CN113009301A - Device and method for rapidly evaluating host of ultrahigh frequency partial discharge detection equipment - Google Patents
Device and method for rapidly evaluating host of ultrahigh frequency partial discharge detection equipment Download PDFInfo
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Abstract
The application provides a device and a method for rapidly evaluating a host of ultrahigh frequency partial discharge detection equipment, which comprises the following steps: function signal generator, signal cable, waveform generator, high frequency signal cable and equipment to be tested, function signal generator passes through the signal cable and connects waveform generator, waveform generator passes through the high frequency signal cable and connects equipment to be tested, function signal generator produce trigger signal, and will trigger signal passes through signal cable and transmits to waveform generator, waveform generator basis trigger signal generates multiple superfrequency signal, and will superfrequency signal passes through high frequency signal cable and transmits to equipment to be tested, and equipment to be tested carries out the ability evaluation according to received superfrequency signal, obtains the evaluation result to the problem that can't distinguish superfrequency sensor and host computer and carry out independent evaluation is solved.
Description
Technical Field
The application relates to the technical field of ultrahigh frequency partial discharge monitoring, in particular to a device and a method for quickly evaluating a host of ultrahigh frequency partial discharge detection equipment.
Background
In recent years, electrical equipment represented by gas insulated metal enclosed switchgear (GIS), transformers, ac metal enclosed switchgear, control equipment, and the like have been highly damaged, and significant losses and risks are brought to the power industry. The main manifestation form of the insulation fault of the electrical equipment is partial discharge, and the current ultrahigh frequency partial discharge detection equipment is proved to be capable of effectively detecting the partial discharge phenomenon of the electrical equipment, so that various power grid enterprises and power generation enterprises begin to be equipped with ultrahigh frequency partial discharge detection equipment in large quantity in recent years and are applied to the field of electrical equipment partial discharge live detection and online monitoring.
However, manufacturers of ultrahigh frequency partial discharge detection equipment at home and abroad have a lot of manufacturers and great differences in product technical levels. Due to the lack of effective methods and standards for evaluating the ultrahigh frequency partial discharge detection equipment, how to select the ultrahigh frequency partial discharge detection equipment with high technical level and excellent performance becomes a difficult problem for various power grid enterprises and power generation enterprises. Various existing data and documents show that in the evaluation work of the ultrahigh frequency partial discharge detection equipment, a high-voltage test transformer is mostly used for pressurizing a partial discharge defect model, and the ultrahigh frequency partial discharge detection equipment and the pulse current partial discharge detection equipment are used for simultaneously detecting the partial discharge phenomenon generated by the partial discharge defect model. Because the detection result of the pulse current partial discharge detection equipment can be quantified and calibrated, the detection capability of the ultrahigh frequency partial discharge detection equipment can be evaluated by comparing the detection result of the ultrahigh frequency partial discharge detection equipment with the detection result of the pulse current partial discharge detection equipment. However, due to the addition of the high-voltage test transformer and the partial discharge defect model, the portability of the device is poor, and the rapid evaluation of the ultrahigh-frequency partial discharge detection device on site is not facilitated; and such evaluation is carried out aiming at the whole ultrahigh frequency partial discharge detection equipment, and the ultrahigh frequency sensor and the host cannot be separated for independent evaluation.
Disclosure of Invention
The application provides a device and a method for rapidly evaluating a host of ultrahigh frequency partial discharge detection equipment, which aim to solve the problem that an ultrahigh frequency sensor and the host cannot be separated for independent evaluation.
A quick evaluation device of a ultrahigh frequency partial discharge detection device host comprises: the device comprises a function signal generator, a signal cable, a waveform generator, a high-frequency signal cable and equipment to be tested;
the function signal generator is connected with the waveform generator through a signal cable, and the waveform generator is connected with the equipment to be tested through a high-frequency signal cable;
the function signal generator is used for generating a trigger signal;
the signal cable is used for transmitting the trigger signal;
the waveform generator is used for receiving the trigger signal and generating an ultrahigh frequency signal according to the trigger signal;
the high-frequency signal cable is used for transmitting the ultrahigh-frequency signal;
and the equipment to be tested is used for receiving the ultrahigh frequency signal and displaying a corresponding map according to the ultrahigh frequency signal.
Optionally, the uhf signal comprises: at least one of an ultrahigh frequency signal detection signal, a pattern recognition detection signal, and an anti-interference capability detection signal.
Optionally, the pulse repetition rate of the uhf signal detection signal is not consistent with the power frequency, and the uhf signal detection signal is a single frequency signal having a frequency within 300 MHz-3 GHz.
Optionally, the rise time of the pattern recognition detection signal is not more than 333ps, and the power frequency cycle is 900Or 2700。
Optionally, the rise time of the antijamming capability detection signal is not more than 333ps, and the power frequency cycle is 900Or 2700And superposing the antijamming capability detection signal with a Gaussian noise signal.
A quick evaluation method for a host of ultrahigh frequency partial discharge detection equipment comprises the following steps:
the function signal generator generates a trigger signal and transmits the trigger signal to the waveform generator through a signal cable;
the waveform generator generates various ultrahigh frequency signals according to the trigger signal and transmits the ultrahigh frequency signals to the equipment to be tested through a high frequency signal cable;
and the equipment to be tested carries out capability evaluation according to the received ultrahigh frequency signal to obtain an evaluation result.
Optionally, the step of generating the plurality of uhf signals includes:
the waveform generator adjusts the ultrahigh frequency signal to generate at least one of an ultrahigh frequency signal detection signal, a pattern recognition detection signal and an anti-interference capability detection signal.
Optionally, the step of generating the uhf signal detection signal is: making the pulse repetition rate of the ultrahigh frequency signal inconsistent with the power frequency, and adjusting the frequency of the ultrahigh frequency signal to be a single frequency signal with the frequency within 300 MHz-3 GHz.
Optionally, the step of generating the pattern recognition detection signal comprises:
adjusting the rise time of the ultrahigh frequency signal to make the rise time not more than 333ps, and adjusting the power frequency period of the high frequency signal to be 900Or 2700。
Optionally, the step of generating the interference rejection capability detection signal includes:
adjusting the rise time of the ultrahigh frequency signal to make the rise time not more than 333ps, and adjusting the power frequency period of the high frequency signal to be 900Or 2700；
And superposing the adjusted ultrahigh frequency signal and a Gaussian noise signal.
According to the technical scheme, the application provides a device and a method for rapidly evaluating a host of ultrahigh frequency partial discharge detection equipment, and the device and the method comprise the following steps: function signal generator, signal cable, waveform generator, high frequency signal cable and equipment to be tested, function signal generator passes through the signal cable and connects waveform generator, waveform generator passes through the high frequency signal cable and connects equipment to be tested, function signal generator produce trigger signal, and will trigger signal passes through signal cable and transmits to waveform generator, waveform generator basis trigger signal generates multiple superfrequency signal, and will superfrequency signal passes through high frequency signal cable and transmits to equipment to be tested, and equipment to be tested carries out the ability evaluation according to received superfrequency signal, obtains the evaluation result to the problem that can't distinguish superfrequency sensor and host computer and carry out independent evaluation is solved.
Drawings
In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a rapid evaluation device for a host of an ultrahigh frequency partial discharge detection apparatus;
FIG. 2 is a flow chart of a method for rapidly evaluating a host of an ultrahigh frequency partial discharge detection device;
wherein:
1-a function signal generator; 2-a signal cable; 3-a waveform generator; 4-high frequency signal cables; 5-the device under test.
Detailed Description
Reference will now be made in detail to embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following examples do not represent all embodiments consistent with the present application. But merely as exemplifications of systems and methods consistent with certain aspects of the application, as recited in the claims.
The following description of the present application will be made with reference to fig. 1 and 2.
In the technical solution provided in the present application, a fast evaluation device for a host of an ultrahigh frequency partial discharge detection device is provided, please refer to fig. 1, which can show that the device includes: the device comprises a function signal generator 1, a signal cable 2, a waveform generator 3, a high-frequency signal cable 4 and a device under test 5. The function signal generator 1 is connected with the waveform generator 3 through a signal cable 2, and the waveform generator 3 is connected with the equipment to be tested 5 through a high-frequency signal cable 4.
The function signal generator 1 is used for generating a trigger signal;
the signal cable 2 is used for transmitting the trigger signal;
the waveform generator 3 is used for receiving the trigger signal and generating an ultrahigh frequency signal according to the trigger signal;
the high-frequency signal cable 4 is used for transmitting the ultrahigh-frequency signal;
and the device to be tested 5 is used for receiving the ultrahigh frequency signal and displaying a corresponding map according to the ultrahigh frequency signal.
The function signal generator 1 generates a trigger signal 2 with adjustable characteristics, and triggers the arbitrary waveform generator 3 through a signal cable 3, so that the arbitrary waveform generator 3 generates an ultrahigh frequency signal with specific characteristics, and the ultrahigh frequency signal is directly input into a host of ultrahigh frequency partial discharge detection equipment through a high frequency signal cable 4.
A function signal generator is a signal generating device that generates certain periodic time function waveform (sine wave, square wave, triangular wave, sawtooth wave, pulse wave, etc.) signals with frequencies ranging from a few micro-hertz to tens of megahertz. Besides being used for communication, instrument and automatic control system test, the device is also widely used in other non-electrical measurement fields. The function signal generator is convenient to carry, and can be used for setting a waveform range to be detected, generating a trigger signal of a function to be detected and triggering the waveform generator to generate an ultrahigh frequency signal because the function signal generator can generate a specific periodic time function waveform.
The waveform generator is a data signal generator, and when debugging hardware, signals are often added to observe whether the circuit works normally. In the technical scheme provided by the application, an arbitrary waveform generator is adopted, the arbitrary waveform generator is an optimal instrument for a simulation experiment, the arbitrary waveform generator is one of signal sources, and the arbitrary waveform generator has all the characteristics of the signal sources. We have traditionally considered that the signal source provides primarily the known signals (various waveforms) needed by the circuit under test, and then other instrumentation is used to measure the parameter of interest. The signal source simulates various test signals according to the requirements of a user without measuring any parameter in the electronic experiment and test processing, and provides the test signals to the tested circuit so as to meet the test requirement.
Further, the uhf signal includes: at least one of an ultrahigh frequency signal detection signal, a pattern recognition detection signal and an anti-interference capability detection signal, wherein the pulse repetition rate of the ultrahigh frequency signal detection signal is inconsistent with the power frequency, the ultrahigh frequency signal detection signal is a single frequency signal with the frequency of 300 MHz-3 GHz, the rise time of the pattern recognition detection signal is not more than 333ps, and the power frequency period is 900Or 2700The rise time of the anti-interference capability detection signal is not more than 333ps, and the power frequency cycle is 900Or 2700And superposing the antijamming capability detection signal with a Gaussian noise signal.
And (4) evaluating the ultrahigh frequency signal detection capability of the ultrahigh frequency partial discharge detection equipment host. The method comprises the steps of using a function signal generator to generate square wave signals with frequencies inconsistent with power frequencies (such as 49Hz, 51Hz and the like), and triggering an arbitrary waveform generator to enable the arbitrary waveform generator to generate ultrahigh frequency signals with single frequencies within 300 MHz-3 GHz, wherein the pulse repetition rates of the ultrahigh frequency signals are inconsistent with the power frequencies (such as 49Hz, 51Hz and the like). The pulse repetition rate is different from the power frequency, so that the ultrahigh frequency signal is not easy to appear in a laboratory and a field environment and is not easy to be interfered by noise in the laboratory or the field environment, and the ultrahigh frequency signal has a special spectrogram shape and is very easy to observe. The ultrahigh frequency signal is input into the ultrahigh frequency partial discharge detection equipment host through a high frequency signal cable with a fixed length (namely, an ultrahigh frequency sensor of the ultrahigh frequency partial discharge detection equipment is bypassed), and the ultrahigh frequency signal is effectively detected by observing whether the ultrahigh frequency partial discharge detection equipment host can effectively detect the ultrahigh frequency signal or not and effectively displaying the special spectrogram shape of the ultrahigh frequency signal, so that the purpose of quickly evaluating the ultrahigh frequency detection capability of the ultrahigh frequency partial discharge detection equipment host is achieved.
And evaluating the pattern recognition capability of the ultrahigh frequency partial discharge detection equipment host. The method comprises the steps of triggering an arbitrary waveform generator by using a square wave signal with the amplitude of 1V, the frequency of 50Hz, the initial phase of 90 degrees or the amplitude of 1V, the frequency of 100Hz and the initial phase of 180 degrees of a power frequency cycle, so that the arbitrary waveform generator repeatedly sends out a steep-front pulse ultrahigh frequency signal at a pulse repetition rate of 50Hz or 100Hz, the rising time of the steep-front pulse ultrahigh frequency signal is not more than 333ps, and the signal is generated at 270 degrees or 90 degrees and 270 degrees of phases of the power frequency cycle to simulate a single metal tip discharge or a single floating potential body discharge waveform. The steep front pulse ultrahigh frequency signal is input into the ultrahigh frequency partial discharge detection equipment host through a high frequency signal cable with a fixed length (namely, an ultrahigh frequency sensor of the ultrahigh frequency partial discharge detection equipment is bypassed), and the purpose of quickly evaluating the mode identification capability of the ultrahigh frequency partial discharge detection equipment host is achieved by observing whether the ultrahigh frequency partial discharge detection equipment host can effectively identify the discharge type of the analog signal.
And evaluating the anti-interference capability of the ultrahigh frequency partial discharge detection equipment host. On the basis of two ultrahigh frequency signals used in the evaluation of the pattern recognition capability, Gaussian noise is superposed, the ultrahigh frequency signals superposed with the Gaussian noise are input into the ultrahigh frequency partial discharge detection equipment host through a high frequency signal cable with a fixed length (namely, an ultrahigh frequency sensor of the ultrahigh frequency partial discharge detection equipment is bypassed), and the purpose of quickly evaluating the anti-interference capability of the ultrahigh frequency partial discharge detection equipment host is achieved by observing whether the ultrahigh frequency partial discharge detection equipment host can effectively eliminate or recognize the noise.
On the other hand, the present application further provides a method for quickly evaluating a host of an ultrahigh frequency partial discharge detection device, please refer to fig. 2, which shows that the method includes the steps of:
s1: the function signal generator generates a trigger signal and transmits the trigger signal to the waveform generator through a signal cable;
s2, the waveform generator generates various ultrahigh frequency signals according to the trigger signal and transmits the ultrahigh frequency signals to the equipment to be tested through a high frequency signal cable;
s3: and the equipment to be tested carries out capability evaluation according to the received ultrahigh frequency signal to obtain an evaluation result.
Further, the step of generating the plurality of superfrequency signals is:
the waveform generator adjusts the ultrahigh frequency signal to generate at least one of an ultrahigh frequency signal detection signal, a pattern recognition detection signal and an anti-interference capability detection signal.
The step of generating the ultrahigh frequency signal detection signal comprises:
making the pulse repetition rate of the ultrahigh frequency signal inconsistent with the power frequency, and adjusting the frequency of the ultrahigh frequency signal to be a single frequency signal with the frequency within 300 MHz-3 GHz.
The step of generating the pattern recognition detection signal comprises:
adjusting the rise time of the ultrahigh frequency signal to make the rise time not more than 333ps, and adjusting the power frequency period of the high frequency signal to be 900Or 2700。
The steps of generating the antijamming capability detection signal are as follows:
adjusting the rise time of the ultrahigh frequency signal to make the rise time not more than 333ps, and adjusting the power frequency period of the high frequency signal to be 900Or 2700。
And superposing the adjusted ultrahigh frequency signal and a Gaussian noise signal.
In some embodiments, the ultrahigh frequency partial discharge detection device host is evaluated for ultrahigh frequency signal detection capability. The function signal generator is used for generating square signals with the frequency inconsistent with the power frequency, such as square signals of 49Hz and square signals of 51Hz, for example, the arbitrary waveform generator is triggered, so that the arbitrary waveform generator generates ultrahigh frequency signals with single frequency within 300 MHz-3 GHz, the pulse repetition rate of which is inconsistent with the power frequency (such as 49Hz, 51Hz and the like). The pulse repetition rate is different from the power frequency, so that the ultrahigh frequency signal is not easy to appear in a laboratory and a field environment, the effect of being not easy to be interfered by noise in the laboratory or the field environment is realized, and the ultrahigh frequency signal can have a special spectrogram shape and can be observed very easily. The ultrahigh frequency signal bypasses an ultrahigh frequency sensor of ultrahigh frequency partial discharge detection equipment, is input into a host machine of the ultrahigh frequency partial discharge detection equipment through a high frequency signal cable with a fixed length, and is observed whether the host machine of the ultrahigh frequency partial discharge detection equipment can effectively detect the ultrahigh frequency signal or not, and the special spectrogram shape of the ultrahigh frequency signal is effectively displayed. And if the fixed spectrogram is compared with the fixed spectrogram, the same frequency domain signal spectrogram is obtained, and the ultrahigh frequency signal detection capability of the ultrahigh frequency partial discharge detection equipment host to be detected is proved. Namely, if the correspondence between special spectrograms of signals under some non-power frequencies can be realized, the aim of quickly evaluating the ultrahigh frequency detection capability of the ultrahigh frequency partial discharge detection equipment host can be fulfilled.
And evaluating the pattern recognition capability of the ultrahigh frequency partial discharge detection equipment host. Triggering the arbitrary waveform generator by using a square wave signal with the amplitude of 1V, the frequency of 50Hz and the initial phase of 90 degrees, so that the arbitrary waveform generator repeatedly sends out a steep front pulse ultrahigh frequency signal at the pulse repetition rate of 50Hz, the rising time of the steep front pulse ultrahigh frequency signal is not more than 333ps, and the signal is generated at the phase of 270 degrees in the power frequency period to simulate single metal tip discharge; the method comprises the steps of triggering an arbitrary waveform generator by using a square wave signal with the amplitude of 1V, the frequency of 100Hz and the initial phase of 180 degrees of a power frequency period, so that the arbitrary waveform generator repeatedly sends out a steep front pulse ultrahigh frequency signal at the pulse repetition rate of 100Hz, the rising time of the steep front pulse ultrahigh frequency signal is not more than 333ps, and the steep front pulse ultrahigh frequency signal is generated by fixing the phase positions of 90 degrees and 270 degrees of the power frequency period to simulate a single suspended potential body discharge waveform. The steep front pulse ultrahigh frequency signal bypasses an ultrahigh frequency sensor of the ultrahigh frequency partial discharge detection equipment, is input into a host of the ultrahigh frequency partial discharge detection equipment through a high frequency signal cable with a fixed length, and judges whether the discharge type of the analog signal can be effectively identified or not by observing whether the host of the ultrahigh frequency partial discharge detection equipment can correspondingly generate a spectrogram or not, so that the aim of quickly evaluating the mode identification capability of the host of the ultrahigh frequency partial discharge detection equipment is fulfilled.
And evaluating the anti-interference capability of the ultrahigh frequency partial discharge detection equipment host. In order to detect the capability of resisting interference, Gaussian noise is superposed on two ultrahigh frequency signals used in the evaluation of pattern recognition capability, and a simulated single metal tip discharge waveform superposed with noise and a simulated single floating potential body discharge waveform superposed with noise are obtained. And the ultrahigh frequency signal superposed with Gaussian noise bypasses an ultrahigh frequency sensor of the ultrahigh frequency partial discharge detection equipment, is input into a host machine of the ultrahigh frequency partial discharge detection equipment through a high frequency signal cable with a fixed length, and by observing whether the host machine of the ultrahigh frequency partial discharge detection equipment correspondingly generates a spectrogram, namely whether the host machine of the ultrahigh frequency partial discharge detection equipment effectively eliminates the interference of the noise, the mode identification of the discharge type can still be accurately completed, so that the aim of quickly evaluating the anti-interference capability of the host machine of the ultrahigh frequency partial discharge detection equipment is fulfilled.
In the equivalent height test of the sensor and the sensitivity test of the detection system, the used ultrahigh frequency signals only emphasize the single waveform characteristic of amplitude, do not consider the waveform characteristics of the ultrahigh frequency signals such as pulse repetition rate and the like, and do not consider the real local discharge waveform characteristics on site, so that the sensitivity of the sensor and the detection system can be evaluated, and the detection capability, the mode recognition capability, the anti-interference capability, the real local discharge detection capability and the like of the ultrahigh frequency signals cannot be evaluated. And the sensor equivalent height test and the detection system sensitivity test both depend on the ultrahigh frequency sensor, and the ultrahigh frequency detection equipment host cannot be independently evaluated.
Based on the above situation, the application provides a device and a method for rapidly evaluating a host of ultrahigh frequency partial discharge detection equipment, which comprises the following steps: function signal generator, signal cable, waveform generator, high frequency signal cable and the equipment that awaits measuring, function signal generator passes through the signal cable and connects waveform generator, waveform generator passes through the high frequency signal cable and connects the equipment that awaits measuring, function signal generator produce trigger signal, and will trigger signal passes through signal cable and transmits to waveform generator, waveform generator basis trigger signal generates multiple superfrequency signal, and will superfrequency signal passes through the high frequency signal cable and transmits to the equipment that awaits measuring, and the equipment that awaits measuring carries out the ability evaluation according to received superfrequency signal, obtains the evaluation result, and this application can be used for laboratory or scene to carry out quick, comprehensive, safe evaluation to superfrequency partial discharge test equipment host computer.
The ultrahigh frequency partial discharge detection device and the method have the advantages that the problem that the ultrahigh frequency sensor and the host cannot be separated to be independently evaluated at the present stage is solved, the function signal generator is adopted to generate the trigger signal with adjustable characteristics, and the signal cable is used for triggering any waveform generator, so that any waveform generator generates the ultrahigh frequency signal with specific characteristics, and the ultrahigh frequency signal is directly input into the host of the ultrahigh frequency partial discharge detection device through the high frequency signal cable. The invention also considers the waveform characteristics of the pulse repetition rate and the like of the ultrahigh frequency signal and the on-site real partial discharge waveform characteristics, and has the capability of quickly and accurately evaluating the detection capability, the pattern recognition capability, the anti-interference capability, the real partial discharge detection capability and the like of the ultrahigh frequency signal.
The embodiments provided in the present application are only a few examples of the general concept of the present application, and do not limit the scope of the present application. Any other embodiments extended according to the scheme of the present application without inventive efforts will be within the scope of protection of the present application for a person skilled in the art.
Claims (10)
1. The utility model provides a quick evaluation device of superfrequency partial discharge test equipment host computer which characterized in that includes: the device comprises a function signal generator (1), a signal cable (2), a waveform generator (3), a high-frequency signal cable (4) and a device to be tested (5);
the function signal generator (1) is connected with the waveform generator (3) through a signal cable (2), and the waveform generator (3) is connected with the equipment to be tested (5) through a high-frequency signal cable (4);
the function signal generator (1) is used for generating a trigger signal;
the signal cable (2) is used for transmitting the trigger signal;
the waveform generator (3) is used for receiving the trigger signal and generating an ultrahigh frequency signal according to the trigger signal;
the high-frequency signal cable (4) is used for transmitting the ultrahigh-frequency signal;
and the equipment to be tested (5) is used for receiving the ultrahigh frequency signal and displaying a corresponding map according to the ultrahigh frequency signal.
2. The apparatus according to claim 1, wherein the uhf signal comprises: at least one of an ultrahigh frequency signal detection signal, a pattern recognition detection signal, and an anti-interference capability detection signal.
3. The device for rapidly evaluating the ultrahigh frequency partial discharge detection equipment host according to claim 2, comprising:
the pulse repetition rate of the ultrahigh frequency signal detection signal is inconsistent with the power frequency, and the ultrahigh frequency signal detection signal is a single frequency signal with the frequency within 300 MHz-3 GHz.
4. The device for rapidly evaluating the ultrahigh frequency partial discharge detection equipment host according to claim 2, comprising:
the rise time of the pattern recognition detection signal is not more than 333ps, and the power frequency cycle is 900Or 2700。
5. The device for rapidly evaluating the ultrahigh frequency partial discharge detection equipment host according to claim 2, comprising:
the rise time of the anti-interference capability detection signal is not more than 333ps, and the power frequency cycle is 900Or 2700And superposing the antijamming capability detection signal with a Gaussian noise signal.
6. A quick evaluation method for a host of ultrahigh frequency partial discharge detection equipment is characterized by comprising the following steps:
the function signal generator generates a trigger signal and transmits the trigger signal to the waveform generator through a signal cable;
the waveform generator generates various ultrahigh frequency signals according to the trigger signal and transmits the ultrahigh frequency signals to the equipment to be tested through a high frequency signal cable;
and the equipment to be tested carries out capability evaluation according to the received ultrahigh frequency signal to obtain an evaluation result.
7. The method for rapidly evaluating a UHF partial discharge detection device host according to claim 6, wherein the step of generating a plurality of UHF signals comprises:
the waveform generator adjusts the ultrahigh frequency signal to generate at least one of an ultrahigh frequency signal detection signal, a pattern recognition detection signal and an anti-interference capability detection signal.
8. The method according to claim 7, wherein the step of generating the uhf signal detection signal is:
making the pulse repetition rate of the ultrahigh frequency signal inconsistent with the power frequency, and adjusting the frequency of the ultrahigh frequency signal to be a single frequency signal with the frequency within 300 MHz-3 GHz.
9. The method for rapidly evaluating a host computer of an ultrahigh frequency partial discharge detection device according to claim 7, wherein the step of generating a pattern recognition detection signal comprises:
adjusting the rise time of the ultrahigh frequency signal to make the rise time not more than 333ps, and adjusting the power frequency period of the high frequency signal to be 900Or 2700。
10. The method for rapidly evaluating an ultrahigh frequency partial discharge detection device host according to claim 7, wherein the step of generating the detection signal of the anti-interference capability comprises the following steps:
adjusting the rise time of the ultrahigh frequency signal to make the rise time not more than 333ps, and adjusting the power frequency period of the high frequency signal to be 900Or 2700；
And superposing the adjusted ultrahigh frequency signal and a Gaussian noise signal.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102645619A (en) * | 2012-04-25 | 2012-08-22 | 云南电力试验研究院（集团）有限公司电力研究院 | Evaluating method of electric equipment partial discharge detection system and electric equipment partial discharge detection device |
| CN103472424A (en) * | 2013-08-26 | 2013-12-25 | 云南电力试验研究院（集团）有限公司电力研究院 | Method for testing performance of different types of partial discharge detector mainframes based on analog voltage signal injection |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102645619A (en) * | 2012-04-25 | 2012-08-22 | 云南电力试验研究院（集团）有限公司电力研究院 | Evaluating method of electric equipment partial discharge detection system and electric equipment partial discharge detection device |
| CN103472424A (en) * | 2013-08-26 | 2013-12-25 | 云南电力试验研究院（集团）有限公司电力研究院 | Method for testing performance of different types of partial discharge detector mainframes based on analog voltage signal injection |
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Application publication date: 20210622 |
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