CN102866377B - The detection check system and method for the online monitoring assembly of transformer partial discharge and location - Google Patents

The detection check system and method for the online monitoring assembly of transformer partial discharge and location Download PDF

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Publication number
CN102866377B
CN102866377B CN201210342510.8A CN201210342510A CN102866377B CN 102866377 B CN102866377 B CN 102866377B CN 201210342510 A CN201210342510 A CN 201210342510A CN 102866377 B CN102866377 B CN 102866377B
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transformer
partial discharge
uhf sensor
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electrode
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CN102866377A (en
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陈江波
李辉
张曦
许晶
邱进
徐思恩
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State Grid Corp of China SGCC
China Electric Power Research Institute Co Ltd
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State Grid Corp of China SGCC
China Electric Power Research Institute Co Ltd
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Abstract

The invention provides the detection check system and method for the online monitoring assembly of a kind of transformer partial discharge and location, described detection check system comprises power supply, isolation filter transformer, puts step-up transformer, voltage divider, test product Cx, digital partial discharge instrument, type UHF sensor and computer without office.Can realize putting Chao Shengdingwei UHF to the drawn game of transformer partial discharge UHF on-line monitoring assembly by detection check system to locate online monitoring assembly and detect and verify, can the sensitivity of on-line monitoring assembly and positioning error be detected and be verified simultaneously.The type UHF sensor mounting tool simultaneously developed can realize the detection of polymorphic type type UHF sensor; By development electrode model can analogue transformer typical case partial discharges fault, carry out the detection check of on-line monitoring intelligent assembly to all kinds of typical fault monitoring sensitivity.

Description

The detection check system and method for the online monitoring assembly of transformer partial discharge and location
Technical field
The invention belongs to intelligent electric appliance field, be specifically related to the detection check system and method for the online monitoring assembly of a kind of transformer partial discharge and location.
Background technology
Along with the sharp increase of China's power consumption, the performance of electricity consumption imbalance problem is particularly outstanding, east and coastally face electricity consumption problem in short supply, western large water power and the large coal-electricity base of the Shan Gan Ningmengjin wing, country carries out transferring electricity from the west to the east, three magnificent Power System Interconnections, the strong intelligent grid of development extra-high voltage.The basis that electrical network has become industrialization, informationized society develops and important component part; Meanwhile, electrical network is also constantly receiving industrialization, information-based achievement, makes various advanced technology obtain Integrated predict model in power transmission and transformation primary equipment, the intelligence degree of the primary equipments such as significant increase transformer.
Transformer is as one of most important power equipment, and the stability of its safe operation is particularly important.Informationization, robotization, interactive technology are applied to transformer equipment by intelligent transformer assembly, can carry out on-line monitoring to the major parameter of transformer, can carry out state estimation and fault diagnosis by the data of on-line monitoring to transformer.Transformer insulated parameter is one of most important parameters of transformer safety operation, when there are some weakness when insulating, can discharge under certain applied voltage, but whole insulation penetrability does not occur immediately puncturing, the electric discharge that these insulation local locations occur is shelf depreciation, and abbreviation office puts.With generation position by office's size high-volume can examine the state of insulation of transformer in advance and assess; Therefore, office is high-volume one of most important parameter in transformer insulated assessment with partial discharge location.Traditional pulse current method can well the discharge capacity put of measuring transformer office, but needs power failure off-line to carry out testing inspection, can not assess the state of insulation of transformer in real time.At present, the major way that transformer online monitoring office puts is UHF(UltraHighFrequency, ultrahigh frequency) on-line monitoring and ultrasonicly add high frequency CT on-line monitoring, can assess transformer insulation state in real time.
The principle of transformer partial discharge UHF on-line monitoring: when transformer generation office puts, position radiated electromagnetic wave is towards periphery put in office, can carry out detection electromagnetic wave by type UHF sensor, the office catching transformer in time puts, and judges the running status of transformer by the development trend that value is put in office.
The ultrasonic principle adding high frequency CT on-line monitoring of partial discharge of transformer: when transformer generation office puts, office put position towards periphery radiative acoustic wave and, acoustic sensor array is formed by the layout of sonac by ultrasound positioning system, measure and put the sound wave that a little the sends relative time error to the ground wave travel-time of each probe or respectively popping one's head in by office, these times or relative time error are substituted into the equation solution meeting this acoustic sensor array geometric relationship, just the position coordinates of discharge source is obtained, and simultaneously by High Frequency Current Sensor from bushing and end shield ground wire, neutral ground line, the coupled discharge signals such as iron core grounding line, whether detection office puts and occurs.
Current, comparatively system, comprehensively solution are not also had for transformer partial discharge and location on-line monitoring verification, Chinese utility model patent " being convenient to the partial discharge monitoring locating device of installation and movement " (application number: 200920104422.8, the applying date: 2009-08-31) propose a kind of partial discharge monitoring locating device being convenient to installation and movement, for solving the installation question of monitoring positioning device.Its technical scheme is: it is by sonac, broadband current transformer, master control cabinet and be installed on the general supply of master control cabinet inside, PD meter, remote communication unit, sonac power supply unit forms, described sonac is fixed on the tank wall of monitored transformer, its signal output part connects PD meter, described broadband current transformer is arranged on power transformer iron core ground wire, its signal output part connects PD meter, described master control cabinet is by stainless steel cabinet, stainless steel cabinet door and cabinet pin composition, described cabinet pin by J-shaped bolt be arranged on ground iron double-edged fine-toothed comb and be connected.But this apparatus function is too single.
In view of this, the invention provides the detection check system and method for the online monitoring assembly of a kind of transformer partial discharge and location, to solve the problem.
Summary of the invention
The object of the invention is for the deficiencies in the prior art, the detection check system and method for the online monitoring assembly of a kind of transformer partial discharge and location is proposed, can realize putting Chao Shengdingwei UHF to the drawn game of transformer partial discharge UHF on-line monitoring assembly by detection check system to locate online monitoring assembly and detect and verify, can the sensitivity of on-line monitoring assembly and positioning error be detected and be verified simultaneously.The transformer partial discharge UHF on-line monitoring that substation field runs, its type UHF sensor mounting means is multiple, by the type UHF sensor that fuel outlet valve, hand hole, manhole flange Reconstruction in field are installed, also have the type UHF sensor OEM carried out on tank wall when transformer factory's assembling transformer to install, when detection check is carried out to the type UHF sensor of different mounting meanss, need dissimilar frock.
Technical scheme of the present invention is: the detection check system of the online monitoring assembly of a kind of transformer partial discharge and location, comprise 220V AC power, isolation filter transformer, put step-up transformer, voltage divider, test product Cx, digital partial discharge instrument, type UHF sensor and computer without office, it is characterized in that: described isolation filter transformer realizes the filtering to described 220V AC power harmonic wave, the interference of alternating current source is isolated simultaneously, avoid introducing detection check loop; Describedly put step-up transformer without office and realize the conversion of low pressure to high pressure, provide high pressure to described test product Cx, in this system, test product Cx is partial discharge of transformer failure simulation device; Voltage divider realizes high-tension real-time measurement; Digital partial discharge instrument adopts pulse current method to detect test product Cx discharge capacity pC, and detected the test product Cx radiated electromagnetic wave towards periphery that discharges by type UHF sensor, detected value is mV or dBm, and the waveform of detection record passes to computer and stores simultaneously.
The detection check system of the online monitoring assembly of transformer partial discharge as above and location, it is characterized in that, described test product Cx and partial discharge of transformer failure simulation device comprise bushing shell for transformer one, bushing shell for transformer two, electrode model and shell, described bushing shell for transformer one one end connects the described high-voltage connection putting step-up transformer without office, the other end is connected to electrode model, the other end of described electrode model is connected to bushing shell for transformer two, by bushing shell for transformer two ground connection again, the shell good earth of partial discharge of transformer failure simulation device.
The detection check system of the online monitoring assembly of transformer partial discharge as above and location, it is characterized in that, the mounting means of described type UHF sensor is multiple, comprises type UHF sensor and to drain the oil valve type frock and type UHF sensor OEM frock; Test product Cx shell is cube, and cubical four sides arrange a type UHF sensor respectively and to drain the oil valve type frock and a type UHF sensor OEM frock, and drain the oil valve type frock and type UHF sensor OEM frock diagonal angle of the type UHF sensor on same side is arranged.
Transformer partial discharge as above and location online monitoring assembly detection check system, it is characterized in that, described electrode model comprise needle plate electrode, ball plate electrode, suspension electrode, along one or more in face electrode, Air-gap electrode, plate electrode.
The detection check system of the online monitoring assembly of transformer partial discharge as above and location, is characterized in that, described test product Cx adopts nanosecond pulse power supply to be supplied to type UHF sensor one repeatably pulse signal.
The detection check system of the online monitoring assembly of transformer partial discharge as above and location, it is characterized in that, adopt described system to carry out transformer partial discharge Chao Shengdingwei UHF and locate the verification of online monitoring intelligent component detection, system also comprises further: sonac, localization by ultrasonic monitoring system, UHF positioning monitoring system; It is inner that the sparking electrode source of trouble and electrode model are preset at partial discharge of transformer failure simulation device, high voltage is applied by bushing shell for transformer one, the electrode model other end links ground wire by bushing shell for transformer two, and the quantity of sonac and type UHF sensor and position are selected according to actual conditions.
The present invention also provides the detection check method of the online monitoring assembly of a kind of transformer partial discharge and location, it is characterized in that, adopt the detection check system of the online monitoring assembly of transformer partial discharge as above and location, described method comprises the steps:
The first step: adopt discharging model to be used for analogue transformer partial discharges fault in oil tank of transformer inside, by pressure build-up test loop to electrode model pressurization electric discharge, produces partial discharges fault;
Second step: adopt nanosecond pulse power supply generator, artificial partial discharge pulse is injected to type UHF sensor one, electromagnetic wave is sent by type UHF sensor, spectrogram is received by oscillograph recording type UHF sensor two, and spectrogram is deposited into computer, the spectrogram recorded with type UHF sensor in the first step two is compared, and amplitude and the rise time of nanosecond pulse power supply generator is changed by adjustment, make spectrogram comparison error within ± 20%, the nanosecond pulse power supply now adjusted is as can reignition impulse source, and repetition frequency is booster system frequency;
Relation between the millimicrosecond pulse generator set up by above-mentioned test and partial discharge quantity, adopt the good millimicrosecond pulse generator of adjusted can repeat to produce the 5pC Apparent discharge magnitude supposed before this, for type UHF sensor of the same type to be detected or the sensor that has been arranged on on-the-spot transformer, this nanosecond pulse is injected one of them type UHF sensor of the same type, detected by another type UHF sensor of the same type, if spectrogram detected, illustrate that this sensor has the sensitivity technique ability of 5pC; 5pC Apparent discharge magnitude is assumed value, by sensing chamber to the adjustment of discharging model, can the office of making put Apparent discharge magnitude and reach lower, detect more highly sensitive type UHF sensor; By the setting of the type UHF sensor mounting tool of partial discharge of transformer failure simulation device, the detection check of number of different types sensor can be realized.
The detection check method of the online monitoring assembly of transformer partial discharge as above and location, it is characterized in that, partial discharge of transformer localization by ultrasonic on-line monitoring system intelligent assembly, the fuel tank of fault is put by analogue transformer office, carry out preset measurement to the position of trouble spot in fuel tank in advance, the office source of putting of fault is produced by a kind of electrode model; Localization by ultrasonic on-line monitoring system in intelligent assembly ultrasound probe position and number provided voluntarily by business to be checked and install, carry out point of discharge blind test, do error compare of analysis with preset position, can play a game and put localization by ultrasonic on-line monitoring intelligent assembly and carry out sensitivity and positioning error detection check.
The invention has the beneficial effects as follows: by the detection check system of the online monitoring assembly of transformer partial discharge and location, can realize testing verification to the error that localization by ultrasonic is put in the sensitivity drawn game of transformer partial discharge UHF on-line monitoring; The type UHF sensor mounting tool simultaneously developed can realize the detection of polymorphic type type UHF sensor; By development electrode model can analogue transformer typical case partial discharges fault, carry out the detection check of on-line monitoring intelligent assembly to all kinds of typical fault monitoring sensitivity.Have the following advantages in addition:
1) the type UHF sensor mounting tool developed can realize carrying out office to the disc type type UHF sensor of OEM mounting means and the rod-type type UHF sensor of fuel outlet valve mounting means and put sensitivity technique verification;
2) the multiple types electrode model developed can the multiple typical fault of analogue transformer shelf depreciation, various electrode model (discharging model is put in office) is placed on failure analog device of transformer inside, can carry out detection check on-line monitoring intelligent assembly to the monitoring of various fault and identification capability;
3) sensitivity detection method can detect the minimum sensitivity value of type UHF sensor in sensing chamber, and the artificial nanosecond pulse source simultaneously obtained by modulation can be used for calibration and the test loop debugging of the good UHF on-line monitoring system of in-site installation;
4) discharge electrode is placed on the diverse location in failure analog device of transformer interior three-dimensional space, carry out and error test is carried out to the location of ultrasound positioning system, UHF positioning system and actual discharge position, detect and the sensitivity (much offices high-volume can carry out detection and localization) of verification positioning system and positional accuracy.
Accompanying drawing explanation
Fig. 1 is the circuit theory schematic diagram of the detection check system of the online monitoring assembly of transformer partial discharge and location.
Fig. 2 is the structural drawing of partial discharge of transformer failure simulation device in Fig. 1 (that is: test product Cx) plane.
Fig. 3 is the structural drawing of the type UHF sensor mounting tool of partial discharge of transformer failure simulation device in Fig. 2.
Fig. 4 to Fig. 9 is the electrode model of transformer typical case partial discharges fault in Fig. 2, and wherein: Fig. 4 is needle plate electrode, Fig. 5 is ball plate electrode, and Fig. 6 is suspension electrode, and Fig. 7 is along face electrode, and Fig. 8 is Air-gap electrode, and Fig. 9 is plate electrode.
Figure 10 is that nanosecond pulse power supply injects and the schematic diagram detected.
Figure 11 is the Chao Shengdingwei UHF positioning principle figure of the detection check system of the online monitoring assembly of transformer partial discharge and location.
Embodiment
In order to understand the present invention better, illustrate content of the present invention further below in conjunction with embodiment, but content of the present invention is not only confined to the following examples.Those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values are equally within claims limited range listed by the application.
Description of symbols in accompanying drawing: Fig. 1: 1-220V AC power, 2-isolation filter transformer, 3-put step-up transformer, 4-discharge prevention resistance, 5-voltage divider, 6-coupling capacitance Ck, 7-test product Cx, 8-digital partial discharge instrument, 9-UHF sensor, 10-oscillograph, 11-computer without office.
The installation of Fig. 2: 21-bushing shell for transformer 1,22-bushing shell for transformer 2,23-type UHF sensor fuel outlet valve, 24-type UHF sensor OEM installation, 25-electrode model, 26-tank envelope.
Fig. 3: 1#-4#UHF sensor fuel outlet valve frock, 1#-4#UHF sensor OEM frock, 5-UHF sensors topside frock.
Fig. 4-Fig. 9: 41-high-field electrode, 42-insulating board, 43-ground-electrode, 44-suspended metal, 45-inherent vice, 46-parallel clearance.
Figure 10: 101-nanosecond pulse power supply.
Figure 11: 111-sparking electrode source of trouble preset position (coordinate can be measured), 112-electrode model (needle plate electrode), 113-bushing, 114-bushing, 115-sonac, 116-localization by ultrasonic monitoring system, 117-UHF positioning monitoring system.
The circuit theory schematic diagram of the detection check system of the online monitoring assembly of the transformer partial discharge that the embodiment of the present invention provides and location as shown in Figure 1.Described detection check system comprises 220V AC power 1, isolation filter transformer 2, puts step-up transformer 3, discharge prevention resistance 4, voltage divider 5, coupling capacitance Ck6, test product Cx7, digital partial discharge instrument 8, type UHF sensor 9, oscillograph 10 and computer 11 without office.
Isolation filter transformer 2 realizes the filtering to supply harmonic, the interference of 220V mains side is isolated simultaneously, avoid introducing detection check loop, put step-up transformer 3 without office and realize the conversion of low pressure to high pressure, high pressure is provided to test product Cx, in this detection check loop, test product Cx is partial discharge of transformer failure simulation device, voltage divider 5 realizes high-tension real-time measurement, digital partial discharge instrument 8 adopts pulse current method to detect test product Cx discharge capacity (pC), simultaneously by type UHF sensor 9 couples of test product Cx discharge towards periphery radiated electromagnetic wave detect, detected value is mV or dBm, the waveform of detection record is passed to computer 11 store.
Fig. 2 partial discharge of transformer failure simulation device (test product Cx) planimetric map, Fig. 2 is illustrating the test product Cx of Fig. 1.Bushing shell for transformer 1 one end connects the high-voltage connection putting boosting change without office, and bushing shell for transformer 1 other end is connected to electrode model 25, and the other end of electrode model 25 is connected to bushing shell for transformer 2, by bushing shell for transformer 2 ground connection again.The shell good earth of partial discharge of transformer failure simulation device.
The type UHF sensor frock position assumption diagram of Fig. 3 partial discharge of transformer failure simulation device (test product Cx), type UHF sensor OEM frock is the detection frock of disc type or circular cone type type UHF sensor installation site, and namely analogue transformer producer OEM installs type UHF sensor mode.Type UHF sensor fuel outlet valve frock is the detection frock of rod-type type UHF sensor installation site, and namely analogue transformer runs on-the-spot by fuel outlet valve improvement and installation type UHF sensor mode.The position of type UHF sensor may be installed in simulated field transformer surrounding and top simultaneously.In the present embodiment, as shown in Figure 3, test product Cx shell is cube, and cubical four sides arrange a type UHF sensor respectively and to drain the oil valve type frock and a type UHF sensor OEM frock, and drain the oil valve type frock and type UHF sensor OEM frock diagonal angle of the type UHF sensor on same side is arranged.
Fig. 4 to Fig. 9 is the electrode model of transformer typical discharges fault, described electrode model comprise needle plate electrode, ball plate electrode, suspension electrode, along one or more in face electrode, Air-gap electrode, plate electrode.Electrode model can analogue transformer typical fault, as: floating potential discharge in needle plate electric discharge in oil, paper oil insulation electric discharge, oil, insulating board is creepage along face, bubble in oil electric discharge, insulating board defect etc.; By sleeve pipe, high-voltage power supply is linked one end of electrode model, the other end ground connection of electrode model, go out current situation high-volume when voltage is added to certain firing potential.
Figure 10 is that nanosecond pulse power supply injects and the schematic diagram detected.Nanosecond pulse power supply 101 is supplied to type UHF sensor one repeatably pulse signal, and this impulse ejection is gone out by type UHF sensor, the electromagnetic field launched to surrounding of simulation shelf depreciation, pulse the method for seeing below is specifically set.The parameter request of nanosecond pulse power supply: 1) rise time is less than 1ns; 2) the half-wave time to peak of two exponential wave is greater than 20ns; 3) repetition period: being less than 100kHz can use, recommendation 50 or 60Hz.4) amplitude: 0 ~ 60V continuously adjustabe; 5) output impedance: 50 Ω.
Figure 11 be transformer partial discharge localization by ultrasonic UHF location schematic diagram.The sparking electrode source of trouble is preset at the diverse location in failure analog device of transformer interior three-dimensional space, and diverse location is by three-dimensional coordinate actual measurement.Discharging model is chosen to be needle plate electrode, be put into failure simulation device inside in advance, apply high voltage by bushing 113, the electrode model other end links ground wire by bushing 114, and quantity and the position of sonac 115/UHF sensor 9 can be selected by producer.Sensor is connected to positioning system by feeder line.Carry out and error test is carried out to the location of ultrasound positioning system, UHF positioning system and actual discharge position, detect and the sensitivity (much offices high-volume can carry out detection and localization) of verification positioning system and positional accuracy.
Adopt the detection check method of the detection check system of the online monitoring assembly of transformer partial discharge provided by the invention and location, its step is as follows:
The first step: adopt discharging model to be used for analogue transformer partial discharges fault in oil tank of transformer inside, by pressure build-up test loop to electrode model pressurization electric discharge, produces partial discharges fault.Due to different faults type, dissimilar sensor, diverse location, the spectrogram that UHF measures all is impacted; Therefore, while carrying out the work of type UHF sensor detection check, need clear and definite three kinds of variablees as far as possible, usually a kind of discharge fault type (as: needle plate electric discharge) is got, same type sensor is compared (as: the rod-type sensor that the collar plate shape that built-in OEM installs, external bleed valves are installed), same position or near compare.
Transformer fault simulation platform can realize type UHF sensor and compare test in close positions, when partial discharges fault occurs, also has the type UHF sensor of settling in advance near fault.Such as: simulated failure source electrode modal position is close to 1#UHF sensor OEM frock place, because pulse current method is the method that uniquely can realize local discharge of electrical equipment quantitative measurment, the discharge capacity of this source of trouble measures Apparent discharge magnitude (being assumed to 5pC at this) by conventional pulse current method, simultaneously by the spectrogram that oscillograph recording 2#UHF sensor OEM frock place receives, by this spectrogram stored in computer.The arrangement of two type UHF sensor, is shown in Fig. 3.
Second step: adopt artificial nanosecond pulse power supply generator, artificial partial discharge pulse is injected to 1#UHF sensor, electromagnetic wave is sent by 1#UHF sensor, spectrogram is received by oscillograph recording 2#UHF sensor, and spectrogram is deposited into computer, compare with the spectrogram of 2#UHF sensor record in the first step, and amplitude and the rise time of nanosecond pulse power supply generator is changed by adjustment, make spectrogram comparison error within ± 20%, the nanosecond pulse power supply now adjusted is as can reignition impulse source, repetition frequency is booster system frequency (being generally 50Hz).
Relation between the millimicrosecond pulse generator set up by above-mentioned test and partial discharge quantity (pC), adopt the good millimicrosecond pulse generator of adjusted can repeat to produce the 5pC Apparent discharge magnitude supposed before this, for type UHF sensor of the same type to be detected or the sensor that has been arranged on on-the-spot transformer, this nanosecond pulse is injected one of them type UHF sensor of the same type, detected by another type UHF sensor of the same type, if spectrogram detected, illustrate that this sensor has the sensitivity technique ability of 5pC.5pC Apparent discharge magnitude is assumed value, by sensing chamber to the adjustment of discharging model, can the office of making put Apparent discharge magnitude and reach lower, detect more highly sensitive type UHF sensor.By the setting of the type UHF sensor mounting tool of partial discharge of transformer failure simulation device, the detection check of number of different types sensor (as: UHF rod-type fuel outlet valve sensor installation, UHF disc type OEM sensor installation) can be realized.
Sensitivity detection method can detect the minimum sensitivity value of type UHF sensor in sensing chamber, and the artificial nanosecond pulse source that repeats simultaneously obtained by sensing chamber's internal modulation can be used for the good type UHF sensor calibration of in-site installation and the debugging of test loop.When on-the-spot transformer partial discharge UHF on-line monitoring has a two or more sensor, realize the simulation to on-the-spot type UHF sensor mounting means and position by transformer fault simulation platform frock in sensing chamber, modulate the repeated nanosecond pulse source for scene type UHF sensor calibration of the same type.
This transformer fault simulation platform is by the difference of discharging model, apply voltage and produce shelf depreciation, measure the UHF spectrogram of different electric discharge type, experts database is set up after pattern recognition, for follow-up partial discharge of transformer fault type diagnosis provides identification comparison source, for identifying different insulative defect type.
Adopt detection check system of the present invention to carry out partial discharge of transformer UHF location, localization by ultrasonic detection check method be as follows:
Discharging model is placed on the diverse location in failure analog device of transformer interior three-dimensional space, carry out and error test is carried out to the location of ultrasound positioning system, UHF positioning system and actual discharge position, detect and the sensitivity (much offices high-volume can carry out detection and localization) of verification positioning system and positional accuracy.
Partial discharge of transformer UHF is positioned at Xian Jiancexitong intelligent assembly, and reasonable Arrangement type UHF sensor arrives sensor mistiming by measuring electromagnetic wave accurately locates Partial Discharge Sources.Transformer fault simulation platform can realize the verification of type UHF sensor detection and localization, the calibration of partial discharge of transformer UHF mode positioning system, by the setting of the type UHF sensor mounting tool position of partial discharge of transformer failure simulation device, the Installation And Test of multiple number of different types type UHF sensor can be realized, simultaneously by carrying out point of discharge blind test, do error compare of analysis with preset position, can play a game and put UHF and locate online monitoring intelligent assembly and carry out sensitivity and positioning error detection check.
Partial discharge of transformer localization by ultrasonic on-line monitoring system intelligent assembly, the fuel tank of fault is put by analogue transformer office, carry out preset measurement to the position of trouble spot in fuel tank in advance, the office source of putting of fault is produced (as: needle plate electrode model) by a kind of electrode model.Localization by ultrasonic on-line monitoring system in intelligent assembly ultrasound probe position and number provided voluntarily by business to be checked and install, carry out point of discharge blind test, do error compare of analysis with preset position, can play a game and put localization by ultrasonic on-line monitoring intelligent assembly and carry out sensitivity and positioning error detection check.
The content be not described in detail in this instructions belongs to the known prior art of professional and technical personnel in the field.

Claims (6)

1. the detection check system of the online monitoring assembly of a transformer partial discharge and location, comprise 220V AC power, isolation filter transformer, put step-up transformer, voltage divider, test product Cx, digital partial discharge instrument, type UHF sensor and computer without office, it is characterized in that: described isolation filter transformer realizes the filtering to described 220V AC power harmonic wave, the interference of alternating current source is isolated simultaneously, avoid introducing detection check loop; Describedly put step-up transformer without office and realize the conversion of low pressure to high pressure, provide high pressure to described test product Cx, in this system, test product Cx is partial discharge of transformer failure simulation device; Voltage divider realizes high-tension real-time measurement; Digital partial discharge instrument adopts pulse current method to detect test product Cx discharge capacity pC, and detected the test product Cx radiated electromagnetic wave towards periphery that discharges by type UHF sensor, detected value is mV or dBm, and the waveform of detection record passes to computer and stores simultaneously;
Described test product Cx and partial discharge of transformer failure simulation device comprise bushing shell for transformer one, bushing shell for transformer two, electrode model and shell, described bushing shell for transformer one one end connects the described high-voltage connection putting step-up transformer without office, the other end is connected to electrode model, the other end of described electrode model is connected to bushing shell for transformer two, by bushing shell for transformer two ground connection again, the shell good earth of partial discharge of transformer failure simulation device;
The mounting means of described type UHF sensor is multiple, comprises type UHF sensor and to drain the oil valve type frock and type UHF sensor OEM frock; Test product Cx shell is cube, and cubical four sides arrange a type UHF sensor respectively and to drain the oil valve type frock and a type UHF sensor OEM frock, and drain the oil valve type frock and type UHF sensor OEM frock diagonal angle of the type UHF sensor on same side is arranged.
2. the detection check system of the online monitoring assembly of transformer partial discharge according to claim 1 and location, it is characterized in that, described electrode model comprise needle plate electrode, ball plate electrode, suspension electrode, along one or more in face electrode, Air-gap electrode, plate electrode.
3. the detection check system of the online monitoring assembly of transformer partial discharge according to claim 1 and location, is characterized in that, described test product Cx adopts nanosecond pulse power supply to be supplied to type UHF sensor one repeatably pulse signal.
4. the detection check system of the online monitoring assembly of transformer partial discharge according to claim 1 and location, it is characterized in that, adopt described system to carry out transformer partial discharge Chao Shengdingwei UHF and locate the verification of online monitoring intelligent component detection, system also comprises further: sonac, localization by ultrasonic monitoring system, UHF positioning monitoring system; It is inner that the sparking electrode source of trouble and electrode model are preset at partial discharge of transformer failure simulation device, high voltage is applied by bushing shell for transformer one, the electrode model other end links ground wire by bushing shell for transformer two, and the quantity of sonac and type UHF sensor and position are selected according to actual conditions.
5. a detection check method for the online monitoring assembly of transformer partial discharge and location, is characterized in that, adopt the detection check system of the online monitoring assembly of transformer partial discharge as above and location, described method comprises the steps:
The first step: adopt discharging model to be used for analogue transformer partial discharges fault in oil tank of transformer inside, by pressure build-up test loop to electrode model pressurization electric discharge, produce partial discharges fault, Apparent discharge magnitude is measured by conventional pulse current method, 5pC is assumed at this, simultaneously by the spectrogram that oscillograph recording type UHF sensor two receives, by this spectrogram stored in computer;
Second step: adopt nanosecond pulse power supply generator, artificial partial discharge pulse is injected to type UHF sensor one, electromagnetic wave is sent by type UHF sensor, by the spectrogram that oscillograph recording type UHF sensor two receives, and spectrogram is deposited into computer, the spectrogram recorded with type UHF sensor in the first step two is compared, and amplitude and the rise time of nanosecond pulse power supply generator is changed by adjustment, make spectrogram comparison error within ± 20%, the nanosecond pulse power supply now adjusted is as can reignition impulse source, and repetition frequency is booster system frequency;
Relation between the millimicrosecond pulse generator set up by above-mentioned test and partial discharge quantity, adopt the good millimicrosecond pulse generator of adjusted can repeat to produce the 5pC Apparent discharge magnitude supposed before this, for type UHF sensor of the same type to be detected or the sensor that has been arranged on on-the-spot transformer, this nanosecond pulse is injected one of them type UHF sensor of the same type, detected by another type UHF sensor of the same type, if spectrogram detected, illustrate that this sensor has the sensitivity technique ability of 5pC; 5pC Apparent discharge magnitude is assumed value, by sensing chamber to the adjustment of discharging model, can the office of making put Apparent discharge magnitude and reach lower, detect more highly sensitive type UHF sensor; By the setting of the type UHF sensor mounting tool of partial discharge of transformer failure simulation device, the detection check of number of different types sensor can be realized.
6. the detection check method of the online monitoring assembly of transformer partial discharge according to claim 5 and location, it is characterized in that, partial discharge of transformer localization by ultrasonic on-line monitoring system intelligent assembly, the fuel tank of fault is put by analogue transformer office, carry out preset measurement to the position of trouble spot in fuel tank in advance, the office source of putting of fault is produced by a kind of electrode model; Localization by ultrasonic on-line monitoring system in intelligent assembly ultrasound probe position and number provided voluntarily by business to be checked and install, carry out point of discharge blind test, do error compare of analysis with preset position, can play a game and put localization by ultrasonic on-line monitoring intelligent assembly and carry out sensitivity and positioning error detection check.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103176158B (en) * 2013-02-07 2016-01-20 广东电网公司电力科学研究院 The method of GIS partial discharge UHF detection check signal injection and device
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CN103323807B (en) * 2013-06-03 2015-09-09 杭州西湖电子研究所 A kind of method that high-frequency local discharging tester examination School Affairs value is demarcated
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CN110888030A (en) * 2019-11-26 2020-03-17 深圳供电局有限公司 Short air gap discharge identification circuit, method and system of transformer
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3728619A (en) * 1971-06-21 1973-04-17 Westinghouse Electric Corp Acoustical corona locator having rotatable and pivotable transducers
CN1484034A (en) * 2002-09-18 2004-03-24 新疆特变电工股份有限公司 On-line intelligent monitoring system for transformer and intelligent analysis diagnosis method thereof
CN101702002A (en) * 2009-12-07 2010-05-05 上海市电力公司 Local discharge electroacoustic united detection positioning system and positioning method thereof
CN101793939A (en) * 2009-09-18 2010-08-04 重庆大学 Partial discharge simulation experiment device of suspended metal particles in oil of transformer
CN203133263U (en) * 2012-09-17 2013-08-14 中国电力科学研究院 Detection and verification device of transformer partial discharge and positioning monitoring assembly

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0412717D0 (en) * 2004-06-08 2004-07-07 Sp Electric Ltd A method and a device for determining the location of a partial discharge (PD)

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3728619A (en) * 1971-06-21 1973-04-17 Westinghouse Electric Corp Acoustical corona locator having rotatable and pivotable transducers
CN1484034A (en) * 2002-09-18 2004-03-24 新疆特变电工股份有限公司 On-line intelligent monitoring system for transformer and intelligent analysis diagnosis method thereof
CN101793939A (en) * 2009-09-18 2010-08-04 重庆大学 Partial discharge simulation experiment device of suspended metal particles in oil of transformer
CN101702002A (en) * 2009-12-07 2010-05-05 上海市电力公司 Local discharge electroacoustic united detection positioning system and positioning method thereof
CN203133263U (en) * 2012-09-17 2013-08-14 中国电力科学研究院 Detection and verification device of transformer partial discharge and positioning monitoring assembly

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
Edward Gulski等."Digital Analysis of Partial Discharge".《IEEE Transactions on Dielectrics and Electrical Insulation》.1995,第2卷(第5期),第822-837页. *
Martin D.Judd等."Partial discharge monitoring of power transformers using UHF sensors. Part Ⅰ:sensors and signal interpretation".《Electrical Insulation Magazine,IEEE》.2005,第21卷(第2期),第5-14页. *
尤少华等."基于UHF检测的变压器内部典型放电试验的谱图分析".《华北电力大学学报》.2008,第35卷(第2期),第18-24页. *
汤明等."纳秒级高斯脉冲源的研制及其在GIS局部放电研究中的应用".《电网与水力发电进展》.2008,第24卷(第6期),第21-25页. *
董自胜."电力变压器局部放电超声波定位的研究".《华中科技大学硕士学位论文》.2012,第11-14、35页. *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI617108B (en) * 2016-12-08 2018-03-01 Judgment system for transformer operation status in power supply network
CN107390154A (en) * 2017-07-26 2017-11-24 国网上海市电力公司 System and method is verified in the sensitivity of partial discharge of transformer superfrequency detection means

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