CN105388406A - Gas insulated electric equipment partial discharge multi-source joint detection method - Google Patents

Gas insulated electric equipment partial discharge multi-source joint detection method Download PDF

Info

Publication number
CN105388406A
CN105388406A CN201511016379.6A CN201511016379A CN105388406A CN 105388406 A CN105388406 A CN 105388406A CN 201511016379 A CN201511016379 A CN 201511016379A CN 105388406 A CN105388406 A CN 105388406A
Authority
CN
China
Prior art keywords
gas
test
voltage
pressure
discharge
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.)
Granted
Application number
CN201511016379.6A
Other languages
Chinese (zh)
Other versions
CN105388406B (en
Inventor
唐炬
张晓星
曾福平
金淼
万凌云
姚强
苗玉龙
杜修明
逯遥
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Electric Power Research Institute of State Grid Chongqing Electric Power Co Ltd
Wuhan University WHU
State Grid Shandong Electric Power Co Ltd
Original Assignee
Electric Power Research Institute of State Grid Chongqing Electric Power Co Ltd
Wuhan University WHU
State Grid Shandong Electric Power Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Electric Power Research Institute of State Grid Chongqing Electric Power Co Ltd, Wuhan University WHU, State Grid Shandong Electric Power Co Ltd filed Critical Electric Power Research Institute of State Grid Chongqing Electric Power Co Ltd
Priority to CN201511016379.6A priority Critical patent/CN105388406B/en
Publication of CN105388406A publication Critical patent/CN105388406A/en
Application granted granted Critical
Publication of CN105388406B publication Critical patent/CN105388406B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • G01R31/1227—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 of components, parts or materials
    • G01R31/1254—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 of components, parts or materials of gas-insulated power appliances or vacuum gaps
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02—Column chromatography
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02—Column chromatography
    • G01N2030/022—Column chromatography characterised by the kind of separation mechanism
    • G01N2030/025—Gas chromatography

Abstract

The invention belongs to the field of on-line monitoring technology of insulative condition of SF6 (sulfur hexafluoride) gas insulated electric equipment, and in particular relates to a gas insulated electric equipment partial discharge multi-source joint detection method. The detection method mainly comprises the steps of preparing a test, cleaning a stainless steel cylinder, filling with SF6 gas, performing an industrial frequency AC SF6 gas PD test, pulse current detection, ultrahigh frequency sensor detection, fluorescent optical fiber sensor detection, discharge gas collection and component detection and the like. The detection method provided by the invention is simple in operation, liable to promote, and provides references for multi-dimensional information joint detection method. The detection method is widely applied to SF6 gas insulated electric equipment partial discharge multi-sensor joint detection under the condition of power frequency, and provides a simple test scheme for multi-dimensional information extraction of PD (Potential Difference) decomposition characteristics and a decomposition theory.

Description

A kind of gas insulated electric apparatus shelf depreciation multi-source associated detecting method
Technical field
The invention belongs to sulfur hexafluoride (SF 6) the state of insulation on-line monitoring technique field of gas insulated electric apparatus, be specifically related to a kind of gas insulated electric apparatus shelf depreciation multisensor joint-detection test method.
Background technology
With sulfur hexafluoride gas (SF 6) as insulation and the SF6 gas insulated combined electrical equipment (GasInsulatedSwitchgear of arc-extinguishing medium, be called for short GIS),, the advantage such as maintenance little, floor area little, flexible configuration high with its reliability develops rapidly and is widely used in high pressure and the ultra-high/extra-high voltage field of electric system, becomes one of the preferred unit and important symbol of modern transformer station gradually.GIS is generally considered few maintenance or even non-maintaining High-Voltage Electrical Appliances equipment always, but according to the statistics of the international bulk power grid council (CIGRE), the fault level that its failure rate is advised far above IEC standard.Some insulation fault type larger to equipment harm; as particle or exotic to be retained on GIS housing or insulator the fault, radome loosens or poor electric contact causes the fault etc. that cause; being difficult to again be found in on-the-spot test after mounting or insulation diagnosis, is along with the passing of working time develops into fault gradually.And fault is once occur, the all-sealed structure due to GIS makes the execution of localization of fault and service work very difficult; Compared with other conventional equipment, the average interruption maintenance time after its accident is longer, and power failure range is larger, often relates to non-faulting element.As transmission in electrical network and the hinge distributing electric energy, the safe and reliable operation of GIS is to the stable operation role of extra-high voltage electric power system, self-evident, is thus extremely necessary SF 6the premature insulator situation of gas insulated electric apparatus is effectively assessed and early warning.
The common recognition formed from present research and GIS operation maintenance through examining, cause GIS insulation fault mainly because GIS inside also exists various defect, these defects have distorted the electric field of GIS inside, internal field is made to concentrate and produce shelf depreciation (PartialDischarge, be called for short PD), under the continuous action of electric field and thermal field, PD constantly aggravates, and finally causes ultra-high voltage GIS equipment generation breakdown fault.From the kind of defect to mainly contain between serious loading error, free conducting particle, metallic projections, insulator surface and inherent vice, conductor electrically or Mechanical Contact bad etc.The most common electric fault feature of GIS punctures completely in insulation or produce PD before flashover.Because GIS accident causes primarily of insulation fault, and the early stage main forms of insulation fault is PD, so PD is the main cause causing insulation degradation, is again the characteristic quantity characterizing insulation status.So a kind of gas insulated electric apparatus shelf depreciation multisensor joint-detection experimental technique of the present invention, the defect that much inside exists can be found to a certain extent, to ensureing that the safe and reliable operation of GIS has important practical significance.
Domestic and international at SF at present 6the research of gas insulated electric apparatus PD on-line monitoring method mainly concentrates on the experimental technique of single monitoring means, as " sulfur hexafluoride discharge decomposition components analytic system and using method thereof " that the patent No. is ZL2007100784930, the patent No. is " the high-frequency local discharging discharge capacity monitoring acquisition method of ZL201010157377.X, device and system ", and the patent No. is the patents such as " infrared detecting device of sulfur hexafluoride gaseous discharge micro component and the method " of ZL200910104566.8, it is all the GIS on-line monitoring method based on single Partial discharge signal, the light that shelf depreciation produces can not be made full use of, electricity, sound, the faults of information to equipment such as chemistry are comprehensively diagnosed.
The insulating property of GIS device are the direct factors determining its useful life cycle, and accurate evaluation and the true state of insulation of grasp GIS device are the condition precedents of electric power enterprise support equipment assets.Meanwhile, for exist and the serious insulation defect that insulation degradation may be caused to lose efficacy takes effective fault diagnosis technology, be then for maintenance personal selects proper moment to carry out the powerful guarantee of targeted maintenance policy further.Fault diagnosis scheme based on a kind of gas insulated electric apparatus shelf depreciation multisensor joint-detection experimental technique of the present invention does not still realize the basis of GIS device life-cycle management, also to improving the security of whole electrical network, economy plays vital effect.
Summary of the invention
The object of the invention is for existing SF 6the single partial discharge signal detection method of gas insulated electric apparatus, provides a kind of SF 6gas insulated electric apparatus shelf depreciation multisensor joint-detection experimental technique, at experiment lab simulation SF 6shelf depreciation under various typical defect model in gas insulated electric apparatus, thus the characteristic information such as sound, light, component obtaining shelf depreciation, for putting the SF of information based on multi-source office 6gas insulated electric apparatus fault diagnosis and Condition assessment of insulation are laid and are provided experiment basis.
Technical scheme of the present invention is:
A kind of gas insulated electric apparatus shelf depreciation multisensor joint-detection experimental technique, is characterized in that, specifically comprise:
The step of Preparatory work of experiment: first place artificial insulation defect model and to device dust removal process, then check test device impermeability, then adopts purge of gas stainless steel cavity, finally carries out SF 6gas inflated;
SF under industrial frequency AC condition 6the step of the joint-detection simulated experiment of gas PD signal, specifically comprises:
Test experience one, inherent shortcoming is tested: carry out SF 6gas PD test first will be tested the intrinsic PD characteristic of whole test unit, and under the same test conditions, time by simulation prosthetic defect model, the threshold value of the trial voltage of shelf depreciation does not occur test unit; (1) step is completed under not placing manual simulation's defect condition, after the connection safety of check test circuit, power-frequency voltage on device when power-on is carried in prosthetic defect model by the regulation and control of pressure regulation platform, along with the additional power-frequency voltage of increase slowly, observe the signal be connected on the digital storage oscilloscope of pick-up unit, once find to occur small discharge pulse signal, to record and on the device defining this moment, applied voltage is the intrinsic initial PD voltage U of device g; Complete after initial PD magnitude of voltage determines work, applied voltage is reduced to 0 and cutting-off pressure-regulating control desk input end and the connection of 220V/50Hz civil power, with ground rod, all devices high-pressure side ground connection in whole test unit is discharged; Then conducting vacuum pump ball valve, opening external vacuum pump will carry out in described arc chamber vacuumizing process, observe pressure vacuum gauge its when being shown as below 0.01MPa, the vacuum pump ball valve described in orderly close-down and vacuum pump;
Test experience two, industrial frequency AC SF 6gas PD tests: the quartz glass watch window first opening gas discharge chamber side, manually the defects simulation model made is connected with it by the helicitic texture of ground connection conducting rod, regulates the distance between defect two electrodes to make electrode and defect two ends compact siro spinning technology by the regulating device bottom ground connection conducting rod; Then quartz glass is loaded onto by acting flange, also fix with the screw in compression that 12 screw diameters are 15mm with " O " shape rubber seal; Then SF is used 6purge of gas is carried out to described stainless steel cavity, after completing this step, continues the SF pouring 0.04MPa in stainless steel cavity 6gas, power-frequency voltage on device when power-on is carried in artificial defect model by the regulation and control of pressure regulation platform, observe the signal be connected on the digital storage oscilloscope of pick-up unit, once find to occur small discharge pulse signal, to record and on the device defining this moment, applied voltage is the initial PD voltage U of device st, with U stbe decided to be benchmark setting 1.1U st, 1.2U st, 1.3U st, 1.4U st, 1.5U st, 1.6U st, 1.7U- st, 1.8U steight power frequency applied voltages carry out test, and the trial voltage being applied to defect model should not exceed the intrinsic initial PD voltage U of device g; Continue to regulate power frequency applied voltage to increase to 1.2U st, at 1.2U- stvoltage under artificial insulation defect carried out to the PD test of continuous 96h, every 12h carries out a test data acquisition; Eight sampled datas of a kind of artificial insulation defect under this trial voltage can be obtained after the PD test of continuous 96h; Applied voltage is reduced to 0 and the connection of cutting-off pressure-regulating control desk input end and 220V/50Hz civil power, uses ground rod to all devices high-pressure side ground connection electric discharge in whole test unit; Then conducting Vacuum ball valve, opening external vacuum pump will carry out in described arc chamber vacuumizing process, observe pressure vacuum gauge its when being shown as below 0.01MPa, the vacuum pump ball valve described in orderly close-down and vacuum pump also disconnect;
Then SF is used 6purge of gas is carried out to described stainless steel cavity, completes the SF that this step continues to pour 0.04MPa afterwards in stainless steel cavity 6gas, regulates power frequency applied voltage to increase to 1.3U by pressure regulation platform st, at 1.3U stvoltage under artificial insulation defect carried out to the PD test of continuous 96h, every 12h carries out a test data acquisition; Eight sampled datas of a kind of artificial insulation defect under this trial voltage can be obtained after the PD test of continuous 96h; Applied voltage is reduced to 0 and the connection of cutting-off pressure-regulating control desk input end and 220V/50Hz civil power, uses ground rod to all devices high-pressure side ground connection electric discharge in whole test unit; Then conducting Vacuum ball valve, opening external vacuum pump will carry out in described arc chamber vacuumizing process, observe pressure vacuum gauge its when being shown as below 0.01MPa, the vacuum pump ball valve described in orderly close-down and vacuum pump also disconnect;
The test procedure of repetition gas washing inflating pressure like this, completes 1.1U st, 1.2U st, 1.3U st, 1.4U st, 1.5U st, 1.6U st, 1.7U st, 1.8U sttest figure under eight power frequency applied voltages; Based on these experimental study data, researchist is according to various SF under eight kinds of trial voltages 6the data message that the light signal of decomposition gas content and gas production rate, ultra-high frequency signal, fluorescence optical fiber obtains extracts the characteristic quantity characterizing PD intensity, research SF 6the mechanism that gas PD decomposes;
Test experience three, pulse current detects: adopt the multiple process in IEC60270 method to measure PD pulse voltage signal, by in parallel for indoor to a shelf depreciation prover and described gas discharge artificial insulation defect, the known pulse signal of discharge capacity is produced at insulation defect the two poles of the earth by described shelf depreciation prover, the crest value of impulse voltage U at described detection resistance two ends can be recorded by the described digital storage oscilloscope connected, and pulse voltage amplitude U and Apparent discharge magnitude Q is linear, therefore the crest value of impulse voltage U recorded according to pulse current method calculates Apparent discharge magnitude Q,
Test experience four, uhf sensor detects: to be fixed by uhf sensor before with pressure regulator pressurization external just to the position of insulation defect, by uhf sensor at digital storage oscilloscope record ground unrest, understand experimental situation noise level, then in the continuous P D process of the test of 96h, during every 11 ~ 12h, digital storage oscilloscope is accessed ultra-high frequency signal, carry out the PD signals collecting of power frequency period, arranging oscillographic sample frequency is 50MS/s, temporal resolution is 2ms/div, sampling number is 1M, i.e. 20ms time span, researchist rule of thumb judge described in digital oscilloscope on local discharge signal stablize time, start to gather lower 2500 the power frequency period discharge waveform data of each trial voltage, and the cable simultaneously by capacitive divider is drawn accesses the phase information of the acquisition power frequency reference voltage in oscillograph,
Test experience five, fluorescent optical fiber sensor detects: in the continuous P D process of the test of 96h, during every 11 ~ 12h, digital storage oscilloscope is accessed fluorescence optical fiber collection, arranging oscillographic sample frequency is 50MS/s, temporal resolution is 2ms/div, sampling number is 1M, i.e. 20ms time span, start to gather lower 2500 the power frequency period discharge waveform data of each trial voltage, and the cable simultaneously by capacitive divider is drawn accesses the phase information of the acquisition power frequency reference voltage in oscillograph;
Test experience six, the collection of discharge gas and detection: in the continuous P D process of the test of 96h, after electric discharge 12h, applied voltage is reduced to 0 and the connection of cutting-off pressure-regulating control desk input end and 220V/50Hz civil power, uses ground rod to all devices high-pressure side ground connection electric discharge in whole test unit; Then sampler bag to be connected on thief hatch and conducting sampling ball valve, to carry out the collection of a discharge gas, after completing, close sampling ball valve; Then regulation voltage rises to next trial voltage value and proceeds PD test, carries out a discharge gas collection more and so forth after 12h.
At above-mentioned a kind of gas insulated electric apparatus shelf depreciation multisensor joint-detection experimental technique, in described test experience six, gas chromatograph-mass spectrometer is adopted to be that Shimadzu GC/MS-QP2010Ultra carries out qualitative and quantitative analysis to each discharge gas gathered, , gas composition is 8um by thickness, and internal diameter is 0.32mm, and length is the special capillary column separation of 60m, is detected by MSD detecting device, this method adopts high-purity He of 99.999% as carrier gas, condition of work is: post case temperature mode is that constant temperature 35 DEG C keeps 7.5min, 10min is kept with the ramp to 105 of 70 DEG C/min DEG C, 3.5min is kept with the ramp to 250 of 100 DEG C/min DEG C, injector temperature is 220 DEG C, pressure flow hybrid control mode, pressure is 55kPa, total flow is 16.3mL/min, post flow is 1.21mL/min, linear velocity is 28cm/sec, purge flow rate is 3mL/min, split ratio is 10, ion source temperature is 200 DEG C, chromatographic mass spectrometry interface temperature is 220 DEG C, the solvent delay time is 0min, micro scanning width 0u, detector voltage 0kV, ionization mode is electricity bombardment ionization, acquisition mode is SIM quantitative test, sweep interval 0.3s, the method can realize SF 6decomposition components CF under PD 4, CO 2, SO 2f 2, SOF 2, H 2s, SO 2, CS 2etc. multiple gases effective separation and detect its concentration,
The gas sample that sampling obtains by through decompression, high pressure carrier gas (adopting helium herein) after purified treatment with flowing into chromatographic column thus realizing effective separation of different component, by selecting suitable detecting device, the electric signal of reactive component content can be obtained in terminal; The effect of detecting device gas composition content accounting is converted to electric signal to export, and to export and the examining report shown is called as chromatogram through data processing stations; Obviously, the peak area size of chromatogram is detecting device and exports electric signal size, relation proportional with component concentration; Meanwhile, by the chromatographic system of similarity condition, the same substance retention time in a detector of variable concentrations is constant, therefore can detect its retention time of calibrating gas of tested product in advance, utilize following formula to carry out quantitatively calibrating to tested product:
c i c s = A i A s = K i A i
Wherein, c sand c irepresent respectively survey the concentration of i-th kind of gas composition and gas thereof, A sand A ithen be respectively chromatographic peak area, K ifor the Absolute Calibration factor.
At above-mentioned a kind of gas insulated electric apparatus shelf depreciation multisensor joint-detection experimental technique, the concrete operations of the artificial insulation defect model of described placement and device dust removal process are: first, schematic diagram according to hookup accurately connects each device, successively ground connection is carried out to all testing equipments, guarantee the electrical security tested; Open the spherical top cover of the stainless steel cylindrical cavities of the gas discharge chamber in test unit, ethanol liquid is adopted to carry out cleaning wiping to the inwall of stainless steel cavity and artificial defect model, impurity dust on removal device, artificial defect two ends are twisted with high-low pressure guide rod respectively and is connected together, then dome cap seal is installed; Guarantee that impurity dust can not produce disturbing effect to whole test.
At above-mentioned a kind of gas insulated electric apparatus shelf depreciation multisensor joint-detection experimental technique, the bubble-tight concrete operations of described check test device are: first, open the vacuum pump that test unit outreaches, bled by the inflation inlet of stainless steel cavity, observe vacuum meter, Vacuum ball valve during pointed 0 ~ 0.01MPa on pressure vacuum gauge on stopping device and vacuum pump, mark on pointer gauge with marking pen, observe mark on pressure vacuum gauge after static 24 hours whether to change, if above-mentioned pressure vacuum gauge registration still remains on 0 ~ 0.015MPa and mark is almost unchanged, under then confirming this device vacuum state, impermeability is good, open the SF purchased 6the valve of gas cylinder and the air inlet ball valve of gas discharge chamber, manual adjustments air valve at the uniform velocity injects SF in stainless steel cavity 6gas, on observation Vacuum-Volts table, air pressure pointer is to 0.4 ~ 0.5MPa, and marks on table with marking pen, closes above-mentioned SF successively 6the valve of gas cylinder and air inlet ball valve, standing pressure vacuum gauge of observing after 24 hours still refers at 0.4 ~ 0.5MPa when pointer and marks almost unchanged, shows that described gas discharge chamber's air pressure seal performance is intact, finally guarantees the security of gas test.
At above-mentioned a kind of gas insulated electric apparatus shelf depreciation multisensor joint-detection experimental technique, the concrete operations of employing purge of gas stainless steel cavity are: first, connect vacuum pump outward, by the vacuum pump ball valve opened, process is vacuumized to above-mentioned stainless steel cavity, when the vacuum tightness of the instruction on pressure vacuum gauge is 0 ~ 0.01MPa, close above-mentioned vacuum pump ball valve and vacuum pump successively; Then SF is connected outside 6gas cylinder, injects SF by gas cylinder air valve and sample introduction ball valve to above-mentioned stainless steel cavity 6gas, rises within the scope of 0.3 ~ 0.4MPa by described stainless steel cavity internal gas pressure value, cleans described stainless steel cavity, leaves standstill the SF that 4 ~ 6h makes attachment in the previous test of stainless steel cavity 6the decomposition gas of gas and moisture fully gasify release; Then above-mentioned vacuumizing and inject SF is repeated 6gas process, thus to ensure in stainless steel cavity that foreign gas and inherent moisture content drop to can not influential degree to test findings.
At above-mentioned a kind of gas insulated electric apparatus shelf depreciation multisensor joint-detection experimental technique, adopt SF 6the concrete operations of gas inflated are: first, connect SF outward 6gas cylinder, injects SF by the valve of gas cylinder and air inlet ball valve to described stainless steel cavity 6gas, till gaseous tension list index is stabilized in 0.4MPa, then closes described SF successively 6the valve of gas cylinder and air inlet ball valve; Leave standstill and make SF in 4 ~ 6h hour 6be dispersed in gas discharge indoor.
Tool of the present invention has the following advantages: 1. the invention provides SF 6gas insulated electric apparatus shelf depreciation multisensor joint-detection test method, the single detection gimmick that compensate for existing SF6 gas insulated electric apparatus obtains the incomprehensive of PD information, is SF 6the state estimation of gas insulated electric apparatus and the development research of fault diagnosis technology provide experimental basis; 2. dismountable insulation defect model framework in device of the present invention, enumerates SF 6gas insulated electric apparatus common deficiency, and provide an explorative insulation defect carrying platform, test can be carried out to other defect equally and have well perspective.3. in apparatus of the present invention, gas composition detection system uses gas chromatograph-mass spectrometer, can detect SO 2f 2, SOF 2, CO 2, CF 4, H 2s, SO 2deng SF 6the content of the various decomposition gas products of gas, detection sensitivity is high, and amount of samples is few, and selectivity is good, and accuracy of detection can reach ppmv level; 4. what the uhf sensor that the present invention adopts adopted is homemade antenna, highly sensitive, has good selectivity and precision; 5. the joint detection method that the present invention adopts gathers identical SF by same digital storage oscilloscope simultaneously 6gas PD divides the office taken off to put characteristic information, and test figure has very high science; 6. the inventive method is simple to operate, is easy to promote, for multidimensional information associated detecting method is offered reference.The present invention is widely used in SF under power frequency condition 6gas insulated electric apparatus shelf depreciation multisensor joint-detection, for the various dimensions information extraction of PD resolution characteristic and resolution theory provides a kind of easy testing program.
Accompanying drawing explanation
Fig. 1 is the hookup theory diagram of apparatus of the present invention;
Fig. 2 is the structural representation of the gas discharge chamber of apparatus of the present invention;
Fig. 3 is the vertical view of Fig. 2;
Fig. 4 a is the artificial insulation defect apparatus structure schematic diagram (conducting rod protrusion defect) that the present invention utilizes
Fig. 4 b is the artificial insulation defect apparatus structure schematic diagram (insulator surface metal attachments defect) that the present invention utilizes.
Fig. 4 c is the artificial insulation defect apparatus structure schematic diagram (insulator hole/rift defect) that the present invention utilizes.
Fig. 4 d is the artificial insulation defect apparatus structure schematic diagram (free metal grain defect) that the present invention utilizes.
Fig. 5 is the theory diagram of the pulse current method calibration circuit that the inventive method adopts.
Fig. 6 is the calibration curve of embodiment 1 pulse current method.
Fig. 7 is the total ion chromatogram (totalionchromatogram, TIC) of the compound sample gas that embodiment 1 utilizes this method to detect.
Fig. 8 is the calibrating gas allocation list of embodiment 1 for quantitatively calibrating gas chromatograph-mass spectrometer.
The calibrating gas that Fig. 9 utilizes table 1 to configure for embodiment 1 carries out the CF of quantitatively calibrating acquisition to gas chromatograph-mass spectrometer 4calibration curve.
The calibrating gas that Figure 10 utilizes table 1 to configure for embodiment 1 carries out the CO of quantitatively calibrating acquisition to gas chromatograph-mass spectrometer 2calibration curve.
The calibrating gas that Figure 11 utilizes table 1 to configure for embodiment 1 carries out the SO of quantitatively calibrating acquisition to gas chromatograph-mass spectrometer 2f 2calibration curve.
The calibrating gas that Figure 12 utilizes table 1 to configure for embodiment 1 carries out the SOF of quantitatively calibrating acquisition to gas chromatograph-mass spectrometer 2calibration curve.
The calibrating gas that Figure 13 utilizes table 1 to configure for embodiment 1 carries out the H of quantitatively calibrating acquisition to gas chromatograph-mass spectrometer 2the calibration curve of S.
The calibrating gas that Figure 14 utilizes table 1 to configure for embodiment 1 carries out the SO of quantitatively calibrating acquisition to gas chromatograph-mass spectrometer 2calibration curve.
The calibrating gas that Figure 15 utilizes table 1 to configure for embodiment 1 carries out the CS of quantitatively calibrating acquisition to gas chromatograph-mass spectrometer 2calibration curve.
Embodiment
Below in conjunction with embodiment, further illustrate the present invention.
In figure: 1, voltage regulation of electric power sources control desk, 2, power frequency testing transformer is put, 3 without office, protective resistance is put, 4 without office, power frequency capacitive divider, 5, coupling capacitance, 6, detect impedance, 7, gas discharge chamber, 8, artificial insulation defect model, 9, fluorescent optical fiber sensor, 10, fiber coupler, 11, ordinary optic fibre, 12, gas chromatograph-mass spectrometer, 13, fiber adapter, 14, photomultiplier, 15, UHF microstrip antenna, 16, digital storage oscilloscope, 17, high pressure guide rod, 18, bushing, 19 elliposoidal top covers, 20, screw, 21, flange, 22, stainless steel cylindrical cavities, 23, pressure vacuum gauge, 24, pressure vacuum gauge ball valve, 25, vacuum pump ball valve, 26, vacuum pump, 27, sample introduction ball valve, 28, injection port, 29, sampling ball valve, 30, thief hatch, 31, artificial insulation defect, 32, ground connection conducting rod, 33, feet, 34, quartz glass view window, 35, fluorescent optical fiber sensor passage, 36, shelf depreciation prover.
First the concrete structure of the test unit that the present invention relates to is introduced:
Known by device circuit theory and structure schematic diagram 1 ~ 4, a kind of gas insulated electric apparatus shelf depreciation multisensor combined monitoring experimental provision, primarily of industrial-frequency alternating current origin system, gas discharge chamber, artificial insulation defect model, multisensor combined detection system forms, mainly comprise: 1, voltage regulation of electric power sources control desk, 2, power frequency testing transformer is put without office, 3, protective resistance is put without office, 4, power frequency capacitive divider, 5, coupling capacitance, 6, detect impedance, 7, gas discharge chamber, 8, artificial insulation defect model, 9, fluorescent optical fiber sensor, 10, fiber coupler, 11, ordinary optic fibre, 12, gas chromatograph-mass spectrometer, 13, fiber adapter, 14, photomultiplier, 15, uhf sensor, 16, digital storage oscilloscope bushing.(Fig. 1-4)
Industrial-frequency alternating current origin system by voltage regulation of electric power sources control desk 1, to put power frequency testing transformer 2 without office, put protective resistance 3 without office, power frequency capacitive divider forms 4 and forms.In laboratory, industrial frequency AC civil power 220V/50Hz is through wire and voltage regulation of electric power sources control desk 1 (commercial products, capacity is 10kVA) input port (output voltage is 0 ~ 250V) connect, power frequency testing transformer 2 (commercial products is put by the access of its output port without office through the regulation and control of pressure regulation platform, 50kV/10kVA) input port, the output port (high pressure port) putting power frequency testing transformer 2 without office accesses by protective resistance 3 (commercial products through wire, 10k Ω/0.5A) it exports capacitive divider 4 (commercial products afterwards, 50kV/1000:1, precision is 1.0 grades) in parallelly with gas discharge chamber 7 to access, such industrial-frequency alternating current origin system regulates and controls to provide to the shelf depreciation of the indoor insulation defect model electrode of the gas discharge connected through wire by pressure regulation platform and regulates power frequency ac voltage continuously.
Gas discharge chamber from structure from top to bottom, is made up of high pressure guide rod 17, bushing 18, elliposoidal top cover 19, screw 20, flange 21, stainless steel cylindrical cavities 22, pressure vacuum gauge ball valve 23, pressure vacuum gauge 24, vacuum pump ball valve 25, vacuum pump 26, sample introduction ball valve 27, injection port 28, sampling ball valve 29, thief hatch 30, artificial insulation defect 31, ground connection conducting rod 32, feet 33, quartz glass view window 34 respectively.It is the through hole of 200mm that described elliposoidal top cover 19 center arranges an aperture, the described high pressure guide rod 17 that described teflon bushing 18 wraps up and flange 21 are deep into cylinder interior through the disposable through hole from top cover in package shape, by flange 21, the through hole of top cover is sealed, the port that high pressure guide rod 17 stretches into cylinder interior adopts screw thread overall length to be 20mm, and pitch is the helicitic texture of 1mm; The affixed diameter of described stainless steel cylindrical cavities upper port annular be 550mm, thickness is the flange 21 described in 15mm, it adopts rectangular seal slot fit " O " shape seal with elastometic washer structure, and described flange use screw 20 that 12 screw diameters are 15mm to provide diameter is 550mm by enough snap-in forces, thickness is fixed on described stainless steel cylinder body for the elliposoidal top cover 19 described in 12mm flange 21 builds seal chamber; Described stainless steel cylindrical cavities 22 by internal diameter be 500mm, thickness is 10mm, is highly that the right cylinder of 600mm is formed, upper end is dismountable described elliposoidal top cover 19, bottom is the elliposoidal end socket in welding, and described stainless steel cylindrical cavities 22 structure can bear the pressure of more than five atmospheric pressure; The through hole that an aperture is 20mm is dug at the center position of described stainless steel cylindrical cavities 22 left side wall distance bottom 300mm; This through hole welds the stainless-steel pipe of internal diameter 20mm, an external diameter 10mm, long 400mm, described pressure vacuum gauge 24 is connected on the stainless-steel tube at through hole 200mm place in order to monitor vacuum tightness and the air pressure of described gas discharge chamber by vacuum pressure ball valve 23, on this stainless-steel tube at through hole 250mm place, connect a sample introduction ball valve 27 again, this sample introduction ball valve other end injection port 28 is communicated with in order to inflate by Teflon wireway with steel cylinder; The through hole that an aperture is 20mm is dug at described stainless steel cylindrical cavities 22 right side wall distance 300mm place, bottom, this through hole welds the stainless-steel pipe of internal diameter 20mm, an external diameter 10mm, long 200mm, a sampling ball valve 29 and thief hatch 30 is connect again on this stainless-steel tube at through hole 200mm place, the other end thief hatch 30 of sampling ball valve 29 is communicated with described gas chromatograph-mass spectrometer 12 by Teflon wireway, carries out the sampling of shelf depreciation decomposition gas; At the center position of former and later two sidewall distances bottom 250mm of described stainless steel cylindrical cavities 22, the quartz glass view window 34 that two diameters are 100mm, thickness is 6mm is set respectively, this quartz glass is clipped between flange 21, and be also fixed with the screw 19 that 8 screw diameters are 15mm with O shape rubber seal, can be observed shelf depreciation evolution by described quartz observing window; Immediately below the thief hatch 30 of described stainless steel cylindrical cavities 22,80mm place opens a 15mm optical fiber through hole, and guarantee sealing by the screw in compression channel interior pad rubber ring of outside 15mm, the fluorescent optical fiber sensor passage 35 described in formation connects external channel; Open the through hole of a 12mm in the bottom center of described stainless steel cylindrical cavities 22, described ground connection conducting rod passes this through hole rubber seal at described stainless steel cylindrical cavities bottom; Described ground connection conducting rod 31 stretches out one end of cylinder body by copper braid (city's purchased items, 25mm is wide) ground connection, its one end in cylinder chamber and adopt screw thread overall length to be 20mm, and pitch is the helicitic texture of 1mm; At the symmetrical and feet being 400mm with affixed 3 length that gradient is 10 degree of the outer globally outer side center of the bottom of described stainless steel cylindrical cavities, three support frames as described above are connected apart from 100mm places, ground with cross bars, play a supportive role to whole test unit.
Four kinds of Exemplary insulative defect model comprise conducting rod protrusion defect model (Fig. 4 a), insulator surface metal attachments defect model (Fig. 4 b), insulator hole/rift defect model (Fig. 4 c) and free metal particulate insulation defect model (Fig. 4 d).Described conducting rod protrusion defect model uses pin-plate electrode; Described aluminium matter pin electrode is similar to real gas insulated electric apparatus central conductor leader, and its diameter is 4mm, and length is 40mm, and wherein pin electrode is 20mm from rounded ends start screw threads length, and the length of tip portion is 10mm, and tip curvature radius is 0.4mm; The plate electrode plate electrode diameter be similar to described in real gas insulation electrical equipment shell of described stainless steel material is 120mm, and thickness is 12mm, and plate electrode bottom center connecting link diameter is 4mm, and length is 25mm, and its bottom reach is 15mm.The described measure-alike corrosion resistant plate-plate parallel pole of insulator surface metal attachments defect model use employing is similar to the Electric Field Distribution in cavity, with the supporting insulator in column epoxy resin block approximate gas insulation electrical equipment, paste certain copper scale when binding electrode and insulator with epoxide-resin glue simultaneously and carried out the filthy defect of approximate simulation.Described plate electrode diameter is 120mm, and thickness is 12mm, and upper and lower two Electrode connection shank diameters are 4mm, and length is 25mm, and its end thread length is 15mm, and plate electrode spacing is 25mm; Described cylindrical ring epoxy resins diameter is 60mm, is highly about 25mm; The region vertical length 15mm of described bonding copper scale, wide 1.5mm, copper scale diameter is all within 100 μm.Described insulator hole/pad two pieces of epoxy sheet between rift defect model use cylindrical ring epoxy resins and corrosion resistant plate electrode to form air gap to simulate; Described plate electrode diameter is 120mm, and thickness is 12mm, and upper and lower two Electrode connection shank diameters are 4mm, and length is 25mm, and its end thread length is 15mm, and plate electrode spacing is about 21mm; Described cylindrical ring epoxy resins diameter is 60mm, is highly 20mm; Described air gap thickness is 1mm.Described free metal particulate insulation defect model adopts the aluminium foil of stainless steel ball-bowl electrode and the certain size that is positioned over hemispheric bowl electrode interior to simulate; Described ball electrode diameter is 30mm, and bowl electrode external diameter is 120mm, and thickness is 2mm, and described ball electrode and the Electrode connection shank diameter of bowl electrode are 4mm, and length is 35mm, and wherein reach is 20mm; Described rectangle aluminium foil is of a size of 2mm × 2mm.
Described multisensor combined detection system comprises pulse current method sensor detecting system, uhf sensor detection system, gaschromatographic mass spectrometry detecting sensor detection system and fluorescent optical fiber sensor detection system four parts, wherein pulse current detecting sensor is based on the detection method in parallel of IEC60270, by high pressure port guide line and the coupling capacitance 5 (commercial products of described gas discharge chamber 7, 120kV/1000pF) high pressure port is connected, the low pressure end of described coupling capacitance 5 is then by wire and detection impedance 6 (commercial products, No. 3) be connected on digital storage oscilloscope 16, the pulse signal of the insulation defect shelf depreciation generation of described gas discharge chamber is amplified into digital storage oscilloscope 16 via detection impedance 6 and shows, the pulse amplitude information of shelf depreciation is detected by digital storage oscilloscope 16, described uhf sensor detection system is by accessing in digital storage oscilloscope 16 with described electric discharge air chamber and the non-contacting UHF microstrip antenna 15 (laboratory customizes) of experiment power supply system through cable, the partial-discharge ultrahigh-frequency signal of described artificial insulation defect is detected, extracts the ultrahigh frequency information of shelf depreciation, the Teflon wireway of the air outlet parts of described gaschromatographic mass spectrometry sensor detecting system through being connected to gas discharge chamber 7 cylinder body carries out the collection of shelf depreciation decomposition gas, the SO of ppbv level is detected by gas chromatograph-mass spectrometer 12 (commercial products, Shimadzu GC/MS-QP2010Ultra) 2f 2, SOF 2, CO 2, CF 4, H 2s, SO 2deng SF 6the shelf depreciation decomposition gas information of gas, described fluorescent optical fiber sensor detection system is out received on fiber coupler by the fluorescent optical fiber sensor passage on described gas discharge chamber's cylinder body by the fluorescent optical fiber sensor being placed on described gas discharge indoor, photomultiplier Single port is accessed after being connected to fiber adapter by ordinary optic fibre, the another port of described photomultiplier connects power supply and its last port is connected on digital oscilloscope through electric current, is detected the optoelectronic information of shelf depreciation by digital oscilloscope.
Embodiment
A kind of gas insulated electric apparatus shelf depreciation multisensor joint-detection experimental technique, utilizes above-mentioned device, to SF 6gas insulated electric apparatus carries out the simulated experiment of PD and various dimensions office, and to put the concrete steps of analysis of information collection as follows:
(1) Preparatory work of experiment
1. artificial insulation defect model and device dust removal process is placed
First, the schematic diagram Fig. 1 according to hookup accurately connects each device, carries out ground connection successively to all testing equipments, guarantees the electrical security tested; Open the spherical top cover 19 of the stainless steel cylindrical cavities 22 of the gas discharge chamber 7 in test unit, ethanol liquid is adopted to carry out cleaning wiping to the inwall of stainless steel cavity 22 and artificial defect model 31, impurity dust on removal device, artificial defect two ends are twisted with high-low pressure guide rod respectively and is connected together, then by packaged for spherical top cover 19; Guarantee that impurity dust can not produce disturbing effect to whole test;
2. check test device impermeability
First, sampling ball valve 29 and sample introduction ball valve 27 are tightened closedown, open vacuum pump ball valve 25 and the pressure vacuum gauge ball valve 24 of this device, after confirming that described each valve opening and closing is correct, open the vacuum pump 26 that gas discharge chamber 7 outreaches, bled by the inflation inlet of stainless steel cavity, observe vacuum pull table 23, pressure vacuum gauge ball valve 24 during pointed 0 ~ 0.01MPa on pressure vacuum gauge 23 on stopping device and vacuum pump 26, mark on pointer gauge with marking pen, observe mark on pressure vacuum gauge 23 after static 24 hours whether to change, if above-mentioned pressure vacuum gauge registration still remains on 0 ~ 0.015MPa and mark is almost unchanged, under then confirming this gas discharge chamber 7 vacuum state, impermeability is good.Open the SF purchased 6the valve of gas cylinder and the air inlet ball valve 29 of gas discharge chamber, manual adjustments at the uniform velocity injects SF in stainless steel cavity 22 6gas, on observation Vacuum-Volts table 23, air pressure pointer is to 0.35 ~ 0.5MPa, and marks on table with marking pen, closes above-mentioned SF successively 6the valve of gas cylinder and air inlet ball valve 29, leave standstill and observe pressure vacuum gauge 23 after 24 hours when pointer and still refer at 0.4 ~ 0.5MPa and mark almost unchanged, show that described gas discharge chamber 7 air pressure seal performance is intact, finally guarantee sealing and the security of gas test;
3. SF 6purge of gas stainless steel cavity
Complete (1)-1. 2. after step, connect vacuum pump 26 outward and open vacuum pump ball valve 25, by the vacuum pump ball valve 25 opened, process is vacuumized to above-mentioned stainless steel cavity 22, when the vacuum tightness of the instruction on pressure vacuum gauge 23 is 0 ~ 0.01MPa, close above-mentioned vacuum pump ball valve 25 and vacuum pump 26 successively.Then SF is connected outside 6gas cylinder, injects SF by gas cylinder air valve and sample introduction ball valve 27 to above-mentioned stainless steel cavity 22 6gas, rises within the scope of 0.3 ~ 0.4MPa by described stainless steel cavity 22 internal gas pressure value, cleans described stainless steel cavity 22, leaves standstill the SF that 4 ~ 6h makes attachment in stainless steel cavity 22 previous test 6the decomposition gas of gas and moisture fully gasify release; Then above-mentioned vacuumizing and inject SF is repeated 6gas process, thus to ensure in stainless steel cavity 22 that foreign gas and inherent moisture content drop to can not influential degree to test findings;
4. SF 6gas inflated
Complete (1)-3. after step, connect SF outward 6gas cylinder, injects SF by the valve of gas cylinder and air inlet ball valve 27 to described stainless steel cavity 22 6gas, till pressure vacuum gauge 23 pointer is stabilized in 0.4MPa, then closes described SF successively 6the valve of gas cylinder and air inlet ball valve 27; Leave standstill and make SF in 4 ~ 6h hour 6be dispersed in gas discharge indoor;
(2) industrial frequency AC SF is carried out 6gas PD tests
1. the intrinsic PD starting potential test of device
Carry out industrial frequency AC SF 6gas PD test before, need by pressurization to the office of device itself discharge water put down determine, namely this test unit is being under the same external environment condition geographical conditions of defect test, and determining device does not produce the trial voltage threshold value of PD.Therefore, do not place any defect and carry out (1) step test, after the connection safety of check test circuit, power-frequency voltage is loaded on the device when prosthetic defect model by power-on Regulation Control platform 1, along with the additional power-frequency voltage of increase slowly, observing the signal that is connected on the digital storage oscilloscope 16 of pick-up unit, once find to occur small discharge pulse signal, to record and on the device defining this moment, applied voltage is the intrinsic initial PD voltage U of device g; Complete after initial PD magnitude of voltage determines work, applied voltage is reduced to 0 and the connection of cut off the electricity supply Regulation Control platform 1 input end and 220V/50Hz civil power, uses ground rod to all devices high-pressure side ground connection electric discharge in whole test unit; Then conducting vacuum pump ball valve 25, opens external vacuum pump 26 and is undertaken vacuumizing process by described gas discharge chamber 7, observe pressure vacuum gauge its when being shown as below 0.01MPa, the vacuum pump ball valve 25 described in orderly close-down and vacuum pump 26;
2. industrial frequency AC SF is carried out 6gas PD tests
First the quartz glass view window 34 of gas discharge chamber side is opened, manually the needle plate model of the simulation metallic projections defect in the artificial defect model 31 made is connected with it by the helicitic texture of ground connection conducting rod 32, regulates the distance between defect two electrodes to make electrode and defect two ends compact siro spinning technology by the regulating device bottom ground connection conducting rod 32; Then quartz glass view window 34 is loaded onto by acting flange, also fix with the screw in compression that 12 screw diameters are 15mm with " O " shape rubber seal; Then SF is used 6purge of gas is carried out to described stainless steel cavity 22, after completing this step, continues the SF pouring 0.04MPa in stainless steel cavity 22 6gas, the power-frequency voltage that power-on Regulation Control platform 1 regulates and controls to be carried on artificial defect model 31, slow supercharging, observe the signal be connected on the digital storage oscilloscope 16 of pick-up unit, once find to occur small discharge pulse signal, to record and on the device defining this moment, applied voltage is the initial PD voltage U of device st, with U stbe decided to be benchmark setting 1.1U st, 1.2U st, 1.3U- st, 1.4U st, 1.5U st, 1.6U st, 1.7U st, 1.8U steight power frequency applied voltages carry out test, guarantee that it is no more than the intrinsic initial PD voltage U of device when setting applied voltage g; Continue to regulate power frequency applied voltage to increase to 1.2U st, at 1.2U stvoltage under artificial insulation defect 31 carried out to the PD test of continuous 96h, every 12h carries out a test data acquisition; Eight sampled datas of a kind of artificial insulation defect 31 under this trial voltage can be obtained after the PD test of continuous 96h; Applied voltage is reduced to 0 and the connection of cut off the electricity supply Regulation Control platform 1 input end and 220V/50Hz civil power, uses ground rod to all devices high-pressure side ground connection electric discharge in whole test unit; Then conducting vacuum pump ball valve 25, opening external vacuum pump 26 will carry out in described arc chamber vacuumizing process, observe pressure vacuum gauge its when being shown as below 0.01MPa, the vacuum pump ball valve 25 described in orderly close-down and vacuum pump 26 also disconnect vacuum pump 26;
Then SF is used 6purge of gas is carried out to described stainless steel cavity 22, completes the SF that this step continues to pour 0.04MPa afterwards in stainless steel cavity 6gas, regulates power frequency applied voltage to increase to 1.3U by voltage regulation of electric power sources control desk 1 st, at 1.3U stvoltage under artificial insulation defect 31 carried out to the PD test of continuous 96h, every 12h carries out a test data acquisition; Eight sampled datas of a kind of artificial insulation defect 31 under this trial voltage can be obtained after the PD test of continuous 96h; Applied voltage is reduced to 0 and the connection of cut off the electricity supply Regulation Control platform 1 input end and 220V/50Hz civil power, uses ground rod to all devices high-pressure side ground connection electric discharge in whole test unit; Then conducting Vacuum ball valve, opening external vacuum pump 26 will carry out in described arc chamber vacuumizing process, observe pressure vacuum gauge 23 its when being shown as below 0.01MPa, the vacuum pump ball valve 25 described in orderly close-down and vacuum pump 26 also disconnect vacuum pump 26;
The test procedure of repetition gas washing inflating pressure like this, completes 1.1U st, 1.2U st, 1.3U st, 1.4U st, 1.5U st, 1.6U st, 1.7U st, 1.8U sttest figure under eight power frequency applied voltages; Based on these experimental study data, researchist is according to various SF under eight kinds of trial voltages 6the data message that the light signal of decomposition gas content and gas production rate, ultra-high frequency signal, fluorescence optical fiber obtains extracts the characteristic quantity characterizing PD intensity, research SF 6the mechanism that gas PD decomposes.
3. pulse current detects
The multiple process in IEC60270 method is adopted to measure PD pulse voltage signal, as shown in Figure 5, one shelf depreciation prover 36 is in parallel with artificial insulation defect 31 in described gas discharge chamber 7, the known pulse signal of discharge capacity is produced at artificial insulation defect 31 the two poles of the earth by described shelf depreciation prover 36, the crest value of impulse voltage U at described detection impedance 6 two ends can be recorded by the described digital storage oscilloscope 16 connected, and pulse voltage amplitude U and Apparent discharge magnitude Q is linear, therefore the crest value of impulse voltage U recorded according to pulse current method calculates Apparent discharge magnitude Q, as the linear relationship chart of the pulse voltage amplitude U that draws in Fig. 6 and Apparent discharge magnitude Q,
4. uhf sensor detects
Uhf sensor 15 is fixed external just to the position of artificial insulation defect 31 before pressurizeing with power supply Regulation Control platform 1, ground unrest is recorded at digital storage oscilloscope 16 by uhf sensor, understand experimental situation noise level, then in the continuous P D process of the test of 96h, during every 11 ~ 12h, digital storage oscilloscope 16 is accessed ultra-high frequency signal, carry out the PD signals collecting of power frequency period, the sample frequency arranging digital storage oscilloscope 16 is 50MS/s, temporal resolution is 2ms/div, sampling number is 1M, i.e. 20ms time span, researchist rule of thumb judge described in digital oscilloscope on local discharge signal stablize time, start to gather lower 2500 the power frequency period discharge waveform data of each trial voltage, and the cable simultaneously by capacitive divider 4 is drawn accesses the phase information of the acquisition power frequency reference voltage in digital storage oscilloscope 16.
5. fluorescent optical fiber sensor detects
In the continuous P D process of the test of 96h, during every 11 ~ 12h, digital storage oscilloscope 16 is accessed the PD information acquisition of fluorescent optical fiber sensor 9, the sample frequency arranging digital storage oscilloscope 16 is 50MS/s, temporal resolution is 2ms/div, sampling number is 1M, i.e. 20ms time span, start to gather lower 2500 the power frequency period discharge waveform data of each trial voltage, and the cable simultaneously by capacitive divider 4 is drawn accesses the phase information of the acquisition power frequency reference voltage in digital storage oscilloscope 16.
6. the collection of discharge gas and component detect
In the continuous P D process of the test of 96h, after electric discharge 12h, applied voltage is reduced to 0 and the connection of cut off the electricity supply Regulation Control platform 1 input end and 220V/50Hz civil power, uses ground rod to all devices high-pressure side ground connection electric discharge in whole test unit; Then sampler bag to be connected on thief hatch 30 and conducting sampling ball valve 29, to gather discharge gas, after completing, close sampling ball valve 29; Then regulation voltage rises to next trial voltage value and proceeds PD test, carries out a discharge gas collection more and so forth after 12h;
This device adopts gas chromatograph-mass spectrometer 12 to be that Shimadzu GC/MS-QP2010Ultra carries out qualitative and quantitative analysis to each discharge gas gathered, , gas composition is 8um by thickness, and internal diameter is 0.32mm, and length is the special capillary column separation of 60m, is detected by MSD detecting device, this method adopts high-purity He of 99.999% as carrier gas, condition of work is: post case temperature mode is that constant temperature 35 DEG C keeps 7.5min, 10min is kept with the ramp to 105 of 70 DEG C/min DEG C, 3.5min is kept with the ramp to 250 of 100 DEG C/min DEG C, injector temperature is 220 DEG C, pressure flow hybrid control mode, pressure is 55kPa, total flow is 16.3mL/min, post flow is 1.21mL/min, linear velocity is 28cm/sec, purge flow rate is 3mL/min, split ratio is 10, ion source temperature is 200 DEG C, chromatographic mass spectrometry interface temperature is 220 DEG C, the solvent delay time is 0min, micro scanning width 0u, detector voltage 0kV, ionization mode is electricity bombardment ionization, acquisition mode is SIM quantitative test, sweep interval 0.3s, the method can realize SF 6decomposition components CF under PD 4, CO 2, SO 2f 2, SOF 2, H 2s, SO 2, CS 2etc. multiple gases effective separation and detect its concentration, be the total ion chromatogram TIC of the compound sample gas that this method detects as shown in Figure 7, as shown in Figure 7, CF 4, CO 2, SO 2f 2, SOF 2, H 2s, SO 2, CS 2retention time be respectively 4.356min, 4.853min, 5.096min, 5.47min, 6.099min, 7.154min, 18.414min, therefore the method achieve effective separation of above-mentioned multiple gases.
The gas sample that sampling obtains by through decompression, high pressure carrier gas (adopting helium herein) after purified treatment with flowing into chromatographic column thus realizing effective separation of different component, by selecting suitable detecting device, the electric signal of reactive component content can be obtained in terminal.The effect of detecting device gas composition content accounting is converted to electric signal to export, and to export and the examining report shown is called as chromatogram through data processing stations.Obviously, the peak area size of chromatogram is detecting device and exports electric signal size, relation proportional with component concentration.Meanwhile, by the chromatographic system of similarity condition, the same substance retention time in a detector of variable concentrations is constant, therefore can detect its retention time of calibrating gas of tested product in advance, utilize following formula to carry out quantitatively calibrating to tested product:
c i c s = A i A s = K i A i
Wherein, c sand c irepresent respectively survey the concentration of i-th kind of gas composition and gas thereof, A sand A ithen be respectively chromatographic peak area, K ifor the Absolute Calibration factor.As Fig. 9---Figure 14 shows that utilize table 1 the calibrating gas that configures gas chromatograph-mass spectrometer is carried out to the CF of quantitatively calibrating acquisition 4, CO 2, SO 2f 2, SOF 2, H 2s, SO 2, CS 2calibration curve.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.

Claims (6)

1. a gas insulated electric apparatus shelf depreciation multisensor joint-detection experimental technique, is characterized in that, specifically comprise:
The step of Preparatory work of experiment: first place artificial insulation defect model and to device dust removal process, then check test device impermeability, then adopts purge of gas stainless steel cavity, finally carries out SF 6gas inflated;
SF under industrial frequency AC condition 6the step of the joint-detection simulated experiment of gas PD signal, specifically comprises:
Test experience one, inherent shortcoming is tested: carry out SF 6gas PD test first will be tested the intrinsic PD characteristic of whole test unit, and under the same test conditions, time by simulation prosthetic defect model, the threshold value of the trial voltage of shelf depreciation does not occur test unit; (1) step is completed under not placing manual simulation's defect condition, after the connection safety of check test circuit, power-frequency voltage on device when power-on is carried in prosthetic defect model by the regulation and control of pressure regulation platform, along with the additional power-frequency voltage of increase slowly, observe the signal be connected on the digital storage oscilloscope of pick-up unit, once find to occur small discharge pulse signal, to record and on the device defining this moment, applied voltage is the intrinsic initial PD voltage U of device g; Complete after initial PD magnitude of voltage determines work, applied voltage is reduced to 0 and cutting-off pressure-regulating control desk input end and the connection of 220V/50Hz civil power, with ground rod, all devices high-pressure side ground connection in whole test unit is discharged; Then conducting vacuum pump ball valve, opening external vacuum pump will carry out in described arc chamber vacuumizing process, observe pressure vacuum gauge its when being shown as below 0.01MPa, the vacuum pump ball valve described in orderly close-down and vacuum pump;
Test experience two, industrial frequency AC SF 6gas PD tests: the quartz glass watch window first opening gas discharge chamber side, manually the defects simulation model made is connected with it by the helicitic texture of ground connection conducting rod, regulates the distance between defect two electrodes to make electrode and defect two ends compact siro spinning technology by the regulating device bottom ground connection conducting rod; Then quartz glass is loaded onto by acting flange, also fix with the screw in compression that 12 screw diameters are 15mm with " O " shape rubber seal; Then SF is used 6purge of gas is carried out to described stainless steel cavity, after completing this step, continues the SF pouring 0.04MPa in stainless steel cavity 6gas, power-frequency voltage on device when power-on is carried in artificial defect model by the regulation and control of pressure regulation platform, observe the signal be connected on the digital storage oscilloscope of pick-up unit, once find to occur small discharge pulse signal, to record and on the device defining this moment, applied voltage is the initial PD voltage U of device st, with U stbe decided to be benchmark setting 1.1U st, 1.2U st, 1.3U st, 1.4U st, 1.5U st, 1.6U st, 1.7U st, 1.8U steight power frequency applied voltages carry out test, and the trial voltage being applied to defect model should not exceed the intrinsic initial PD voltage U of device g; Continue to regulate power frequency applied voltage to increase to 1.2U st, at 1.2U stvoltage under artificial insulation defect carried out to the PD test of continuous 96h, every 12h carries out a test data acquisition; Eight sampled datas of a kind of artificial insulation defect under this trial voltage can be obtained after the PD test of continuous 96h; Applied voltage is reduced to 0 and the connection of cutting-off pressure-regulating control desk input end and 220V/50Hz civil power, uses ground rod to all devices high-pressure side ground connection electric discharge in whole test unit; Then conducting Vacuum ball valve, opening external vacuum pump will carry out in described arc chamber vacuumizing process, observe pressure vacuum gauge its when being shown as below 0.01MPa, the vacuum pump ball valve described in orderly close-down and vacuum pump also disconnect;
Then SF is used 6purge of gas is carried out to described stainless steel cavity, completes the SF that this step continues to pour 0.04MPa afterwards in stainless steel cavity 6gas, regulates power frequency applied voltage to increase to 1.3U by pressure regulation platform st, at 1.3U stvoltage under artificial insulation defect carried out to the PD test of continuous 96h, every 12h carries out a test data acquisition; Eight sampled datas of a kind of artificial insulation defect under this trial voltage can be obtained after the PD test of continuous 96h; Applied voltage is reduced to 0 and the connection of cutting-off pressure-regulating control desk input end and 220V/50Hz civil power, uses ground rod to all devices high-pressure side ground connection electric discharge in whole test unit; Then conducting Vacuum ball valve, opening external vacuum pump will carry out in described arc chamber vacuumizing process, observe pressure vacuum gauge its when being shown as below 0.01MPa, the vacuum pump ball valve described in orderly close-down and vacuum pump also disconnect;
The test procedure of repetition gas washing inflating pressure like this, completes 1.1U st, 1.2U st, 1.3U st, 1.4U- st, 1.5U st, 1.6U st, 1.7U st, 1.8U sttest figure under eight power frequency applied voltages; Based on these experimental study data, researchist is according to various SF under eight kinds of trial voltages 6the data message that the light signal of decomposition gas content and gas production rate, ultra-high frequency signal, fluorescence optical fiber obtains extracts the characteristic quantity characterizing PD intensity, research SF 6the mechanism that gas PD decomposes;
Test experience three, pulse current detects: adopt the multiple process in IEC60270 method to measure PD pulse voltage signal, by in parallel for indoor to a shelf depreciation prover and described gas discharge artificial insulation defect, the known pulse signal of discharge capacity is produced at insulation defect the two poles of the earth by described shelf depreciation prover, the crest value of impulse voltage U at described detection resistance two ends can be recorded by the described digital storage oscilloscope connected, and pulse voltage amplitude U and Apparent discharge magnitude Q is linear, therefore the crest value of impulse voltage U recorded according to pulse current method calculates Apparent discharge magnitude Q,
Test experience four, uhf sensor detects: to be fixed by uhf sensor before with pressure regulator pressurization external just to the position of insulation defect, by uhf sensor at digital storage oscilloscope record ground unrest, understand experimental situation noise level, then in the continuous P D process of the test of 96h, during every 11 ~ 12h, digital storage oscilloscope is accessed ultra-high frequency signal, carry out the PD signals collecting of power frequency period, arranging oscillographic sample frequency is 50MS/s, temporal resolution is 2ms/div, sampling number is 1M, i.e. 20ms time span, researchist rule of thumb judge described in digital oscilloscope on local discharge signal stablize time, start to gather lower 2500 the power frequency period discharge waveform data of each trial voltage, and the cable simultaneously by capacitive divider is drawn accesses the phase information of the acquisition power frequency reference voltage in oscillograph,
Test experience five, fluorescent optical fiber sensor detects: in the continuous P D process of the test of 96h, during every 11 ~ 12h, digital storage oscilloscope is accessed fluorescence optical fiber collection, arranging oscillographic sample frequency is 50MS/s, temporal resolution is 2ms/div, sampling number is 1M, i.e. 20ms time span, start to gather lower 2500 the power frequency period discharge waveform data of each trial voltage, and the cable simultaneously by capacitive divider is drawn accesses the phase information of the acquisition power frequency reference voltage in oscillograph;
Test experience six, the collection of discharge gas and detection: in the continuous P D process of the test of 96h, after electric discharge 12h, applied voltage is reduced to 0 and the connection of cutting-off pressure-regulating control desk input end and 220V/50Hz civil power, uses ground rod to all devices high-pressure side ground connection electric discharge in whole test unit; Then sampler bag to be connected on thief hatch and conducting sampling ball valve, to carry out the collection of a discharge gas, after completing, close sampling ball valve; Then regulation voltage rises to next trial voltage value and proceeds PD test, carries out a discharge gas collection more and so forth after 12h.
2. a kind of gas insulated electric apparatus shelf depreciation multisensor joint-detection experimental technique according to claim 1, it is characterized in that, in described test experience six, gas chromatograph-mass spectrometer is adopted to be that Shimadzu GC/MS-QP2010Ultra carries out qualitative and quantitative analysis to each discharge gas gathered, , gas composition is 8um by thickness, and internal diameter is 0.32mm, and length is the special capillary column separation of 60m, is detected by MSD detecting device, this method adopts high-purity He of 99.999% as carrier gas, condition of work is: post case temperature mode is that constant temperature 35 DEG C keeps 7.5min, 10min is kept with the ramp to 105 of 70 DEG C/min DEG C, 3.5min is kept with the ramp to 250 of 100 DEG C/min DEG C, injector temperature is 220 DEG C, pressure flow hybrid control mode, pressure is 55kPa, total flow is 16.3mL/min, post flow is 1.21mL/min, linear velocity is 28cm/sec, purge flow rate is 3mL/min, split ratio is 10, ion source temperature is 200 DEG C, chromatographic mass spectrometry interface temperature is 220 DEG C, the solvent delay time is 0min, micro scanning width 0u, detector voltage 0kV, ionization mode is electricity bombardment ionization, acquisition mode is SIM quantitative test, sweep interval 0.3s, the method can realize SF 6decomposition components CF under PD 4, CO 2, SO 2f 2, SOF 2, H 2s, SO 2, CS 2etc. multiple gases effective separation and detect its concentration,
The gas sample that sampling obtains by through decompression, high pressure carrier gas (adopting helium herein) after purified treatment with flowing into chromatographic column thus realizing effective separation of different component, by selecting suitable detecting device, the electric signal of reactive component content can be obtained in terminal; The effect of detecting device gas composition content accounting is converted to electric signal to export, and to export and the examining report shown is called as chromatogram through data processing stations; Obviously, the peak area size of chromatogram is detecting device and exports electric signal size, relation proportional with component concentration; Meanwhile, by the chromatographic system of similarity condition, the same substance retention time in a detector of variable concentrations is constant, therefore can detect its retention time of calibrating gas of tested product in advance, utilize following formula to carry out quantitatively calibrating to tested product:
c i c s = A i A s = K i A i
Wherein, c sand c irepresent respectively survey the concentration of i-th kind of gas composition and gas thereof, A sand A ithen be respectively chromatographic peak area, K ifor the Absolute Calibration factor.
3. a kind of gas insulated electric apparatus shelf depreciation multisensor joint-detection experimental technique according to claim 1, it is characterized in that, the concrete operations of the artificial insulation defect model of described placement and device dust removal process are: first, schematic diagram according to hookup accurately connects each device, successively ground connection is carried out to all testing equipments, guarantee the electrical security tested; Open the spherical top cover of the stainless steel cylindrical cavities of the gas discharge chamber in test unit, ethanol liquid is adopted to carry out cleaning wiping to the inwall of stainless steel cavity and artificial defect model, impurity dust on removal device, artificial defect two ends are twisted with high-low pressure guide rod respectively and is connected together, then dome cap seal is installed; Guarantee that impurity dust can not produce disturbing effect to whole test.
4. a kind of gas insulated electric apparatus shelf depreciation multisensor joint-detection experimental technique according to claim 1, it is characterized in that, the bubble-tight concrete operations of described check test device are: first, open the vacuum pump that test unit outreaches, bled by the inflation inlet of stainless steel cavity, observe vacuum meter, Vacuum ball valve during pointed 0 ~ 0.01MPa on pressure vacuum gauge on stopping device and vacuum pump, mark on pointer gauge with marking pen, observe mark on pressure vacuum gauge after static 24 hours whether to change, if above-mentioned pressure vacuum gauge registration still remains on 0 ~ 0.015MPa and mark is almost unchanged, under then confirming this device vacuum state, impermeability is good, open the SF purchased 6the valve of gas cylinder and the air inlet ball valve of gas discharge chamber, manual adjustments air valve at the uniform velocity injects SF in stainless steel cavity 6gas, on observation Vacuum-Volts table, air pressure pointer is to 0.4 ~ 0.5MPa, and marks on table with marking pen, closes above-mentioned SF successively 6the valve of gas cylinder and air inlet ball valve, standing pressure vacuum gauge of observing after 24 hours still refers at 0.4 ~ 0.5MPa when pointer and marks almost unchanged, shows that described gas discharge chamber's air pressure seal performance is intact, finally guarantees the security of gas test.
5. a kind of gas insulated electric apparatus shelf depreciation multisensor joint-detection experimental technique according to claim 1, it is characterized in that, the concrete operations of employing purge of gas stainless steel cavity are: first, connect vacuum pump outward, by the vacuum pump ball valve opened, process is vacuumized to above-mentioned stainless steel cavity, when the vacuum tightness of the instruction on pressure vacuum gauge is 0 ~ 0.01MPa, close above-mentioned vacuum pump ball valve and vacuum pump successively; Then SF is connected outside 6gas cylinder, injects SF by gas cylinder air valve and sample introduction ball valve to above-mentioned stainless steel cavity 6gas, rises within the scope of 0.3 ~ 0.4MPa by described stainless steel cavity internal gas pressure value, cleans described stainless steel cavity, leaves standstill the SF that 4 ~ 6h makes attachment in the previous test of stainless steel cavity 6the decomposition gas of gas and moisture fully gasify release; Then above-mentioned vacuumizing and inject SF is repeated 6gas process, thus to ensure in stainless steel cavity that foreign gas and inherent moisture content drop to can not influential degree to test findings.
6. a kind of gas insulated electric apparatus shelf depreciation multisensor joint-detection experimental technique according to claim 1, is characterized in that, adopts SF 6the concrete operations of gas inflated are: first, connect SF outward 6gas cylinder, injects SF by the valve of gas cylinder and air inlet ball valve to described stainless steel cavity 6gas, till gaseous tension list index is stabilized in 0.4MPa, then closes described SF successively 6the valve of gas cylinder and air inlet ball valve; Leave standstill and make SF in 4 ~ 6h hour 6be dispersed in gas discharge indoor.
CN201511016379.6A 2015-12-29 2015-12-29 A kind of gas insulated electric apparatus shelf depreciation multi-source associated detecting method Active CN105388406B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201511016379.6A CN105388406B (en) 2015-12-29 2015-12-29 A kind of gas insulated electric apparatus shelf depreciation multi-source associated detecting method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201511016379.6A CN105388406B (en) 2015-12-29 2015-12-29 A kind of gas insulated electric apparatus shelf depreciation multi-source associated detecting method

Publications (2)

Publication Number Publication Date
CN105388406A true CN105388406A (en) 2016-03-09
CN105388406B CN105388406B (en) 2018-04-20

Family

ID=55420901

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201511016379.6A Active CN105388406B (en) 2015-12-29 2015-12-29 A kind of gas insulated electric apparatus shelf depreciation multi-source associated detecting method

Country Status (1)

Country Link
CN (1) CN105388406B (en)

Cited By (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106154131A (en) * 2016-08-23 2016-11-23 莱芜鲁能开源电力建设有限公司 A kind of detection method for GIS device
CN106249118A (en) * 2016-09-20 2016-12-21 国网天津市电力公司 Based on GIS device superfrequency partial discharge detecting system under surge voltage
CN106546887A (en) * 2016-11-04 2017-03-29 国网山东省电力公司电力科学研究院 A kind of SF6Decompose simulating experimental system and its emulation experiment method
CN106569107A (en) * 2016-11-02 2017-04-19 国网江西省电力公司电力科学研究院 Partial discharge determining method combining sulfur hexafluoride centralized analysis and ultrahigh frequency
CN106569105A (en) * 2016-10-31 2017-04-19 国家电网公司 GIS partial discharge optical ultrahigh frequency combined detection method
CN107015132A (en) * 2017-05-31 2017-08-04 国网电力科学研究院武汉南瑞有限责任公司 A kind of different metal material is to SF6Exchange influence experimental provision and its method that PD is decomposed
CN107045095A (en) * 2017-02-07 2017-08-15 西安交通大学 A kind of optical fiber superfrequency compound sensor and GIS partial discharge detection means
CN107728029A (en) * 2017-11-10 2018-02-23 深圳供电局有限公司 A kind of sensor material and insulating gas compatibility test system and relevant test method
CN108112152A (en) * 2017-12-20 2018-06-01 国网陕西省电力公司电力科学研究院 Volume discharge generation device and its method in a kind of temperature control water
CN108152393A (en) * 2017-12-08 2018-06-12 国网陕西省电力公司电力科学研究院 The detection method of carbon tetrafluoride in 1100kV wave filter column type circuit breakers
CN108181576A (en) * 2017-12-08 2018-06-19 国网陕西省电力公司电力科学研究院 The determining method of 1100kV wave filters column type circuit breaker connecting-disconnecting function
CN108362827A (en) * 2018-01-09 2018-08-03 国网山东省电力公司滨州供电公司 A kind of detection device for testing substation SF6 working sensor states
CN108445359A (en) * 2018-03-26 2018-08-24 海南电网有限责任公司电力科学研究院 A kind of detection method of SF6 in free metal insulation defect shelf depreciation
CN109061062A (en) * 2018-08-03 2018-12-21 扬中市南方矿用电器有限公司 A kind of sulphur dioxide measuring device and measuring method
CN109085475A (en) * 2018-09-14 2018-12-25 北京鼎诚恒安科技发展有限责任公司 The detection method and device of high-tension switch cabinet shelf depreciation
CN109406961A (en) * 2018-10-26 2019-03-01 华北电力大学 A kind of power electronic devices insulation test device
CN109682906A (en) * 2019-01-10 2019-04-26 宁波大学 A kind of gas-chromatography-low temperature plasma ion-source mass spectrometer combined apparatus
CN110095555A (en) * 2019-04-26 2019-08-06 海南电网有限责任公司电力科学研究院 One kind is based on analysis SF6Chromatographic detection system and detection method
CN110108993A (en) * 2019-05-31 2019-08-09 国网青海省电力公司检修公司 A kind of multiband three-dimensional joint test method for power equipment shelf depreciation
CN110196382A (en) * 2019-07-05 2019-09-03 杭州西湖电子研究所 A kind of no check frequency oscillation wave partial discharge detection device
CN110361638A (en) * 2019-07-30 2019-10-22 国家电网公司华中分部 Study the pilot system and its method that gas diffusion characteristic is decomposed in GIL
CN110806554A (en) * 2019-11-11 2020-02-18 广西电网有限责任公司桂林供电局 Calibration method of PVC cable gas detector
CN110940901A (en) * 2019-12-06 2020-03-31 西安锐驰电器有限公司 Method for detecting insulating capability of electrical equipment
CN111880054A (en) * 2020-07-08 2020-11-03 国网电力科学研究院武汉南瑞有限责任公司 Transformer oil paper insulation long-time electric heating combined aging experimental device and method
CN112198397A (en) * 2020-08-17 2021-01-08 国网浙江省电力有限公司电力科学研究院 GIS basin-type insulator partial discharge chromatographic diagnosis method
CN112345901A (en) * 2020-09-30 2021-02-09 江苏省如高高压电器有限公司 Partial discharge test method for insulating part for high-voltage switch
CN112595937A (en) * 2020-11-20 2021-04-02 沈阳达能电安全高新产业技术研究院有限公司 Cable partial discharge measuring device based on balance method
CN112748274A (en) * 2019-10-31 2021-05-04 西安西电高压开关有限责任公司 Current measuring device
CN113092958A (en) * 2021-03-18 2021-07-09 武汉大学 Gas discharge comprehensive experiment platform
CN113109675A (en) * 2021-04-12 2021-07-13 西北核技术研究所 Image diagnosis device and method for insulation stack vacuum surface flashover
CN113406489A (en) * 2021-06-18 2021-09-17 国网宁夏电力有限公司培训中心 Experimental system device and method for simulating real GIS three-station switch suspension potential
CN113745050A (en) * 2021-08-31 2021-12-03 西安交通大学 Vacuum degree on-line monitoring device and method
CN113985233A (en) * 2021-11-09 2022-01-28 国网河南省电力公司济源供电公司 GIS basin-type insulator partial discharge chromatographic diagnosis method
CN117031181A (en) * 2023-10-09 2023-11-10 国网山东省电力公司菏泽供电公司 Sensor fitting judgment system, method and detection device based on current measurement

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101059485A (en) * 2007-05-23 2007-10-24 重庆大学 Sulfur hexafluoride discharge decomposed gas component analysis system and its usage method
US7872465B2 (en) * 2005-06-30 2011-01-18 The Boeing Company Apparatus and methods for evaluating material volatility
CN102034019A (en) * 2010-10-12 2011-04-27 重庆大学 Method for comprehensively estimating insulation state of sulfur hexafluoride electrical equipment
CN102495319A (en) * 2011-12-21 2012-06-13 重庆大学 Simulated experiment method of overheat faults of contact surface in sulfur hexafluoride gas insulation equipment
CN102608505A (en) * 2012-03-30 2012-07-25 重庆大学 Multi-region detection system for partial discharge decomposition components of insulating gas and method thereof
CN103592582A (en) * 2013-11-07 2014-02-19 国家电网公司 Sulfur hexafluoride decomposition experiment system
CN104375071A (en) * 2014-12-01 2015-02-25 武汉大学 Decomposition simulation experiment method for sulfur hexafluoride gas insulating medium electro-thermo combination
CN204462312U (en) * 2014-12-18 2015-07-08 广东电网有限责任公司电力科学研究院 GIS partial discharge SF under a kind of surge voltage 6decomposition components analysis mode test unit

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7872465B2 (en) * 2005-06-30 2011-01-18 The Boeing Company Apparatus and methods for evaluating material volatility
CN101059485A (en) * 2007-05-23 2007-10-24 重庆大学 Sulfur hexafluoride discharge decomposed gas component analysis system and its usage method
CN102034019A (en) * 2010-10-12 2011-04-27 重庆大学 Method for comprehensively estimating insulation state of sulfur hexafluoride electrical equipment
CN102495319A (en) * 2011-12-21 2012-06-13 重庆大学 Simulated experiment method of overheat faults of contact surface in sulfur hexafluoride gas insulation equipment
CN102608505A (en) * 2012-03-30 2012-07-25 重庆大学 Multi-region detection system for partial discharge decomposition components of insulating gas and method thereof
CN103592582A (en) * 2013-11-07 2014-02-19 国家电网公司 Sulfur hexafluoride decomposition experiment system
CN104375071A (en) * 2014-12-01 2015-02-25 武汉大学 Decomposition simulation experiment method for sulfur hexafluoride gas insulating medium electro-thermo combination
CN204462312U (en) * 2014-12-18 2015-07-08 广东电网有限责任公司电力科学研究院 GIS partial discharge SF under a kind of surge voltage 6decomposition components analysis mode test unit

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
唐炬等: "SF6气体过热性分解模拟实验装置的研制", 《高电压技术》 *
唐炬等: "微H2O对过热故障下SF6分解特性的影响及校正", 《中国电机工程学报》 *
唐炬等: "电极材料对SF6局放分解特征组分生成的影响", 《高电压技术》 *

Cited By (45)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106154131A (en) * 2016-08-23 2016-11-23 莱芜鲁能开源电力建设有限公司 A kind of detection method for GIS device
CN106249118A (en) * 2016-09-20 2016-12-21 国网天津市电力公司 Based on GIS device superfrequency partial discharge detecting system under surge voltage
CN106569105A (en) * 2016-10-31 2017-04-19 国家电网公司 GIS partial discharge optical ultrahigh frequency combined detection method
CN106569105B (en) * 2016-10-31 2019-07-26 国家电网公司 A kind of GIS partial discharge optics superfrequency associated detecting method
CN106569107B (en) * 2016-11-02 2019-04-23 国网江西省电力公司电力科学研究院 A kind of sulfur hexafluoride concentrates the method for analyzing and judging in conjunction with superfrequency partial discharge
CN106569107A (en) * 2016-11-02 2017-04-19 国网江西省电力公司电力科学研究院 Partial discharge determining method combining sulfur hexafluoride centralized analysis and ultrahigh frequency
CN106546887A (en) * 2016-11-04 2017-03-29 国网山东省电力公司电力科学研究院 A kind of SF6Decompose simulating experimental system and its emulation experiment method
CN107045095A (en) * 2017-02-07 2017-08-15 西安交通大学 A kind of optical fiber superfrequency compound sensor and GIS partial discharge detection means
CN107015132A (en) * 2017-05-31 2017-08-04 国网电力科学研究院武汉南瑞有限责任公司 A kind of different metal material is to SF6Exchange influence experimental provision and its method that PD is decomposed
CN107728029A (en) * 2017-11-10 2018-02-23 深圳供电局有限公司 A kind of sensor material and insulating gas compatibility test system and relevant test method
CN107728029B (en) * 2017-11-10 2024-03-29 深圳供电局有限公司 Sensor material and insulating gas compatibility test system and related test method
CN108152393A (en) * 2017-12-08 2018-06-12 国网陕西省电力公司电力科学研究院 The detection method of carbon tetrafluoride in 1100kV wave filter column type circuit breakers
CN108181576A (en) * 2017-12-08 2018-06-19 国网陕西省电力公司电力科学研究院 The determining method of 1100kV wave filters column type circuit breaker connecting-disconnecting function
CN108112152A (en) * 2017-12-20 2018-06-01 国网陕西省电力公司电力科学研究院 Volume discharge generation device and its method in a kind of temperature control water
CN108362827A (en) * 2018-01-09 2018-08-03 国网山东省电力公司滨州供电公司 A kind of detection device for testing substation SF6 working sensor states
CN108445359A (en) * 2018-03-26 2018-08-24 海南电网有限责任公司电力科学研究院 A kind of detection method of SF6 in free metal insulation defect shelf depreciation
CN109061062A (en) * 2018-08-03 2018-12-21 扬中市南方矿用电器有限公司 A kind of sulphur dioxide measuring device and measuring method
CN109085475A (en) * 2018-09-14 2018-12-25 北京鼎诚恒安科技发展有限责任公司 The detection method and device of high-tension switch cabinet shelf depreciation
CN109406961A (en) * 2018-10-26 2019-03-01 华北电力大学 A kind of power electronic devices insulation test device
CN109682906A (en) * 2019-01-10 2019-04-26 宁波大学 A kind of gas-chromatography-low temperature plasma ion-source mass spectrometer combined apparatus
CN109682906B (en) * 2019-01-10 2023-12-12 宁波大学 Gas chromatography-low temperature plasma ion source mass spectrometer combined device
CN110095555B (en) * 2019-04-26 2021-02-26 海南电网有限责任公司电力科学研究院 SF based on analysis6Chromatographic detection system and detection method
CN110095555A (en) * 2019-04-26 2019-08-06 海南电网有限责任公司电力科学研究院 One kind is based on analysis SF6Chromatographic detection system and detection method
CN110108993A (en) * 2019-05-31 2019-08-09 国网青海省电力公司检修公司 A kind of multiband three-dimensional joint test method for power equipment shelf depreciation
CN110108993B (en) * 2019-05-31 2021-05-07 国网青海省电力公司检修公司 Multi-frequency-band three-dimensional combined test method for partial discharge of power equipment
CN110196382A (en) * 2019-07-05 2019-09-03 杭州西湖电子研究所 A kind of no check frequency oscillation wave partial discharge detection device
CN110196382B (en) * 2019-07-05 2023-12-22 杭州西湖电子研究所 No detection blind area oscillatory wave partial discharge detection device
CN110361638A (en) * 2019-07-30 2019-10-22 国家电网公司华中分部 Study the pilot system and its method that gas diffusion characteristic is decomposed in GIL
CN112748274A (en) * 2019-10-31 2021-05-04 西安西电高压开关有限责任公司 Current measuring device
CN112748274B (en) * 2019-10-31 2023-05-16 西安西电高压开关有限责任公司 Current measuring device
CN110806554A (en) * 2019-11-11 2020-02-18 广西电网有限责任公司桂林供电局 Calibration method of PVC cable gas detector
CN110806554B (en) * 2019-11-11 2021-08-13 广西电网有限责任公司桂林供电局 Calibration method of PVC cable gas detector
CN110940901A (en) * 2019-12-06 2020-03-31 西安锐驰电器有限公司 Method for detecting insulating capability of electrical equipment
CN111880054A (en) * 2020-07-08 2020-11-03 国网电力科学研究院武汉南瑞有限责任公司 Transformer oil paper insulation long-time electric heating combined aging experimental device and method
CN112198397A (en) * 2020-08-17 2021-01-08 国网浙江省电力有限公司电力科学研究院 GIS basin-type insulator partial discharge chromatographic diagnosis method
CN112198397B (en) * 2020-08-17 2022-11-29 国网浙江省电力有限公司电力科学研究院 GIS basin-type insulator partial discharge chromatographic diagnosis method
CN112345901A (en) * 2020-09-30 2021-02-09 江苏省如高高压电器有限公司 Partial discharge test method for insulating part for high-voltage switch
CN112595937A (en) * 2020-11-20 2021-04-02 沈阳达能电安全高新产业技术研究院有限公司 Cable partial discharge measuring device based on balance method
CN113092958A (en) * 2021-03-18 2021-07-09 武汉大学 Gas discharge comprehensive experiment platform
CN113109675A (en) * 2021-04-12 2021-07-13 西北核技术研究所 Image diagnosis device and method for insulation stack vacuum surface flashover
CN113406489A (en) * 2021-06-18 2021-09-17 国网宁夏电力有限公司培训中心 Experimental system device and method for simulating real GIS three-station switch suspension potential
CN113745050A (en) * 2021-08-31 2021-12-03 西安交通大学 Vacuum degree on-line monitoring device and method
CN113985233A (en) * 2021-11-09 2022-01-28 国网河南省电力公司济源供电公司 GIS basin-type insulator partial discharge chromatographic diagnosis method
CN117031181A (en) * 2023-10-09 2023-11-10 国网山东省电力公司菏泽供电公司 Sensor fitting judgment system, method and detection device based on current measurement
CN117031181B (en) * 2023-10-09 2024-01-09 国网山东省电力公司菏泽供电公司 Sensor fitting judgment system, method and detection device based on current measurement

Also Published As

Publication number Publication date
CN105388406B (en) 2018-04-20

Similar Documents

Publication Publication Date Title
CN105388406A (en) Gas insulated electric equipment partial discharge multi-source joint detection method
CN105629139B (en) A kind of gas insulated electric apparatus shelf depreciation multi-source combined monitoring experimental provision
CN102435919B (en) Tester for testing SF6 gas discharge decomposition product characteristics
CN103913682B (en) Be applied to insulating gas insulating property experimental system and the method thereof of electrical equipment
CN103105568B (en) Aging and the local discharge integrated experimental provision of transformer oil paper insulated electrothermic associating
CN105548823A (en) Partial discharge decomposition simulation experiment method of direct current gas insulation electrical device
CN102608505B (en) Multi-region detection system for partial discharge decomposition components of insulating gas and method thereof
CN105301465A (en) Direct current gas insulation electrical equipment partial discharge decomposition simulation experiment apparatus
CN204462312U (en) GIS partial discharge SF under a kind of surge voltage 6decomposition components analysis mode test unit
CN203811754U (en) An enclosed type gas insulation combined electric appliance partial discharge detection device
JP5530966B2 (en) Method and apparatus for testing insulation performance of gas insulation equipment
CN103344735A (en) Method for positioning discharging fault in gas insulated switchgear (GIS)
CN103675623A (en) Method and system for detecting partial discharging of GIS under impulse voltage
CN105223478A (en) Based on the GIS partial discharge live detection test unit of defects simulation
CN103513132B (en) Power transmission and transformation system equipment state simulator
CN109580774B (en) Equipment and method for detecting withstand voltage breakdown characteristic of insulating substitute gas
CN203811751U (en) Power equipment partial discharge experimental system based on comparison fitting analysis
CN110361638A (en) Study the pilot system and its method that gas diffusion characteristic is decomposed in GIL
CN203191508U (en) GIS partial-discharge detection test platform based on transient-earthing radio waves
CN113325276A (en) GIS epoxy insulation surface defect partial discharge detection method and device
CN106997023A (en) A kind of different metal material is to SF6Influence experimental provision and its method that local paroxysmal discharges failure is decomposed
CN108445359A (en) A kind of detection method of SF6 in free metal insulation defect shelf depreciation
CN106771908A (en) Disc insulator rift defect climbs electro-detection sensor
CN110286271A (en) A kind of measuring system, method and the analysis method of dielectric surface charge properties
CN217521298U (en) Partial discharge measuring equipment and device of GIS insulating pull rod

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant