CN116566076A - Method and device for enhancing magnetic field energy taking of wine glass tower of ultrahigh-voltage alternating-current transmission line - Google Patents
Method and device for enhancing magnetic field energy taking of wine glass tower of ultrahigh-voltage alternating-current transmission line Download PDFInfo
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 84
- 239000011521 glass Substances 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 39
- 230000002708 enhancing effect Effects 0.000 title claims abstract description 26
- 230000004907 flux Effects 0.000 claims abstract description 49
- 238000004088 simulation Methods 0.000 claims abstract description 37
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 31
- 239000010959 steel Substances 0.000 claims abstract description 31
- 238000009434 installation Methods 0.000 claims abstract description 24
- 238000004364 calculation method Methods 0.000 claims abstract description 11
- 230000035699 permeability Effects 0.000 claims description 26
- 239000000463 material Substances 0.000 claims description 24
- 238000004804 winding Methods 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- 239000004020 conductor Substances 0.000 claims description 5
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910000889 permalloy Inorganic materials 0.000 claims description 3
- 229910000859 α-Fe Inorganic materials 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 description 24
- 230000001965 increasing effect Effects 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/90—Circuit arrangements or systems for wireless supply or distribution of electric power involving detection or optimisation of position, e.g. alignment
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- 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]
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/30—Circuit design
- G06F30/36—Circuit design at the analogue level
- G06F30/367—Design verification, e.g. using simulation, simulation program with integrated circuit emphasis [SPICE], direct methods or relaxation methods
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2113/00—Details relating to the application field
- G06F2113/04—Power grid distribution networks
Abstract
The invention provides a method and a device for enhancing magnetic field energy taking of a wine glass tower of an ultra-high voltage alternating current transmission line, which comprise the steps of establishing a three-dimensional finite element model of the wine glass tower of the ultra-high voltage alternating current transmission line, comprising three-phase transmission wires and tower windows arranged around intermediate phase transmission wires, wherein the magnetic flux density of a first K-shaped crank arm connecting part, a second K-shaped crank arm connecting part and a bottom cross arm connecting part of the tower windows is obtained through simulation, the part with the maximum magnetic flux density result is used as a target installation position of a parallel short circuit simulation magnetic core rod, angle steel rod pieces at two sides of the simulation magnetic core rod position are respectively attached with a simulation magnetic conduction sheet, the magnetic flux density of the simulation magnetic core rod at the target installation position is obtained through simulation calculation, the magnetic core rod is installed and fixed on the wine glass tower in actual operation after being wound with a magnetic core coil, and theoretical output voltage is obtained according to the magnetic flux density.
Description
Technical Field
The invention relates to the technical field of magnetic field energy taking of a tower of an alternating current transmission line, in particular to a method and a device for enhancing magnetic field energy taking of a cup tower of an ultrahigh voltage alternating current transmission line.
Background
The operation of the existing novel power system brings higher requirements to the intelligent construction of the power grid, and in order to ensure the safe and stable operation of the power grid system, the on-line monitoring of the operation state of the power transmission line is a method which is widely applied at present, but the power supply problem of the on-line monitoring device of the power transmission line is always restricted for the development of the device due to the fact that the tower of the power transmission line is more in service in a complex field environment.
The magnetic field energy contained on the towers around the transmission line is relatively stable, the magnetic field on the transmission tower can be utilized to perform online energy taking at present, for the wineglass tower of the ultra-high voltage alternating current transmission line, the magnetic field energy contained in each part of the structure position of the tower window is uneven in distribution and low in magnetic field energy density, the energy taking effect can be best by installing the energy taking coil at the most suitable position in the tower window structure, and the energy taking power supply power can be further improved by further enhancing the magnetic flux density in the magnetic core of the energy taking coil on the transmission tower, so that the energy taking power supply power is an important problem in future technical development.
Disclosure of Invention
According to the defects of the prior art method, the invention aims to provide the method and the device for enhancing the magnetic field energy taking of the wine glass tower of the ultra-high voltage alternating current transmission line, which can utilize the magnetic field on the transmission tower to take energy online, and install an energy taking coil at the most suitable position in the tower window structure, so as to improve the energy taking and power supply power.
In order to solve the technical problems, the invention adopts the following technical scheme:
a magnetic field energy taking enhancement method for a wine glass tower of an ultra-high voltage alternating current transmission line comprises the following steps:
step 1, establishing a three-dimensional finite element model according to structural parameters of a wine glass tower of an ultrahigh voltage alternating current transmission line, wherein the finite element model comprises a three-phase transmission wire and a tower window arranged around an intermediate phase transmission wire, and the tower window comprises a first K-shaped crank arm connecting part, a second K-shaped crank arm connecting part and a bottom cross arm connecting part;
step 2, obtaining the magnetic flux density of the first K-shaped crank arm connecting part, the second K-shaped crank arm connecting part and the bottom cross arm connecting part through simulation calculation, and taking the part with the largest magnetic flux density result as the target installation position of the simulation magnetic core rod;
step 3, parallelly connecting a short-circuit simulation magnetic core rod at a target installation position in the finite element model, and setting the relative magnetic permeability of the simulation magnetic core rod according to the material property of the simulation magnetic core rod;
step 4, respectively setting and attaching simulated magnetic conduction sheets on the surfaces of angle steel rod pieces on two sides of a target installation position in a finite element model, setting the relative magnetic permeability of the simulated magnetic conduction sheets according to the material properties of the simulated magnetic conduction sheets in the finite element model, and performing simulation calculation to obtain the magnetic flux density of a simulated magnetic core rod at the target installation position;
and 5, manufacturing a magnetic core rod and a magnetic conduction sheet which are actually used according to the simulated magnetic core rod and the simulated magnetic conduction sheet, winding the magnetic core rod around a magnetic core coil, shorting the magnetic core rod in parallel to a target installation position on an actually operated wine glass tower, attaching the magnetic conduction sheet on the surfaces of angle steel rod pieces on two sides of the target installation position, and acquiring theoretical output voltage according to the magnetic flux density of the simulated magnetic core rod.
Further, in the finite element model of step 1, the transmission conductor material is set to be aluminum or copper, the surrounding medium is set to be air, the solving boundary area is set to be 4-6 times of the model size, and current values of all phases are loaded according to the current flowing direction of the three-phase transmission conductor.
Further, in the step 2, the relative permeability of the tower window is set according to the model of the main material used for the tower window.
Further, in the step 1, the connection part of the first K-shaped crank arm, the connection part of the second K-shaped crank arm and the connection part of the bottom cross arm each include a first support arm and a second support arm which are made of angle steel rod pieces, one end of the first support arm is fixed with one end of the second support arm, a certain included angle is formed between the first support arm and the second support arm, and two ends of the magnetic core rod are respectively fixed on the first support arm and the second support arm;
in the step 4, two pieces of analog magnetic conductive sheets are respectively attached to the first support arm and the second support arm.
In step 3, the cross-sectional area and length of the analog magnetic core rod, the number of turns of the wire wound around the coil, and the distance from the intermediate phase transmission wire are adjusted to simulate, and the method for obtaining the maximum magnetic flux density of the analog magnetic core rod is preferable.
In step 4, the width, length, and thickness of the section of the simulated magnetic conductive sheet are adjusted to simulate the magnetic flux density of the simulated magnetic core rod.
Further, in step 5, the materials of the magnetic core rod and the magnetic conductive sheet include, but are not limited to, silicon steel sheet, permalloy, ferrite.
Further, in the step 5, the magnetic core rod is 5m away from the intermediate phase transmission wire, the relative magnetic conductivity of the magnetic core rod is 10000, the length of the magnetic core rod is not more than 1 m, the cross section of the magnetic core rod is rectangular, the cross section of the magnetic core rod is 30mm×10mm, two ends of the magnetic core rod are respectively contacted with one ends of two magnetic conduction pulling sheets, the length of the magnetic conduction sheet is 1.5m, and the thickness of the magnetic conduction sheet is 2mm.
In step 5, the number of turns of the wire of the magnetic core coil wound outside the magnetic core rod is 10000, the wire is an enameled wire with the diameter of 0.5mm, the magnetic core coil is wound in layers, each layer is wound by 1000 turns, and 10 layers are wound in total.
An ultra-high voltage alternating current transmission line wineglass tower magnetic field energy taking enhancing device, comprising:
the magnetic core rod is externally wound with a magnetic core coil, is arranged on a wine glass tower of the ultra-high voltage alternating current transmission line, and is connected in parallel and short-circuited at the joint of a first K-shaped crank arm, the joint of a second K-shaped crank arm or the joint of a bottom cross arm of the tower window;
the magnetic conduction sheet is attached to the surface of the angle steel rod piece;
and comparing the magnetic flux density of the first K-shaped crank arm connecting part, the second K-shaped crank arm connecting part and the bottom cross arm connecting part of the tower window, taking the part with the largest magnetic flux density result as the target installation position of the magnetic core rod, and attaching the magnetic conduction sheet to the angle steel rod pieces on the two sides of the target installation position of the magnetic core rod.
Compared with the prior art, the invention has the following advantages and beneficial effects:
(1) The method and the device for enhancing the magnetic field energy taking effect of the wine glass tower of the ultra-high voltage alternating current transmission line can effectively enhance the magnetic field energy taking effect of the angle steel rod piece of the tower window of the wine glass tower, and the mode can further improve the output power of the magnetic field energy taking of the tower of the transmission line.
(2) The method and the device for enhancing the magnetic field energy taking of the wine glass tower of the ultra-high voltage alternating current transmission line are applied to the technical field of online energy taking and power supply of the wine glass tower of the ultra-high voltage alternating current transmission line, can realize self-sufficiency of power supply of on-line monitoring equipment of the transmission line, and improve economic benefit.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application. The exemplary embodiments of the present invention and the descriptions thereof are for explaining the present invention and do not constitute an undue limitation of the present invention. In the drawings:
FIG. 1 is a flow chart of the method of the present invention.
Fig. 2 is a schematic diagram of a wineglass tower for an ultra-high voltage ac transmission line in an embodiment of the invention.
FIG. 3 is a schematic diagram of a finite element model of a tower window of a wineglass tower constructed in an embodiment of the invention.
Fig. 4 is a schematic diagram of a magnetic sheet according to an embodiment of the present invention.
Fig. 5 is a schematic view of the installation positions of the magnetic core rod and the magnetic conductive sheet in the embodiment of the invention.
In the figure, 1, a wine glass tower; 11. angle steel rod piece; 2. a three-phase power transmission wire; 3. the first K-shaped crank arm joint; 4. the second K-shaped crank arm joint; 5. the joint of the bottom cross arm; 6. simulating a magnetic conduction sheet; 7. the magnetic core rod is simulated.
Detailed Description
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.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the related art, for the wine glass tower 1 of the ultra-high voltage alternating current transmission line, the magnetic field energy distribution contained in each part of the structural position of the tower window is uneven, the magnetic field energy density is low, the effect of the magnetic core coil sleeved on the wine glass tower 1 of the ultra-high voltage alternating current transmission line is not good, and in the embodiment of the application, the problem that the online energy taking effect of the wine glass tower 1 of the ultra-high voltage alternating current transmission line is poor in the prior art is solved by providing the method and the device for enhancing the magnetic field energy taking effect of the wine glass tower 1 of the ultra-high voltage alternating current transmission line, and the online energy taking and power supply effect is improved.
In one embodiment provided by the invention, the method for enhancing the magnetic field energy of the wine glass tower of the ultra-high voltage alternating current transmission line, as shown in fig. 1-3, comprises the following steps:
step 1, establishing three-dimensional 1 according to structural parameters of a wine glass tower 1 of a certain 500kV ultrahigh-voltage alternating-current transmission line shown in fig. 2: 1, as shown in fig. 3, is a finite element model of a wineglass tower 1, the finite element model comprises three-phase transmission wires and a tower window arranged around an intermediate phase transmission wire, the tower window is made of angle steel rods and comprises a first K-shaped crank arm connecting part 3, a second K-shaped crank arm connecting part 4, a bottom cross arm connecting part 5 and three-phase transmission wires 2, the two sides of the first K-shaped crank arm connecting part 3, the second K-shaped crank arm connecting part 4 and the bottom cross arm connecting part 5 are angle steel rods 11, and simulation is carried out by establishing the finite element model;
step 2, setting the current excitation of the three-phase transmission wire 2 according to the actual operation parameters of the ultra-high voltage alternating current transmission line, wherein in general, the transmission wire material or aluminum or copper is set as aluminum, and the relative magnetic permeability is set as 1 according to the characteristics of an aluminum core; setting surrounding medium as air, setting relative permeability as 1, setting a solution boundary area as about 5 times model size, loading current values of each phase according to the extending current direction of a transmission wire, setting the current as A phase in the middle, setting the current as 500A, setting the current as B phase, setting the current as-250A, setting the current as C phase in the right, setting the relative permeability of a tower window angle rod piece 11 as 300 according to the model of a main material Q235 angle steel of a wineglass tower 1 of an ultra-high voltage alternating current transmission line, then performing finite element magnetic field simulation calculation, comparing the magnetic flux density of a first K-shaped crank arm joint 3 at the left side of a tower window, a second K-shaped crank arm joint 4 at the right and a bottom cross arm joint 5, wherein the magnetic flux density of the first K-shaped crank arm joint 3 at the left side of the tower window, the second K-shaped crank arm joint 4 at the right are 5.8mT and 5.2mT respectively, and the magnetic flux density of the bottom cross arm joint 5 at the right are 4.8mT, and taking the magnetic flux density of the B with the maximum magnetic flux density value q The location of =5.8 mT, i.e. the first K-crank arm junction 3 part junction on the left, is taken as the target mounting location;
step 3, in the finite element model, fixing a simulated magnetic core rod 7 made of high-permeability material at a target installation position of a tower window of the wine glass tower 1, winding a magnetic core coil around the simulated magnetic core rod 7, setting relative permeability of the simulated magnetic core rod 7 according to the high-permeability material attribute of the simulated magnetic core rod 7 in the finite element model, and performing simulation calculation again to obtain the magnetic flux density B of the simulated magnetic core rod 7 at the target position p1 And the magnetic flux density B of the angle bar 11 connected with the angle bar q1 The magnetic flux density change conditions of the two connected simulation magnetic core rods 7 are obtained by comparison, and meanwhile, the magnetic flux density change conditions are simultaneously changed according to B p1 Calculating theoretical output voltage U of external coil of analog magnetic core rod 7 1 Specifically, in the embodiment of the invention, then a simulated magnetic core rod 7 which is overlapped with a material with high magnetic permeability and a rectangular cross section of which the size is 30mm multiplied by 10mm and the length is 0.5m is established at the target position of a tower window of the wine glass tower 1, then the relative magnetic permeability of the simulated magnetic core rod 7 is set to 10000 according to the property of the material with high magnetic permeability of the simulated magnetic core rod 7 in a simulation model, and the simulation calculation is carried out again to obtain the magnetic flux density B of the simulated magnetic core rod 7 at the target position q1 The magnetic flux density of the angle steel bars 11 connected to the two sides of the angle steel bars is equal to 25mT, and B q1 Compared with the simulation magnetic core rod 7 with high magnetic permeability, the magnetic flux density of the angle steel rod piece 11 is reduced after the simulation magnetic core rod 7 with high magnetic permeability is connected, the magnetic flux density in the simulation magnetic core rod 7 is larger, and meanwhile, the theoretical output voltage U of the external coil of the simulation magnetic core rod 7 is calculated according to 10000 turns of the wire of the external coil of the simulation magnetic core rod 7 and 0.5mm of the diameter of the wire 1 ＝23.5V，U 1 =23.5v is the energy taking output voltage at two ends of the analog magnetic core coil, and the larger the output voltage is, the better the energy taking effect is;
step 4, respectively arranging and attaching a high-permeability simulated magnetic conduction sheet 6 on the surfaces of angle steel rod pieces 11 on two sides at the position of the parallel short-circuit simulated magnetic core rod 7 to strengthen the magnetic permeability and the magnetic circuit near the simulated magnetic core rod 7, then setting the relative magnetic permeability of the finite element model according to the high-permeability material attribute of the simulated magnetic conduction sheet 6 in the finite element model, and performing simulation calculation on the finite element model again to obtain the magnetic flux density B of the simulated magnetic core rod 7 at the target position p2 Again, the effect of increasing the magnetic flux density in the simulated magnetic core rod 7 is obtained by comparison, and the magnetic flux density is increased according to B p2 Calculating theoretical output voltage U of external coil of analog magnetic core rod 7 2 Specifically, the surface of each of the upper and lower angle steel bars 11 at the position of the lap joint simulation magnetic rod 7 shown in fig. 5 is then provided with a simulation magnetic sheet 6 with high magnetic permeability as shown in fig. 4 for enhancing the magnetic permeability and magnetic circuit of the simulation magnetic rod 7 attachment, the section width and the section width of the simulation magnetic sheet 6The section width of the bonded angle steel is kept to be 40mm, the length of the simulated magnetic conduction sheet 6 is 1.5m, the thickness of the simulated magnetic conduction sheet 6 is 2mm, then the relative magnetic permeability of the simulated magnetic conduction sheet 6 is set to 20000 according to the high magnetic permeability material property of the simulated magnetic conduction sheet 6 in a simulation model, and the model is subjected to simulation calculation again to obtain the magnetic flux density B of the simulated magnetic core rod 7 at the target position q2 =36 mT, while calculating the theoretical output voltage U of the external coil of the analog magnetic core rod 7 at this time 2 =34V, theoretical output voltage U 2 Is the theoretical output voltage of the coil after the high-permeability simulated magnetic conduction sheet 6 is attached, and the theoretical output voltage U is calculated 2 The function of (2) is mainly U 1 By contrast, the energy taking effect after the high-permeability simulated magnetic conduction sheet 6 is attached can be greatly enhanced;
the change of the magnetic flux density results of the magnetic core rod 7 simulated before and after the lamination of the high permeability simulated magnetic conductive sheet 6 is shown in table 1:
TABLE 1 variation of magnetic flux density results
From table 1, it can be seen that the magnetic flux density result of the simulated magnetic core rod 7 after the simulated magnetic sheet 6 with high magnetic conductivity is attached has obvious effect, the magnetic flux density of the simulated magnetic core rod 7 before the simulated magnetic sheet 6 is attached is 25mT, the theoretical output voltage of the magnetic core coil is 23.5V, the magnetic flux density of the simulated magnetic core rod 7 after the simulated magnetic sheet 6 is attached is 36mT, the theoretical output voltage of the magnetic core coil is 34V, the contrast efficiency of the front effect and the back effect is improved by about 43.9%, so that the magnetic field energy taking effect of the transmission line of the wine glass tower 1 can be greatly enhanced, and the requirement of supplying power to the on-line monitoring equipment is completely met;
and 5, manufacturing a magnetic core rod and a magnetic conduction sheet which are actually used according to the simulated magnetic core rod 7 and the simulated magnetic conduction sheet 6, winding the magnetic core rod around a magnetic core coil, and shorting the magnetic core rod and the magnetic conduction sheet in parallel to a target installation position on the wine glass tower 1 which is actually operated, acquiring theoretical output voltage according to the magnetic flux density of the magnetic core rod, realizing the enhancement of the magnetic field energy taking effect in the wine glass tower 1 of the ultrahigh-voltage alternating-current transmission line, and ensuring the continuous and efficient power supply of the energy taking coil.
And then taking the parameter size in the finite element model as the actual processing size of the magnetic core rod and the magnetic conduction sheet, simultaneously selecting a silicon steel sheet material with high magnetic conductivity as the manufacturing material of the magnetic core rod and the magnetic conduction sheet, selecting 10000 turns of the wire of the outer coil of the magnetic core rod as enameled wires with the wire diameter of 0.5mm, adopting a layer winding mode, and winding 1000 turns on each layer for 10 layers, reasonably guiding to install and fix the magnetic core rod wound with the magnetic core coil and the magnetic conduction sheet at the position of the practical running wine glass tower 1, and finally realizing a magnetic field energy taking enhancement method in the wine glass tower 1 of the ultra-high voltage alternating current transmission line, and guaranteeing continuous and efficient power supply of the energy taking coil.
Therefore, the method for enhancing the magnetic field energy taking of the wine glass tower 1 of the ultra-high voltage alternating current transmission line can effectively enhance the magnetic field energy taking effect of the tower window angle steel rod piece 11 of the wine glass tower 1, and the mode can further improve the output power of the magnetic field on-line energy taking of the tower of the transmission line.
The method for enhancing the magnetic field energy taking of the wine glass tower 1 of the ultra-high voltage alternating current transmission line is applied to the technical field of online energy taking and power supply of the wine glass tower 1 of the ultra-high voltage alternating current transmission line, can realize self-sufficiency of power supply of on-line monitoring equipment of the transmission line, and improves economic benefit.
In one embodiment of the invention, in said step 1 finite element model, the transmission conductor material is set to aluminum and the relative permeability is set to 1; the surrounding medium is set as air, the relative magnetic permeability is set as 1, the solving boundary area is set as 4-6 times of the model size, and current values of all phases are loaded according to the current flowing direction of the three-phase transmission wire 2.
In one embodiment of the present invention, in the step 2, the relative permeability of the tower window angle steel rod 11 is set according to the model of the main material used for the tower window angle steel rod 11, and the magnetic flux density distribution result of the rod in the tower window angle steel model is obtained by performing finite element magnetic field simulation calculation.
In one embodiment of the present invention, in the step 2, in order to fix the analog magnetic core rod 7 on the wine glass tower 1 of the ultra-high voltage ac transmission line for a long time and ensure a good energy-taking effect, the K-shaped crank arm includes a first support arm and a second support arm, one end of the first support arm is fixed with one end of the second support arm, a certain included angle is formed between the first support arm and the second support arm, and two ends of the analog magnetic core rod 7 are respectively fixed on the first support arm and the second support arm, so that the analog magnetic core rod is shorted on the K-shaped crank arm in parallel.
In the step 4, two analog magnetic conductive sheets 6 are respectively attached to the first support arm and the second support arm.
In one embodiment of the present invention, in step 3, the cross-sectional area, length, number of turns of the wire around which the coil is wound, and distance from the intermediate phase power transmission wire are adjusted to simulate, and a scheme of obtaining the maximum magnetic flux density of the simulated magnetic core rod 7 is preferable.
The said method according to B p1 Calculating theoretical output voltage U of external coil of analog magnetic core rod 7 1 The specific method of (a) is as follows:
U 1 ＝2πf×B p1 ×S×N
wherein f is the working frequency of the alternating current transmission line, S is the cross-sectional area of the analog magnetic core rod 7, and N is the number of turns of the conducting wire of the magnetic core coil wound by the analog magnetic core rod 7.
In the embodiment of the invention, through a plurality of groups of experiments, the simulated magnetic core rod 7 is 5m away from the intermediate phase lead, the relative magnetic conductivity of the simulated magnetic core rod 7 is 10000, the length of the simulated magnetic core rod 7 is not more than 1 meter, the cross section of the simulated magnetic core rod 7 is rectangular, and the size of the cross section of the magnetic simulated magnetic core rod 7 is not limited but is preferably 30mm multiplied by 10mm.
Therefore, on a wine glass tower which is actually operated, the magnetic core rod 7 is 5m away from the intermediate phase lead, the relative magnetic permeability of the magnetic core rod 7 is 10000, the length of the magnetic core rod 7 is not more than 1 m, the cross section of the magnetic core rod 7 is rectangular, and the cross section size of the pseudo core rod 7 is not limited but is preferably 30mm×10mm.
In one embodiment of the present invention, in step 4, the cross-sectional width, length, and thickness of the simulated magnetic conductive sheet 6 are adjusted to simulate, and the scheme of obtaining the maximum magnetic flux density variation of the simulated magnetic core rod 7 is the preferred scheme;
the said method according to B p2 Calculating theoretical output voltage U of external coil of analog magnetic core rod 7 2 The specific method of (a) is as follows:
U 2 ＝2πf×B p2 ×S×N
wherein f is the working frequency of the alternating current transmission line, S is the cross-sectional area of the analog magnetic core rod 7, and N is the number of turns of the conducting wire of the magnetic core coil wound by the analog magnetic core rod 7.
In the embodiment of the invention, through a plurality of groups of tests, the length of the simulated magnetic conduction sheet 6 is 1.5m, the simulated magnetic conduction sheet can be suitable for most steel structure rods on a tower window of the wine cup tower 1, the thickness is 2mm, the optimal size is obtained through testing the effect of the thickness from 0.5mm to 3mm, the energy taking enhancement effect between 0.5mm and 2mm is found to be continuously increased, but the increasing trend of the energy taking effect is not obvious along with the increase of the thickness after 2mm, namely the increase of the thickness only brings about cost increase, but the actual effect is almost the same as the thickness of 2mm, and therefore, the thickness is preferably 2mm.
Therefore, on a wine glass tower which is actually operated, the length of the magnetic conduction sheet 6 is 1.5m, the thickness is 2mm, two ends of the magnetic core rod 7 are respectively contacted with one ends of the two magnetic conduction sheets 6, the length of the magnetic conduction sheet 6 is 1.5m, and the thickness of the magnetic conduction sheet 6 is 2mm.
Wherein, in order to increase the energy taking effect, the magnetic core rod 7 and the magnetic conduction sheet 6 are made of high magnetic conductivity materials, and the materials of the magnetic core rod 7 and the magnetic conduction sheet 6 include but are not limited to silicon steel sheets, permalloy and ferrite.
In the embodiment of the invention, the number of turns of the wires of the magnetic core coil wound outside the magnetic core rod 7 is 10000 turns, the wires are enameled wires with the diameter of 0.5mm, the magnetic core coil is wound in layers, each layer is wound by 1000 turns, and the total number of the layers is 10, so that the energy taking effect is optimal.
The invention also provides a magnetic field energy taking enhancing device of the wine glass tower of the ultra-high voltage alternating current transmission line, which comprises the following components:
the magnetic core rod 7 is externally wound with a magnetic core coil, is arranged on the wine glass tower 1 of the ultra-high voltage alternating current transmission line, and is connected in parallel and short-circuited at the first K-shaped crank arm connecting part 3, the second K-shaped crank arm connecting part 4 or the bottom cross arm connecting part 5 of the tower window;
the magnetic conduction sheet 6 is attached to the surface of the angle steel rod piece 11 and used for enhancing the online energy taking effect;
the magnetic flux density of the first K-shaped crank arm connecting part 3, the second K-shaped crank arm connecting part 4 or the bottom cross arm connecting part 5 of the tower window is compared, the position with the largest magnetic flux density result is taken as the target installation position of the magnetic core rod 7, the two ends of the magnetic core rod 7 are fixed on the two side angle steel rod pieces of the target installation position, the two side angle steel rod pieces 11 of the target installation position of the magnetic core rod 7 are respectively attached to the magnetic conduction thin sheet 6, and one end of the magnetic conduction thin sheet 6 is in contact with the magnetic core rod 7.
In summary, the method and the device for enhancing the magnetic field energy taking performance of the wine glass tower of the ultra-high voltage alternating current transmission line can effectively enhance the magnetic field energy taking performance of the tower window angle steel rod piece 11 of the wine glass tower 1 of the ultra-high voltage alternating current transmission line.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (10)
1. The method for enhancing the magnetic field energy taking of the wine glass tower of the ultra-high voltage alternating current transmission line is characterized by comprising the following steps of:
step 1, establishing a three-dimensional finite element model according to structural parameters of a wine glass tower of an ultrahigh voltage alternating current transmission line, wherein the finite element model comprises a three-phase transmission wire and a tower window arranged around an intermediate phase transmission wire, and the tower window comprises a first K-shaped crank arm connecting part, a second K-shaped crank arm connecting part and a bottom cross arm connecting part;
step 2, obtaining the magnetic flux density of the first K-shaped crank arm connecting part, the second K-shaped crank arm connecting part and the bottom cross arm connecting part through simulation calculation, and taking the part with the largest magnetic flux density result as the target installation position of the simulation magnetic core rod;
step 3, parallelly connecting a short-circuit simulation magnetic core rod at a target installation position in the finite element model, and setting the relative magnetic permeability of the simulation magnetic core rod according to the material property of the simulation magnetic core rod;
step 4, respectively setting and attaching simulated magnetic conduction sheets on the surfaces of angle steel rod pieces on two sides of a target installation position in a finite element model, setting the relative magnetic permeability of the simulated magnetic conduction sheets according to the material properties of the simulated magnetic conduction sheets in the finite element model, and performing simulation calculation to obtain the magnetic flux density of a simulated magnetic core rod at the target installation position;
and 5, manufacturing a magnetic core rod and a magnetic conduction sheet which are actually used according to the simulated magnetic core rod and the simulated magnetic conduction sheet, winding the magnetic core rod around a magnetic core coil, shorting the magnetic core rod in parallel to a target installation position on an actually operated wine glass tower, attaching the magnetic conduction sheet on the surfaces of angle steel rod pieces on two sides of the target installation position, and acquiring theoretical output voltage according to the magnetic flux density of the simulated magnetic core rod.
2. The method for enhancing the magnetic field energy taking of the wine glass tower of the ultra-high voltage alternating current transmission line according to claim 1, wherein the method comprises the following steps:
in the finite element model in the step 1, the transmission conductor material is set to be aluminum or copper, surrounding media are set to be air, the solving boundary area is set to be 4-6 times of the model size, and current values of all phases are loaded according to the current flowing direction of the three-phase transmission conductor.
3. The method for enhancing the magnetic field energy taking of the wine glass tower of the ultra-high voltage alternating current transmission line according to claim 1, wherein the method comprises the following steps:
in the step 2, the relative permeability of the tower window is set according to the model of the main material used by the tower window.
4. The method for enhancing the magnetic field energy taking of the wine glass tower of the ultra-high voltage alternating current transmission line according to claim 1, wherein the method comprises the following steps:
in the step 1, the connection part of the first K-shaped crank arm, the connection part of the second K-shaped crank arm and the connection part of the bottom cross arm all comprise a first support arm and a second support arm which are made of angle steel rod pieces, one end of the first support arm is fixed with one end of the second support arm, a certain included angle is formed between the first support arm and the second support arm, and two ends of the magnetic core rod are respectively fixed on the first support arm and the second support arm;
in the step 4, two pieces of analog magnetic conductive sheets are respectively attached to the first support arm and the second support arm.
5. The method for enhancing the magnetic field energy taking of the wine glass tower of the ultra-high voltage alternating current transmission line according to claim 1, wherein the method comprises the following steps:
in step 3, the cross-sectional area, length, number of turns of the wire around which the coil is wound, and distance from the intermediate phase power transmission wire are adjusted to simulate, and the scheme of maximum magnetic flux density of the simulated magnetic core rod is taken as a preferable scheme.
6. The method for enhancing the magnetic field energy taking of the wine glass tower of the ultra-high voltage alternating current transmission line according to claim 1, wherein the method comprises the following steps:
in step 4, the section width, length and thickness of the simulated magnetic conductive sheet are adjusted to simulate, and the scheme of maximum magnetic flux density of the simulated magnetic core rod is taken as a preferable scheme.
7. The method for enhancing the magnetic field energy taking of the wine glass tower of the ultra-high voltage alternating current transmission line according to claim 1, wherein the method comprises the following steps:
in step 5, the materials of the magnetic core rod and the magnetic conductive sheet include, but are not limited to, silicon steel sheet, permalloy, ferrite.
8. The method for enhancing the magnetic field energy taking of the wine glass tower of the ultra-high voltage alternating current transmission line according to claim 1, wherein the method comprises the following steps:
in the step 5, the magnetic core rod is 5m away from the intermediate phase transmission wire, the relative magnetic conductivity of the magnetic core rod is 10000, the length of the magnetic core rod is not more than 1 m, the cross section of the magnetic core rod is rectangular, the cross section of the magnetic core rod is 30mm multiplied by 10mm, two ends of the magnetic core rod are respectively contacted with one ends of two magnetic conduction shifting sheets, the length of a magnetic conduction sheet is 1.5m, and the thickness of the magnetic conduction sheet is 2mm.
9. The method for enhancing the magnetic field energy taking of the wine glass tower of the ultra-high voltage alternating current transmission line according to claim 1, wherein the method comprises the following steps:
in the step 5, the number of turns of the wires of the magnetic core coil wound outside the magnetic core rod is 10000, the wires are enameled wires with the diameter of 0.5mm, the magnetic core coil is wound in layers, each layer is wound in 1000 turns, and 10 layers are wound in total.
10. The utility model provides an extra-high voltage alternating current transmission line wineglass tower magnetic field energy taking reinforcing apparatus which characterized in that includes:
the magnetic core rod is externally wound with a magnetic core coil, is arranged on a wine glass tower of the ultra-high voltage alternating current transmission line, and is connected in parallel and short-circuited at the joint of a first K-shaped crank arm, the joint of a second K-shaped crank arm or the joint of a bottom cross arm of the tower window;
the magnetic conduction sheet is attached to the surface of the angle steel rod piece;
and comparing the magnetic flux density of the first K-shaped crank arm connecting part, the second K-shaped crank arm connecting part and the bottom cross arm connecting part of the tower window, taking the part with the largest magnetic flux density result as the target installation position of the magnetic core rod, and attaching the magnetic conduction sheet to the angle steel rod pieces on the two sides of the target installation position of the magnetic core rod.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117477807A (en) * | 2023-12-27 | 2024-01-30 | 清华四川能源互联网研究院 | Wireless energy transmission device packaged by hard composite insulating material and net hanging method thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110221437A1 (en) * | 2010-03-12 | 2011-09-15 | Stockum Frank R | Wideband transducer for measuring a broad range of currents in high voltage conductors |
| US20120013292A1 (en) * | 2009-12-04 | 2012-01-19 | University Of South Carolina | Non-Intrusive Energy Harvesting Systems and Methods |
| CN104076223A (en) * | 2014-07-10 | 2014-10-01 | 李�禾 | Electric transmission line large-current magnetic induction energy-extraction simulation test method and test coil thereof |
| CN107908846A (en) * | 2017-11-07 | 2018-04-13 | 武汉大学 | A kind of magnetic field analytical method of magnetic resonance type wireless power technology in high-voltage electric power circuit monitoring |
| US20180233277A1 (en) * | 2015-08-03 | 2018-08-16 | University Of Houston System | Wireless power transfer systems and methods along a pipe using ferrite materials |
| CN109817437A (en) * | 2019-01-25 | 2019-05-28 | 南京师范大学 | A kind of the line influence energy taking device and its configuration method of multi-target optimal design |
| CN114123535A (en) * | 2021-11-24 | 2022-03-01 | 国网江苏省电力有限公司检修分公司 | Wireless power transmission coupling mechanism for on-line monitoring equipment on extra-high voltage transmission line |
| CN115149663A (en) * | 2022-06-14 | 2022-10-04 | 国网江苏省电力有限公司超高压分公司 | Wireless power transmission coupling mechanism on high-voltage line insulator and manufacturing method |
| CN115967190A (en) * | 2022-12-15 | 2023-04-14 | 南京师范大学 | Design method of non-hoop vertical magnetic field induction energy-taking device and energy-supplying system |
-
2023
- 2023-04-26 CN CN202310462159.4A patent/CN116566076B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120013292A1 (en) * | 2009-12-04 | 2012-01-19 | University Of South Carolina | Non-Intrusive Energy Harvesting Systems and Methods |
| US20110221437A1 (en) * | 2010-03-12 | 2011-09-15 | Stockum Frank R | Wideband transducer for measuring a broad range of currents in high voltage conductors |
| CN104076223A (en) * | 2014-07-10 | 2014-10-01 | 李�禾 | Electric transmission line large-current magnetic induction energy-extraction simulation test method and test coil thereof |
| US20180233277A1 (en) * | 2015-08-03 | 2018-08-16 | University Of Houston System | Wireless power transfer systems and methods along a pipe using ferrite materials |
| CN107908846A (en) * | 2017-11-07 | 2018-04-13 | 武汉大学 | A kind of magnetic field analytical method of magnetic resonance type wireless power technology in high-voltage electric power circuit monitoring |
| CN109817437A (en) * | 2019-01-25 | 2019-05-28 | 南京师范大学 | A kind of the line influence energy taking device and its configuration method of multi-target optimal design |
| CN114123535A (en) * | 2021-11-24 | 2022-03-01 | 国网江苏省电力有限公司检修分公司 | Wireless power transmission coupling mechanism for on-line monitoring equipment on extra-high voltage transmission line |
| CN115149663A (en) * | 2022-06-14 | 2022-10-04 | 国网江苏省电力有限公司超高压分公司 | Wireless power transmission coupling mechanism on high-voltage line insulator and manufacturing method |
| CN115967190A (en) * | 2022-12-15 | 2023-04-14 | 南京师范大学 | Design method of non-hoop vertical magnetic field induction energy-taking device and energy-supplying system |
Non-Patent Citations (1)
| Title |
|---|
| 唐波;朱建雄;方书博;张弓达;张瑞;: "超高压交流输电线酒杯型塔塔窗内部磁场测量与仿真", 中国电力, vol. 47, no. 11, pages 60 - 64 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117477807A (en) * | 2023-12-27 | 2024-01-30 | 清华四川能源互联网研究院 | Wireless energy transmission device packaged by hard composite insulating material and net hanging method thereof |
| CN117477807B (en) * | 2023-12-27 | 2024-03-22 | 清华四川能源互联网研究院 | Wireless energy transmission device packaged by hard composite insulating material and net hanging method thereof |
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