CN104331566A - 500kV alternating-current linear angle tower electric field simulation system - Google Patents
500kV alternating-current linear angle tower electric field simulation system Download PDFInfo
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- CN104331566A CN104331566A CN201410631937.9A CN201410631937A CN104331566A CN 104331566 A CN104331566 A CN 104331566A CN 201410631937 A CN201410631937 A CN 201410631937A CN 104331566 A CN104331566 A CN 104331566A
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Abstract
The invention discloses a 500kV alternating-current linear angle tower electric field simulation system. The 500kV alternating-current linear angle tower electric field simulation system comprises a corner rod tower, an insulator, an armor clamp model library, a conducting-wire model establishing unit, a finite element solving unit and a post-processing unit, which are sequentially connected with one another; the angle rod tower, the insulator and the armor clamp model library are respectively an element library formed after modeling a linear corner tower model; the conducting-wire model establishing unit is used for realizing parameter setting of a conducting wire; the definite element solving unit is used for carrying out the definite element analysis by calling ANSYS simulation software; the post-processing unit is used for processing a calculation result of a definite element solving system and acquiring a physical quantity needing to be displayed. By adopting the 500kV alternating-current linear angle tower electric field simulation system, the environmental protection expense on the aspect of a 500kV transmission line project electric field is reduced, a parameter structure can be assigned in a self-defining manner in the parameter modeling process, so that the distribution situation of a power transmission rod tower electric field under the same working condition and different structures or arrangement ways can be calculated, and data evidence can be provided for improving the maximum field intensity on the surface of the conducting wire and an armor clamp.
Description
Technical field
The present invention relates to the construction field of extra-high voltage alternating current-direct current power transmission engineering, particularly relate to 500kV AC linear angle tower Electric Field Simulation System.
Background technology
Since entering twentieth century, for meeting growing need for electricity, electrical network scale, capacity expand rapidly, and project of transmitting and converting electricity is also in enforcement at full speed.Meanwhile city size sharply increases, and therefore 500kV EHV transmission engineering leap cities and towns phenomenon happens occasionally.Electromagnetic environment problem causes increasing concern.The ecological effect of electromagnetic field, electromagnetic field on the required communication of human lives, broadcast, TV, etc. impact, all having become project of transmitting and converting electricity should top-priority factor.
Straight-line angle tower gets a lot of applications in 500kV project of transmitting and converting electricity.The domestic and international research to high-voltage testing room power frequency electric field at present focuses mostly in transmission line of electricity, content is fairly perfect, but the research distributed to the power frequency electric field of power transmission line shaft tower is considerably less, only has a small amount of analysis to the Electric Field Distribution of tangent tower at present, security protection when overhauling with research work personnel.
Due to factors such as landform, transmission line of electricity can not be straight line always, and some local needs turns round, when turn round angle within 5 degree time just adopt straight-line angle tower straight-line angle tower, angle then needs greatly employing strained angled tower again; Because angle tower both sides are asymmetric, being therefore different from tangent tower when calculating, namely needing to solve both sides modeling simultaneously, loading, calculation of complex.
Summary of the invention
Instant invention overcomes the deficiencies in the prior art, the invention provides a kind of 500kV AC linear angle tower Electric Field Simulation System, Tower Model is set up according to actual straight-line angle tower, form corner pole and insulator, gold utensil model bank, parametrization lead model, obtains angle tower Electric Field Distribution by finite element solving, and visualization processing finite element solving structure, model imports convenient, calculates Electric Field Distribution simple.
500kV AC linear angle tower Electric Field Simulation System, comprise order is connected successively corner pole and insulator, gold utensil model bank, lead model sets up unit, finite element solving unit and post-processing unit;
Corner pole and insulator, gold utensil model bank are the component library just formed after straight-line angle tower model modeling.Actual parameter according to 500kV AC linear angle tower sets up the model of various straight corner shaft tower, the insulator chain of each model configuration different model and gold utensil, after various modeling, just define a component library, this component library is corner pole and insulator, gold utensil model bank.Just can import these models easily during emulation shaft tower power frequency electric field, calculate respective Electric Field Distribution.In order to realize the convenience of modularization and operation, the actual typical work transmission line of this software reference, sets up the flexible structure such as wire and wire jumper by pendency chain equation parameter, realizes becoming more meticulous modeling, comparatively meet with actual conditions.The parameters such as component size can be changed easily when building model, thus the electric field result of straight-line angle tower under obtaining different situations.
Lead model is set up unit and is arranged for the parametrization realizing wire, user only need by the setting of Parametric Language, the various parameters of wire can be changed easily, thus quickly qualitative, quantitative research wire parameter change when impact on whole shaft tower Electric Field Distribution.
The parameter of wire comprises the centre coordinate matrix that wire returns number, splitting parameter, each phase conductor, and splitting parameter comprises division number, heading spacing, division initial phase angle and wire radius.For double-circuit line, wire arrangements mode has six kinds of situations available, and different phase sequence is arranged in different border loading environments.To wire optimum configurations default value, the situation not changing parameter calculate be default models under Electric Field Distribution.
Finite element solving unit carries out finite element analysis by calling ANSYS simulation software, by finite element solving electric-field strength, utilizes mathematical approach method to simulate real physical system, removes with the unknown quantity of limited quantity the real system approaching unlimited unknown quantity;
Finite element solving electric field intensity specifically comprises the following steps:
(1) angle tower model is imported;
(2) wire parameter is set, definition unit type and cell attribute;
(3) be each entity allocation units attribute respectively;
(4) divide entity grid, sizing grid is set to adapt to the accuracy requirement of different parts electric field;
(5) loading of boundary condition, to real part and the imaginary part of cell node on-load voltage.
(6) calculate the physical quantity on each node of each unit, obtain the electric-field intensity distribution of straight-line angle tower.
Post-processing unit is used for processing finite element solving unit result of calculation, obtains the physical quantity needing to show, makes result visualization, graphical representation straight-line angle tower electric field.
Post-processing unit demonstrates maximum field intensity in zoning, the electric field intensity cloud atlas distribution of shaft tower and shaft tower component ambient, export with the form of data list and preserve, electric field intensity value on display observation path, and compare with standard, judge whether the electric field intensity of shaft tower and shaft tower component ambient exceeds threshold value.
Cloud atlas distribution can demonstrate the size distribution of research object surround intuitively, color is more deeply felt and is shown that current potential is higher, clearly can reflect the Electric Field Distribution on observation path, tentatively maximal value can be read in cloud atlas, and compared with national standard limit value, display directly perceived exceeds threshold electric field strength scope.
Compare and prior art, the present invention has the following advantages:
The present invention with 500kV transmission line of electricity straight-line angle tower for research object, modeling is carried out to 500kV transmission line of electricity Typical linear shaft tower, finite element software is adopted to complete the subdivision of computation model, load and solve, obtain 500kV transmission line of electricity typical case shaft tower to become more meticulous the Electric Field Distribution situation of model, convenient to 500kV transmission line of electricity typical case shaft tower electric Field Optimization, line arrangement, for the construction of 500kV work transmission line and operation provide the reference frame that electromagnetic compatibility is relevant, reduce 500kV work transmission line electric field aspect expenses of environmental protection, there is important engineer applied value and significance.
In parametric modeling process of the present invention, self-defined assignment can be carried out to parametrization structure, parametrization structure is mainly wire and wire jumper, thus under can same operating being calculated, transmission tower Electric Field Distribution situation under different structure or arrangement, for the maximum field strength improving wire and gold utensil surface provides data foundation.
Accompanying drawing explanation
Fig. 1 500kV AC linear of the present invention angle tower Electric Field Simulation System schematic diagram;
Fig. 2 is finite element solving electric field intensity steps flow chart schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described.
As shown in Figure 1,500kV AC linear angle tower Electric Field Simulation System, comprise order is connected successively corner pole and insulator, gold utensil model bank, lead model sets up unit, finite element solving unit and post-processing unit.
Corner pole and insulator, gold utensil model bank are the component library just formed after straight-line angle tower model modeling.Actual parameter according to 500kV AC linear angle tower sets up the model of various straight corner shaft tower, the insulator chain of each model configuration different model and gold utensil, after various modeling, just define a component library, this component library is corner pole and insulator, gold utensil model bank.Just can import these models easily during emulation shaft tower power frequency electric field, calculate respective Electric Field Distribution.In order to realize the convenience of modularization and operation, the actual typical work transmission line of this software reference, sets up the flexible structure such as wire and wire jumper by pendency chain equation parameter, realizes becoming more meticulous modeling, comparatively meet with actual conditions.The parameters such as component size can be changed easily when building model, thus the electric field result of straight-line angle tower under obtaining different situations.
Lead model is set up unit and is arranged for the parametrization realizing wire, user only need by the setting of Parametric Language, the various parameters of wire can be changed easily, thus quickly qualitative, quantitative research wire parameter change when impact on whole shaft tower Electric Field Distribution.
The parameter of wire comprises the centre coordinate matrix that wire returns number, splitting parameter, each phase conductor, and splitting parameter comprises division number, heading spacing, division initial phase angle and wire radius.For double-circuit line, wire arrangements mode has six kinds of situations available, and different phase sequence is arranged in different border loading environments.To wire optimum configurations default value, the situation not changing parameter calculate be default models under Electric Field Distribution.
Be below the present embodiment conductor part parameter example is set.
(1) circuit_n feeder number, single loop is 1, and two-circuit is 2
(2) * dim, l_xp, the x coordinate vector of each wire of phase_n and ground wire, 6 elements
* dim, l_yp, the y coordinate vector of each wire of phase_n and ground wire
* dim, l_zp, the z coordinate vector of each wire of phase_n and ground wire
(3) r_line wire radius
N_mult=4 wire division number is 4
Phase_mult=45 division just 45 degree, angle
Space_mult=450 heading spacing is 450mm
(4) coordinate of wire central point
* vfill, l_xp (1), data, the x coordinate vector of wire central point
* vfill, l_yp (1), data, the y coordinate vector of wire central point
* vfill, l_zp (1), data, z coordinate vector (5) the two-circuit phase sequence of wire central point is arranged
Xiangxu1==1 double-circuit line ABC-ABC arranges
Xiangxu1==2 double-circuit line ABC-ACB arranges
Xiangxu1==3 double-circuit line ABC-BAC arranges
Xiangxu1==4 double-circuit line ABC-BCA arranges
Xiangxu1==5 double-circuit line ABC-CAB arranges
Xiangxu1==6 double-circuit line ABC-CBA arranges.
Finite element solving unit carries out finite element analysis by calling ANSYS simulation software, by finite element solving electric-field strength, utilizes mathematical approach method to simulate real physical system, removes with the unknown quantity of limited quantity the real system approaching unlimited unknown quantity;
As shown in Figure 2, finite element solving electric field intensity specifically comprises the following steps:
(1) angle tower model is imported;
(2) wire parameter is set, definition unit type and cell attribute;
(3) be each entity allocation units attribute respectively;
(4) divide entity grid, sizing grid is set to adapt to the accuracy requirement of different parts electric field;
(5) loading of boundary condition, to real part and the imaginary part of cell node on-load voltage.
(6) calculate the physical quantity on each node of each unit, obtain the electric-field intensity distribution of straight-line angle tower.
Post-processing unit is used for processing finite element solving unit result of calculation, obtains the physical quantity needing to show, makes result visualization, graphical representation straight-line angle tower electric field.
Post-processing unit demonstrates maximum field intensity in zoning, the electric field intensity cloud atlas distribution of shaft tower and shaft tower component ambient, export with the form of data list and preserve, electric field intensity value on display observation path, and compare with standard, judge whether the electric field intensity of shaft tower and shaft tower component ambient exceeds threshold value.
Cloud atlas distribution can demonstrate the size distribution of research object surround intuitively, color is more deeply felt and is shown that current potential is higher, clearly can reflect the Electric Field Distribution on observation path, tentatively maximal value can be read in cloud atlas, and compared with national standard limit value, display directly perceived exceeds threshold electric field strength scope.
Below be only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (3)
1.500kV AC linear angle tower Electric Field Simulation System, is characterized in that, comprise order is connected successively corner pole and insulator, gold utensil model bank, lead model sets up unit, finite element solving unit and post-processing unit;
Described corner pole and insulator, gold utensil model bank are the component library just formed after straight-line angle tower model modeling: the actual parameter according to 500kV AC linear angle tower sets up the model of straight corner shaft tower; described model configures by the insulator chain of different model and gold utensil; after described angle tower modeling, form a component library, described component library is corner pole and insulator, gold utensil model bank;
Described lead model is set up unit and is arranged for the parametrization realizing wire; The parameter of wire comprises the centre coordinate matrix that wire returns number, splitting parameter, wire;
Described finite element solving unit carries out finite element analysis, by finite element solving electric-field strength by calling ANSYS simulation software;
Described post-processing unit is used for processing finite element solving unit result of calculation, obtains the physical quantity needing to show, graphical representation straight-line angle tower electric field;
Post-processing unit demonstrates maximum field intensity in zoning, the electric field intensity cloud atlas distribution of shaft tower and shaft tower component ambient, export with the form of data list and preserve, electric field intensity value on display observation path, and compare with standard, judge whether the electric field intensity of shaft tower and shaft tower component ambient exceeds threshold value.
2. 500kV AC linear angle tower Electric Field Simulation System according to claim 1, is characterized in that,
Described finite element solving electric field intensity specifically comprises the following steps:
(1) angle tower model is imported;
(2) wire parameter is set, definition unit type and cell attribute;
(3) be each entity allocation units attribute respectively;
(4) divide entity grid, sizing grid is set to adapt to the accuracy requirement of different parts electric field;
(5) loading of boundary condition, to real part and the imaginary part of cell node on-load voltage;
(6) calculate the physical quantity on each node of each unit, obtain the electric-field intensity distribution of straight-line angle tower.
3. 500kV AC linear angle tower Electric Field Simulation System according to claim 1, it is characterized in that, described splitting parameter comprises division number, heading spacing, division initial phase angle and wire radius.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106055387A (en) * | 2016-06-22 | 2016-10-26 | 华南理工大学 | Radial temperature simulation method for steel-cored aluminum strand based on ANSYS APDL (ANSYS Parametric Design Language) and ANSYS CFX |
| CN107784142A (en) * | 2016-08-31 | 2018-03-09 | 株洲中车时代电气股份有限公司 | The hot emulation mode of semiconductor power component |
| CN109921410A (en) * | 2017-12-12 | 2019-06-21 | 中电普瑞科技有限公司 | The method for arranging and device of a kind of series compensation device and peripheral equipment |
| CN111028637A (en) * | 2019-12-27 | 2020-04-17 | 广东电网有限责任公司培训与评价中心 | Live-line work training method and system based on electric field visualization |
Citations (1)
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| CN103455686A (en) * | 2013-09-17 | 2013-12-18 | 重庆大学 | Modeling method of finite element model for overhead power transmission tower-line coupling system |
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| CN103455686A (en) * | 2013-09-17 | 2013-12-18 | 重庆大学 | Modeling method of finite element model for overhead power transmission tower-line coupling system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106055387A (en) * | 2016-06-22 | 2016-10-26 | 华南理工大学 | Radial temperature simulation method for steel-cored aluminum strand based on ANSYS APDL (ANSYS Parametric Design Language) and ANSYS CFX |
| CN106055387B (en) * | 2016-06-22 | 2019-06-18 | 华南理工大学 | Steel-cored aluminium strand radial temperature emulation mode based on ANSYS APDL Yu ANSYS CFX |
| CN107784142A (en) * | 2016-08-31 | 2018-03-09 | 株洲中车时代电气股份有限公司 | The hot emulation mode of semiconductor power component |
| CN109921410A (en) * | 2017-12-12 | 2019-06-21 | 中电普瑞科技有限公司 | The method for arranging and device of a kind of series compensation device and peripheral equipment |
| CN111028637A (en) * | 2019-12-27 | 2020-04-17 | 广东电网有限责任公司培训与评价中心 | Live-line work training method and system based on electric field visualization |
| CN111028637B (en) * | 2019-12-27 | 2022-01-25 | 广东电网有限责任公司培训与评价中心 | Live-line work training method and system based on electric field visualization |
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Address after: 100761 West Chang'an Avenue, Beijing, No. 86, No. Co-patentee after: JIANGSU ELECTRIC POWER Co. Patentee after: State Grid Corporation of China Co-patentee after: STATE GRID JIANGSU ELECTRIC POWER Co.,Ltd. MAINTENANCE BRANCH Address before: 100761 West Chang'an Avenue, Beijing, No. 86, No. Co-patentee before: JIANGSU ELECTRIC POWER Co. Patentee before: State Grid Corporation of China Co-patentee before: MAINTENANCE DIVISION OF STATE GRID JIANGSU ELECTRIC POWER Co. Address after: 100761 West Chang'an Avenue, Beijing, No. 86, No. Co-patentee after: JIANGSU ELECTRIC POWER Co. Patentee after: State Grid Corporation of China Co-patentee after: MAINTENANCE DIVISION OF STATE GRID JIANGSU ELECTRIC POWER Co. Address before: 100761 West Chang'an Avenue, Beijing, No. 86, No. Co-patentee before: JIANGSU ELECTRIC POWER Co. Patentee before: State Grid Corporation of China Co-patentee before: JIANGSU ELECTRIC POWER COMPANY MAINTENANCE BRANCH |