CN109444581B - Testing method and testing device for dry-type air-core reactor - Google Patents
Testing method and testing device for dry-type air-core reactor Download PDFInfo
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- CN109444581B CN109444581B CN201811314629.8A CN201811314629A CN109444581B CN 109444581 B CN109444581 B CN 109444581B CN 201811314629 A CN201811314629 A CN 201811314629A CN 109444581 B CN109444581 B CN 109444581B
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Abstract
The embodiment of the invention provides a test method and a test device of an air reactor, wherein a geometric test model of the reactor is established by acquiring geometric parameters of the reactor, and a performance curve graph of the reactor when a coil of the reactor is in short circuit is obtained by planning the geometric test model and then according to set test parameters, so that the analysis of the reactor is realized, destructive test on the reactor is not needed, the service life and the service efficiency of the reactor can be ensured, the performance of the reactor can be conveniently detected, and the cost is reduced.
Description
Technical Field
The invention relates to the technical field of reactors, in particular to a testing method and a testing device of a dry-type air-core reactor.
Background
Reactors, also called inductors, are electric reactors in which a conductor, when energized, generates a magnetic field in a certain spatial range it occupies, all electric conductors capable of carrying current having inductive properties in the general sense. However, the inductance of the electrified long straight conductor is small, the generated magnetic field is not strong, and the actual reactor is in a form of winding a conducting wire into a solenoid, which is called an air reactor.
The problem of turn-to-turn short circuit of the reactor is an important problem of a power system, the practical use of the reactor is seriously influenced, the current common mode for researching the turn-to-turn short circuit fault detection of the reactor is turn-to-turn insulation detection, but the method of the turn-to-turn insulation detection is destructive test, the use efficiency of the reactor can be reduced, the service life of the reactor can be shortened, and the cost is higher.
Disclosure of Invention
In view of this, the invention provides a method and a device for testing an air reactor, so as to conveniently detect the air reactor under the condition of ensuring the integrity of the air reactor and reduce the cost.
The embodiment of the invention provides a method for testing an air-core reactor, which comprises the following steps:
acquiring geometric parameters of the reactor;
establishing a geometric test model of the reactor based on the geometric parameters;
carrying out grid planning on the geometric test model;
setting test parameters for the geometric test model after the mesh is planed;
and generating a performance curve graph of the reactor when the coil of the reactor is short-circuited based on the test parameters.
Further, the geometric parameters include a coil height, a coil outer diameter and a coil inner diameter of the reactor, and the establishing a geometric test model of the reactor based on the geometric parameters includes:
establishing a two-dimensional plane coordinate system, wherein in the two-dimensional plane coordinate system, a first coordinate axis is along the extension direction of the diameter of the coil of the reactor, and a second coordinate axis is along the extension direction of the height of the coil of the reactor;
determining geometric data representing a geometric figure of a longitudinal section of each turn of the coil of the reactor based on the outer diameter of the coil and the inner diameter of the coil, wherein the geometric data comprises a side length of the geometric figure;
determining coordinates of a center point of each of the geometric figures when displayed in the two-dimensional plane coordinate system based on the coil height;
and generating a geometric test model comprising a plurality of geometric figures in the two-dimensional plane coordinate system based on each central point coordinate and the geometric data, wherein the geometric figures are arranged in a matrix.
Further, the geometric parameters include a coil height, a coil outer diameter and a coil inner diameter of the reactor, and the establishing a geometric test model of the reactor based on the geometric parameters includes:
establishing a three-dimensional space coordinate system, wherein in the three-dimensional space coordinate system, planes where a first coordinate axis and a second coordinate axis are located are parallel to the cross section of the coil of the reactor, and a third coordinate axis extends along the height direction of the coil of the reactor;
determining the position of the midline of each turn of the coil of the reactor in the three-dimensional space coordinate system based on the height of the coil;
determining a rotation point corresponding to each midline based on the position of each midline, wherein the vertical distance between each rotation point and the corresponding midline is a preset distance;
and according to the current flow direction in the coil, rotating each rotating point around the corresponding midline to obtain a multi-turn coil, and generating a geometric test model comprising the multi-turn coil.
Further, the step of performing mesh planing on the geometric test model includes:
determining an air area in an air field where the geometric test model is located and within a preset range around the geometric test model;
and carrying out grid planning on the geometric test model and the air area according to a preset planning rule.
Further, the test parameters include the position and the number of coils in the geometric test model where a short circuit occurs.
Further, after the generating a performance graph of the reactor when the coil of the reactor is short-circuited based on the test parameters, the method includes:
and determining the fault condition of the reactor based on the performance curve graph.
The embodiment of the invention also provides a testing device of the air reactor, which comprises:
the acquisition module is used for acquiring geometric parameters of the reactor;
the establishing module is used for establishing a geometric test model of the reactor based on the geometric parameters;
the planning module is used for carrying out grid planning on the geometric test model;
the setting module is used for setting test parameters for the geometric test model after the mesh is planed;
and the generating module is used for generating a performance curve graph of the reactor when the coil of the reactor is in short circuit based on the test parameters.
Further, the geometric parameters include a coil height, a coil outer diameter and a coil inner diameter of the reactor, and the establishing module includes:
a first establishing unit configured to establish a two-dimensional planar coordinate system in which a first coordinate axis is along an extending direction of a diameter of a coil of the reactor and a second coordinate axis is along an extending direction of a height of the coil of the reactor;
a first determination unit configured to determine geometric data representing a geometric figure of a longitudinal section of each turn of the coil of the reactor based on the coil outer diameter and the coil inner diameter, wherein the geometric data includes a side length of the geometric figure;
a second determining unit, configured to determine, based on the coil height, a center point coordinate of each of the geometric figures when shown in the two-dimensional plane coordinate system;
and the first generating unit is used for generating a geometric test model comprising a plurality of geometric figures in the two-dimensional plane coordinate system based on each central point coordinate and the geometric data, wherein the geometric figures are arranged in a matrix.
Further, the geometric parameters include a coil height, a coil outer diameter and a coil inner diameter of the reactor, and the establishing module includes:
the second establishing unit is used for establishing a three-dimensional space coordinate system, wherein in the three-dimensional space coordinate system, planes where the first coordinate axis and the second coordinate axis are located are parallel to the cross section of the coil of the reactor, and the third coordinate axis extends along the height direction of the coil of the reactor;
a third determining unit, configured to determine, based on the coil height, a position of a center line of each turn of the coil of the reactor in the three-dimensional space coordinate system;
a fourth determining unit, configured to determine a rotation point corresponding to each centerline based on a position of each centerline, where a vertical distance between each rotation point and the corresponding centerline is a preset distance;
and the second generating unit is used for rotating each rotating point around the corresponding midline to obtain a multi-turn coil according to the current flowing direction in the coil, and generating a geometric test model comprising the multi-turn coil.
Further, the planing module comprises:
a fifth determining unit, configured to determine an air region in the air field where the geometric test model is located and within a preset range around the geometric test model;
and the planning unit is used for carrying out grid planning on the geometric test model and the air area according to a preset planning rule.
Further, the test parameters include the position and the number of coils in the geometric test model where a short circuit occurs.
Further, the testing device further comprises:
and the determining module is used for determining the fault condition of the reactor based on the performance curve graph.
An embodiment of the present invention further provides an electronic device, including: the air core reactor testing device comprises a processor, a memory and a bus, wherein the memory stores machine readable instructions executable by the processor, the processor and the memory are communicated through the bus when an electronic device runs, and the machine readable instructions are executed by the processor to execute the steps of the air core reactor testing method.
The embodiment of the invention also provides a computer readable storage medium, which stores a computer program, and the computer program is executed by a processor to execute the steps of the air reactor testing method.
According to the testing method and the testing device of the air-core reactor provided by the embodiment of the invention, the geometric parameters of the reactor are obtained; establishing a geometric test model of the reactor based on the geometric parameters; carrying out grid planning on the geometric test model; setting test parameters for the geometric test model after the mesh is planed; and generating a performance curve graph of the reactor when the coil of the reactor is short-circuited based on the test parameters. Compared with the test method of the air reactor in the prior art, the method has the advantages that the geometric parameters of the reactor are obtained to establish the geometric test model of the reactor, the performance curve diagram of the reactor when the coil of the reactor is in short circuit is obtained through the set test parameters after the geometric test model is planed, the analysis of the reactor is realized, the destructive test of the reactor is not needed, the service life and the service efficiency of the reactor can be ensured, the performance of the reactor can be conveniently detected, and the cost is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a diagram of a system architecture in one possible application scenario;
fig. 2 is a flowchart of a method for testing an air-core reactor according to an embodiment of the present invention;
fig. 3 is a flowchart of a method for testing an air-core reactor according to another embodiment of the present invention;
FIG. 4 is a schematic illustration of when the geometric test model is a two-dimensional model;
fig. 5 is one of structural diagrams of a testing apparatus for an air-core reactor according to an embodiment of the present invention;
fig. 6 is a second structural diagram of a testing apparatus for an air-core reactor according to an embodiment of the present invention;
FIG. 7 is one of the block diagrams of the setup module shown in FIG. 5;
FIG. 8 is a second block diagram of the setup module shown in FIG. 5;
FIG. 9 is a block diagram of the planing module shown in FIG. 5;
fig. 10 is a block diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
First, an application scenario to which the present invention is applicable will be described. The invention can be applied to a power system to analyze and detect the performance condition of the reactor so as to predict the running condition of the reactor in advance and achieve the purpose of fault early warning. Referring to fig. 1, fig. 1 is a system diagram in the application scenario. As shown in fig. 1, the system comprises a test device of the air reactor and the reactor, wherein the test device is connected with the reactor, and various data of the reactor, such as various parameter information of the reactor, can be acquired from the reactor.
According to researches, the current common mode for detecting the turn-to-turn short circuit fault of the reactor is turn-to-turn insulation detection, but the turn-to-turn insulation detection method is a destructive test, can reduce the use efficiency of the reactor, shortens the service life of the reactor, and has higher cost.
Based on the above, the embodiment of the invention provides a test method and a test device for an air reactor, which can ensure the service life and the service efficiency of the reactor without performing destructive tests on the reactor, facilitate the performance detection of the reactor and reduce the cost.
Referring to fig. 2, fig. 2 is a flowchart of a method for testing an air-core reactor according to an embodiment of the present invention. As shown in fig. 2, a method for testing an air-core reactor according to an embodiment of the present invention includes:
In this step, when the testing device needs to test the reactor, the geometric parameters of the reactor can be obtained first.
The reactor may be an air core reactor, in particular a dry air core reactor.
Wherein the geometric parameters comprise the coil height, the coil outer diameter and the coil inner diameter of the reactor.
And 202, establishing a geometric test model of the reactor based on the geometric parameters.
In this step, after obtaining the geometric parameters of the reactor, the testing device may use the geometric parameters to establish a geometric test model of the reactor, so that the geometric test model may be used for testing.
Therefore, the geometric test model is established by using the geometric parameters of the reactor to test, destructive damage to the reactor can be avoided, and the service life and the service efficiency of the reactor are ensured.
And 203, carrying out grid planning on the geometric test model.
In this step, after the geometric test model is established, the test device may perform mesh planing on the geometric test model in order to facilitate testing of the geometric test model.
The mesh planning for the geometric test model can follow a sequence from small to large and from thin to thick, such as planning for a wire in a coil of the reactor and then planning for the coil of the reactor.
Therefore, the calculation of the reactor during detection can be facilitated, the calculation amount of the testing device is reduced, and the calculation time of the testing device is saved.
And 204, setting test parameters for the geometric test model after the grid is planed.
In this step, after the testing device performs mesh planing on the geometric test model, it may set test parameters to be tested for the geometric test model.
The test parameters may be test parameters set by default in the test apparatus, or test parameters corresponding to a received instruction generated by the test apparatus after receiving the instruction input by the inspector.
Wherein the test parameters include the position and number of coils in the geometric test model where a short circuit occurs.
Besides the setting of the test parameters, the test can also set a physical field which needs to test the geometric test model, and if the electromagnetic performance of the reactor needs to be tested, the physical field can be set to be a magnetic field and an electric field.
And step 205, generating a performance curve graph of the reactor when the coil of the reactor is short-circuited based on the test parameters.
In this step, after the testing device sets the testing parameters, the testing device may use the testing parameters to test a performance curve of the reactor when the coil of the reactor is short-circuited.
According to the test method of the air reactor provided by the embodiment of the invention, the geometric parameters of the reactor are obtained; establishing a geometric test model of the reactor based on the geometric parameters; carrying out grid planning on the geometric test model; setting test parameters for the geometric test model after the mesh is planed; and generating a performance curve graph of the reactor when the coil of the reactor is short-circuited based on the test parameters.
Compared with the test method of the air reactor in the prior art, the method has the advantages that the geometric parameters of the reactor are obtained to establish the geometric test model of the reactor, the performance curve diagram of the reactor when the coil of the reactor is in short circuit is obtained through the set test parameters after the geometric test model is planed, the analysis of the reactor is realized, the destructive test of the reactor is not needed, the service life and the service efficiency of the reactor can be ensured, the performance of the reactor can be conveniently detected, and the cost is reduced.
Referring to fig. 3, fig. 3 is a flowchart of a method for testing an air-core reactor according to another embodiment of the present invention. As shown in fig. 3, a method for testing an air-core reactor according to an embodiment of the present invention includes:
and 301, acquiring geometric parameters of the reactor.
And 302, establishing a geometric test model of the reactor based on the geometric parameters.
And 303, carrying out grid planning on the geometric test model.
And step 304, setting test parameters for the geometric test model after the grid is planed.
And 305, generating a performance curve graph of the reactor when the coil of the reactor is short-circuited based on the test parameters.
And step 306, determining the fault condition of the reactor based on the performance curve graph.
In this step, after obtaining a performance graph that can indicate that the coil of the reactor is short-circuited, the testing device may predict the use condition of the reactor according to the performance graph, so as to predict a possible fault condition of the reactor.
The descriptions of step 301 to step 305 may refer to the descriptions of step 201 to step 205, which are not described in detail herein.
Optionally, step 302 includes:
establishing a two-dimensional plane coordinate system, wherein in the two-dimensional plane coordinate system, a first coordinate axis is along the extension direction of the diameter of the coil of the reactor, and a second coordinate axis is along the extension direction of the height of the coil of the reactor; determining geometric data representing a geometric figure of a longitudinal section of each turn of the coil of the reactor based on the outer diameter of the coil and the inner diameter of the coil, wherein the geometric data comprises a side length of the geometric figure; determining coordinates of a center point of each of the geometric figures when displayed in the two-dimensional plane coordinate system based on the coil height; and generating a geometric test model comprising a plurality of geometric figures in the two-dimensional plane coordinate system based on each central point coordinate and the geometric data, wherein the geometric figures are arranged in a matrix.
In this step, the testing device may establish a two-dimensional plane coordinate system, and the testing device may further determine a geometric image, such as a square, of a longitudinal section of each turn of the coil of the reactor to represent each turn of the coil. In a two-dimensional plane coordinate system, the longitudinal section of each wire in the coil of the reactor is the same, and the coil is formed by spirally winding the wires, so that a single wire can be used for representing a pounding coil.
Then, the testing apparatus may determine geometric data of the geometric images using the coil outer diameter and the coil inner diameter of the coil in the reactor, the geometric data including a side length of the geometric image, such as a side length of a square, and may determine a center point coordinate of each of the geometric images when the geometric images are displayed in the two-dimensional plane coordinate system using the coil height of the coil in the reactor, so that after the center point coordinate and the geometric data of each of the geometric images are determined, a plurality of geometric images may be generated in the two-dimensional plane coordinate system, thereby generating the geometric test model, wherein the geometric test model includes a plurality of generated geometric images, and the plurality of geometric images are arranged in a matrix, as shown in fig. 4, fig. 4 is a schematic diagram when the geometric test model is a two-dimensional model, wherein each square represents a turn of the coil and a plurality of squares arranged in a matrix represent a turn of the coil, thereby forming a geometric test model.
In the above example, the geometric image is illustrated as a square, but the geometric image is not limited to this, and in other embodiments, a triangle, a circle, or the like may be used as the geometric image.
The geometric data of the geometric image is determined based on the outer diameter of the coil and the inner diameter of the coil, a difference between the outer diameter of the coil and the inner diameter of the coil can be calculated, the difference can be regarded as the diameter of a wire in the coil of the reactor, and the diameter of the wire, namely the difference, can be used for designing the geometric data such as the side length of the geometric image.
Wherein the coordinates of the center point of each of the geometric figures are determined based on the coil height, since in the two-dimensional coordinate system, a coil of one turn is represented by a geometric figure representing a single wire, the geometric figure is reduced by a certain factor with respect to the actually corresponding coil, in order to ensure that the ratio of the distance between two adjacent turns of the coil in the reactor corresponds to the ratio of the geometric figures, the testing device may determine the distance between two geometric figures adjacent to each other according to the coil height, determine the coordinates of the center point of the first geometric figure generated based on the coil height, and determine the coordinates of the center points of other geometric figures in the geometric test model based on the first geometric figure, for example, the coordinates of the center point of the first geometric figure generated from the lower left side in fig. 4 may be set as the horizontal coordinates of 0, the ordinate is minus one-half the coil height.
In the two-dimensional plane coordinate system, a first coordinate axis of the two-dimensional plane coordinate system may be a dimension along an extending direction of a diameter of the coil of the reactor, that is, a first coordinate axis, may be a dimension representing the diameter of the coil of the reactor, and a dimension of a distance between two geometric figures adjacent in a lateral direction, and a second coordinate axis of the two-dimensional plane coordinate system may be a dimension along an extending direction of a height of the coil of the reactor, that is, a dimension of a second coordinate axis, may be a dimension representing the height of the coil of the reactor, and a dimension of a distance between two geometric figures adjacent in a longitudinal direction.
Optionally, step 302 includes:
establishing a three-dimensional space coordinate system, wherein in the three-dimensional space coordinate system, planes where a first coordinate axis and a second coordinate axis are located are parallel to the cross section of the coil of the reactor, and a third coordinate axis extends along the height direction of the coil of the reactor; determining the position of the midline of each turn of the coil of the reactor in the three-dimensional space coordinate system based on the height of the coil; determining a rotation point corresponding to each midline based on the position of each midline, wherein the vertical distance between each rotation point and the corresponding midline is a preset distance; and according to the current flow direction in the coil, rotating each rotating point around the corresponding midline to obtain a multi-turn coil, and generating a geometric test model comprising the multi-turn coil.
In this step, the testing device may establish a three-dimensional space coordinate system, and then, according to the height of the coil, the testing device may determine a centerline of each turn of the coil of the reactor according to a preset proportion, and further determine a position of each centerline in the three-dimensional space coordinate system, after the testing device determines the position of each centerline, the testing device may further determine a rotation point corresponding to each centerline, which is used to describe a three-dimensional model of each turn of the coil, and control each rotation point to rotate around the corresponding centerline according to a current flow direction in the coil of the reactor, so as to obtain a three-dimensional multi-turn coil, thereby forming the geometric test model, where the geometric test model includes the generated multi-turn coils, and the multi-turn coils may be in matrix distribution.
The vertical distance between each rotating point and the corresponding middle line is a preset distance, and the preset distance can be set in proportion to the coil inner diameter and/or the coil outer diameter of the coil of the reactor.
In the three-dimensional space coordinate system, planes of a first coordinate axis and a second coordinate axis are parallel to a cross section of the coil of the reactor, namely dimensions of the first coordinate axis and the second coordinate axis can be dimensions representing diameters of the coil of the reactor and dimensions representing distances between two adjacent geometric figures in the transverse direction, and a third coordinate axis extends along the height direction of the coil of the reactor, namely dimensions of the third coordinate axis can be dimensions representing heights of the coil of the reactor and dimensions representing distances between two adjacent geometric figures in the longitudinal direction.
Optionally, step 304 includes:
determining an air area in an air field where the geometric test model is located and within a preset range around the geometric test model; and carrying out grid planning on the geometric test model and the air area according to a preset planning rule.
In this step, after the test model is built, in order to facilitate calculation and analysis of the geometric test model, the test model may control the geometric test model to perform mesh analysis, since the distribution of physical fields, such as magnetic fields and electric fields, of the reactor in use also objectively exists in the surrounding air, the influence factors of the physical fields and the like existing in the air field on the reactor cannot be ignored, it is necessary to provide an air region, and therefore, the test apparatus may first generate a geometric test model based on the distribution of the generated geometric test model, to determine an air region within a predetermined range around the geometric test model in the air field in which the geometric test model is located, and then carrying out grid planning on the geometric test model and the air area according to a preset planning rule.
The air region may include an air field in a certain range region around the periphery of the geometric test model, and further include an air field in a hollow portion of the coil represented in the geometric test model table.
The mesh planning can be performed on the geometric test model from small to large in the order from thin to thick, for example, the wire of the coil represented in the geometric test model is planned, the geometric figure representing the wire or the wire in the three-dimensional coil is divided into two halves, and then the corresponding thin rule is adopted to plan the air area.
The geometric test model is subjected to grid planning, and can be planed as finely as possible, so that higher analysis accuracy is realized.
According to the test method of the air reactor provided by the embodiment of the invention, the geometric parameters of the reactor are obtained; establishing a geometric test model of the reactor based on the geometric parameters; carrying out grid planning on the geometric test model; setting test parameters for the geometric test model after the mesh is planed; generating a performance curve graph of the reactor when a coil of the reactor is short-circuited based on the test parameters; and determining the fault condition of the reactor based on the performance curve graph.
Compared with the test method of the air reactor in the prior art, the method has the advantages that the geometric parameters of the reactor are obtained to establish the geometric test model of the reactor, the performance curve diagram of the reactor when the coil of the reactor is in short circuit is obtained through the set test parameters after the geometric test model is planed, the fault condition of the reactor can be determined from the performance curve diagram, the analysis of the reactor is realized, the destructive test of the reactor is not needed, the service life and the service efficiency of the reactor can be ensured, the performance of the reactor can be conveniently detected, and the cost is reduced.
Referring to fig. 5, fig. 5 is a first structural diagram of a testing apparatus for an air-core reactor according to an embodiment of the present invention, fig. 6 is a second structural diagram of a testing apparatus for an air-core reactor according to an embodiment of the present invention, fig. 7 is a first structural diagram of a building module shown in fig. 5, fig. 8 is a second structural diagram of a building module shown in fig. 5, and fig. 9 is a structural diagram of a planning module shown in fig. 5. As shown in fig. 5, the test apparatus 500 includes:
an obtaining module 510, configured to obtain geometric parameters of the reactor.
And the establishing module 520 is used for establishing a geometric test model of the reactor based on the geometric parameters.
And a planning module 530, configured to perform grid planning on the geometric test model.
And a setting module 540, configured to set test parameters for the geometric test model after the mesh slicing.
A generating module 550, configured to generate a performance curve of the reactor when a coil of the reactor is short-circuited based on the test parameter.
Optionally, as shown in fig. 6, the testing apparatus 500 further includes:
a determining module 560 configured to determine a fault condition of the reactor based on the performance graph.
Optionally, the geometric parameters include a coil height, a coil outer diameter, and a coil inner diameter of the reactor, as shown in fig. 7, the establishing module 520 includes:
a first establishing unit 521 for establishing a two-dimensional planar coordinate system in which a first coordinate axis is along an extending direction of a diameter of the coil of the reactor and a second coordinate axis is along an extending direction of a height of the coil of the reactor.
A first determining unit 522, configured to determine geometric data representing a geometric figure of a longitudinal section of each turn of the coil of the reactor based on the coil outer diameter and the coil inner diameter, where the geometric data includes a side length of the geometric figure.
A second determining unit 523, configured to determine, based on the coil height, coordinates of a center point of each of the geometric figures when shown in the two-dimensional plane coordinate system.
A first generating unit 524, configured to generate a geometric test model including a plurality of geometric figures in the two-dimensional plane coordinate system based on each of the center point coordinates and the geometric data, where the plurality of geometric figures are arranged in a matrix.
Optionally, the geometric parameters include a coil height, a coil outer diameter, and a coil inner diameter of the reactor, as shown in fig. 8, the establishing module 520 further includes:
the second establishing unit 525 is configured to establish a three-dimensional space coordinate system, where a plane where the first coordinate axis and the second coordinate axis are located is parallel to a cross section of the coil of the reactor, and the third coordinate axis extends in a height direction of the coil of the reactor.
A third determining unit 526, configured to determine, based on the coil height, a position of a center line of each turn of the coil of the reactor in the three-dimensional space coordinate system.
A fourth determining unit 527, configured to determine, based on a position of each of the central lines, a rotation point corresponding to each of the central lines, where a vertical distance between each of the rotation points and the corresponding central line is a preset distance.
A second generating unit 528, configured to rotate each rotation point around the corresponding centerline according to a current flowing in the coil to obtain a multi-turn coil, and generate a geometric test model including the multi-turn coil.
Optionally, as shown in fig. 9, the slicing module 530 includes:
a fifth determining unit 531, configured to determine an air region in the air field where the geometric test model is located, where the air region is within a preset range around the geometric test model.
And the planning unit 532 is used for carrying out grid planning on the geometric test model and the air area according to a preset planning rule.
Optionally, the test parameters include the position and number of coils in the geometric test model where a short circuit occurs.
The testing apparatus 500 in this embodiment may implement all the method steps of the testing method for the air-core reactor in the embodiments shown in fig. 2 and fig. 3, and may achieve the same effects, which are not described herein again.
The testing device of the air reactor provided by the embodiment of the invention obtains the geometric parameters of the reactor; establishing a geometric test model of the reactor based on the geometric parameters; carrying out grid planning on the geometric test model; setting test parameters for the geometric test model after the mesh is planed; and generating a performance curve graph of the reactor when the coil of the reactor is short-circuited based on the test parameters.
Compared with the test method of the air reactor in the prior art, the method has the advantages that the geometric parameters of the reactor are obtained to establish the geometric test model of the reactor, the performance curve diagram of the reactor when the coil of the reactor is in short circuit is obtained through the set test parameters after the geometric test model is planed, the analysis of the reactor is realized, the destructive test of the reactor is not needed, the service life and the service efficiency of the reactor can be ensured, the performance of the reactor can be conveniently detected, and the cost is reduced.
Referring to fig. 10, fig. 10 is a structural diagram of an electronic device according to an embodiment of the invention. As shown in fig. 10, the electronic device 1000 includes a processor 1010, a memory 1020, and a bus 1030.
The memory 1020 stores machine-readable instructions executable by the processor 1010, when the electronic device 1000 runs, the processor 1010 and the memory 1020 communicate through the bus 1030, and when the machine-readable instructions are executed by the processor 1010, all method steps of the air reactor testing method in the method embodiments shown in fig. 2 and fig. 3 may be executed.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, all the method steps of the method for testing an air-core reactor in the method embodiments shown in fig. 2 and fig. 3 may be executed.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments provided in the present invention, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a non-volatile computer-readable storage medium executable by a processor. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (5)
1. A method for testing an air-core reactor, the method comprising:
acquiring geometric parameters of the reactor;
establishing a geometric test model of the reactor based on the geometric parameters;
mesh generation is carried out on the geometric test model;
setting test parameters for the geometric test model after mesh generation;
generating a performance curve graph of the reactor when a coil of the reactor is short-circuited based on the test parameters;
wherein after the generating a performance graph of the reactor when a coil of the reactor is short-circuited based on the test parameters, the method comprises:
determining a fault condition of the reactor based on the performance graph;
the geometric parameters comprise the coil height, the coil outer diameter and the coil inner diameter of the reactor, and the establishment of the geometric test model of the reactor based on the geometric parameters comprises the following steps:
establishing a two-dimensional plane coordinate system, wherein in the two-dimensional plane coordinate system, a first coordinate axis is along the extension direction of the diameter of the coil of the reactor, and a second coordinate axis is along the extension direction of the height of the coil of the reactor;
determining geometric data representing a geometric figure of a longitudinal section of each turn of the coil of the reactor based on the outer diameter of the coil and the inner diameter of the coil, wherein the geometric data comprises a side length of the geometric figure;
determining coordinates of a center point of each of the geometric figures when displayed in the two-dimensional plane coordinate system based on the coil height;
generating a geometric test model comprising a plurality of geometric figures in the two-dimensional plane coordinate system based on each central point coordinate and the geometric data, wherein the geometric figures are arranged in a matrix;
the geometric parameters comprise the coil height, the coil outer diameter and the coil inner diameter of the reactor, and the establishment of the geometric test model of the reactor based on the geometric parameters comprises the following steps: establishing a three-dimensional space coordinate system, wherein in the three-dimensional space coordinate system, planes where a first coordinate axis and a second coordinate axis are located are parallel to the cross section of the coil of the reactor, and a third coordinate axis extends along the height direction of the coil of the reactor;
determining the position of the midline of each turn of the coil of the reactor in the three-dimensional space coordinate system based on the height of the coil;
determining a rotation point corresponding to each midline based on the position of each midline, wherein the vertical distance between each rotation point and the corresponding midline is a preset distance;
and according to the current flow direction in the coil, rotating each rotating point around the corresponding midline to obtain a multi-turn coil, and generating a geometric test model comprising the multi-turn coil.
2. The method of claim 1, wherein the step of meshing the geometric test model comprises:
determining an air area in an air field where the geometric test model is located and within a preset range around the geometric test model;
and mesh generation is carried out on the geometric test model and the air area according to a preset generation rule.
3. The method of claim 1, wherein the test parameters include a location and a number of coils in the geometric test model that are shorted.
4. A test device for an air-core reactor, characterized in that the test device comprises:
the acquisition module is used for acquiring geometric parameters of the reactor;
the establishing module is used for establishing a geometric test model of the reactor based on the geometric parameters;
the subdivision module is used for carrying out mesh subdivision on the geometric test model;
the setting module is used for setting test parameters for the geometric test model after mesh generation;
the generating module is used for generating a performance curve graph of the reactor when a coil of the reactor is in short circuit based on the test parameters;
wherein, the testing device further comprises:
the determining module is used for determining the fault condition of the reactor based on the performance curve graph;
the geometric parameters include a coil height, a coil outer diameter and a coil inner diameter of the reactor, and the establishing module includes:
a first establishing unit configured to establish a two-dimensional planar coordinate system in which a first coordinate axis is along an extending direction of a diameter of a coil of the reactor and a second coordinate axis is along an extending direction of a height of the coil of the reactor;
a first determination unit configured to determine geometric data representing a geometric figure of a longitudinal section of each turn of the coil of the reactor based on the coil outer diameter and the coil inner diameter, wherein the geometric data includes a side length of the geometric figure;
a second determining unit, configured to determine, based on the coil height, a center point coordinate of each of the geometric figures when shown in the two-dimensional plane coordinate system;
a first generating unit, configured to generate a geometric test model including a plurality of geometric figures in the two-dimensional plane coordinate system based on each of the center point coordinates and the geometric data, where the geometric figures are arranged in a matrix;
the establishing module further comprises: the second establishing unit is used for establishing a three-dimensional space coordinate system, wherein in the three-dimensional space coordinate system, planes where the first coordinate axis and the second coordinate axis are located are parallel to the cross section of the coil of the reactor, and the third coordinate axis extends along the height direction of the coil of the reactor;
a third determining unit, configured to determine, based on the coil height, a position of a center line of each turn of the coil of the reactor in the three-dimensional space coordinate system;
a fourth determining unit, configured to determine a rotation point corresponding to each centerline based on a position of each centerline, where a vertical distance between each rotation point and the corresponding centerline is a preset distance;
and the second generating unit is used for rotating each rotating point around the corresponding midline to obtain a multi-turn coil according to the current flowing direction in the coil, and generating a geometric test model comprising the multi-turn coil.
5. The testing apparatus of claim 4, wherein the subdivision module comprises:
a fifth determining unit, configured to determine an air region in the air field where the geometric test model is located and within a preset range around the geometric test model;
and the subdivision unit is used for carrying out mesh subdivision on the geometric test model and the air area according to a preset subdivision rule.
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