CN108073758B - Simulation method and device for wind-induced vibration response of power transmission tower line - Google Patents
Simulation method and device for wind-induced vibration response of power transmission tower line Download PDFInfo
- Publication number
- CN108073758B CN108073758B CN201710964782.4A CN201710964782A CN108073758B CN 108073758 B CN108073758 B CN 108073758B CN 201710964782 A CN201710964782 A CN 201710964782A CN 108073758 B CN108073758 B CN 108073758B
- Authority
- CN
- China
- Prior art keywords
- transmission tower
- power transmission
- tower
- line
- wind
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
- G06F30/23—Design optimisation, verification or simulation using finite element methods [FEM] or finite difference methods [FDM]
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
- G06F17/10—Complex mathematical operations
- G06F17/16—Matrix or vector computation, e.g. matrix-matrix or matrix-vector multiplication, matrix factorization
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
- G06Q50/06—Electricity, gas or water supply
Abstract
The invention discloses a simulation method and a simulation device for wind-induced vibration response of a transmission tower line, which solve the technical problems that the existing wind-induced vibration response simulation method does not consider multi-tower modeling and does not consider the rotation angle problem of the transmission tower in space, and the wind load manual calculation process is complicated, so that the technical problem that technicians in the field need to provide the simulation method for the wind-induced vibration response of the transmission tower line is solved.
Description
Technical Field
The invention relates to the field of power simulation, in particular to a method and a device for simulating wind-induced vibration response of a power transmission tower line.
Background
With the rapid development of computer technology, numerical calculation is widely popularized, a large amount of engineering calculation analysis software comes up, but less software is available for wind-induced vibration response analysis of a power transmission tower system, and the power transmission tower has various and complex shapes and complex rod spatial relations.
The existing wind-induced vibration response simulation method does not consider multi-tower modeling and the rotation angle problem of the power transmission tower in the space, and the process of wind load manual calculation is complex, so that the technical problem that technicians in the field need to provide a power transmission tower linear wind-induced vibration response simulation method is solved.
Disclosure of Invention
The invention provides a simulation method and a simulation device for wind-induced vibration response of a transmission tower line, which are used for solving the technical problems that the existing wind-induced vibration response simulation method does not consider multi-tower modeling and does not consider the rotation angle problem of the transmission tower in space, and the wind load manual calculation process is complicated, so that a person skilled in the art needs to provide the simulation method for the wind-induced vibration response of the transmission tower line.
The invention provides a simulation method for wind-induced vibration response of a power transmission tower line, which comprises the following steps:
determining the types of the transmission tower rod units corresponding to at least two transmission towers, the types of the transmission tower rod materials corresponding to the transmission towers and the cross-sectional shapes of the transmission tower rods corresponding to the transmission towers;
establishing a local coordinate corresponding to the power transmission tower;
determining a tower type of the power transmission tower and first parameters respectively corresponding to power transmission tower feet, a power transmission tower body and a power transmission tower head of the power transmission tower, splicing the pole piece units of the power transmission tower according to the tower type and the first parameters, and establishing a line model of the power transmission tower, wherein the tower type comprises: a dry letter tower, a cat head tower and a wine glass tower;
determining the position coordinates of the foot points of the power transmission tower feet corresponding to the line model of the power transmission tower;
determining the unit attribute of a power transmission tower rod corresponding to the line model of the power transmission tower, the material attribute of the power transmission tower rod corresponding to the line model of the power transmission tower, the cross-section attribute of the power transmission tower rod corresponding to the line model of the power transmission tower and the grid division precision of the line model of the power transmission tower, and carrying out grid division on the line model of the power transmission tower according to the grid division precision to establish a finite element model of the power transmission tower;
determining a second parameter of the transmission line and a transmission line endpoint connected with the transmission line in the finite element model of the transmission tower, and establishing a corresponding transmission tower-transmission line coupling model according to the second parameter of the transmission line and the transmission line endpoint;
determining a node applying wind load in the power transmission tower-power transmission line coupling model and a load direction of the wind load applied to the node;
determining load parameters and structural parameters of the wind load, wherein the load parameters comprise: the method comprises the following steps of (1) generating the wind load, sampling points of the wind load frequency, the upper limit frequency of the wind load, the initial point height, the ground roughness, the roughness coefficient, the initial point average wind speed and the wind speed time interval;
generating wind load time-course data according to the load parameters and the structural parameters of the wind load;
and generating simulated wind load data according to the load parameters and the structural parameters of the wind load.
Preferably, said building of a corresponding transmission tower-transmission line coupling model is based on said second parameters of the transmission line and on transmission line end points:
and determining the convergence precision of the cable horizontal tension of the transmission line, and performing shape finding operation on the transmission line by a direct iteration method according to the convergence precision, the second parameter of the transmission line and the end point of the transmission line to establish a transmission tower-transmission line coupling model.
Preferably, the determining a node of the transmission tower-transmission line coupling model applying wind load and a load direction of the wind load applied to the node comprises:
and determining a node applying wind load in the power transmission tower-power transmission line coupling model, and determining the load direction of the wind load applied to the node according to the local coordinates of the power transmission tower.
Preferably, the generating of the wind load time-course data according to the load parameters and the structural parameters of the wind load comprises:
and generating a wind load power spectrum density matrix according to the load parameters and the structural parameters of the wind load, and generating wind load time-course data according to the wind load power spectrum density matrix through a harmonic synthesis method.
Preferably, the generating of the simulated wind load data according to the load parameter and the structural parameter of the wind load includes:
and generating a wind load power spectrum density matrix according to the load parameters and the structural parameters of the wind load, and performing LDLT decomposition according to the wind load power spectrum density matrix and then performing linear combination to obtain simulated wind load data.
The invention provides a wind-induced vibration response simulation device for a power transmission tower line, which comprises:
the first determining module is used for determining the types of the transmission tower rod units corresponding to at least two transmission towers, the types of the transmission tower rod materials corresponding to the transmission towers and the cross-sectional shapes of the transmission tower rods corresponding to the transmission towers;
the first establishing module is used for establishing local coordinates corresponding to the power transmission tower;
the second determining module is used for determining the tower type of the power transmission tower and first parameters respectively corresponding to a power transmission tower foot, a power transmission tower body and a power transmission tower head of the power transmission tower;
a second building module, configured to splice the transmission tower pole units according to the tower type and the first parameter, and build a line model of the transmission tower, where the tower type includes: a dry letter tower, a cat head tower and a wine glass tower;
the third determining module is used for determining the position coordinates of the foot points of the power transmission tower feet corresponding to the line model of the power transmission tower;
a fourth determining module, configured to determine a transmission tower member unit attribute corresponding to the line model of the transmission tower, a transmission tower member material attribute corresponding to the line model of the transmission tower, a transmission tower member section attribute corresponding to the line model of the transmission tower, and a grid division accuracy of the line model of the transmission tower;
the third establishing module is used for carrying out meshing on the line model of the power transmission tower according to the meshing precision and establishing a finite element model of the power transmission tower;
a fifth determining module for determining a second parameter of the transmission line and a transmission line end point connected to the transmission line in the finite element model of the transmission tower;
a fourth establishing module, configured to establish a corresponding power transmission tower-power transmission line coupling model according to the second parameter of the power transmission line and the power transmission line endpoint;
a sixth determining module, configured to determine a node of the power transmission tower-power line coupling model, where the wind load is applied, and a load direction of the wind load applied to the node;
a seventh determining module, configured to determine a load parameter and a structural parameter of the wind load, where the load parameter includes: the method comprises the following steps of (1) generating the wind load, sampling points of the wind load frequency, the upper limit frequency of the wind load, the initial point height, the ground roughness, the roughness coefficient, the initial point average wind speed and the wind speed time interval;
the first generation module is used for generating wind load time-course data according to the load parameters and the structural parameters of the wind load;
and the second generation module is used for generating simulation wind load data according to the load parameters and the structural parameters of the wind load.
Preferably, the fourth establishing module is specifically configured to:
and determining the convergence precision of the cable horizontal tension of the transmission line, and performing shape finding operation on the transmission line by a direct iteration method according to the convergence precision, the second parameter of the transmission line and the end point of the transmission line to establish a transmission tower-transmission line coupling model.
Preferably, the sixth determining module is specifically configured to:
and determining a node applying wind load in the power transmission tower-power transmission line coupling model, and determining the load direction of the wind load applied to the node according to the local coordinates of the power transmission tower.
Preferably, the first generating module is specifically configured to:
and generating a wind load power spectrum density matrix according to the load parameters and the structural parameters of the wind load, and generating wind load time-course data according to the wind load power spectrum density matrix through a harmonic synthesis method.
Preferably, the second generating module is specifically configured to:
and generating a wind load power spectrum density matrix according to the load parameters and the structural parameters of the wind load, and performing LDLT decomposition according to the wind load power spectrum density matrix and then performing linear combination to obtain simulated wind load data.
According to the technical scheme, the invention has the following advantages:
the invention provides a simulation method for wind-induced vibration response of a power transmission tower line, which comprises the following steps: determining the types of the transmission tower rod units corresponding to at least two transmission towers, the types of the transmission tower rod materials corresponding to the transmission towers and the cross-sectional shapes of the transmission tower rods corresponding to the transmission towers; establishing a local coordinate corresponding to the power transmission tower; determining a tower type of the power transmission tower and first parameters respectively corresponding to power transmission tower feet, a power transmission tower body and a power transmission tower head of the power transmission tower, splicing the pole piece units of the power transmission tower according to the tower type and the first parameters, and establishing a line model of the power transmission tower, wherein the tower type comprises: a dry letter tower, a cat head tower and a wine glass tower; determining the position coordinates of the foot points of the power transmission tower feet corresponding to the line model of the power transmission tower; determining the unit attribute of a power transmission tower rod corresponding to the line model of the power transmission tower, the material attribute of the power transmission tower rod corresponding to the line model of the power transmission tower, the cross-section attribute of the power transmission tower rod corresponding to the line model of the power transmission tower and the grid division precision of the line model of the power transmission tower, and carrying out grid division on the line model of the power transmission tower according to the grid division precision to establish a finite element model of the power transmission tower; determining a second parameter of the transmission line and a transmission line endpoint connected with the transmission line in the finite element model of the transmission tower, and establishing a corresponding transmission tower-transmission line coupling model according to the second parameter of the transmission line and the transmission line endpoint; determining a node applying wind load in the power transmission tower-power transmission line coupling model and a load direction of the wind load applied to the node; determining load parameters and structural parameters of the wind load, wherein the load parameters comprise: the method comprises the following steps of (1) generating the wind load, sampling points of the wind load frequency, the upper limit frequency of the wind load, the initial point height, the ground roughness, the roughness coefficient, the initial point average wind speed and the wind speed time interval; generating wind load time-course data according to the load parameters and the structural parameters of the wind load; and generating simulated wind load data according to the load parameters and the structural parameters of the wind load.
According to the wind-induced vibration response simulation method, the local coordinates corresponding to the power transmission towers and the power transmission tower-power transmission line coupling models corresponding to at least two power transmission towers are established, and the wind load time course data are generated by utilizing the load parameters and the structural parameters of the wind load, so that the technical problems that the multi-tower modeling is not considered, the rotation angle problem of the power transmission towers in the space is not considered, and the process of manual wind load calculation is complicated, so that the technical problem that technicians in the field need to provide the power transmission tower line wind-induced vibration response simulation method is solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic flow chart of an embodiment of a simulation method for wind-induced vibration response of a power transmission tower line provided by the present invention;
fig. 2 is a schematic flow chart of another embodiment of a simulation method for wind-induced vibration response of a power transmission tower line provided by the present invention;
FIG. 3 is a schematic view of an operation interface of simulation software of the simulation method for wind-induced vibration response of the power transmission tower line provided by the invention;
FIG. 4 is a schematic view of an operation interface of simulation software of the simulation method for wind-induced vibration response of the power transmission tower line provided by the invention;
FIG. 5 is a schematic view of an operation interface of simulation software of the simulation method for wind-induced vibration response of the power transmission tower line provided by the invention;
fig. 6 is a schematic structural diagram of an embodiment of a wind-induced vibration response simulation apparatus for a power transmission tower line provided by the invention.
Detailed Description
The embodiment of the invention provides a simulation method and a simulation device for wind-induced vibration response of a transmission tower line, and solves the technical problems that the existing wind-induced vibration response simulation method does not consider multi-tower modeling and the corner problem of the transmission tower in space, and the wind load manual calculation process is complicated, so that technicians in the field need to provide the simulation method for the wind-induced vibration response of the transmission tower line.
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a simulation method for wind-induced vibration response of a power transmission tower line according to an embodiment of the present invention includes:
101: determining the types of the transmission tower rod units corresponding to at least two transmission towers, the types of the transmission tower rod materials corresponding to the transmission towers and the cross-sectional shapes of the transmission tower rods corresponding to the transmission towers;
102: establishing a local coordinate corresponding to the power transmission tower;
103: determining the tower type of the power transmission tower and first parameters respectively corresponding to power transmission tower feet, a power transmission tower body and a power transmission tower head of the power transmission tower, splicing the rod piece units of the power transmission tower according to the tower type and the first parameters, and establishing a line model of the power transmission tower, wherein the tower type comprises: a dry letter tower, a cat head tower and a wine glass tower;
it should be noted that the first parameter may be: and the transmission tower foot distance, the tower height and other transmission tower structural parameters.
104: determining the position coordinates of the foot points of the power transmission tower feet corresponding to the line model of the power transmission tower;
105: determining the unit attribute of a power transmission tower rod corresponding to the line model of the power transmission tower, the material attribute of the power transmission tower rod corresponding to the line model of the power transmission tower, the cross-section attribute of the power transmission tower rod corresponding to the line model of the power transmission tower and the grid division precision of the line model of the power transmission tower, carrying out grid division on the line model of the power transmission tower according to the grid division precision, and establishing a finite element model of the power transmission tower;
106: determining a second parameter of the transmission line and a transmission line endpoint connected with the transmission line in the finite element model of the transmission tower, and establishing a corresponding transmission tower-transmission line coupling model according to the second parameter of the transmission line and the transmission line endpoint;
it should be noted that the power transmission line may be, but is not limited to, a steel-reinforced aluminum stranded wire, and the second parameter of the power transmission line may be: transmission line length, line density, transmission line elastic modulus, transmission line diameter, and the like.
107: determining a node applying wind load in the power transmission tower-power transmission line coupling model and a load direction of the wind load applied to the node;
108: determining the load parameters and the structural parameters of the wind load, wherein the load parameters comprise: the method comprises the following steps of (1) generating the wind load, sampling points of the wind load frequency, the upper limit frequency of the wind load, the initial point height, the ground roughness, the roughness coefficient, the initial point average wind speed and the wind speed time interval;
it should be noted that the number of simulated winds, that is, the number of wind loads to be generated by a user according to engineering or other needs, the number of frequency sampling points represents how many points the wind load numerical simulation result is composed of, the upper limit frequency is used for generating the wind load within the frequency range according to the user's needs, the initial point height is used for solving the basic value of any wind speed height, the ground roughness is used for calculating the parameter of the friction drag speed, the roughness coefficient is used for calculating the parameter of the average wind speed, the average wind speed of the initial point at the wind speed height corresponds to the average wind speed, and the wind speed time interval is the wind load numerical simulation point time interval.
109: generating wind load time-course data according to the load parameters and the structural parameters of the wind load;
110: and generating simulated wind load data according to the load parameters and the structural parameters of the wind load.
The embodiment of the invention provides a simulation method for wind-induced vibration response of a power transmission tower line, which comprises the following steps: determining the types of the transmission tower rod units corresponding to at least two transmission towers, the types of the transmission tower rod materials corresponding to the transmission towers and the cross-sectional shapes of the transmission tower rods corresponding to the transmission towers; establishing a local coordinate corresponding to the power transmission tower; determining the tower type of the power transmission tower and first parameters respectively corresponding to power transmission tower feet, a power transmission tower body and a power transmission tower head of the power transmission tower, splicing the rod piece units of the power transmission tower according to the tower type and the first parameters, and establishing a line model of the power transmission tower, wherein the tower type comprises: a dry letter tower, a cat head tower and a wine glass tower; determining the position coordinates of the foot points of the power transmission tower feet corresponding to the line model of the power transmission tower; determining the unit attribute of a power transmission tower rod corresponding to the line model of the power transmission tower, the material attribute of the power transmission tower rod corresponding to the line model of the power transmission tower, the cross-section attribute of the power transmission tower rod corresponding to the line model of the power transmission tower and the grid division precision of the line model of the power transmission tower, carrying out grid division on the line model of the power transmission tower according to the grid division precision, and establishing a finite element model of the power transmission tower; determining a second parameter of the transmission line and a transmission line endpoint connected with the transmission line in the finite element model of the transmission tower, and establishing a corresponding transmission tower-transmission line coupling model according to the second parameter of the transmission line and the transmission line endpoint; determining a node applying wind load in the power transmission tower-power transmission line coupling model and a load direction of the wind load applied to the node; determining the load parameters and the structural parameters of the wind load, wherein the load parameters comprise: the method comprises the following steps of (1) generating the wind load, sampling points of the wind load frequency, the upper limit frequency of the wind load, the initial point height, the ground roughness, the roughness coefficient, the initial point average wind speed and the wind speed time interval; generating wind load time-course data according to the load parameters and the structural parameters of the wind load; the simulation wind load data are generated according to the load parameters and the structural parameters of the wind load, the local coordinates corresponding to the power transmission towers and the power transmission tower-power transmission line coupling models corresponding to at least two power transmission towers are established, and the load parameters and the structural parameters of the wind load are utilized to generate wind load time course data and wind load time course data, so that the technical problems that the existing wind-induced vibration response simulation method does not consider multi-tower modeling and the corner problem of the power transmission tower in the space, and the manual wind load calculation process is complicated, so that the technical problem that technicians in the field need to provide the power transmission tower line wind-induced vibration response simulation method is solved.
The above is a description of an embodiment of a simulation method of a wind-induced vibration response of a power tower line, and the following is a detailed description of another embodiment of a simulation method of a wind-induced vibration response of a power tower line.
Referring to fig. 2, a simulation method for wind-induced vibration response of a power transmission tower line according to an embodiment of the present invention includes:
201: determining the types of the transmission tower rod units corresponding to at least two transmission towers, the types of the transmission tower rod materials corresponding to the transmission towers and the cross-sectional shapes of the transmission tower rods corresponding to the transmission towers;
202: establishing a local coordinate corresponding to the power transmission tower;
203: determining the tower type of the power transmission tower and first parameters respectively corresponding to power transmission tower feet, a power transmission tower body and a power transmission tower head of the power transmission tower, splicing the rod piece units of the power transmission tower according to the tower type and the first parameters, and establishing a line model of the power transmission tower, wherein the tower type comprises: a dry letter tower, a cat head tower and a wine glass tower;
in a specific implementation process, the line model construction operation may be performed through simulation software ANSYS, please refer to fig. 3 and 4, fig. 3 is a schematic diagram of the line model construction of the wine glass tower, and fig. 4 is a schematic diagram of the line model construction of the stem tower.
204: determining the position coordinates of the foot points of the power transmission tower feet corresponding to the line model of the power transmission tower;
205: determining the unit attribute of a power transmission tower rod corresponding to the line model of the power transmission tower, the material attribute of the power transmission tower rod corresponding to the line model of the power transmission tower, the cross-section attribute of the power transmission tower rod corresponding to the line model of the power transmission tower and the grid division precision of the line model of the power transmission tower, carrying out grid division on the line model of the power transmission tower according to the grid division precision, and establishing a finite element model of the power transmission tower;
206: determining a second parameter of the transmission line and a transmission line endpoint connected with the transmission line in the finite element model of the transmission tower, determining the convergence precision of the horizontal tension of the cable of the transmission line, and performing shape finding operation on the transmission line by a direct iteration method according to the convergence precision, the second parameter of the transmission line and the transmission line endpoint to establish a transmission tower-transmission line coupling model;
in a specific implementation process, the shape-finding operation of the power transmission line can be performed through simulation software ANSYS, please refer to fig. 5, and fig. 5 is a schematic diagram of the shape-finding operation of the power transmission line.
207: determining a node applying wind load in the power transmission tower-power transmission line coupling model, and determining the load direction of the wind load applied to the node according to the local coordinates of the power transmission tower;
208: determining the load parameters and the structural parameters of the wind load, wherein the load parameters comprise: the method comprises the following steps of (1) generating the wind load, sampling points of the wind load frequency, the upper limit frequency of the wind load, the initial point height, the ground roughness, the roughness coefficient, the initial point average wind speed and the wind speed time interval;
in a specific implementation process, the load parameters and the structural parameters of the wind load may be input through an MATLAB module of simulation software, please refer to fig. 3, where fig. 3 is a setting input interface of the load parameters and the structural parameters of the wind load in the MATLAB, the interface is a setting interface when the wind load generation number is 10, the sampling point number of the wind load frequency is 1024, the upper limit frequency of the wind load is 6.28, the height of the initial point is 10, the ground roughness is 0.03, the roughness coefficient is 0.16, the average wind speed of the initial point is 10, and the time interval of the wind speed is 0.5, a user needs to input data in a corresponding table, and the column number in the data table may be changed correspondingly according to the "number of simulated winds" input into the wind load parameters, for example, 2 simulated winds are determined to be generated, and 2 is input at the "number of simulated winds" to obtain a corresponding table.
209: generating a wind load power spectrum density matrix according to the load parameters and the structural parameters of the wind load, and generating wind load time-course data through a harmonic synthesis method according to the wind load power spectrum density matrix;
210: and generating a wind load power spectrum density matrix according to the load parameters and the structural parameters of the wind load, and performing LDLT decomposition according to the wind load power spectrum density matrix and then performing linear combination to obtain simulated wind load data.
The above is a description of another embodiment of a simulation method of a wind-induced vibration response of a power tower line, and a detailed description of an embodiment of a simulation apparatus of a wind-induced vibration response of a power tower line is given below.
Referring to fig. 6, a simulation apparatus for wind-induced vibration response of a power transmission tower line according to an embodiment of the present invention includes:
a first determining module 601, configured to determine the types of transmission tower pole units corresponding to at least two transmission towers, the types of transmission tower pole materials corresponding to the transmission towers, and the cross-sectional shapes of the transmission tower poles corresponding to the transmission towers;
a first establishing module 602, configured to establish local coordinates corresponding to the power transmission tower;
a second determining module 603, configured to determine a tower type of the power transmission tower and first parameters corresponding to a power transmission tower foot, a power transmission tower body, and a power transmission tower head of the power transmission tower, respectively;
a second building module 604 for building a line model of the transmission tower by splicing the pole units of the transmission tower according to the tower type and the first parameter, wherein the tower type comprises: a dry letter tower, a cat head tower and a wine glass tower;
a third determining module 605, configured to determine position coordinates of a foot point of the power transmission tower foot corresponding to the line model of the power transmission tower;
a fourth determining module 606, configured to determine a transmission tower member unit attribute corresponding to the line model of the transmission tower, a transmission tower member material attribute corresponding to the line model of the transmission tower, a transmission tower member section attribute corresponding to the line model of the transmission tower, and a grid division accuracy of the line model of the transmission tower;
a third establishing module 607, configured to perform meshing on the line model of the power transmission tower according to the meshing accuracy, and establish a finite element model of the power transmission tower;
a fifth determining module 608 for determining the second parameter of the transmission line and a transmission line end point connected to the transmission line in the finite element model of the transmission tower;
a fourth establishing module 609, configured to establish a corresponding power transmission tower-power transmission line coupling model according to the second parameter of the power transmission line and the power transmission line endpoint;
a sixth determining module 610, configured to determine a node of the power transmission tower-power line coupling model, where the wind load is applied, and a load direction of the wind load applied to the node;
a seventh determining module 611, configured to determine a load parameter and a structural parameter of the wind load, where the load parameter includes: the method comprises the following steps of (1) generating the wind load, sampling points of the wind load frequency, the upper limit frequency of the wind load, the initial point height, the ground roughness, the roughness coefficient, the initial point average wind speed and the wind speed time interval;
a first generating module 612, configured to generate wind load time-course data according to the load parameters and the structural parameters of the wind load;
a second generating module 613, configured to generate simulated wind load data according to the load parameter and the structural parameter of the wind load.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules is merely a logical division, and in actual implementation, there may be other divisions, for example, multiple modules or components may be combined or integrated into another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or modules, and may be in an electrical, mechanical or other form.
The modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical modules, may be located in one place, or may be distributed on a plurality of network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
In addition, functional modules in the embodiments of the present invention may be integrated into one processing module, or each of the modules may exist alone physically, or two or more modules are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. A power transmission tower line wind-induced vibration response simulation method is characterized by comprising the following steps:
determining the types of the transmission tower rod units corresponding to at least two transmission towers, the types of the transmission tower rod materials corresponding to the transmission towers and the cross-sectional shapes of the transmission tower rods corresponding to the transmission towers;
establishing a local coordinate corresponding to the power transmission tower;
determining a tower type of the power transmission tower and first parameters respectively corresponding to power transmission tower feet, a power transmission tower body and a power transmission tower head of the power transmission tower, splicing the pole piece units of the power transmission tower according to the tower type and the first parameters, and establishing a line model of the power transmission tower, wherein the tower type comprises: a dry letter tower, a cat head tower and a wine glass tower;
determining the position coordinates of the foot points of the power transmission tower feet corresponding to the line model of the power transmission tower;
determining the unit attribute of a power transmission tower rod corresponding to the line model of the power transmission tower, the material attribute of the power transmission tower rod corresponding to the line model of the power transmission tower, the cross-section attribute of the power transmission tower rod corresponding to the line model of the power transmission tower and the grid division precision of the line model of the power transmission tower, and carrying out grid division on the line model of the power transmission tower according to the grid division precision to establish a finite element model of the power transmission tower;
determining a second parameter of the transmission line and a transmission line endpoint connected with the transmission line in the finite element model of the transmission tower, and establishing a corresponding transmission tower-transmission line coupling model according to the second parameter of the transmission line and the transmission line endpoint;
determining a node applying wind load in a power transmission tower-power transmission line coupling model, and determining the load direction of the wind load applied to the node according to the local coordinates of the power transmission tower;
determining load parameters and structural parameters of the wind load, wherein the load parameters comprise: the method comprises the following steps of (1) generating the wind load, sampling points of the wind load frequency, the upper limit frequency of the wind load, the initial point height, the ground roughness, the roughness coefficient, the initial point average wind speed and the wind speed time interval;
generating wind load time-course data according to the load parameters and the structural parameters of the wind load;
and generating simulated wind load data according to the load parameters and the structural parameters of the wind load.
2. The transmission tower line wind induced vibration response simulation method of claim 1, wherein said establishing a corresponding transmission tower-transmission line coupling model based on said second parameter of the transmission line and the transmission line end points:
and determining the convergence precision of the cable horizontal tension of the transmission line, and performing shape finding operation on the transmission line by a direct iteration method according to the convergence precision, the second parameter of the transmission line and the end point of the transmission line to establish a transmission tower-transmission line coupling model.
3. The method for simulating a wind-induced vibration response of a transmission tower line according to claim 2, wherein the generating wind load time course data according to the load parameters and the structural parameters of the wind load comprises:
and generating a wind load power spectrum density matrix according to the load parameters and the structural parameters of the wind load, and generating wind load time-course data according to the wind load power spectrum density matrix through a harmonic synthesis method.
4. The method for simulating a wind-induced vibration response of a transmission tower line according to claim 3, wherein the generating of simulated wind load data according to the load parameters and the structural parameters of the wind load comprises:
and generating a wind load power spectrum density matrix according to the load parameters and the structural parameters of the wind load, and performing LDLT decomposition according to the wind load power spectrum density matrix and then performing linear combination to obtain simulated wind load data.
5. A simulation device for wind-induced vibration response of a power transmission tower line is characterized by comprising:
the first determining module is used for determining the types of the transmission tower rod units corresponding to at least two transmission towers, the types of the transmission tower rod materials corresponding to the transmission towers and the cross-sectional shapes of the transmission tower rods corresponding to the transmission towers;
the first establishing module is used for establishing local coordinates corresponding to the power transmission tower;
the second determining module is used for determining the tower type of the power transmission tower and first parameters respectively corresponding to a power transmission tower foot, a power transmission tower body and a power transmission tower head of the power transmission tower;
a second building module, configured to splice the transmission tower pole units according to the tower type and the first parameter, and build a line model of the transmission tower, where the tower type includes: a dry letter tower, a cat head tower and a wine glass tower;
the third determining module is used for determining the position coordinates of the foot points of the power transmission tower feet corresponding to the line model of the power transmission tower;
a fourth determining module, configured to determine a transmission tower member unit attribute corresponding to the line model of the transmission tower, a transmission tower member material attribute corresponding to the line model of the transmission tower, a transmission tower member section attribute corresponding to the line model of the transmission tower, and a grid division accuracy of the line model of the transmission tower;
the third establishing module is used for carrying out meshing on the line model of the power transmission tower according to the meshing precision and establishing a finite element model of the power transmission tower;
a fifth determining module for determining a second parameter of the transmission line and a transmission line end point connected to the transmission line in the finite element model of the transmission tower;
a fourth establishing module, configured to establish a corresponding power transmission tower-power transmission line coupling model according to the second parameter of the power transmission line and the power transmission line endpoint;
the sixth determining module is used for determining a node applying wind load in the power transmission tower-power transmission line coupling model and determining the load direction of the wind load applied to the node according to the local coordinates of the power transmission tower;
a seventh determining module, configured to determine a load parameter and a structural parameter of the wind load, where the load parameter includes: the method comprises the following steps of (1) generating the wind load, sampling points of the wind load frequency, the upper limit frequency of the wind load, the initial point height, the ground roughness, the roughness coefficient, the initial point average wind speed and the wind speed time interval;
the first generation module is used for generating wind load time-course data according to the load parameters and the structural parameters of the wind load;
and the second generation module is used for generating simulation wind load data according to the load parameters and the structural parameters of the wind load.
6. The simulation apparatus for wind-induced vibration response of a power transmission tower line according to claim 5, wherein the fourth establishing module is specifically configured to:
and determining the convergence precision of the cable horizontal tension of the transmission line, and performing shape finding operation on the transmission line by a direct iteration method according to the convergence precision, the second parameter of the transmission line and the end point of the transmission line to establish a transmission tower-transmission line coupling model.
7. The transmission tower line wind-induced vibration response simulation apparatus according to claim 6, wherein the first generation module is specifically configured to:
and generating a wind load power spectrum density matrix according to the load parameters and the structural parameters of the wind load, and generating wind load time-course data according to the wind load power spectrum density matrix through a harmonic synthesis method.
8. The simulation apparatus for wind-induced vibration response of a power transmission tower line according to claim 7, wherein the second generation module is specifically configured to:
and generating a wind load power spectrum density matrix according to the load parameters and the structural parameters of the wind load, and performing LDLT decomposition according to the wind load power spectrum density matrix and then performing linear combination to obtain simulated wind load data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710964782.4A CN108073758B (en) | 2017-10-17 | 2017-10-17 | Simulation method and device for wind-induced vibration response of power transmission tower line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710964782.4A CN108073758B (en) | 2017-10-17 | 2017-10-17 | Simulation method and device for wind-induced vibration response of power transmission tower line |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108073758A CN108073758A (en) | 2018-05-25 |
| CN108073758B true CN108073758B (en) | 2020-09-01 |
Family
ID=62159583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710964782.4A Active CN108073758B (en) | 2017-10-17 | 2017-10-17 | Simulation method and device for wind-induced vibration response of power transmission tower line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108073758B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109116753A (en) * | 2018-09-10 | 2019-01-01 | 国网江西省电力有限公司电力科学研究院 | A kind of applying method of high-voltage power transmission tower space rigid finite element model wind load |
| CN111651804B (en) * | 2020-03-31 | 2022-08-26 | 重庆科技学院 | Conventional power transmission line design wind load calculation method considering tower line coupling influence |
| CN111651920B (en) * | 2020-06-02 | 2023-03-21 | 重庆科技学院 | Transmission analysis method for wind-induced mechanical energy of long-span power transmission tower under tower-line system |
| CN112100724B (en) * | 2020-09-16 | 2021-10-19 | 广东电网有限责任公司电力科学研究院 | Wind resistance evaluation method and related device for power transmission tower |
| CN112380748A (en) * | 2020-11-13 | 2021-02-19 | 广东电网有限责任公司电力科学研究院 | Wind-induced random vibration analysis method and related device for power transmission tower |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2479517A1 (en) * | 2004-09-15 | 2006-03-15 | Alfred L. Mathieu | Libra tower for wind turbine |
| CN105740548A (en) * | 2016-02-01 | 2016-07-06 | 西安交通大学 | Power transmission line wind vibration calculation method under random wind load |
| CN105740549A (en) * | 2016-02-01 | 2016-07-06 | 西安交通大学 | Wind vibration simulation method of 220kV power transmission line tower line coupled system |
-
2017
- 2017-10-17 CN CN201710964782.4A patent/CN108073758B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2479517A1 (en) * | 2004-09-15 | 2006-03-15 | Alfred L. Mathieu | Libra tower for wind turbine |
| CN105740548A (en) * | 2016-02-01 | 2016-07-06 | 西安交通大学 | Power transmission line wind vibration calculation method under random wind load |
| CN105740549A (en) * | 2016-02-01 | 2016-07-06 | 西安交通大学 | Wind vibration simulation method of 220kV power transmission line tower line coupled system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108073758A (en) | 2018-05-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108073758B (en) | Simulation method and device for wind-induced vibration response of power transmission tower line | |
| CN102968542B (en) | Application ANSYS software carries out the method for electric power pylon structure analysis | |
| CN113538706B (en) | Digital sand table-based house scene display method, device, equipment and storage medium | |
| CN105335569B (en) | The multi-joint V-type insulator chain mechanical characteristic simulation method of UHV transmission line | |
| CN103440357A (en) | Virtual reality roaming scene generation method and system | |
| CN104866525A (en) | Virtual nuclear power station simulation teaching system and building method thereof | |
| CN104035096B (en) | Vertical wind profile nonlinear inversion method based on Doppler weather radar | |
| TWI475511B (en) | System and method for meshing curved surface | |
| CN108536912A (en) | A kind of method that Transmission Tower mechanical analysis and its App make | |
| CN104714742A (en) | Soft pen realization method and device based on touch screen | |
| CN106650086A (en) | Indirect air cooling system numerical simulation platform based on FLUENT software | |
| CN114611365A (en) | Dynamics analysis method and system based on transmission tower structure under influence of pulsating wind | |
| CN115114699A (en) | Bionic parametric design method for shell building microstructure and storage medium | |
| CN104573171A (en) | Method and system for simulating power transmission line | |
| CN112562043B (en) | Image processing method and device and electronic equipment | |
| CN112131638B (en) | Wind-induced dynamic characteristic type determination method of large-span roof structure and terminal equipment | |
| CN110334459B (en) | Rapid and refined modeling system and method for power transmission tower line system | |
| CN107423509B (en) | Method and device for constructing gas-elastic model of power transmission line tower system | |
| CN110990963B (en) | Fan interval optimization method and device and computer readable storage medium | |
| Pagani | Component-wise models for static, dynamic and aeroelastic analyses of metallic and composite aerospace structures | |
| CN114004417A (en) | Method and device for building power facility shared base station | |
| CN111400912A (en) | Aerodynamic and noise characteristic simulation method and device for wing profile with saw tooth tail edge | |
| CN103310021A (en) | Dynamic model loading method based on three-dimensional coordinate interchange | |
| CN107194092A (en) | The determination method of peripheral flow field length in the analysis of mima type microrelief Simulation of Wind Field | |
| CN116244778B (en) | Hydropower engineering simulation cloud picture display method and device, electronic equipment and storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201217 Address after: 510080 water Donggang 8, Dongfeng East Road, Yuexiu District, Guangzhou, Guangdong. Patentee after: Electric Power Research Institute of Guangdong Power Grid Co.,Ltd. Patentee after: ZHANJIANG POWER SUPPLY BUREAU OF GUANGDONG POWER GRID Co.,Ltd. Address before: 510080 water Donggang 8, Dongfeng East Road, Yuexiu District, Guangzhou, Guangdong. Patentee before: Electric Power Research Institute of Guangdong Power Grid Co.,Ltd. |