CN1955749A - Broad band uhf local discharge signal and graphics generator - Google Patents
Broad band uhf local discharge signal and graphics generator Download PDFInfo
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- CN1955749A CN1955749A CNA200610127424XA CN200610127424A CN1955749A CN 1955749 A CN1955749 A CN 1955749A CN A200610127424X A CNA200610127424X A CN A200610127424XA CN 200610127424 A CN200610127424 A CN 200610127424A CN 1955749 A CN1955749 A CN 1955749A
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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
- G01R31/14—Circuits therefor, e.g. for generating test voltages, sensing circuits
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Abstract
The invention discloses a broad band UHF local discharge signal and graphics generator. The generator comprises: a commercial power phase synchronization sensor which is connected to an inductive power phase synchronization sensor, a capacitive phase synchronization sensor, and a power phase synchronization sensor used for sensing light quantity radiated from an electrical lamp; a rectangle pulse generator connected to the commercial power synchronization sensor and designed for inputting and controlling patterns; a pulse type controller designed for reducing the rise time and the fall time of the pulse; a capacitor designed for removing DC component of a signal controlled by the pulse type controller to reduce the the rise time and the fall time of the pulse; a high pass filter designed for filtering the high frequency of AC component of the signal to generate UHF; a signal amplifier and attenuator designed for outputting a signal which has a size set by the rectangle pulse generator; and a directional coupler designed for measuring the size of the signal outputted from the signal amplifier and attenuator.
Description
The cross reference of related application
This non-provisional application requires the right of priority of the patented claim submitted in Korea S on October 26th, 2005 10-2005-101192 number, quotes its full content with for referencial use at this.
Technical field
The present invention relates to a kind of high-voltage power equipment, particularly relate to a kind of broadband UHF (UHF) local discharge signal and pattern generator, it can be by being connected to sensor or simulate signal and pattern generator surveying instrument rather than being connected to sensitivity and the performance test that the high-voltage partial discharge generator carries out surveying instrument, can carry out the measurement test of UHF shelf depreciation by the shelf depreciation figure that uses storage or carry out the defect type judgement test of supervisory system, and can during the manufacturing process of surveying instrument, easily be used for test.
Background technology
Shelf depreciation occurs in as the mechanical fault signal in the high-voltage power equipment of for example gas-insulated switchgear (GIS), gas-insulated transformer, oil-immersed type transformer, gas-insulated transmission line, power cable and slewing (rotarydevice).Similarly, if shelf depreciation occurs in the high-voltage power equipment, the ultrahigh frequency (UHF) that UHF measurement of partial discharge apparatus measures produces with shelf depreciation, whether the signal type of the UHF of analysis to measure and figure and diagnosis shelf depreciation take place and whether power apparatus demotes, thereby can measure or discern the fault of power apparatus in advance.
Up to now, by using true shelf depreciation generator or fine measuring instrument, the UHF partial-discharge measuring device has carried out for example call through test of the test during manufacturing process, operational testing after manufacturing process is finished and correction test, and the cause inferred of shelf depreciation.
Fig. 1 shows the traditional true shelf depreciation generator and the structural map of UHF measurement of partial discharge instrument.
With reference to Fig. 1, if for example all be applied with high-voltage power equipment 110 internal faults of GIS, transformer, slewing, transmission line and the cable of high pressure AC power 100, shelf depreciation then takes place as fault-signal in high-voltage power equipment 110.
At this moment, UHF measurement of partial discharge instrument 140 receives the local discharge signal 150 that is detected by the local discharge sensor 120 that is installed in the high-voltage power equipment 110 via coaxial transmission line 130, to measure and to analyze the local discharge signal 150 that receives.Similarly, the local discharge signal 150 via coaxial transmission line 130 inputs is to have the broadband signal of duration dozens of nanosecond.
When by continuous long-time the measurement, local discharge signal 150 is according to the phase place that applies voltage and periodically or brokenly produce, and thereby special local discharge signal figure 210 occurs according to as shown in Figure 2 defect type.
If signal graph 220 is exaggerated a period of time,, can observe the partial discharge pulse's signal 230 that takes place during hundreds of nanoseconds tens of for the phase place that applies voltage of special local discharge signal figure 210.Partial discharge pulse's signal 230 is broadband UHF signals that the hundreds of MHz in frequency domain 240 arrive several GHz after Fourier transform.
The neural network that signal acquisition circuit in the UHF measurement of partial discharge instrument 140 comprises dissimilar amplifiers, signal attenuator, pick-up unit and is used for the signal classification, thus allow to analyze this local discharge signal 150.
By analyzing the shape of local discharge signal 150, can diagnose the degradation mode whether shelf depreciation and high-voltage power equipment 110 take place, and can measure or discern the fault-signal in the high-voltage power equipment 110 in advance based on diagnosis.
Similarly, test in order to use UHF measurement of partial discharge instrument 140 according to classic method, thereby shelf depreciation generator 160 is installed in the high-voltage power equipment 110 and can produces the UHF shelf depreciation by applying high-voltage power 100.
The test that use is installed in the UHF measurement of partial discharge instrument of available devices inside almost is impossible, and this is that surveying instrument just can be tested because only when local electrical discharge generator is installed in the available devices.
For the measurement of true shelf depreciation generator, need to install local discharge sensor 120 and large scale high pressure generator.
Simultaneously, the test that combination that can be by using two or more precision high-frequency surveying instruments rather than true shelf depreciation generator use UHF measurement of partial discharge instrument 140.
Similarly, the precision high-frequency surveying instrument volume that is used to test UHF measurement of partial discharge instrument 140 is big and expensive, and this is because will connect different surveying instruments to be operated by special controller.
Traditionally, use high frequency signal generator, pulse producer and the spectrum analyzer of integrated manipulator control to be connected one to the other to together separately.Therefore, only can test UHF measurement of partial discharge instrument 140 by using integrated manipulator.
So,, need different high price surveying instruments in order to test the performance of UHF measurement of partial discharge instrument 140.Therefore, test performance is very difficult in the outdoor place of installation and operating means.
In addition, in order to carry out the performance test and the checking of UHF measurement of partial discharge instrument 140, need a large amount of time and expense.
Summary of the invention
Therefore, made the present invention to solve the above-mentioned problems in the prior art, and the purpose of this invention is to provide a kind of broad band uhf local discharge signal and pattern generator, it can be by being connected to sensor or simulate signal and pattern generator the input port of surveying instrument rather than being connected to sensitivity and the performance test that the high-voltage partial discharge generator carries out surveying instrument, can carry out the measurement test of UHF shelf depreciation by the shelf depreciation figure that uses storage or carry out the defect type judgement test of supervisory system, and can during the manufacturing process of surveying instrument, easily be used for test.
Another object of the present invention provides a kind of broad band uhf local discharge signal and pattern generator, it can be by producing for example signal of broadband local discharge signal and operation inspection, test or the correction that signal graph carries out UHF measurement of partial discharge instrument, described broadband local discharge signal is when manufacturing, test, installation and maintenance UHF measurement of partial discharge instrument, by sensor and be input to the input port of surveying instrument.
Another purpose of the present invention provides a kind of broad band uhf local discharge signal and pattern generator, it can be used to produce and be applied to the phase-locking of voltage of high-voltage partial discharge generator or the function of nonsynchronous signal graph and the fundamental measurement function (that is sensitivity) of UHF measurement of partial discharge instrument by use and test the signal analysis function of online or off-line system.
A further object of the present invention provides a kind of broad band uhf local discharge signal and pattern generator, it can be in the wide band detection performance from 300 to 3000MHz scope build-in test UHF measurement of partial discharge instrument, and the operation of checking total system and discharge figure.
Another purpose of the present invention provides a kind of broad band uhf local discharge signal and pattern generator, and it can be simple and easy portable and small size, and thereby can be in the work place or the performance of factory's correcting measuring instrument and confirmatory measurement instrument.
Other advantages of the present invention, purpose and feature will be described in the following description, and for becoming obviously after those of ordinary skills' consulting below, perhaps can understand from the practice of the present invention.
In one aspect of the invention, a kind of broad band uhf local discharge signal and pattern generator are provided, and it comprises: be connected to induced power phase-locking sensor, electric capacity power phases synchro pick-up and be used for the commercial power phases synchro pick-up of sensing from the power phases synchro pick-up of the light quantity of electric light irradiation; Be connected to commercial power synchro pick-up and be used to import and control the micropulser of figure; Be used to reduce the pulse pattern controller of the rise time and the fall time of pulse; Be used to remove direct current (DC) component of the signal of controlling by the pulse pattern controller so that the capacitor that rises and shorten fall time; The high fdrequency component of interchange (AC) that is used for trap signal is to produce the Hi-pass filter of UHF; The signal that is used to export the signal with size of being set by micropulser amplifies and attenuator; And be used to measure from signal and amplify and the directional coupler of the signal magnitude that attenuator is exported.
Description of drawings
Following detailed description above-mentioned and that other purposes, feature and advantage reference combine with accompanying drawing of the present invention will become more obvious, wherein:
Fig. 1 shows the traditional true shelf depreciation generator and the structural map of UHF measurement of partial discharge instrument;
Fig. 2 shows after being measured by traditional local discharge sensor and is input to the signal of UHF measurement of partial discharge instrument and the synoptic diagram of figure thereof;
Fig. 3 shows according to the broad band uhf local discharge signal of exemplary embodiment of the invention and the structural map of pattern generator;
Fig. 4 shows according to the example of exemplary embodiment of the invention from the signal of broad band uhf local discharge signal and pattern generator output; And
Fig. 5 shows according to the example of exemplary embodiment of the invention from the signal graph of broad band uhf local discharge signal and pattern generator output.
Embodiment
By with reference to the embodiment of describing in detail about accompanying drawing, many aspects of the present invention and feature and be used to realize that the method for this aspect and feature will become obvious.Yet the present invention is not limited to the embodiment of following discloses, and can be by multi-form enforcement.The things that limits in instructions of for example detailed structure and element only is to be provided with helping those of ordinary skills comprehensively to understand detail of the present invention, and only limits the present invention within the scope of the appended claims.In whole instructions of the present invention, identical Reference numeral is used to represent components identical in different accompanying drawings.
Describe preferred implementation of the present invention in detail hereinafter with reference to accompanying drawing.
Fig. 3 shows according to the broad band uhf local discharge signal of exemplary embodiment of the invention and the structural map of pattern generator.
With reference to Fig. 3, broad band uhf local discharge signal and pattern generator comprise and are connected to induced power phase-locking sensor 381, electric capacity power phases synchro pick-up 382 and be used for the commercial power phases synchro pick-up 380 of sensing from the power phases synchro pick-up of the light quantity of lamp 383 irradiation, be connected to commercial power phases synchro pick-up 380 and be used to import and control the micropulser 310 of figure, be used to reduce the pulse pattern controller 320 of the rise time and the fall time of pulse, be used to remove direct current (DC) component of the signal of controlling by pulse pattern controller 320 321 so that the capacitor 330 that rises and shorten fall time, the high frequency of interchange (AC) component that is used for trap signal is to produce the Hi-pass filter 340 of UHF, the signal that is used to export the signal 361 with size of being set by micropulser 310 amplifies and attenuator 350, and is used to measure from signal and amplifies and the directional coupler 360 of the size of the signal 361 that attenuator 350 is exported.
To illustrate below according to the broad band uhf local discharge signal of exemplary embodiment of the invention and the operation of pattern generator.
If will be provided to partial-discharge measuring device via coaxial transmission line 130 with signal, then not need the power apparatus 110 shown in Fig. 1, shelf depreciation generator 160 and high-voltage power 100 by the signal similar that is installed in the sensor measurement in the power apparatus.
Micropulser 310 produces pulse signal 311 and is provided to pulse pattern controller 320 with the pulse signal that will produce.
Pulse pattern controller 320 is carried out control so that rise and shorten fall time, thus generation signal 321.The DC component of signal 321 is removed by capacitor 330 time.Only there are interchange 331 components of signal 321 to be provided to Hi-pass filter 340.
Exchange 331 and pass through Hi-pass filter 340 to form UHF band signal 341.The UHF band signal 341 that forms is provided to signal to be amplified and attenuator 350.Fig. 4 shows the local signal 420 of UHF band signal 341.
Signal amplifies and attenuator 350 outputs have through the signal 361 of directional coupler 360 by the size of micropulser 310 settings.
Amplify and the size of the signal 361 that attenuator 350 is exported is measured by directional coupler 360 and is transfused to and gets back to micropulser 310 from signal.
Micropulser 310 uses control signals 312 control signals to amplify with attenuator 350 so that output signal 361 has and by the identical size of micropulser 310 settings.
The signal storage that is produced by specific defects is in storer 390.If desired, the user selects this signal to be input to micropulser 310 with the signal that will select.Micropulser 310 is exported the signal of input as signal graph 510.
For will be synchronous from the power phases of cycle of the feedback signal 351 of directed coupling mechanism 360 and phase place and UHF measurement of partial discharge instrument 140, micropulser 310 be gone into business with power synchro pick-up 380 or power supply receiving phase signal.
Fig. 4 shows according to the example of the signal graph 510 that is input to micropulser 310 from storer 390 by the signal 420 of pulsed modulation 410 outputs.If one-period is amplified in one of several pulses in time domain, then can observe the tens of signals 430 of maintenance to hundreds of nanoseconds.If observed signal 430 in frequency domain 440 after carrying out Fourier transform, then signal 430 is the broad band uhf signal of scope from hundreds of MHz to several GHz.
Fig. 5 shows from the example of some shelf depreciation simulate signals of broad band uhf signal graph generator output shown in Figure 3.
Be stored in local discharge signal figure in the storer 390 and can use the data or the artificial data of measurement.Data type dissimilates according to defective 530,540,550 and 560, thereby causes shelf depreciation.The local signal 520 of shelf depreciation simulate signal 510 has pulse waveform.
As mentioned above, owing to produced the signal and the figure thereof that for example pass through the broad band uhf local discharge signal of UHF local discharge sensor measurement, the present invention is by being connected to simulate signal and pattern generator the sensor of all UHF measurement of partial discharge instruments rather than being connected to the high-voltage partial discharge generator, can be used for the test during device manufacturing process, the performance test in its installation and operational testing.Specifically, can make simulate signal and pattern generator to operate by battery and thereby can use according to small size in the work place.
Has following effect according to broad band uhf local discharge signal of the present invention and pattern generator.
Simulate signal and pattern generator are connected to surveying instrument or sensor rather than are connected to the high-voltage partial discharge generator, thereby carry out the sensitivity test or the performance test of surveying instrument, use the shelf depreciation figure of storage and carry out the defect type judgement test of UHF measurement of partial discharge or supervisory system, and during the manufacturing process of surveying instrument, easily used in test.
Described preferred implementation of the present invention for purpose of explanation, and it will be appreciated by those skilled in the art that and under the situation that does not depart from disclosed scope and spirit of the present invention in the claims, can make different modification, interpolation and replacement.Therefore, scope of the present invention should be limited by claims and legal equivalents thereof.
Claims (4)
1, a kind of broadband UHF local discharge signal and pattern generator comprise:
Be connected to induced power phase-locking sensor, electric capacity phase-locking sensor and be used for the commercial power phases synchro pick-up of sensing from the power phases synchro pick-up of the light quantity of electric light irradiation;
Be connected to commercial power synchro pick-up and be designed for input and the micropulser of control figure;
Be designed for the rising of minimizing pulse and the pulse pattern controller of fall time;
Be designed for removal by the DC component of the signal of pulse pattern controller control so that the capacitor that shortens the rising of pulse and fall time;
The high frequency of AC compounent that is designed for trap signal is to produce the Hi-pass filter of ultrahigh frequency;
Be designed for signal amplification and attenuator that output has the signal of the size of being set by micropulser; And
Be designed for the directional coupler of measurement from the size of the signal of signal amplification and attenuator output.
2, broadband UHF local discharge signal according to claim 1 and pattern generator is characterized in that, described micropulser produces the broadband UHF pulse that has in tens of length in hundreds of nano-seconds.
3, broadband UHF local discharge signal according to claim 1 and pattern generator, it is characterized in that, by carrying out pulse-length modulation and produce from signal generator and produce and the figure of the signal of output from be stored in typical defect figure the storer by user input.
4, broadband UHF local discharge signal according to claim 1 and pattern generator, it is characterized in that, by will be for example the source power supply frequency internal clocking or by the input of the electric field of source power supply induction and static and induction coupling sensor or be used for the signal Synchronization of the optical signalling sensor that sensing changes from the light quantity of electric light irradiation, produce the signal and the signal graph that have according to the phasing degree variable function of the signal that produces and export from signal generator.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020050101192A KR100729068B1 (en) | 2005-10-26 | 2005-10-26 | Ultra-high Frequency wideband simulated partial discharge signal and pattern generator simulator |
| KR1020050101192 | 2005-10-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1955749A true CN1955749A (en) | 2007-05-02 |
| CN100554983C CN100554983C (en) | 2009-10-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200610127424XA Expired - Fee Related CN100554983C (en) | 2005-10-26 | 2006-09-13 | Broadband UHF local discharge signal and pattern generator |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR100729068B1 (en) |
| CN (1) | CN100554983C (en) |
| DE (1) | DE102006043120B4 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101852836A (en) * | 2010-05-05 | 2010-10-06 | 华北电力大学 | System of detecting partial discharge in equipment |
| CN101953079B (en) * | 2008-02-13 | 2013-05-22 | 温科·昆茨 | Method and circuit for a fast reduction in voltage of a DC component and low-frequency components at a mixing circuit output in a receiver of a UHF transceiver |
| CN104849685A (en) * | 2015-04-27 | 2015-08-19 | 上海交通大学 | Partial discharge detector performance evaluation method |
| CN104977555A (en) * | 2015-06-25 | 2015-10-14 | 云南电网有限责任公司电力科学研究院 | Direct injection controllable pulse source partial discharge meter test system and test method thereof |
| CN105044640A (en) * | 2015-06-27 | 2015-11-11 | 云南电网有限责任公司电力科学研究院 | Integrated controllable partial discharge instrument pulse signal generator |
| CN105210088A (en) * | 2013-05-10 | 2015-12-30 | 普睿司曼股份公司 | Partial discharge signal processing method and apparatus employing neural network |
| CN107067859A (en) * | 2017-02-14 | 2017-08-18 | 吴笃贵 | Partial Discharge Detection stimulating and training system |
| CN110729986A (en) * | 2019-09-10 | 2020-01-24 | 广州供电局有限公司 | Impulse voltage generator and trigger pulse waveform regulating and controlling device thereof |
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| DE102009048477A1 (en) * | 2009-10-07 | 2011-04-14 | Hella Kgaa Hueck & Co. | Method for detecting and locating electro-static discharges, particularly in electronic component, involves evaluating electro-static discharge as impulse in monitoring area, where impulse is detected in detection area |
| ES2400139B1 (en) * | 2011-06-21 | 2013-11-26 | Ormazabal Corporate Technology, A.I.E. | PROCEDURE AND DEVICE FOR MONITORING PARTIAL DOWNLOADS |
| CN102778640B (en) * | 2012-07-13 | 2014-12-17 | 深圳供电局有限公司 | Portable multifunctional earth electric wave signal generator |
| CN104849686B (en) * | 2015-04-27 | 2017-10-31 | 上海交通大学 | Partial discharge detector's performance evaluation system |
| CN105004973B (en) * | 2015-07-10 | 2018-05-25 | 陕西省地方电力（集团）有限公司 | Double-end measurement aerial insulated wire shelf depreciation alignment system and method |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD286090A7 (en) * | 1988-09-12 | 1991-01-17 | Veb Robotron-Messelektronik "Otto Schoen" Dresden,De | charge injector |
| KR950001434B1 (en) * | 1992-07-03 | 1995-02-24 | 현대전자산업주식회사 | Edge detector and pulse generator of digital signal |
| DE19647686C2 (en) * | 1996-11-07 | 2001-02-15 | Siemens Ag | Device and method for generating an electromagnetic test signal sequence for a partial discharge measuring device |
| KR100208766B1 (en) * | 1997-02-27 | 1999-07-15 | 윤종용 | High voltage generation circuit |
| DE19758085A1 (en) * | 1997-12-30 | 1999-07-01 | Hossein Prof Dr Ing Borsi | Digital generating of calibration pulses with superimposed current |
| KR100702571B1 (en) * | 2004-03-31 | 2007-04-04 | 국방과학연구소 | Circuit for outputting laser for measuring distance using laser |
-
2005
- 2005-10-26 KR KR1020050101192A patent/KR100729068B1/en active IP Right Grant
-
2006
- 2006-09-08 DE DE102006043120.0A patent/DE102006043120B4/en not_active Expired - Fee Related
- 2006-09-13 CN CNB200610127424XA patent/CN100554983C/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101953079B (en) * | 2008-02-13 | 2013-05-22 | 温科·昆茨 | Method and circuit for a fast reduction in voltage of a DC component and low-frequency components at a mixing circuit output in a receiver of a UHF transceiver |
| CN101852836B (en) * | 2010-05-05 | 2012-07-25 | 华北电力大学 | System of detecting partial discharge in equipment |
| CN101852836A (en) * | 2010-05-05 | 2010-10-06 | 华北电力大学 | System of detecting partial discharge in equipment |
| CN105210088A (en) * | 2013-05-10 | 2015-12-30 | 普睿司曼股份公司 | Partial discharge signal processing method and apparatus employing neural network |
| CN105210088B (en) * | 2013-05-10 | 2018-07-13 | 普睿司曼股份公司 | Using the signal processing of partial discharge method and device of neural network |
| CN104849685A (en) * | 2015-04-27 | 2015-08-19 | 上海交通大学 | Partial discharge detector performance evaluation method |
| CN104849685B (en) * | 2015-04-27 | 2018-01-19 | 上海交通大学 | Partial discharge detector's performance estimating method |
| CN104977555B (en) * | 2015-06-25 | 2018-05-08 | 云南电网有限责任公司电力科学研究院 | A kind of test system and its test method for being directly injected into controllable pulse source PD meter |
| CN104977555A (en) * | 2015-06-25 | 2015-10-14 | 云南电网有限责任公司电力科学研究院 | Direct injection controllable pulse source partial discharge meter test system and test method thereof |
| CN105044640A (en) * | 2015-06-27 | 2015-11-11 | 云南电网有限责任公司电力科学研究院 | Integrated controllable partial discharge instrument pulse signal generator |
| CN105044640B (en) * | 2015-06-27 | 2018-11-02 | 云南电网有限责任公司电力科学研究院 | A kind of integrated form controllable local discharge instrument pulse signal generator |
| CN107067859A (en) * | 2017-02-14 | 2017-08-18 | 吴笃贵 | Partial Discharge Detection stimulating and training system |
| CN107067859B (en) * | 2017-02-14 | 2019-03-22 | 吴笃贵 | Partial Discharge Detection stimulating and training system |
| CN110729986A (en) * | 2019-09-10 | 2020-01-24 | 广州供电局有限公司 | Impulse voltage generator and trigger pulse waveform regulating and controlling device thereof |
| CN110729986B (en) * | 2019-09-10 | 2023-08-08 | 广东电网有限责任公司广州供电局 | Impulse voltage generator and trigger pulse waveform regulating and controlling device thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100554983C (en) | 2009-10-28 |
| DE102006043120B4 (en) | 2016-12-29 |
| KR100729068B1 (en) | 2007-06-14 |
| DE102006043120A1 (en) | 2007-05-10 |
| KR20070044903A (en) | 2007-05-02 |
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