A positioning method and device for the installation pitch diameter of a dry-type air-core reactor

Abstract

The present application discloses a positioning method and device for the installation pitch diameter of a dry-type air-core reactor. The method includes establishing a coordinate system for the reactor coil, with the origin of the coordinate system being the center of the reactor coil and the origin setting coordinate axes; cutting the reactor coil with one of the coordinate axes as a reference to obtain parameter information enclosed under the coordinate axis; and calculating the moment information of the enclosure according to the parameter information to obtain the positioning information of the installation pitch diameter. The technical solution provided by the present application establishes a coordinate system for the reactor coil, divides the air-core reactor with one coordinate axis in the coordinate system as a reference, confirms the parameter information of the enclosure obtained after division, calculates the moment information of the enclosure relative to the origin of the coordinate system, and calculates the positioning information of the installation pitch diameter according to the moment information, avoiding the situation that the post insulator bears a part of the bending moment under its own weight due to unreasonable installation pitch diameter, enabling the post insulator to bear only compressive load as much as possible, and improving the stability of the entire support system.

Description

Technical Field

[0001] The present invention relates to a positioning method and device for the installation pitch diameter of a dry-type air-core reactor, belonging to the technical field of reactors. Background Art

[0002] Dry-type air-core reactors have many advantages such as simple structure, good inductance linearity, simple operation and maintenance, and good mechanical properties. They are widely used in converter stations and substations and are key equipment for the normal and stable operation of ultra-high voltage power grids. A dry-type air-core reactor mainly consists of three parts: a structural member, a post insulator, and a coil. Specifically, the support insulator often adopts a columnar structure, with one end fixed to the bottom of the reactor coil body and the other end fixed to a bearing member, such as a base or a steel post, etc. Among them, the connection points of the post insulator and the reactor are determined by calculating the installation pitch diameter to determine the number and position of the connection points.

[0003] However, there are also certain problems in the link of confirming the installation pitch diameter. The existing technology often calculates the installation pitch diameter based on the difference between the inner diameter and the outer diameter of the reactor coil and according to the actual empirical value constant. However, this calculation method is too rough, so it often leads to a large deviation between the installation pitch calculated based on this result and the actual center of gravity position of the reactor coil. Furthermore, it may cause the post insulator to bear a large bending moment under its own weight condition, reducing the seismic performance of the reactor support system. Summary of the Invention

[0004] Therefore, the purpose of the present invention is to provide a positioning method and device for the installation pitch diameter of a dry-type air-core reactor to position the installation pitch diameter of the post insulator, making the force of its support system more reasonable and uniform.

[0005] To achieve the above purpose, on the one hand, the present invention provides a positioning method for the installation pitch diameter of a dry-type air-core reactor, including:

[0006] Establish a coordinate system for the reactor coil, with the center of the reactor coil as the origin, and there are mutually perpendicular coordinate axes parallel to the plane of the reactor coil at the origin;

[0007] Cut the reactor coil with one of the coordinate axes as a reference to obtain the parameter information enclosed by the coordinate axis;

[0008] According to the parameter information, calculate the moment information of each envelope of the reactor coil to obtain the positioning information of the installation pitch diameter.

[0009] Furthermore, the coordinate system also includes a vertical coordinate axis perpendicular to the plane of the reactor.

[0010] Furthermore, obtaining the parameter information enclosed by the coordinate axis specifically includes:

[0011] The reactor coil after tiling and cutting is obtained to get a plurality of stacked envelopes;

[0012] Obtain the coordinate information of the inner and outer diameters of each envelope and the quantity information of the envelopes.

[0013] Furthermore, the parameter information further includes the height information and density information of the reactor coil.

[0014] Furthermore, calculate the moment information of the envelopes, including:

[0015] g

[0016] where represents the moment information; H represents the height information of the reactor coil; represents the density information of the reactor coil; , respectively represent the coordinate information of the inner and outer diameters of each envelope; i represents the quantity information of the envelopes; g represents the acceleration due to gravity.

[0017] Furthermore, the calculation relationship between the positioning information and the moment information is:

[0018]

[0019] where ;

[0020] g.

[0021] In a second aspect, the present invention also provides a positioning device for the installation pitch diameter of a dry-type air-core reactor, applying the positioning method provided in the first aspect, including:

[0022] A coordinate system establishment module, configured to establish a coordinate system for the reactor coil, with the center of the reactor coil as the origin, and the origin is provided with coordinate axes perpendicular to each other and parallel to the plane of the reactor coil;

[0023] A parameter information acquisition module, configured to cut the reactor coil with one of the coordinate axes as a reference to obtain the parameter information of the envelopes under the coordinate axes;

[0024] A positioning information acquisition module, configured to calculate the moment information of each envelope of the reactor coil according to the parameter information to obtain the positioning information of the installation pitch diameter.

[0025] Furthermore, the parameter information acquisition module is configured to perform the following operations:

[0026] Tile and cut the reactor coil to obtain a plurality of stacked envelopes;

[0027] Obtain the coordinate information of the inner and outer diameters of each envelope of the coil and the information on the number of envelopes.

[0028] Furthermore, the parameter information also includes the height information and density information of the coil.

[0029] With the above technical solution, a positioning method and device for the installation pitch diameter of a dry-type air-core reactor provided by an embodiment of the present invention establish a coordinate system for the reactor coil, divide the air-core reactor with one of the mutually perpendicular axes in the coordinate system as a reference, confirm the parameter information of the envelopes obtained after division, calculate the moment information of the envelopes relative to the origin of the coordinate system based on this parameter information, and finally calculate the positioning information of the installation pitch diameter according to the moment information, so that the post insulator is installed at the position of the above installation pitch diameter, which is beneficial to avoiding unreasonable stress on the support post insulator and ensuring the stable installation of the dry-type air-core reactor. Description of the Drawings

[0030] Figure 1 It is a flowchart of a positioning method for the installation pitch diameter of a dry-type air-core reactor provided by an embodiment of the present invention;

[0031] Figure 2a It is a schematic diagram of the reactor coil after being cut in a positioning method for the installation pitch diameter of a dry-type air-core reactor provided by an embodiment of the present invention;

[0032] Figure 2b It is a schematic diagram of stacked envelopes in a positioning method for the installation pitch diameter of a dry-type air-core reactor provided by an embodiment of the present invention;

[0033] Figure 3 It is a flowchart of obtaining parameter information in a positioning method for the installation pitch diameter of a dry-type air-core reactor provided by an embodiment of the present invention;

[0034] Figure 4 It is a schematic structural diagram of a positioning device for the installation pitch diameter of a dry-type air-core reactor provided by an embodiment of the present invention;

[0035] Figure 5 It is a schematic diagram of the principle of solving the installation pitch diameter of a positioning device for the installation pitch diameter of a dry-type air-core reactor provided by an embodiment of the present invention. Detailed Embodiments

[0036] The present invention will be further described in detail below with reference to the drawings and specific embodiments. Usually, the air-core reactor and the corresponding support components include a reactor coil, a post insulator, a structural member, etc. Therefore, it is necessary to accurately calculate the installation pitch diameter to avoid excessive bending moment that the support post insulator may bear under its own weight and ensure the stable installation of the air-core reactor.

[0037] Embodiment 1

[0038] As Figure 1 shown, the present invention provides a positioning method for the installation pitch diameter of a dry-type air-core reactor, including:

[0039] S10: Establish a coordinate system for the reactor coil. Preferably, a rectangular coordinate system is adopted. The coordinate system takes the center of the reactor coil as the origin, and the origin is provided with mutually perpendicular coordinate axes parallel to the plane of the reactor coil. For example, the center of the reactor coil is point O, and the mutually perpendicular coordinate axes in the plane of the reactor coil are the X-axis and the Z-axis, and the formed plane is the XOZ plane.

[0040] It should be added here that the above situation is a two-dimensional coordinate system. If a three-dimensional coordinate system is adopted, a vertical coordinate axis (Y-axis) perpendicular to the plane of the reactor needs to be added. The vertical coordinate axis extends upward or downward in the vertical plane with the origin as the reference.

[0041] S20: Cut the reactor coil based on one of the coordinate axes to obtain the parameter information encapsulated under the coordinate axis; as Figure 3 shown, specifically including:

[0042] S21: Flatten the cut reactor coil to obtain a plurality of stacked encapsulations; as Figure 2a and Figure 2b shown. For example, cut along the Y-axis direction with the X-axis or the Z-axis as the reference. The cut reactor coil is 1 / 2 of the original, and the plurality of stacked encapsulations are in a trapezoidal multi-layer structure that is axisymmetric (such as Z-axis symmetry).

[0043] S22: Obtain the inner and outer diameter coordinate information of each encapsulation and the number information of the encapsulations. If the encapsulation is axisymmetric with respect to the Z-axis in the aforementioned coordinate system, then respectively obtain the vertical distance a i from the innermost encapsulation (inner diameter of the encapsulation) to the origin, the vertical distance b i from the outermost encapsulation (outer diameter of the encapsulation) to the origin, and the number i of the encapsulations between the innermost encapsulation and the outermost encapsulation.

[0044] It should be added here that the aforementioned parameter information also includes the height information H and density information of the reactor coil , and for different numbers of encapsulations, there are also differences in the density between the encapsulation layers.

[0045] S30: Calculate the torque information of each encapsulation of the reactor coil according to the parameter information to obtain the positioning information of the installation pitch diameter. Specifically, the calculation formula for the torque information of the encapsulation is as follows:

[0046] g

[0047] where represents torque information; H represents the height information of the reactor coil; represents the density information of the reactor coil; 、 respectively represent the coordinate information of the inner and outer diameters of each envelope; i represents the quantity information of the envelopes, and g represents the acceleration due to gravity; that is, the torque information corresponding to each envelope of each layer needs to be calculated. For example, if the number of envelopes is 5, the corresponding torque information is - 。

[0048] By performing an accumulation operation on all the torque information, the total torque information is obtained ,namely:

[0049] ;

[0050] Furthermore, the calculation formula for the radius value of the positioning information, that is, the installation pitch diameter, is as follows:

[0051]

[0052] Among them, g represents the support constraint reaction force, which is equal to the gravity of the intercepted part of the reactor coil.

[0053] And if it is determined that the density between the envelope layers is the same, this may be because the thickness values of each envelope are relatively small, as Figure 5 shown, and then the above calculation formula for the radius value can be simplified to:

[0054]

[0055] A method and device for positioning the installation pitch diameter of a dry-type air-core reactor provided by an embodiment of the present invention. This method establishes a coordinate system for the reactor coil, divides the air-core reactor with one of the mutually perpendicular axes in the coordinate system as a reference, confirms the parameter information of the envelopes obtained after division, calculates the torque information of the envelopes relative to the origin of the coordinate system based on this parameter information, and finally calculates the positioning information of the installation pitch diameter according to the torque information, so that the post insulator is installed at the position of the above installation pitch diameter, which is beneficial to avoiding unreasonable stress on the support post insulator and ensuring the stable installation of the dry-type air-core reactor.

[0056] Embodiment 2

[0057] On the basis of Embodiment 1, an embodiment of the present invention provides a device for positioning the installation pitch diameter of a dry-type air-core reactor, as Figure 4 shown, including:

[0058] A coordinate system establishment module 01 is used to establish a coordinate system for the reactor coil. The coordinate system takes the center of the reactor coil as the origin, and the origin is provided with mutually perpendicular coordinate axes parallel to the plane of the reactor coil. In addition, the coordinate system also includes a vertical coordinate axis perpendicular to the plane of the reactor.

[0059] A parameter information acquisition module 02 is used to cut the reactor coil with one of the coordinate axes as a reference to obtain the parameter information enclosed under the coordinate axis. The parameter information acquisition module 02 is configured to perform the following operations:

[0060] Tile the cut reactor coil to obtain a plurality of stacked enclosures.

[0061] Obtain the coordinate information of the inner and outer diameters of each enclosure and the quantity information of the enclosures. In addition, the parameter information also includes the height information and density information of the enclosures.

[0062] A positioning information acquisition module 03 is used to calculate the torque information of each enclosure of the reactor coil according to the parameter information to obtain the positioning information of the installation pitch diameter.

[0063] Calculating the torque information of the enclosure includes:

[0064] g

[0065] where represents the torque information; H represents the height information of the reactor coil; represents the density information of the reactor coil; 、 respectively represent the coordinate information of the inner and outer diameters of each enclosure; i represents the quantity information of the enclosures.

[0066] The calculation relationship between the positioning information and the torque information is:

[0067]

[0068] where ;

[0069] g.

[0070] The positioning device for the installation pitch diameter of the dry-type air-core reactor provided by the embodiment of the present invention adopts the same technical concept as the positioning method provided by the foregoing embodiment and achieves the same technical effect, which will not be elaborated here.

[0071] Obviously, the above embodiments are merely examples for clear illustration and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation manners here. And the obvious changes or modifications derived therefrom still fall within the protection scope of the present invention.

Claims

1. A positioning method for the installation pitch diameter of a dry-type air-core reactor, characterized in that Including: Establish a coordinate system for the reactor coil, with the origin of the coordinate system being the center of the reactor coil, and perpendicular axes parallel to the plane of the reactor coil being provided at the origin; Cut the reactor coil with one of the axes as a reference to obtain parameter information enclosed under the axis, including: Lay out the cut reactor coil flat to obtain multiple stacked enclosures; Obtain the coordinate information of the inner and outer diameters of each enclosure and the quantity information of the enclosures. The parameter information also includes the height information and density information of the reactor coil; According to the parameter information, calculate the torque information of each enclosure of the reactor coil to obtain the positioning information of the installation pitch diameter, including: g wherein represents the torque information; H represents the height information of the reactor coil; represents the density information of the reactor coil; and respectively represent the coordinate information of the inner and outer diameters of each of the encapsulations; i represents the quantity information of the encapsulations; g represents the acceleration due to gravity; The calculation relationship between the positioning information and the torque information is: Among them ; g。 2. The positioning method of the installation pitch diameter of the dry-type air-core reactor according to claim 1, characterized in that: The coordinate system further includes a vertical axis perpendicular to the plane of the reactor.

3. A positioning device for the installation pitch diameter of a dry-type air-core reactor, applying the positioning method described in any one of claims 1-2, characterized in that, Including: A coordinate system establishment module for establishing a coordinate system for the reactor coil, with the origin of the coordinate system being the center of the reactor coil, and perpendicular axes parallel to the plane of the reactor coil being provided at the origin; A parameter information acquisition module for cutting the reactor coil with one of the axes as a reference to obtain parameter information enclosed under the axis; A positioning information acquisition module for calculating the torque information of each enclosure of the reactor coil according to the parameter information to obtain the positioning information of the installation pitch diameter.

4. The positioning device for the installation pitch diameter of the dry-type air-core reactor according to claim 3, characterized in that, The parameter information acquisition module is configured to perform the following operations: Lay out the cut reactor coil flat to obtain multiple stacked enclosures; Obtain the coordinate information of the inner and outer diameters of each enclosure and the quantity information of the enclosures.

5. The positioning device for the installation pitch diameter of the dry-type air-core reactor according to claim 4, characterized in that, The parameter information also includes the height information and density information of the coil.

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