CN102508129A - Insulator discharge detection method and device - Google Patents
Insulator discharge detection method and device Download PDFInfo
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- CN102508129A CN102508129A CN2011103311189A CN201110331118A CN102508129A CN 102508129 A CN102508129 A CN 102508129A CN 2011103311189 A CN2011103311189 A CN 2011103311189A CN 201110331118 A CN201110331118 A CN 201110331118A CN 102508129 A CN102508129 A CN 102508129A
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Abstract
The invention belongs to the field of electrical power engineering and provides an insulator discharge detection method and an insulator discharge detection device. According to the method, corresponding analog electric signals are generated according to ultrasonic waves which are transmitted when an insulator discharges electricity, and are converted into digital electric signals; and discharge type reference information is generated by using the digital electric signals, and is output according to an operating instruction of a client. Therefore, the client can determine the discharge type of the insulator according to the discharge type reference information and judge whether the insulator has a fault or not, and the problem that a detection result has an overlarge error because the discharge type of the insulator cannot be determined in the prior art is solved.
Description
Technical field
The invention belongs to the power engineering field, relate in particular to a kind of insulator arc-over method for detecting and device.
Background technology
Insulator in generating plant, transformer station and the transmission line of electricity is because of the influence deterioration of factor such as environment and electric current variation in inherent vice, material qualitative change and the operational process; Thereby faults such as flashover, ground connection or explosion occur, the safe operation of generating plant, transformer station and ultra-high-tension power transmission line has been caused great potential safety hazard.
To the existing problem of above-mentioned insulator breakdown, prior art is the hyperacoustic principle of discharge generation during according to insulator breakdown, confirms through detecting this hyperacoustic intensity whether insulator breaks down.Yet, can not judge through ultrasonic intensity and the electric discharge type of insulator can cause the error of testing result bigger than normal like this, if accurately judge the electric discharge type of insulator, need obtain hyperacoustic frequency spectrum.Therefore, prior art exists because of judging that the insulator arc-over type causes the excessive problem of testing result error.
Summary of the invention
The invention provides a kind of insulator arc-over method for detecting, be intended to solve that prior art exists because of judging that the insulator arc-over type causes the excessive problem of testing result error.
The present invention is achieved in that a kind of insulator arc-over method for detecting, and said insulator arc-over method for detecting may further comprise the steps:
The ultrasound wave that sends when gathering insulator arc-over also generates corresponding analog electrical signal;
Convert said analog electrical signal to digital electric signal;
Generate the electric discharge type reference information according to said digital electric signal;
Export said electric discharge type reference information according to the operational order of user side.
Another object of the present invention is to provide a kind of insulator arc-over arrangement for detecting, said insulator arc-over arrangement for detecting comprises:
The ultrasound wave sensing unit, the ultrasound wave that sends when being used to gather insulator arc-over also generates corresponding analog electrical signal;
Signal conversion unit is used for converting said analog electrical signal to digital electric signal;
The reference information acquiring unit is used for generating the electric discharge type reference information according to said digital electric signal;
User's response unit is used for correspondingly exporting the one or more data of said electric discharge type reference information according to the operational order of user side.
In the present invention; The ultrasound wave that sends through according to insulator arc-over the time generates corresponding analog electrical signal; And after converting said analog electrical signal to digital electric signal; Generate the electric discharge type reference information by said digital electric signal; Export the electric discharge type reference information according to the operational order of user side at last; Said electric discharge type reference information comprises that the frequency spectrum density data of the maximum value data of the Wave data of said digital electric signal, said digital electric signal, said digital electric signal reaches and the corresponding frequency values data of maximum value data of said digital electric signal; Thereby make user side can judge the electric discharge type of said insulator, and then confirm whether said insulator breaks down according to said electric discharge type reference information, solved that prior art exists because of judging that the insulator arc-over type causes the excessive problem of testing result error.
Description of drawings
Fig. 1 is the realization flow figure of the insulator arc-over method for detecting that provides of the embodiment of the invention;
Fig. 2 is the modular structure figure of the insulator arc-over arrangement for detecting that provides of the embodiment of the invention.
Embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Below in conjunction with specific embodiment concrete realization of the present invention is described in detail:
Embodiment:
Fig. 1 illustrates the realization flow of the insulator arc-over method for detecting that the embodiment of the invention provides, and for the ease of explanation, only shows the part relevant with the embodiment of the invention, and details are as follows:
In step S101, the ultrasound wave that sends when gathering insulator arc-over also generates corresponding analog electrical signal.
In step S102, convert analog electrical signal to digital electric signal.
Step S102 specifically comprises:
This analog electrical signal is amplified and filtering;
To convert digital electric signal to through amplification and filtered analog electrical signal.
Wherein, it is to be enough to carry out analog-to-digital voltage range in order to be amplified to by the faint analog electrical signal that generates among the step S101 that analog electrical signal is amplified with filtering, and its undesired signal that is mingled with is carried out filtering.
In step S103, generate the electric discharge type reference information according to digital electric signal.
Step S103 is specially:
With 1024 is the SI to gather digital electric signal; And obtain the Wave data and the maximum value data of this digital electric signal; Then this digital electric signal being added Hamming (hamming) window handles; And obtain the frequency spectrum density data of this digital electric signal through Fourier transform, at last according to this frequency spectrum density obtain with digital electric signal in the corresponding frequency values data of maximum value data.
Wherein, adopt 1024 collection standards, and digital electric signal is added Hamming (hamming) window handle and help to improve frequency domain resolution, make the data of obtaining more accurate as digital electric signal.
Wherein, the electric discharge type reference information comprises the Wave data of digital electric signal, the maximum value data of digital electric signal, the frequency spectrum density data of digital electric signal, and with the corresponding frequency values data of the maximum value data of this digital electric signal.
In step S104, the electric discharge type reference information is stored in a preset storage space.
Wherein, the electric discharge type reference information is stored so that the user can transfer the data relevant with the insulator arc-over situation at any time the electric discharge type of insulator is analyzed.
In step S105, correspondingly export the one or more data in the electric discharge type reference information according to the operational order of user side.
In the practical implementation process; The operational order that sends according to user side; Can optionally from preset storage space, read the part or all of data in the electric discharge type reference information, and export it to display terminal, supply the user to carry out the insulator arc-over type analysis.For example; The operational order that user side sends need obtain the maximal value of digital electric signal and the frequency spectrum density of digital electric signal; Then only need from preset storage space, to read the maximal value of digital electric signal and the frequency spectrum density of digital electric signal, and both outputs are got final product.
In embodiments of the present invention; The ultrasound wave that sends through according to insulator arc-over the time generates corresponding analog electrical signal; And after converting this analog electrical signal to digital electric signal; Generate the electric discharge type reference information by this digital electric signal; At last according to the operational order output electric discharge type reference information of user side, this electric discharge type reference information comprise Wave data, the digital electric signal of digital electric signal maximum value data, digital electric signal the frequency spectrum density data and with the corresponding frequency values data of maximal value of this digital electric signal, thereby make user side can judge the electric discharge type of said insulator according to the electric discharge type reference information; And then confirm whether said insulator breaks down, solved that prior art exists because of judging that the insulator arc-over type causes the excessive problem of testing result error.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method is to instruct relevant hardware to accomplish through program; Described program can be stored in the computer read/write memory medium; Described storage medium is like ROM/RAM, disk, CD etc.
Embodiment:
Fig. 2 illustrates the modular structure of the insulator arc-over arrangement for detecting that the embodiment of the invention provides, and for the ease of explanation, only shows the part relevant with the embodiment of the invention, and details are as follows:
This insulator arc-over arrangement for detecting comprises ultrasound wave sensing unit 100, signal conversion unit 200, reference information acquiring unit 300, storage unit 400 and user's response unit 500.
Ultrasound wave sensing unit 100, the ultrasound wave that sends when being used to gather insulator arc-over also generates corresponding analog electrical signal.
In embodiments of the present invention, signal conversion unit 200 specifically comprises:
Wherein, Amplifying with filtering through 201 pairs of analog electrical signals of signal processing unit is to be enough to carry out analog-to-digital voltage range in order to be amplified to by the faint analog electrical signal that ultrasound wave sensing unit 100 generates, and its undesired signal that is mingled with is carried out filtering.
Reference information acquiring unit 300 is used for generating the electric discharge type reference information according to the digital electric signal of signal conversion unit 200 outputs.
In embodiments of the present invention, reference information acquiring unit 300 specifically comprises:
Time domain data acquiring unit 301, being used for 1024 is the SI to gather digital electric signal, and obtains the Wave data and the maximum value data of this digital electric signal;
Frequency spectrum acquiring unit 302 is used for that digital electric signal is added Hamming (hamming) window and handles, and obtains the frequency spectrum density data of this digital electric signal through Fourier transform;
Frequency values acquiring unit 303 is used for obtaining and the corresponding frequency values data of the maximum value data of digital electric signal according to this frequency spectrum density data.
Wherein, time domain data acquiring unit 301 adopts 1024 collection standards as digital electric signal, and this digital electric signal is added Hamming (hamming) window handles and help to improve frequency domain resolution, makes the data of obtaining more accurate.
Wherein, the electric discharge type reference information comprises the Wave data of digital electric signal, the maximum value data of digital electric signal, the frequency spectrum density data of digital electric signal, and with the corresponding frequency values data of the maximum value data of this digital electric signal.
Wherein, the electric discharge type reference information is stored so that the user can transfer the data relevant with the insulator arc-over situation at any time the electric discharge type of insulator is analyzed.
User's response unit 500 is used for correspondingly exporting according to the operational order of user side one or more data of electric discharge type reference information.
In the practical implementation process, the operational order according to user side sends can optionally read the part or all of data in the electric discharge type reference information from storage unit 400, and exports it to display terminal, supplies the user to carry out the insulator arc-over type analysis.For example; The operational order that user side sends need obtain the maximal value of digital electric signal and the frequency spectrum density of digital electric signal; Then only need from storage unit 400, to read the maximal value of digital electric signal and the frequency spectrum density of digital electric signal, and both outputs are got final product.
In embodiments of the present invention; The ultrasound wave that sends through according to insulator arc-over the time generates corresponding analog electrical signal; And after converting this analog electrical signal to digital electric signal; Generate the electric discharge type reference information by this digital electric signal; At last according to the operational order output electric discharge type reference information of user side, this electric discharge type reference information comprise Wave data, the digital electric signal of digital electric signal maximum value data, digital electric signal the frequency spectrum density data and with the corresponding frequency values data of maximal value of this digital electric signal, thereby make user side can judge the electric discharge type of said insulator according to the electric discharge type reference information; And then confirm whether said insulator breaks down, solved that prior art exists because of judging that the insulator arc-over type causes the excessive problem of testing result error.
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. an insulator arc-over method for detecting is characterized in that, said insulator arc-over method for detecting may further comprise the steps:
The ultrasound wave that sends when gathering insulator arc-over also generates corresponding analog electrical signal;
Convert said analog electrical signal to digital electric signal;
Generate the electric discharge type reference information according to said digital electric signal;
Correspondingly export the one or more data in the said electric discharge type reference information according to the operational order of user side.
2. insulator arc-over method for detecting as claimed in claim 1 is characterized in that, the step that said operational order according to user side is correspondingly exported the one or more data in the said electric discharge type reference information also comprises the steps: before
Said electric discharge type reference information is stored in a preset storage space.
3. insulator arc-over method for detecting as claimed in claim 1; It is characterized in that; Said electric discharge type reference information comprises the frequency spectrum density data of the maximum value data of the Wave data of said digital electric signal, said digital electric signal, said digital electric signal, and with corresponding frequency values data of the maximum value data of said digital electric signal etc.
4. insulator arc-over method for detecting as claimed in claim 1 is characterized in that, the step that said analog electrical signal is converted to digital electric signal specifically comprises:
This analog electrical signal is amplified and filtering;
To convert digital electric signal to through amplification and filtered analog electrical signal.
5. insulator arc-over method for detecting as claimed in claim 1 is characterized in that, the step that generates the electric discharge type reference information according to said digital electric signal is specially:
With 1024 is the SI to gather digital electric signal; And obtain the Wave data and the maximum value data of said digital electric signal; Then said digital electric signal being added Hamming window handles; And obtain the frequency spectrum density data of said digital electric signal through Fourier transform, at last according to said frequency spectrum density data obtain with digital electric signal in corresponding frequency values data of maximum value data etc.
6. an insulator arc-over arrangement for detecting is characterized in that, said insulator arc-over arrangement for detecting comprises:
The ultrasound wave sensing unit, the ultrasound wave that sends when being used to gather insulator arc-over also generates corresponding analog electrical signal;
Signal conversion unit is used for converting said analog electrical signal to digital electric signal;
The reference information acquiring unit is used for generating the electric discharge type reference information according to said digital electric signal;
User's response unit is used for correspondingly exporting according to the operational order of user side one or more data of said electric discharge type reference information.
7. insulator arc-over arrangement for detecting as claimed in claim 5 is characterized in that, said insulator arc-over arrangement for detecting also comprises:
Storage unit is used to store the electric discharge type reference information that said reference information acquiring unit generates.
8. insulator arc-over arrangement for detecting as claimed in claim 5; It is characterized in that; Said electric discharge type reference information comprises the Wave data of digital electric signal, the maximum value data of digital electric signal, the frequency spectrum density data of digital electric signal, and with the corresponding frequency values data of the maximum value data of this digital electric signal.
9. insulator arc-over arrangement for detecting as claimed in claim 5 is characterized in that, said signal conversion unit specifically comprises:
Signal processing unit is used for analog electrical signal is amplified and filtering;
AD conversion unit is used for converting digital electric signal to through amplification and filtered analog electrical signal.
10. insulator arc-over arrangement for detecting as claimed in claim 5 is characterized in that, said reference information acquiring unit specifically comprises:
The time domain data acquiring unit, being used for 1024 is the SI to gather digital electric signal, and obtains the Wave data and the maximum value data of said digital electric signal;
The frequency spectrum acquiring unit is used for that said digital electric signal is added Hamming window and handles, and obtains the frequency spectrum density data of said digital electric signal through Fourier transform;
The frequency values acquiring unit is used for obtaining and the corresponding frequency values data of said maximum value data according to said frequency spectrum density data.
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| CN2011103311189A CN102508129A (en) | 2011-10-27 | 2011-10-27 | Insulator discharge detection method and device |
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| CN2011103311189A CN102508129A (en) | 2011-10-27 | 2011-10-27 | Insulator discharge detection method and device |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08320357A (en) * | 1995-05-25 | 1996-12-03 | Furukawa Electric Co Ltd:The | Method and device for detecting partial discharge by ultrasonic sensor |
| JPH11174110A (en) * | 1997-12-12 | 1999-07-02 | Kawasaki Steel Corp | Portable corona discharge detecting apparatus |
| US6545485B1 (en) * | 1999-01-21 | 2003-04-08 | Radar Engineers | Ultrasonic pinpointer for power system sources of interference |
| CN2699311Y (en) * | 2004-04-30 | 2005-05-11 | 武汉大学 | Insulator dirtiness discharge monitoring device |
| CN101644737A (en) * | 2009-09-10 | 2010-02-10 | 优能电气（天津）有限公司 | Positioning device and positioning method for fault detection of local discharge |
| CN201974503U (en) * | 2011-03-31 | 2011-09-14 | 广东电网公司广州供电局 | Ultrasonic partial discharge detection analyser |
-
2011
- 2011-10-27 CN CN2011103311189A patent/CN102508129A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08320357A (en) * | 1995-05-25 | 1996-12-03 | Furukawa Electric Co Ltd:The | Method and device for detecting partial discharge by ultrasonic sensor |
| JPH11174110A (en) * | 1997-12-12 | 1999-07-02 | Kawasaki Steel Corp | Portable corona discharge detecting apparatus |
| US6545485B1 (en) * | 1999-01-21 | 2003-04-08 | Radar Engineers | Ultrasonic pinpointer for power system sources of interference |
| CN2699311Y (en) * | 2004-04-30 | 2005-05-11 | 武汉大学 | Insulator dirtiness discharge monitoring device |
| CN101644737A (en) * | 2009-09-10 | 2010-02-10 | 优能电气（天津）有限公司 | Positioning device and positioning method for fault detection of local discharge |
| CN201974503U (en) * | 2011-03-31 | 2011-09-14 | 广东电网公司广州供电局 | Ultrasonic partial discharge detection analyser |
Non-Patent Citations (2)
| Title |
|---|
| 伍志荣 等: "运行变压器、电抗器振动噪声及局部放电超声波信号的频谱分析", 《高电压技术》, no. 1, 31 January 1991 (1991-01-31), pages 44 - 48 * |
| 张江 等: "基于超声波法的变压器局部放电监测系统设计", 《湖北电力》, vol. 30, no. 1, 28 February 2006 (2006-02-28), pages 28 - 30 * |
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Application publication date: 20120620 |