CN111856221A - Partial discharge detection system - Google Patents
Partial discharge detection system Download PDFInfo
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- CN111856221A CN111856221A CN202010543003.5A CN202010543003A CN111856221A CN 111856221 A CN111856221 A CN 111856221A CN 202010543003 A CN202010543003 A CN 202010543003A CN 111856221 A CN111856221 A CN 111856221A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
- G01R31/1272—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of cable, line or wire insulation, e.g. using partial discharge measurements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R13/00—Arrangements for displaying electric variables or waveforms
- G01R13/02—Arrangements for displaying electric variables or waveforms for displaying measured electric variables in digital form
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
Abstract
The invention relates to the technical field of partial discharge detection, and discloses a partial discharge detection system. The wireless phase detection device collects phase signals; the detection device collects partial discharge signals through partial discharge tests and receives the phase signals collected by the wireless phase detection device. The detection device can also analyze and process the phase signal and the partial discharge signal to obtain a detection signal of the outdoor cable terminal of the high-voltage cable line. The partial discharge detection system provided by the invention is simple and convenient to operate, realizes the insulation state detection of the outdoor cable terminal, provides technical guarantee for the safe and reliable operation of the outdoor cable terminal, can enable a detector to be far away from a high-voltage area, and solves the personal safety problem caused by the high-altitude operation of the detector.
Description
Technical Field
The invention relates to the technical field of partial discharge detection, in particular to a partial discharge detection system.
Background
The detection of partial discharge in the presence of electricity is one of the most effective means for detecting the insulation state of a high-voltage cable line. At present, high-voltage cable lines are mainly required to be detected in a high-frequency band, and partial discharge signals of the high-voltage cable lines are collected on a metal sheath grounding wire of a cable accessory through a high-frequency mutual inductor. However, the high voltage cable termination is mounted on a cable termination tower, generally 20 meters or more from the ground, and the tower body does not have a detection platform. Meanwhile, the grounding wire of the terminal metal sheath of the high-voltage cable terminal is short-circuited on the tower body terminal platform of the cable terminal tower. The length of a grounding wire installed at an outdoor cable terminal in high altitude is only about 1 meter generally, and the safety distance of 110kV voltage live equipment is 1.5 meters, so that the length of the grounding wire of the high-voltage cable terminal cannot meet the safety distance, a detector cannot adopt a high-frequency transformer to collect a partial discharge signal on the grounding wire, and effective partial discharge detection is difficult to be carried out on the outdoor cable terminal.
Disclosure of Invention
In view of the above, it is necessary to provide a partial discharge detection system for solving the problem that it is difficult to perform effective partial discharge detection for outdoor cable terminals.
A partial discharge detection system comprises a wireless phase detection device, a phase detection unit and a phase detection unit, wherein the wireless phase detection device is used for acquiring phase signals of an outdoor cable terminal; the detection device is connected with the wireless phase detection device and is used for acquiring a partial discharge signal of the outdoor cable terminal, receiving the phase signal acquired by the wireless phase detection device and analyzing and processing the partial discharge signal and the phase signal to acquire a detection signal of the outdoor cable terminal; and the moving device is used for moving the detection device to a preset position.
According to the partial discharge detection system, the detection device is arranged on the mobile device, and a detection person can control the mobile device to move the detection device to the position of the outdoor cable terminal, where a partial discharge test is required. The wireless phase detection device collects phase signals of the outdoor cable terminal and transmits the phase signals to the detection device. The detection device carries out partial discharge test on the outdoor cable terminal, collects partial discharge signals of the outdoor cable terminal, and receives the phase signals collected by the wireless phase detection device. The detection device can also analyze and process the phase signal and the partial discharge signal to obtain a detection signal of the outdoor cable terminal of the high-voltage cable line. The partial discharge detection system provided by the invention solves the problem that the outdoor terminal installed in the high altitude on the cable terminal tower is difficult to carry out partial discharge detection, and simultaneously can enable the detection personnel to be far away from the high voltage area, thereby solving the personal safety problem caused by the high altitude operation of the detection personnel and ensuring the safety of the detection personnel. The partial discharge detection system is simple and convenient to operate, realizes the detection of the insulation state of the outdoor cable terminal, and provides technical support for the safe and reliable operation of the outdoor cable terminal.
In one embodiment, the detection device comprises a sensor for collecting a partial discharge signal of the outdoor cable terminal; the signal processor is connected with the sensor and used for amplifying and processing the partial discharge signal detected by the sensor; the wireless receiving device is connected with the wireless phase detection device and is used for receiving the phase signals acquired by the wireless phase detection device; the oscilloscope is respectively connected with the signal processor and the wireless receiving device and is used for converting the phase signal and the processed partial discharge signal into digital signals; and the oscilloscope control module is connected with the oscilloscope and used for carrying out signal analysis on the digital signal and filtering an interference signal to obtain the detection signal.
In one embodiment, the test frequency band of the sensor is a very high frequency.
In one embodiment, the partial discharge detection system further includes a control device, connected to the detection device, and configured to control the detection device to collect a partial discharge signal of the outdoor cable terminal and receive the detection signal sent by the detection device.
In one embodiment, the wireless phase detection device comprises a phase transformer connected with the outdoor cable terminal and used for collecting phase signals of the outdoor cable terminal; and the wireless transmitting device is respectively connected with the phase transformer and the wireless receiving device and is used for transmitting the phase signal acquired by the phase transformer to the wireless receiving device.
In one embodiment, the mobile device comprises: the loading equipment is used for loading the detection device; and the loading equipment remote control device is connected with the loading equipment and used for controlling the loading equipment to move to the preset position.
In one embodiment, the loading device is a drone; the loading equipment remote control device is an unmanned aerial vehicle remote control device.
In one embodiment, the partial discharge detection system further includes a communication module, respectively connected to the detection device and the control device, for establishing a communication connection between the detection device and the control device.
In one embodiment, the communication module comprises a 4G communication module or a 5G communication module.
In one embodiment, the partial discharge detection system further includes an independent power supply connected to the detection device for supplying power to the detection device.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments or the conventional technologies of the present application, the drawings used in the descriptions of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the following descriptions are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a block diagram of a partial discharge detection system according to an embodiment of the present invention;
FIG. 2 is a block diagram of a detecting device according to an embodiment of the present invention;
fig. 3 is a schematic wiring diagram of a partial discharge detection system according to an embodiment of the invention.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or be connected to the other element through intervening elements. Further, "connection" in the following embodiments is understood to mean "electrical connection", "communication connection", or the like, if there is a transfer of electrical signals or data between the connected objects.
As used herein, the singular forms "a", "an" and "the" may include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises/comprising," "includes" or "including," etc., specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof. Also, as used in this specification, the term "and/or" includes any and all combinations of the associated listed items.
The high-voltage cable terminal is generally arranged on a cable terminal tower which is more than 20 meters away from the ground, and a detection platform is not arranged on the tower body. Meanwhile, the grounding wire of the metal sheath of the high-voltage cable terminal is in short connection with the tower body platform, and the high-frequency transformer is not enough for collecting partial discharge signals on the grounding wire due to the fact that the safety distance is not enough, so that the testing personnel are difficult to carry out effective partial discharge detection on the outdoor cable terminal. Aiming at the problem, the invention adopts a non-contact mode to detect the partial discharge, thereby realizing the purpose of detecting the partial discharge of the outdoor cable terminal installed in high altitude.
Fig. 1 is a block diagram of a partial discharge detection system according to an embodiment of the present invention, wherein the partial discharge detection system includes a wireless phase detection device 100, a detection device 200, and a mobile device 300. The wireless phase detection device 100 is configured to collect a phase signal of the outdoor cable terminal 10. The detection device 200 is connected to the wireless phase detection device 100, and is configured to collect the partial discharge signal of the outdoor cable terminal 10, receive the phase signal collected by the wireless phase detection device 100, and analyze and process the partial discharge signal and the phase signal to obtain the detection signal of the outdoor cable terminal 10. The detection device 200 is mounted on the mobile device 300, and the mobile device 300 is used for moving the detection device 200 to a preset position.
By arranging the detection device 200 on the mobile device 300, a detection person can control the movement of the mobile device 300 to move the detection device 200 to a position where the outdoor cable terminal 10 needs to be subjected to a partial discharge test. The wireless phase detection device 100 collects the phase signal of the outdoor cable terminal 10 and transmits the phase signal to the detection device 200. The detection device 200 performs a partial discharge test on the outdoor cable terminal 10, collects a partial discharge signal of the outdoor cable terminal 10, and receives the phase signal collected by the wireless phase detection device 100. The detection device 200 may further analyze and process the phase signal and the partial discharge signal to obtain a detection signal of the outdoor cable terminal 10 of the high-voltage cable line. The partial discharge detection system provided by the invention can solve the problem that the outdoor terminal installed in the high altitude on the cable terminal tower is difficult to carry out partial discharge detection, and can also enable the detection personnel to be far away from the high voltage area, thereby solving the personal safety problem caused by the test personnel climbing high altitude operation and ensuring the safety of the detection personnel. The partial discharge detection system is simple and convenient to operate, realizes the detection of the insulation state of the outdoor cable terminal, and provides technical support for the safe and reliable operation of the outdoor cable terminal.
Fig. 2 is a block diagram of a detection apparatus according to an embodiment of the present invention, in which the detection apparatus 200 includes a sensor 210, a signal processor 220, an oscilloscope 230, a wireless receiving apparatus 240, and an oscilloscope control module 250. The sensor 210 is configured to collect a partial discharge signal of the outdoor cable terminal 10. The signal processor 220 is connected to the sensor 210, and is configured to amplify and process the partial discharge signal detected by the sensor 210. The wireless receiving device 240 is connected to the wireless phase detecting device 240 and the oscilloscope 230, respectively, and is configured to receive the phase signal acquired by the wireless phase detecting device 100, and transmit the received phase signal to the oscilloscope 230. The oscilloscope 230 is connected to the signal processor 220, and is configured to convert the phase signal and the processed partial discharge signal into digital signals. The oscilloscope control module 250 is connected to the oscilloscope 230, and configured to perform signal analysis on the digital signal, filter an interference signal, and obtain the detection signal.
Specifically, after the detection device 200 is moved to a position where the high voltage cable line outdoor cable terminal 10 needs to perform partial discharge detection by the moving device 300. The detection device 200 collects a partial discharge signal of the outdoor cable terminal by using the sensor 210. The sensor 210 transmits the collected partial discharge signal to the signal processor 220, and the signal processor 220 amplifies the partial discharge signal and transmits the amplified partial discharge signal to the oscilloscope 230. The detection device 200 can also receive the phase signal detected by the wireless phase detection device 100 via the wireless receiving device 240, and transmit the phase signal to the oscilloscope 230. The oscilloscope 230 may convert the received amplified partial discharge signal and the received amplified phase signal into digital signals respectively for signal processing and analysis. The detection device 200 performs signal analysis on the partial discharge signal and the phase signal in the form of digital signals through the oscilloscope control module 250 to filter interference signals to obtain detection signals of the outdoor cable terminal. Detection device 200 combines mobile device 300 and need not let the measurement personnel high altitude construction, can realize the partial discharge detection to the outdoor cable terminal of high altitude installation on the cable termination tower, has ensured measurement personnel's safety, for outdoor cable terminal safe and reliable operation provides technical guarantee.
In one embodiment, the test frequency band of the sensor 210 is a very high frequency. The Very High Frequency (VHF) is a radio wave having a frequency band of 30Mhz to 300 Mhz. The test frequency band of the sensor 210 matches the operating frequency band of the outdoor cable termination 10. The sensor 210 is capable of detecting weak discharge signals, ensuring that partial discharge signals inside the outdoor cable termination 10 can be effectively detected.
Fig. 3 is a schematic wiring diagram of a partial discharge detection system according to an embodiment of the present invention, wherein the partial discharge detection system further includes a control device 400. The control device 400 is connected to the detection device 200, and is configured to control the detection device 200 to collect the partial discharge signal of the outdoor cable terminal 10, and receive the detection signal sent by the detection device 200. The control device 400 is connected to the oscilloscope control module 250 of the detection device 200. When partial discharge detection needs to be performed on the outdoor cable terminal 10, the control device 400 controls the detection device 200 to acquire a detection signal of the outdoor cable terminal, that is, the control device 400 on the ground controls the detection device 200 mounted on the mobile device 300 to perform partial discharge detection.
In one embodiment, the wireless phase detection apparatus 100 includes a phase transformer 110 and a wireless transmission apparatus 120. The phase transformer 110 is connected to the outdoor cable terminal 10, and is configured to collect a phase signal of the outdoor cable terminal. The wireless transmitting device 120 is respectively connected to the phase transformer 110 and the wireless receiving device 240, and is configured to transmit the phase signal collected by the phase transformer 110 to the wireless receiving device 240. The phase transformer 110 is installed on the tested cable terminal, and collects the phase signal of the outdoor cable terminal while performing partial discharge detection. After the phase transformer 110 collects the phase signal, the wireless transmitting device 120 is used to transmit the phase signal to the wireless receiving device 240 mounted on the mobile device 300. The wireless receiving device 240 transmits the received phase signal to the oscilloscope 230, the oscilloscope 230 converts the phase signal into a digital signal convenient for analysis and processing, and the phase signal in the form of a digital signal is used as a criterion basis for identification of an interference signal and a partial discharge signal.
In one embodiment, the mobile device 300 includes a load device 310 and a load device remote control 320. The loading device 310 is used for loading the detection apparatus 200. The loading device remote control 320 is connected to the loading device 310, and is configured to control the loading device 310 to move to the preset position. Because the high-voltage cable terminal is generally installed on a cable terminal tower which is more than 20 meters away from the ground, and a detection platform is not arranged on a tower body, detection personnel often need to work at high altitude when detecting partial discharge of the high-voltage cable terminal, and certain safety risk exists. When the detection device 200 is mounted on the loader 310, a tester can control the movement trajectory of the loader 310 on the ground by using the loader remote control device 320. The loading device 310 can move to a preset position with the detection apparatus 200 mounted thereon according to a remote control of a tester on the ground. The tester can also remotely operate through the control device 400 to control the detection device 200 mounted on the loading device 310 to perform partial discharge detection, so that the problem that the outdoor terminal mounted on the cable terminal tower in the high altitude is difficult to perform partial discharge detection is solved, meanwhile, the tester can be far away from a high-voltage area, the personal safety problem caused by the high altitude operation of the tester is solved, and the safety of the tester is guaranteed.
In one embodiment, the loading device 310 is a drone; the loader remote control 320 is an unmanned aerial vehicle remote control. The unmanned aerial vehicle is an unmanned aerial vehicle operated by utilizing a radio remote control device and a self-contained program control device, and has the advantages of small volume, low manufacturing cost, convenient use, low requirement on application environment and the like. In this embodiment, an unmanned aerial vehicle is used as the device 310, and a tester can easily complete the movement control of the unmanned aerial vehicle in the high-altitude operation on the ground through a remote control device of the unmanned aerial vehicle. The unmanned aerial vehicle realizes electronization, informatization and intelligentization partial discharge detection, and improves the work efficiency and the power supply reliability of power line inspection. The work of unmanned aerial vehicle is not influenced by environmental conditions such as weather, road conditions, and the like, so that the safety problem of high-altitude work of testers is solved, the visual dead angle of human eyes can be surveyed, and the technical guarantee is provided for safe and reliable operation of outdoor cable terminals.
In one embodiment, the partial discharge detection system further includes a communication module, respectively connected to the detection device 200 and the control device 400, for establishing a communication connection between the detection device 200 and the control device 400. After the communication connection is established between the detection device 200 and the control device 400, a tester can operate the control device 400 on the ground and control the detection device 200 in the air to perform partial discharge detection through the communication module; the detection device 200 located in the air may also transmit the detection signal acquired by the detection device 200 to the control device 400 on the ground through the communication module, so that a tester can acquire the detection signal and perform the next action, such as recording and repairing, according to the detection signal.
In one embodiment, the communication module comprises a 4G communication module or a 5G communication module. When the partial discharge detection is performed on the outdoor cable termination 10, the detection device 200 needs to be moved into the air to perform the partial discharge detection operation, so that the detection device 200 and the control device 400 cannot be connected by wire, and data exchange between the detection device 200 and the control device 400 needs to be realized by wireless communication. In this embodiment, a 4G communication module or a 5G communication module is used to establish a wireless communication connection between the detection apparatus 200 and the control apparatus 400, so that corresponding data exchange can be completed between the detection apparatus 200 and the control apparatus 400.
In one embodiment, the partial discharge detection system further comprises an independent power source (not shown) connected to the detection device 200 for supplying power to the detection device 200. Since the detection device 200 is mounted on the mobile device 300, it cannot be connected to a power supply on the ground. Therefore, an independent power supply is additionally arranged to independently supply power to the detection device 200 which moves to the high altitude for partial discharge detection operation, so as to ensure that the detection device 200 can normally complete the detection operation of the insulation state of the outdoor cable terminal.
When the partial discharge detection system provided by the invention is used for detecting the partial discharge of the outdoor cable terminal 10, the following steps are required to be completed:
the phase transformer 310 is first installed on the cable of the outdoor cable terminal 10 to be tested, and the wireless transmitting device 320 is connected with the phase transformer. As shown in fig. 3, the sensor 210, the signal processor 220, the oscilloscope 230, the wireless receiving device 240 and the oscilloscope control module 250 are connected to form the test module 200, and are connected to an independent power supply. The wireless transmitting device 320 and the wireless receiving device 240 are turned on, so that the wireless transmitting device 320 and the wireless receiving device 240 realize wireless connection, and whether the wireless transmitting device 320 and the wireless receiving device 240 can normally receive wireless signals transmitted by each other is confirmed. And starting the oscilloscope control module 250 and the control device 400, and controlling the connection and adjustment of 4G/5G communication between the oscilloscope control module 250 and the control device 400, so that the control device 400 can control the oscilloscope control module 250 to perform a partial discharge test.
The unmanned aerial vehicle remote control device 320 and the power supply of the loading equipment 310 are turned on, whether the loading equipment 310 can normally fly or not is debugged, and then the power supply is turned off. The sensor 210, the signal processor 220, the oscilloscope 230, the wireless receiving device 240 and the oscilloscope control module 250 are connected and installed on the loading device 310 to form the test module 200, and the connection and adjustment of 4G/5G communication between the oscilloscope control module 250 and the control device 400 are controlled again to be adjusted to a normal communication working state.
Turning on the power supplies of the loading device 310 and the unmanned aerial vehicle remote control device 320 again, debugging the loading device 310 until the loading device can stably fly, completing 1-meter low-altitude hovering, performing control preview on the local discharge test by the control device 400, confirming that the flight state of the loading device 310 is normal, and ensuring that the local discharge test function of the detection device 200 is normal. And controlling the loading device 310 to slowly ascend to a position which is far away from the outdoor cable terminal 10 and has a horizontal distance of more than 5 meters and hover to a height at which the outdoor circuit terminal needs to be subjected to a partial discharge test, and slowly horizontally moving to a position which is close to the outdoor circuit terminal 10 and has a horizontal distance of 3 meters. The control device 400 controls the oscilloscope control module 250 mounted on the loading device 310 to perform partial discharge detection until the detection is completed.
After the detection work is finished, the loading device 310 is remotely controlled to slowly land on the ground, and the unmanned aerial vehicle remote control device 320 and the power supply of the loading device 310 are sequentially turned off. The detection device 200 mounted on the loader 310 is removed, and the respective components are stored and packaged. And removing the phase transformer 110 from the tested cable, releasing the connection between the phase transformer 110 and the wireless transmitting device 120, and accommodating and boxing the components. The control device 400 is powered off and stored in a box. After the operations are completed, the application of the partial discharge detection system provided by the invention in the partial discharge detection of the outdoor cable terminal based on the unmanned aerial vehicle and 4G-5G communication is completed once.
In the description herein, references to the description of "some embodiments," "other embodiments," "desired embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, a schematic description of the above terminology may not necessarily refer to the same embodiment or example.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A partial discharge detection system, comprising:
the wireless phase detection device is used for acquiring phase signals of the outdoor cable terminal;
the detection device is connected with the wireless phase detection device and is used for acquiring a partial discharge signal of the outdoor cable terminal, receiving the phase signal acquired by the wireless phase detection device and analyzing and processing the partial discharge signal and the phase signal to acquire a detection signal of the outdoor cable terminal;
and the moving device is used for moving the detection device to a preset position.
2. The partial discharge detection system of claim 1 wherein the detection device comprises:
The sensor is used for acquiring a partial discharge signal of the outdoor cable terminal;
the signal processor is connected with the sensor and used for amplifying and processing the partial discharge signal detected by the sensor;
the wireless receiving device is connected with the wireless phase detection device and is used for receiving the phase signals acquired by the wireless phase detection device;
the oscilloscope is respectively connected with the signal processor and the wireless receiving device and is used for converting the phase signal and the processed partial discharge signal into digital signals;
and the oscilloscope control module is connected with the oscilloscope and used for carrying out signal analysis on the digital signal and filtering an interference signal to obtain the detection signal.
3. The partial discharge detection system of claim 2 wherein the test frequency band of the sensor is a very high frequency.
4. The partial discharge detection system of any one of claims 1 to 3 further comprising:
and the control device is connected with the detection device and used for controlling the detection device to collect the partial discharge signal of the outdoor cable terminal and receive the detection signal sent by the detection device.
5. The partial discharge detection system of claim 4 wherein the wireless phase detection device comprises:
the phase transformer is connected with the outdoor cable terminal and is used for acquiring a phase signal of the outdoor cable terminal;
and the wireless transmitting device is respectively connected with the phase transformer and the wireless receiving device and is used for transmitting the phase signal acquired by the phase transformer to the wireless receiving device.
6. The partial discharge detection system of claim 1 wherein the mobile device comprises:
the loading equipment is used for loading the detection device;
and the loading equipment remote control device is connected with the loading equipment and used for controlling the loading equipment to move to the preset position.
7. The partial discharge detection system of claim 6 wherein the loading device is an unmanned aerial vehicle; the loading equipment remote control device is an unmanned aerial vehicle remote control device.
8. The partial discharge detection system of claim 4 further comprising:
and the communication module is respectively connected with the detection device and the control device and used for establishing communication connection between the detection device and the control device.
9. The partial discharge detection system of claim 8 wherein the communication module comprises a 4G communication module or a 5G communication module.
10. The partial discharge detection system of claim 1 further comprising:
and the independent power supply is connected with the detection device and used for supplying power to the detection device.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113625140A (en) * | 2021-08-19 | 2021-11-09 | 山东通广电子有限公司 | Ultrahigh frequency partial discharge intelligent online detector and method |
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| CN210665928U (en) * | 2019-02-14 | 2020-06-02 | 石家庄嘉诚联信科技开发有限公司 | Quick detection device of appearance is put in airborne ultrasonic wave office |
| CN109799434A (en) * | 2019-03-01 | 2019-05-24 | 深圳供电局有限公司 | PD Pattern Recognition system and method |
| CN209375014U (en) * | 2019-03-15 | 2019-09-10 | 国网安徽省电力有限公司宣城供电公司 | A kind of distribution line inspection device |
| CN111257708A (en) * | 2020-03-23 | 2020-06-09 | 上海格鲁布科技有限公司 | Partial discharge detection device based on unmanned aerial vehicle patrols and examines |
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| CN113625140A (en) * | 2021-08-19 | 2021-11-09 | 山东通广电子有限公司 | Ultrahigh frequency partial discharge intelligent online detector and method |
| CN113625140B (en) * | 2021-08-19 | 2024-03-26 | 山东通广电子有限公司 | Ultrahigh frequency partial discharge intelligent online detector and method |
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