CN108303593A - The detection method of casing imperfection, storage medium, processor - Google Patents
The detection method of casing imperfection, storage medium, processor Download PDFInfo
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- CN108303593A CN108303593A CN201711387200.7A CN201711387200A CN108303593A CN 108303593 A CN108303593 A CN 108303593A CN 201711387200 A CN201711387200 A CN 201711387200A CN 108303593 A CN108303593 A CN 108303593A
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- casing
- mentioned
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- described sleeve
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
- G01R27/2688—Measuring quality factor or dielectric loss, e.g. loss angle, or power factor
- G01R27/2694—Measuring dielectric loss, e.g. loss angle, loss factor or power factor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
Abstract
The invention discloses a kind of detection method of casing imperfection, storage medium, processors.Wherein, this method includes：Obtain the first predefined parameter of transformer middle sleeve, wherein above-mentioned first predefined parameter includes at least：The contact resistance value of the dielectric loss value of above-mentioned casing, the virtual value of current in resistance property of above-mentioned casing, above-mentioned inside pipe casing connector lug；By comparing the size of the first predefined parameter and the second predefined parameter of above-mentioned casing, determine above-mentioned casing whether be existing defects casing, wherein above-mentioned second predefined parameter is for reflecting that the casings of above-mentioned existing defects, drawbacks described above include at least：Above-mentioned casing makes moist bad with above-mentioned inside pipe casing wire contacts.The present invention solves the technical issues of defect for the casing that can not effectively detect transformer in the prior art.
Description
Technical field
The present invention relates to technical field of electric power, in particular to a kind of detection method of casing imperfection, storage medium,
Processor.
Background technology
In power domain, bushing shell for transformer insulating oil makes moist mainly due to rubber cushion seal failure, paper condenser set
The reasons such as tube top portion poor sealing, oil starvation cause.Casing insulating oil is had by the main harm of the time of tide：It is not only reduced after making moist absolutely
Edge is horizontal, and can accelerate the aging speed of dielectric, also, in the case where casing insulating oil makes moist, the electric current of leakage
Increase, interlayer dielectric interfacial polarization aggravation；The loss increase of dielectric can cause insulating inner to generate heat, and temperature further rises
It is high.If such case cycle continues, inside transformer insulation thermal runaway can be caused, or even cause explosion accident.
In addition, still it is worth noting that, transformer oil and capacitor core in casing caused by casing oil starvation make moist, easily lead
It causes that shelf depreciation occurs.The direct result of shelf depreciation is insulating oil or insulating paper cracking, and it is cured to generate a large amount of X between insulation screen, leads
Dielectric loss is caused to increase.In addition, shelf depreciation has cumulative effect, this trend continues, in fact it could happen that arc discharge.And
And since the joint looseness that the internal connection of casing is mainly the lead of the winding of the screw thread and transformer device in conductive head draws
It rises.When the tolerance fit application condition of threaded connection place is big, the increase of contact resistance can be caused, so as to cause high reviewing knowledge already acquired
Barrier.
The problem of defect for the casing that can not effectively detect transformer in for the above-mentioned prior art, not yet proposes have at present
The solution of effect.
Invention content
An embodiment of the present invention provides a kind of detection method of casing imperfection, storage medium, processors, existing at least to solve
There is the technical issues of defect for the casing that can not effectively detect transformer in technology.
One side according to the ... of the embodiment of the present invention provides a kind of detection method of casing imperfection, including：Obtain transformation
First predefined parameter of device middle sleeve, wherein above-mentioned first predefined parameter includes at least：The dielectric loss value of above-mentioned casing, on
State the virtual value of the current in resistance property of casing, the contact resistance value of above-mentioned inside pipe casing connector lug；By comparing the of above-mentioned casing
The size of one predefined parameter and the second predefined parameter, determine above-mentioned casing whether be existing defects casing, wherein above-mentioned second
Predefined parameter is used to reflect that the casing of above-mentioned existing defects, drawbacks described above to include at least：Above-mentioned casing make moist in above-mentioned casing
Portion's wire contacts are bad.
Further, it in the case of the virtual value for the current in resistance property that above-mentioned first predefined parameter is above-mentioned casing, obtains
The predefined parameter of above-mentioned casing includes：The virtual value of above-mentioned cannula end earth current is detected using detection device, wherein above-mentioned
Detection device is set on the current path of above-mentioned casing；According to the virtual value of above-mentioned cannula end earth current, determine above-mentioned
The virtual value of the current in resistance property of casing.
Further, the virtual value according to above-mentioned cannula end earth current, determines having for the current in resistance property of above-mentioned casing
Valid value includes：Obtain predetermined dielectric dissipation factor；According to above-mentioned dielectric dissipation factor, above-mentioned cannula end is grounded electricity
The virtual value of stream is scaled the virtual value of the current in resistance property of above-mentioned casing.
Further, in the case of the virtual value for the current in resistance property that above-mentioned first predefined parameter is above-mentioned casing, pass through
The size of the first predefined parameter and the second predefined parameter of more above-mentioned casing, determine above-mentioned casing whether be existing defects set
Pipe includes：The virtual value of the current in resistance property of more above-mentioned casing and the size of first predetermined value, obtain the first comparison result,
In, virtual value of the above-mentioned first predetermined value for characterizing above-mentioned casing by the current in resistance property of the time of tide；If above-mentioned first comparison result
Virtual value for the current in resistance property of above-mentioned casing is more than or equal to above-mentioned first predetermined value, it is determined that above-mentioned casing makes moist.
Further, in the case where above-mentioned first predefined parameter is the dielectric loss value of above-mentioned casing, by comparing upper
The size for stating the first predefined parameter and the second predefined parameter of casing, determine above-mentioned casing whether be existing defects casing packet
It includes：The dielectric loss value of more above-mentioned casing and the size of second predetermined value, obtain the second comparison result, wherein above-mentioned second
The dielectric loss value that predetermined value is used to characterize above-mentioned casing by the time of tide；If the medium that above-mentioned second comparison result is above-mentioned casing damages
Consumption value is more than or equal to above-mentioned second predetermined value, it is determined that above-mentioned casing makes moist.
Further, if above-mentioned first predefined parameter is the dielectric loss value of above-mentioned casing or the current in resistance property of above-mentioned casing
Virtual value, before the first predefined parameter for obtaining above-mentioned casing, the above method further includes：Detect the temperature of above-mentioned casing
Value；In the case where the temperature value of above-mentioned casing is less than predetermined threshold value, above-mentioned casing is heated to above-mentioned predetermined threshold value.
Further, in the case where above-mentioned first predefined parameter is the contact resistance value of above-mentioned inside pipe casing connector lug,
The first predefined parameter for obtaining above-mentioned casing includes：Detect the temperature value of conducting rod in above-mentioned casing；According to above-mentioned conducting rod
Temperature value determines the contact resistance value of above-mentioned inside pipe casing connector lug.
Further, in the case where above-mentioned first predefined parameter is the contact resistance value of above-mentioned inside pipe casing connector lug,
By comparing the size of the first predefined parameter and the second predefined parameter of above-mentioned casing, determine whether above-mentioned casing is existing defects
Casing include：The size of more above-mentioned contact resistance value and third predetermined value obtains third comparison result, wherein above-mentioned
Three predetermined values be used for characterize above-mentioned inside pipe casing wire contacts it is bad when contact resistance value；If above-mentioned third comparison result is upper
It states contact resistance value and is more than or equal to above-mentioned third predetermined value, it is determined that above-mentioned inside pipe casing wire contacts are bad.
Another aspect according to the ... of the embodiment of the present invention additionally provides a kind of detection device of casing imperfection, including：Obtain mould
Block, the first predefined parameter for obtaining above-mentioned casing, wherein above-mentioned predefined parameter includes at least：The medium of above-mentioned casing damages
The contact resistance value of consumption value, the virtual value of current in resistance property of above-mentioned casing, above-mentioned inside pipe casing connector lug；Determining module is used for
By comparing the size of the first predefined parameter and the second predefined parameter of above-mentioned casing, determine whether above-mentioned casing is existing defects
Casing, wherein above-mentioned second predefined parameter is used to reflect that the casings of above-mentioned existing defects, drawbacks described above to include at least：It is above-mentioned
Casing makes moist bad with above-mentioned inside pipe casing wire contacts.
Another aspect according to the ... of the embodiment of the present invention, additionally provides a kind of storage medium, and above-mentioned storage medium includes storage
Program, wherein above procedure execute the above-mentioned casing imperfection of any one detection method.
Another aspect according to the ... of the embodiment of the present invention additionally provides a kind of processor, and above-mentioned processor is used to run program,
Wherein, the detection method of the above-mentioned casing imperfection of any one is executed when above procedure is run.
In embodiments of the present invention, by the way of on-line checking or offline inspection, by obtaining transformer middle sleeve
First predefined parameter, wherein above-mentioned first predefined parameter includes at least：The resistance of the dielectric loss value of above-mentioned casing, above-mentioned casing
The virtual value of property electric current, the contact resistance value of above-mentioned inside pipe casing connector lug；By comparing the first predefined parameter of above-mentioned casing
With the size of the second predefined parameter, determine above-mentioned casing whether be existing defects casing, wherein above-mentioned second predefined parameter is used
In the casing for reflecting above-mentioned existing defects, drawbacks described above includes at least：Above-mentioned casing makes moist and above-mentioned inside pipe casing wire contacts
It is bad, achieved the purpose that it is effective detection transformer casing defect, to realize improve transformer safety and
The technique effect of stability, and then the technology for solving the defect for the casing that can not effectively detect transformer in the prior art is asked
Topic.
Description of the drawings
Attached drawing described herein is used to provide further understanding of the present invention, and is constituted part of this application, this hair
Bright illustrative embodiments and their description are not constituted improper limitations of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 is a kind of step flow chart of the detection method of casing imperfection according to the ... of the embodiment of the present invention；
Fig. 2 is a kind of step flow chart of the detection method of optional casing imperfection according to the ... of the embodiment of the present invention；
Fig. 3 is a kind of step flow chart of the detection method of optional casing imperfection according to the ... of the embodiment of the present invention；
Fig. 4 is a kind of step flow chart of the detection method of optional casing imperfection according to the ... of the embodiment of the present invention；
Fig. 5 is a kind of step flow chart of the detection method of optional casing imperfection according to the ... of the embodiment of the present invention；
Fig. 6 is a kind of step flow chart of the detection method of optional casing imperfection according to the ... of the embodiment of the present invention；
Fig. 7 is a kind of step flow chart of the detection method of optional casing imperfection according to the ... of the embodiment of the present invention；
Fig. 8 is a kind of step flow chart of the detection method of optional casing imperfection according to the ... of the embodiment of the present invention；And
Fig. 9 is a kind of structural schematic diagram of the detection device of casing imperfection according to the ... of the embodiment of the present invention.
Specific implementation mode
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present invention
Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
The every other embodiment that member is obtained without making creative work should all belong to the model that the present invention protects
It encloses.
It should be noted that term " first " in description and claims of this specification and above-mentioned attached drawing, "
Two " etc. be for distinguishing similar object, without being used to describe specific sequence or precedence.It should be appreciated that using in this way
Data can be interchanged in the appropriate case, so as to the embodiment of the present invention described herein can in addition to illustrating herein or
Sequence other than those of description is implemented.In addition, term " comprising " and " having " and their any deformation, it is intended that cover
It includes to be not necessarily limited to for example, containing the process of series of steps or unit, method, system, product or equipment to cover non-exclusive
Those of clearly list step or unit, but may include not listing clearly or for these processes, method, product
Or the other steps or unit that equipment is intrinsic.
Embodiment 1
According to embodiments of the present invention, a kind of embodiment of the method for the detection method of casing imperfection is provided, needs to illustrate
It is that step shown in the flowchart of the accompanying drawings can execute in the computer system of such as a group of computer-executable instructions,
Also, although logical order is shown in flow charts, and it in some cases, can be to be executed different from sequence herein
Shown or described step.
Fig. 1 is a kind of step flow chart of the detection method of casing imperfection according to the ... of the embodiment of the present invention, as shown in Figure 1,
This method comprises the following steps：
Step S102 obtains the first predefined parameter of transformer middle sleeve, wherein above-mentioned first predefined parameter at least wraps
It includes：The contact electricity of the dielectric loss value of above-mentioned casing, the virtual value of current in resistance property of above-mentioned casing, above-mentioned inside pipe casing connector lug
Resistance value；
Step S104 is determined above-mentioned by comparing the size of the first predefined parameter and the second predefined parameter of above-mentioned casing
Casing whether be existing defects casing, wherein above-mentioned second predefined parameter is used to reflect the casings of above-mentioned existing defects, above-mentioned
Defect includes at least：Above-mentioned casing makes moist bad with above-mentioned inside pipe casing wire contacts.
In embodiments of the present invention, by the way of on-line checking or offline inspection, by obtaining transformer middle sleeve
First predefined parameter, wherein above-mentioned first predefined parameter includes at least：The resistance of the dielectric loss value of above-mentioned casing, above-mentioned casing
The virtual value of property electric current, the contact resistance value of above-mentioned inside pipe casing connector lug；By comparing the first predefined parameter of above-mentioned casing
With the size of the second predefined parameter, determine above-mentioned casing whether be existing defects casing, wherein above-mentioned second predefined parameter is used
In the casing for reflecting above-mentioned existing defects, drawbacks described above includes at least：Above-mentioned casing makes moist and above-mentioned inside pipe casing wire contacts
It is bad, achieved the purpose that it is effective detection transformer casing defect, to realize improve transformer safety and
The technique effect of stability, and then the technology for solving the defect for the casing that can not effectively detect transformer in the prior art is asked
Topic.
In a kind of optional embodiment, above-mentioned first predefined parameter includes at least：The dielectric loss value of above-mentioned casing, on
State the virtual value of the current in resistance property of casing, the contact resistance value of above-mentioned inside pipe casing connector lug；Above-mentioned second predefined parameter is used for
Reflect the casing of above-mentioned existing defects.
As a kind of optional embodiment, if the first predefined parameter of above-mentioned casing is more than the second predefined parameter, it is determined that
Casing is the casing of existing defects, wherein drawbacks described above includes at least：Above-mentioned casing makes moist and above-mentioned inside pipe casing wire contacts
It is bad.
It needs to illustrate, above-mentioned current in resistance property is the electric current by resistance；In optional reality provided herein
It applies in example, can be, but not limited to the first predetermined ginseng for obtaining transformer middle sleeve by way of on-line checking or offline inspection
Number.
As a kind of optional embodiment, above-mentioned casing can be but to be not limited to transformer, current transformer, voltage mutual
The casing of the equipment such as sensor, for example, can be oil-paper capacitor formula casing.Optionally, online live detection casing and offline inspection
The condition difference of survey casing can be, but not limited to following several：1. voltage is different.Live detection casing is by used in the time of tide
Method, such as：Dielectric loss measurement, infrared heat image diagnosis etc., what set pipe insulation both ends were born is rated operational voltage；And it is offline
Measured by loss measurement, DC leakage-current etc., generally all using 10kV voltages as standard, far below transformer nominal operation electricity
Pressure.2. temperature is different.When live detection casing, due to transformer belt load running, heating in winding, iron core fever etc. cause to become
Depressor bulk temperature is higher than ambient temperature；And when carrying out off-line testing, with the extension of time of repose, the entirety of transformer
Temperature is constantly declining, and moves closer in ambient temperature.
It should be noted that as a kind of optional embodiment, carry out bushing shell for transformer offline with online live detection
When comparing, for example, carrying out offline media loss measurement compared with online dielectric loss measurement accuracy, offline straight leakage current
When compared with reflection humidified insulation accuracy is lost with offline media, it should fully ensure that and be stabilized the above difference.
Through the above steps, the purpose that the effectively defect of the casing of detection transformer may be implemented, is improved to realize
The technique effect of the safety and stability of transformer, and then solve the set that can not effectively detect transformer in the prior art
The technical issues of defect of pipe.
In alternative embodiment provided herein, the online rated operational voltage of transformer is 110kV, when normal work
Temperature be 80 DEG C；When offline progress dielectric loss measurement and DC leakage-current measure, set pipe insulation both ends bear voltage and are
10kV, off-line temperature are 20 DEG C.And then can by offline media loss measurement compared with online dielectric loss measurement accuracy, from
Compared with line DC leakage-current reflects the accuracy of same humidified insulation with offline media loss.
In a kind of optional embodiment, the application can be, but not limited under the same test conditions, carry out casing not
With the contrast test of damp degree；During actual experiment, the casing of the required different damp degrees of every group of experiment is pressed
The difference of offline media loss value, it is ascending to be ranked up, and label NO.1, NO.2, NO.3 ....
It should be noted that the casing due to artificially manufacturing different damp degrees, it may appear that moisture is flat between oilpaper
The problems such as distribution of weighing apparatus problem and moisture in entire casing is average, thus can select under the conditions of offline after testing
Go out the discarded casing to make moist and carries out Experimental Comparison.
In addition, in this application, above-mentioned casing can be, but not limited to the upper surface for being fixed on fuel tank by flange, and pass through
Screw is fixed, and can carry out more casing replacing upon completion of the assays.
In a kind of optional embodiment, Fig. 2 is a kind of detection of optional casing imperfection according to the ... of the embodiment of the present invention
The step flow chart of method, as shown in Fig. 2, the feelings of the virtual value in the current in resistance property that above-mentioned first predefined parameter is above-mentioned casing
Under condition, the predefined parameter for obtaining above-mentioned casing includes：
Step S202 detects the virtual value of above-mentioned cannula end earth current using detection device, wherein above-mentioned detection dress
It installs and is placed on the current path of above-mentioned casing；
Step S204 determines having for the current in resistance property of above-mentioned casing according to the virtual value of above-mentioned cannula end earth current
Valid value.
Optionally, above-mentioned detection device can be, but not limited to as ammeter, or current detecting may be implemented in other
Mode, the application is to this without specifically limiting.
As a kind of optional embodiment, in above-mentioned steps S202 to step S204, the application not only can be according to phase
It closes regulation and carries out dielectric loss measurement, ammeter can also be installed on the access of leakage current, measure and record cannula end
The size of (end shield) earth current virtual value, and the virtual value for the cannula end earth current that detection is obtained, are damaged according to medium
Consumption factor converts, and calculates corresponding current in resistance property virtual value size.
In a kind of optional embodiment, Fig. 3 is a kind of detection of optional casing imperfection according to the ... of the embodiment of the present invention
The step flow chart of method, as shown in figure 3, the virtual value according to above-mentioned cannula end earth current, determines the resistance of above-mentioned casing
The virtual value of property electric current includes：
Step S302 obtains predetermined dielectric dissipation factor；
The virtual value of above-mentioned cannula end earth current is scaled by step S304 according to above-mentioned dielectric dissipation factor
State the virtual value of the current in resistance property of casing.
In a kind of optional embodiment, in above-mentioned steps S302 to step S304, optional reality provided herein
The virtual value for applying the cannula end earth current that example can obtain detection, converts according to dielectric dissipation factor, calculates phase
Answer current in resistance property virtual value size.
In a kind of optional embodiment, Fig. 4 is a kind of detection of optional casing imperfection according to the ... of the embodiment of the present invention
The step flow chart of method, as shown in figure 4, the feelings of the virtual value in the current in resistance property that above-mentioned first predefined parameter is above-mentioned casing
Under condition, by comparing the size of the first predefined parameter and the second predefined parameter of above-mentioned casing, determine whether above-mentioned casing is to deposit
Include in the casing of defect：
Step S402, the virtual value of the current in resistance property of more above-mentioned casing and the size of first predetermined value obtain the first ratio
Relatively result, wherein the virtual value that above-mentioned first predetermined value is used to characterize above-mentioned casing by the current in resistance property of the time of tide；
Step S404, if the virtual value that above-mentioned first comparison result is the current in resistance property of above-mentioned casing is more than or equal to above-mentioned the
One predetermined value, it is determined that above-mentioned casing makes moist.
In a kind of optional embodiment, the virtual value of above-mentioned current in resistance property is used to characterize the virtual value of leakage current.This
Apply provided embodiment on-line checking environmental condition can be, but not limited to for：System voltage 110kV/, bushing temperature 80
℃；Off-line testing condition can be, but not limited to for：Applied voltage 10kV, 20 DEG C of bushing temperature.If under these conditions, online inspection
Survey leakage current virtual value be：80mA, offline inspection DC leakage-current are：55 μ A then respectively obtain the above detection
The normal data of data and casing is compared, and detection casing is with the presence or absence of class defect of making moist.
Based on the alternative embodiment that above-mentioned steps S402 is provided to step S404, the current in resistance property of more above-mentioned casing
Virtual value is compared with casing by the virtual value of the current in resistance property of the time of tide, if for example, the resistive electricity of currently detected casing
The virtual value of stream is 80mA, and above-mentioned first predetermined value is that the virtual value of the current in resistance property of 50mA namely above-mentioned casing is more than or equal to
Above-mentioned first predetermined value, it is determined that above-mentioned casing makes moist.
It, in this application, can be by casing DC leakage-current and ac leakage current as a kind of optional embodiment
Resistive composition virtual value is compared.
In a kind of optional embodiment, Fig. 5 is a kind of detection of optional casing imperfection according to the ... of the embodiment of the present invention
The step flow chart of method, as shown in figure 5, in the case where above-mentioned first predefined parameter is the dielectric loss value of above-mentioned casing,
By comparing the size of the first predefined parameter and the second predefined parameter of above-mentioned casing, determine whether above-mentioned casing is existing defects
Casing include：
Step S502, the dielectric loss value of more above-mentioned casing and the size of second predetermined value, obtain the second comparison result,
Wherein, the dielectric loss value that above-mentioned second predetermined value is used to characterize above-mentioned casing by the time of tide；
Step S504, if the dielectric loss value that above-mentioned second comparison result is above-mentioned casing is more than or equal to above-mentioned second and makes a reservation for
Value, it is determined that above-mentioned casing makes moist.
In a kind of optional embodiment, in the case where the first predefined parameter is the dielectric loss value of casing, set is obtained
The predefined parameter of pipe includes：The dielectric loss that casing is detected by predetermined way, obtains the dielectric loss value of casing, wherein pre-
Determining mode includes：Offline inspection and on-line checking.
In a kind of optional embodiment, the on-line checking environmental condition of embodiment provided herein can with but it is unlimited
Yu Wei：System voltage 110kV/, 80 DEG C of bushing temperature；Off-line testing condition can be, but not limited to for：Applied voltage 10kV, casing
20 DEG C of temperature.If under these conditions, the dielectric loss value of on-line checking is：0.015, the dielectric loss value of offline inspection is：
0.013；Then the normal data for detecting obtained data and casing above is compared respectively, detection casing, which whether there is, to make moist
Class defect.
Based on the alternative embodiment that above-mentioned steps S502 is provided to step S504, the dielectric loss value of more above-mentioned casing
Be compared by the dielectric loss value of the time of tide with casing, if for example, the dielectric loss value of currently detected casing be 0.015,
Above-mentioned second predetermined value is 0.013 namely the dielectric loss value of casing is more than or equal to above-mentioned second predetermined value, it is determined that above-mentioned set
Pipe makes moist.
In a kind of optional embodiment, Fig. 6 is a kind of detection of optional casing imperfection according to the ... of the embodiment of the present invention
The step flow chart of method, if as shown in fig. 6, above-mentioned first predefined parameter is the dielectric loss value of above-mentioned casing or above-mentioned casing
Current in resistance property virtual value, before the first predefined parameter for obtaining above-mentioned casing, the above method further includes：
Step S602 detects the temperature value of above-mentioned casing；
Step S604 heats above-mentioned casing to above-mentioned pre- in the case where the temperature value of above-mentioned casing is less than predetermined threshold value
If threshold value.
Optionally, above-mentioned predetermined threshold value can be 20 DEG C.
In a kind of optional embodiment, if above-mentioned first predefined parameter is the dielectric loss value of above-mentioned casing or above-mentioned set
The virtual value of the current in resistance property of pipe can be, but not limited to observe and record before the first predefined parameter for obtaining above-mentioned casing
The oil temperature of fuel tank carries out corresponding heating work if oil temperature is not up to 20 DEG C, if oil temperature reaches 20 DEG C, reduces heating power,
And 3 hours (temporally variableization) of the temperature will be maintained, the temperature to realize entire casing is constant.
Also, after temperature is stablized 3 hours, measurement of correlation can be carried out according to dielectric loss off-line measurement regulation, and
Record detecting as a result, for example, online dielectric loss measurement, is also to heat transformer oil, after oil temperature reaches 80 DEG C, drops
Low heating power to maintain oil temperature to stablize, and continues 3 hours；Bottom shielding of bushing is grounded, and army cap is connected 110kV by u pper s ide
Voltage source carries out dielectric loss parameter measurement according to the online dielectric loss measurement regulation of casing, and records the medium damage of its detection
Consumption value.
It can be, but not limited in tank bottoms as a kind of optional embodiment in order to keep the oil temperature of transformer constant
Resistive heating device (for example, resistance heater) is installed, to keep the oil temperature of transformer constant.It should be noted that in resistance
The outside of heater can be hindered with serial adjustable or Loading voltage regulator, and then can adjust the big of output power at any time as needed
It is small, to maintain oil temperature constant.
As an alternative embodiment, transformer oil is stored in fuel tank, also serve as support device.It is answered on the upside of fuel tank
There are gas vent, the raising due to oil temperature is prevented, discharge of gas is not smooth, and sets off an explosion.In addition, may be used also on fuel tank top
To install thermometer, oil temperature is observed at any time.
In a kind of optional embodiment, Fig. 7 is a kind of detection of optional casing imperfection according to the ... of the embodiment of the present invention
The step flow chart of method, as shown in fig. 7, in the contact resistance value that above-mentioned first predefined parameter is above-mentioned inside pipe casing connector lug
In the case of, the first predefined parameter for obtaining above-mentioned casing includes：
Step S702 detects the temperature value of conducting rod in above-mentioned casing；
Step S704 determines the contact resistance value of above-mentioned inside pipe casing connector lug according to the temperature value of above-mentioned conducting rod.
In a kind of optional embodiment, the inside pipe casing connector of transformer is mainly screw thread and transformation in conductive head
Caused by the joint looseness of the lead of the winding of device device, when the tolerance fit application condition of threaded connection place is big, it can cause to connect
The increase of electric shock resistance, so as to cause high temperature failure, the method that predominantly detected since inside pipe casing wire contacts are undesirable is using red
Outer imaging is obtained the temperature of army cap (nut).When lead internal connection loosens, the contact electricity of the head of conducting rod with lead
Resistance increases, and generates resistance heat, and since the thermal conductivity of conducting rod is high, i.e., thermal resistance is smaller, then the then big portion of inner lead connector
The head for dividing heat that can pass to conducting rod, i.e., by the position of army cap.
In alternative embodiment provided herein, it can ignore temperature difference caused by army cap and conductive knock-off joint,
Think that the head temperature of conducting rod is by the temperature of army cap.If being not due to cause army cap poor contact itself in determination
It, can be by establishing by the relationship of army cap and contact resistance, by by the temperature estimation of army cap, obtaining under the precondition of overheat
The contact resistance of back panel wiring head, you can to show whether back panel wiring head breaks down.
Since the current value of step down side is maximum, if transformer guide rod loosens, at low-tension bushing caused by Wen Sheng
Obvious, therefore, the casing in above-mentioned implementation can be, but not limited to for low-tension bushing, also, since bushing shell for transformer has
Axial symmetry characteristic, thus three-dimensional low-tension bushing can be reduced to two-dimensional axial symmetric model, it can be by being manually set at nipple
Contact resistance, determine contact resistance and by the relationship of army cap temperature.
In a kind of optional embodiment, Fig. 8 is a kind of detection of optional casing imperfection according to the ... of the embodiment of the present invention
The step flow chart of method, as shown in figure 8, in the contact resistance value that above-mentioned first predefined parameter is above-mentioned inside pipe casing connector lug
In the case of, by comparing the size of the first predefined parameter and the second predefined parameter of above-mentioned casing, whether determine above-mentioned casing
Include for the casing of existing defects：
Step S802, the size of more above-mentioned contact resistance value and third predetermined value obtain third comparison result, wherein
Above-mentioned third predetermined value be used for characterize above-mentioned inside pipe casing wire contacts it is bad when contact resistance value；
Step S804, if above-mentioned third comparison result, which is above-mentioned contact resistance value, is more than or equal to above-mentioned third predetermined value,
Determine that above-mentioned inside pipe casing wire contacts are bad.
As a kind of optional embodiment, in above-mentioned steps S802 to step S804, above-mentioned third predetermined value is used for table
Levy above-mentioned inside pipe casing wire contacts it is bad when contact resistance value.If contact resistance value is more than or equal to above-mentioned third predetermined value,
Then determine that above-mentioned inside pipe casing wire contacts are bad.By above-described embodiment, the application can be drawn by live detection transformer
The default electrical parameter of wire terminal, judges whether pigtail splice loosens, and then improves whether detection transformer lead loosens electricity accurately
Rate.
Embodiment 2
The embodiment of the present invention additionally provides a kind of device for implementing the detection method of above-mentioned casing imperfection, and Fig. 9 is root
According to a kind of structural schematic diagram of the detection device of casing imperfection of the embodiment of the present invention, as shown in figure 9, the inspection of above-mentioned casing imperfection
Device is surveyed, including：Acquisition module 10 and determining module 12, wherein
Acquisition module 10, the first predefined parameter for obtaining above-mentioned casing, wherein above-mentioned predefined parameter includes at least：
The contact resistance of the dielectric loss value of above-mentioned casing, the virtual value of current in resistance property of above-mentioned casing, above-mentioned inside pipe casing connector lug
Value；Determining module 12 determines above-mentioned for the size of the first predefined parameter and the second predefined parameter by comparing above-mentioned casing
Casing whether be existing defects casing, wherein above-mentioned second predefined parameter is used to reflect the casings of above-mentioned existing defects, above-mentioned
Defect includes at least：Above-mentioned casing makes moist bad with above-mentioned inside pipe casing wire contacts.
In embodiments of the present invention, by the way of on-line checking or offline inspection, by obtaining transformer middle sleeve
First predefined parameter, wherein above-mentioned first predefined parameter includes at least：The resistance of the dielectric loss value of above-mentioned casing, above-mentioned casing
The virtual value of property electric current, the contact resistance value of above-mentioned inside pipe casing connector lug；By comparing the first predefined parameter of above-mentioned casing
With the size of the second predefined parameter, determine above-mentioned casing whether be existing defects casing, wherein above-mentioned second predefined parameter is used
In the casing for reflecting above-mentioned existing defects, drawbacks described above includes at least：Above-mentioned casing makes moist and above-mentioned inside pipe casing wire contacts
It is bad, achieved the purpose that it is effective detection transformer casing defect, to realize improve transformer safety and
The technique effect of stability, and then the technology for solving the defect for the casing that can not effectively detect transformer in the prior art is asked
Topic.
It should be noted that above-mentioned modules can be realized by software or hardware, for example, for the latter,
It can be accomplished by the following way：Above-mentioned modules can be located in same processor；Alternatively, above-mentioned modules are with arbitrary
The mode of combination is located in different processors.
Herein it should be noted that above-mentioned acquisition module 10 and determining module 12 correspond to the step S102 in embodiment 1
To step S104, above-mentioned module is identical as example and application scenarios that corresponding step is realized, but is not limited to the above embodiments 1
Disclosure of that.It should be noted that above-mentioned module may operate in as a part for device in terminal.
It should be noted that the optional or preferred embodiment of the present embodiment may refer to the associated description in embodiment 1,
Details are not described herein again.
The detection device of above-mentioned casing imperfection can also include processor and memory, above-mentioned acquisition module 10 and determine
Modules 12 etc. are used as program unit storage in memory, and above procedure unit stored in memory is executed by processor
To realize corresponding function.
Include kernel in processor, is gone in memory to transfer corresponding program unit by kernel, above-mentioned kernel can be arranged
One or more.Memory may include the volatile memory in computer-readable medium, random access memory (RAM)
And/or the forms such as Nonvolatile memory, such as read-only memory (ROM) or flash memory (flash RAM), memory includes at least one
Storage chip.
The embodiment of the present application also provides a kind of storage mediums.Optionally, in the present embodiment, above-mentioned storage medium includes
The program of storage, wherein equipment where controlling above-mentioned storage medium when above procedure is run executes any one of the above casing
The detection method of defect.
Optionally, in the present embodiment, above-mentioned storage medium can be located in computer network Computer terminal group
In any one terminal, or in any one mobile terminal in mobile terminal group.
The embodiment of the present application also provides a kind of processors.Optionally, in the present embodiment, above-mentioned processor is for running
Program, wherein above procedure executes the detection method of any one of the above casing imperfection when running.
The embodiment of the present application provides a kind of equipment, equipment include processor, memory and storage on a memory and can
The program run on a processor, processor realize following steps when executing program：Obtain transformer middle sleeve first is predetermined
Parameter, wherein above-mentioned first predefined parameter includes at least：The current in resistance property of the dielectric loss value of above-mentioned casing, above-mentioned casing
The contact resistance value of virtual value, above-mentioned inside pipe casing connector lug；It is pre- by comparing the first predefined parameter of above-mentioned casing and second
The size for determining parameter, determine above-mentioned casing whether be existing defects casing, wherein above-mentioned second predefined parameter for reflect
The casing of existing defects is stated, drawbacks described above includes at least：Above-mentioned casing makes moist bad with above-mentioned inside pipe casing wire contacts.
Optionally, when above-mentioned processor executes program, detection device can also be used to detect above-mentioned cannula end ground connection electricity
The virtual value of stream, wherein above-mentioned detection device is set on the current path of above-mentioned casing；It is grounded electricity according to above-mentioned cannula end
The virtual value of stream determines the virtual value of the current in resistance property of above-mentioned casing.
Optionally, when above-mentioned processor executes program, predetermined dielectric dissipation factor can also be obtained；According to above-mentioned
The virtual value of above-mentioned cannula end earth current is scaled the virtual value of the current in resistance property of above-mentioned casing by dielectric dissipation factor.
Optionally, when above-mentioned processor executes program, can also more above-mentioned casing current in resistance property virtual value and the
The size of one predetermined value obtains the first comparison result, wherein above-mentioned first predetermined value is hindered for characterizing above-mentioned casing by the time of tide
The virtual value of property electric current；If the virtual value that above-mentioned first comparison result is the current in resistance property of above-mentioned casing is more than or equal to above-mentioned first
Predetermined value, it is determined that above-mentioned casing makes moist.
Optionally, when above-mentioned processor executes program, can also the dielectric loss value of more above-mentioned casing make a reservation for second
The size of value obtains the second comparison result, wherein the dielectric loss that above-mentioned second predetermined value is used to characterize above-mentioned casing by the time of tide
Value；If the dielectric loss value that above-mentioned second comparison result is above-mentioned casing is more than or equal to above-mentioned second predetermined value, it is determined that above-mentioned
Casing makes moist.
Optionally, when above-mentioned processor executes program, the temperature value of above-mentioned casing can also be detected；In the temperature of above-mentioned casing
In the case that angle value is less than predetermined threshold value, above-mentioned casing is heated to above-mentioned predetermined threshold value.
Optionally, when above-mentioned processor executes program, the temperature value of conducting rod in above-mentioned casing can also be detected；According to upper
The temperature value for stating conducting rod determines the contact resistance value of above-mentioned inside pipe casing connector lug.
Optionally, when above-mentioned processor executes program, can also more above-mentioned contact resistance value and third predetermined value it is big
It is small, obtain third comparison result, wherein above-mentioned third predetermined value be used for characterize above-mentioned inside pipe casing wire contacts it is bad when connect
Electric shock resistance value；If above-mentioned third comparison result, which is above-mentioned contact resistance value, is more than or equal to above-mentioned third predetermined value, it is determined that above-mentioned
Inside pipe casing wire contacts are bad.
Present invention also provides a kind of computer program products, when being executed on data processing equipment, are adapted for carrying out just
The program of beginningization there are as below methods step：Obtain the first predefined parameter of transformer middle sleeve, wherein above-mentioned first predefined parameter
It includes at least：The dielectric loss value of above-mentioned casing, the virtual value of current in resistance property of above-mentioned casing, above-mentioned inside pipe casing connector lug
Contact resistance value；By comparing the size of the first predefined parameter and the second predefined parameter of above-mentioned casing, determine that above-mentioned casing is
The no casing for existing defects, wherein above-mentioned second predefined parameter is used to reflect the casing of above-mentioned existing defects, and drawbacks described above is extremely
Include less：Above-mentioned casing makes moist bad with above-mentioned inside pipe casing wire contacts.
Optionally, when above computer program product executes program, detection device can also be used to detect above-mentioned casing end
Terminate the virtual value of earth-current, wherein above-mentioned detection device is set on the current path of above-mentioned casing；According to above-mentioned casing end
The virtual value for terminating earth-current, determines the virtual value of the current in resistance property of above-mentioned casing.
Optionally, when above computer program product executes program, predetermined dielectric dissipation factor can also be obtained；
According to above-mentioned dielectric dissipation factor, the virtual value of above-mentioned cannula end earth current is scaled to the current in resistance property of above-mentioned casing
Virtual value.
Optionally, when above computer program product executes program, can also the current in resistance property of more above-mentioned casing have
The size of valid value and first predetermined value obtains the first comparison result, wherein above-mentioned first predetermined value for characterize above-mentioned casing by
The virtual value of the current in resistance property of the time of tide；It is more than or equal to if above-mentioned first comparison result is the virtual value of the current in resistance property of above-mentioned casing
Above-mentioned first predetermined value, it is determined that above-mentioned casing makes moist.
Optionally, above computer program product execute program when, can also more above-mentioned casing dielectric loss value with
The size of second predetermined value obtains the second comparison result, wherein above-mentioned second predetermined value is for characterizing above-mentioned casing by the time of tide
Dielectric loss value；If the dielectric loss value that above-mentioned second comparison result is above-mentioned casing is more than or equal to above-mentioned second predetermined value,
Determine that above-mentioned casing makes moist.
Optionally, when above computer program product executes program, the temperature value of above-mentioned casing can also be detected；Above-mentioned
In the case that the temperature value of casing is less than predetermined threshold value, above-mentioned casing is heated to above-mentioned predetermined threshold value.
Optionally, when above computer program product executes program, the temperature of conducting rod in above-mentioned casing can also be detected
Value；According to the temperature value of above-mentioned conducting rod, the contact resistance value of above-mentioned inside pipe casing connector lug is determined.
Optionally, above computer program product execute program when, can also more above-mentioned contact resistance value and third it is pre-
The size of definite value obtains third comparison result, wherein above-mentioned third predetermined value is for characterizing above-mentioned inside pipe casing wire contacts not
Contact resistance value when good；If above-mentioned third comparison result, which is above-mentioned contact resistance value, is more than or equal to above-mentioned third predetermined value,
Determine that above-mentioned inside pipe casing wire contacts are bad.
The embodiments of the present invention are for illustration only, can not represent the quality of embodiment.
In the above embodiment of the present invention, all emphasizes particularly on different fields to the description of each embodiment, do not have in some embodiment
The part of detailed description may refer to the associated description of other embodiment.
In several embodiments provided herein, it should be understood that disclosed technology contents can pass through others
Mode is realized.Wherein, the apparatus embodiments described above are merely exemplary, for example, the unit division, Ke Yiwei
A kind of division of logic function, formula that in actual implementation, there may be another division manner, such as multiple units or component can combine or
Person is desirably integrated into another system, or some features can be ignored or not executed.Another point, shown or discussed is mutual
Between coupling, direct-coupling or communication connection can be INDIRECT COUPLING or communication link by some interfaces, unit or module
It connects, can be electrical or other forms.
The unit illustrated as separating component may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, you can be located at a place, or may be distributed over multiple
On unit.Some or all of unit therein can be selected according to the actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it can also
It is that each unit physically exists alone, it can also be during two or more units be integrated in one unit.Above-mentioned integrated list
The form that hardware had both may be used in member is realized, can also be realized in the form of SFU software functional unit.
If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product
When, it can be stored in a computer read/write memory medium.Based on this understanding, technical scheme of the present invention is substantially
The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words
It embodies, which is stored in a storage medium, including some instructions are used so that a computer
Equipment (can be personal computer, server or network equipment etc.) execute each embodiment the method for the present invention whole or
Part steps.And storage medium above-mentioned includes：USB flash disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited
Reservoir (RAM, Random Access Memory), mobile hard disk, magnetic disc or CD etc. are various can to store program code
Medium.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of detection method of casing imperfection, which is characterized in that including：
Obtain the first predefined parameter of transformer middle sleeve, wherein first predefined parameter includes at least：Jie of described sleeve pipe
The contact resistance value of matter loss value, the virtual value of current in resistance property of described sleeve pipe, described sleeve pipe back panel wiring head；
By comparing the size of the first predefined parameter and the second predefined parameter of described sleeve pipe, determine whether described sleeve pipe is presence
The casing of defect, wherein second predefined parameter is used to reflect that the casing of the existing defects, the defect to include at least：
Described sleeve pipe is made moist and described sleeve pipe inner lead poor contact.
2. according to the method described in claim 1, it is characterized in that, in the resistive electricity that first predefined parameter is described sleeve pipe
In the case of the virtual value of stream, the predefined parameter for obtaining described sleeve pipe includes：
Using the virtual value of detection device detection described sleeve pipe end earth current, wherein the detection device is set to described
On the current path of casing；
According to the virtual value of described sleeve pipe end earth current, the virtual value of the current in resistance property of described sleeve pipe is determined.
3. according to the method described in claim 2, it is characterized in that, virtual value according to described sleeve pipe end earth current, really
The virtual value for determining the current in resistance property of described sleeve pipe includes：
Obtain predetermined dielectric dissipation factor；
According to the dielectric dissipation factor, the virtual value of described sleeve pipe end earth current is scaled to the resistive electricity of described sleeve pipe
The virtual value of stream.
4. according to the method described in claim 1, it is characterized in that, in the resistive electricity that first predefined parameter is described sleeve pipe
In the case of the virtual value of stream, by comparing the size of the first predefined parameter and the second predefined parameter of described sleeve pipe, institute is determined
State whether casing is that the casings of existing defects includes：
Compare the virtual value of the current in resistance property of described sleeve pipe and the size of first predetermined value, obtain the first comparison result, wherein institute
State virtual value of the first predetermined value for characterizing described sleeve pipe by the current in resistance property of the time of tide；
If the virtual value that first comparison result is the current in resistance property of described sleeve pipe is more than or equal to the first predetermined value, really
Determine described sleeve pipe to make moist.
5. according to the method described in claim 1, it is characterized in that, being damaged in the medium that first predefined parameter is described sleeve pipe
In the case of consumption value, by comparing the size of the first predefined parameter and the second predefined parameter of described sleeve pipe, described sleeve pipe is determined
Whether it is that the casings of existing defects includes：
Compare the dielectric loss value of described sleeve pipe and the size of second predetermined value, obtain the second comparison result, wherein described second
Predetermined value is for characterizing dielectric loss value of the described sleeve pipe by the time of tide；
If the dielectric loss value that second comparison result is described sleeve pipe is more than or equal to the second predetermined value, it is determined that described
Casing makes moist.
6. method as claimed in any of claims 1 to 5, which is characterized in that if first predefined parameter is institute
The virtual value for stating the dielectric loss value of casing or the current in resistance property of described sleeve pipe, obtain described sleeve pipe the first predefined parameter it
Before, the method further includes：
Detect the temperature value of described sleeve pipe；
In the case where the temperature value of described sleeve pipe is less than predetermined threshold value, heating described sleeve pipe to the predetermined threshold value.
7. according to the method described in claim 1, it is characterized in that, being described sleeve pipe back panel wiring in first predefined parameter
In the case of the contact resistance value of head, the first predefined parameter for obtaining described sleeve pipe includes：
Detect the temperature value of conducting rod in described sleeve pipe；
According to the temperature value of the conducting rod, the contact resistance value of described sleeve pipe back panel wiring head is determined.
8. according to the method described in claim 1, it is characterized in that, being described sleeve pipe back panel wiring in first predefined parameter
In the case of the contact resistance value of head, by comparing the size of the first predefined parameter and the second predefined parameter of described sleeve pipe, really
Determine whether described sleeve pipe is that the casings of existing defects includes：
The size for comparing the contact resistance value and third predetermined value obtains third comparison result, wherein the third predetermined value
For characterizing contact resistance value when described sleeve pipe inner lead poor contact；
If the third comparison result, which is the contact resistance value, is more than or equal to the third predetermined value, it is determined that in described sleeve pipe
Portion's wire contacts are bad.
9. a kind of storage medium, which is characterized in that the storage medium includes the program of storage, wherein described program right of execution
Profit requires the detection method of the casing imperfection described in any one of 1 to 8.
10. a kind of processor, which is characterized in that the processor is for running program, wherein right of execution when described program is run
Profit requires the detection method of the casing imperfection described in any one of 1 to 8.
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| CN201711387200.7A CN108303593A (en) | 2017-12-20 | 2017-12-20 | The detection method of casing imperfection, storage medium, processor |
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