Method and device for positioning installation pitch diameter of dry-type air-core reactor

Abstract

The invention discloses a positioning method and device for the installation pitch diameter of a dry-type air-core reactor, and the method comprises the steps: building a coordinate system related to a reactor coil, taking the circle center of the reactor coil as an original point of the coordinate system, and setting a coordinate axis at the original point; cutting the reactor coil by taking one coordinate axis as a reference to obtain parameter information encapsulated under the coordinate axis; and according to the parameter information, torque information of the encapsulation is calculated, and positioning information of the installation pitch diameter is obtained. According to the technical scheme provided by the invention, the coordinate system about the reactor coil is established, one coordinate axis in the coordinate system is taken as a reference to segment the air-core reactor, parameter information confirmation is carried out on the envelope obtained after segmentation, the torque information of the envelope relative to the origin of the coordinate system is calculated, and the positioning information of the installation pitch diameter is calculated according to the torque information. The supporting insulator is prevented from bearing a part of bending moment in a self-weight state due to unreasonable mounting pitch diameter, so that the supporting insulator only bears compressive load as far as possible, and the stability of the whole supporting system is improved.

Description

Technical Field

[0001] The invention relates to a method and a device for positioning 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 UHV power grids. Dry-type air-core reactors are mainly composed of three parts: structural parts, support insulators, and coils. Specifically, the support insulators often adopt a columnar structure, one end of which is fixed to the bottom of the reactor coil body, and the other end is fixed to the bearing component, such as a base or steel support. The number and position of the connection points of the support insulators and reactors are determined by calculating the installation pitch diameter.

[0003] However, there are also some problems in the process 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 the actual empirical value constant. However, this calculation method is too rough, so it often leads to a large deviation between the installation pitch based on this calculation result and the actual center of gravity position of the reactor coil, which may cause the support insulator to bear a large bending moment under the deadweight condition, reducing the seismic performance of the reactor support system. Summary of the invention

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

[0005] In order to achieve the above object, the present invention provides a method for positioning the installation pitch diameter of a dry-type air-core reactor, comprising:

[0006] A coordinate system for the reactor coil is established, wherein the coordinate system takes the center of the reactor coil as the origin, and the origin is provided with coordinate axes which are perpendicular to each other and parallel to the plane to which the reactor coil belongs;

[0007] Cut the reactor coil based on one of the coordinate axes to obtain parameter information enclosed under the coordinate axis;

[0008] According to the parameter information, the torque information of each package of the reactor coil is calculated 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 to which the reactor belongs.

[0010] Furthermore, the parameter information enclosed in the coordinate axis is obtained, including:

[0011] Laying out the cut reactor coils to obtain a plurality of stacked packages;

[0012] Obtain the coordinate information of the inner and outer diameters of each package and the number of packages.

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

[0014] Furthermore, the encapsulated moment information is calculated, including:

[0015]

[0016] Among them, M i represents torque information; H represents the height information of the reactor coil; ρ i Indicates the density information of the reactor coil; a i , b i They respectively represent the coordinate information of the inner and outer diameters of each package; i represents the number of packages.

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

[0018] M F =G×X F

[0019] Among them, M F =M 1 +M 2 +M 3 +…+M i ;

[0020]

[0021] In a second aspect, the present invention further 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, comprising:

[0022] A coordinate system establishment module 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 coordinate axes that are perpendicular to each other and parallel to the plane to which the reactor coil belongs;

[0023] A parameter information acquisition module, used to cut the reactor coil based on a coordinate axis as a reference to obtain parameter information enclosed under the coordinate axis;

[0024] The positioning information acquisition module is used to calculate the torque information of each package of the reactor coil according to the parameter information and obtain the positioning information of the installation pitch diameter.

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

[0026] Laying out the cut reactor coils to obtain a plurality of stacked packages;

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

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

[0029] By adopting the above technical scheme, an embodiment of the present invention provides a method and device for positioning the installation pitch diameter of a dry-type air-core reactor. A coordinate system for the reactor coil is established, and the air-core reactor is divided with an axis perpendicular to each other in the coordinate system as a reference. The parameter information of the package obtained after the division is confirmed, and the torque information of the package relative to the origin of the coordinate system is calculated based on the parameter information. Finally, the positioning information of the installation pitch diameter is calculated based on the torque information, so that the support insulator is installed at the position of the above-mentioned installation pitch diameter, which is beneficial to avoid unreasonable force on the support column insulator and ensure the stable installation of the dry-type air-core reactor. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A flow chart of a method for positioning a node diameter of a dry-type air-core reactor provided in an embodiment of the present invention;

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

[0032] Figure 2b A schematic diagram of stacking and encapsulation in a method for positioning a node diameter of a dry-type air-core reactor provided by an embodiment of the present invention;

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

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

[0035] Figure 5 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 in an embodiment of the present invention. DETAILED DESCRIPTION

[0036] The present invention is further described in detail below through the accompanying drawings and specific implementation methods. Generally, the air-core reactor and the corresponding supporting components include the reactor coil, the support insulator, the structural parts, etc. Therefore, it is necessary to accurately calculate the installation pitch diameter to avoid the support column insulator from being subjected to excessive bending moment under its own weight, so as to ensure the stable installation of the air-core reactor.

[0037] Embodiment 1

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

[0039] S10: Establish a coordinate system for the reactor coil. The coordinate system preferably adopts a rectangular coordinate system. The coordinate system takes the center of the reactor coil as the origin. The origin is provided with mutually perpendicular coordinate axes parallel to the plane to which the reactor coil belongs. For example, the center of the reactor coil is point O, and the mutually perpendicular coordinate axes in the plane to which the reactor coil belongs are the X-axis and the Z-axis, and the plane formed 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 used, a vertical coordinate axis (Y axis) perpendicular to the plane to which the reactor belongs needs to be added. The vertical coordinate axis is based on the origin and extends upward or downward in the vertical plane.

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

[0042] S21: Laying out the cut reactor coils to obtain a plurality of stacked packages; Figure 2a and Figure 2b As shown, for example, cutting is performed along the Y-axis direction based on the X-axis or the Z-axis, the cut reactor coil is 1 / 2 of the original one, and the stacked multiple packages are in an axisymmetric (such as Z-axis symmetric) trapezoidal multilayer structure.

[0043] S22: Obtain the coordinate information of the inner and outer diameters of each package and the number of packages. The packages are symmetrical with respect to the Z axis in the aforementioned coordinate system, so the vertical distance a from the innermost package (inner diameter of the package) to the origin is obtained respectively. i , the vertical distance b from the outermost envelope (envelope outer diameter) to the origin i , and the number of envelopes i between the innermost envelope and the outermost envelope.

[0044] It should be added here that the aforementioned parameter information also includes the height information H and density information ρ of the reactor coil. For different encapsulation numbers, the density ρ between encapsulation layers will also be different.

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

[0046]

[0047] Among them, Mi represents torque information; H represents the height information of the reactor coil; ρ i Indicates the density information of the reactor coil; a i , b i Respectively represent the coordinate information of the inner and outer diameters of each envelope; i represents the number of envelopes, that is, the torque information corresponding to each layer of envelopes needs to be calculated. For example, if the number of envelopes is 5, the corresponding torque information is M 1 -M 5 .

[0048] By accumulating all the torque information, the total torque information M is obtained. F ,Right now:

[0049] M F =M 1 +M 2 +M 3 +…+M i ;

[0050] The calculation formula of the positioning information, i.e. the radius value of the installation pitch diameter, is as follows:

[0051]

[0052] in, Represents the support restraint reaction force, which is equal to the weight of the intercepted reactor coil portion.

[0053] And if it is assumed that the density between the encapsulation layers is the same, this may be due to the small difference in the thickness values ​​of each encapsulation, such as Figure 5 As shown, the calculation formula of the above radius value can be simplified as follows:

[0054]

[0055] A method and device for positioning the installation pitch diameter of a dry-type air-core reactor provided in an embodiment of the present invention. The method establishes a coordinate system for the reactor coil, and divides the air-core reactor based on an axis perpendicular to each other in the coordinate system as a reference. The parameter information of the envelope obtained after the division is confirmed, and the torque information of the envelope relative to the origin of the coordinate system is calculated based on the parameter information. Finally, the positioning information of the installation pitch diameter is calculated based on the torque information, so that the support insulator is installed at the position of the above-mentioned installation pitch diameter, which is beneficial to avoid unreasonable force on the support column insulator and ensure the stable installation of the dry-type air-core reactor.

[0056] Embodiment 2

[0057] Based on the first embodiment, the present invention provides a positioning device for the installation pitch of a dry-type air-core reactor, such as Figure 4 As shown, including:

[0058] The coordinate system establishment module 01 is used to establish a coordinate system about 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 to which the reactor coil belongs; in addition, the coordinate system also includes a vertical coordinate axis perpendicular to the plane to which the reactor belongs.

[0059] The parameter information acquisition module 02 is used to cut the reactor coil based on a coordinate axis to obtain parameter information enclosed under the coordinate axis; wherein the parameter information acquisition module 02 is configured to perform the following operations:

[0060] Laying out the cut reactor coils to obtain a plurality of stacked packages;

[0061] The coordinate information of the inner and outer diameters of each package and the number of packages are obtained. In addition, the parameter information also includes the height information and density information of the package.

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

[0063] Calculates the envelope's moment information, including:

[0064]

[0065] Among them, M i represents torque information; H represents the height information of the reactor coil; ρ i Indicates the density information of the reactor coil; a i , b i Respectively represent the coordinate information of the inner and outer diameters of each package; i represents the number information of the package.

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

[0067]

[0068] Among them, M F =M 1 +M 2 +M 3 +…+M i ;

[0069]

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

[0071] Obviously, the above embodiments are only examples for clear explanation, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from them are still within the protection scope of the invention.

Claims

1. A method for positioning the installation pitch diameter of a dry-type air-core reactor, characterized in that: include: Establishing a coordinate system for the reactor coil, wherein the coordinate system takes the center of the reactor coil as an origin, and the origin is provided with coordinate axes perpendicular to each other and parallel to the plane to which the reactor coil belongs; Cutting the reactor coil based on one of the coordinate axes to obtain parameter information enclosed under the coordinate axis; The torque information of each package of the reactor coil is calculated according to the parameter information to obtain the positioning information of the installation pitch diameter.

2. The method for positioning the installation pitch diameter of a dry-type air-core reactor according to claim 1, characterized in that: The coordinate system also includes a vertical coordinate axis perpendicular to the plane to which the reactor belongs.

3. The method for positioning the installation pitch diameter of a dry-type air-core reactor according to claim 1, characterized in that: The obtaining of the parameter information encapsulated under the coordinate axis specifically includes: Laying out the reactor coil after cutting to obtain a plurality of stacked packages; The coordinate information of the inner and outer diameters of each of the packages and the quantity information of the packages are obtained.

4. The method for positioning the installation pitch diameter of a dry-type air-core reactor according to claim 3, characterized in that: The parameter information also includes height information and density information of the reactor coil.

5. The method for positioning the installation pitch diameter of a dry-type air-core reactor according to claim 4, characterized in that: The calculating the moment information of the envelope comprises: Among them, M i represents the torque information; H represents the height information of the reactor coil; ρ i Indicates the density information of the reactor coil; a i 、b i Respectively represent the coordinate information of the inner and outer diameters of each of the packages; i represents the quantity information of the packages.

6. The method for positioning the installation pitch diameter of a dry-type air-core reactor according to claim 5, characterized in that: The calculation relationship between the positioning information and the torque information is: Among them, M F =M1+M2+M3+…+M i ; 7. A positioning device for the installation pitch diameter of a dry-type air-core reactor, using the positioning method described in any one of claims 1 to 5, characterized in that: include: A coordinate system establishment module, used to establish a coordinate system for the reactor coil, wherein the coordinate system takes 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 to which the reactor coil belongs; A parameter information acquisition module, used for cutting the reactor coil based on one of the coordinate axes to obtain parameter information enclosed under the coordinate axis; The positioning information acquisition module is used to calculate the torque information of each package of the reactor coil according to the parameter information, and obtain the positioning information of the installation pitch diameter.

8. The positioning device for the installation pitch diameter of a dry-type air-core reactor according to claim 7, characterized in that: The parameter information acquisition module is configured to perform the following operations: Laying out the reactor coil after cutting to obtain a plurality of stacked packages; The coordinate information of the inner and outer diameters of each of the packages and the quantity information of the packages are obtained.

9. The positioning device for the installation pitch diameter of a dry-type air-core reactor according to claim 7, characterized in that: The parameter information also includes height information and density information of the coil.

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