CN210604864U - Coil turn-to-turn insulation detection device - Google Patents
Coil turn-to-turn insulation detection device Download PDFInfo
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Abstract
The utility model provides a coil interturn insulation detection device belongs to fault detection technical field, and coil interturn insulation detection device includes: a pulse applicator, a signal processing device and a comparator; the pulse applicator is electrically connected with the coil to be detected and used for applying a pulse signal to the coil to be detected and drawing and receiving characteristic information of the coil to be detected; the signal processing device is electrically connected with the pulse applicator, receives the characteristic information and draws a characteristic curve; a denoising circuit and a conversion circuit are arranged in the signal processing device; the denoising circuit is used for denoising the characteristic curve; the conversion circuit is used for solving a characteristic area value of the characteristic curve and the coordinate and a standard area value of a standard curve and the coordinate corresponding to the coil to be detected under the pulse signal; the comparator is electrically connected with the signal processing device and is used for comparing the characteristic area value with the standard area value. The utility model provides a pair of coil interturn insulation detection device simple structure to it is higher to detect the precision.
Description
Technical Field
The utility model belongs to the technical field of the fault detection, more specifically say, relate to a coil interturn insulation detection device.
Background
With the increase of the operating life of the high-voltage circuit breaker, the risk of hidden troubles caused by insulation aging of a control coil in the circuit breaker is increased continuously. The reduction of the insulation of the coil further causes the reduction of the actual number of turns of the coil of the electromagnet, so that the attraction capacity of the electromagnet is reduced, and finally, the control failure of the circuit breaker occurs, and the circuit breaker cannot be switched on or switched off. The circuit breaker electromagnet loop uses a direct current 220V power supply for power supply, and the actual control operation time is less than 70ms, so that more useful characteristic data needs to be extracted in a shorter time. When the coil to be detected is detected, interference of various types of signals exists, the structure of the existing detection device is complex, and the detection precision is low.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a coil interturn insulation detection device aims at solving because the interference of other signals, and the usability of signal reduces, detects the relatively poor problem of precision.
In order to achieve the above object, the utility model adopts the following technical scheme: provided is a coil turn-to-turn insulation detection device, including:
the pulse applicator is electrically connected with the coil to be detected and used for applying a pulse signal to the coil to be detected and drawing and receiving characteristic information of the coil to be detected;
the signal processing device is electrically connected with the pulse applicator, receives the characteristic information and draws a characteristic curve; a denoising circuit and a conversion circuit are arranged in the signal processing device; the denoising circuit is used for denoising the characteristic curve; the conversion circuit is used for solving a characteristic area value of the characteristic curve and the coordinate and a standard area value of a standard curve and the coordinate corresponding to the coil to be detected under the pulse signal; and
and the comparator is electrically connected with the signal processing device and is used for comparing the characteristic area value with the standard area value.
As another embodiment of the application, the pulse applicator is provided with a parameter selection module, and the parameter selection module is used for determining the pulse time required by the coil to be tested.
As another embodiment of the present application, the signal processing apparatus further includes:
a CPU electrically connected with the pulse applicator, for controlling the pulse applicator and receiving the characteristic information;
the frequency and voltage setting end is electrically connected with the CPU, and the CPU is used for controlling the pulse applicator to output the corresponding pulse signal; and
and the characteristic curve display is electrically connected with the CPU and used for drawing the characteristic curve according to the characteristic information.
As another embodiment of the present application, the controlled end of the parameter selection module is electrically connected to the control end of the CPU.
As another embodiment of the present application, the signal processing apparatus includes:
the input port of the de-noising circuit is electrically connected with the pulse applicator and is used for receiving the characteristic information and de-noising the characteristic information;
the input end of the positioning module is connected with the output end of the denoising circuit and receives a curve after denoising is finished and draws the characteristic curve; the positioning module is used for positioning the characteristic curve and the standard curve in the same coordinate and setting the same signal zero point; and
and one end of the conversion circuit is connected with the output end of the positioning module, and the other end of the conversion circuit is electrically connected with the comparator and is used for solving the characteristic area value and the standard area value.
As another embodiment of the present application, the coil turn-to-turn insulation detecting apparatus further includes:
the receiving module is electrically connected with the pulse applicator and is used for receiving two different characteristic information of the pulse applicator and drawing two different characteristic curves;
the difference making module is electrically connected with the receiving module and used for solving the difference of the characteristic curve to determine a curve to be measured and solving the difference of the standard curve to determine a calibration curve; and
and one end of the integration module is electrically connected with the difference making module, and the other end of the integration module is electrically connected with the comparator and is used for respectively calculating the area values of the curve to be measured and the calibration curve and the coordinates and calculating errors.
As another embodiment of the present application, the pulse applicator is provided with a plurality of data outlets; the receiving module is provided with input ports which correspond to the data output ports one to one and are electrically connected.
As another embodiment of the present application, the difference module is electrically connected to a plurality of output ports of the receiving module.
As another embodiment of the present application, the comparator is provided with a plurality of data input ports, and the data input ports are electrically connected to the corresponding signal processing device and the corresponding integration module, respectively.
As another embodiment of the present application, the pulse applicator includes:
the signal generator is electrically connected with one end of the coil to be detected and is used for applying the pulse signal to the coil to be detected; and
and the signal collector is electrically connected with the signal generator and is used for receiving the characteristic information generated by the coil to be detected and transmitting the characteristic information to the signal processing device.
The utility model provides a coil interturn insulation detection device has the advantages that compared with the prior art, the utility model discloses coil interturn insulation detection device pulse applicator is connected with the measured coil electricity, is used for applying pulse signal to the measured coil and drawing and receiving the characteristic information of the measured coil; the signal processing device is electrically connected with the pulse applicator, receives the characteristic information and draws a characteristic curve; a denoising circuit and a conversion circuit are arranged in the signal processing device; the denoising circuit is used for denoising the characteristic curve; the conversion circuit is used for solving a characteristic area value of the characteristic curve and the coordinate and a standard area value of a standard curve and the coordinate corresponding to the coil to be detected under the pulse signal; the comparator is electrically connected with the signal processing device and is used for comparing the characteristic area value with the standard area value. In order to reduce the interference of various types of signals when the inter-turn insulation state of the coil is detected, improve the detection accuracy and accurately reflect the insulation condition of the detected coil under different pulse signals, and meanwhile, because the interference signal has small change in the pulse signals, the interference signal can be regarded as an approximately constant noise signal added on a characteristic curve. In order to eliminate the interference of noise signals as much as possible, the judgment of turn-to-turn faults of the coil can be realized by calculating the area values of the denoised curve and the coordinate and the area values of the standard curve and the coordinate and comparing the two area values, and the detection of the turn-to-turn faults of the coil can be realized by the detection device only by a pulse applicator, a signal processing device and a comparator, so that the insulation detection device has a simple structure and higher detection precision.
Drawings
Fig. 1 is a flowchart of a coil turn-to-turn insulation detection apparatus according to an embodiment of the present invention;
fig. 2 is a flowchart of a parameter selection module and a CPU provided in an embodiment of the present invention;
fig. 3 is a flowchart of a signal processing apparatus according to an embodiment of the present invention;
fig. 4 is a flowchart of a receiving module, a difference module and an integration module according to an embodiment of the present invention.
In the figure: 1. a pulse applicator; 101. a parameter selection module; 2. a signal processing device; 201. a CPU; 202. a frequency and voltage setting terminal; 203. a characteristic curve display; 204. a de-noising circuit; 205. a positioning module; 206. a conversion circuit; 3. a comparator; 4. a receiving module; 5. a difference making module; 6. and an integration module.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, a coil turn-to-turn insulation detecting device according to the present invention will now be described. Coil interturn insulation detection device includes: a pulse applicator 1, a signal processing device 2 and a comparator 3; the pulse applicator 1 is electrically connected with a coil to be tested and used for applying a pulse signal to the coil to be tested and drawing and receiving characteristic information of the coil to be tested; the signal processing device 2 is electrically connected with the pulse applicator 1, receives the characteristic information and draws a characteristic curve; a denoising circuit 204 and a conversion circuit 206 are arranged in the signal processing device 2; the denoising circuit 204 is configured to denoise the characteristic curve; the conversion circuit 206 is configured to obtain a characteristic area value of the characteristic curve and the coordinate and a standard area value of a standard curve and a coordinate corresponding to the coil under test under the pulse signal; the comparator 3 is electrically connected with the signal processing device 2 and is used for comparing the characteristic area value with the standard area value.
The utility model provides a coil interturn insulation detection device has the advantages that compared with the prior art, the utility model discloses coil interturn insulation detection device pulse applicator 1 is connected with the measured coil electricity, is used for applying pulse signal to the measured coil and draws and receives the characteristic information of the measured coil; the signal processing device 2 is electrically connected with the pulse applicator 1, receives the characteristic information and draws a characteristic curve; a denoising circuit 204 and a conversion circuit 206 are arranged in the signal processing device 2; the denoising circuit 204 is used for denoising the characteristic curve; the conversion circuit 206 is configured to obtain a characteristic area value of the characteristic curve and the coordinate and a standard area value of a standard curve and the coordinate corresponding to the coil under test under the pulse signal; the comparator 3 is electrically connected to the signal processing device 2 for comparing the characteristic area value with the standard area value. In order to reduce the interference of various types of signals when the inter-turn insulation state of the coil is detected, improve the detection accuracy and accurately reflect the insulation condition of the detected coil under different pulse signals, and meanwhile, because the interference signal has small change in the pulse signals, the interference signal can be regarded as an approximately constant noise signal added on a characteristic curve. In order to eliminate the interference of noise signals as much as possible, the judgment of turn-to-turn faults of the coil can be realized by calculating the area values of the denoised curve and the coordinate and the area values of the standard curve and the coordinate and comparing the two area values, and the detection device can realize the detection of the turn-to-turn faults of the coil only by the pulse applicator 1, the signal processing device 2 and the comparator 3, and has a simple structure and higher detection precision.
The utility model discloses in, can include in the signal processing device 2 for oscilloscope, oscilloscope includes: the analog channel transmits analog signals output by the oscilloscope probe to the analog-to-digital conversion module, and the analog signals are processed by the analog-to-digital conversion module and then displayed by the oscilloscope.
The utility model discloses in, be provided with the device of making an uproar in the signal processing device 2, the circuit 204 of making an uproar is made an uproar including making an uproar the circuit 204 in the device of making an uproar, and the circuit 204 of making an uproar includes detection circuit, first amplifier circuit, second amplifier circuit, makes an uproar circuit 204 and isolating circuit. The detection circuit is connected with the first amplification circuit, the first amplification circuit is connected with the second amplification circuit, the second amplification circuit is connected with the denoising circuit 204, and the denoising circuit 204 is connected with the isolation circuit. The detection circuit comprises a photoelectric detector of APD1, a resistor R1 and a capacitor C1. The positive terminal of the photodetector is connected to the HV high voltage supply through a resistor R1, and the positive terminal of the photodetector is also connected to ground through a capacitor C1. The first amplification circuit includes a chip of type OPA 356. The isolation circuit comprises a radio frequency transformer with the model TC 4-1W. And a logic operation module is arranged in the arithmetic unit, and a processing method of wavelet and moving average value method and a port for signal operation and generation are programmed in the logic operation module.
The utility model discloses in, the characteristic area value and the standard area value of 3 received signal processing apparatus of contrast ware 2. The comparator 3 is internally provided with a comparison module which can compare the characteristic area value with the standard area value and judge through a threshold value.
The utility model discloses in, orientation module 205 is the location chip, can fix a position the zero point position of curvilinear starting point in same coordinate system through this location chip. The difference module 5 is a difference chip, and a difference circuit is arranged in the operation chip and can be used for making a difference between the two signals.
As a specific embodiment of the coil turn-to-turn insulation detection device provided by the present invention, the pulse applying device 2 is provided with a parameter selection module 101, and the parameter selection module 101 is used for determining the pulse time required by the coil to be detected. The inductance of the whole circuit breaker coil is reduced due to the reduction of the number of turns of the detected coil of the circuit breaker, so that the oscillation frequency of the whole vibration circuit is changed; and because the induced electromotive force generated by other coils except the open-circuit turn in the open-circuit turn can cause large circulation in the short-circuit turn, the circulation can generate a demagnetizing field in the coil, so that the total magnetic field in the whole circuit breaker control coil is reduced, the inductance of the circuit breaker control coil is reduced, and the oscillation frequency of the whole oscillation circuit is changed. The circulating current in the short-circuited turns causes an increase in the losses of the control coil of the circuit breaker, thus accelerating the voltage and current decay rate of the entire oscillating circuit. The existing of the short-circuit turns destroys the original magnetic potential relation of each layer of coil of the circuit breaker control coil, which causes the distribution relation of current in the circuit breaker control coil, so that the outgoing line in the circuit breaker control coil penetrates through the circulating current of the whole coil, the loss of the circuit breaker control coil can be increased due to the existence of the circulating current, and the voltage and current attenuation speed of the whole oscillating circuit is accelerated. When the short-circuit turn exists in the control coil of the circuit breaker, the change of the oscillation frequency of voltage or current and the change of the attenuation speed are caused in a pulse voltage method experiment, so the insulation of the turn of the control coil of the circuit breaker can be additionally judged by observing the wave-shaped conditions of the voltage at two ends of the coil or the current flowing through the coil.
The utility model discloses in, can be when appling pulse signal to the coil that is surveyed, can install voltage sensor and current sensor on the coil that is surveyed in advance, voltage sensor' S model can be FV-EV-1500P1O10, and the current sensor model can be HOVS-01S 0. The voltage sensor and the current sensor are connected with a signal acquisition and processing device, the model of the signal acquisition and processing device can be an NI data acquisition card and a signal amplifier, and the acquired waveform data can be directly connected into Labview for display and subsequent analysis and processing.
As a specific embodiment of the coil turn-to-turn insulation detection device provided in the present invention, please refer to fig. 2, the pulse applying device 1 includes: a CPU201, a frequency and voltage setting terminal 202, and a characteristic curve display 203; the CPU201 is electrically connected to the pulse applicator 1, for controlling the pulse applicator 1, and receiving the characteristic information; the frequency and voltage setting end 202 is electrically connected with the CPU201, and the CPU201 is used for controlling the pulse applicator 1 to output corresponding pulse signals; the characteristic curve display 203 is electrically connected to the CPU201, and is configured to draw a characteristic curve based on the characteristic information.
The utility model discloses in, for setting up perfect LC oscillation circuit, adopt the interturn insulation detection of high-voltage pulse control technique control coil, realize being surveyed the drawing of coil's VTT characteristic curve, compare with standard curve through detecting being surveyed coil VTT characteristic curve, and then judge the ageing degree and the interturn insulating state of being surveyed the coil, can realize that the electromagnet coil among the high-voltage circuit breaker control circuit opens circuit and the detection of the ageing defect of coil, avoid leading to the accident of control failure because transformer substation's high-voltage circuit breaker's control coil interturn insulation trouble or operation are ageing.
As a specific implementation manner of the coil turn-to-turn insulation detection device provided by the present invention, please refer to fig. 2, the controlled end of the parameter selection module 101 is electrically connected to the control end of the CPU 201. The CPU201 further controls the parameter selection module 101 to enable the pulse applicator 1 to output different pulse signals, thereby facilitating a more comprehensive understanding of the insulation condition of the coil under test.
As a specific implementation manner of the coil turn-to-turn insulation detection device provided in the present invention, please refer to fig. 3, the signal processing device 2 includes: a denoising circuit 204, a positioning module 205, and a conversion circuit 206; the input port of the de-noising circuit 204 is electrically connected with the pulse applicator 1 and is used for receiving the characteristic information and de-noising the characteristic information; the input end of the positioning module 205 is connected with the output end of the denoising circuit 204, receives the curve after denoising is completed, and draws the characteristic curve; the positioning module 205 is configured to position the characteristic curve and the standard curve in the same coordinate, and set the same signal zero point; the conversion circuit 206 has one end connected to the output end of the positioning module 205 and the other end electrically connected to the comparator 3, and is configured to calculate the characteristic area value and the standard area value. The positioning module 205 is configured to position the characteristic curve and the standard curve within the same coordinate, and set the same signal zero point.
As a specific implementation manner of the coil turn-to-turn insulation detection device provided in the present invention, please refer to fig. 4, further including: the device comprises a receiving module 4, a difference making module 5 and an integrating module 6; the receiving module 4 is electrically connected with the pulse applicator 1 and is used for receiving two different characteristic information of the pulse applicator 1 and drawing two different characteristic curves; and one end of the integration module 6 is electrically connected with the difference making module 5, and the other end of the integration module is electrically connected with the comparator 3, and is used for respectively calculating the area values of the curve to be detected and the calibration curve and the coordinates and calculating errors. One end of the integrating module 6 is electrically connected with the difference making module 5, and the other end is electrically connected with the comparator 3, and is used for calculating the area values of the curve to be measured and the calibration curve and the coordinates and calculating the area error. Two different characteristic messages of the pulse applicator 1 are received by the receiving module 4 and two different characteristic curves are drawn. And the difference making module 5 is used for solving the difference of the characteristic curve to determine a curve to be measured, solving the difference of the standard curve in the same method and determining a calibration curve.
The utility model discloses in, first characteristic information and second characteristic information can be including being surveyed the coil and record current value and corresponding test time under certain voltage, and first characteristic curve and second characteristic curve drawn by first characteristic information and second characteristic information are the wave form that the abscissa is the current value for test time, and the ordinate is the current value. The utility model discloses in, can adopt high-voltage pulse output and short-term test technique, acquire the characteristic curve of being surveyed the coil, realize being surveyed the drawing of the characteristic curve of coil. And in order to eliminate the interference of noise on the characteristic curve, two different pulse signals are set, so that two different characteristic information and two different characteristic curves are generated.
The utility model discloses in, set for first pulse signal's specific numerical value by pulse applier 1, applyed first pulse signal to the coil under test. First characteristic information generated by the coil to be tested is collected within a preset pulse time, and a first characteristic curve is drawn according to the collected first characteristic information. Setting a second pulse signal with a specific value different from that of the first pulse signal, applying the second pulse signal to the coil to be tested, collecting second characteristic information generated by the coil to be tested in the same pulse time, and drawing a second characteristic curve according to the collected second characteristic information.
As a specific embodiment of the coil turn-to-turn insulation detection device provided by the present invention, the pulse applicator 1 is provided with a plurality of data output ports; the receiving module 4 is provided with input ports which correspond to the data output ports one to one and are electrically connected.
The utility model discloses in, in order to guarantee not burnt or damage by the measured coil, exert a very short pulse signal of time to the measured coil at needs, consequently still need adjust pulse output time when exerting pulse signal. By selecting the model information of the coil to be detected, the heating power which can be born by the coil to be detected is searched according to the model information, and then the output time of the pulse signal is adjusted. The pulse signal output time is generally within 10ms, and in order to quickly detect the characteristic information within a few milliseconds, a microsecond ARM single chip microcomputer can be applied to realize the acquisition and the recording of the characteristic information. Different labeling curves can be pre-stored according to the signal information. For example, the standard curve may be obtained by performing a test with a range of 100V between dc pulse voltages of 300V to 1500V, and then determining the degree of the insulation fault by calculating the percentage of the area error and the frequency error between the to-be-tested curve and the calibration curve of the tested coil.
As a specific embodiment of the coil turn-to-turn insulation detection device provided by the present invention, the differential module 5 is electrically connected to a plurality of output ports of the receiving module 4. And a plurality of signal input ports are arranged on the difference making module 5 and used for receiving the characteristic curve obtained by drawing the signal from the receiving module 4, a difference making circuit is arranged in the difference making module 5, the difference of the characteristic curves is obtained, and the curve to be measured is determined.
As a specific embodiment of the coil turn-to-turn insulation detection device provided in the present invention, the pulse applying unit 1 includes: a signal generator and a signal collector; the signal generator is electrically connected with one end of the coil to be detected and is used for applying a pulse signal to the coil to be detected; the signal collector is electrically connected with the signal generator and used for receiving the characteristic information generated by the coil to be detected and transmitting the characteristic information to the signal processing device 2. Different pulse signals are generated through the signal generator, and the signal collector collects characteristic information to finish the collection work.
As a specific implementation mode of the coil turn-to-turn insulation detection device provided by the utility model, the comparator 3 is an upper computer with an early warning function.
The utility model discloses in, can use the early warning function in the Labview system to 10% for example, when exceeding preset threshold value, the Labview system can carry out the early warning to be convenient for confirm insulating fault's degree. Different levels can be set at the same time, for example: the level exceeding the threshold value is an unavailable level, the level exceeding the threshold value is an available level in the range of 0-5%, and the level exceeding the threshold value is a standby level in the range of 5-10%, so that the degree of the insulation fault is displayed more visually.
The utility model discloses in, the detectable is fallen the frequency value of curve after the noise removal and standard curve, also can calculate the frequency value of curve and calibration curve that awaits measuring, the parameter information that shows the signal that can be clearer through the comparative frequency value. The characteristic curve of the control coil of the circuit breaker often exhibits a secondary phase coupling mode. The spectrum suppresses all phase information, is phase blind, and cannot handle the large number of non-gaussian random signals present in the signal. Although the bispectrum can detect the coupling phenomenon, the calculation amount is large, the estimation precision is low, and the bispectrum is difficult to be applied to engineering practice. The noise signal in the control coil in the circuit breaker can be regarded as a Gaussian random signal, and in order to effectively and quickly identify the frequency value on the curve, the slice bispectrum of a denoising curve and a standard curve can be solved, wherein the slice bispectrum is a third-order cumulant diagonal slice and effectively inhibits a non-second phase coupling harmonic term in the signal. The degree of the insulation fault can be displayed more intuitively by measuring the spectral values of the measured curve and the standard curve, namely the maximum frequency value, and comparing the maximum frequency value through the judgment module. The degree of failure in the measured and standard curves can also be indicated by the two frequency ranges and the total area of the frequencies. The frequency values of the slice bispectrum of the de-noising curve and the standard curve can be obtained by programming in MATLAB.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. Coil interturn insulation detection device, its characterized in that includes:
the pulse applicator is electrically connected with the coil to be detected and used for applying a pulse signal to the coil to be detected and drawing and receiving characteristic information of the coil to be detected;
the signal processing device is electrically connected with the pulse applicator, receives the characteristic information and draws a characteristic curve; a denoising circuit and a conversion circuit are arranged in the signal processing device; the denoising circuit is used for denoising the characteristic curve; the conversion circuit is used for solving a characteristic area value of the characteristic curve and the coordinate and a standard area value of a standard curve and the coordinate corresponding to the coil to be detected under the pulse signal; and
and the comparator is electrically connected with the signal processing device and is used for comparing the characteristic area value with the standard area value.
2. The coil turn-to-turn insulation detection device according to claim 1, wherein the pulse applicator is provided with a parameter selection module for determining a pulse time required for the coil under test.
3. The coil turn-to-turn insulation detecting device according to claim 2, wherein the signal processing means further comprises:
a CPU electrically connected with the pulse applicator, for controlling the pulse applicator and receiving the characteristic information;
the frequency and voltage setting end is electrically connected with the CPU, and the CPU is used for controlling the pulse applicator to output the corresponding pulse signal; and
and the characteristic curve display is electrically connected with the CPU and used for drawing the characteristic curve according to the characteristic information.
4. The apparatus according to claim 3, wherein the controlled terminal of the parameter selection module is electrically connected to the control terminal of the CPU.
5. The coil turn-to-turn insulation detecting device according to claim 1, wherein the signal processing means comprises:
the input port of the de-noising circuit is electrically connected with the pulse applicator and is used for receiving the characteristic information and de-noising the characteristic information;
the input end of the positioning module is connected with the output end of the denoising circuit and receives a curve after denoising is finished and draws the characteristic curve; the positioning module is used for positioning the characteristic curve and the standard curve in the same coordinate and setting the same signal zero point; and
and one end of the conversion circuit is connected with the output end of the positioning module, and the other end of the conversion circuit is electrically connected with the comparator and is used for solving the characteristic area value and the standard area value.
6. The coil turn-to-turn insulation detection device of claim 1, further comprising:
the receiving module is electrically connected with the pulse applicator and is used for receiving two different characteristic information of the pulse applicator and drawing two different characteristic curves;
the difference making module is electrically connected with the receiving module and used for solving the difference of the characteristic curve to determine a curve to be measured and solving the difference of the standard curve to determine a calibration curve; and
and one end of the integration module is electrically connected with the difference making module, and the other end of the integration module is electrically connected with the comparator and is used for respectively calculating the area values of the curve to be measured and the calibration curve and the coordinates and calculating errors.
7. The coil turn-to-turn insulation detection device according to claim 6, wherein the pulse applicator is provided with a plurality of data output ports; the receiving module is provided with input ports which correspond to the data output ports one to one and are electrically connected.
8. The apparatus according to claim 6, wherein the differentiating module is electrically connected to the plurality of outlets of the receiving module.
9. The apparatus according to claim 6, wherein the comparator is provided with a plurality of data input ports, and the data input ports are electrically connected to the corresponding signal processing apparatus and the integrating module, respectively.
10. The coil inter-turn insulation detection device of claim 1, wherein the pulse applicator comprises:
the signal generator is electrically connected with one end of the coil to be detected and is used for applying the pulse signal to the coil to be detected; and
and the signal collector is electrically connected with the signal generator and is used for receiving the characteristic information generated by the coil to be detected and transmitting the characteristic information to the signal processing device.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110456242A (en) * | 2019-08-30 | 2019-11-15 | 国家电网有限公司 | Coil turn-to-turn insulation detecting method and device |
| CN113295972A (en) * | 2021-04-14 | 2021-08-24 | 广东电网有限责任公司广州供电局 | Insulation defect detection method, system, device, computer equipment and storage medium |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110456242A (en) * | 2019-08-30 | 2019-11-15 | 国家电网有限公司 | Coil turn-to-turn insulation detecting method and device |
| CN113295972A (en) * | 2021-04-14 | 2021-08-24 | 广东电网有限责任公司广州供电局 | Insulation defect detection method, system, device, computer equipment and storage medium |
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