Rogowski coil position error detection device and method

Abstract

The invention provides a Rogowski coil position error detection device and method, and belongs to the technical field of Rogowski coil detection.The Rogowski coil position error detection device comprises a base provided with a fixing seat used for fixing a Rogowski coil; the rotating assembly comprises a support and a rotating seat, the support is connected with the base, and one end of the rotating seat is rotatably connected with the support; and the current-carrying rod is connected with the other end of the rotating seat, the current-carrying rod is provided with a current-carrying wire, and the rotating seat can drive the current-carrying rod to rotate so as to change the position of the current-carrying wire relative to the Rogowski coil. The device has the beneficial effects that the rotating seat can drive the current-carrying rod to rotate so as to change the position of the current-carrying wire relative to the Rogowski coil, so that the current-carrying wire can uniformly rotate to change the position, whether coil winding is uniform or not is judged through continuous detection and analysis in the movement process of the Rogowski coil, and the detection accuracy and the detection efficiency are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of Rogowski coil detection, and relates to a Rogowski coil position error detection device and method. Background Art

[0002] If the winding of the Rogowski coil is uneven, when the primary wire does not pass through the coil vertically from the center, or the coil tilts and falls on the primary wire, the error of the Rogowski coil will deviate greatly.

[0003] For example, an invention patent with a publication number of CN117968486A provides a Rogowski coil detection device, which belongs to the field of Rogowski coil detection technology, and includes: a base, which is provided with a detection rod; a mounting seat, which is provided with a first positioning hole, a second positioning hole and a fixing portion for mounting the Rogowski coil; a translation detection component, which includes a first translation drive element and a first positioning pin; a lifting detection component, which includes a first lifting drive element and a second positioning pin. The beneficial effects of the present invention are: when the first positioning pin is inserted into the first positioning hole and the second positioning pin is separated from the second positioning hole, the first translation drive element can drive the mounting seat to translate so that the detection rod and the Rogowski coil are in contact at two points in the horizontal direction for detection; when the first positioning pin is separated from the first positioning hole and the second positioning pin is inserted into the second positioning hole, the first lifting drive element can drive the mounting seat to lift so that the detection rod and the Rogowski coil are in contact at two points in the vertical direction for detection, thereby realizing the position error detection of the top, bottom, left, right and middle five points.

[0004] To sum up, although some existing technical solutions can perform certain detection, in addition to the five positions of up, down, left, right, and center, uneven coil winding may also occur at other positions, and large eccentricity or tilt errors may still occur, leaving much room for improvement. Summary of the invention

[0005] The purpose of the present invention is to address the above-mentioned problems existing in the prior art and to propose a Rogowski coil position error detection device and method.

[0006] The object of the present invention can be achieved by the following technical scheme: A Rogowski coil position error detection device, comprising:

[0007] A base, which is provided with a fixing seat for fixing the Rogowski coil;

[0008] A rotating assembly, comprising a support and a rotating seat, wherein the support is connected to the base, and one end of the rotating seat is rotatably connected to the support;

[0009] A current-carrying rod is connected to the other end of the rotating seat. The current-carrying rod is provided with a current-carrying wire. The rotating seat can drive the current-carrying rod to rotate so as to change the position of the current-carrying wire relative to the Rogowski coil.

[0010] In the above-mentioned Rogowski coil position error detection device, it also includes a rotation drive component, the rotation drive component is connected to the base, the rotating seat is connected to the rotation drive component, and the rotation drive component can drive the rotating seat to rotate.

[0011] In the above-mentioned Rogowski coil position error detection device, the rotation drive assembly includes a rotating rod and a motor, the rotating seat is rotatably connected to the support through the rotating rod, the rotating rod extends out of the base to form a driving end, the motor is connected to the base, the driving end is connected to the motor, and the motor can drive the driving end to rotate.

[0012] In the above-mentioned Rogowski coil position error detection device, the rotation drive component also includes a transmission component, the transmission component includes a driven wheel and a driving wheel, the driven wheel and the driving wheel are arranged between the driving end and the motor, the driven wheel is connected to the driving end, the driving wheel is connected to the output shaft of the motor, and the driven wheel is meshed with the driving wheel or connected by belt transmission.

[0013] In the above-mentioned Rogowski coil position error detection device, the number of the rotating components and the transmission components are at least two, the two ends of the current-carrying rod are respectively connected to the rotating seats of two of the rotating components, the output shaft of the motor is provided with a driving rod, and the base is also provided with a limiting seat, the two ends of the driving rod are respectively connected to the driven wheels of two of the transmission components, and the middle part of the driving rod is rotatably connected to the limiting seat.

[0014] In the above-mentioned Rogowski coil position error detection device, the fixing seat is provided with a mounting slot and a movable locking pin, and the movable pin can be moved to a locking position to block the Rogowski coil from entering and exiting the mounting slot, or moved to an unlocking position to allow the Rogowski coil to enter and exit the mounting slot.

[0015] In the above-mentioned Rogowski coil position error detection device, it also includes a fastener, the base is also provided with a fastening groove, the fixing seat is provided with a fastening hole, the fastening groove is a strip groove and is distributed along the length direction of the base, the head of the fastener is located in the fastening groove and contacts the base, and the tail of the fastener passes through the fastening hole and contacts the fixing seat.

[0016] In the above-mentioned Rogowski coil position error detection device, it also includes a calibrator and a current source, the current source is electrically connected to the current-carrying line and supplies power to the current-carrying line, the calibrator is used to be electrically connected to the Rogowski coil, and the calibrator is used to collect the output signal of the Rogowski coil in real time and calculate the current ratio difference and current phase difference of the Rogowski coil output signal.

[0017] Secondly, a Rogowski coil position error detection method comprises the steps of:

[0018] S1: Install the Rogowski coil in the mounting groove of the fixing base, and fix the Rogowski coil in the mounting groove by moving the locking pin;

[0019] S2: bend the Rogowski coil so that the current-carrying rod passes through itself, and connect the current source to power the current-carrying wire;

[0020] S3: Control the motor to rotate the current-carrying rod relative to the base, collect the output signal of the Rogowski coil in real time through the calibrator, calculate the current ratio difference and the current phase difference of the Rogowski coil output signal, and compare the current ratio difference and the current phase difference with the standard ratio difference and the standard phase difference respectively.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The rotating seat can drive the current-carrying rod to rotate, thereby changing the position of the current-carrying wire relative to the Rogowski coil, so that the current-carrying wire can rotate and change its position evenly. Through continuous detection and analysis of the movement of the Rogowski coil, it is determined whether the coil winding is uniform, thereby improving the detection accuracy and efficiency.

[0023] 2. The motor can drive the driving end formed by the extension of the rotating rod to rotate, so that the rotating seat rotates relative to the support through the rotating rod, and then drives the current-carrying rod to rotate, so as to change the position of the current-carrying line relative to the Rogowski coil.

[0024] 3. The movable pin can be moved to a locking position, where the projection of the locking position in the height direction of the mounting slot falls within the mounting slot, thereby blocking the Rogowski coil from entering or exiting the mounting slot, or moved to an unlocking position, where the projection of the unlocking position in the height direction of the mounting slot falls outside the mounting slot, thereby allowing the Rogowski coil to enter or exit the mounting slot.

[0025] 4. When the fastener is not in a tightened state, the position of the fixing seat can be adjusted along the length direction of the base. When the fastener is in a tightened state, the fixing seat is fixed to the base, so that more Rogowski coils can be fixed and detected by flexibly adjusting the positions of multiple fixing seats, while preventing the Rogowski coils from interfering with each other.

[0026] 5. After the current source supplies power to the current-carrying wire, the calibrator can collect the output signal of the Rogowski coil in real time and calculate the current ratio difference and current phase difference of the output signal of the Rogowski coil. Then, by comparing the current ratio difference and current phase difference with the standard ratio difference and standard phase difference respectively, it can be determined whether the winding of the Rogowski coil is uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic structural diagram of the Rogowski coil position error detection device of the present invention.

[0028] Figure 2 for Figure 1 An enlarged view of part A.

[0029] Figure 3 It is a structural schematic diagram of the Rogowski coil position error detection device of the present invention from another perspective.

[0030] Figure 4 This is a structural schematic diagram of the Rogowski coil position error detection device of the present invention from another perspective.

[0031] Figure 5 It is a top view of the Rogowski coil position error detection device of the present invention.

[0032] Figure 6 for Figure 5 Cross-sectional view from BB perspective

[0033] In the figure, 100, base; 110, fixed seat; 111, mounting groove; 112, locking pin; 113, fastening hole; 120, limit seat; 130, fastening groove; 210, support; 220, rotating seat; 300, current-carrying rod; 410, rotating rod; 411, driving end; 420, motor; 421, driving rod; 430, driven wheel; 440, driving wheel. DETAILED DESCRIPTION

[0034] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0035] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0036] In addition, in the present invention, descriptions such as "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0037] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0039] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0040] like Figure 1-Figure 6 As shown, a Rogowski coil position error detection device includes: a base, a rotating component and a current-carrying rod.

[0041] Wherein, the base is provided with a fixing seat for fixing the Rogowski coil.

[0042] Wherein, the rotating assembly includes a support and a rotating seat, the support is connected to the base, and one end of the rotating seat is rotatably connected to the support.

[0043] The current-carrying rod is connected to the other end of the rotating seat, the current-carrying rod is provided with a current-carrying wire, and the rotating seat can drive the current-carrying rod to rotate so as to change the position of the current-carrying wire relative to the Rogowski coil.

[0044] In this embodiment, the rotating seat can drive the current-carrying rod to rotate, thereby changing the position of the current-carrying wire relative to the Rogowski coil, so that the current-carrying wire can rotate and change its position evenly. By continuously detecting and analyzing the movement of the Rogowski coil, it is determined whether the coil winding is uniform, thereby improving the detection accuracy and efficiency.

[0045] like Figure 1-Figure 6 As shown, based on the above embodiment, it also includes a rotation drive component, the rotation drive component is connected to the base, the rotating seat is connected to the rotation drive component, and the rotation drive component can drive the rotating seat to rotate.

[0046] In this embodiment, the rotation drive assembly may be a manually driven rotation assembly, such as a hand crank arm, or may be a manually driven rotation assembly, such as a motor.

[0047] like Figure 1-Figure 6 As shown, based on the above embodiment, the rotating drive assembly includes a rotating rod and a motor, the rotating seat is rotatably connected to the support through the rotating rod, the rotating rod extends out of the base to form a driving end, the motor is connected to the base, the driving end is connected to the motor, and the motor can drive the driving end to rotate.

[0048] In this embodiment, the motor can drive the driving end formed by the extension of the rotating rod to rotate, so that the rotating seat rotates relative to the support through the rotating rod, and then drives the current-carrying rod to rotate to change the position of the current-carrying line relative to the Rogowski coil.

[0049] like Figure 1-Figure 6 As shown, on the basis of the above embodiment, the rotating drive assembly also includes a transmission assembly, and the transmission assembly includes a driven wheel 430 and a driving wheel 440, and the driven wheel 430 and the driving wheel 440 are arranged between the driving end 411 and the motor 420, the driven wheel 430 is connected to the driving end 411, and the driving wheel 440 is connected to the output shaft of the motor 420, and the driven wheel 430 is meshed with the driving wheel 440 or connected with a belt drive.

[0050] In this embodiment, the driving wheel 440 is connected to the output shaft of the motor 420, and the driven wheel 430 is meshed with the driving wheel 440 or connected by belt transmission, so that the motor 420 and the driving end 411 do not need to be directly connected. The torque output by the output shaft of the motor 420 is transmitted to the driving end 411 through the transmission of the driving wheel 440 and the driven wheel 430, ensuring that the rotating seat 220 has a suitable rotation speed and torque.

[0051] like Figure 1-Figure 6As shown, on the basis of the above embodiment, the number of the rotating components and the transmission components are at least two, the two ends of the current-carrying rod 300 are respectively connected to the rotating seats 220 of two of the rotating components, the output shaft of the motor 420 is provided with a driving rod 421, and the base 100 is also provided with a limiting seat 120, the two ends of the driving rod 421 are respectively connected to the driven wheels 430 of two of the transmission components, and the middle part of the driving rod 421 is rotatably connected to the limiting seat 120.

[0052] In this embodiment, the two ends of the driving rod 421 are respectively connected to the driven wheels 430 of two of the transmission components, and the middle part of the driving rod 421 is rotatably connected to the limit seat 120. Therefore, the two ends of the current-carrying rod 300 can be driven to rotate by the driving rod 421, thereby preventing only one-side transmission from causing movement deformation of the transmission rod and inaccurate detection results.

[0053] like Figure 1-Figure 6 As shown, based on the above embodiment, the fixing seat 110 is provided with a mounting slot 111 and a movable locking pin 112, and the movable pin can be moved to a locking position to block the Rogowski coil from entering and exiting the mounting slot 111, or moved to an unlocking position to allow the Rogowski coil to enter and exit the mounting slot 111.

[0054] In this embodiment, the movable pin can be moved to a locking position, where the projection of the locking position in the height direction of the mounting slot 111 falls inside the mounting slot 111, thereby blocking the Rogowski coil from entering and exiting the mounting slot 111, or moved to an unlocking position, where the projection of the unlocking position in the height direction of the mounting slot 111 falls outside the mounting slot 111, thereby allowing the Rogowski coil to enter and exit the mounting slot 111.

[0055] like Figure 1-Figure 6 As shown, on the basis of the above embodiment, a fastener (not shown in the figure) is further included, the base 100 is also provided with a fastening groove 130, the fixing seat 110 is provided with a fastening hole 113, the fastening groove 130 is a strip groove and is distributed along the length direction of the base 100, the head of the fastener is located in the fastening groove 130 and contacts the base 100, and the tail of the fastener passes through the fastening hole 113 and contacts the fixing seat 110.

[0056] In this embodiment, when the fastener is not in a fastened state, the position of the fixing seat 110 can be adjusted along the length direction of the base 100. When the fastener is in a fastened state, the fixing seat 110 is fixed to the base 100, so that more Rogowski coils can be fixed and detected by flexibly adjusting the positions of multiple fixing seats 110, while preventing the Rogowski coils from interfering with each other.

[0057] like Figure 1-Figure 6As shown, on the basis of the above implementation, it also includes a calibrator (not shown in the figure) and a current source (not shown in the figure), the current source is electrically connected to the current-carrying line and supplies power to the current-carrying line, the calibrator is used to be electrically connected to the Rogowski coil, and the calibrator is used to collect the output signal of the Rogowski coil in real time and calculate the current ratio difference and the current phase difference of the output signal of the Rogowski coil.

[0058] In this embodiment, after the current source supplies power to the current-carrying wire, the calibrator can collect the output signal of the Rogowski coil in real time and calculate the current ratio difference and the current phase difference of the output signal of the Rogowski coil, and then determine whether the winding of the Rogowski coil is uniform by comparing the current ratio difference and the current phase difference with the standard ratio difference and the standard phase difference respectively.

[0059] like Figure 1-Figure 6 As shown, a method for detecting a position error of a Rogowski coil comprises the steps of:

[0060] S1: Install the Rogowski coil in the mounting groove 111 of the fixing base 110, and fix the Rogowski coil in the mounting groove 111 by moving the locking pin 112;

[0061] S2: bend the Rogowski coil so that the current-carrying rod 300 passes through itself, and connect the current source to supply power to the current-carrying wire;

[0062] S3: Control the motor 420 to rotate the current-carrying rod 300 relative to the base 100, collect the output signal of the Rogowski coil in real time through the calibration instrument, calculate the current ratio difference and the current phase difference of the Rogowski coil output signal, and compare the current ratio difference and the current phase difference with the standard ratio difference and the standard phase difference respectively.

[0063] In this embodiment, the rotating seat 220 can drive the current-carrying rod 300 to rotate, thereby changing the position of the current-carrying wire relative to the Rogowski coil, so that the current-carrying wire can rotate and change its position evenly, and through continuous detection and analysis of the movement of the Rogowski coil, it is determined whether the coil winding is uniform, thereby improving the detection accuracy and detection efficiency; after the current source supplies power to the current-carrying wire, the calibrator can collect the output signal of the Rogowski coil in real time and calculate the current ratio difference and the current phase difference of the Rogowski coil output signal, and then compare the current ratio difference and the current phase difference with the standard ratio difference and the standard phase difference respectively, to determine whether the winding of the Rogowski coil is uniform.

Claims

1. A Rogowski coil rotation error detection device, characterized in that: include: A base, which is provided with a fixing seat for fixing the Rogowski coil; A rotating assembly, comprising a support and a rotating seat, wherein the support is connected to the base, and one end of the rotating seat is rotatably connected to the support; A current-carrying rod is connected to the other end of the rotating seat. The current-carrying rod is provided with a current-carrying wire. The rotating seat can drive the current-carrying rod to rotate so as to change the position of the current-carrying wire relative to the Rogowski coil.

2. A Rogowski coil rotation error detection device as claimed in claim 1, characterized in that: It also includes a rotation drive component, which is connected to the base, and the rotating seat is connected to the rotation drive component, and the rotation drive component can drive the rotating seat to rotate.

3. A Rogowski coil rotation error detection device as claimed in claim 2, characterized in that: The rotating drive assembly includes a driving rod and a motor. The rotating seat is rotatably connected to the support through the driving rod. The driving rod extends out of the base to form a driving end. The motor is connected to the base, and the driving end is connected to the motor. The motor can drive the driving end to rotate.

4. A Rogowski coil rotation error detection device as claimed in claim 3, characterized in that: The rotary drive assembly also includes a transmission assembly, which includes a driven wheel and a driving wheel. The driven wheel and the driving wheel are arranged between the driving end and the motor, the driven wheel is connected to the driving end, the driving wheel is connected to the output shaft of the motor, and the driven wheel is meshed with the driving wheel or connected with a belt drive.

5. A Rogowski coil rotation error detection device as claimed in claim 4, characterized in that: The number of the rotating components and the transmission components is at least two, the two ends of the current-carrying rod are respectively connected to the rotating seats of two of the rotating components, the output shaft of the motor is provided with a driving rod, and the base is also provided with a limiting seat, the two ends of the driving rod are respectively connected to the driven wheels of two of the transmission components, and the middle part of the driving rod is rotatably connected to the limiting seat.

6. A Rogowski coil rotation error detection device as claimed in claim 1, characterized in that: The fixing seat is provided with a mounting slot and a movable locking pin, and the movable pin can be moved to a locking position to block the Rogowski coil from entering or exiting the mounting slot, or moved to an unlocking position to allow the Rogowski coil to enter or exit the mounting slot.

7. A Rogowski coil rotation error detection device as claimed in claim 1, characterized in that: It also includes a fastener, the base is also provided with a fastening groove, the fixing seat is provided with a fastening hole, the fastening groove is a strip groove and is distributed along the length direction of the base, the head of the fastener is located in the fastening groove and contacts the base, and the tail of the fastener passes through the fastening hole and contacts the fixing seat.

8. A Rogowski coil rotation error detection device as claimed in claim 7, characterized in that: It also includes a calibrator and a current source, wherein the current source is electrically connected to the current-carrying line and supplies power to the current-carrying line, and the calibrator is used to be electrically connected to the Rogowski coil, and the calibrator is used to collect the output signal of the Rogowski coil in real time and calculate the current ratio difference and current phase difference of the output signal of the Rogowski coil.

9. A method for detecting a turning error of a Rogowski coil, characterized in that: Includes steps: S1: Install the Rogowski coil in the mounting groove of the fixing base, and fix the Rogowski coil in the mounting groove by moving the locking pin; S2: bend the Rogowski coil so that the current-carrying rod passes through itself, and connect the current source to power the current-carrying wire; S3: Control the motor to rotate the current-carrying rod relative to the base, collect the output signal of the Rogowski coil in real time through the calibrator, calculate the current ratio difference and the current phase difference of the Rogowski coil output signal, and compare the current ratio difference and the current phase difference with the standard ratio difference and the standard phase difference respectively.

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