CN116299112A - Device, method and application for simulating and calibrating partial discharge of high-voltage cable - Google Patents
Device, method and application for simulating and calibrating partial discharge of high-voltage cable Download PDFInfo
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Abstract
The invention discloses a device, a method and application for simulating and calibrating partial discharge of a high-voltage cable, and relates to the technical field of detection equipment; the device comprises a first controller, a generator, a detection device, a detected partial discharge measuring instrument, a second controller and a cable, wherein the first controller controls the generator to generate and transmit corresponding transmitting signals, the detection device obtains the transmitting signals and transmits the transmitting signals to the second controller, the detected partial discharge measuring instrument obtains corresponding receiving signals and transmits the corresponding receiving signals to the second controller, and when the second controller obtains the receiving signals transmitted by the detected partial discharge measuring instrument and the transmitting signals transmitted by the detection device, the receiving signals and the transmitting signals are compared to obtain the measuring error of the detected partial discharge measuring instrument; the application comprises that a receiving signal obtained by the detected partial discharge measuring instrument is compared with a transmitting signal obtained by the detecting device, so as to obtain the measuring error of the detected partial discharge measuring instrument, and the measuring error is used for calibrating the detected partial discharge measuring instrument.
Description
Technical Field
The invention relates to the technical field of detection equipment, in particular to a device, a method and application for simulating and calibrating partial discharge of a high-voltage cable.
Background
The writer searches for TA_ALL (calibration OR check OR judgment) AND TACD_ALL (high-voltage AND cable AND (discharge device OR analog device) AND (calibration OR check OR judgment) detection device), AND the closer prior art scheme is obtained.
The application publication number is CN114325239A, and the name is fault location simulation device and fault location precision verification method. The device comprises a signal source, an analog circuit and a fault test unit; the signal source is an internal signal source or an external signal source; the analog circuit comprises a plurality of RLGC subunits connected in series in turn, each series node comprising a parallel interface configured to access the fault test element configured to adjust parameters of the RLGC subunits; the fault test element is active impedance or passive impedance. The simulation method has the advantages that the simulation is carried out on the equivalent impedance of the cable and the line, the simulation is divided into a plurality of RLGC subunits which are connected in series, and the parameter and the quantity of the RLGC subunits can be flexibly used for the change of the length of the cable and the line and the simulation of fault points, so that the technical problems that in the prior art, the physical simulation equipment of the line is incomplete, the simulated fault content is single, and the flexibility is poor are solved.
The authorized bulletin number is CN100410673C, and the name is a cable fault preset point detection method and device. The method comprises the steps of connecting an output end of a high-voltage direct current pulse generating unit and an audio signal injection unit at one end of a discharging unit, connecting the other end of the discharging unit with one end of a fault cable, discharging the fault cable through the discharging unit by the high-voltage direct current pulse generating unit, superposing an audio pulse direct current on the cable on the basis of an ignited arc by the audio signal injection unit in a time period when the arc stably exists, receiving a magnetic field radiated by the audio pulse direct current through the cable by an audio magnetic field receiving device moving along a cable laying path, and judging whether the audio magnetic field receiving device is positioned in front of or behind the fault point according to the characteristic that the amplitude of the audio magnetic field is greatly different before and after the fault point, so that preliminary rough measurement and preset point detection of the fault point of the cable is rapidly carried out. The method can be widely applied to the field of fault detection of various cables.
In combination with the two patent documents and the prior art solutions, the inventors have found that the following technical problems exist in the prior art solutions.
The measurement data of the partial discharge detection device is used as an important index for judging the operation condition of the primary device, whether the measurement data is correct or not directly influences the correct judgment on the operation condition of the primary device, if the primary device has a partial discharge problem, the partial discharge detection device cannot find or monitor low data precision, and the measurement data cannot be considered by technicians, so that the small hidden danger of the primary device is often developed into an accident of the primary device; the primary equipment has no partial discharge problem, and on-line monitoring equipment frequently generates abnormal data, misleading technicians to carry out unnecessary power failure maintenance, which can cause waste of manpower, material resources and financial resources and also has influence on the stability and reliability of the operation of the power grid.
Currently, most partial discharge measuring instruments, whether pointer type or digital type, use the height measurement of partial discharge pulse exponential waves to measure the apparent discharge.
The height of the exponential wave is related to the attenuation coefficient of the measuring device, which is related to the time constant, and the bandwidth of the pulse wave of the normal partial discharge is as small as approximately 30MHz, so the requirement on the measuring loop is high. Even the connection can affect the measurement result, so that the partial discharge measuring instrument needs to be calibrated regularly, and the partial discharge measuring instrument calibrating device can calibrate the partial discharge measuring instrument comprehensively according to the standard regulation, so that the partial discharge measuring instrument is an important safety test instrument with wide application.
In the product type test and the factory inspection project, particularly in the production license certification, the device can be used for measuring and calibrating a plurality of products needing partial discharge test, such as wires and cables, power transformers, power capacitors, motors, lightning arresters, current transformers, voltage transformers, reactors, electric switches, electric insulation devices and the like, and has wide application. Is helpful for improving the safety performance and the product quality of the electric products.
Problems and considerations in the prior art:
how to solve the technical problem of calibrating the detected partial discharge measuring instrument.
Disclosure of Invention
The invention aims to solve the technical problem of calibrating a detected partial discharge measuring instrument by providing a device, a method and application for simulating and calibrating the partial discharge of a high-voltage cable.
In order to solve the technical problems, the invention adopts the following technical scheme: the device for simulating and calibrating the partial discharge of the high-voltage cable comprises a cable partial discharge simulation device, wherein the cable partial discharge simulation device comprises a first controller, a generator, a detection device, a detected partial discharge measuring instrument, a second controller and a cable, the first controller is connected with the cable partial discharge simulation device, the generator is used for simulating partial discharge signals, the detection device is used for obtaining the generator simulated partial discharge signals, the detected partial discharge measuring instrument is connected with one part of the cable, a sensor of the detected partial discharge measuring instrument is connected with the other part of the cable, the detection device is connected with the second controller and communicated with the second controller, and the detected partial discharge measuring instrument is connected with the second controller and communicated with the second controller.
The further technical proposal is that: the calibration module is used for controlling the generator to generate and transmit corresponding transmitting signals when the first controller obtains signal generating instructions, the detection device obtains transmitting signals and transmits the transmitting signals to the second controller, when the sensor of the detected partial discharge measuring instrument senses the transmitting signals transmitted by the cable, the detected partial discharge measuring instrument forms corresponding receiving signals and transmits the corresponding receiving signals to the second controller, and when the second controller obtains the receiving signals transmitted by the detected partial discharge measuring instrument and the transmitting signals transmitted by the detection device, the receiving signals and the transmitting signals are compared to obtain the measuring errors of the detected partial discharge measuring instrument.
The further technical proposal is that: the cable is a communication coaxial cable, the cable partial discharge simulation device is used for simulating signals of a first quadrant and a third quadrant, and the first controller and the second controller are both single-chip computers.
The further technical proposal is that: the first controller is connected with a generator for simulating partial discharge signals in a wired mode, the detection device is connected with the second controller in a wired mode, and the detected partial discharge measuring instrument is connected with the second controller in a wired mode.
The device comprises a calibration module, wherein the calibration module is a program module and is used for controlling a generator to generate and transmit corresponding transmitting signals when a first controller obtains a signal generation instruction, a detection device obtains transmitting signals and transmits the transmitting signals to a second controller, when a sensor of a detected partial discharge measuring instrument senses the transmitting signals transmitted by a cable, the detected partial discharge measuring instrument forms corresponding receiving signals and transmits the corresponding receiving signals to the second controller, and when the second controller obtains the receiving signals transmitted by the detected partial discharge measuring instrument and the transmitting signals transmitted by the detection device, the receiving signals and the transmitting signals are compared to obtain the measuring errors of the detected partial discharge measuring instrument.
A method for simulating and calibrating the partial discharge of high-voltage cable includes such steps as generating signal by the first controller, generating and transmitting the corresponding transmitting signal by the control generator, generating the receiving signal by the detection unit, generating the corresponding receiving signal by the detection unit, and comparing the receiving signal with the transmitting signal to obtain the measuring error of the partial discharge measuring instrument.
The further technical proposal is that: in the step of calibrating, after obtaining a measurement error of the partial discharge meter to be inspected by comparing the received signal and the transmitted signal, the partial discharge meter to be inspected is calibrated by using the obtained measurement error.
An apparatus for high voltage cable partial discharge analog calibration includes a memory, a processor, and a computer program stored in the memory and executable on the processor, which processor implements the respective steps described above when executing the computer program.
An apparatus for high voltage cable partial discharge analog calibration includes a computer readable storage medium storing a computer program which when executed by a processor performs the corresponding steps described above.
The use of the high-voltage cable partial discharge simulation comprises the steps of comparing a receiving signal obtained by a detected partial discharge measuring instrument with a transmitting signal obtained by a detecting device, obtaining a measuring error of the detected partial discharge measuring instrument and calibrating the detected partial discharge measuring instrument.
The beneficial effects of adopting above-mentioned technical scheme to produce lie in:
first, a device of high tension cable partial discharge simulation calibration includes cable partial discharge analogue means, and cable partial discharge analogue means includes interconnect's first controller and is used for simulating the generator of partial discharge signal, still including the detection device that is used for obtaining generator analog partial discharge signal, the partial discharge measuring apparatu of being examined, the second controller and the cable that are used for the calibration, generator and detection device are connected with one place of cable, and the sensor of the partial discharge measuring apparatu of being examined is connected with another place of cable, and detection device is connected and communicates with the second controller, and the partial discharge measuring apparatu of being examined is connected and communicates with the second controller. According to the technical scheme, the received signal obtained by the detected partial discharge measuring instrument is compared with the emission signal obtained by the detection device, so that the measurement error of the detected partial discharge measuring instrument is obtained, and the detected partial discharge measuring instrument is calibrated.
The second, a high-voltage cable partial discharge analog calibration device comprises a calibration module, wherein the calibration module is a program module and is used for controlling a generator to generate and transmit corresponding transmitting signals when a first controller obtains a signal generation instruction, a detection device obtains transmitting signals and transmits the transmitting signals to a second controller, when a sensor of a detected partial discharge measuring instrument senses the transmitting signals transmitted by a cable, the detected partial discharge measuring instrument forms corresponding receiving signals and transmits the corresponding receiving signals to the second controller, and when the second controller obtains the receiving signals transmitted by the detected partial discharge measuring instrument and the transmitting signals transmitted by the detection device, the receiving signals and the transmitting signals are compared to obtain the measuring errors of the detected partial discharge measuring instrument. According to the technical scheme, the received signal obtained by the detected partial discharge measuring instrument is compared with the emission signal obtained by the detection device, so that the measurement error of the detected partial discharge measuring instrument is obtained, and the detected partial discharge measuring instrument is calibrated.
Third, a method for simulating and calibrating the partial discharge of the high-voltage cable is based on the device and comprises the steps of calibrating, when a first controller obtains a signal generation instruction, a control generator generates and transmits a corresponding transmission signal, a detection device obtains the transmission signal and transmits the transmission signal to a second controller, when a sensor of a detected partial discharge measuring instrument senses the transmission signal transmitted by the cable, the detected partial discharge measuring instrument forms a corresponding receiving signal and transmits the corresponding receiving signal to the second controller, and when the second controller obtains the receiving signal transmitted by the detected partial discharge measuring instrument and the transmission signal transmitted by the detection device, the receiving signal and the transmission signal are compared to obtain the measuring error of the detected partial discharge measuring instrument. According to the technical scheme, the received signal obtained by the detected partial discharge measuring instrument is compared with the emission signal obtained by the detection device, so that the measurement error of the detected partial discharge measuring instrument is obtained, and the detected partial discharge measuring instrument is calibrated.
Fourth, an application of high voltage cable partial discharge simulation, comparing the received signal obtained by the detected partial discharge measuring instrument with the emission signal obtained by the detecting device, obtaining the measuring error of the detected partial discharge measuring instrument, and calibrating the detected partial discharge measuring instrument.
See the description of the detailed description section.
Drawings
FIG. 1 is a schematic block diagram of signal processing of a cable partial discharge simulation device of the present invention;
FIG. 2 is a data flow diagram of a cable partial discharge simulation device of the present invention;
FIG. 3 is a functional block diagram of embodiment 4 of the present invention;
fig. 4 is a schematic block diagram of embodiment 5 of the present invention.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, but the present application may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present application is not limited to the specific embodiments disclosed below.
Example 1:
the invention discloses a device for simulating and calibrating partial discharge of a high-voltage cable, which comprises a cable partial discharge simulator, a detection device for obtaining a generator simulated partial discharge signal, a detected partial discharge measuring instrument, a second controller for calibrating, a cable and a calibration module, wherein the cable partial discharge simulator comprises a first controller and a generator for simulating the partial discharge signal, the cable is a communication coaxial cable, the cable partial discharge simulator is used for simulating signals of a first quadrant and a third quadrant, the first controller and the second controller are both single-chip computers, and the calibration module is a program module.
The generator and the detection device are connected with one part of the cable, and the sensor of the detected partial discharge measuring instrument is connected with the other part of the cable.
The first controller is in wired connection and communication with a generator for simulating partial discharge signals, the detection device is in wired connection and communication with the second controller, and the detected partial discharge measuring instrument is in wired connection and communication with the second controller.
And the calibration module is used for controlling the generator to generate and transmit corresponding transmitting signals when the first controller obtains a signal generating instruction, the detection device obtains transmitting signals and transmits the transmitting signals to the second controller, the detected partial discharge measuring instrument forms corresponding receiving signals and transmits the corresponding receiving signals to the second controller when the sensor of the detected partial discharge measuring instrument senses the transmitting signals transmitted by the cable, and the second controller obtains the receiving signals transmitted by the detected partial discharge measuring instrument and the transmitting signals transmitted by the detection device, and the receiving signals and the transmitting signals are compared to obtain the measuring errors of the detected partial discharge measuring instrument.
The cable partial discharge simulation device, the first controller, the generator for simulating the partial discharge signal, the detection device for obtaining the generator simulated partial discharge signal, the detected partial discharge measuring instrument, the second controller for calibration, the cable and the corresponding communication connection technology are not described in detail in the prior art.
Example 2:
the invention discloses a device for simulating and calibrating partial discharge of a high-voltage cable, which comprises a calibration module, wherein the calibration module is a program module.
And the calibration module is used for controlling the generator to generate and transmit corresponding transmitting signals when the first controller obtains a signal generating instruction, the detection device obtains transmitting signals and transmits the transmitting signals to the second controller, the detected partial discharge measuring instrument forms corresponding receiving signals and transmits the corresponding receiving signals to the second controller when the sensor of the detected partial discharge measuring instrument senses the transmitting signals transmitted by the cable, and the second controller obtains the receiving signals transmitted by the detected partial discharge measuring instrument and the transmitting signals transmitted by the detection device, and the receiving signals and the transmitting signals are compared to obtain the measuring errors of the detected partial discharge measuring instrument.
Example 3:
the invention discloses a method for simulating and calibrating partial discharge of a high-voltage cable, which is based on the device of embodiment 1 and comprises the following steps:
calibration of
When the first controller obtains a signal generation instruction, the generator is controlled to generate and transmit a corresponding transmission signal, the detection device obtains the transmission signal and transmits the transmission signal to the second controller, when the sensor of the detected partial discharge measuring instrument senses the transmission signal transmitted by the cable, the detected partial discharge measuring instrument forms a corresponding receiving signal and transmits the corresponding receiving signal to the second controller, and when the second controller obtains the receiving signal transmitted by the detected partial discharge measuring instrument and the transmission signal transmitted by the detection device, the receiving signal and the transmission signal are compared to obtain the measurement error of the detected partial discharge measuring instrument;
and calibrating the detected partial discharge measuring instrument by using the obtained measurement error.
Example 4:
as shown in fig. 3, the present invention discloses a device for high voltage cable partial discharge analog calibration, comprising a memory, a processor and a computer program stored in the memory and executable on the processor, which processor implements the steps of embodiment 3 when executing the computer program.
Example 5:
as shown in fig. 4, the present invention discloses a computer-readable storage medium storing a computer program which, when executed by a processor, implements the steps in embodiment 3.
Example 6:
the invention discloses a use of high-voltage cable partial discharge simulation, which is based on the device of the embodiment 1, and comprises the steps of comparing a receiving signal obtained by a detected partial discharge measuring instrument with a transmitting signal obtained by a detecting device, obtaining a measuring error of the detected partial discharge measuring instrument and calibrating the detected partial discharge measuring instrument.
Compared with the embodiment, the calibration module may also be a hardware module unit, and the corresponding method steps in the program module are implemented by adopting a hardware logic unit in the prior art, so that the implemented technical scheme is the prior art and is not repeated herein.
The concept of the present application:
aiming at the detection of partial discharge of the high-voltage and high-voltage cable, the research of a standard source of the cable partial discharge simulation device is developed, the typical defects and faults of the urban power transmission cable are simulated, a high-frequency band electric detection instrument of the power cable can be verified, the detection accuracy of the instrument is ensured, and the normal use of equipment is necessary.
The cable insulation is sliced and sampled, and the insulation internal conditions are analyzed and researched, so that insulation inspection such as cable insulation slicing and sampling, insulation slicing internal impurity inspection, insulation thermal extension test and the like can be completed.
The high-voltage cable partial discharge analog calibration system comprises: (1) cable partial discharge simulation technique; (2) checking technology of the cable high-frequency partial discharge device.
(1) Cable partial discharge simulation technology
The communication coaxial cable, the T-shaped joint, the one-type joint and the BNC bifurcation wire pair simulate cable terminals, the cable middle joint is connected, and the BNC bifurcation wire and the communication coaxial cable are used for connecting the cable middle joint with a cable armor cross-connection transposition box or a cable armor direct grounding box at the armor connection position of the cable middle joint.
The sensor can be arranged at any position of the analog circuit and connected with the partial discharge test system, and the analog partial discharge signal generator can inject pulse signals into the analog cable from any position to simulate partial discharge generated at the point, so that a series of related analog test items for partial discharge detection and partial discharge positioning can be carried out.
A cable partial discharge simulation device is developed, and various partial discharge signals of a power cable are simulated according to the design of the physical power cable. The cable partial discharge simulation device can simulate nine high-frequency signals, simulate the high-frequency signals of the first quadrant and the third quadrant, and set the size of discharge points according to different signals. And judging the accuracy of the partial discharge detection device by analyzing the signal receiving result of the partial discharge detection device.
(2) Verification technology for cable high-frequency partial discharge device
As shown in fig. 1, the cable partial discharge signal characteristic quantity is analyzed. And through the specific signal sent by the cable partial discharge simulation device, the partial discharge device is accurately checked.
Based on the actual cable, physical defects are set for cable partial discharge simulation, the performance of parameters such as partial discharge quantity and the like is discrete, repeatability and stability are poor, the partial discharge defects have accumulation effect, a verification test is carried out, and the initial set value is further deviated. After the high-voltage cable partial discharge device is used for a long time, the partial discharge measurement and positioning performance of the high-voltage cable partial discharge device needs to be verified, and the method for performing cable partial discharge simulation based on actual cables is set up to have physical defects, so that the accurate verification of the high-voltage cable partial discharge device cannot be realized. Through the research of the characteristics of the partial discharge signals, the simulation of the partial discharge of the cable in a specific form is realized, and the accurate verification of the high-voltage cable partial discharge measuring device is realized.
The signal generator emits high-frequency signal, which is detected by the high-frequency partial discharge detector and compared with the partial discharge amount displayed by the detected partial discharge measuring instrument, so as to obtain the measuring error of the detected partial discharge measuring instrument. And (3) checking the performances and functions of the detected instrument, such as sensitivity, linearity, stability, acquisition continuity, diagnosis and identification.
The method comprises the following specific steps:
(1) The cable partial discharge device is used for detecting and simulating, the cable partial discharge simulation device is developed, various partial discharge faults of the power cable are simulated truly according to the design of the entity power cable, insulation defects caused by insulation wetting, external force damage, insulation aging and the like of the power cable terminal, the middle head and the body are simulated, and simulation of cable faults with different voltage levels, structures and lengths is realized. The start voltage, the extinction voltage and the discharge intensity of each discharge signal are controlled. The built-in pulse current method related coupling and checking unit can synchronously detect the partial discharge level of the experimental device.
(2) Simulation of partial discharge signal characteristic quantity of high-frequency power transmission cable
As shown in fig. 2, the cable partial discharge signal characteristic quantity is analyzed. And through the specific signal sent by the cable partial discharge simulation device, the partial discharge device is accurately checked.
Based on the actual cable, physical defects are set for cable partial discharge simulation, the performance of parameters such as partial discharge quantity and the like is discrete, repeatability and stability are poor, the partial discharge defects have accumulation effect, a verification test is carried out, and the initial set value is further deviated. After the high-voltage cable partial discharge device is used for a long time, the partial discharge measurement and positioning performance of the high-voltage cable partial discharge device needs to be verified, and the method for performing cable partial discharge simulation based on actual cables is set up to have physical defects, so that the accurate verification of the high-voltage cable partial discharge device cannot be realized. By researching the characteristics of the partial discharge signals, the parameters and performance characteristics of the cable are realized, and the specific position and the specific partial discharge quantity are simulated. The method for accurately verifying the high-voltage cable partial discharge measuring device is achieved.
After the application is run for a period of time internally, the feedback of field technicians is beneficial in that:
the high-frequency band electric detection instrument of the power cable is verified, the detection accuracy of the instrument is guaranteed, and the normal use of equipment is guaranteed.
The device comprises a first controller, a generator, a detection device, a detected partial discharge measuring instrument, a second controller and a cable. The method comprises the steps that a first controller controls a generator to generate and transmit corresponding transmitting signals, a detecting device obtains transmitting signals and transmits the transmitting signals to a second controller, a detected partial discharge measuring instrument obtains corresponding receiving signals and transmits the corresponding receiving signals to the second controller, and when the second controller obtains receiving signals transmitted by the detected partial discharge measuring instrument and transmitting signals transmitted by the detecting device, measuring errors of the detected partial discharge measuring instrument are obtained by comparing the receiving signals and the transmitting signals. The application comprises that a receiving signal obtained by the detected partial discharge measuring instrument is compared with a transmitting signal obtained by the detecting device, so as to obtain the measuring error of the detected partial discharge measuring instrument, and the measuring error is used for calibrating the detected partial discharge measuring instrument.
First, a device of high tension cable partial discharge simulation calibration includes cable partial discharge analogue means, and cable partial discharge analogue means includes interconnect's first controller and is used for simulating the generator of partial discharge signal, still including the detection device that is used for obtaining generator analog partial discharge signal, the partial discharge measuring apparatu of being examined, the second controller and the cable that are used for the calibration, generator and detection device are connected with one place of cable, and the sensor of the partial discharge measuring apparatu of being examined is connected with another place of cable, and detection device is connected and communicates with the second controller, and the partial discharge measuring apparatu of being examined is connected and communicates with the second controller.
The method comprises the steps of comparing a received signal obtained by the detected partial discharge measuring instrument with a transmitted signal obtained by the detecting device to obtain a measuring error of the detected partial discharge measuring instrument, thereby realizing calibration of the detected partial discharge measuring instrument.
The second, a high-voltage cable partial discharge analog calibration device comprises a calibration module, wherein the calibration module is a program module and is used for controlling a generator to generate and transmit corresponding transmitting signals when a first controller obtains a signal generation instruction, a detection device obtains transmitting signals and transmits the transmitting signals to a second controller, when a sensor of a detected partial discharge measuring instrument senses the transmitting signals transmitted by a cable, the detected partial discharge measuring instrument forms corresponding receiving signals and transmits the corresponding receiving signals to the second controller, and when the second controller obtains the receiving signals transmitted by the detected partial discharge measuring instrument and the transmitting signals transmitted by the detection device, the receiving signals and the transmitting signals are compared to obtain the measuring errors of the detected partial discharge measuring instrument.
The method comprises the steps of comparing a received signal obtained by the detected partial discharge measuring instrument with a transmitted signal obtained by the detecting device to obtain a measuring error of the detected partial discharge measuring instrument, thereby realizing calibration of the detected partial discharge measuring instrument.
Third, a method for simulating and calibrating the partial discharge of the high-voltage cable is based on the device and comprises the steps of calibrating, when a first controller obtains a signal generation instruction, a control generator generates and transmits a corresponding transmission signal, a detection device obtains the transmission signal and transmits the transmission signal to a second controller, when a sensor of a detected partial discharge measuring instrument senses the transmission signal transmitted by the cable, the detected partial discharge measuring instrument forms a corresponding receiving signal and transmits the corresponding receiving signal to the second controller, and when the second controller obtains the receiving signal transmitted by the detected partial discharge measuring instrument and the transmission signal transmitted by the detection device, the receiving signal and the transmission signal are compared to obtain the measuring error of the detected partial discharge measuring instrument.
The method comprises the steps of comparing a received signal obtained by the detected partial discharge measuring instrument with a transmitted signal obtained by the detecting device to obtain a measuring error of the detected partial discharge measuring instrument, thereby realizing calibration of the detected partial discharge measuring instrument.
Fourth, an application of high voltage cable partial discharge simulation, comparing the received signal obtained by the detected partial discharge measuring instrument with the emission signal obtained by the detecting device, obtaining the measuring error of the detected partial discharge measuring instrument, and calibrating the detected partial discharge measuring instrument.
At present, the technical scheme of the invention has been subjected to pilot-scale test, namely, smaller-scale test of products before large-scale mass production; after the pilot test is completed, the use investigation of the user is performed in a small range, and the investigation result shows that the user satisfaction is higher; now, the preparation of the formal production of the product for industrialization is started.
Claims (10)
1. The utility model provides a high tension cable partial discharge simulation calibration's device, includes cable partial discharge simulation device, and cable partial discharge simulation device includes interconnect's first controller and is used for simulating the generator of partial discharge signal, its characterized in that: the device comprises a generator, a local discharge measuring instrument, a second controller and a cable, wherein the generator is connected with one part of the cable, a sensor of the local discharge measuring instrument is connected with the other part of the cable, the detection device is connected with the second controller and communicated with the second controller, and the local discharge measuring instrument is connected with the second controller and communicated with the second controller.
2. The device for simulating calibration of partial discharge of a high voltage cable according to claim 1, wherein: the calibration module is used for controlling the generator to generate and transmit corresponding transmitting signals when the first controller obtains signal generating instructions, the detection device obtains transmitting signals and transmits the transmitting signals to the second controller, when the sensor of the detected partial discharge measuring instrument senses the transmitting signals transmitted by the cable, the detected partial discharge measuring instrument forms corresponding receiving signals and transmits the corresponding receiving signals to the second controller, and when the second controller obtains the receiving signals transmitted by the detected partial discharge measuring instrument and the transmitting signals transmitted by the detection device, the receiving signals and the transmitting signals are compared to obtain the measuring errors of the detected partial discharge measuring instrument.
3. The device for simulating calibration of partial discharge of a high voltage cable according to claim 1, wherein: the cable is a communication coaxial cable, the cable partial discharge simulation device is used for simulating signals of a first quadrant and a third quadrant, and the first controller and the second controller are both single-chip computers.
4. The device for simulating calibration of partial discharge of a high voltage cable according to claim 1, wherein: the first controller is connected with a generator for simulating partial discharge signals in a wired mode, the detection device is connected with the second controller in a wired mode, and the detected partial discharge measuring instrument is connected with the second controller in a wired mode.
5. The utility model provides a high voltage cable partial discharge simulation calibration's device which characterized in that: the device comprises a calibration module, wherein the calibration module is a program module and is used for controlling a generator to generate and transmit corresponding transmitting signals when a first controller obtains a signal generation instruction, a detection device obtains transmitting signals and transmits the transmitting signals to a second controller, when a sensor of a detected partial discharge measuring instrument senses transmitting signals transmitted by a cable, the detected partial discharge measuring instrument forms corresponding receiving signals and transmits the corresponding receiving signals to the second controller, and when the second controller obtains receiving signals transmitted by the detected partial discharge measuring instrument and transmitting signals transmitted by the detection device, the receiving signals and the transmitting signals are compared to obtain measuring errors of the detected partial discharge measuring instrument.
6. A method for simulating and calibrating partial discharge of a high-voltage cable is characterized by comprising the following steps of: the device based on claim 1, comprising the step of calibrating, when the first controller obtains a signal generation instruction, the control generator generates and transmits a corresponding transmission signal, the detection device obtains the transmission signal and transmits the transmission signal to the second controller, when the sensor of the detected partial discharge measuring instrument senses the transmission signal transmitted by the cable, the detected partial discharge measuring instrument forms a corresponding receiving signal and transmits the corresponding receiving signal to the second controller, when the second controller obtains the receiving signal transmitted by the detected partial discharge measuring instrument and the transmission signal transmitted by the detection device, the receiving signal and the transmission signal are compared, and the measuring error of the detected partial discharge measuring instrument is obtained.
7. The method for simulating calibration of partial discharge of a high voltage cable of claim 6, wherein: in the step of calibrating, after obtaining a measurement error of the partial discharge meter to be inspected by comparing the received signal and the transmitted signal, the partial discharge meter to be inspected is calibrated by using the obtained measurement error.
8. An apparatus for high voltage cable partial discharge analog calibration comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized by: the processor, when executing the computer program, implements the corresponding steps in claim 6 or 7.
9. An apparatus for high voltage cable partial discharge analog calibration comprising a computer readable storage medium storing a computer program, characterized in that: the computer program realizes the respective steps in claim 6 or 7 when executed by a processor.
10. The utility model provides a high voltage cable partial discharge simulation's use which characterized in that: the method comprises the steps of comparing a received signal obtained by a detected partial discharge measuring instrument with a transmitted signal obtained by a detection device to obtain a measuring error of the detected partial discharge measuring instrument, and calibrating the detected partial discharge measuring instrument.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211641866.1A CN116299112A (en) | 2022-12-20 | 2022-12-20 | Device, method and application for simulating and calibrating partial discharge of high-voltage cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211641866.1A CN116299112A (en) | 2022-12-20 | 2022-12-20 | Device, method and application for simulating and calibrating partial discharge of high-voltage cable |
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| CN116299112A true CN116299112A (en) | 2023-06-23 |
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| CN202211641866.1A Pending CN116299112A (en) | 2022-12-20 | 2022-12-20 | Device, method and application for simulating and calibrating partial discharge of high-voltage cable |
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| CN (1) | CN116299112A (en) |
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- 2022-12-20 CN CN202211641866.1A patent/CN116299112A/en active Pending
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