114417643A CN202210314956.3A CN202210314956A CN114417643A CN 114417643 A CN114417643 A CN 114417643A CN 202210314956 A CN202210314956 A CN 202210314956A CN 114417643 A CN114417643 A CN 114417643A
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Abstract
The invention discloses a method and a device for selecting an electric pole material in a power distribution network, which are used for acquiring an initial K value of a lead and charging information of a pole position, and verifying whether the initial K value is matched with the charging information or not; when the initial K value is matched with the investment information, determining the initial model of the electric pole; calculating the theoretical load of the cross arm of the electric pole and the theoretical cross-sectional area of the stay wire of the electric pole according to the information of receiving resources; selecting a cross arm model according to the theoretical load, and selecting a stay wire model according to the theoretical cross-sectional area; collecting the electric pole model, the cross arm model and the stay wire model to generate an electric pole material collection; the electric pole type, the cross arm type and the pull wire type are integrated, and unified calculation is performed on the integrated set, so that the mechanical structural integrity of a single pole point is guaranteed, the mechanical integrity of the whole line is guaranteed, and the safety performance of a power distribution network can be improved; meanwhile, the electric pole material is calculated in a flow mode, and complexity of design of the power distribution network can be reduced.
Description
Technical Field
The invention belongs to the technical field of power distribution network design, and particularly relates to a method and a device for selecting an electric pole material in a power distribution network.
Background
In the design of a power distribution network, the electric pole material refers to a general name of an electric pole, a cross arm, a stay wire foundation and the like, and is an important component in the power distribution network. At present, the planning design, construction and management of a medium-low voltage (namely 10kV or below) distribution network of a power system basically stay in a traditional design mode, and the mode is time-consuming, labor-consuming, low in efficiency, low in quality, slow in operation speed and incapable of meeting the requirement of fine design.
For a long time, the electric pole material selection has the characteristic of dispersed regional distribution, a unified electric pole material selection method is not available, and the custom depends on the experience estimation of engineers, so that some engineering designs are unreasonable, the safety is low, the capability of resisting severe weather is extremely poor, and when severe weather (such as weather of stormy rainstorm, thunderstorm ice and snow and the like), circuit faults (such as pole-reversing disconnection, short-circuit tripping and the like) can frequently occur.
Disclosure of Invention
The invention aims to provide a method and a device for selecting an electric pole material in a power distribution network, so that the electric pole material selection of a medium-low voltage power distribution network is integrated in a process, the mechanical integrity of a pole site and a line of the power distribution network is improved, and the safety performance of the power distribution network is ensured.
The invention adopts the following technical scheme: a method for selecting a material of an electric pole in a power distribution network comprises the following steps:
acquiring an initial K value of a wire and the collecting information of a pole position point, and verifying whether the initial K value is matched with the collecting information;
when the initial K value is matched with the investment information, determining the initial model of the electric pole;
calculating the theoretical load of the cross arm of the electric pole and the theoretical cross-sectional area of the stay wire of the electric pole according to the information of receiving resources;
selecting a cross arm model according to the theoretical load, and selecting a stay wire model according to the theoretical cross-sectional area;
and integrating the electric pole model, the cross arm model and the stay wire model to generate an electric pole material assembly.
Further, the checking whether the initial K value and the charging information match includes:
acquiring the type of a lead, and inquiring corresponding lead breaking force according to the type of the lead;
calculating the cross arm bending moment of the rod point according to the wire breaking force;
verifying the initial K value based on the cross arm bending moment;
when the verification passes, the initial K value is matched with the qualification information.
Further, when the verification fails:
and updating the initial K value, and continuing to execute until the verification is passed or the initial K value reaches a threshold value.
Further, when the initial K value reaches a threshold:
and updating the initial model of the electric pole, reacquiring the investment information, and continuing to execute until the verification is passed.
Further, the step of calculating the theoretical load of the cross arm of the electric pole according to the information of receiving the information comprises the following steps:
when the cross arm is a straight line cross arm, respectively calculating theoretical human load and theoretical icing load;
comparing the values of the theoretical human load and the theoretical icing load;
when the theoretical human load is larger than the theoretical ice coating load, the theoretical human load is used as the theoretical load of the straight cross arm; otherwise, the theoretical ice-coating load is used as the theoretical load of the straight cross arm.
Further, when the cross arm is a non-linear cross arm:
respectively calculating the horizontal bending moment and the vertical bending moment of the nonlinear cross arm;
and calculating the theoretical load of the non-linear cross arm according to the horizontal bending moment and the vertical bending moment.
Further, calculating the theoretical cross-sectional area of the guy wire of the pole includes:
calculating the tension of the wire according to the information of receiving the information;
calculating the theoretical tension of the stay wire according to the tension of the wire;
and calculating the theoretical cross-sectional area of the stay wire according to the theoretical tension.
Further, after the model of the stay wire is selected according to the theoretical cross-sectional area, the method also comprises the following steps:
acquiring theoretical tension;
calculating the theoretical diameter of the anchor rod according to the theoretical tension;
the type of the stay bar is selected according to the theoretical diameter of the stay bar.
The other technical scheme of the invention is as follows: a device for selecting a material for a power distribution network pole, comprising:
the acquisition module is used for acquiring the initial K value of the wire and the collecting information of the pole position point and verifying whether the initial K value is matched with the collecting information;
the determining module is used for determining the initial model of the electric pole when the initial K value is matched with the investment information;
the calculation module is used for calculating the theoretical load of the cross arm of the electric pole and the theoretical cross-sectional area of the stay wire of the electric pole according to the information of receiving resources;
the selection module is used for selecting the type of the cross arm according to the theoretical load and selecting the type of the stay wire according to the theoretical cross section area;
and the generation module is used for integrating the electric pole model, the cross arm model and the stay wire model to generate an electric pole material assembly.
The other technical scheme of the invention is as follows: the device for selecting the electric pole material in the power distribution network comprises a memory, a processor and a computer program which is stored in the memory and can run on the processor, wherein the processor executes the computer program to realize the method for selecting the electric pole material in the power distribution network.
The invention has the beneficial effects that: the electric pole type, the cross arm type and the pull wire type are integrated, and unified calculation is performed on the integrated set, so that the mechanical structural integrity of a single pole point is guaranteed, the mechanical integrity of the whole line is guaranteed, and the safety performance of a power distribution network can be improved; meanwhile, the electric pole material is calculated in a flow mode, and complexity of design of the power distribution network can be reduced.
Drawings
Fig. 1 is a flowchart of a method for selecting an electric pole material in a power distribution network according to an embodiment of the present invention;
FIG. 2 is a schematic view of a linear rod under load in an embodiment of the present invention;
FIG. 3 is a schematic view of a corner and a load applied to a terminal rod according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of the force applied to the linear cross arm according to the embodiment of the present invention;
FIG. 5 is a schematic diagram of the cross arm of the terminal rod according to the embodiment of the present invention;
fig. 6 is a schematic structural diagram of a device for selecting a pole material in a power distribution network according to an embodiment of the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
For a long time, in the field of power distribution network design, most of the electric pole materials are selected by designers to be decomposed into independent elements, then the types of the elements are selected according to working experience, and finally the whole power distribution network is integrally tested to obtain a final design scheme. In the testing process, the testing requirements can be met. However, the selection of the material of the pole may not be particularly precise, and although the overall test is passed, various risks are often generated in actual engineering.
Therefore, the invention discloses a method for selecting an electric pole material in a power distribution network, which comprises the following steps: step S110, obtaining an initial K value of a wire and the collecting information of a pole position point, and checking whether the initial K value is matched with the collecting information; step S120, when the initial K value is matched with the investment information, determining the initial model of the electric pole; step S130, calculating theoretical load of a cross arm of the electric pole and theoretical cross-sectional area of a stay wire of the electric pole according to the information of receiving resources; step S140, selecting a cross arm model according to the theoretical load, and selecting a stay wire model according to the theoretical cross-sectional area; and S150, collecting the electric pole model, the cross arm model and the stay wire model to generate an electric pole material collection.
The electric pole type, the cross arm type and the pull wire type are integrated, and unified calculation is performed on the integrated set, so that the mechanical structural integrity of a single pole point is guaranteed, the mechanical integrity of the whole line is guaranteed, and the safety performance of a power distribution network can be improved; meanwhile, the electric pole material is calculated in a flow mode, and complexity of design of the power distribution network can be reduced.
In the embodiment of the present invention, the checking whether the initial K value and the information to be collected are matched includes: acquiring the type of a lead, and inquiring corresponding lead breaking force according to the type of the lead; calculating the cross arm bending moment of the rod point according to the wire breaking force; verifying the initial K value based on the cross arm bending moment; when the verification is passed, the initial K value is matched with the qualification information.
Because the stress of the rod type is different, the rod type is divided into two types, one type is a straight rod, and the other type is a corner and terminal rod.
As shown in fig. 2, the linear rod is not guyed, while the linear rod is primarily subjected to horizontal lateral wind loads. The horizontal load generates the largest bending moment at the A section of the ground of the electric pole, and the bending moment must be smaller than the allowable bending moment of the electric pole, namely the maximum wind speed in the ice-free state and the corresponding wind speed in the ice-covered state. The bending moment at the section A of the linear rod is specifically calculated by formula 1:
wherein the content of the first and second substances,P 1、P 2the wind load (N) of the upper layer wire and the lower layer wire is determined according to the information of collection;h 1、h 2respectively the height of the corresponding wire from the ground,h 3is the centroid of the horizontal projection area above the ground of the electric pole. Such as 150 x 8 pole, the diameter of the pole is 0.15m, the height of the pole is 8m, the buried depth is 1.5m,h 3=2.89m。
As shown in fig. 3, the corner and terminal pole mainly bears the horizontal tension of the wire, and the maximum bending moment and shear force are generated at the section a of the pole guy due to the guy balance. The bending moment and the shearing force cannot be larger than the allowable bending moment and the shearing force of the electric pole, and can be calculated according to the conditions of lowest air temperature, no ice, no wind and no disconnection.
The corner and the bending moment of the A interface of the terminal rod are calculated by a formula 3.
In the formula, the compound is shown in the specification,P 1、P 2the maximum tension (N) of the wire to the electric pole is respectively calculated through the information of collection;h 1、h 2respectively, corresponding heights (m).
After calculating the bending moment, the bending moment is obtained by
To calculate the theoretical strength coefficient of the electric pole and pass
Comparing it with the actual strength coefficient of the pole,
the standard test bending moment of the electric pole is adopted,
is a poleThe inter-intensity coefficient. That is to say, when the model of the electric pole is selected, when the initial K value is matched with the charging information, the strength verification of the electric pole is required, if the strength verification of the electric pole passes, the initial K value is matched with the charging information, otherwise, the model of the electric pole is required to be modified.
Specifically, the checking whether the initial K value is matched with the information to be collected includes: acquiring the type of a lead, and inquiring corresponding lead breaking force according to the type of the lead; calculating the cross arm bending moment of the rod point according to the wire breaking force; verifying the initial K value based on the cross arm bending moment; when the verification passes, the initial K value is matched with the qualification information.
For ease of calculation, each rod site in the set of rod sites is assigned an initial K value. Then, according to the wire model, inquiring the corresponding wire breaking force in a wire model database
Then through
Calculating the tension of the wire on the cross-arm, i.e. the wire tension
，KTo an initial K value, and finally by
To judge the calculated cross arm bending momentMWhether is smaller than the allowable bending moment of the cross arm angle steel
And when the current initial K value is smaller than the required K value, the current initial K value meets the requirement, otherwise, the initial K value is increased, and the verification process is continuously repeated. Wherein the content of the first and second substances,nthe number of cross arms for the pole location point,
at the maximum of the wire icing and live loads,
in a tension resistant sectionnThe distance between one rod site and its previous rod site.
Specifically, when the verification fails: the calculated cross arm bending moment is too large, so that the initial K value needs to be updated, the execution is continued, and the verification is passed or the initial K value reaches the threshold value.
In addition, when the initial K value reaches the threshold value, the K value cannot be increased any more, and at the moment, the model of the electric pole needs to be replaced and then verified, namely, the investment information is acquired again and is continuously executed until the verification is passed.
The initial K value, the information of receiving the resources and the concrete model of the electric pole can be determined through the method, then the model of the cross arm on the electric pole needs to be selected, and in the embodiment of the invention, the selection is also needed through calculation of the determined information of receiving the resources.
The linear pole cross arm in the circuit mainly plays a role in supporting a wire, so that vertical load is borne; the worst load case occurs in the case of ice coating of the wire. The corner pole and the terminal pole cross arm mainly bear horizontal load and vertical load of the vertical and cross arms of the lead, and the most unfavorable condition generally occurs when the lead generates maximum stress (generally, the lowest air temperature); the corner tension-resistant rod mainly bears the horizontal resultant force formed by the horizontal pulling forces on the two sides of the wire and the vertical load of the wire, and the maximum adverse load mainly occurs when the wire on one side is broken. In summary, the cross arm structure calculation is mainly summarized in the straight cross arm and the terminal cross arm.
When the cross arm is a straight line cross arm, respectively calculating theoretical human load and theoretical icing load; comparing the values of the theoretical human load and the theoretical icing load; when the theoretical human load is larger than the theoretical ice coating load, the theoretical human load is used as the theoretical load of the straight cross arm; otherwise, the theoretical ice-coating load is used as the theoretical load of the straight cross arm.
Specifically, as shown in fig. 4, under normal conditions, the maximum bending moment borne by the wire at the section 0 during ice coating is:
when considering live loads (i.e. theoretical human loads), then there are:
wherein the content of the first and second substances,
in order to be the theoretical bending moment of the ice-coating load,Landl the distance (cm) between the wire and the center of the electric pole and the end of the cross arm,G 3the vertical load (N) of the dead weight of the wire and the ice coating weight is calculated according to the determined collected information,G Z is the dead weight (N) of the extending arm of the cross arm,
is the theoretical bending moment (N-cm) of human load,G 1the vertical load (N) which is the dead weight of the lead is calculated according to the determined collected information,G H is a movable load maintainer (N),
。
after the two conditions are calculated, the maximum bending moment M is takenOGTo select the cross arm, the stress is MOG≤[W]In the formula [ W ]]Is the allowable bending moment of the cross arm angle steel.
As another example, as shown in fig. 5, when the cross arm is a non-linear cross arm: respectively calculating the horizontal bending moment and the vertical bending moment of the nonlinear cross arm; and calculating the theoretical load of the non-linear cross arm according to the horizontal bending moment and the vertical bending moment. In this figure, the non-linear cross-arm is subjected to the maximum bending moment at the 0 point of the cross-section, in the figurelThe moment arm is the moment arm of the vertical bending moment, namely the distance between the ends of the cross arms of the wires. The horizontal bending moment is also the bending moment generated by the horizontal tension resistance force, by
The calculation results in that,
and calculating by using an initial K value, wherein K represents a basic safety factor. The vertical bending moment is also the bending moment generated by the vertical load and is calculated
It is obtained that,
the self weight of the wire and the total specific load of ice coating are calculated by an initial K value. Further, a theoretical load of the nonlinear cross arm is obtained, and a corresponding cross arm model is selected according to the load. In addition, when there is no cross arm with corresponding model in the cross arm database, the following measures can be adopted: (1) adding supporting iron on the cross arm; (2) increasing the types of cross arm angle irons; (3) reducing the line span and the wire use stress.
The cross arm calculation process is given, and then the stay wire calculation process is entered, the line stay wire mainly balances the horizontal load of the wire tension borne by the electric pole, so the stress of the stay wire is determined by the horizontal load of the wire, and the maximum horizontal load of the wire is determined by the maximum design stress of the wire, the section of the wire and the number of the wires in the line design. In the formed line: the stay wire of the linear tension-resisting rod is used for balancing the horizontal load of the lead on the other side when the circuit is broken; the small-corner straight rod pull wire (external angle pull wire) is used for balancing resultant force on a branch angle line formed by horizontal loads of wires on two sides; the pull wires on the two sides of the circuit of the corner tension-resistant rod are used for balancing the horizontal load of the wire on the other side when the wire on any side is broken; the outer angle stay wire is used for balancing resultant force on a branch angle wire formed by horizontal tension of the leads at two sides when the line normally runs; the bracing wires of the terminal rods are used for balancing horizontal load generated by the wires on one side of the line.
Specifically, calculating the theoretical cross-sectional area of the guy wire of the electric pole includes: calculating the tension of the wire according to the determined tension; calculating the theoretical tension of the stay wire according to the tension of the wire; and calculating the theoretical cross-sectional area of the stay wire according to the theoretical tension.
The wire tension is mainly determined according to the value of the K value, and is in direct proportion to the initial K value. Theoretical pull through of wire
And is calculated, F represents the wire tension,
and the included angle between the stay wire and the electric pole is shown. After the theoretical tension of the wire is obtained, the wire is passed through
Calculating the theoretical cross-sectional area of the wire, wherein S is the theoretical cross-sectional area,Kin order to ensure the safety factor of the stay wire,
is ultimate tensile strength of the stay (N/mm)2). And selecting the stay wire just larger than the theoretical cross sectional area in the stay wire model database according to the theoretical cross sectional area.
In one embodiment, the selecting the pull wire type according to the theoretical cross-sectional area further comprises: acquiring theoretical tension; according to theoretical tension and formula
Calculating the theoretical diameter of the anchor rod; the type of the anchor rod is selected according to the theoretical diameter of the anchor rod, wherein,
the safety coefficient of the anchor rod is shown, and a is the tensile strength breaking force of the steel bar.
The invention also discloses a device for selecting the electric pole material in the power distribution network, which comprises an acquisition module 210, a selection module and a selection module, wherein the acquisition module 210 is used for acquiring the initial K value of a lead and the charging information of a pole position point and verifying whether the initial K value is matched with the charging information; a determining module 220, configured to determine an initial model of the electric pole when the initial K value matches the funding information; the calculation module 230 is used for calculating the theoretical load of the cross arm of the electric pole and the theoretical cross-sectional area of the guy of the electric pole according to the information of collecting resources; a selection module 240 for selecting a cross arm model according to a theoretical load and selecting a pull line model according to a theoretical cross-sectional area; and a generating module 250, configured to set the electric pole model, the cross arm model, and the pull wire model, and generate an electric pole material set.
It should be noted that, for the information interaction, execution process, and other contents between the modules of the apparatus, the specific functions and technical effects of the embodiments of the method are based on the same concept, and thus reference may be made to the section of the embodiments of the method specifically, and details are not described here.
It will be clear to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional modules is merely illustrated, and in practical applications, the above function distribution may be performed by different functional modules according to needs, that is, the internal structure of the apparatus is divided into different functional modules to perform all or part of the above described functions. Each functional module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional modules are only used for distinguishing one functional module from another, and are not used for limiting the protection scope of the application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
The invention also discloses a device for selecting the electric pole material in the power distribution network, which comprises a memory, a processor and a computer program which is stored in the memory and can run on the processor, wherein the processor realizes the method for selecting the electric pole material in the power distribution network when executing the computer program.
The device can be a desktop computer, a notebook, a palm computer, a cloud server and other computing equipment. The apparatus may include, but is not limited to, a processor, a memory. Those skilled in the art will appreciate that the apparatus may include more or fewer components, or some components in combination, or different components, and may also include, for example, input-output devices, network access devices, etc.
The Processor may be a Central Processing Unit (CPU), and the Processor may be other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The storage may in some embodiments be an internal storage unit of the device, such as a hard disk or a memory of the device. The memory may also be an external storage device of the apparatus in other embodiments, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), etc. provided on the apparatus. Further, the memory may also include both an internal storage unit and an external storage device of the apparatus. The memory is used for storing an operating system, application programs, a BootLoader (BootLoader), data, and other programs, such as program codes of the computer programs. The memory may also be used to temporarily store data that has been output or is to be output.
The invention also discloses a computer readable storage medium, which stores a computer program, and the computer program is executed by a processor to realize the electric pole material selection method in the power distribution network.
The invention also discloses a computer program product, and when the computer program product runs on the terminal equipment, the terminal equipment executes the method for selecting the electric pole material in the power distribution network.
The product may be stored in a computer readable storage medium if it is implemented in the form of a software functional unit and sold or used as a stand-alone product. Based on such understanding, all or part of the flow in the method of the embodiments described above can be realized by controlling the related hardware through instructions of a computer program, which can be stored in a computer readable storage medium, and when the computer program is executed by a processor, the steps of the embodiments of the methods described above can be realized. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer readable medium may include at least: any entity or device capable of carrying computer program code to a photographing apparatus/terminal apparatus, a recording medium, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), an electrical carrier signal, a telecommunications signal, and a software distribution medium. Such as a usb-disk, a removable hard disk, a magnetic or optical disk, etc. In certain jurisdictions, computer-readable media may not be an electrical carrier signal or a telecommunications signal in accordance with legislative and patent practice.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment. Those of ordinary skill in the art will appreciate that the various illustrative modules and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
Claims (10)
1. A method for selecting a material of an electric pole in a power distribution network is characterized by comprising the following steps:
acquiring an initial K value of a wire and the collecting information of a pole position point, and verifying whether the initial K value is matched with the collecting information;
when the initial K value is matched with the investment information, determining an initial model of the electric pole;
calculating theoretical load of a cross arm of the electric pole and theoretical cross-sectional area of a stay wire of the electric pole according to the information of collecting resources;
selecting a cross arm model according to the theoretical load, and selecting a stay wire model according to the theoretical cross-sectional area;
and collecting the electric pole model, the cross arm model and the stay wire model to generate an electric pole material collection.
2. The method for selecting the material for the electric pole in the power distribution network according to claim 1, wherein the step of checking whether the initial K value is matched with the charging information comprises the steps of:
acquiring a lead model, and inquiring corresponding lead breaking force according to the lead model;
calculating the cross arm bending moment of the pole point according to the wire breaking force;
verifying the initial K value based on the cross arm bending moment;
when the verification passes, the initial K value is matched with the qualification information.
3. The method for selecting the material of the electric pole in the power distribution network according to claim 2, wherein when the verification fails:
and updating the initial K value, and continuing to execute until the verification is passed or the initial K value reaches a threshold value.
4. A method for selecting a material for an electrical pole in a power distribution network as claimed in claim 3, wherein when said initial K value reaches a threshold value:
and updating the initial model of the electric pole, reacquiring the investment information, and continuing to execute until the verification is passed.
5. The method for selecting the material of the electric pole in the power distribution network according to any one of claims 1 to 4, wherein the step of calculating the theoretical load of the cross arm of the electric pole according to the charging information comprises the following steps:
when the cross arm is a straight cross arm, respectively calculating theoretical human load and theoretical icing load;
comparing the values of the theoretical human load and the theoretical icing load;
when the theoretical human load is larger than the theoretical icing load, taking the theoretical human load as the theoretical load of the linear cross arm; and if not, taking the theoretical icing load as the theoretical load of the linear cross arm.
6. The method for selecting a material for an electrical pole in a power distribution network as recited in claim 5, wherein when said cross arm is a non-linear cross arm:
respectively calculating the horizontal bending moment and the vertical bending moment of the nonlinear cross arm;
and calculating the theoretical load of the non-linear cross arm according to the horizontal bending moment and the vertical bending moment.
7. The method of selecting a material for an electrical pole in a power distribution network as recited in claim 6, wherein calculating the theoretical cross-sectional area of the mast guy wire comprises:
calculating the tension of the wire according to the information of receiving the information;
calculating theoretical tension of the stay wire according to the tension of the lead;
and calculating the theoretical cross-sectional area of the stay wire according to the theoretical tension.
8. The method of claim 7, further comprising, after selecting the number of pull wires based on the theoretical cross-sectional area:
acquiring the theoretical tension;
calculating the theoretical diameter of the stay bar according to the theoretical tension;
and selecting the type of the stay bar according to the theoretical diameter of the stay bar.
9. A pole material selection device in a power distribution network is characterized by comprising:
the acquisition module is used for acquiring an initial K value of a wire and the collecting information of the pole position point and verifying whether the initial K value is matched with the collecting information;
the determining module is used for determining the initial model of the electric pole when the initial K value is matched with the investment information;
the calculation module is used for calculating the theoretical load of the cross arm of the electric pole and the theoretical cross-sectional area of the stay wire of the electric pole according to the information of receiving resources;
the selection module is used for selecting the type of a cross arm according to the theoretical load and selecting the type of a stay wire according to the theoretical cross-sectional area;
and the generating module is used for integrating the electric pole model, the cross arm model and the stay wire model to generate an electric pole material integration.
10. An apparatus for selecting electric pole material in an electric distribution network, comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor when executing the computer program implements a method for selecting electric pole material in an electric distribution network according to any one of claims 1 to 8.
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| Publication number | Priority date | Publication date | Assignee | Title |
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