CN106124701A - Power transformer performance monitoring system - Google Patents
Power transformer performance monitoring system Download PDFInfo
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- CN106124701A CN106124701A CN201610449963.9A CN201610449963A CN106124701A CN 106124701 A CN106124701 A CN 106124701A CN 201610449963 A CN201610449963 A CN 201610449963A CN 106124701 A CN106124701 A CN 106124701A
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- furfural content
- furfural
- adsorbent
- insulating paper
- transformer
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 13
- HYBBIBNJHNGZAN-UHFFFAOYSA-N furfural Chemical compound O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 claims abstract description 290
- 239000003463 adsorbent Substances 0.000 claims abstract description 57
- 230000032683 aging Effects 0.000 claims abstract description 35
- 230000015556 catabolic process Effects 0.000 claims abstract description 24
- 238000000354 decomposition reaction Methods 0.000 claims abstract description 23
- 238000006731 degradation reaction Methods 0.000 claims abstract description 23
- 238000001179 sorption measurement Methods 0.000 claims abstract description 23
- 230000008859 change Effects 0.000 claims description 8
- 238000010521 absorption reaction Methods 0.000 claims description 6
- 230000009466 transformation Effects 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 238000009413 insulation Methods 0.000 description 13
- 238000000034 method Methods 0.000 description 10
- 238000006116 polymerization reaction Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000001913 cellulose Substances 0.000 description 3
- 229920002678 cellulose Polymers 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 150000001299 aldehydes Chemical class 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000002431 foraging effect Effects 0.000 description 1
- -1 furfuran compound Chemical class 0.000 description 1
- 238000004128 high performance liquid chromatography Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Housings And Mounting Of Transformers (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
Power system transformer insulating paper performance monitoring system, by being measured for the furfural content of insulating paper degradation and decomposition in transformator, determines insulating paper degree of aging；Described transformator includes that thermal siphon filter, described thermal siphon filter include adsorbent；Described adsorbent can adsorb the furfural in transformer oil；Adsorption equilibrium is reached by being preset in respectively in the insulating oil of the first furfural content and the second furfural content by adsorbent, thus determine, when the first furfural content and the second furfural content, the furfural content that insulating paper is aging accurately, insulating paper can be accurately determined aging, it is achieved transformer performance early warning.
Description
Technical field
The present invention relates to the detection of a kind of insulating paper, especially relate to the aging early warning system of transformer insulating paper.
Summary of the invention
Insulating paper is one of predominating insulation of oil-immersed type transformer, including: insulating paper, insulation board, felt pad, insulation
Volume, insulated binding band etc., its main component is cellulose, and chemical expression is (C6H10O6) n, and in formula, n is the degree of polymerization.Macroscopic view
Cellulose there is breathability, water absorption and oil absorption, breakdown strength, mechanical strength and thermostability are the highest, are dried after immersion oil,
It is remarkably improved its electric property.
Insulating paper, during using, is affected by comprehensive function hot, mechanical, electric, it may occur that a series of for a long time
Chemical Physics changes, and causes the mechanical performance of insulating paper and electric property to be gradually lowered, and this process is referred to as the old of insulating paper
Change.Transformer oil Aging of Oil-paper Insulation in Oil is irreversible chemical reaction process.After transformer oil ageing can through oil strain, change oil process extensive
Its insulating properties multiple, but insulating paper is because of replacement operation difficulty, therefore runs the master of the problem that is likely to occur the most continuously at transformator
If the ageing of performance of insulating paper, the bulk life time of transformator depends primarily on the life-span of insulating paper.
The degree of polymerization is the index that can characterize insulating paper degree of aging, and it inherently discloses the ageing process of insulating paper
And the order of severity.At present the recognized standard is degree of polymerization when dropping to 500, and insulating paper is in the mid-term of insulation life；When under it
When being down to 250, it is believed that insulation life terminates；When dropping to 150, insulating paper mechanical strength is almost nil.In prior art, as
200810040656.0 patent of invention disclose the method that this detection by insulation paper polymerization degree determines transformer life.
But, insulation paper polymerization degree detection needs to gather inside transformer insulating paper sample, needs to have a power failure when sampling, belongs to destructive
Detection, so degree of polymerization method of testing is not a kind of effective monitoring method.
Furfural is a kind of furfuran compound produced in transformer insulating paper ageing process, in the properly functioning temperature of transformator
It is liquid in the range of degree, has proven in transformer insulating paper combined insulation system furfural in oil and be derived only from cellulose insulation paper
Degradation and decomposition.Therefore, utilize mensuration insulating paper degradation and decomposition and enter the furfural content in insulating oil to judge insulator
Insulation ag(e)ing degree has become as a kind of universal method.201410314162.2 disclosure of the invention by measuring furfural content
Determine the appraisal procedure of electric power transformer insulated paper ageing state.But, this inventive technique scheme disadvantageously, for exist
The power transformer of thermal siphon filter, adsorbent therein can adsorb the furfural in insulating oil, causes can not measuring truly
Furfural content.
In order to solve above-mentioned technical problem, in the patent of invention of 201610310410.5, it is proposed that one can reduce
The ageing management system of the transformer insulating paper of adsorbent impact, by presetting the furfural of certain concentration in insulating oil, makes heat
The adsorbent of siphon filter reaches adsorption equilibrium in this concentration, thus reduces the adsorbent absorption for furfural, is measuring
During the furfural content of insulating paper degradation and decomposition, the furfural content measured in transformer oil is used to deduct the bran preset in transformer oil
Aldehyde concentration is as the measured value of the furfural content of insulating paper degradation and decomposition.Pass through said method, it is possible to reduce adsorbent bran
The measurement error that aldehyde causes, improves the accuracy measured.But, this detecting system needs to preset spy in transformer insulation oil
Determine the furfural of concentration, and the furfural preset may affect the insulating properties of transformator, and along with furfural content in insulating oil
Raising, adsorbent is also possible to adsorb a small amount of furfural, causes the furfural content measuring insulating paper degradation and decomposition smaller actual value.
The invention provides the ageing management system of the insulating paper of a kind of improvement, it is possible to do not preset in transformer insulation oil
In the case of furfural, it is also possible to determine furfural content accurately, and eliminate the adsorbent impact for furfural.
Summary of the invention
As one aspect of the present invention, it is provided that a kind of power system transformer performance monitoring system, by for becoming
In depressor, the furfural content of insulating paper degradation and decomposition is measured, and determines insulating paper degree of aging；Described transformator includes hot rainbow
Being drawn through filter, described thermal siphon filter includes adsorbent；Described adsorbent can adsorb the furfural in transformer oil；Including becoming
Depressor oil measuring unit, it is for measuring the furfural content in transformer oil；It is characterized in that: adsorbent the first concentration arranges list
Unit, described adsorbent the first concentration arranges unit first can be arranged at the transformer oil mesopodium of the first furfural content by this adsorbent
Enough long-time so that it is in the transformer oil of this first furfural content, to reach adsorption equilibrium；Adsorbent the second concentration arranges unit,
Described adsorbent the second concentration arranges unit and can be first arranged in the transformer oil of the second furfural content by this adsorbent enough
For a long time so that it is in the transformer oil of this second furfural content, reach adsorption equilibrium；First concentration determines unit, at transformator
Before operation, the adsorbent reaching adsorption equilibrium is arranged in thermal siphon filter, when described transformation in the first furfural content
When furfural content value in device oil measuring unit mensuration transformer oil is the first furfural content, described first concentration determines that unit is true
The furfural content of fixed described insulating paper degradation and decomposition is the first furfural content；Second concentration determines unit, at described transformer oil
In furfural content value reach the first furfural content after, will described first furfural content reach adsorption equilibrium adsorbent change
For described second furfural content reaches the adsorbent of adsorption equilibrium, in described transformer oil measuring unit measures transformer oil
Furfural content value when being the second furfural content, described second concentration determines that unit determines the furfural of described insulating paper degradation and decomposition
Concentration is the second furfural content.
Preferably, described transformator, when bringing into operation, does not inject furfural, in its transformer oil in its transformer oil
Furfural content is zero.
Preferably, described first furfural content is the initial concentration of insulating paper mittlere alterung；Described second furfural content is
The initial concentration that the insulating paper degree of depth is aging.
Preferably, described first furfural content is 0.5mg/L, and described second furfural content is 4mg/L.
Preferably, described adsorbent is silica gel.
Preferably, including the aging prewarning unit of mittlere alterung prewarning unit and the degree of depth, determining that described insulating paper is aging
When the furfural content decomposed reaches the first furfural content, described mittlere alterung prewarning unit is given at the performance of transformer insulating paper
Early warning in mittlere alterung；When the furfural content determining described insulating paper degradation and decomposition reaches the second furfural content, described deeply
Spend aging prewarning unit to provide transformer insulating paper performance and be in the early warning that the degree of depth is aging.
Preferably, including temperature control system, it makes described adsorbent preset unit to make adsorbent reach adsorption equilibrium
During, it is maintained at specific temperature.
Preferably, the temperature range of transformer oil during described specific temperature is positioned at described transformator normal course of operation.
Preferably, described specific temperature is set to 60,65 or 70 degree.
Preferably, described thermal siphon filter arranges temperature sensor and timer, only in described temperature sensor
After determining that the temperature of described thermal siphon filter is maintained for more than special time near described specific temperature, just use described change
Depressor oil measuring unit measures the furfural content in transformer oil.
Preferably, near described specific temperature be described specific temperature the most twice.
Preferably, described special time is the transformer oil time needed for one cycle period of transformator.
Detailed description of the invention
In order to be illustrated more clearly that technical scheme, below the present invention is situated between by use embodiment simply
Continue, it should be apparent that, in describing below is only one embodiment of the present of invention, comes for those of ordinary skill in the art
Say, on the premise of not paying creative work, it is also possible to obtain other technical scheme according to these embodiments, fall within
Disclosure of the invention scope.
The power system transformer performance monitoring system of the embodiment of the present invention, by for aging point of insulating paper in transformator
The concentration of furfural in insulating oil that enters solved is measured, and determines insulating paper degree of aging.By the degree of aging of insulating paper, really
Determine the life cycle residing for transformator.
The technical scheme is that the aging detecting system qualitatively of insulating paper, based on following principle, run at transformator
Before so that it is in adsorbent be in the adsorption equilibrium of the first furfural content, this first furfural content can be such as insulating paper
Furfural content during mittlere alterung, such as 0.5mg/L.When transformator runs, the initial furfural content in its transformer oil is
Zero, the furfural in adsorbent has partial detachment, and the furfural content in the transformer oil now measured can not react insulating paper
The furfural content of degradation and decomposition.Along with the carrying out that insulating paper in transformator is aging, in insulating oil, furfural content is gradually increased, when it
When concentration reaches the first furfural content, adsorbent reaches adsorption equilibrium, reaches first owing to being originally just adsorbed with in this adsorbent
The furfural of furfural content adsorption equilibrium state, it is old that the furfural content in the transformer oil now measured is accurate response insulating paper
Change the value of the furfural content decomposed, therefore completely eliminate the adsorbent impact for furfural；Now, insulating paper degradation and decomposition
Furfural content is the first furfural content, provides insulating paper mittlere alterung early warning.Furfural content in transformer oil reaches first
After furfural content, adsorbent is replaced by the adsorbent reaching adsorption equilibrium in the second furfural content, this second furfural content
Furfural content when can be that such as the insulating paper degree of depth is aging, such as 4mg/L；With upper in like manner, measure transformer oil in
Furfural content reaches to represent during the second furfural content that the furfural content of insulating paper degradation and decomposition reaches the second furfural content.
Concrete, the power system transformer performance evaluation system of the present invention, including adsorbent the first concentration, unit is set,
Adsorbent the second concentration arranges unit, temperature control system, transformer oil measuring unit, and the first concentration determines unit, and second is dense
Degree determines unit, the aging prewarning unit of mittlere alterung prewarning unit, the degree of depth and temperature sensor.Wherein, transformator comprises
Thermal siphon filter, is provided with adsorbent in thermal siphon filter, and this adsorbent can adsorb the furfural in insulating oil, thus shadow
Ring and the furfural in insulating oil is measured.
Adsorbent the first concentration arranges unit, before this adsorbent is added thermal siphon filter, first passes through this suction
In the attached dose of transformer oil being arranged at the first furfural content the most long-time so that it is in the transformer oil of this concentration, reach absorption
Balance.Adsorbent the second concentration arranges unit, is arranged at by adsorbent in the transformer oil of the second furfural content enough long-time,
It is made to reach adsorption equilibrium in the transformer oil of this concentration.Wherein, this first furfural content can be such as insulating paper moderate
Furfural content time aging, such as 0.5mg/L.Furfural when this second furfural content can be that such as the insulating paper degree of depth is aging is dense
Degree, such as 4mg/L.
Preferably, during making adsorbent reach adsorption equilibrium, it is possible to use temperature control system makes this adsorb
Journey is maintained at specific temperature, and this specific temperature is positioned at the temperature range of transformer oil in transformator normal course of operation.Example
As this specified temp being set to 65 degree.
Transformer oil measuring unit is for detecting the furfural in transformer oil.Sampling in transformator can be set
Passage, obtains transformer oil sample by this sampling passage, and transformer oil measuring unit is by for this transformer oil sample
Measure and may determine that the furfural content in transformer oil, furfural content can be determined by such as high performance liquid chromatography.
The power system transformer performance monitoring system of the present invention also includes that the first concentration determines that unit and the second concentration are true
Cell.Before transformator runs, the adsorbent reaching adsorption equilibrium is arranged at thermal siphon filters in the first furfural content
In device, when the furfural content value during transformer oil measuring unit measures transformer oil is the first furfural content, the first concentration is true
Cell determines that the furfural content of transformer insulating paper degradation and decomposition is the first furfural content.Furfural content in transformer oil
After value reaches the first furfural content, adsorbent is replaced by the adsorbent reaching adsorption equilibrium in the second furfural content, works as change
When furfural content value in depressor oil measuring unit mensuration transformer oil is the second furfural content, the second concentration determines that unit determines
The furfural content of transformer insulating paper degradation and decomposition is the second furfural content.
The power system transformer performance monitoring system of the present invention, also includes that mittlere alterung prewarning unit and the degree of depth are aging
Prewarning unit.When the furfural content determining insulating paper degradation and decomposition reaches the first furfural content, mittlere alterung prewarning unit is given
The performance going out transformer insulating paper is in the early warning of mittlere alterung；Reach at the furfural content determining described insulating paper degradation and decomposition
During the second furfural content, the aging prewarning unit of the described degree of depth provides transformer insulating paper performance and is in the early warning that the degree of depth is aging.
Preferably, owing to the equilibrium adsorption performance of adsorbent can produce change along with temperature, lead to reduce variations in temperature
The impact that the furfural content caused is measured, can be arranged on temperature sensor in thermal siphon filter, only in temperature sensor
The temperature determining thermal siphon filter is the specified temp that adsorbent presets during unit makes adsorbent reach adsorption equilibrium
Time, just use transformer oil measuring unit to measure the furfural content in transformer oil.By in the transformer oil that now measures
Furfural content, determines the furfural content of insulating paper degradation and decomposition, it is possible to reduce the temperature impact for furfural content.Further
, owing to the equilibrium adsorption of adsorbent stably needs the regular hour, timer can be set, only determine in temperature sensor
After the temperature of thermal siphon filter is maintained for more than special time near specific temperature, described transformer oil is just used to measure single
Unit measures the furfural content in transformer oil.Preferably, near specific temperature be wherein described specific temperature the most twice,
Special time is the transformer oil time needed for one cycle period of transformator.
Above example is only in order to illustrate that technical scheme is not intended to limit, although with reference to above-described embodiment pair
The present invention has been described in detail, and those of ordinary skill in the field are it is understood that still can concrete to the present invention
Embodiment is modified or equivalent, and without departing from any amendment of spirit and scope of the invention or equivalent,
It all should be contained in the middle of scope of the presently claimed invention.
Claims (5)
1. power system transformer performance monitoring system, by carrying out for the furfural content of insulating paper degradation and decomposition in transformator
Measure, determine insulating paper degree of aging；Described transformator includes that thermal siphon filter, described thermal siphon filter include absorption
Agent；Described adsorbent can adsorb the furfural in transformer oil；Including transformer oil measuring unit, it is used for measuring transformer oil
In furfural content；It is characterized in that: adsorbent the first concentration arranges unit, and described adsorbent the first concentration arranges unit can
First this adsorbent is arranged in the transformer oil of the first furfural content the most long-time so that it is in the change of this first furfural content
Depressor oil reaches adsorption equilibrium；Adsorbent the second concentration arranges unit, and described adsorbent the second concentration arranges unit can be first
This adsorbent is arranged in the transformer oil of the second furfural content the most long-time so that it is in the transformation of this second furfural content
Device oil reaches adsorption equilibrium；First concentration determines unit, before transformator runs, will reach absorption in the first furfural content
The adsorbent of balance is arranged in thermal siphon filter, and the furfural in described transformer oil measuring unit measures transformer oil is dense
When angle value is the first furfural content, described first concentration determines that unit determines that the furfural content of described insulating paper degradation and decomposition is
One furfural content；Second concentration determines unit, after the furfural content value in described transformer oil reaches the first furfural content, and will
Described first furfural content reaches the adsorbent of adsorption equilibrium be replaced by described second furfural content and reach adsorption equilibrium
Adsorbent, when the furfural content value during described transformer oil measuring unit measures transformer oil is the second furfural content, described
Second concentration determines that unit determines that the furfural content of described insulating paper degradation and decomposition is the second furfural content.
Power transformer performance monitoring system the most according to claim 1, it is characterised in that: described transformator is starting fortune
During row, the furfural content in described transformer oil is zero.
Power system transformer performance monitoring system the most according to claim 2, it is characterised in that: described first furfural is dense
Degree is the initial concentration of insulating paper mittlere alterung；Described second furfural content is the initial concentration that the insulating paper degree of depth is aging.
Power system transformer performance monitoring system the most according to claim 3, it is characterised in that: described first furfural is dense
Degree is 0.5mg/L, and described second furfural content is 4mg/L.
Power system transformer performance monitoring system the most according to claim 4, it is characterised in that: include that mittlere alterung is pre-
Alert unit and the aging prewarning unit of the degree of depth, reach the first furfural content at the furfural content determining described insulating paper degradation and decomposition
Time, the performance that described mittlere alterung prewarning unit provides transformer insulating paper is in the early warning of mittlere alterung；Determine described absolutely
When the furfural content of edge paper degradation and decomposition reaches the second furfural content, the aging prewarning unit of the described degree of depth provides transformer insulating paper
Performance is in the early warning that the degree of depth is aging.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610449963.9A CN106124701B (en) | 2016-06-21 | 2016-06-21 | Power transformer performance monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610449963.9A CN106124701B (en) | 2016-06-21 | 2016-06-21 | Power transformer performance monitoring system |
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| CN106124701B CN106124701B (en) | 2018-06-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2020224666A3 (en) * | 2019-05-05 | 2020-12-30 | 西安热工研究院有限公司 | Regenerative capability evaluation method for industrial lubricant regenerative adsorbent |
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| CN106124701B (en) | 2018-06-26 |
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