CN115327323A - Mobile GIS ultrahigh frequency local signal detection device - Google Patents
Mobile GIS ultrahigh frequency local signal detection device Download PDFInfo
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- CN115327323A CN115327323A CN202211077495.9A CN202211077495A CN115327323A CN 115327323 A CN115327323 A CN 115327323A CN 202211077495 A CN202211077495 A CN 202211077495A CN 115327323 A CN115327323 A CN 115327323A
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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
- G01R31/1218—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 using optical methods; using charged particle, e.g. electron, beams or X-rays
Abstract
The embodiment of the application provides a mobile GIS ultrahigh frequency local signal detection device, which comprises a wireless phase sensor, an ultrahigh frequency sensor, a signal post-processing module and a judgment module, wherein the wireless phase sensor, the ultrahigh frequency sensor, the signal post-processing module and the judgment module are arranged in the detection device; the method and the device can be used for quickly, accurately and conveniently detecting and classifying the partial discharge signals in the mobile equipment.
Description
Technical Field
The application relates to the field of power detection equipment, in particular to a mobile GIS ultrahigh frequency local signal detection device.
Background
The ultrahigh frequency method is widely used for GIS partial discharge detection, when power equipment generates partial discharge, electromagnetic waves with the frequency of 0.3-3 GHz can be radiated to the periphery, and the ultrahigh frequency method can judge the type of the partial discharge by detecting the characteristics of amplitude, phase and the like of the electromagnetic waves through a sensor. Since partial discharge has a polar effect, phase information is particularly important in ultrahigh frequency partial discharge detection.
In the prior art, an ultrahigh frequency online monitoring device fixed on a GIS device can generate a synchronous signal by accessing an electrified part, and the synchronous signal is compared with an actually measured signal to obtain phase information. However, the mobile small-sized uhf partial discharge detection device usually cannot access the live equipment to acquire the synchronization signal during field detection, so that phase information cannot be acquired, and the mobile small-sized uhf partial discharge detection cannot identify the characteristic of the uhf signal. Therefore, there is a need to improve the existing field uhf partial discharge detection method to have the capability of identifying signal characteristics, so as to improve the field uhf detection level.
Disclosure of Invention
To the problem among the prior art, the application provides a portable GIS superfrequency local signal detection device, can be fast, accurate and convenient realize the detection and the categorised discernment of partial discharge signal in portable equipment.
In order to solve the technical problem, the application provides the following technical scheme:
in a first aspect, the application provides a mobile GIS ultrahigh frequency local signal detection device, which includes a wireless phase sensor, an ultrahigh frequency sensor, a signal post-processing module and a judgment module, wherein the wireless phase sensor and the ultrahigh frequency sensor are arranged in the detection device, the signal post-processing module is in signal connection with the signal post-processing module, and the signal post-processing module is in signal connection with the judgment module;
the wireless phase sensor is used for receiving electromagnetic wave signals emitted by an external GIS (geographic information System) live conductor during operation and converting the electromagnetic wave signals into voltage signals with the same phase;
the ultrahigh frequency sensor is used for receiving full-frequency-band electromagnetic wave signals and converting the full-frequency-band electromagnetic wave signals into corresponding voltage to be output;
the signal post-processing module is used for receiving the voltage signal transmitted by the wireless phase sensor and the voltage output transmitted by the ultrahigh frequency sensor and outputting the signal characteristic of the voltage signal corresponding to the voltage output occurrence time;
the judging module is used for outputting the corresponding partial discharge signal type according to the signal characteristics transmitted by the signal post-processing module.
The system further comprises a database which is arranged in the detection device and is in signal connection with the judgment module, typical partial discharge signal characteristic information is stored in the database, and the database is used for transmitting the typical partial discharge signal characteristic information to the judgment module, so that the judgment module determines a partial discharge signal type corresponding to the signal characteristic transmitted by the signal post-processing module according to the typical partial discharge signal characteristic information.
The wireless phase sensor is used for transmitting a voltage signal to the signal post-processing module, and the signal pre-processing module is used for performing phase compensation operation on the voltage signal transmitted by the wireless phase sensor and transmitting the voltage signal subjected to the phase compensation operation to the signal post-processing module.
Furthermore, the device also comprises a power module arranged in the detection device, and the power module is electrically connected with the signal pre-processing module, the signal post-processing module and the judgment module respectively.
Further, the signal preprocessing module comprises a signal preprocessing unit for performing signal noise reduction, fourier transform and fundamental wave extraction operations on the voltage signal transmitted by the wireless phase sensor.
Further, the judging module includes a classification algorithm unit for determining a corresponding partial discharge signal type according to the typical partial discharge signal characteristic information transmitted from the database.
According to the technical scheme, the application provides a portable GIS superfrequency local signal detection device, places wireless phase sensor, superfrequency sensor, signal post-processing module and the judgment module in detection device in through in, wireless phase sensor with superfrequency sensor with signal post-processing module signal connection, signal post-processing module with judgment module signal connection, detection and classification discernment that can be quick, accurate and convenient realize the partial discharge signal in portable equipment.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of the mobile GIS uhf local signal detection device according to the present application.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the accompanying drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances in order to facilitate the description of the embodiments of the application herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
In consideration of the fact that in the prior art, an ultrahigh frequency online monitoring device fixed on GIS equipment can generate a synchronous signal by accessing an electrified part, and the synchronous signal is compared with an actually measured signal to obtain phase information. However, the mobile small-sized ultrahigh frequency partial discharge detection device usually cannot access the live equipment to acquire the synchronous signal during field detection, so that phase information cannot be acquired, and the mobile small-sized ultrahigh frequency partial discharge detection device cannot identify characteristics of the ultrahigh frequency signal. In order to realize the detection and classification recognition of partial discharge signals in mobile equipment quickly, accurately and conveniently, the application provides an embodiment of a mobile GIS ultrahigh frequency local signal detection device, referring to fig. 1, in this embodiment, the mobile GIS ultrahigh frequency local signal detection device specifically includes:
the wireless phase sensor, the ultrahigh frequency sensor, the signal post-processing module and the judgment module are arranged in the detection device, the wireless phase sensor and the ultrahigh frequency sensor are in signal connection with the signal post-processing module, and the signal post-processing module is in signal connection with the judgment module.
The wireless phase sensor is used for receiving electromagnetic wave signals emitted by an external GIS (geographic information System) live conductor during operation and converting the electromagnetic wave signals into voltage signals with the same phase.
The ultrahigh frequency sensor is used for receiving full-frequency-band electromagnetic wave signals and converting the full-frequency-band electromagnetic wave signals into corresponding voltage to be output.
The signal post-processing module is used for receiving the voltage signal transmitted by the wireless phase sensor and the voltage output transmitted by the ultrahigh frequency sensor and outputting the signal characteristics of the voltage signal corresponding to the voltage output occurrence time.
The judging module is used for outputting the corresponding partial discharge signal type according to the signal characteristics transmitted by the signal post-processing module.
Specifically, during measurement, the wireless phase sensor receives electromagnetic waves emitted by the GIS exposed conductor during operation, outputs voltage signals with the same phase as voltage signals in the GIS, and the voltage signals output sinusoidal signals with the same phase as the voltage signals in the GIS through methods of noise reduction, voltage transformation, fundamental wave extraction and the like through the signal pre-processing module; the ultrahigh frequency sensor is placed in a GIS measuring position, is positioned in the GIS, receives and outputs electromagnetic wave signals generated by partial discharge possibly occurring in the GIS; the signal output by the signal pre-processing module and the output signal of the ultrahigh frequency sensor are input into the signal post-processing module, information such as appearance phase, amplitude, waveform and the like of the GIS partial discharge signal is obtained through comparison and analysis, and the signals are used as the input of the partial discharge signal judgment module; the partial discharge signal judgment module judges the type of the output partial discharge signal and stores the type of the output partial discharge signal in the database by using classification algorithms such as a support vector machine, decision forest, deep learning and the like for the signals and combining typical partial discharge signals and historical partial discharge signals in the database.
From the above description, according to the mobile GIS ultrahigh frequency local signal detection device provided by the embodiment of the application, through placing wireless phase sensor, ultrahigh frequency sensor, signal post-processing module and the judgment module in the detection device in, wireless phase sensor with ultrahigh frequency sensor with signal post-processing module signal connection, signal post-processing module with judgment module signal connection, can be fast, accurate and convenient realize the detection and classification recognition of partial discharge signal in mobile equipment.
As a preferred embodiment, the detection device further includes a database which is built in the detection device and is in signal connection with the determination module, the database stores typical partial discharge signal characteristic information, and the database is used for transmitting the typical partial discharge signal characteristic information to the determination module, so that the determination module determines, according to the typical partial discharge signal characteristic information, a partial discharge signal type corresponding to the signal characteristic transmitted by the signal post-processing module.
Optionally, typical partial discharge signal information is built in the database, and the database also contains partial discharge signal information measured each time.
As a preferred implementation manner, the wireless phase sensor further includes a signal preprocessing module, which is in signal connection with the signal post-processing module, and the signal preprocessing module is configured to perform a phase compensation operation on the voltage signal transmitted by the wireless phase sensor, and transmit the voltage signal after the phase compensation operation to the signal post-processing module.
Optionally, the signal preprocessing module can perform operations such as noise reduction and fourier transform on the received signal to extract a fundamental wave, and has a phase compensation function, so that the phase of the output signal is the same as that of the fundamental wave of the input signal.
As a preferred embodiment, the detection device further comprises a power module built in the detection device, and the power module is electrically connected to the signal preprocessing module, the signal post-processing module and the judgment module respectively.
Optionally, the input of the power supply module is 220V power frequency power supply voltage, the output is stable direct current voltage, and power is provided for modules such as the signal pre-processing module, the signal post-processing module and the judgment module.
As a preferred embodiment, the signal preprocessing module includes a signal preprocessing unit for performing signal noise reduction, fourier transform and fundamental wave extraction operations on the voltage signal transmitted by the wireless phase sensor.
As a preferred embodiment, the judging module includes a classification algorithm unit configured to determine a type of the corresponding partial discharge signal according to typical partial discharge signal characteristic information transmitted by the database.
Optionally, the input of the judgment module is the output signal of the signal post-processing module and the output signal of the database, and the type of the partial discharge signal is output by using a classification algorithm such as a support vector machine, decision forest, deep learning, and the like in combination with the database data.
The algorithm parameters can be adjusted to the optimal values in real time through the database contents.
The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes and modifications that can be made by one skilled in the art without departing from the spirit and principles of the invention should fall within the protection scope of the invention.
Claims (6)
1. A mobile GIS ultrahigh frequency local signal detection device is characterized by comprising a wireless phase sensor, an ultrahigh frequency sensor, a signal post-processing module and a judgment module which are arranged in the detection device, wherein the wireless phase sensor and the ultrahigh frequency sensor are in signal connection with the signal post-processing module, and the signal post-processing module is in signal connection with the judgment module;
the wireless phase sensor is used for receiving electromagnetic wave signals emitted by an external GIS live conductor during operation and converting the electromagnetic wave signals into voltage signals with the same phase;
the ultrahigh frequency sensor is used for receiving full-frequency-band electromagnetic wave signals and converting the full-frequency-band electromagnetic wave signals into corresponding voltage to be output;
the signal post-processing module is used for receiving the voltage signal transmitted by the wireless phase sensor and the voltage output transmitted by the ultrahigh frequency sensor and outputting the signal characteristic of the voltage signal corresponding to the voltage output occurrence time;
the judging module is used for outputting the corresponding partial discharge signal type according to the signal characteristics transmitted by the signal post-processing module.
2. The mobile GIS uhf local signal detection device according to claim 1, further comprising a database disposed in the detection device and in signal connection with the determination module, wherein the database stores typical partial discharge signal characteristic information, and the database is configured to transmit the typical partial discharge signal characteristic information to the determination module, so that the determination module determines a partial discharge signal type corresponding to the signal characteristic transmitted by the signal post-processing module according to the typical partial discharge signal characteristic information.
3. The mobile GIS uhf local signal detection apparatus according to claim 1, further comprising a signal preprocessing module for signal-connecting the wireless phase sensor and the signal post-processing module, wherein the signal preprocessing module is configured to perform a phase compensation operation on the voltage signal transmitted from the wireless phase sensor and transmit the voltage signal after the phase compensation operation to the signal post-processing module.
4. The mobile GIS UHF local signal detection device of claim 3 further comprising a power module built in the detection device, wherein the power module is electrically connected to the signal pre-processing module, the signal post-processing module and the judgment module respectively.
5. The mobile GIS uhf local signal detection apparatus of claim 3, wherein the signal preprocessing module comprises a signal preprocessing unit for performing signal noise reduction, fourier transform and fundamental wave extraction operations on the voltage signal transmitted from the wireless phase sensor.
6. The mobile GIS uhf local signal detection apparatus according to claim 2, wherein the determination module includes a classification algorithm unit for determining a type of the corresponding partial discharge signal according to the characteristic information of the typical partial discharge signal transmitted from the database.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202211077495.9A CN115327323A (en) | 2022-09-05 | 2022-09-05 | Mobile GIS ultrahigh frequency local signal detection device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211077495.9A CN115327323A (en) | 2022-09-05 | 2022-09-05 | Mobile GIS ultrahigh frequency local signal detection device |
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| CN115327323A true CN115327323A (en) | 2022-11-11 |
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| CN202211077495.9A Pending CN115327323A (en) | 2022-09-05 | 2022-09-05 | Mobile GIS ultrahigh frequency local signal detection device |
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- 2022-09-05 CN CN202211077495.9A patent/CN115327323A/en active Pending
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