CN111722169A - Anti-jamming performance detection device and method of high-frequency partial discharge detector - Google Patents

Abstract

The present application relates to a device and method for detecting the anti-interference performance of a high-frequency partial discharge detector. The anti-interference performance detection device of the high-frequency partial discharge detector includes a partial discharge signal generation module, a first signal acquisition module, an interference signal generation module, a second signal acquisition module and a signal processing module. The partial discharge signal generation module is used for generating partial discharge signals; the first signal acquisition module is connected to the partial discharge signal generation module for signal acquisition, and is used for collecting the partial discharge signals; the interference signal generation module is used for for generating interference signals of different amplitudes; the second signal acquisition module is signal-connected to the interference signal generation module for collecting the interference signals. The signal processing module is in signal connection with the first signal acquisition module and the second signal acquisition module. The anti-jamming performance detection device of the high-frequency partial discharge detector provided by the embodiment of the present application can realize the detection of the anti-jamming performance of the high-frequency partial discharge detector.

Description

Anti-jamming performance detection device and method of high-frequency partial discharge detector

technical field

The present application relates to the technical field of power systems, and in particular, to a device and method for detecting the anti-interference performance of a high-frequency partial discharge detector.

Background technique

Live high-frequency partial discharge detection is the most effective means to detect the state of high-voltage cable lines. High-frequency partial discharge is usually detected by a high-frequency partial discharge detector. The performance detection of high frequency partial discharge detector is very important for the accuracy of high frequency partial discharge detection.

In the traditional technology, the detection of the performance of the high-frequency partial discharge detector is mainly to detect the sensitivity of the high-frequency partial discharge detector under laboratory conditions. However, the detection of sensitivity can only reflect the PD detection ability of the high-frequency partial discharge detector in the case of no interference signal, and cannot detect the partial discharge detection ability of the high-frequency partial discharge detector in the case of the interference signal, that is, the high frequency Anti-jamming performance of partial discharge detector. The anti-jamming performance of the high-frequency partial discharge detector is an important performance that affects its detection accuracy. Therefore, a device capable of detecting the anti-jamming performance of the high-frequency partial discharge detector is required.

SUMMARY OF THE INVENTION

Based on this, it is necessary to provide a device and method for detecting the anti-interference performance of a high-frequency partial discharge detector in response to the above technical problems.

On the one hand, an embodiment of the present application provides a device for detecting the anti-interference performance of a high-frequency partial discharge detector, including:

PD signal generation module, used to generate PD signal;

a first signal acquisition module, which is signal-connected to the PD signal generation module and used for acquiring the PD signal;

The interference signal generation module is used to generate interference signals of different amplitudes;

a second signal acquisition module, which is signal-connected to the interference signal generation module for collecting the interference signal;

The signal processing module is connected to the first signal acquisition module and the second signal acquisition module, and the signal processing module is used for detecting the high frequency partial discharge detector to be detected at the different amplitudes. Under the interference of the interference signal, the detection result of the partial discharge signal determines the maximum interference signal that the high-frequency partial discharge detector to be detected can resist, and determines the maximum interference signal according to the maximum interference signal and the partial discharge signal. The anti-interference performance of the high-frequency partial discharge detector to be detected is described.

In one embodiment, the PD signal generating module includes:

Plate electrodes for generating electric fields;

The partial discharge signal generating component is signally connected to the first signal acquisition module, and the partial discharge signal generating component is arranged in the electric field and used for generating the partial discharge signal based on the electric field.

In one embodiment, the PD signal generating module further includes:

The insulating oil cup is provided with an accommodating cavity, the flat electrode and the partial discharge signal generating assembly are arranged in the accommodating cavity, and the insulating oil cup is used for isolating air.

In one embodiment, the interference signal generating module includes:

Cable termination assemblies for generating the initial interfering signal;

The signal amplifying component is electrically connected to the cable terminal component, and is used for amplifying the initial interference signal by different multiples to obtain the interference signal with different amplitudes.

In one embodiment, it also includes:

The third signal acquisition module is connected with both the PD signal generation module and the interference signal generation module, and is used for collecting the mixed signal formed by the PD signal and the interference signal. A high-frequency partial discharge detector is used to detect the partial discharge signal in the mixed signal.

In one embodiment, the signal processing module is specifically configured to determine the resistance of the high-frequency partial discharge detector to be detected according to the maximum amplitude of the maximum interference signal and the maximum amplitude of the partial discharge signal. Interference degree to determine the anti-interference performance of the high-frequency partial discharge detector to be detected.

In one embodiment, it also includes:

a power module, electrically connected to the PD signal generating module and the signal processing module;

a transformer, electrically connected between the power supply module and the PD signal generating module, and electrically connected between the power supply module and the signal processing module, the transformer is used for regulating the power supply The voltage of the power supply provided by the module to the PD signal generating module and the signal processing module.

In one embodiment, the first signal acquisition module and the second signal acquisition module are high-frequency current transformers.

On the other hand, the embodiment of the present application also provides a method for detecting the anti-jamming performance of the high-frequency partial discharge detector to be detected by applying the anti-jamming performance detection device of the high-frequency partial discharge detector as described above, including:

Generate a partial discharge signal through the partial discharge signal generating module, and acquire the partial discharge signal through the first signal acquisition module;

Generate interference signals of different amplitudes through the interference signal generating module;

Detecting the partial discharge signal under the interference of the interference signals of different amplitudes by the high-frequency partial discharge detector to be detected, to obtain a detection result;

The signal processing module determines the maximum interference signal that the high-frequency partial discharge detector to be detected can resist according to the detection result, and obtains the maximum interference signal through the second signal acquisition module, At the same time, the signal processing module determines the anti-interference performance of the high-frequency partial discharge detector to be detected according to the partial discharge signal and the maximum interference signal.

In one embodiment, the signal processing module determines the anti-interference performance of the high-frequency partial discharge detector to be detected according to the partial discharge signal and the maximum interference signal, including:

Determine the anti-interference degree of the high-frequency partial discharge detector to be detected according to the ratio of the maximum amplitude of the maximum interference signal and the maximum amplitude of the partial discharge signal;

The anti-interference performance of the high-frequency partial discharge detector to be detected is determined according to the anti-interference degree.

The anti-interference performance detection device and method of a high-frequency partial discharge detector provided by the embodiment of the present application includes a partial discharge signal generation module, a first signal acquisition module, an interference signal generation module, and a second signal generation module group and signal processing device. The interference signal generating module can generate interference signals of different amplitudes, so that the high-frequency partial discharge detector to be detected detects the partial discharge signals under the interference of the interference signals of different amplitudes. The signal processing module determines the maximum interference signal that can be resisted by the high-frequency partial discharge detector to be detected according to the detection result of the partial discharge signal by the high-frequency partial discharge detector to be detected, and determines the maximum interference signal that the high-frequency partial discharge detector to be detected can resist. The maximum interference signal is calculated and processed to determine the anti-interference performance of the PD detector to be detected, thereby solving the problem that the current method or device for detecting the anti-interference performance of the PD detector to be detected is lacking.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or in the traditional technology, the following briefly introduces the accompanying drawings that are used in the description of the embodiments or the traditional technology. Obviously, the drawings in the following description are only the For some embodiments of the application, for those skilled in the art, other drawings can also be obtained according to these drawings without any creative effort.

1 is a schematic structural diagram of an anti-interference performance detection device of a high-frequency partial discharge detector provided by an embodiment of the present application;

2 is a schematic structural diagram of a PD signal generation module provided by an embodiment of the present application;

3 is a schematic structural diagram of an interference signal generating module provided by an embodiment of the present application;

4 is a schematic structural diagram of an anti-interference performance detection device of a high-frequency partial discharge detector provided by an embodiment of the present application;

5 is a schematic flowchart of steps of a method for detecting anti-interference performance of a high-frequency partial discharge detector provided by an embodiment of the present application;

FIG. 6 is a schematic flowchart of steps of a method for detecting anti-interference performance of a high-frequency partial discharge detector provided by an embodiment of the present application.

Description of reference numerals

10. High-frequency partial discharge detector to be detected;

20. Anti-jamming performance detection device of high-frequency partial discharge detector;

100. Partial discharge signal generation module;

110. Plate electrode;

120. Partial discharge signal generating component;

130. Insulating oil cup;

200. A first signal acquisition module;

300. Interference signal generation module;

310. Cable terminal assembly;

311. High-voltage single-core cable;

312. Cable terminal metal tail pipe;

313, wiring board;

314. Metal base of cable terminal;

315. Cable terminal sleeve;

315. Cable terminal wiring rod;

317. Overhead wire;

320. Signal amplification components;

400. A second signal acquisition module;

500. Signal processing module;

600. A third signal acquisition module;

700, power module;

800. Transformer.

Detailed ways

In order to make the above objects, features and advantages of the present application more clearly understood, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

The serial numbers themselves, such as "first", "second", etc., for the components herein are only used to distinguish the described objects, and do not have any order or technical meaning. The "connection" and "connection" mentioned in this application, unless otherwise specified, include both direct and indirect connections (connections). In the description of this application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", The orientation or positional relationship indicated by "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description , rather than indicating or implying that the referred device or element must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as a limitation on the present application.

In this application, unless otherwise expressly stated and defined, a first feature "on" or "under" a second feature may be in direct contact with the first and second features, or the first and second features indirectly through an intermediary touch. Also, the first feature being "above", "over" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

The technical solutions of the present application and how the technical solutions of the present application solve the above-mentioned technical problems will be described in detail below with specific embodiments. The following specific embodiments may be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below with reference to the accompanying drawings.

The present application provides an anti-jamming performance detection device of a high-frequency partial discharge detector, which can be used to detect the anti-jamming performance of a high-frequency partial discharge detector to be detected. The high-frequency partial discharge detector to be detected is a device used to detect partial discharge signals. The anti-interference performance of the high-frequency partial discharge detector to be detected refers to the resistance of the high-frequency partial discharge detector to be detected to the interference signal during detection, that is, the high-frequency partial discharge detector to be detected can detect the interference of the interference signal. PD signal capability.

Referring to FIG. 1 , an embodiment of the present application provides an anti-interference performance detection device 20 of a high-frequency partial discharge detector, including a partial discharge signal generation module 100 , a first signal acquisition module 200 , and an interference signal generation module 300 , a second signal acquisition module 400 and a signal processing module 500 .

The PD signal generating module 100 is used for generating PD signals. The partial discharge signal is the partial discharge signal. Partial discharge refers to the discharge that occurs in the local area of the insulation of power equipment under the action of a strong enough electric field. This discharge is limited to only causing a partial short circuit of the insulation between the conductors without forming a conduction. The PD signal generating module 100 can generate the PD signal to simulate the environment in which the PD signal is generated in an actual application scenario. The PD signal generating module 100 can generate PD signals of different sizes according to actual needs. The PD signal generation module 100 may be a PD signal generator, a PD signal simulation device, etc. This embodiment does not limit the specific type and structure of the PD signal generation module 100, as long as It suffices to be able to generate the partial discharge signal.

The first signal acquisition module 200 is signal-connected to the PD signal generation module 100 for acquiring the PD signal. The first signal acquisition module 200 can characterize the partial discharge signal by collecting the current signal or voltage signal generated by the partial discharge, so the first signal acquisition module 200 can be a device capable of collecting current signals, or can It is a device that can collect voltage signals. If the first signal collection module 200 represents the PD signal by collecting the voltage signal generated by the partial discharge, the first signal collection module 200 may be a voltage transformer or a voltage sensor. This embodiment does not impose any restrictions on the type of the first signal acquisition module 200, and does not impose any restrictions on the installation position of the first signal acquisition module 200, as long as the PD signal can be acquired.

The interference signal generating module 300 is used for generating interference signals with different amplitudes. In an actual scene, the high-frequency partial discharge detector 10 to be detected will be interfered by other signals when detecting the partial discharge signal. The use of the interference signal generating module 300 can simulate the actual scene to generate interference of different amplitudes. Signal. The interference signal generating module 300 may randomly generate interference signals with different amplitudes, or may generate interference signals with different amplitudes according to certain rules. For example, the interference signal generating module 300 can generate interference signals of different amplitudes in a certain amplitude interval in an order from small to large, or can generate different amplitudes in a certain amplitude interval in an order from large to small. Amplitude of the interfering signal.

The second signal acquisition module 400 is signal-connected to the interference signal generation module 300 for acquiring the interference signal. The second signal collection module 400 can characterize the interference signal by collecting the current signal or the voltage signal generated by the interference signal generation module 300 . Therefore, the second signal collection module 400 may be a device capable of collecting current signals, or may be a device capable of collecting voltage signals. If the second signal collection module 400 represents the interference signal by collecting the voltage signal generated by the interference signal generation module 300, the second signal collection module 400 may be a voltage transformer or a voltage sensor. If the first signal acquisition module 200 represents the PD signal by acquiring the voltage signal generated by the partial discharge, the second signal acquisition module 400 also needs to generate the signal by acquiring the interference signal generation module 300 the voltage signal to characterize the interference signal. This embodiment does not impose any restrictions on the type of the second signal acquisition module 400, and does not impose any restrictions on the installation position of the second signal acquisition module 400, as long as the interference signal can be acquired.

The signal processing module 500 is in signal connection with the first signal acquisition module 200 and the second signal acquisition module 400 . The signal processing module 500 has 3 input terminals, the first input terminal is connected with the signal of the first signal acquisition module 200 for inputting the partial discharge signal; the second input terminal is connected to the second signal acquisition module The module 400 is signal-connected for inputting the maximum interference signal; the third input terminal is signal-connected to the high-frequency partial discharge detector 10 to be detected, and is used to input the detection of the high-frequency partial discharge detector 10 to be detected result. The high-frequency partial discharge detector 10 to be detected detects the partial discharge signal under the interference of the interference signals of different amplitudes, and obtains the detection result. The signal processing module 500 determines the maximum interference signal that the high-frequency partial discharge detector 10 to be detected can resist according to the received detection results, and determines the maximum interference signal according to the maximum interference signal and the partial discharge signal. The anti-interference performance of the high-frequency partial discharge detector 10 to be detected. The signal processing module 500 can be, but is not limited to, a control chip, a personal computer, a notebook computer, a smart phone, a tablet computer, and a portable wearable device.

The working principle of the anti-interference performance detection device 20 of the high-frequency partial discharge detector is as follows:

The partial discharge signal is generated by the partial discharge signal generating module 100, and the partial discharge signal is collected by the first signal acquisition module 200, and the partial discharge signal is fixed. The interference signal generating module 300 is used to generate interference signals of different amplitudes, and the high-frequency partial discharge detector 10 to be detected detects the partial discharge signals under the interference of the interference signals of different amplitudes. The signal processing module 500 is used to record each detection result, analyze the detection result, and determine the maximum interference signal that the high-frequency partial discharge detector 10 to be detected can resist, that is, to determine the to-be-detected high-frequency partial discharge detector 10 Detect the interference signal at the critical point when the high-frequency partial discharge detector 10 can detect the partial discharge signal and cannot detect the partial discharge signal, and the interference signal at this time is the maximum interference signal. The maximum interference signal is collected by the second signal collection module 400 . The signal processing module 500 determines the anti-interference performance of the high-frequency partial discharge detector 10 to be detected according to the partial discharge signal and the maximum interference signal.

The device and method for detecting the anti-jamming performance of a high-frequency partial discharge detector provided in this embodiment include a partial discharge signal generation module 100, a first signal acquisition module 200, an interference signal generation module 300, and a second signal generation module 300. The generation module 400 and the signal processing module 500 are generated. The interference signal generating module 300 can generate interference signals of different amplitudes, so that the high-frequency partial discharge detector to be detected detects the partial discharge signals under the interference of the interference signals of different amplitudes. The signal processing module 500 determines the maximum interference signal that can be resisted by the high-frequency partial discharge detector 10 to be detected according to the detection result of the partial discharge signal by the high-frequency partial discharge detector 10 to be detected, and according to the partial discharge signal Calculate and process the maximum interference signal to determine the anti-interference performance of the PD detector to be detected, thereby solving the current method or device for detecting the anti-interference performance of the PD detector 10 to be detected. At the same time, it can promote manufacturers to optimize the product quality of PD high-frequency detectors, and can guide staff to choose suitable PD detectors in different application scenarios.

Referring to FIG. 2 , in one embodiment, the PD signal generating module 100 includes a flat electrode 110 and a PD signal generating component 120 .

The plate electrode 110 is used to generate an electric field. The flat electrode 110 may be composed of two rectangular plates, which are placed in parallel and facing each other. The electric field can be generated by supplying power to the two plates, and the electric field between the two plates can be regarded as a uniform electric field.

The PD signal generating component 120 is signally connected to the first signal collecting module 200, and the first signal collecting module 200 is used for collecting the PD signal generating component 120 to generate the PD signal. The PD signal generating component 120 is disposed in the electric field, and is used for generating the PD signal based on the electric field. The partial discharge signal generating component 120 may be a test piece with an air gap defect, and the test piece can generate a partial discharge signal under a certain electric field strength. In the actual scene, there is partial discharge inside the cable insulation. In this embodiment, a test piece with air gap defect is used to replace the cable. If the voltages of the power supplies provided to the two electrode plates are different, the electric field strengths generated by the two electrode plates are different, and the PD signals generated by the PD signal generating component 120 are also different. The PD signal generating component 120 may be disposed between two pole plates. Since the electric field between the two pole plates is a uniform electric field, the PD signal generated by the PD signal generating component 120 will be more stable.

In this embodiment, the PD signal generating module 100 composed of the flat electrode 110 and the PD signal generating component 120 has a simple structure and is easy to implement. And by supplying power sources with different voltages to the flat electrode 110, the PD signal generating component 120 can generate different PD signals, which improves the practicability of the PD signal generating module 100, thereby improving the overall performance of the PD signal generating module 100. The practicability of the anti-jamming signal detection device 20 of the high-frequency partial discharge detector is described.

Please continue to refer to FIG. 2 , in one embodiment, the PD signal generating module 100 further includes an insulating oil cup 130 . The insulating oil cup 130 is provided with an accommodating cavity, and the flat electrode 110 and the partial discharge signal generating assembly 120 are arranged in the accommodating cavity, and the insulating oil cup 130 is used for isolating air. The insulating oil cup 130 is provided with insulating oil, and the flat electrode 110 and the partial discharge signal generating assembly 120 are both immersed in the insulating oil. Due to the low insulation level of air, when the PD signal generating component 120 generates the PD signal, there will be creeping discharge interference affecting it, so the flat electrode 110 and the PD signal are generated. The arrangement of the component 120 in the insulating oil cup 130 can eliminate creeping discharge interference, and can improve the accuracy and reliability of the partial discharge signal generated by the partial discharge signal generating component 120 .

Referring to FIG. 3 , in one embodiment, the interference signal generating module 300 includes a cable termination assembly 310 and a signal amplification assembly 320 .

The cable termination assembly 310 is used to generate the initial interference signal. The cable termination assembly 310 may be a power grid device that may generate the initial disturbance signal when operating under power. The voltage level of the power grid equipment is above 110KV. The higher the voltage level and the longer the overhead line, the more conducive to generating the initial interference signal. Specifically, the cable termination assembly 310 may be a high-voltage outdoor substation, an electrified rail user substation, or the like.

In a specific embodiment, as shown in FIG. 3 , the cable termination assembly 310 may include a high-voltage single-core cable 311 , a cable termination metal tail pipe 312 , a wiring board 313 , a cable termination metal base 314 , and a cable termination sleeve 315 , cable terminal bar 316 and overhead conductor 317 . The high-voltage single-core cable 311 is sleeved with the cable terminal metal tail pipe 312; one end of the wiring board 313 is electrically connected with the cable terminal metal tail pipe 312; the cable terminal metal base 314 is arranged on the cable terminal metal tail pipe 312 and the cable terminal sleeve. 315; the cable terminal connecting rod 316 is electrically connected with the cable terminal sleeve 315; the cable terminal sleeve 315 is electrically connected with the overhead conductor 317. The other end of the wiring board 313 is connected to the signal amplifying component 320 . The metal tail pipe 312 of the cable terminal and the signal amplification assembly 320 are grounded.

The signal amplifying component 320 is electrically connected to the cable termination component 310, and is used for amplifying the initial interference signal by different multiples to obtain the interference signal with different amplitudes. The signal amplifying component 320 is a signal amplifier whose amplification factor can be adjusted. The signal amplifier can amplify the initial interference signal generated during the operation of the cable termination assembly 310, and the amplitude of the generated interference signal is different with different amplification factors.

In this embodiment, the initial interference signal generated by the cable terminal assembly 310 is closer to the interference signal in the actual application scenario, so that the anti-interference performance detection device 20 of the high-frequency partial discharge detector is more sensitive to the to-be-to-be-discharged performance detection device 20. The detection of the anti-interference performance of the high-frequency partial discharge detector 10 is more accurate. And by amplifying the initial interference signal by the signal amplifying component 320, interference signals with different amplitudes can be obtained, which can improve the practicability of the interference signal generating module 300, thereby improving the high-frequency partial discharge detector. The practicability of the anti-interference performance detection device 20.

Referring to FIG. 4 , in one embodiment, the anti-interference performance detection device 20 of the high-frequency partial discharge detector further includes a third signal acquisition module 600 . The third signal collection module 600 is connected to both the PD signal generation module 100 and the interference signal generation module 300 in signal connection, and is used for collecting the mixed signal formed by the PD signal and the interference signal. The to-be-detected high-frequency partial discharge detector 10 is signal-connected to the third signal acquisition module 600 for detecting the partial discharge signal in the mixed signal. The mixed signal may be represented by a current signal or a voltage signal, and the third signal acquisition module 600 may be a device capable of acquiring a current signal or a device capable of acquiring a voltage signal. For the specific description of the third signal collection module 600, reference may be made to the above description of the first signal collection module 200 and the second signal collection module 400, and details are not repeated here.

In one embodiment, the signal processing module 500 is specifically configured to determine the maximum amplitude of the high-frequency partial discharge detector 10 to be detected according to the maximum amplitude of the maximum interference signal and the maximum amplitude of the partial discharge signal. The anti-interference degree is used to determine the anti-interference performance of the high-frequency partial discharge detector 10 to be detected. The signal processing module 500 may represent the maximum interference signal and the partial discharge signal by waveform diagrams respectively. The maximum amplitude in the waveform diagram of the maximum interference signal and the maximum amplitude in the waveform diagram of the partial discharge signal can be obtained by analyzing the waveform diagram. The signal processing module 500 can obtain the anti-interference degree of the high-frequency partial discharge detector 10 to be detected by calculating the ratio of the maximum amplitude of the maximum interference signal to the maximum amplitude of the partial discharge signal. The anti-interference performance of the high-frequency partial discharge detector 10 to be detected can be determined by the anti-interference degree. The greater the anti-interference degree, the stronger the resistance of the high-frequency partial discharge detector 10 to be detected to the interference signal during detection, that is, the better the anti-interference performance of the high-frequency partial discharge detector 10 to be detected. .

Please continue to refer to FIG. 4 , in one embodiment, the anti-interference performance detection device 20 of the high-frequency partial discharge detector further includes a power module 700 and a transformer 800 .

The power module 700 is electrically connected to the PD signal generating module 100 and the signal processing module 500 . The power module 700 may be commercial power or an energy storage battery. The transformer 800 is electrically connected between the power module 700 and the PD signal generating module 100, and is also electrically connected between the power module 700 and the signal processing module 500. The transformer 800 is used to adjust the voltage of the power supply provided by the power module 700 to the PD signal generating module 100 and the signal processing module 500 . The transformer 800 is a device that uses the principle of electromagnetic induction to change the AC voltage, and is mainly composed of a primary coil, a secondary coil and an iron core. Specifically, the transformer 800 includes a transformer V1, a transformer V2 and a transformer V3. The transformer V1 may be an adjustable transformer, and the transformers V2 and V3 may be fixed transformers. The voltage of the output terminals of the transformer V2 and the transformer V3 can be changed by adjusting the transformer V1 to achieve the voltage required by the PD signal generating module 100 and the signal processing module 500 . In a specific embodiment, if the mains voltage is 220V, by adjusting the transformer V1, the voltage of the signal processing module 500 can be 10V, and the voltage of the partial discharge signal generating module 100 can be 10KV. In this embodiment, the power supply module 700 and the transformer 800 can conveniently provide the required voltage for the PD signal generating module 100 and the signal processing module 500, thereby improving the high frequency Practicality of the anti-jamming performance detection device 20 of the partial discharge detector.

In one embodiment, the first signal acquisition module 200 and the second signal acquisition module 400 are high-frequency current transformers. The first signal acquisition module 200 can characterize the partial discharge signal by collecting the current signal generated by the partial discharge, and the second signal acquisition module 400 can generate the current signal by collecting the interference signal generation module 300. To characterize the interference signal, the PD signal and the interference signal can be collected by using the high-frequency current transformer. The principle of the high-frequency current transformer is based on the principle of electromagnetic induction, and is usually composed of a closed iron core and windings. The impedance of the high-frequency current transformer is very small, the partial discharge signal and the interference signal collected by the high-frequency current transformer are more accurate, and the anti-interference performance detection of the high-frequency partial discharge detector is improved. The accuracy of the anti-interference performance of the device 20 to the high-frequency partial discharge detector 10 to be detected.

Referring to FIG. 5, an embodiment of the present application further provides an anti-jamming performance detection device using the high-frequency partial discharge detector described in any of the above embodiments to detect the anti-jamming performance of the high-frequency partial discharge detector to be detected. methods, including:

S100 , generating a partial discharge signal through the partial discharge signal generating module 100 , and acquiring the partial discharge signal through the first signal collecting module 200 .

S200 , generating interference signals with different amplitudes through the interference signal generating module 300 .

Different PD signals can be generated by the PD signal generating module 100. When detecting the high-frequency PD detector to be detected, the PD signal generating module 100 generates one PD signal, The PD signal does not change during the detection process. When the current detection ends and the next detection starts, the PD signal generating module 100 may generate a different PD signal from the last time. When detecting the high-frequency partial discharge detector to be detected, the anti-interference performance of the high-frequency partial discharge detector 10 to be detected can be improved by changing the difference of the interference signals generated by the interference signal generating module 300. detection. To put it simply, the PD signal generated by the PD signal generation module 100 during the detection process is fixed, and the interference signal generated by the interference signal generation module 300 during the detection process is changing. For the specific description of the PD signal generation module 100 and the PD signal, as well as the specific description of the interference signal generation module 300 and interference signals of different amplitudes, please refer to the above-mentioned high-frequency PD detector The description in the anti-interference performance detection device 10 will not be repeated here.

S300, the PD signal under the interference of the interference signal of different amplitude is detected by the high-frequency PD detector 10 to be detected, and a detection result is obtained.

S400 , the signal processing module 500 determines the maximum interference signal that the high-frequency partial discharge detector 10 to be detected can resist according to the detection result, and obtains the maximum interference signal through the second signal acquisition module 400 the maximum interference signal.

S500, the signal processing module 500 determines the anti-interference performance of the high-frequency partial discharge detector 10 to be detected according to the partial discharge signal and the maximum interference signal.

Under the interference of the interference signals of different amplitudes, the high-frequency partial discharge detector 10 to be detected detects the partial discharge signal. The signal processing module 500 is used to record each detection result, analyze the detection result, and determine the maximum interference signal that the high-frequency partial discharge detector 10 to be detected can resist, that is, to determine the to-be-detected high-frequency partial discharge detector 10 Detect the interference signal at the critical point when the high-frequency partial discharge detector 10 can detect the partial discharge signal and cannot detect the partial discharge signal, and at this time, the interference signal is the maximum interference signal. The signal processing module 500 determines the anti-interference performance of the high-frequency partial discharge detector 10 to be detected by calculating and processing the PD signal and the maximum interference signal, and using a calculation structure.

The detection method of the high-frequency partial discharge detector 10 to be detected is to use the high-frequency partial discharge detector anti-interference performance detection device 20 for detection, and the specific beneficial effects of the method can refer to the above-mentioned high-frequency partial discharge detector. The description of the device 10 for detecting the anti-interference performance of a frequency partial discharge detector will not be repeated here.

In a specific embodiment, the interference signal generating module 300 can first generate an interference signal with a minimum amplitude, and judge whether the high-frequency partial discharge detector 10 to be detected can detect the partial discharge signal. The high-frequency partial discharge detector to be detected can also detect the partial discharge signal, then the interference signal generation module 300 increases the amplitude of the generated interference signal according to a certain rule, until the high-frequency partial discharge detector to be detected 10 Until the PD signal is not detected, the interference signal at this time is taken as the maximum interference signal.

Referring to FIG. 6, in one embodiment, the signal processing module 500 in step S500 determines the anti-interference performance of the high-frequency partial discharge detector 10 to be detected according to the partial discharge signal and the maximum interference signal, include:

S510: Determine the anti-interference degree of the high-frequency partial discharge detector 10 to be detected according to the ratio of the maximum amplitude of the maximum interference signal to the maximum amplitude of the partial discharge signal.

S520: Determine the anti-interference performance of the high-frequency partial discharge detector 10 to be detected according to the anti-interference degree.

The signal processing module 500 can convert the maximum interference signal into an interference waveform, and obtain the maximum amplitude of the maximum interference signal by analyzing the interference waveform. The signal processing module 500 also converts the PD signal into a PD waveform, and obtains the maximum amplitude of the PD signal by analyzing the PD waveform. By calculating the ratio between the maximum amplitude of the maximum interference signal and the maximum amplitude of the PD signal by the signal processing module 500, a value can be obtained, which is recorded as the value of the high-frequency PD detector 10 to be detected. anti-interference. The anti-interference performance of the high-frequency partial discharge detector 10 to be detected can be determined by the anti-interference degree. If the anti-interference degree is larger, it means that the anti-interference performance of the high-frequency partial discharge detector 10 to be detected is better.

In one embodiment, the signal processing module 500 may calculate a ratio between the maximum amplitude of the PD signal and the maximum amplitude of the maximum interference signal to obtain a value, which is recorded as an anti-interference value. The smaller the anti-interference value is, the better the anti-interference performance of the high-frequency partial discharge detector 10 to be detected is.

The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, all It is considered to be the range described in this specification.

The above-mentioned embodiments only represent several embodiments of the present application, and the descriptions thereof are relatively specific and detailed, but should not be construed as a limitation on the scope of the patent of the present application. It should be pointed out that for those skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the scope of protection of the patent of the present application shall be subject to the appended claims.

Claims (10)

1. an anti-interference performance detection device of a high-frequency partial discharge detector, is characterized in that, comprises: PD signal generation module, used to generate PD signal; a first signal acquisition module, which is signal-connected to the PD signal generation module and used for acquiring the PD signal; The interference signal generation module is used to generate interference signals of different amplitudes; a second signal acquisition module, which is signal-connected to the interference signal generation module for collecting the interference signal; The signal processing module is connected to the first signal acquisition module and the second signal acquisition module, and the signal processing module is used for detecting the high frequency partial discharge detector to be detected at the different amplitudes. Under the interference of the interference signal, the detection result of the partial discharge signal determines the maximum interference signal that the high-frequency partial discharge detector to be detected can resist, and determines the maximum interference signal according to the maximum interference signal and the partial discharge signal. The anti-interference performance of the high-frequency partial discharge detector to be detected is described. 2. The anti-jamming performance detection device of the high-frequency partial discharge detector according to claim 1, wherein the partial discharge signal generation module comprises: Plate electrodes for generating electric fields; The partial discharge signal generating component is signally connected to the first signal acquisition module, and the partial discharge signal generating component is arranged in the electric field and used for generating the partial discharge signal based on the electric field. 3. The anti-jamming performance detection device of the high-frequency partial discharge detector according to claim 2, wherein the partial discharge signal generation module further comprises: The insulating oil cup is provided with an accommodating cavity, the flat electrode and the partial discharge signal generating assembly are arranged in the accommodating cavity, and the insulating oil cup is used for isolating air. 4. The anti-jamming performance detection device of a high-frequency partial discharge detector according to claim 1, wherein the interference signal generation module comprises: Cable termination assemblies for generating the initial interfering signal; The signal amplifying component is electrically connected to the cable terminal component, and is used for amplifying the initial interference signal by different multiples to obtain the interference signal with different amplitudes. 5. The anti-jamming performance detection device of the high-frequency partial discharge detector according to claim 1, is characterized in that, also comprises: The third signal acquisition module is connected with both the PD signal generation module and the interference signal generation module, and is used for collecting the mixed signal formed by the PD signal and the interference signal. A high-frequency partial discharge detector is used to detect the partial discharge signal in the mixed signal. 6 . The anti-jamming performance detection device of a high-frequency partial discharge detector according to claim 1 , wherein the signal processing module is specifically used to measure the maximum amplitude of the maximum interference signal and the partial discharge according to the maximum amplitude of the maximum interference signal. 7 . The maximum amplitude of the signal is used to determine the anti-interference degree of the high-frequency partial discharge detector to be detected, so as to determine the anti-interference performance of the high-frequency partial discharge detector to be detected. 7. The anti-jamming performance detection device of the high-frequency partial discharge detector according to claim 1, is characterized in that, also comprises: a power module, electrically connected to the PD signal generating module and the signal processing module; a transformer, electrically connected between the power supply module and the PD signal generating module, and electrically connected between the power supply module and the signal processing module, the transformer is used for regulating the power supply The voltage of the power supply provided by the module to the PD signal generating module and the signal processing module. 8 . The anti-interference performance detection device of a high-frequency partial discharge detector according to claim 1 , wherein the first signal acquisition module and the second signal acquisition module are high-frequency current transformers. 9 . 9. A method of applying the anti-jamming performance detection device of the high-frequency partial discharge detector according to any one of claims 1 to 8 to detect the anti-jamming performance of the high-frequency partial discharge detector to be detected, it is characterized in that, include: Generate a partial discharge signal through the partial discharge signal generating module, and acquire the partial discharge signal through the first signal acquisition module; Generate interference signals of different amplitudes through the interference signal generating module; Detecting the partial discharge signal under the interference of the interference signals of different amplitudes by the high-frequency partial discharge detector to be detected, to obtain a detection result; The signal processing module determines the maximum interference signal that the high-frequency partial discharge detector to be detected can resist according to the detection result, and obtains the maximum interference signal through the second signal acquisition module, At the same time, the signal processing module determines the anti-interference performance of the high-frequency partial discharge detector to be detected according to the partial discharge signal and the maximum interference signal. 10. The method according to claim 9, wherein the signal processing module determines the anti-interference performance of the high-frequency partial discharge detector to be detected according to the partial discharge signal and the maximum interference signal, include: Determine the anti-interference degree of the high-frequency partial discharge detector to be detected according to the ratio of the maximum amplitude of the maximum interference signal and the maximum amplitude of the partial discharge signal; The anti-interference performance of the high-frequency partial discharge detector to be detected is determined according to the anti-interference degree.

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