CN116736194A - Detector applicable to various transformer windings and chassis - Google Patents
Detector applicable to various transformer windings and chassis Download PDFInfo
- Publication number
- CN116736194A CN116736194A CN202310678205.4A CN202310678205A CN116736194A CN 116736194 A CN116736194 A CN 116736194A CN 202310678205 A CN202310678205 A CN 202310678205A CN 116736194 A CN116736194 A CN 116736194A
- Authority
- CN
- China
- Prior art keywords
- clamp
- transformer
- unit
- module
- transformer windings
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004804 winding Methods 0.000 title claims abstract description 100
- 238000001514 detection method Methods 0.000 claims abstract description 58
- 238000004891 communication Methods 0.000 claims abstract description 23
- 230000004044 response Effects 0.000 claims description 39
- 230000005284 excitation Effects 0.000 claims description 16
- 238000012360 testing method Methods 0.000 claims description 15
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 238000013024 troubleshooting Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 12
- 230000006870 function Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 230000009471 action Effects 0.000 description 6
- 238000011895 specific detection Methods 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000016507 interphase Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/72—Testing of electric windings
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/16—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0416—Connectors, terminals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/62—Testing of transformers
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The application discloses a detector and a case applicable to various transformer windings, belonging to the technical field of detection systems, wherein the detector applicable to various transformer windings comprises a winding deformation detection module and a display operation module, and further comprises: the two position calibration modules are respectively and fixedly connected to the first clamp and the second clamp and are used for measuring and/or adjusting the clamping positions of the first clamp and the second clamp; the second communication terminal interface is in signal connection with the main control board; the identification module is connected with the second communication end interface through signals and can at least identify the type of the transformer to be detected and identify the positions of the first clamp and the second clamp; the memory is connected with the main control board through signals and at least can be used for identifying the type of the transformer to be detected, the configuration parameters of the corresponding transformer and the connection position information of the clamp on the corresponding transformer. The application can improve the detection accuracy of transformer windings of different models.
Description
Technical Field
The application belongs to the technical field of detection systems, and particularly relates to a detector applicable to various transformer windings.
Background
A transformer is a device for changing an ac voltage using the principle of electromagnetic induction, and the main components are a primary coil, a secondary coil, and an iron core (magnetic core). Deformation of a transformer winding means that the winding is subjected to mechanical and electrical forces, and the size and shape of the winding are irreversibly changed. It includes axial and radial dimensional changes, body displacement, winding twist, bulge, turn-to-turn short circuit, etc. The reason is that the transformer is difficult to avoid in operation and is subjected to various short-circuit impacts, wherein the damage of the outlet short circuit to the transformer is particularly serious. Although the circuit breaker can rapidly cut off the short-circuit fault from the circuit, the automatic device is usually not operated for a certain reason, so that the transformer coil is deformed in a short time under the action of short-circuit current heat and electric force, and even interphase short circuit is seriously caused, and the winding is burnt out; meanwhile, the transformer is likely to be impacted by collision in the transportation and installation process to generate phenomena of torsion, strand breakage, displacement, loosening and the like.
During specific detection, the amplitude-frequency response characteristic of the transformer winding is related to the position of the tap changer, and the tap changer is ensured to be positioned at the same position during each detection; and because the detection signal is weaker, all wiring should be stable and reliable. However, when the transformer windings of different types are deformed and detected, the clamp is difficult to be accurately installed at a required connection position, and when the transformer windings are measured for many times, the detection effect is different, so that detection errors are caused.
Disclosure of Invention
Aiming at the problems in the prior art, the application provides a detector applicable to various transformer windings, which has the advantage of improving the detection accuracy of the transformer windings with different types, and solves the problems that in the prior art, clamps are difficult to accurately install at needed connection positions, and detection errors are caused by different detection effects during repeated measurement.
The application is realized in such a way, the detector applicable to various transformer windings comprises a winding deformation detection module and a display operation module, wherein the winding deformation detection module comprises a hardware unit and a software unit, the hardware unit is provided with a main control board, the main control board is in signal connection with an excitation end, a reference end, a response end and a first communication end interface, the excitation end and the response end are connected with the same first clamp through lead electric signals, the reference end is connected with a second clamp through lead electric signals, the hardware unit further comprises a power supply module and a grounding end, and the display operation module is in signal connection with the first communication end interface, and the detector further comprises: the two position calibration modules are respectively and fixedly connected to the first clamp and the second clamp and are used for measuring and/or adjusting the clamping positions of the first clamp and the second clamp; the second communication end interface is in signal connection with the main control board; the identification module is in signal connection with the second communication end interface, and can at least identify the type of the transformer to be detected and identify the positions of the first clamp and the second clamp; the memory is connected with the main control board in a signal way and at least can be used for identifying the type of the transformer to be detected, the configuration parameters of the corresponding transformer and the connection position information of the clamp on the corresponding transformer.
The application uses a frequency response method to detect whether the transformer winding is deformed or not, and the detection principle is as follows:
under the action of voltage with higher frequency, each winding of the transformer can be regarded as a passive linear double-port network formed by distributed parameters such as linear resistance, inductance (mutual inductance), capacitance and the like, the internal characteristics of the passive linear double-port network can be described by a transfer function H (j omega), if the winding is deformed, the distributed parameters such as inductance, capacitance and the like in the winding are necessarily changed, so that the zero point and the pole of the equivalent network transfer function H (j omega) are changed, and the frequency response characteristic of the network is changed. The deformation of the winding of the transformer is detected by a frequency response analysis method, namely, the amplitude-frequency response characteristics of each winding of the transformer are detected, the detection results are compared longitudinally or transversely, and the possible deformation of the winding of the transformer is judged according to the difference of the amplitude-frequency response characteristics. The amplitude-frequency response characteristic of the transformer winding is obtained by using the frequency scanning mode shown in fig. 1. The frequency f (angular frequency omega=2pi f) of the external Shi Zhengxian wave excitation source VS is continuously changed, the ratio of the signal amplitudes of the response terminal voltage V2 and the excitation terminal voltage V1 at different frequencies is measured, and the amplitude-frequency response curve of the winding under the conditions of the designated excitation terminal and the response terminal is obtained. In the figure: l, K and C respectively represent the distributed inductance, the distributed capacitance and the distributed capacitance to the ground of the unit length of the winding, V1 and V2 are the excitation terminal voltage and the response terminal voltage of the equivalent network respectively, VS is the sine wave excitation signal source voltage, RS is the signal source output impedance, and R is the matching resistance.
During detection, the model identification module firstly identifies the model of the transformer to be detected, so that configuration parameters during detection are automatically adjusted according to the model of the transformer, and through the setting, on one hand, time and labor are saved, on the other hand, manual misoperation can be avoided, and the method is also suitable for direct operation of zero-base people; then, a user clamps the clamp on the detection end of the transformer winding, and the display operation module is used for operation, so that the winding deformation detection module is used for detecting the transformer winding; during specific detection, the amplitude-frequency response characteristic of the transformer winding is related to the position of the tap changer, and the tap changer is ensured to be positioned at the same position during each detection; and because the detection signal is weaker, all wiring should be stable and reliable. The identification module identifies the connection position of the first clamp and the second clamp, and then drives the position calibration module to adjust the positions of the clamps, so that the connection positions of the clamps on the same model are the same, wiring can be stable and reliable, and the detection accuracy is further improved; through the arrangement, the memory records the connection position data, identifies the model, automatically adjusts the connection position, and enables the connection positions to be the same each time, thereby improving the detection precision. After the model is identified, configuration parameters can be automatically selected through past period data configuration, so that detection is more convenient.
As a preferred embodiment of the present application, the display operation module includes an operating system, a display unit, and an input unit; the operating system is connected with the main control board through the first communication interface signal, and the software unit runs on the operating system; the display unit is in signal connection with the operating system, a man-machine operation interface is arranged in the display unit, the man-machine operation interface is used for completing control and scheduling of test items of the tested piece, processing and judging corresponding results of the tested piece, giving test results, and providing a hellp file for testing troubleshooting; the input unit is connected with the operating system in a signal manner and is used for inputting an operation instruction.
The display operation module is set as a computer, a display screen of the computer is used as a display unit of the application, a keyboard and a mouse of the computer are used as input units of the application, and an operating system of the computer is used as an operating system of the application. It should be noted that the operating system, the display unit and the input unit are not limited to the above-mentioned configuration, and the operating system, the display unit and the input unit may be integrated on the same device, or may be respectively provided on corresponding devices, and are connected to each other through signals, thereby implementing the above-mentioned functions, which is not limited herein.
As a preferred aspect of the present application, the identification module includes an appearance identification unit for identifying an appearance of the transformer, thereby judging an appearance damage degree of the transformer.
Preferably, the identification module comprises a wiring auxiliary identification unit for identifying whether the wiring of the clamp and the transformer is correct.
As the preferred mode of the application, the recognition module further comprises a voice reminding unit which is connected with the main control board in a signal manner and used for reminding a user of correctly matching the clamp and the testing end of the winding. For example, when the preparation work is finished, the user picks up the clamp to be clamped on the test end of the winding, the voice reminding unit identifies the picked clamp, and a prompt is sent to the user, for example, the prompt content is: the clamp is clamped at the upper end (or the lower end) of the Nth connecting end (from left to right), so that wiring is assisted, and the fault rate of wiring is reduced.
The method for identifying which clamp is picked up is as follows: scheme one: the clamp is provided with a sensing module (such as a displacement sensor), the picked clamp is identified through the sensing module, and then a user is prompted to connect the clamp to a corresponding connection position through a voice reminding module. And in the second scheme, the identification module is used for directly identifying which clamp is taken up.
As preferable, the clamping arm of the clamp is provided with a round hole;
the position calibration module comprises a frame, a motor, a rotating shaft and a self-driven wheel;
the motor is fixedly connected to the outer surface of the first clamp and/or the second clamp through a frame, the output end of the motor is fixedly connected with the rotating shaft, the other end of the rotating shaft is connected to the self-driven wheel, and part of the self-driven wheel extends into the clamping arm of the clamp through the round hole;
the outer peripheral surface of the self-driven wheel is provided with an annular groove, and an air bag is fixedly connected inside the annular groove.
When the position of the clamp needs to be adjusted, the clamp can be rotated or moved up and down through the movement of the self-driven wheel, the motor drives the self-driven wheel to rotate, when the self-driven wheel is transversely arranged, the self-driven wheel can rotate to drive the clamp to rotate, when the self-driven wheel is vertically arranged, the self-driven wheel can rotate to drive the clamp to move up and down, and the self-driven wheel can also tilt to rotate, so that the rotation and the up and down movement are completed simultaneously.
The air bag has the functions of: when the air bag is inflated, the clamp can be opened, so that the clamp can be moved conveniently; after the movement is finished, the air bag is deflated, and the clamp can be firmly connected with the connecting end of the winding, so that signals are not weakened.
As a preferred aspect of the present application, the recognition module (e.g., a camera) is mounted on the first clamp and/or the second clamp, and on one hand, it is possible to determine which clamp is gripped by the screen change recognized by the recognition module, thereby assisting the connection of the clamps by the voice reminding unit; on the other hand, the identification module can be moved by moving the clamp, so that the identification range is conveniently enlarged, and the identification effect is improved; and moreover, the position of the clamp can be conveniently and reversely judged through the picture of the identification module, so that the position calibration module is conveniently informed to calibrate the position of the clamp.
As preferable, the main control board is connected with a third communication terminal interface in a signal manner;
the winding deformation comparison module is in signal connection with the third communication end interface and comprises a normal interval setting unit, a numbering unit, a data callback unit and a damage comparison unit;
the normal interval setting unit is used for presetting intervals of deformation parameters of the transformer windings of corresponding models, for example, intervals formed by amplitude-frequency response characteristic curves of the two transformer windings, and judging whether the detected amplitude-frequency response characteristic curves of the transformer windings exceed the range of the intervals or not so as to judge whether the deformation exceeds a preset value or not;
the numbering unit is used for carrying out image recognition on each device, numbering, and automatically calling out date-of-arrival data through the data callback unit after the same transformer is recognized, so that the damage degree and the damage rate are conveniently compared through the damage comparison unit; the damage comparison unit comprises a timing subunit for calculating time and assisting in comparing damage rate.
A case for accommodating the detector applicable to various transformer windings.
Compared with the prior art, the application has the following beneficial effects:
in the application, during detection, the model identification module firstly identifies the model of the transformer to be detected, so that the configuration parameters during detection are automatically adjusted according to the model of the transformer, and through the setting, on one hand, time and labor are saved, on the other hand, manual misoperation can be avoided, and the method is also suitable for direct operation of zero-base people; then, a user clamps the clamp on the detection end of the transformer winding, and the display operation module is used for operation, so that the winding deformation detection module is used for detecting the transformer winding; during specific detection, the amplitude-frequency response characteristic of the transformer winding is related to the position of the tap changer, and the tap changer is ensured to be positioned at the same position during each detection; and because the detection signal is weaker, all wiring should be stable and reliable. The identification module identifies the connection position of the first clamp and the second clamp, and then drives the position calibration module to adjust the positions of the clamps, so that the connection positions of the clamps on the same model are the same, wiring can be stable and reliable, and the detection accuracy is further improved; through the arrangement, the memory records the connection position data, identifies the model, automatically adjusts the connection position, and enables the connection positions to be the same each time, thereby improving the detection precision. After the model is identified, configuration parameters can be automatically selected through past period data configuration, so that detection is more convenient.
Drawings
FIG. 1 is a block diagram of a detector applicable to various transformer windings according to an embodiment of the present application;
FIG. 2 is a circuit diagram of a basic detection loop of a frequency response analysis method provided by an embodiment of the present application;
FIG. 3 is a block diagram of a detector applicable to various transformer windings, provided by an embodiment of the present application, having a specific structure of a display operation module;
FIG. 4 is a block diagram of a detector applicable to various transformer windings, provided in an embodiment of the present application, with a specific structure of an identification module;
FIG. 5 is a block diagram of a detector applicable to a variety of transformer windings, provided in another embodiment of the present application, having a specific configuration of an identification module;
FIG. 6 is a block diagram of a detector with identification module specific structure applicable to various transformer windings according to still another embodiment of the present application;
FIG. 7 is a schematic view of a first clamp according to an embodiment of the present application;
FIG. 8 is an enlarged schematic view of the portion A of FIG. 7 according to an embodiment of the present application;
fig. 9 is a block diagram of a detector applicable to various transformer windings, which is provided by an embodiment of the present application and further has a specific structure of a winding deformation comparison module.
In the figure: 1. a round hole; 2. a frame; 3. a motor; 4. a rotating shaft; 5. a self-driven wheel; 6. an air bag.
Detailed Description
For a further understanding of the application, its features and advantages, reference is now made to the following examples, which are illustrated in the accompanying drawings.
The structure of the present application will be described in detail with reference to the accompanying drawings.
Referring to fig. 1 and 2, the detector applicable to multiple transformer windings provided in the embodiments of the present application includes a winding deformation detection module and a display operation module, where the winding deformation detection module includes a hardware unit and a software unit, the hardware unit is provided with a main control board, the main control board is connected with an excitation end, a reference end, a response end and a first communication end interface, the excitation end and the response end are connected with a same first clamp through a wire electrical signal, the reference end is connected with a second clamp through a wire electrical signal, the hardware unit further includes a power module and a ground end, and the display operation module is connected with the first communication end interface through a signal, and further includes:
the two position calibration modules are respectively and fixedly connected to the first clamp and the second clamp and are used for measuring and/or adjusting the clamping positions of the first clamp and the second clamp;
the second communication end interface is in signal connection with the main control board;
the identification module is in signal connection with the second communication end interface, and can at least identify the type of the transformer to be detected and identify the positions of the first clamp and the second clamp;
the memory is connected with the main control board in a signal way and at least can be used for identifying the type of the transformer to be detected, the configuration parameters of the corresponding transformer and the connection position information of the clamp on the corresponding transformer.
The application uses a frequency response method to detect whether the transformer winding is deformed or not, and the detection principle is as follows:
under the action of voltage with higher frequency, each winding of the transformer can be regarded as a passive linear double-port network formed by distributed parameters such as linear resistance, inductance (mutual inductance), capacitance and the like, the internal characteristics of the passive linear double-port network can be described by a transfer function H (j omega), if the winding is deformed, the distributed parameters such as inductance, capacitance and the like in the winding are necessarily changed, so that the zero point and the pole of the equivalent network transfer function H (j omega) are changed, and the frequency response characteristic of the network is changed. The deformation of the winding of the transformer is detected by a frequency response analysis method, namely, the amplitude-frequency response characteristics of each winding of the transformer are detected, the detection results are compared longitudinally or transversely, and the possible deformation of the winding of the transformer is judged according to the difference of the amplitude-frequency response characteristics. The amplitude-frequency response characteristic of the transformer winding is obtained by using the frequency scanning mode shown in fig. 2. The frequency f (angular frequency omega=2pi f) of the external Shi Zhengxian wave excitation source VS is continuously changed, the ratio of the signal amplitudes of the response terminal voltage V2 and the excitation terminal voltage V1 at different frequencies is measured, and the amplitude-frequency response curve of the winding under the conditions of the designated excitation terminal and the response terminal is obtained. In the figure: l, K and C respectively represent the distributed inductance, the distributed capacitance and the distributed capacitance to the ground of the unit length of the winding, V1 and V2 are the excitation terminal voltage and the response terminal voltage of the equivalent network respectively, VS is the sine wave excitation signal source voltage, RS is the signal source output impedance, and R is the matching resistance.
During detection, the model identification module firstly identifies the model of the transformer to be detected, so that configuration parameters during detection are automatically adjusted according to the model of the transformer, and through the setting, on one hand, time and labor are saved, on the other hand, manual misoperation can be avoided, and the method is also suitable for direct operation of zero-base people; then, a user clamps the clamp on the detection end of the transformer winding, and the display operation module is used for operation, so that the winding deformation detection module is used for detecting the transformer winding; during specific detection, the amplitude-frequency response characteristic of the transformer winding is related to the position of the tap changer, and the tap changer is ensured to be positioned at the same position during each detection; and because the detection signal is weaker, all wiring should be stable and reliable. The identification module identifies the connection position of the first clamp and the second clamp, and then drives the position calibration module to adjust the positions of the clamps, so that the connection positions of the clamps on the same model are the same, wiring can be stable and reliable, and the detection accuracy is further improved; through the arrangement, the memory records the connection position data, identifies the model, automatically adjusts the connection position, and enables the connection positions to be the same each time, thereby improving the detection precision. After the model is identified, configuration parameters can be automatically selected through past period data configuration, so that detection is more convenient.
Referring to fig. 3, the display operation module includes an operating system, a display unit and an input unit; the operating system is connected with the main control board through the first communication interface signal, and the software unit runs on the operating system; the display unit is in signal connection with the operating system, a man-machine operation interface is arranged in the display unit, the man-machine operation interface is used for completing control and scheduling of test items of the tested piece, processing and judging corresponding results of the tested piece, giving test results, and providing a hellp file for testing troubleshooting; the input unit is connected with the operating system in a signal manner and is used for inputting an operation instruction.
The display operation module is set as a computer, a display screen of the computer is used as a display unit of the application, a keyboard and a mouse of the computer are used as input units of the application, and an operating system of the computer is used as an operating system of the application. It should be noted that the operating system, the display unit and the input unit are not limited to the above-mentioned configuration, and the operating system, the display unit and the input unit may be integrated on the same device, or may be respectively provided on corresponding devices, and are connected to each other through signals, thereby implementing the above-mentioned functions, which is not limited herein.
Referring to fig. 4, the identification module includes an appearance identification unit for identifying an appearance of the transformer, so as to determine an appearance damage degree of the transformer.
Referring to fig. 5, the identification module includes a wiring auxiliary identification unit for identifying whether the wiring of the clamp and the transformer is correct.
Referring to fig. 6, the recognition module further includes a voice reminding unit, where the voice reminding unit is in signal connection with the main control board and is used for reminding a user of correctly matching the clamp and the testing end of the winding.
For example, when the preparation work is finished, the user picks up the clamp to be clamped on the test end of the winding, the voice reminding unit identifies the picked clamp, and a prompt is sent to the user, for example, the prompt content is: the clamp is clamped at the upper end (or the lower end) of the Nth connecting end (from left to right), so that wiring is assisted, and the fault rate of wiring is reduced.
The method for identifying which clamp is picked up is as follows:
scheme one: the clamp is provided with a sensing module (such as a displacement sensor), the picked clamp is identified through the sensing module, and then a user is prompted to connect the clamp to a corresponding connection position through a voice reminding module.
And in the second scheme, the identification module is used for directly identifying which clamp is taken up.
Referring to fig. 7 and 8, a circular hole 1 is formed in a clamping arm of the clamp;
the position calibration module comprises a frame 2, a motor 3, a rotating shaft 4 and a self-driven wheel 5;
the motor 3 is fixedly connected to the outer surface of the first clamp and/or the second clamp through the frame 2, the output end of the motor 3 is fixedly connected with the rotating shaft 4, the other end of the rotating shaft 4 is connected with the self-driven wheel 5, and part of the self-driven wheel 5 extends into the clamp arm of the clamp through the round hole 1;
the outer peripheral surface of the self-driven wheel 5 is provided with an annular groove, and an air bag 6 is fixedly connected inside the annular groove.
When the position of the clamp needs to be adjusted, the clamp can be rotated or moved up and down through the movement of the self-driven wheel 5, the motor 3 drives the self-driven wheel 5 to rotate, when the self-driven wheel 5 is transversely arranged, the self-driven wheel 5 rotates to drive the clamp to rotate, when the self-driven wheel 5 is vertically arranged, the self-driven wheel 5 rotates to drive the clamp to move up and down, and the self-driven wheel 5 can also tilt to rotate, so that the rotation and the up and down movement are completed simultaneously.
The function of the balloon 6 is: when the air bag 6 is inflated, the clamp can be spread, so that the clamp can be moved conveniently; when the movement is finished, the air bag 6 is deflated, and the clamp can be firmly connected with the connecting end of the winding, so that the signal is not weakened.
Further, the identification module (for example, a camera) is installed on the first clamp and/or the second clamp, on one hand, which clamp is clamped can be judged through the picture transformation identified by the identification module, so that the connection of the clamps is assisted by the voice reminding unit; on the other hand, the identification module can be moved by moving the clamp, so that the identification range is conveniently enlarged, and the identification effect is improved; and moreover, the position of the clamp can be conveniently and reversely judged through the picture of the identification module, so that the position calibration module is conveniently informed to calibrate the position of the clamp.
Referring to fig. 9, the main control board is connected with a third communication port; the winding deformation comparison module is in signal connection with the third communication end interface and comprises a normal interval setting unit, a numbering unit, a data callback unit and a damage comparison unit; the normal interval setting unit is used for presetting intervals of deformation parameters of the transformer windings of corresponding models, for example, intervals formed by amplitude-frequency response characteristic curves of the two transformer windings, and judging whether the detected amplitude-frequency response characteristic curves of the transformer windings exceed the range of the intervals or not so as to judge whether the deformation exceeds a preset value or not; the numbering unit is used for carrying out image recognition on each device, numbering, and automatically calling out date-of-arrival data through the data callback unit after the same transformer is recognized, so that the damage degree and the damage rate are conveniently compared through the damage comparison unit; the damage comparison unit comprises a timing subunit for calculating time and assisting in comparing damage rate.
The main technical indexes of the detector applicable to various transformer windings are as follows:
measuring speed: single phase winding for 1 min-2 min
Output voltage: automatic adjustment during Vpp-20V testing
Output impedance: 50 omega
Input impedance: 1MΩ (50 Ω matching resistor in response channel)
Sweep frequency range: 100Hz-2MHz
Frequency accuracy: 0.005%
Sweep frequency mode: the frequency sweep interval and the point number can be set arbitrarily by linearity or logarithm
The curves show: amplitude-frequency curve
The dynamic range of measurement is wide: -120 dB-20 dB
Supply voltage: AC220 V.+ -. 10%
The application also provides a case for accommodating the detector applicable to various transformer windings.
The working principle of the application is as follows:
during detection, the model identification module firstly identifies the model of the transformer to be detected, so that configuration parameters during detection are automatically adjusted according to the model of the transformer, and through the setting, on one hand, time and labor are saved, on the other hand, manual misoperation can be avoided, and the method is also suitable for direct operation of zero-base people; then, a user clamps the clamp on the detection end of the transformer winding, and the display operation module is used for operation, so that the winding deformation detection module is used for detecting the transformer winding; during specific detection, the amplitude-frequency response characteristic of the transformer winding is related to the position of the tap changer, and the tap changer is ensured to be positioned at the same position during each detection; and because the detection signal is weaker, all wiring should be stable and reliable. The identification module identifies the connection position of the first clamp and the second clamp, and then drives the position calibration module to adjust the positions of the clamps, so that the connection positions of the clamps on the same model are the same, wiring can be stable and reliable, and the detection accuracy is further improved; through the arrangement, the memory records the connection position data, identifies the model, automatically adjusts the connection position, and enables the connection positions to be the same each time, thereby improving the detection precision. After the model is identified, configuration parameters can be automatically selected through past period data configuration, so that detection is more convenient.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the application, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides a detector that applicable in multiple transformer winding, includes winding deformation detection module and shows operation module, winding deformation detection module includes hardware unit and software unit, the hardware unit is equipped with the main control board, main control board signal connection has excitation end, reference end, response end and first communication end interface, excitation end and response end have same first clamp through wire electrical signal connection, the reference end has the second clamp through wire electrical signal connection, just the hardware unit still includes power module and earth connection, show operation module signal connection in first communication end interface, its characterized in that still includes:
the two position calibration modules are respectively and fixedly connected to the first clamp and the second clamp and are used for measuring and/or adjusting the clamping positions of the first clamp and the second clamp;
the second communication end interface is in signal connection with the main control board;
the identification module is in signal connection with the second communication end interface, and can at least identify the type of the transformer to be detected and identify the positions of the first clamp and the second clamp;
the memory is connected with the main control board in a signal way and at least can be used for identifying the type of the transformer to be detected, the configuration parameters of the corresponding transformer and the connection position information of the clamp on the corresponding transformer.
2. A detector adaptable for use with a plurality of transformer windings as set forth in claim 1, wherein:
the display operation module comprises an operation system, a display unit and an input unit;
the operating system is connected with the main control board through the first communication interface signal, and the software unit runs on the operating system;
the display unit is in signal connection with the operating system, a man-machine operation interface is arranged in the display unit, the man-machine operation interface is used for completing control and scheduling of test items of the tested piece, processing and judging corresponding results of the tested piece, giving test results, and providing a hellp file for testing troubleshooting;
the input unit is connected with the operating system in a signal manner and is used for inputting an operation instruction.
3. A detector adaptable for use with a plurality of transformer windings as set forth in claim 1, wherein: the identification module comprises an appearance identification unit which is used for identifying the appearance of the transformer so as to judge the appearance damage degree of the transformer.
4. A detector adaptable for use with a plurality of transformer windings as set forth in claim 1, wherein: the identification module comprises a wiring auxiliary identification unit which is used for identifying whether the wiring of the clamp and the transformer is correct.
5. A detector adaptable for use with a plurality of transformer windings as set forth in claim 1, wherein: the recognition module further comprises a voice reminding unit which is connected with the main control board in a signal mode and used for reminding a user of correctly matching the clamp and the testing end of the winding.
6. A detector adaptable for use with a plurality of transformer windings as set forth in claim 1, wherein:
a round hole (1) is formed in a clamping arm of the clamp;
the position calibration module comprises a frame (2), a motor (3), a rotating shaft (4) and a self-driven wheel (5);
the motor (3) is fixedly connected to the outer surface of the first clamp and/or the second clamp through the frame (2), the output end of the motor (3) is fixedly connected with the rotating shaft (4), the other end of the rotating shaft (4) is connected to the self-driven wheel (5), and part of the self-driven wheel (5) extends into the clamp arm of the clamp through the round hole (1);
the outer peripheral surface of the self-driven wheel (5) is provided with an annular groove, and an air bag (6) is fixedly connected inside the annular groove.
7. A detector adaptable for use with a plurality of transformer windings as set forth in claim 1, wherein:
the identification module is mounted on the first clamp and/or the second clamp.
8. A detector adaptable for use with a plurality of transformer windings as set forth in claim 1, wherein:
the main control board is connected with a third communication terminal interface in a signal manner;
the winding deformation comparison module is in signal connection with the third communication end interface and comprises a normal interval setting unit, a numbering unit, a data callback unit and a damage comparison unit;
the normal interval setting unit is used for presetting intervals of deformation parameters of the transformer windings of corresponding types, and judging whether the deformation exceeds a preset value or not by detecting whether the amplitude-frequency response characteristic curves of the transformer windings exceed the range of the intervals or not in the intervals formed by the amplitude-frequency response characteristic curves of the two transformer windings;
the numbering unit is used for carrying out image recognition on each device, numbering, and automatically calling out date-of-arrival data through the data callback unit after the same transformer is recognized, so that the damage degree and the damage rate are conveniently compared through the damage comparison unit; the damage comparison unit comprises a timing subunit for calculating time and assisting in comparing damage rate.
9. A chassis, characterized in that: a detector for accommodating a plurality of transformer windings as claimed in any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310678205.4A CN116736194B (en) | 2023-06-09 | 2023-06-09 | Detector applicable to various transformer windings and chassis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310678205.4A CN116736194B (en) | 2023-06-09 | 2023-06-09 | Detector applicable to various transformer windings and chassis |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116736194A true CN116736194A (en) | 2023-09-12 |
| CN116736194B CN116736194B (en) | 2024-02-27 |
Family
ID=87916246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310678205.4A Active CN116736194B (en) | 2023-06-09 | 2023-06-09 | Detector applicable to various transformer windings and chassis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116736194B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010038290A1 (en) * | 2000-05-04 | 2001-11-08 | Coffeen Larry T. | System and method for off-line impulse frequency response analysis test |
| US6466034B1 (en) * | 2001-05-29 | 2002-10-15 | Powertech Labs Inc. | Transformer winding movement detection by high frequency internal response analysis |
| CN103217579A (en) * | 2012-12-28 | 2013-07-24 | 富阳市供电局 | On-line monitoring system of transformer winding |
| CN204882787U (en) * | 2015-07-02 | 2015-12-16 | 贵阳供电局 | Can realize transformer winding deformation test system of multiple field connection mode |
| CN106338237A (en) * | 2015-07-10 | 2017-01-18 | 华北电力大学（保定） | Transformer winding deformation detection method based on frequency response impedance method |
| CN207181589U (en) * | 2017-08-07 | 2018-04-03 | 华北电力大学 | It is a kind of to be used for the device being monitored powered to deformation of transformer winding |
| CN113204205A (en) * | 2021-04-08 | 2021-08-03 | 北京首钢自动化信息技术有限公司 | Intelligent clamp debugging device and system |
| CN113983944A (en) * | 2021-11-03 | 2022-01-28 | 国网辽宁省电力有限公司抚顺供电公司 | Transformer winding deformation detection device |
| CN114442021A (en) * | 2021-12-01 | 2022-05-06 | 国网山东省电力公司物资公司 | Power transformer detection system calibration device and method |
| CN115656578A (en) * | 2022-12-13 | 2023-01-31 | 石家庄科林电气设备有限公司 | Auxiliary device for measuring electrical performance of transformer and wiring control method |
-
2023
- 2023-06-09 CN CN202310678205.4A patent/CN116736194B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010038290A1 (en) * | 2000-05-04 | 2001-11-08 | Coffeen Larry T. | System and method for off-line impulse frequency response analysis test |
| US6466034B1 (en) * | 2001-05-29 | 2002-10-15 | Powertech Labs Inc. | Transformer winding movement detection by high frequency internal response analysis |
| CN103217579A (en) * | 2012-12-28 | 2013-07-24 | 富阳市供电局 | On-line monitoring system of transformer winding |
| CN204882787U (en) * | 2015-07-02 | 2015-12-16 | 贵阳供电局 | Can realize transformer winding deformation test system of multiple field connection mode |
| CN106338237A (en) * | 2015-07-10 | 2017-01-18 | 华北电力大学（保定） | Transformer winding deformation detection method based on frequency response impedance method |
| CN207181589U (en) * | 2017-08-07 | 2018-04-03 | 华北电力大学 | It is a kind of to be used for the device being monitored powered to deformation of transformer winding |
| CN113204205A (en) * | 2021-04-08 | 2021-08-03 | 北京首钢自动化信息技术有限公司 | Intelligent clamp debugging device and system |
| CN113983944A (en) * | 2021-11-03 | 2022-01-28 | 国网辽宁省电力有限公司抚顺供电公司 | Transformer winding deformation detection device |
| CN114442021A (en) * | 2021-12-01 | 2022-05-06 | 国网山东省电力公司物资公司 | Power transformer detection system calibration device and method |
| CN115656578A (en) * | 2022-12-13 | 2023-01-31 | 石家庄科林电气设备有限公司 | Auxiliary device for measuring electrical performance of transformer and wiring control method |
Non-Patent Citations (1)
| Title |
|---|
| 李成祥 等: "基于脉冲频率响应法的变压器绕组变形带电检测仪", 电力自动化设备, vol. 38, no. 1, pages 110 - 115 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116736194B (en) | 2024-02-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7355394B2 (en) | Apparatus and method of dynamically measuring thickness of a layer of a substrate | |
| CN108761214B (en) | Self-adaptive surface magnetic field measurement platform and measurement method | |
| CN111457953A (en) | Automatic calibration detection system and method for rotary encoder | |
| CN107799194A (en) | Intelligent rod position threshold value is adjusted and Performance Testing method | |
| CN116736194B (en) | Detector applicable to various transformer windings and chassis | |
| CN103782146A (en) | Sonar method and apparatus for determining material interfaces in wheel servicing equipment | |
| CN116184182B (en) | GIS isolating switch mechanical state identification method based on curve similarity | |
| CN106556811A (en) | A kind of high-precision magnetic survey method for testing and device | |
| CN108120952A (en) | A kind of electric energy meter stationary magnetic field influences experimental rig | |
| CN208013404U (en) | A kind of electric energy meter stationary magnetic field influence experimental rig | |
| CN210604864U (en) | Coil turn-to-turn insulation detection device | |
| KR20050084002A (en) | Circuit pattern inspection instrument and pattern inspecting method | |
| CN114818023B (en) | Method and system for identifying electrified state of three-phase cable | |
| CN212321738U (en) | Detection apparatus for sensor magnetic field noise immunity | |
| CN113820536A (en) | Zinc oxide arrester live-line detection method based on wireless synchronous current measurement technology | |
| CN111856382B (en) | Indirect measuring equipment for sensitivity of high-frequency pulse sensor | |
| CN211401065U (en) | Permanent magnet motor Hall element detection equipment | |
| CN216209826U (en) | Fault finding device of mutual inductor | |
| CN110275063A (en) | Current vortex retarder coil resistance test macro and its test method | |
| CN214041707U (en) | Cable joint partial discharge positioning and recognizing device based on TMR magnetic sensor | |
| CN111486809B (en) | Detection equipment for height sensor of air suspension system | |
| CN113587956B (en) | Rotary transformer wiring sequence detection method and system | |
| CN111856383B (en) | Indirect measurement method for sensitivity of high-frequency pulse sensor | |
| CN216791114U (en) | Battery aluminium foil R angle fluorescence thickness measurement auxiliary device | |
| CN112180311B (en) | Calibration and positioning method for station-area partial discharge detection |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |