CN108229095A - The Forecasting Methodology and terminal device of oil dissolved gas volume fraction - Google Patents
The Forecasting Methodology and terminal device of oil dissolved gas volume fraction Download PDFInfo
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- CN108229095A CN108229095A CN201810106909.3A CN201810106909A CN108229095A CN 108229095 A CN108229095 A CN 108229095A CN 201810106909 A CN201810106909 A CN 201810106909A CN 108229095 A CN108229095 A CN 108229095A
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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16C—COMPUTATIONAL CHEMISTRY; CHEMOINFORMATICS; COMPUTATIONAL MATERIALS SCIENCE
- G16C20/00—Chemoinformatics, i.e. ICT specially adapted for the handling of physicochemical or structural data of chemical particles, elements, compounds or mixtures
- G16C20/30—Prediction of properties of chemical compounds, compositions or mixtures
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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16C—COMPUTATIONAL CHEMISTRY; CHEMOINFORMATICS; COMPUTATIONAL MATERIALS SCIENCE
- G16C20/00—Chemoinformatics, i.e. ICT specially adapted for the handling of physicochemical or structural data of chemical particles, elements, compounds or mixtures
- G16C20/10—Analysis or design of chemical reactions, syntheses or processes
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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16C—COMPUTATIONAL CHEMISTRY; CHEMOINFORMATICS; COMPUTATIONAL MATERIALS SCIENCE
- G16C60/00—Computational materials science, i.e. ICT specially adapted for investigating the physical or chemical properties of materials or phenomena associated with their design, synthesis, processing, characterisation or utilisation
Abstract
The present invention is suitable for dissolved gas monitoring technical field, provides a kind of Forecasting Methodology and terminal device of oil dissolved gas volume fraction.This method includes：Obtain respectively first time point under nonequilibrium condition, the second time point and during third time point in gas chamber gas component volume fraction；According to the volume fraction of gas component in the corresponding volume fraction of the first time point, second time point corresponding volume fraction, the third time point corresponding volume fraction and volume fraction predictor formula calculated equilibrium state lower chamber.The volume fraction of gas component that the present invention can be arrived according to multi collect under nonequilibrium condition, predict the end value of the gas component volumes score in equilibrium state gas chamber, it need not wait for and penetrate into the volume fraction that equilibrium state measures gas in gas chamber again later, so as to reduce the time measured needed for oil dissolved gas volume fraction.
Description
Technical field
The invention belongs to dissolved gas monitoring technical field more particularly to a kind of predictions of oil dissolved gas volume fraction
Method and terminal device.
Background technology
With power grid develop to increasingly automated direction it is higher and higher with requirement of the national economy to power supply reliability, urgently
It needs to change existing maintenance of equipment system, the CBM System Based based on on-line monitoring and fault diagnosis technology
Gradually the development trend of substitution preventative maintenance system has become inevitable.From the oil-filled power equipment operational reliability such as transformer
From the point of view of importance is compared with the price of traditional on-Line Monitor Device, had significantly in Technological Economy using on-Line Monitor Device
Advantage had not only improved the management level of substation operation but also can have been established to be transitioned into pre-emptive maintenace system from preventative maintenance system
Fixed basis.
The failure gas of oil-filled power equipment is dissolved in after generating in insulating oil, and in oil dissolved gas on-line monitoring
Key technology includes Oil-gas Separation technology and gas quantitative analysis tech.On-line monitoring system needs to reach in gas infiltration at present
The exact volume score of oil dissolved gas can be just provided after balance, due to the limitation of Oil-gas Separation technology, failure gas reaches
Time needed for balance is often longer.Such as Roland Gilbert are to the gas collecting apparatus GP100 of Morgan Schaffer companies
The permeance property of various failure gas is tested, wherein H2Just reach balance after 6h, and need equilibration time most
Long C3H8Balance is reached after 239.3h, remaining gas has reached balance within 96h；Li Honglei of Tsinghua University etc.
A kind of Novel oil gas seperation film that people develops, the Oil-gas Separation film realize C in 12h2H2、C2H4、C2H6、CH4、CO、CO2、
H2The balance of totally 7 kinds of failure gas.But the time that failure gas reaches needed for balance is still longer, it is difficult to meet oil-filled electric power and set
The real-time demand of standby dissolved gas on-line monitoring.
Invention content
In view of this, an embodiment of the present invention provides the Forecasting Methodology and terminal device of oil dissolved gas volume fraction,
It is difficult to meet asking for oil-filled power equipment dissolved gas on-line monitoring real-time demand to solve current volume fraction Forecasting Methodology
Topic.
The first aspect of the embodiment of the present invention provides the Forecasting Methodology of oil dissolved gas volume fraction, including：
Gas component in gas chamber when obtaining first time point, the second time point and third time point under nonequilibrium condition respectively
Volume fraction；Interval between wherein described first time point and second time point is equal to second time point and institute
State the interval between third time point；Gas in the gas chamber is by Oil-gas Separation film to solution gas in oil-filled power equipment oil
Body carries out isolated；
According to the corresponding volume fraction of the first time point, second time point corresponding volume fraction, described
The volume of gas component point in three time points corresponding volume fraction and volume fraction predictor formula calculated equilibrium state lower chamber
Number.
The second aspect of the embodiment of the present invention provides the prediction meanss of oil dissolved gas volume fraction, including：
Acquisition module, during for obtaining first time point under nonequilibrium condition, the second time point and third time point respectively
The volume fraction of gas component in gas chamber；Interval between wherein described first time point and second time point is equal to described
Interval between second time point and the third time point；Gas in the gas chamber is by Oil-gas Separation film to oil-filled electric power
Equipment oil dissolved gas carries out isolated；
Processing module, for according to the corresponding volume fraction of the first time point, second time point corresponding body
Gas in fraction, the third time point corresponding volume fraction and volume fraction predictor formula calculated equilibrium state lower chamber
The volume fraction of component.
The third aspect of the embodiment of the present invention provides terminal device, including memory, processor and is stored in described
In memory and the computer program that can run on the processor, the processor are realized when performing the computer program
The Forecasting Methodology of oil dissolved gas volume fraction in first aspect.
The fourth aspect of the embodiment of the present invention provides computer readable storage medium, the computer readable storage medium
Computer program is stored with, the oil dissolved gas volume in first aspect is realized when the computer program is executed by processor
The Forecasting Methodology of score.
Existing advantageous effect is the embodiment of the present invention compared with prior art：By to first time under nonequilibrium condition
The corresponding volume fraction of point, the second time point corresponding volume fraction, third time point corresponding volume fraction and volume fraction
Predictor formula is calculated, and can predict the volume fraction of gas component in equilibrium state lower chamber, so as to fulfill molten in oil
Solve the prediction of gas volume fraction.The body of gas component that the embodiment of the present invention can be arrived according to multi collect under nonequilibrium condition
Fraction predicts the end value of the gas component volumes score in equilibrium state gas chamber, it is not necessary to which waiting penetrates into equilibrium-like
The volume fraction of gas in gas chamber is measured after state again, so as to reduce the time measured needed for oil dissolved gas volume fraction,
Meets the needs of oil-filled power equipment dissolved gas on-line monitoring real-time.
Description of the drawings
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description be only the present invention some
Embodiment, for those of ordinary skill in the art, without having to pay creative labor, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is the realization flow chart of the Forecasting Methodology of oil dissolved gas volume fraction provided in an embodiment of the present invention；
Fig. 2 be oil dissolved gas volume fraction provided in an embodiment of the present invention Forecasting Methodology in adjustment preset time between
Every realization flow chart；
Fig. 3 is the schematic diagram of the prediction meanss of oil dissolved gas volume fraction provided in an embodiment of the present invention；
Fig. 4 is the schematic diagram of the prediction terminal device of oil dissolved gas volume fraction provided in an embodiment of the present invention.
Specific embodiment
In being described below, in order to illustrate rather than in order to limit, it is proposed that such as tool of particular system structure, technology etc
Body details, to understand thoroughly the embodiment of the present invention.However, it will be clear to one skilled in the art that there is no these specifically
The present invention can also be realized in the other embodiments of details.In other situations, it omits to well-known system, device, electricity
Road and the detailed description of method, in case unnecessary details interferes description of the invention.
In order to illustrate technical solutions according to the invention, illustrated below by specific embodiment.
Fig. 1 is the realization flow chart of the Forecasting Methodology of oil dissolved gas volume fraction provided in an embodiment of the present invention, in detail
It states as follows：
In S101, gas chamber when obtaining first time point, the second time point and third time point under nonequilibrium condition respectively
The volume fraction of middle gas component；Interval between wherein described first time point and second time point is equal to described second
Interval between time point and the third time point；Gas in the gas chamber is by Oil-gas Separation film to oil-filled power equipment
Oil dissolved gas carries out isolated.
In the present embodiment, oil-filled power equipment oil dissolved gas is carried out in separation process using Oil-gas Separation film,
It is at the beginning nonequilibrium condition, the dissolved gas in oil is permeated by gas chamber of the Oil-gas Separation film constantly above oil reservoir.Work as oil
After gas in neutralization gas chamber reaches equilibrium state, each gas component almost no longer changes in gas chamber, enters equilibrium-like at this time
State.Gas can include multiple gas components in gas chamber, such as can include hydrogen H2, carbon monoxide CO, carbon dioxide CO2With
Methane CH4It can be used for respectively carrying out the volume fraction of each gas component Deng, Forecasting Methodology provided in an embodiment of the present invention
Prediction is illustrated for predicting the volume fraction of a certain gas component below.
First time point, the second time point and third time point are chosen under nonequilibrium condition, acquires three times respectively
Point when gas chamber in certain gas component volume fraction.For example, the corresponding volume fraction of acquisition first time point first, then every
Same time interval acquires the second time point corresponding volume fraction and third time point corresponding volume fraction respectively.
In S102, according to the corresponding volume fraction of the first time point, second time point corresponding volume point
Gas component in several, described third time point corresponding volume fraction and volume fraction predictor formula calculated equilibrium state lower chamber
Volume fraction.
In the present embodiment by the corresponding volume fraction of the first time point got, the second time point corresponding volume point
Number, third time point corresponding volume fraction are updated in volume fraction predictor formula and are calculated, and can calculate equilibrium-like
The volume fraction of the gas component in state lower chamber.According to each target gas component in the equilibrium state lower chamber predicted
Volume fraction can carry out oil-filled power equipment dissolved gas on-line monitoring.
The embodiment of the present invention is by corresponding to the corresponding volume fraction of first time point under nonequilibrium condition, the second time point
Volume fraction, third time point corresponding volume fraction and volume fraction predictor formula calculated, balance can be predicted
The volume fraction of gas component in state lower chamber, so as to fulfill the prediction of oil dissolved gas volume fraction.The present invention is implemented
The volume fraction of gas component that example can be arrived according to multi collect under nonequilibrium condition, predicts the gas in equilibrium state gas chamber
The end value of body volume components score, it is not necessary to wait for and penetrate into the volume point that equilibrium state measures gas in gas chamber again later
Number so as to reduce the time measured needed for oil dissolved gas volume fraction, meets oil-filled power equipment dissolved gas and supervises online
Survey the demand of real-time.
As one embodiment of the present of invention, the volume fraction predictor formula is：
Wherein,Volume fraction for gas component in equilibrium state lower chamber；Ci(n-1)For the first time point pair
The volume fraction answered；CinFor second time point corresponding volume fraction；Ci(n+1)For the third time point corresponding volume
Score.
As one embodiment of the present of invention, the calculating process of the volume fraction predictor formula is specially：
According to the volume fraction of gas component in gas chamber in the membrane separating process of oil dissolved gas：
Wherein, b is diffusion coefficient；T is the time after infiltration starts；CiDuring for t in gas chamber gas component volume fraction；
Obtain first time point t under nonequilibrium conditionn-1When gas chamber in gas component volume fraction and the second time point tn
When gas chamber in gas component volume fraction between relational expression：
Wherein, Δ t=tn-tn-1；Ci(n-1)For tn-1When gas chamber in gas component volume fraction；CinFor tnWhen gas chamber in
The volume fraction of gas component；
Intermediate computations formula is obtained according to the relational expression：
Wherein, Δ t=tn-tn-1=tn+1-tn；Ci(n+1)For third time point tn+1When gas chamber in gas component volume point
Number；
Abbreviation is carried out to the intermediate computations formula, obtains the volume fraction predictor formula as shown in formula (1).
The calculating process of volume fraction predictor formula is specifically described below.
By the analysis to Mechanism of permeation, dynamic process expression formula of the film to Oil-gas Separation, i.e. volume point can be obtained
The relational expressions that change over time of number, a certain gas component volumes score C in gas chamber in membrane separating processiChanging rule such as formula
(2) shown in.From formula (2) as can be seen that usually only when infiltration reach balanced gas volume measured value just it is valuable, this meaning
The measurement data that taste before equilibration time point is reached cannot all accurately reflect the volume fraction of oil dissolved gas.And this hair
The Forecasting Methodology that bright embodiment is provided can solve the problems, such as this.
Under nonequilibrium condition, for a certain gas component, if tn-1The volume fraction that point measures is Ci(n-1), tnPoint measures
Volume fraction be Cin, corresponding to volume fraction when this process of osmosis reaches balance at this time isThen there is following relationship：
Due to time point tn-1With tnAmong an independent process of osmosis, there is bn-1=bn=b, if time of measuring interval tn-
tn-1=Δ t, when temperature-resistant, the relationship as shown in formula (3) is set up.
T can similarly be obtainednThe volume fraction that point measures is CinAnd tn+1The volume fraction that point measures is Ci(n+1)Relational expression be：
Simultaneous formula (3) and formula (6) can obtain the intermediate computations formula shown in formula (4), final to intermediate calculating formula progress abbreviation
To the volume fraction predictor formula shown in formula (1).
As can be seen calculated from the above process, which cleverly eliminates diffusion coefficient b and volume fraction is predicted
As a result influence.Since the size of diffusion coefficient b is related with temperature and pressure, the volume fraction provided through the embodiment of the present invention
Predictor formula is predicted, can eliminate the influence of ambient temperature and pressure to prediction result, so as to improve volume fraction prediction
As a result accuracy.
The present embodiment can utilize the measurement of the gas component volumes score at the same time interval in same process of osmosis
Value is calculated, and in the case where not knowing diffusion coefficient b values, Accurate Prediction goes out the gas component body in equilibrium state lower chamber
The end value of fraction, it is not necessary to wait for and penetrate into the volume fraction that equilibrium state measures gas in gas chamber again later, so as to subtract
It is balanced the time of the gas component volumes score in state lower chamber less.
It is described to obtain under nonequilibrium condition first time point, the second time point respectively as one embodiment of the present of invention
Include with the volume fraction of gas component in gas chamber during third time point：
The volume fraction of gas component in a gas chamber is obtained under nonequilibrium condition every prefixed time interval, by adjacent three
The secondary volume fraction got as one group of gathered data, three volume fractions in each group gathered data sequentially in time according to
It is secondary as first time point, the second time point and third time point when gas chamber in gas component volume fraction；
It is described according to the corresponding volume fraction of the first time point, second time point corresponding volume fraction, institute
State the body of gas component in third time point corresponding volume fraction and volume fraction predictor formula calculated equilibrium state lower chamber
Fraction includes：
According to the corresponding volume fraction of first time point in each group gathered data, the second time point corresponding volume fraction,
Third time point corresponding volume fraction and the volume fraction predictor formula calculate the corresponding balance of each group gathered data respectively
The volume fraction of gas component in state lower chamber；
To each group gathered data, the volume fraction of gas component is averaged in corresponding equilibrium state lower chamber, will be described equal
It is worth the volume fraction as gas component in equilibrium state lower chamber.
For example, it is obtained when the infiltration of oil-filled power equipment is in nonequilibrium condition every prefixed time interval (such as 10 minutes)
Take the volume fraction of gas component in a gas chamber, if in chronological sequence sequence successively collected volume fraction for A, B, C, D,
E and F, the then gathered data divided can be four groups, be respectively specifically (A, B, C), (B, C, D), (C, D, E) and (D, E, F)；Or
The gathered data that person divides can be two groups, be respectively specifically (A, B, C) and (D, E, F).
It is corresponding flat that each group gathered data can be predicted according to each group gathered data and volume fraction predictor formula respectively
The volume fraction of gas component in weighing apparatus state lower chamber can obtain the corresponding volume fraction averaging of each group gathered data most
The volume fraction of gas component in whole equilibrium state lower chamber.
The present embodiment is averaged by the volume fraction predicted to multi collect data group, can reduce single data
Influence of the Acquisition Error to final prediction result further improves the pre- of the volume fraction of gas component in equilibrium state lower chamber
Survey accuracy.
As one embodiment of the present of invention, as shown in Fig. 2, described using the mean value as in equilibrium state lower chamber
After the volume fraction of gas component, it can also include：
In S201, it is online that oil dissolved gas is carried out according to the volume fraction of gas component each in equilibrium state lower chamber
Analysis.
It in the present embodiment, can be into according to the volume fraction of each gas component in the obtained equilibrium state lower chamber of prediction
Whether the on-line analysis of row oil dissolved gas analyzes oil-filled power equipment and breaks down and failure cause etc..For example, can be with
By the way that the volume fraction of gas component each in equilibrium state lower chamber is compared with default early warning value, judge that oil-filled electric power is set
It is standby whether to break down.
In S202, the prefixed time interval is adjusted according to oil dissolved gas on-line analysis result.
In the present embodiment, prefixed time interval can be adjusted according to the result of oil dissolved gas on-line analysis
It is whole, so as to the time predicted the volume fraction of each gas component in equilibrium state lower chamber after adjusting so that dissolved in oil
Gas on-line analysis result being capable of the significantly more efficient operating status for tracking the oil-filled power equipments such as transformer.For example, it can set
The first predetermined threshold value is put, if oil dissolved gas on-line analysis result is more than the first predetermined threshold value, characterizes oil-filled power equipment
It easily breaks down, the preset time time can be reduced, so as to shorten the volume point of each gas component in equilibrium state lower chamber
Several predicted times, avoiding the problem that predicted time is long causes oil-filled electrical equipment fault to fail to be found in time, more added with
The operating status of the oil-filled power equipments such as the tracking transformer of effect.
As one embodiment of the present of invention, the embodiment of the present invention is ground by being compared with offline gas chromatographic measurement
Study carefully, verify the validity and real-time of oil dissolved gas volume fraction prediction algorithm.It is more in equilibrium state lower chamber to obtain
The volume fraction of kind of gas component is respectively adopted offline gas chromatographic measurement, is predicted according to single group gathered data and root
It is averagely predicted according to multigroup gathered data, verification data comparison is as shown in table 1.
Table 1 verifies data comparison table
As can be seen from Table 1, the gas body under prediction equilibrium state is removed using the Forecasting Methodology that the embodiment of the present invention is mentioned
The accuracy of fraction is high, and the time is short, disclosure satisfy that oil dissolved gas on-line monitoring to volume fraction validity and promptness
Requirement.
The embodiment of the present invention is by corresponding to the corresponding volume fraction of first time point under nonequilibrium condition, the second time point
Volume fraction, third time point corresponding volume fraction and volume fraction predictor formula calculated, balance can be predicted
The volume fraction of gas component in state lower chamber, so as to fulfill the prediction of oil dissolved gas volume fraction.The present invention is implemented
The volume fraction of gas component that example can be arrived according to multi collect under nonequilibrium condition, predicts the gas in equilibrium state gas chamber
The end value of body volume components score, it is not necessary to wait for and penetrate into the volume point that equilibrium state measures gas in gas chamber again later
Number so as to reduce the time measured needed for oil dissolved gas volume fraction, meets oil-filled power equipment dissolved gas and supervises online
Survey the demand of real-time.
It should be understood that the size of the serial number of each step is not meant to the priority of execution sequence, each process in above-described embodiment
Execution sequence should determine that the implementation process without coping with the embodiment of the present invention forms any limit with its function and internal logic
It is fixed.
Corresponding to the Forecasting Methodology of the oil dissolved gas volume fraction described in foregoing embodiments, Fig. 3 shows the present invention
The schematic diagram of the prediction meanss for the oil dissolved gas volume fraction that embodiment provides.For convenience of description, it illustrates only and this
The relevant part of embodiment.
With reference to Fig. 3, which includes acquisition module 31 and processing module 32.
Acquisition module 31, for obtaining first time point under nonequilibrium condition, the second time point and third time point respectively
When gas chamber in gas component volume fraction；Interval between wherein described first time point and second time point is equal to institute
State the interval between the second time point and the third time point；Gas in the gas chamber is by Oil-gas Separation film to oil-filled electricity
Power equipment oil dissolved gas carries out isolated.
Processing module 32, for corresponding according to the corresponding volume fraction of the first time point, second time point
Gas in volume fraction, the third time point corresponding volume fraction and volume fraction predictor formula calculated equilibrium state lower chamber
The volume fraction of body component.
Preferably, the volume fraction predictor formula is：
Wherein,Volume fraction for gas component in equilibrium state lower chamber；Ci(n-1)For the first time point pair
The volume fraction answered；CinFor second time point corresponding volume fraction；Ci(n+1)For the third time point corresponding volume
Score.
Preferably, the calculating process of the volume fraction predictor formula is specially：
According to the volume fraction of gas component in gas chamber in the membrane separating process of oil dissolved gas：
Wherein, b is diffusion coefficient；T is the time after infiltration starts；CiDuring for t in gas chamber gas component volume fraction；
Obtain first time point t under nonequilibrium conditionn-1When gas chamber in gas component volume fraction and the second time point tn
When gas chamber in gas component volume fraction between relational expression：
Wherein, Δ t=tn-tn-1；Ci(n-1)For tn-1When gas chamber in gas component volume fraction；CinFor tnWhen gas chamber in
The volume fraction of gas component；
Intermediate computations formula is obtained according to the relational expression：
Wherein, Δ t=tn-tn-1=tn+1-tn；Ci(n+1)For third time point tn+1When gas chamber in gas component volume point
Number；
Abbreviation is carried out to the intermediate computations formula, obtains the volume fraction predictor formula.
Preferably, the acquisition module 31 is specifically used for：
The volume fraction of gas component in a gas chamber is obtained under nonequilibrium condition every prefixed time interval, by adjacent three
The secondary volume fraction got as one group of gathered data, three volume fractions in each group gathered data sequentially in time according to
It is secondary as first time point, the second time point and third time point when gas chamber in gas component volume fraction；
The processing module 32 is specifically used for：
According to the corresponding volume fraction of first time point in each group gathered data, the second time point corresponding volume fraction,
Third time point corresponding volume fraction and the volume fraction predictor formula calculate the corresponding balance of each group gathered data respectively
The volume fraction of gas component in state lower chamber；
To each group gathered data, the volume fraction of gas component is averaged in corresponding equilibrium state lower chamber, will be described equal
It is worth the volume fraction as gas component in equilibrium state lower chamber.
Preferably, which further includes adjustment module, and the adjustment module is used for：
Oil dissolved gas on-line analysis is carried out according to the volume fraction of gas component each in equilibrium state lower chamber；
The prefixed time interval is adjusted according to oil dissolved gas on-line analysis result.
The embodiment of the present invention is by corresponding to the corresponding volume fraction of first time point under nonequilibrium condition, the second time point
Volume fraction, third time point corresponding volume fraction and volume fraction predictor formula calculated, balance can be predicted
The volume fraction of gas component in state lower chamber, so as to fulfill the prediction of oil dissolved gas volume fraction.The present invention is implemented
The volume fraction of gas component that example can be arrived according to multi collect under nonequilibrium condition, predicts the gas in equilibrium state gas chamber
The end value of body volume components score, it is not necessary to wait for and penetrate into the volume point that equilibrium state measures gas in gas chamber again later
Number so as to reduce the time measured needed for oil dissolved gas volume fraction, meets oil-filled power equipment dissolved gas and supervises online
Survey the demand of real-time.
Fig. 4 is the schematic diagram for the terminal device that one embodiment of the invention provides.As shown in figure 4, the terminal of the embodiment is set
Standby 4 include：Processor 40, memory 41 and it is stored in the meter that can be run in the memory 41 and on the processor 40
Calculation machine program 42, such as the Prediction program of oil dissolved gas volume fraction.The processor 40 performs the computer program
The step in the Forecasting Methodology embodiment of above-mentioned each oil dissolved gas volume fraction, such as step shown in FIG. 1 are realized when 42
Rapid 101 to 102.Alternatively, the processor 40 realizes each mould in above-mentioned each device embodiment when performing the computer program 42
The function of block/unit, such as the function of module 31 to 32 shown in Fig. 3.
Illustratively, the computer program 42 can be divided into one or more module/units, it is one or
Multiple module/units are stored in the memory 41, and are performed by the processor 40, to complete the present invention.Described one
A or multiple module/units can be the series of computation machine program instruction section that can complete specific function, which is used for
Implementation procedure of the computer program 42 in the terminal device 4 is described.For example, the computer program 42 can be divided
Acquisition module and processing module are cut into, each module concrete function is as follows：
Acquisition module, during for obtaining first time point under nonequilibrium condition, the second time point and third time point respectively
The volume fraction of gas component in gas chamber；Interval between wherein described first time point and second time point is equal to described
Interval between second time point and the third time point；Gas in the gas chamber is by Oil-gas Separation film to oil-filled electric power
Equipment oil dissolved gas carries out isolated；
Processing module, for according to the corresponding volume fraction of the first time point, second time point corresponding body
Gas in fraction, the third time point corresponding volume fraction and volume fraction predictor formula calculated equilibrium state lower chamber
The volume fraction of component.
The terminal device 4 can be that the calculating such as desktop PC, notebook, palm PC and cloud server are set
It is standby.The terminal device may include, but be not limited only to, processor 40, memory 41.It will be understood by those skilled in the art that Fig. 4
The only example of terminal device 4 does not form the restriction to terminal device 4, can include than illustrating more or fewer portions
Part either combines certain components or different components, such as the terminal device can also include input-output equipment, net
Network access device, bus, display etc..
Alleged processor 40 can be central processing unit (Central Processing Unit, CPU), can also be
Other general processors, digital signal processor (Digital Signal Processor, DSP), application-specific integrated circuit
(Application Specific Integrated Circuit, ASIC), ready-made programmable gate array (Field-
Programmable Gate Array, FPGA) either other programmable logic device, discrete gate or transistor logic,
Discrete hardware components etc..General processor can be microprocessor or the processor can also be any conventional processor
Deng.
The memory 41 can be the internal storage unit of the terminal device 4, such as the hard disk of terminal device 4 or interior
It deposits.The memory 41 can also be the External memory equipment of the terminal device 4, such as be equipped on the terminal device 4
Plug-in type hard disk, intelligent memory card (Smart Media Card, SMC), secure digital (Secure Digital, SD) card dodge
Deposit card (Flash Card) etc..Further, the memory 41 can also both include the storage inside list of the terminal device 4
Member also includes External memory equipment.The memory 41 is used to store needed for the computer program and the terminal device
Other programs and data.The memory 41 can be also used for temporarily storing the data that has exported or will export.
It is apparent to those skilled in the art that for convenience of description and succinctly, only with above-mentioned each work(
Can unit, module division progress for example, in practical application, can be as needed and by above-mentioned function distribution by different
Functional unit, module are completed, i.e., the internal structure of described device are divided into different functional units or module, more than completion
The all or part of function of description.Each functional unit, module in embodiment can be integrated in a processing unit, also may be used
To be that each unit is individually physically present, can also two or more units integrate in a unit, it is above-mentioned integrated
The form that hardware had both may be used in unit is realized, can also be realized in the form of SFU software functional unit.In addition, each function list
Member, the specific name of module are not limited to the protection domain of the application also only to facilitate mutually distinguish.Above system
The specific work process of middle unit, module can refer to the corresponding process in preceding method embodiment, and details are not described herein.
In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, is not described in detail or remembers in some embodiment
The part of load may refer to the associated description of other embodiments.
Those of ordinary skill in the art may realize that each exemplary lists described with reference to the embodiments described herein
Member and algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually
It is performed with hardware or software mode, specific application and design constraint depending on technical solution.Professional technician
Described function can be realized using distinct methods to each specific application, but this realization is it is not considered that exceed
The scope of the present invention.
In embodiment provided by the present invention, it should be understood that disclosed device/terminal device and method, it can be with
It realizes by another way.For example, device described above/terminal device embodiment is only schematical, for example, institute
The division of module or unit is stated, only a kind of division of logic function can have other dividing mode in actual implementation, such as
Multiple units or component may be combined or can be integrated into another system or some features can be ignored or does not perform.Separately
A bit, shown or discussed mutual coupling or direct-coupling or communication connection can be by some interfaces, device
Or the INDIRECT COUPLING of unit or communication connection, can be electrical, machinery or other forms.
The unit illustrated as separating component may or may not be physically separate, be shown as unit
The component shown may or may not be physical unit, you can be located at a place or can also be distributed to multiple
In network element.Some or all of unit therein can be selected according to the actual needs to realize the mesh of this embodiment scheme
's.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it can also
That each unit is individually physically present, can also two or more units integrate in a 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 module/unit realized in the form of SFU software functional unit and be independent product sale or
In use, it can be stored in a computer read/write memory medium.Based on such understanding, the present invention realizes above-mentioned implementation
All or part of flow in example method, can also instruct relevant hardware to complete, the meter by computer program
Calculation machine program can be stored in a computer readable storage medium, the computer program when being executed by processor, it can be achieved that on
The step of stating each embodiment of the method.Wherein, the computer program includes computer program code, the computer program generation
Code can be source code form, object identification code form, executable file or certain intermediate forms etc..The computer-readable medium
It can include：Any entity of the computer program code or device, recording medium, USB flash disk, mobile hard disk, magnetic can be carried
Dish, CD, computer storage, read-only memory (ROM, Read-Only Memory), random access memory (RAM,
Random Access Memory), electric carrier signal, telecommunication signal and software distribution medium etc..It is it should be noted that described
The content that computer-readable medium includes can carry out appropriate increasing according to legislation in jurisdiction and the requirement of patent practice
Subtract, such as in certain jurisdictions, according to legislation and patent practice, computer-readable medium do not include be electric carrier signal and
Telecommunication signal.
Embodiment described above is merely illustrative of the technical solution of the present invention, rather than its limitations；Although with reference to aforementioned reality
Example is applied the present invention is described in detail, it will be understood by those of ordinary skill in the art that：It still can be to aforementioned each
Technical solution recorded in embodiment modifies or carries out equivalent replacement to which part technical characteristic；And these are changed
Or replace, the spirit and scope for various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution should all
It is included within protection scope of the present invention.
Claims (10)
1. a kind of Forecasting Methodology of oil dissolved gas volume fraction, which is characterized in that including：
Obtain respectively first time point under nonequilibrium condition, the second time point and during third time point in gas chamber gas component body
Fraction；Interval between wherein described first time point and second time point is equal to second time point and described the
Interval between three time points；Gas in the gas chamber by Oil-gas Separation film to oil-filled power equipment oil dissolved gas into
Row is isolated；
During according to the corresponding volume fraction of the first time point, second time point corresponding volume fraction, the third
Between put the volume fraction of gas component in corresponding volume fraction and volume fraction predictor formula calculated equilibrium state lower chamber.
2. the Forecasting Methodology of oil dissolved gas volume fraction as described in claim 1, which is characterized in that the volume fraction
Predictor formula is：
Wherein,Volume fraction for gas component in equilibrium state lower chamber；Ci(n-1)It is corresponding for the first time point
Volume fraction；CinFor second time point corresponding volume fraction；Ci(n+1)For the third time point corresponding volume point
Number.
3. the Forecasting Methodology of oil dissolved gas volume fraction as claimed in claim 2, which is characterized in that the volume fraction
The calculating process of predictor formula is specially：
According to the volume fraction of gas component in gas chamber in the membrane separating process of oil dissolved gas：
Wherein, b is diffusion coefficient；T is the time after infiltration starts；CiDuring for t in gas chamber gas component volume fraction；
Obtain first time point t under nonequilibrium conditionn-1When gas chamber in gas component volume fraction and the second time point tnWhen gas
Relational expression in room between the volume fraction of gas component：
Wherein, Δ t=tn-tn-1；Ci(n-1)For tn-1When gas chamber in gas component volume fraction；CinFor tnWhen gas chamber in gas group
The volume fraction divided；
Intermediate computations formula is obtained according to the relational expression：
Wherein, Δ t=tn-tn-1=tn+1-tn；Ci(n+1)For third time point tn+1When gas chamber in gas component volume fraction；
Abbreviation is carried out to the intermediate computations formula, obtains the volume fraction predictor formula.
4. the Forecasting Methodology of oil dissolved gas volume fraction as described in any one of claims 1 to 3, which is characterized in that institute
State the volume of gas component in gas chamber when obtaining first time point, the second time point and third time point under nonequilibrium condition respectively
Score includes：
The volume fraction of gas component in a gas chamber is obtained under nonequilibrium condition every prefixed time interval, is obtained adjacent three times
The volume fraction got as one group of gathered data, make successively sequentially in time by three volume fractions in each group gathered data
During for first time point, the second time point and third time point in gas chamber gas component volume fraction；
It is described according to the corresponding volume fraction of the first time point, second time point corresponding volume fraction, described
The volume of gas component point in three time points corresponding volume fraction and volume fraction predictor formula calculated equilibrium state lower chamber
Number includes：
According to the corresponding volume fraction of first time point, the second time point corresponding volume fraction, third in each group gathered data
Time point corresponding volume fraction and the volume fraction predictor formula calculate the corresponding equilibrium state of each group gathered data respectively
The volume fraction of gas component in lower chamber；
To each group gathered data, the volume fraction of gas component is averaged in corresponding equilibrium state lower chamber, and the mean value is made
Volume fraction for gas component in equilibrium state lower chamber.
5. the Forecasting Methodology of oil dissolved gas volume fraction as claimed in claim 4, which is characterized in that described by described in
After volume fraction of the mean value as gas component in equilibrium state lower chamber, further include：
Oil dissolved gas on-line analysis is carried out according to the volume fraction of gas component each in equilibrium state lower chamber；
The prefixed time interval is adjusted according to oil dissolved gas on-line analysis result.
6. a kind of prediction meanss of oil dissolved gas volume fraction, which is characterized in that including：
Acquisition module, gas chamber during for obtaining first time point under nonequilibrium condition, the second time point and third time point respectively
The volume fraction of middle gas component；Interval between wherein described first time point and second time point is equal to described second
Interval between time point and the third time point；Gas in the gas chamber is by Oil-gas Separation film to oil-filled power equipment
Oil dissolved gas carries out isolated；
Processing module, for according to the corresponding volume fraction of the first time point, second time point corresponding volume point
Gas component in several, described third time point corresponding volume fraction and volume fraction predictor formula calculated equilibrium state lower chamber
Volume fraction.
7. a kind of prediction meanss of oil dissolved gas volume fraction, which is characterized in that including：The volume fraction predictor formula
For：
Wherein,Volume fraction for gas component in equilibrium state lower chamber；Ci(n-1)It is corresponding for the first time point
Volume fraction；CinFor second time point corresponding volume fraction；Ci(n+1)For the third time point corresponding volume point
Number.
8. the prediction meanss of oil dissolved gas volume fraction as claimed in claim 7, which is characterized in that the volume fraction
The calculating process of predictor formula is specially：
According to the volume fraction of gas component in gas chamber in the membrane separating process of oil dissolved gas：
Wherein, b is diffusion coefficient；T is the time after infiltration starts；CiDuring for t in gas chamber gas component volume fraction；
Obtain first time point t under nonequilibrium conditionn-1When gas chamber in gas component volume fraction and the second time point tnWhen gas
Relational expression in room between the volume fraction of gas component：
Wherein, Δ t=tn-tn-1；Ci(n-1)For tn-1When gas chamber in gas component volume fraction；CinFor tnWhen gas chamber in gas group
The volume fraction divided；
Intermediate computations formula is obtained according to the relational expression：
Wherein, Δ t=tn-tn-1=tn+1-tn；Ci(n+1)For third time point tn+1When gas chamber in gas component volume fraction；
Abbreviation is carried out to the intermediate computations formula, obtains the volume fraction predictor formula.
9. a kind of terminal device, including memory, processor and it is stored in the memory and can be on the processor
The computer program of operation, which is characterized in that the processor realizes such as claim 1 to 5 when performing the computer program
The step of any one the method.
10. a kind of computer readable storage medium, the computer-readable recording medium storage has computer program, and feature exists
In when the computer program is executed by processor the step of realization such as any one of claim 1 to 5 the method.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810106909.3A CN108229095A (en) | 2018-02-02 | 2018-02-02 | The Forecasting Methodology and terminal device of oil dissolved gas volume fraction |
| KR1020197036276A KR20200006559A (en) | 2018-02-02 | 2018-07-02 | Method and terminal device for volume fraction prediction of dissolved gas in oil |
| JP2019563746A JP2020521230A (en) | 2018-02-02 | 2018-07-02 | Prediction method of dissolved gas volume fraction in oil and terminal device |
| PCT/CN2018/093971 WO2019148766A1 (en) | 2018-02-02 | 2018-07-02 | Method for predicting volume fraction of dissolved gas in oil, and terminal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810106909.3A CN108229095A (en) | 2018-02-02 | 2018-02-02 | The Forecasting Methodology and terminal device of oil dissolved gas volume fraction |
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| CN201810106909.3A Pending CN108229095A (en) | 2018-02-02 | 2018-02-02 | The Forecasting Methodology and terminal device of oil dissolved gas volume fraction |
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| Country | Link |
|---|---|
| JP (1) | JP2020521230A (en) |
| KR (1) | KR20200006559A (en) |
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| WO (1) | WO2019148766A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2019148766A1 (en) * | 2018-02-02 | 2019-08-08 | 华北理工大学 | Method for predicting volume fraction of dissolved gas in oil, and terminal device |
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| FR2811430B1 (en) * | 2000-07-10 | 2002-09-06 | Inst Francais Du Petrole | MODELING METHOD FOR PREDICTING AS A FUNCTION OF TIME THE DETAILED COMPOSITION OF FLUIDS PROVIDED BY AN UNDERGROUND DEPOSIT DURING PRODUCTION |
| CN106645531B (en) * | 2016-12-21 | 2018-09-21 | 国网河北省电力公司电力科学研究院 | A kind of modification method of Gases Dissolved in Transformer Oil detection data |
| CN108229095A (en) * | 2018-02-02 | 2018-06-29 | 华北理工大学 | The Forecasting Methodology and terminal device of oil dissolved gas volume fraction |
-
2018
- 2018-02-02 CN CN201810106909.3A patent/CN108229095A/en active Pending
- 2018-07-02 KR KR1020197036276A patent/KR20200006559A/en not_active Application Discontinuation
- 2018-07-02 WO PCT/CN2018/093971 patent/WO2019148766A1/en active Application Filing
- 2018-07-02 JP JP2019563746A patent/JP2020521230A/en active Pending
Non-Patent Citations (1)
| Title |
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| 李洋流等: "基于膜分离的变压器在线监测***中气体体积分数的预测算法", 《电力自动化设备》 * |
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| WO2019148766A1 (en) * | 2018-02-02 | 2019-08-08 | 华北理工大学 | Method for predicting volume fraction of dissolved gas in oil, and terminal device |
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| KR20200006559A (en) | 2020-01-20 |
| JP2020521230A (en) | 2020-07-16 |
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