CN106771929A - A kind of GIS device cancels the condition test method of the customary experiment that has a power failure - Google Patents
A kind of GIS device cancels the condition test method of the customary experiment that has a power failure Download PDFInfo
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- CN106771929A CN106771929A CN201710025812.5A CN201710025812A CN106771929A CN 106771929 A CN106771929 A CN 106771929A CN 201710025812 A CN201710025812 A CN 201710025812A CN 106771929 A CN106771929 A CN 106771929A
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- 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
- G01R31/1209—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 using acoustic measurements
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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- 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
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- 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
- G01R31/01—Subjecting similar articles in turn to test, e.g. "go/no-go" tests in mass production; Testing objects at points as they pass through a testing station
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1218—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 using optical methods; using charged particle, e.g. electron, beams or X-rays
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—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
- G01R31/1245—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 line insulators or spacers, e.g. ceramic overhead line cap insulators; of insulators in HV bushings
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—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
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- 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
- G01R31/1263—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 solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
- G01R31/1281—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 solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of liquids or gases
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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- G01N2223/03—Investigating materials by wave or particle radiation by transmission
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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Abstract
The present invention provides a kind of condition test method that GIS device cancels the customary experiment that has a power failure, and is carried out by below scheme：(1) carry out non-power failure routine test according to cycle request, if by result of the test, can accurately grasp equipment state, then directly formulate corresponding Strategies of Maintenance；(2) if needing further analytical equipment state, according to the analysis of non-power failure routine test result and relevant device information, non-power failure diagnostic test is pointedly carried out；(3) according to non-power failure routine test and diagnostic test comprehensive assessment result, corresponding Strategies of Maintenance is formulated.The present invention carries out live detection using various non-power failure pilot projects to GIS device, with obtain status information of equipment amount comprehensively, to the major defect failure effectively outstanding advantages such as covering, avoid the existing problems patrolled and examined and exist with routine test project, can under not power-off condition in real time, accurately, easily grasp GIS device operation conditions, formulate corresponding Strategies of Maintenance, it is ensured that equipment safety reliability service.
Description
Technical field
The present invention relates to electrical device status detection technique field, specifically a kind of GIS device cancels the customary experiment that has a power failure
Condition test method.
Background technology
Grid company comes into effect Maintenance Mode in recent years, based on equipment state evaluation, strengthens equipment state
Detection, science formulates repair schedule, and service work emphasis slave unit interruption maintenance is transferred to detection, analysis to equipment state
With evaluate, pre-control, the equipment of drastically reduce the area cross repair, it is in bad repair, maintenance workload is decreased obviously, reduce overhaul of the equipments, experiment
Cost, equipment dependability is significantly improved.But due to the limitation of technology, repair based on condition of component is still present the power failure routine test cycle.
With continuing to develop for need for electricity and power equipment manufacturing technology, power equipment voltage class more and more higher is held
Also increasing, the continuous enlargement of power network scale is measured, corresponding power equipment separate unit cost constantly rises, and the major tune-up time is not
Break and extend, every cost such as manpower and materials is also progressively given and added, and this will with the power grid operation of reduction power off time, reduction maintenance cost
Ask and operation maintenance personnel is reduced etc. between present situation contradiction is continued to increase.To solve this problem, on-line monitoring should further be developed
With live detection to substitute the customary experiment that has a power failure, the Maintenance Mode based on the non-experiment that has a power failure is ultimately formed.
GIS device is one of main most important equipment of power equipment, is to carry out one of equipment of repair based on condition of component earliest.
GIS device mainly has a ten class defect failures, including metal tip electric discharge, the electric discharge of free metal particle, insulating surface defect (including
The insulating parts such as disc insulator, insulated tension pole, supports insulative are filthy along face), insulating inner defect (including disc insulator,
The insulating part inner cavities such as insulated tension pole, supports insulative), floating potential discharge defect (internal part loosening), mechanical oscillation
Defect (internal part loosening etc.), body damaged (cracking, gas leakage), heating, operating mechanism, transmission mechanism defect etc..
At present, GIS device is patrolled and examined includes with routine test project：Visual examination, gas density value are checked, operating mechanism shape
State inspection, IR thermal imaging inspection, component test etc., they obtain status information of equipment amount is limited, information delay, part test
Project needs to have a power failure could carry out, and have impact on power supply reliability, and be difficult to meet the requirement of state evaluation and state management and control.
In the case where not having a power failure, existing customary pilot project (IR thermal imaging inspection, the detection of SF6 gas humidities, hyperfrequency
Partial Discharge Detection, ultrasonic wave Partial Discharge Detection) can only find that heating class defect, SF6 measurement of moisture content of gas be exceeded, partial discharge class
The hidden danger type such as defect, can not find other hidden danger types such as mechanical defect, and pilot project is more single, far from right
GIS device major defect failure accomplishes effective covering, it is difficult to grasp GIS device operation conditions comprehensively.Accordingly, it would be desirable to expand examination
Test project category.
The present inventor realize it is of the invention during by study find：Live detection technology (infrared imaging detection, purple
Outer image checking, SF6 gas decomposition products, purity detecting, the detection of SF6 gas humidities, SF6 Leakage inspections, ultrasonic wave office
Portion's discharge examination, ultra high frequency PD detection, the detection of X-ray digital imagery, mechanical property state-detection) GIS can be set
Standby major defect failure accomplishes all standing of relative efficiency.
The content of the invention
The technical problems to be solved by the invention are thoroughly to solve status information of equipment present in GIS device detection method
Measure limited, information delay, the problems such as defect failure coverage rate is small, there is provided a kind of GIS device cancels the state of the customary experiment that has a power failure
Test method, it is significant to forming the Maintenance Mode based on the non-experiment that has a power failure.
To achieve these goals, the technical solution adopted by the present invention is as follows：
A kind of GIS device cancels the condition test method of the customary experiment that has a power failure, it is characterised in that：GIS device is cancelled customary
The non-power failure testing inspection project that have a power failure is carried out needed for testing is divided into non-power failure routine test and diagnostic test, the non-power failure example
Row experiment includes IR thermal imaging inspection, ultraviolet detection, ultra high frequency PD detection, ultrasonic wave Partial Discharge Detection, SF6 gases
Humidity Detection, SF6 gases decompose analyte detection；The non-power failure diagnostic test includes the detection of SF6 gas purities, the leakage of SF6 gases
Detection, the detection of X-ray digital imagery, mechanical performance state-detection, mechanical oscillation detection；The state maintenance method presses to flow down
Cheng Jinhang：
(1) non-power failure routine test is carried out according to cycle request, if by result of the test, can accurately grasp equipment shape
State, then directly formulate corresponding Strategies of Maintenance；If needing further analytical equipment state, carrying on non-power failure diagnostic test is carried out
Comprehensive assessment；
(2) if suspecting there is problem in SF6 gaseous masses, or when coordinating crash analysis, optionally carry out SF6 gases
Purity detecting；
If gas pressure reduction, tonifying Qi interval were less than 2 years, after the completion of tonifying Qi, when air density meter display density decline
Or during qualitative detection discovery gas leakage, carry out SF6 Leakage inspections；
If decomposing analyte detection by ultrasonic wave, ultra high frequency PD detection or SF6 gases to note abnormalities, and suspect that this lacks
Fall into the foreign matter class defect being scattered for instrument, assembly parts, drier, screw is not tightened, radome loosens, disconnecting switch close a floodgate less than
Metallic particles, supports insulative that position, disconnecting switch separating brake assembling class defect not in place and proximate contacts inside cavity are scattered
The material class defect that air entrapment, operation insulating bar are released, is carried out visually using the detection of X-ray digital imagery to GIS device
Change Non-Destructive Testing, comprehensive analysis and judgement；
If suspecting there is mechanical performance defect in GIS device breaker, can carry out divide-shut brake coil current, energy storage motor electric current
Mechanical performance state-detection；
If suspecting there is the mechanical breakdown or defect of latency in GIS device breaker, can carry out ultrasound examination, based on shaking
The mechanical oscillation detection of dynamic signal.
(3) according to non-power failure routine test and diagnostic test comprehensive assessment result, corresponding Strategies of Maintenance is formulated.
Further, the Strategies of Maintenance in the step (3) is divided into and carries out non-power failure routine test by normal cycle, shortens
The live detection cycle strengthens tracking, three kinds of interruption maintenance.
Further, if Strategies of Maintenance is interruption maintenance, major loop insulaion resistance, major loop resistance are carried out as needed
Corresponding overhaul plan is carried out after the experiments that have a power failure such as measurement, the experiment of major loop ac voltage withstanding, gas tightness detection.
The beneficial effects of the invention are as follows obvious, live detection is carried out to GIS device using various non-power failure pilot projects,
With obtain status information of equipment amount comprehensively, to the major defect failure effectively outstanding advantages such as covering, it is to avoid it is existing patrol and examine and
The problems that routine test project is present, can in real time, accurately, easily grasp GIS device operation under not power-off condition
Situation, formulates corresponding Strategies of Maintenance, it is ensured that equipment safety reliability service.
Brief description of the drawings
Fig. 1 is the flow of the one of embodiment of condition test method that GIS device of the present invention cancels the customary experiment that has a power failure
Schematic diagram.
Specific embodiment
Below in conjunction with the accompanying drawing in the present invention, the technical scheme in the present invention is clearly and completely described.
Fig. 1 show GIS device of the present invention and cancels the customary one of embodiment of condition test method for having a power failure and testing
Schematic flow sheet, the GIS device cancels the non-power failure testing inspection that the customary condition test method for having a power failure experiment need to be carried out
Mesh is divided into non-power failure routine test and diagnostic test.
The non-power failure routine test refers to the regular various live detections that carry out, including IR thermal imaging inspection, ultraviolet inspection
Survey, ultra high frequency PD detection, ultrasonic wave Partial Discharge Detection, the detection of SF6 gas humidities, SF6 gases decompose analyte detection；Institute
State non-power failure diagnostic test refer to patrol and examine, monitor on-line, the discovering device state such as non-power failure routine test it is bad, or be subjected to not
Skilled worker's condition, or by family's defect warning, or the long period continuously has been run, it is the band electric-examination that further assessment equipment state is carried out
Survey, including the detection of SF6 gas purities, the detection of SF6 Leakage inspections, X-ray digital imagery, mechanical performance state-detection, machine
Tool vibration detection.
The GIS device cancels the state maintenance method of the customary experiment that has a power failure, and condition test is carried out by below scheme：
1) non-power failure routine test is carried out according to the detection cycle and technical requirements of the non-power failure routine test of table 1.If passing through
Result of the test, can accurately grasp equipment state, then directly formulate corresponding Strategies of Maintenance.
The non-power failure routine tests of the GIS of table 1
(1) infrared imaging detection
A, configuration Intelligent robot inspection system transformer station's (current conversion station), can by intelligent robot complete infrared general survey and
Accurate thermometric, is checked by professional.
B, detection each unit and into and out of at line electrical connection, Infrared Thermogram show answer temperature rise without exception, the temperature difference and/or
Relative temperature difference.During analysis, it is contemplated that during measurement and preceding 3 hours load currents situation of change.
Can be by detecting that GIS tank bodies reflect internal serious overheat in C, infrared imaging detection.
(2) ultraviolet imagery detection
A, for silicone rubber sleeve, it is proposed that shorten to the 2/3 of detection cycle.
When B, development GIS equipment partial discharge live detection, can be by wireless outside ultraviolet imagery detection GIS device
Electrical interference source, with exclusive PCR, is easy to the comprehensive diagnos of GIS device inside shelf depreciation defect.
(3) ultra high frequency PD detection
A, sensor are placed
A () is applied to nonmetallic flange insulating basin, the insulating basin with metallic shield can be carried out using opening is poured into a mould
Detection, other structures are implemented.
If b () GIS device is equipped with fixed internal or external ultra high-frequency partial discharge sensor, it is possible to use the sensing
Device carries out Partial Discharge Detection.
If c () fixed internal or external sensor device is connected with on-Line Monitor Device, should be periodically multiple by detection cycle
Core partial discharge monitoring data.
If d the insulating basin of () with metallic shield does not have openable sprue gate, and be fitted without the interior of fixation
Put or external ultra high-frequency partial discharge sensor, can be released by the expose insulating part, SF6 gas pressures of observation window, earthed switch
The discontinuous position of the GIS outer cover metals such as window is put to be detected.
E () sensor placement location should be avoided fastening insulating basin bolt, to reduce bolt to internal shielding electromagnetic waves
And the exterior static interference that sensor is produced with bolt.
B, interference source
Should be tried one's best before detection and exclude the interference signal of environment.Differentiation or exclusion in detection to interference signal can be comprehensively utilized
Following three kinds of methods are carried out：
A () detects that collection of illustrative plates compares determination with typical case's interference collection of illustrative plates by superfrequency, interference source, such as mobile phone letter are closed as far as possible
Number.
B () detects environment spectral range using frequency spectrograph, by wave filter filtering interfering source.
C () determines whether interference by positioning signal source.If outside GIS, it may be determined that be electric from other
Partial interference, if inside GIS, it is possible to make abnormity diagnosis.
C, positioning
When carrying out shelf depreciation positioning, first passing through intensity positioning mode carries out coarse localization, then using oscillograph (sampling precision
At least more than 1GHz) etc. carry out time difference method and be accurately positioned, can also be carried out by changing method of operation of electrical equipment if necessary.
D, diagnosis
Superfrequency detection is still without ripe method for quantitatively evaluating.The order of severity of GIS partial discharge defect should be according to putting
The recognition result of electric type and detection characteristic quantity development trend (over time same test point strength of discharge, discharge frequency,
Electric discharge frequency Changing Pattern) comprehensive descision is carried out, should be detected with reference to shelf depreciation ultrasound detection and gas analyte in analysis etc.
Diagnostic test result.Abnormal conditions should shorten detection cycle.
(4) ultrasonic wave Partial Discharge Detection
A, sensor are placed
For GIS device, at breaker fracture, disconnecting switch, earthed switch, current transformer, voltage transformer, keep away
Thunder device, conductor coupling portion part etc. all should set test point.It is general to choose one at interval of 0.5m or so in GIS housings axis direction
Place, measurement point tries one's best selection below compartment sides.For bus air chamber more long, can suitably relax the spacing of test point；Ying Bao
The position consistency of each test point is held, in order to be compared analysis.
The special couplant of uniform application is answered between sensor and measuring point position and suitably applies pressure, to reduce inspection as far as possible
Survey the decay of signal.Sensor should keep geo-stationary with GIS housings during measurement, in accurate measurement using the fixed sensing of binding
The mode of device is carried out.
Interference source differentiation and the method for removing and partial discharge source localization method of ultrasonic wave Partial Discharge Detection refer to hyperfrequency
Partial Discharge Detection.
B, diagnosis
If detecting abnormal signal, can be by other detecting instruments (such as superfrequency partial discharge detection instrument, oscillograph, frequency spectrum point
Analyzer and SF6 analytes detection analysis instrument), phase analysis is carried out to abnormal signal, and judge the type discharged, according to difference
Criterion risk assessment is carried out to GIS.Abnormal conditions should shorten detection cycle.
(5) SF6 gas humidities detection
A, new being put into operation survey once in one month, if close to demand value, should be surveyed again once after half a year；Newly fill (benefit) gas 48 small
When after to 2 weeks planted agent measurement once；When gas pressure is decreased obviously, regular tracking measurement gas humidity is answered.
B, SF6 gas can be sampled from density monitor.After being measured, density monitor is recovered on request, noted
Fastened by torque requirement.
C, humidity measurement results should convert the humidity value under normal atmospheric pressure；Humidity measurement results should be converted to 20 DEG C
Humidity value.
D, treatment advice are as follows：During more than demand value, shorten detection cycle tracing detection；When humidity continues to increase, check
Whether equipment leaks；Humidity continues to increase and during No leakage, it is proposed that adsorbent is recycled and changed to gas.
(6) SF6 gases decompose analyte detection
There is problem, or during matching defect accident analysis, optionally carry out SF6 gas in A, suspection SF6 gaseous masses
Body composition analysis.
B, for operating SF6 equipment, if the impurity composition content exception such as detection SO2 or H2S, should contain with reference to CO, CF4
Amount and other testing results, equipment electrical characteristic, operating condition etc. carry out comprehensive analysis.
C, must be using the A class detecting instruments of Hidden fault can be found.
After D, detection are finished, restorer state to before detecting.Hunted leak with SF6 gas leakage detectors, gas is such as occurred
Leakage, should the treatment of maintenance in time.
If 2) need further analytical equipment state, the detection cycle and technology that the non-power failure diagnostic test of table 2 is pressed in continuation will
Ask development diagnostic test comprehensive assessment.
The non-power failure diagnostic tests of the GIS of table 2
(1) SF6 gas purities detection
Suspect that SF6 gaseous masses have problem, or when coordinating crash analysis, optionally carry out SF6 gas purities
Detection.
(2) SF6 Leakage inspections
Carry out when A, gas pressure reduction.
When B, tonifying Qi interval were less than 2 years, carry out after the completion of tonifying Qi.
C, when air density meter display density decline or qualitative detection find gas leak when, carry out gas tightness inspection
Survey.
(3) X-ray digital imagery detection
A, by ultrasonic wave, ultra high frequency PD detection or SF6 gases decompose analyte detection note abnormalities, and suspect this lack
The foreign matter class defect being scattered for instrument, assembly parts (bolt, nut and pad), drier is fallen into, screw is not tightened, radome pine
What dynamic, disconnecting switch not in place, the assembling class defect that disconnecting switch separating brake is not in place of combined floodgate and proximate contacts inside cavity were scattered
Material class defect that metallic particles (copper metal particle), the sub- air entrapment of supports insulative, operation insulating bar are released etc., it is alternative
Ground carries out visualization Non-Destructive Testing, comprehensive analysis and judgement using X-ray detection technology to GIS device.
In B, X-ray digital imagery detection process, it should be noted that the security protection of personnel.
(4) mechanical performance state-detection
The mechanical performance state inspections such as A, divide-shut brake coil current, energy storage motor electric current, travel-time curve are most
Using on-line monitoring mode.
There is mechanical performance defect in B, suspection GIS device breaker, optionally carry out divide-shut brake coil current, energy storage
Current of electric live detection.
(5) mechanical oscillation detection
A, the mechanical oscillation detection technique based on vibration signal use on-line monitoring mode mostly.
There is the mechanical breakdown or defect (abnormal mechanical oscillation) of latency in B, suspection GIS device breaker, alternative
Carry out ultrasound examination, based on vibration signal mechanical oscillation detection.
3) according to non-power failure routine test and diagnostic test comprehensive assessment result, corresponding Strategies of Maintenance is formulated.Strategies of Maintenance
It is divided into and strengthens tracking, three kinds of interruption maintenance by the non-power failure routine test of normal cycle development, shortening live detection cycle.
If 4) interruption maintenance, can carry out as needed major loop insulaion resistance, major loop resistance measurement, major loop exchange it is resistance to
Corresponding overhaul plan is carried out after the experiments that have a power failure such as pressure experiment, gas tightness detection.
For example, testing staff carries out live detection to certain 220kV GIS, in tri- benzvalene forms of F, G, H of certain interval B phase outlet
Stronger ultrahigh frequency partial discharge signal is measured at insulator, local discharge signal position is carried out using amplitude measure
Primary Location, as a result shows, the abnormal signal amplitude maximum at the G of position.Supercritical ultrasonics technology and SF6 gas composition analysis methods are not surveyed
Measure questionable signal.According to the PRPD spectrograms that superfrequency method is measured, it tentatively being judged, the discharge defect is insulating inner gas
Gap class is discharged.Then partial-discharge ultrahigh-frequency on-line monitoring system is mounted with the insulator that there is doubtful signal, 24 are carried out
Hour monitoring, after being continued for 3 months, it is found that signal is being incrementally increased, and Disintegration overhaul is determined immediately.F, G, H benzvalene form are insulated
Son carries out x-ray detection, pressure-resistant, partial discharge test, and two disc insulators of F, H have all passed through three experiments, and G basins only lead to
Pressure test is crossed, X-ray irradiation finds that mouthful bottom is poured inside it is about 150mm, the diameter about gas of 2mm in the presence of one
Gap, its partial discharge quantity is 2.37nC.Finally defect disc insulator is changed, normal operation after power transmission.
Beneficial effects of the present invention：Live detection is carried out to GIS device using various non-power failure pilot projects, with acquisition
Status information of equipment amount comprehensively, to the major defect failure effectively outstanding advantages such as covering, it is to avoid it is existing to patrol and examine and routine test
Project exist problems, can under not power-off condition in real time, accurately, easily grasp GIS device operation conditions, formulate
Corresponding Strategies of Maintenance, it is ensured that equipment safety reliability service.
The above, specific embodiment only of the invention, but protection scope of the present invention is not limited thereto, and it is any
Belong to those skilled in the art the invention discloses technical scope in, the change or replacement that can be readily occurred in, all should
It is included within the scope of the present invention.
Claims (3)
1. a kind of GIS device cancels the condition test method of the customary experiment that has a power failure, it is characterised in that：GIS device is cancelled routine and is stopped
The non-power failure testing inspection project carried out needed for electric test is divided into non-power failure routine test and diagnostic test, the non-routine that has a power failure
Experiment includes that IR thermal imaging inspection, ultraviolet detection, ultra high frequency PD detection, ultrasonic wave Partial Discharge Detection, SF6 gases are wet
Degree detection, SF6 gases decompose analyte detection；The non-power failure diagnostic test includes the detection of SF6 gas purities, the leakage inspection of SF6 gases
Survey, the detection of X-ray digital imagery, mechanical performance state-detection, mechanical oscillation detection；The state maintenance method presses below scheme
Carry out：
(1) non-power failure routine test is carried out according to cycle request, if by result of the test, can accurately grasp equipment state, then
Directly formulate corresponding Strategies of Maintenance；If needing further analytical equipment state, carrying on non-power failure diagnostic test carries out synthesis
Assessment；
(2) if suspecting there is problem in SF6 gaseous masses, or when coordinating crash analysis, optionally carry out SF6 gas purities
Detection；
If gas pressure reduction, tonifying Qi interval were less than 2 years, after the completion of tonifying Qi, when air density meter display density decline or fixed
Property detection find gas leak when, carry out SF6 Leakage inspections；
If decomposing analyte detection by ultrasonic wave, ultra high frequency PD detection or SF6 gases to note abnormalities, and suspect that the defect is
The foreign matter class defect that instrument, assembly parts, drier are scattered, screw is not tightened, radome loosens, disconnecting switch combined floodgate is not in place,
Metallic particles, supports insulative inside that disconnecting switch separating brake assembling class defect not in place and proximate contacts inside cavity are scattered
The material class defect that bubble, operation insulating bar are released, visualization nothing is carried out using the detection of X-ray digital imagery to GIS device
Damage detection, comprehensive analysis and judgement；
If suspecting there is mechanical performance defect in GIS device breaker, can carry out divide-shut brake coil current, energy storage motor electric current machinery
Performance state is detected；
If suspecting there is the mechanical breakdown or defect of latency in GIS device breaker, can carry out ultrasound examination, be believed based on vibration
Number mechanical oscillation detection.
(3) according to non-power failure routine test and diagnostic test comprehensive assessment result, corresponding Strategies of Maintenance is formulated.
2. GIS device as claimed in claim 1 cancels the condition test method of the customary experiment that has a power failure, it is characterised in that：It is described
Strategies of Maintenance in step (3) be divided into by normal cycle carry out non-power failure routine test, shorten the live detection cycle strengthen tracking,
Three kinds of interruption maintenance.
3. GIS device as claimed in claim 2 cancels the condition test method of the customary experiment that has a power failure, it is characterised in that：If inspection
Strategy is repaiied for interruption maintenance, then carries out major loop insulaion resistance, major loop resistance measurement, the examination of major loop ac voltage withstanding as needed
Test, gas tightness detection etc. have a power failure experiment after carry out corresponding overhaul plan.
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| CN108254077B (en) * | 2018-01-02 | 2020-04-28 | 国网上海市电力公司 | GIS thermal fault diagnosis method based on local and global feature information fusion |
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| CN111090024A (en) * | 2019-11-14 | 2020-05-01 | 国网上海市电力公司 | GIS state evaluation method and device based on external thermal and acoustic characteristic information |
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