CN108844689A - A kind of transformer oil leakage detection method - Google Patents
A kind of transformer oil leakage detection method Download PDFInfo
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- CN108844689A CN108844689A CN201810605234.7A CN201810605234A CN108844689A CN 108844689 A CN108844689 A CN 108844689A CN 201810605234 A CN201810605234 A CN 201810605234A CN 108844689 A CN108844689 A CN 108844689A
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- fluorescence
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
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Abstract
The invention discloses a kind of transformer oil leakage detection methods, comprise the steps of：A, flashlight is carried, glasses are worn；B, a wide range of irradiating and detecting fluorescence area；C, for several pieces of fluorescence areas found, the interference of other fluorescent materials is excluded, if being not interference, it may be determined that be leakage point, position successfully；D, continue next fluorescence area positioning to go through.The present invention is showed by being irradiated to each component of transformer, by leakage point with blue-fluorescence formal intuition, and easy to use, detection fast, can substantially shorten the time-consuming that tour personnel searches transformer leakage point, improve the working efficiency of tour personnel.And the deficiency in new Shanxi personnel experience is largely made up, it while guaranteeing work quality, helps them quickly to identify leakage point, reduces very long working experience cumulative process, leakage point searching work is allowed to be easier upper hand.
Description
Technical field
The present invention relates to transformer technology field, specifically a kind of transformer oil leakage detection method.
Background technique
Transformer oil refers in the oil-filled electric equipments such as transformer, reactor, mutual inductor, casing, oil circuit breaker, rises
Insulation, cooling, arc extinguishing effect a kind of insulation oil product [Wang Jilong, selection (J) transformer of clothing man text transformer oil, 2005,
42(4):27-28].In recent years, with the development of transformer substation switch reforming without oil and dry-type transformer, many oil-immersed equipments
Substituted by non-oil ultra high vacuum system equipment [the bright of Li Wei brief talks application (J) science and wealth of 10KV vacuum circuit breaker, and 2013, (6):
161；Non-oil ultra high vacuum system update (J) electricity world of the red rigid .110kV oil-minimum breaker in Shen, 2012, (9):22-23].Wherein, dry type becomes
The advantages that depressor is by its environmental protection, low noise, fire-retardant, shock resistance, the quilt in capacity 2000kVA, voltage 35kV power distribution network below
It is widely used, but is influenced by factors such as overload capacity and costs, it is still universal in voltage class 35kV and the above power grid at present
Using oil-immersed transformer [Zheng Baosheng, Li Jun simply analyse superiority and inferiority (J) the building technology of dry-type transformer and oil-immersed transformer with
Management, 2013, (4):20-23].And although there are shortcomings in oil immersed type capacitor, but still current substation uses
[Chen Caiming, Jia Dexing, Zhu Yiyuan dry type non-oil ultra high vacuum system structure are development trend (J) of self healing capacitor to one of mainstream equipment
Power capacitor and reactive compensation, 2014,35 (4):1-4] [the quality of Chen Caiming, Zhu Yiyuan self-recovery low-voltage parallel capacitor
Status and analysis [C] power capacitor and the Xi'an reactive power compensation technology collection of thesis:China Institute of Electrical Engineering Technology's power capacitor
Special commission, 2009:60-62].From document, [Yan Xiuke, Sunyang, Yu Cunzhan wait oil-immersed inverted current transformer major insulation electric
Field analysis and optimization design (J) electrotechnics journal, 2014,29 (1):37-42] [oil-immersed type power mutual inductor shape in Yue Quan
The Hebei research [D] of state appraisal procedure:North China Electric Power University, 2009.] as can be seen that current China's mutual inductor is largely oil
Insulated type, be partially SF6 insulation.[Hu Ming, Yu Yanle, Chen Yu wait .35kV oil immersed type shunt reactor reactance to try to document
Discussion (J) the Shanghai Electric Power 2013 tested, (3):138-140] by comparing shunt reactor performance, it is indicated that oil immersed type iron core electricity
Anti- device possesses the advantages such as stable, loss is small, the general installation of oil-immersed type shunt reactor of large-scale substation.As it can be seen that oil immersed type
Equipment is still widely used in substation.
But in long-term operational process, with the variation of running environment and mode, oil-immersed equipment will appear different journeys
The oil seepage phenomena of degree, the generation of such case gently can then reduce apparatus insulated level, limit its power supply capacity, and heavy then influence is set
Standby safety, endanger power grid operation [Xun Haifeng transformer leakage of oil status and countermeasure (J) electric power journal, 2007, (2):
281-282].Therefore, in the daily tour maintenance to oil-immersed equipment, leakage of oil inspection is just particularly important.
Currently, all detection leakage of oil methods are mostly rule of thumb, can be used for detecting without accurately instrument, with oil immersion
For the detection of formula transformer leakage of oil, the common practice that power supply company takes is：Equipment operation maintenance personnel uses white light when making an inspection tour
Flashlight to the easily permeability point such as the casing of oil-immersed transformer, butterfly valve, Buchholz relay junction and below, shine by ground
It penetrates, is distinguished by the method for " range estimation " and " nasil ", found from the experience of long-term substation inspection, conventional method is searched
Efficiency is influenced by working experience, when carrying out the lookup of main transformer leakage of oil using conventional method, needs to occupy plenty of time, efficiency
It is low, it is unfavorable for tour work and completes according to quantity on time.
[Dong Baoguo, the transformer leakage of oil based on image procossing detect (J) power construction, 2013,34 (11) to document:
121-124] devise a kind of transformer leakage of oil detection based on image procossing.This kind of method is by scene photograph and prestores just
The color histogram of normal photo compares, and notes abnormalities and region and is analyzed.Angle that such method shoots scene photograph is shone
The size of piece, live light conditions etc. are more demanding, and need by the way that photo is imported computer, can not at the scene at the first time
It was found that permeability phenomenon and judge leak oil drop.At present still without effective, convenient and fast transformer leakage of oil detection method.
Detection technique of fluorescence provides new way to search leakage, and fluorescence leakage detection uses UV/blue detector lamp, can
With it is quick, easy, correctly find the smallest leakage.In recent years, oil contaminants content is supervised in petroleum exploration & development, soil
It surveys and fields, the detection technique of fluorescence such as aircraft hydraulic oil leakage and offshore spilled oil monitoring has been widely used, and obtain a large amount of
Research achievement demonstrates the validity of petroleum bloom detection method.
Summary of the invention
The purpose of the present invention is to provide a kind of transformer oil leakage detection methods, to solve to propose in above-mentioned background technique
The problem of.
To achieve the above object, the present invention provides the following technical solutions：
A kind of transformer oil leakage detection method, comprises the steps of：
A, flashlight is carried, glasses are worn；
B, a wide range of irradiating and detecting fluorescence area；
C, for several pieces of fluorescence areas found, the interference of other fluorescent materials is excluded, if being not interference, it may be determined that be leakage
Oil drop positions successfully；
D, continue next fluorescence area positioning to go through.
As further technical solution of the present invention：The step B is specifically：Ultraviolet source is adjusted to large spot mode,
1.5 meters away from equipment radius (110 kilovolts of safe distances), surrounding and the bottom surface of irradiation apparatus and its component, check whether there is respectively
Ultraluminescence phenomenon, detection structure be otherwise detection terminate, detection structure be to carry out accurate positioning lookup.
As further technical solution of the present invention：The step C is specifically：It is ultraviolet close to phosphor region in safe distance
Light source reduces hot spot to fluorescence area size, and multi-angle irradiation observation checks whether it is the interference of other fluorescent materials, detection structure
For the success of otherwise spilling point, detection structure is to be, detection terminates.
As further technical solution of the present invention：The flashlight is ultraviolet lamp or ultraviolet light flashlight.
As further technical solution of the present invention：The glasses are ultraviolet protection glasses.
Compared with prior art, the beneficial effects of the invention are as follows：The present invention, will by being irradiated to each component of transformer
Leakage point is showed with blue-fluorescence formal intuition, and easy to use, detection fast, can substantially shorten tour personnel and search transformer leakage
The time-consuming of oil drop improves the working efficiency of tour personnel.And the deficiency in new Shanxi personnel experience is largely made up, guarantee
While work quality, them is helped quickly to identify leakage point, reduces very long working experience cumulative process, leakage point is allowed to look into
It looks for a job and more easily goes up hand.
Detailed description of the invention
Fig. 1 is flow chart of the invention.
Fig. 2 is the process schematic of ultraviolet light fluorescence.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
A kind of transformer oil leakage detection method referring to FIG. 1-2, comprises the steps of：
A, ultraviolet lamp or ultraviolet light flashlight are carried, ultraviolet protection glasses are worn；
B, ultraviolet source is adjusted to large spot mode, 1.5 meters away from equipment radius (110 kilovolts of safe distances), irradiated respectively
The surrounding and bottom surface of equipment and its component check whether there is Ultraluminescence phenomenon, and detection structure is that otherwise detection terminates, detection knot
Structure be to carry out accurate positioning lookup；
C, for several pieces of fluorescence areas found, close to phosphor region in safe distance, ultraviolet source reduces hot spot to fluorescence
Area size, multi-angle irradiation observation, check whether be other fluorescent materials interference, detection structure be otherwise spilling point at
Function, detection structure be carry out detection terminate；
D, continue next fluorescence area positioning to go through.
The working principle of the invention is：1, the basic principle that petroleum bloom generates：
When irradiating certain fluorescent material with a kind of light (such as ultraviolet light) of wavelength, this substance, which can be launched to contrast, to be penetrated
The longer light of optical wavelength (such as near ultraviolet or visible light), once stopping incident light, luminescence phenomenon also disappears immediately therewith, this hair
Light out is known as fluorescence.
Fluorescence phenomenon is exactly the process of an energy level transition, as shown in Figure 2.Molecule receives incident light λ irradiation, respectively transition
To S1 and S2 energy level.Excited electron the energy transmission of absorption to the molecule in environment, between electron energy level, vibration level it
Between occur vibration relaxation phenomenon, released energy in the form of thermal energy.It transits to the excited electron of S2 energy level and is transferred to the by interior
One excitation state S1 finally emits to return from the lowest vibration energy level of first excited state and stablizes ground state, fluorescence is issued when releasing energy.
Fluorescent material contained in petroleum, mainly fragrant olefinic compound and contains conjugated double bond compound.Heterogeneity
Petroleum contained by fluorescent material type and ratio it is different, and every kind of fluorescent material can emit the fluorescence of particular spectral, thus
Under the conditions of identical excitation, the fluorescence spectrum of heterogeneity petroleum usually has a spectral signatures such as different intensity, color, and fluorescence
Intensity mainly depends on the concentration with fluorescent material contained by solution.
Fluorescence is a kind of instantaneous light, duration about 10-9—10-6s.Which electron excitation no matter molecule be excited to
State, 10-13—10-11The lowest vibration energy level of minimum excited electronic state can be all transitted in s through interior transfer and vibration relaxation
On, then by returning to ground state emission fluorescence, different fluorescent materials have different fluorescence emission spectrums.Petroleum and its spin-off contain
A variety of aromatic hydrocarbon with higher conjugation, thus there is strong absworption peak in ultraviolet region, when irradiation by ultraviolet light, meeting
Issue the fluorescence of near ultraviolet band and visible waveband.Type of the quantum efficiency of fluorescence depending on oil, the factors such as excitation wavelength, no
There is apparent difference with oil kind of a fluorescence spectrum.
2, the fluorescent characteristic of transformer oil ingredient：
Transformer oil is a kind of fraction products of petroleum, its main component be alkane, naphthene series's saturated hydrocarbons, aromatic series not
Saturated hydrocarbons and non-hydrocarbon compound composition, are light yellow clear liquid.Hyperfluorescence organic substance is structurally characterized in that molecule has just
Property planar structure, have big delocalized pi-bond.The pi-electron sigma electrons stable relative to saturated hydrocarbons, it is easier to be excited and project fluorescence.
And benzene just has this design feature, therefore in the ingredient of transformer oil, in addition to saturated hydrocarbons (alkane and cycloalkane) is not sent out glimmering
Outside light, other components have luminescence phenomenon, especially maximum with polycyclic aromatic hydrocarbon and nonhydrocarbon luminous intensity, and the ring of usually means processing
Aromatic hydrocarbon content is generally 8%-9% in alkyl transformer oil, and various aromatic compounds have its specific fluorescence spectrum, it is main
Content depending on each monomeric compound.Low number of rings aromatic hydrocarbon intensity is bigger, and the dominant wavelength of fluorescence spectrum is longer.And water, change
Depressor shell paint and common metal substance are not fluorescent materials, using this feature, can to transformer oil leakage scenarios into
Row detection.
3, detection method flow chart：
In conjunction with substation inspection, for different oil-immersed equipments, first carries out large area and search roughly, see whether there is indigo plant
Color fluorescence phenomenon, then the region of oily blue-fluorescence is accurately positioned, and according to the depth and range of blue-fluorescence, can determine whether
The severity at leakage of oil position and leakage, method flow such as Fig. 1.
Embodiment：After applying the present invention to substation inspection, so that the lookup time of leakage point shortens dramatically, improve
Leakage point searches accuracy rate and efficiency, it is ensured that leakage of oil hidden danger more early finds and excludes, and ensure that equipment safety operation, avoid because
Power outage caused by Leakage improves power supply reliability.In addition, can be used for solving to fuzzy oil level using the present invention
Identification problem.
Technical effect：1, it based on a large number of experiments and practical tour effect, demonstrates the transformer oil based on fluorescent effect and seeps
The feasibility of leak detection method, this method show leakage point by blue-fluorescence formal intuition, basic to solve to use tradition side
When method carries out transformer oil leak detection because leakage point it is unobvious caused by work time-consuming, the problem of low efficiency；Part solves oil
Immersion equipment oil level indicator causes the problem of being unfavorable for tour personnel's observation because of the reasons such as aging, dirty.
2, innovative that the method takes the lead in be applied to transformer oil leak detection in the industry in conjunction with this post feature
In.This method is directed to 110 kilovolts and following indoor oil-immersed transformer, is able to achieve each part leakage oil of transformer within the scope of 2 meters
On-site test, shorten leakage of oil search the time, improve working efficiency, moreover it is possible to working experience integration time is greatly decreased, substantially
Solve transformer oil leak detection work is influenced by working experience factor, and the accumulation that need to work long hours could improve search efficiency
The problem of.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (5)
1. a kind of transformer oil leakage detection method, which is characterized in that comprise the steps of：
A, flashlight is carried, glasses are worn；
B, a wide range of irradiating and detecting fluorescence area；
C, for several pieces of fluorescence areas found, the interference of other fluorescent materials is excluded, if being not interference, determination is leakage point,
It positions successfully；
D, continue next fluorescence area positioning to go through.
2. a kind of transformer oil leakage detection method according to claim 1, which is characterized in that the step B is specifically：
Ultraviolet source is adjusted to large spot mode, away from 1.5 meters of equipment radius, surrounding and the bottom surface of irradiation apparatus and its component, are examined respectively
Whether look into has Ultraluminescence phenomenon, detection structure be otherwise detection terminate, detection structure be to carry out accurate positioning lookup.
3. a kind of transformer oil leakage detection method according to claim 1, which is characterized in that the step C is specifically：
Close to phosphor region in safe distance, ultraviolet source reduces hot spot to fluorescence area size, and multi-angle irradiation observation, checking whether is
The interference of other fluorescent materials, detection structure are the success of otherwise spilling point, and detection structure is to be, detection terminates.
4. a kind of transformer oil leakage detection method according to claim 1, which is characterized in that the flashlight is ultraviolet
Light lamp or ultraviolet light flashlight.
5. a kind of transformer oil leakage detection method according to claim 1, which is characterized in that the glasses are ultraviolet anti-
Protective spectacles.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110174220A (en) * | 2019-07-03 | 2019-08-27 | 云南电网有限责任公司电力科学研究院 | A kind of on-load tap changers of transformers leakage of oil detection system and method |
| CN110174223A (en) * | 2019-07-03 | 2019-08-27 | 云南电网有限责任公司电力科学研究院 | A kind of transformer body leakage of oil area detection system and method |
| CN110174221A (en) * | 2019-07-03 | 2019-08-27 | 云南电网有限责任公司电力科学研究院 | A kind of transformer body leakage of oil status monitoring appraisal procedure and system |
| CN110346093A (en) * | 2019-06-14 | 2019-10-18 | 广西电网有限责任公司电力科学研究院 | Oil-immersed sleeve pipe leakage of oil detection system and method based on intelligent patrol detection platform |
| CN111044224A (en) * | 2019-12-30 | 2020-04-21 | 深圳供电局有限公司 | Method for identifying and detecting transformer by patrol trolley |
| CN111693221A (en) * | 2019-12-05 | 2020-09-22 | 摩登汽车有限公司 | Waterproof test method and equipment for automobile electrical equipment |
| CN114062224A (en) * | 2021-11-19 | 2022-02-18 | 广东电网有限责任公司广州供电局 | Oil leakage oil detection system and method for oil-immersed power equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110346093A (en) * | 2019-06-14 | 2019-10-18 | 广西电网有限责任公司电力科学研究院 | Oil-immersed sleeve pipe leakage of oil detection system and method based on intelligent patrol detection platform |
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| CN111693221A (en) * | 2019-12-05 | 2020-09-22 | 摩登汽车有限公司 | Waterproof test method and equipment for automobile electrical equipment |
| CN111044224A (en) * | 2019-12-30 | 2020-04-21 | 深圳供电局有限公司 | Method for identifying and detecting transformer by patrol trolley |
| CN114062224A (en) * | 2021-11-19 | 2022-02-18 | 广东电网有限责任公司广州供电局 | Oil leakage oil detection system and method for oil-immersed power equipment |
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Application publication date: 20181120 |