CN202166623U - Device for realizing uninterrupted detection for pollution degree of insulator - Google Patents
Device for realizing uninterrupted detection for pollution degree of insulator Download PDFInfo
- Publication number
- CN202166623U CN202166623U CN2011202259811U CN201120225981U CN202166623U CN 202166623 U CN202166623 U CN 202166623U CN 2011202259811 U CN2011202259811 U CN 2011202259811U CN 201120225981 U CN201120225981 U CN 201120225981U CN 202166623 U CN202166623 U CN 202166623U
- Authority
- CN
- China
- Prior art keywords
- signal processor
- input end
- microwave
- detector
- directional coupler
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Testing Relating To Insulation (AREA)
- Insulators (AREA)
Abstract
The utility model discloses a device for realizing uninterrupted detection for pollution degree of an insulator, wherein a microwave antenna and a matched load are respectively connected with two input ends of a directional coupler; the output end of the direction coupler is connected with the input end of a high-frequency front end by a microwave switch; the output end of the high-frequency front end is connected with the input end of a square ratio detector and the input end of a synchronous detector respectively; both the output end of the square ratio detector and the output end of the synchronous detector pass through a filter amplifier and then are connected with the input end of a signal processor; the other input end of the directional coupler is connected with a noise generator by another microwave switch; the output end of the signal processor is connected with the two microwave switches, the synchronous detector and an upper computer respectively; and the signal processor is connected with a storage battery. The device is reasonable in design and accurate in detection, is convenient and fast, has high working efficiency and does not need to be interrupted, thereby being especially suitable for the maintenance for the insulator of an electric power system in a high-pollution region and being easy for popularization and implementation.
Description
One, technical field: the utility model relates to the filthy checkout equipment of a kind of power system insulation, particularly relates to a kind of the power failure and detects the device of insulator contamination degree.
Two. background technology: in transmission system, insulator usually reduces dielectric strength because receiving the filth influence of materials such as salinity, earth, coal ash, and then pollution flashover takes place, and causes power outage.According to incompletely statistics; Increase the weight of along with what transmission line of electricity polluted, the insulator contamination accident is only second to thunderbolt, accounts for second of power grid accident sum; And loss is 10 times of lightning strike accident, and the insulator contamination that particularly industry, agricultural, coastland take place causes expensive power loss.
The filth of removing on the insulator is one of important measures that prevent pollution flashover; Electric system at present generally all adopts and regularly removes filthy method; Having a power failure or not under the power-off condition; Insulator is cleaned or the water flushing, still, is that the flushing of hand sweeping or water all exists a common problem to need to solve: how to confirm the most appropriate cleaning or water flushing cycle.This not only relates to cost issues, the prior safe operation that relates to electrical network.
Three. the utility model content:
The utility model technical matters to be solved is: overcome the deficiency of prior art, provide a kind of reasonable in design, detect accurate, convenient and swift, high efficiency and not having a power failure of need not to have a power failure detects the device of insulator contamination degree.
The technical scheme of the utility model is: a kind of the power failure detects the device of insulator contamination degree; Contain signal processor, microwave antenna, matched load, directional coupler, square law wave detector and lock detector; Said microwave antenna is connected with two input ends of said directional coupler respectively with matched load; The output terminal of said directional coupler is connected with the input end of high frequency front-end through a microwave switch; The output terminal of said high frequency front-end is connected with the input end of said square law wave detector and lock detector respectively; The output terminal of said square law wave detector and lock detector is all through being connected with the input end of said signal processor behind the filter amplifier; Another input end of said directional coupler is connected with noise generator through another microwave switch, and the output terminal of said signal processor is connected with two microwave switches, lock detector and host computers respectively, and said signal processor is connected with accumulator.
Said high frequency front-end is made up of frequency mixer, local oscillator and intermediate frequency amplifier; Wherein, Said local oscillator all is connected with said frequency mixer with intermediate frequency amplifier; And said frequency mixer is connected with said microwave switch, and said intermediate frequency amplifier is connected with lock detector with said square law wave detector respectively.
Said signal processor is DSP signal processing chip or ARM series microprocessor.Said filter amplifier contains low-frequency amplifier circuit and filtering circuit.
The beneficial effect of the utility model is:
1, the utility model utilization Microwave Measurement technology can realize charged remote detection under the situation that does not have a power failure, does not take a sample, do not disintegrate; Obtain the pollution level of insulator to be measured; Security, real-time and the accuracy measured have been guaranteed simultaneously; Thereby greatly avoided the generation of accidents such as pollution flashover, improved the security of operation of power networks.
2, simple to operate, the visual result of the utility model, volume is little and in light weight, easy to carry simultaneously, has effectively saved human and material resources and financial resources, reduces greatly and detects cost.
3, the utility model is avoided carrying out unnecessary contact with high-tension apparatus, and is safe, in addition, helps confirming cleaning period, reduces the regular at present equipment that is caused that cleans and stops transport.
4, the utility model adopts DSP signal processing chip or ARM series microprocessor as kernel processor chip, can carry out Inversion Calculation, can also carry out complex mathematical such as Fourier transform and inverse transformation and calculate, and its speed is fast, efficient is high.
5, the utility model is reasonable in design, detection is accurate, convenient and swift, high efficiency and need not to have a power failure, and its wide accommodation is particularly useful for the maintenance of high pollution regional power system insulator, has good economic benefit after the popularization.
Four, description of drawings:
The structure principle chart of the device that Fig. 1 detects the insulator contamination degree for not having a power failure.
Five. embodiment:
Embodiment: referring to Fig. 1, among the figure, 1-microwave antenna, 2-matched load; The qualitative coupling mechanism of 3-, 4-microwave switch, 5-frequency mixer, 6-local oscillator; The 7-intermediate frequency amplifier, 8-square law wave detector, 9-filter amplifier, 10-lock detector; The 11-host computer, 12-accumulator, 13-signal processor, 14-noise generator.
The device that detects the insulator contamination degree that do not have a power failure contains signal processor 13, microwave antenna 1, matched load 2, directional coupler 3, square law wave detector 8 and lock detector 10; Wherein, Microwave antenna 1 is connected with two input ends of directional coupler 3 respectively with matched load 2; The output terminal of directional coupler 3 is connected with the input end of high frequency front-end through a microwave switch 3; The output terminal of high frequency front-end is connected with the input end of square law wave detector 8 with lock detector 10 respectively; The output terminal of square law wave detector 8 and lock detector 10 all is connected with the input end of signal processor 13 through filter amplifier 9 backs; Another input end of directional coupler 3 is connected with noise generator 14 through another microwave switch 4, and the output terminal of signal processor 13 is connected with two microwave switches 4, lock detector 10 and host computer 11 respectively, and signal processor is connected with accumulator 12.
High frequency front-end is made up of frequency mixer 5, local oscillator 6 and intermediate frequency amplifier 7; Wherein, local oscillator 6 all is connected with frequency mixer 5 with intermediate frequency amplifier 7, and; Frequency mixer 5 is connected with microwave switch 4, and intermediate frequency amplifier 7 is connected with lock detector 10 with square law wave detector 8 respectively.
During detection, the microwave signal that insulator to be measured sends is received by microwave antenna 1, and microwave switch 4 links to each other this microwave signal of microwave antenna 1 output or the comparison load signal of matched load 2 outputs under the sequential control of signal processor 13 with high frequency front-end.Microwave signal and comparison load signal export intermediate frequency amplifier 7 then to and amplify through frequency mixer 5 and local oscillator 6 difference frequencies, and amplifying signal carries out detection in lock detector 10; Detect the microwave signal of microwave antenna 1 input and compare load signal; Through the direct current component of the tested microwave signal of filter amplifier 9 outputs, this signal is through amplifying back input signal processor 13 again, and signal processor 13 is through computational analysis; The result is outputed to host computer 11, be convenient to check at any time.Amplifying signal output dc voltage behind square law wave detector 8 of intermediate frequency amplifier 7 outputs; Square law wave detector 8 is used to detect the envelope of intermediate frequency waveform; The DC voltage of its output be added in it above square being directly proportional of voltage amplitude, guaranteed the linear relationship of output voltage and input source noise temperature.The signal of square law wave detector 8 outputs is through amplifying back input signal processor 13, and signal processor 13 outputs to host computer 11 through computational analysis with the result, is convenient to check at any time.According to testing result, judge the pollution level of insulator, be convenient to confirm cleaning period, the equipment that minimizing cleaning is regularly at present caused is too much stopped transport.
Claims (4)
1. one kind does not have a power failure and detects the device of insulator contamination degree; Contain signal processor, microwave antenna, matched load, directional coupler, square law wave detector and lock detector; It is characterized in that: said microwave antenna is connected with two input ends of said directional coupler respectively with matched load; The output terminal of said directional coupler is connected with the input end of high frequency front-end through a microwave switch; The output terminal of said high frequency front-end is connected with the input end of said square law wave detector and lock detector respectively; The output terminal of said square law wave detector and lock detector is all through being connected with the input end of said signal processor behind the filter amplifier; Another input end of said directional coupler is connected with noise generator through another microwave switch, and the output terminal of said signal processor is connected with two microwave switches, lock detector and host computers respectively, and said signal processor is connected with accumulator.
2. according to claim 1 the power failure detects the device of insulator contamination degree; It is characterized in that: said high frequency front-end is made up of frequency mixer, local oscillator and intermediate frequency amplifier; Wherein, said local oscillator all is connected with said frequency mixer with intermediate frequency amplifier, and; Said frequency mixer is connected with said microwave switch, and said intermediate frequency amplifier is connected with lock detector with said square law wave detector respectively.
3. according to claim 1 the power failure detects the device of insulator contamination degree, and it is characterized in that: said signal processor is DSP signal processing chip or ARM series microprocessor.
4. detect the device of insulator contamination degree according to claim 1 or 2 or 3 described power failures, it is characterized in that: said filter amplifier contains low-frequency amplifier circuit and filtering circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202259811U CN202166623U (en) | 2011-06-30 | 2011-06-30 | Device for realizing uninterrupted detection for pollution degree of insulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202259811U CN202166623U (en) | 2011-06-30 | 2011-06-30 | Device for realizing uninterrupted detection for pollution degree of insulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202166623U true CN202166623U (en) | 2012-03-14 |
Family
ID=45802440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202259811U Expired - Fee Related CN202166623U (en) | 2011-06-30 | 2011-06-30 | Device for realizing uninterrupted detection for pollution degree of insulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202166623U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102297872A (en) * | 2011-06-30 | 2011-12-28 | 河南省电力公司郑州供电公司 | Insulator contamination live line detector based on microwave irradiation principle |
| RU2594761C1 (en) * | 2015-05-19 | 2016-08-20 | Федеральное государственное казенное военное образовательное учреждение высшего профессионального образования "Военный учебно-научный центр Военно-воздушных сил "Военно-воздушная академия имени профессора Н.Е. Жуковского и Ю.А. Гагарина" (г. Воронеж) Министерства обороны Российской Федерации | Microwave device for measurement of electrophysical parameters and detection of non-uniformities in dielectric and magneto-electric coatings on metal |
-
2011
- 2011-06-30 CN CN2011202259811U patent/CN202166623U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102297872A (en) * | 2011-06-30 | 2011-12-28 | 河南省电力公司郑州供电公司 | Insulator contamination live line detector based on microwave irradiation principle |
| RU2594761C1 (en) * | 2015-05-19 | 2016-08-20 | Федеральное государственное казенное военное образовательное учреждение высшего профессионального образования "Военный учебно-научный центр Военно-воздушных сил "Военно-воздушная академия имени профессора Н.Е. Жуковского и Ю.А. Гагарина" (г. Воронеж) Министерства обороны Российской Федерации | Microwave device for measurement of electrophysical parameters and detection of non-uniformities in dielectric and magneto-electric coatings on metal |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203054162U (en) | Comprehensive tester for partial discharge of high-voltage cable | |
| CN103091554B (en) | Steady-state harmonic wave analyzing method for line terminal synchronous measurement signal multi-bus micro-grid | |
| CN203365619U (en) | System for detecting and positioning partial discharge of cable oscillation waves | |
| CN205080227U (en) | Ground net detecting system | |
| CN203561717U (en) | Distribution board direct current ground connection alarm device | |
| CN103969556A (en) | Insulation electrified detection device for cable accessories | |
| CN103323655B (en) | Non-contact alternating current and direct current crosstalk online detecting device and non-contact alternating current and direct current crosstalk online detecting method | |
| CN201926727U (en) | Power quality monitor | |
| CN103712551A (en) | Power distribution network transformer low-voltage winding deformation on-line monitoring device and method | |
| CN104777408A (en) | TEV on-line monitoring system for partial discharge of switch cabinet based on Internet of Things | |
| CN202166623U (en) | Device for realizing uninterrupted detection for pollution degree of insulator | |
| CN104965112A (en) | Electric power system current quality assessment method | |
| CN203798969U (en) | Cable partial discharge detection system based on frequency conversion resonance voltage resistance | |
| CN203825142U (en) | Power supply line fault locating instrument | |
| CN102297872A (en) | Insulator contamination live line detector based on microwave irradiation principle | |
| CN103235276A (en) | Partial discharge signal generator | |
| CN104330626A (en) | Power grid harmonic wave monitor | |
| CN202770952U (en) | Partial discharge detection device of switch cabinet | |
| CN202066925U (en) | Harmonic monitor of electric network | |
| CN203241526U (en) | Partial discharge signal generator | |
| CN202502194U (en) | High voltage switch cabinet partial discharge on-line monitoring device | |
| CN203191498U (en) | Undercurrent grounding line selecting device | |
| CN203825145U (en) | Device for detecting partial discharge of terminal of on-site power cable | |
| CN202735412U (en) | On-line measurement device for capacitive current of power grid with neutral point grounded through arc suppression coil | |
| CN202383244U (en) | Partial discharge detection device of gas insulated switchgear |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120314 Termination date: 20120630 |