CN110220983A - Transformer state analysis method and terminal device based on oil chromatography - Google Patents
Transformer state analysis method and terminal device based on oil chromatography Download PDFInfo
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- CN110220983A CN110220983A CN201910517511.3A CN201910517511A CN110220983A CN 110220983 A CN110220983 A CN 110220983A CN 201910517511 A CN201910517511 A CN 201910517511A CN 110220983 A CN110220983 A CN 110220983A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
Abstract
The present invention provides a kind of transformer state analysis method and terminal device based on oil chromatography, comprising: the oil in transformer is sampled every prefixed time interval, and chromatography is carried out to sampled result, obtains the content information of default characteristic gas；According to the content information of the default characteristic gas, the default characteristic gas is calculated in the absolute gas production rate of preset time period；According to the content information of the default characteristic gas and/or the default characteristic gas at least one of the absolute gas production rate of preset time period, judge whether the transformer breaks down.The present invention carries out intellectual analysis to the state of transformer in real time by monitoring on-line to transformer oil chromatographic, improves the efficiency that accident analysis is carried out to transformer.
Description
Technical field
The invention belongs to technical field of electric power detection more particularly to a kind of transformer state analysis methods based on oil chromatography
And terminal device.
Background technique
Transformer is one of electrical equipment important in electric system, directly affects the safe operation water of system
It is flat, once accident occurs, it will cause huge direct losses and indirect loss.Large-scale power transformer is generally oil immersed type transformation
Device is usually made of components such as iron core, first winding, secondary winding, fuel tank, high-low pressure insulating sleeves, complicated composed structure
Affect the reliability of transformer station high-voltage side bus.Transformer fault can be divided into internal fault and external fault two by transformer body division
Kind, the failure occurred in oil tank of transformer is referred to as internal fault, and power transformer interior fault damages long-range caused by transformer
It is the key points and difficulties in transformer fault diagnosis and analysis in external fault.
Oil chromatogram analysis is one of the effective ways for diagnosing power transformer interior fault, mainly according to solution gas in transformer oil
Bulk concentration content and gas concentration changing value, reflect the internal fault of transformer.Traditional side to Chromatographic Analysis of Transformer oil
Method is all the oil in artificial acquisition transformer, is then divided using the method that chemical reagent analysis is added the gas in oil
From manually the cumbersome work such as calculating and summarize and just can determine that whether transformer breaks down using analysis.However, this
Largely work dependence is accomplished manually method, and analytical cycle is long, analysis efficiency is low, leads to the event that cannot find transformer in time
Barrier.
Summary of the invention
In view of this, the transformer state analysis method that the embodiment of the invention provides a kind of based on oil chromatography, computer
Readable storage medium storing program for executing and terminal device, to solve to carry out accident analysis low efficiency to transformer by oil chromatography in the prior art
Problem.
The first aspect of the embodiment of the present invention provides a kind of transformer state analysis method based on oil chromatography, comprising:
The oil in transformer is sampled every prefixed time interval, and chromatography is carried out to sampled result, is obtained
The content information of default characteristic gas；
According to the content information of the default characteristic gas, the default characteristic gas is calculated in the absolute of preset time period
Gas production rate；
According to the content information of the default characteristic gas and/or the default characteristic gas in the absolute of preset time period
At least one of gas production rate, judges whether the transformer breaks down.
The second aspect of the embodiment of the present invention provides a kind of computer readable storage medium, the computer-readable storage
Media storage has computer-readable instruction, and the computer-readable instruction realizes following steps when being executed by processor:
The oil in transformer is sampled every prefixed time interval, and chromatography is carried out to sampled result, is obtained
The content information of default characteristic gas；
According to the content information of the default characteristic gas, the default characteristic gas is calculated in the absolute of preset time period
Gas production rate；
According to the content information of the default characteristic gas and/or the default characteristic gas in the absolute of preset time period
At least one of gas production rate, judges whether the transformer breaks down.
The third aspect of the embodiment of the present invention provides a kind of terminal device, including memory, processor and is stored in
In the memory and the computer-readable instruction that can run on the processor, the processor executes the computer can
Following steps are realized when reading instruction:
The oil in transformer is sampled every prefixed time interval, and chromatography is carried out to sampled result, is obtained
The content information of default characteristic gas；
According to the content information of the default characteristic gas, the default characteristic gas is calculated in the absolute of preset time period
Gas production rate；
According to the content information of the default characteristic gas and/or the default characteristic gas in the absolute of preset time period
At least one of gas production rate, judges whether the transformer breaks down.
The present invention provides a kind of transformer state analysis method and terminal device based on oil chromatography, comprising: every pre-
If time interval samples the oil in transformer, and carries out chromatography to sampled result, default characteristic gas is obtained
Content information；According to the content information of the default characteristic gas, the default characteristic gas is calculated in the exhausted of preset time period
To gas production rate；According to the content information of the default characteristic gas and/or the default characteristic gas in preset time period
At least one of absolute gas production rate, judges whether the transformer breaks down.The present invention passes through to transformer oil chromatographic
It is monitored on-line, intellectual analysis is carried out to the state of transformer in real time, improve the efficiency for carrying out accident analysis to transformer.
Detailed description of the invention
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 is only of the invention some
Embodiment for those of ordinary skill in the art without any creative labor, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is a kind of process signal of transformer state analysis method based on oil chromatography provided in an embodiment of the present invention
Figure；
Fig. 2 is a kind of structural block diagram of the transformer state analytical equipment based on oil chromatography provided in an embodiment of the present invention；
Fig. 3 is a kind of signal of the transformer state analysing terminal equipment based on oil chromatography provided in an embodiment of the present invention
Figure.
Specific embodiment
In being described below, for illustration and not for limitation, the tool of such as particular system structure, technology etc is proposed
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 specific
The present invention also may be implemented in the other embodiments of details.In other situations, it omits to well-known system, device, electricity
The detailed description of road and method, in case unnecessary details interferes description of the invention.
In order to illustrate technical solutions according to the invention, the following is a description of specific embodiments.
The transformer state analysis method based on oil chromatography that the embodiment of the invention provides a kind of.In conjunction with Fig. 1, this method packet
It includes:
S101 samples the oil in transformer every prefixed time interval, and carries out chromatography to sampled result,
Obtain the content information of default characteristic gas.
Under normal circumstances, the insulating materials of power transformer uses cardboard and oilpaper, once the fuel tank of transformer goes out
Phenomena such as existing discharge property, insulation ag(e)ing, thermal fault, then will occur it is certain represent gas, and relatively a part of gas can have
In oil, therefore, when whether analysis transformer breaks down, it can be carried out by representative gas present in transformer oil
Research.
Gas in transformer oil can be divided into two kinds according to Crack cause, and one kind is nominal gas, and one kind is bad shape
State gas.In use, megohmite insulant can have a process gradually to wear, the gas quilt that this process occurs to equipment
Referred to as nominal gas；For defective mode gas, refer to when defective mode occurs in equipment, work of the megohmite insulant due to heat and electricity
It mainly include H with the gas of appearance2、CH4、C2H2、C2H4、C2H6Deng.
In embodiments of the present invention, the default characteristic gas includes but is not limited to H2、CH4、C2H2、C2H4、C2H6Deng.
In embodiments of the present invention, by way of sampling, suitable oil body is taken out from transformer, in this process
In, it mainly takes test tube or syringe to sample transformer oil, after the completion of sampling, sample is contained in time clear
So that analysis uses in clean container, later, by the transformation laid in container by being placed in degassing equipment, transformation is realized
Then the gas-liquid separation of device oil is detected to by separating collected gas using the gas chromatograph of profession, is obtained pre-
If the content information of characteristic gas.
S102 calculates the default characteristic gas in preset time period according to the content information of the default characteristic gas
Absolute gas production rate.
Optionally, default characteristic gas is calculated in the absolute gas production rate of preset time period by following expression:
In formula, r is used to indicate the absolute gas production rate of default characteristic gas,At the end of indicating preset time period
The volume fraction of default characteristic gas,The volume fraction of characteristic gas, Δ t are preset when for indicating that preset time period starts
For indicating actual run time corresponding to preset time period, G is for indicating the total oil mass of reality corresponding to sampled result, ρ
For indicating oil density.
S103, according to the content information of the default characteristic gas and/or the default characteristic gas in preset time period
At least one of absolute gas production rate, judge whether the transformer breaks down.
Optionally, the embodiment of the present invention provides four kinds of feasible judgment methods, for judging whether transformer breaks down,
Wherein, first method is being preset to the third method by the content information and the default characteristic gas for presetting characteristic gas
The absolute gas production rate of period is judged that fourth method is only judged by presetting the content information of characteristic gas.
First method: default characteristic gas is the content summation of methane, ethane, ethylene and acetylene, if the default spy
The content for levying gas is more than or equal to preset demand value, and less than three times of the demand value, and the default characteristic gas is pre-
If the absolute gas production rate of period is less than scheduled rate, then judging the inside transformer, there are failures, when first is default
It is interior that trouble hunting is carried out to the transformer.
Optionally, the content summation of methane, ethane, ethylene and acetylene is known as total hydrocarbon, by total hydrocarbon content and absolutely produces gas
Judgment method of the rate as transformer fault.
At this point, inside transformer breaks down, but preset since total hydrocarbon is less than in the absolute gas production rate of preset time period
Rate illustrates that failure spreading trend is more slow, can take the method for continuing to run continuous observation, right in the first preset time
Transformer carries out trouble hunting.
Second method presets the content summation that characteristic gas is methane, ethane, ethylene and acetylene, if the default spy
The content for levying gas is more than or equal to preset demand value, and is less than three times of the demand value, and the default characteristic gas exists
The absolute gas production rate of preset time period is more than or equal to twice that scheduled rate is less than the scheduled rate, then judges the transformation
There are failures inside device, carry out trouble hunting to the transformer in the second preset time, wherein second preset time
Less than first preset time.
Judge that inside transformer breaks down at this time, and due to total hydrocarbon preset time period absolute gas production rate be greater than etc.
It is less than twice of the scheduled rate in scheduled rate, illustrates that failure spreading trend is very fast, then to change in the second preset time
Depressor carries out trouble hunting, and the second preset time should be less than the first preset time.
The third method presets the content summation that characteristic gas is methane, ethane, ethylene and acetylene, if the default spy
The content for levying gas is more than or equal to three times of preset demand value, and the default characteristic gas is in the absolute production of preset time period
Gas velocity rate is more than or equal to three times of scheduled rate, then judging the inside transformer, there are failures, to institute in third preset time
It states transformer and carries out trouble hunting, wherein the third preset time is less than second preset time.
Judge that inside transformer breaks down at this time, and due to total hydrocarbon preset time period absolute gas production rate be greater than etc.
In three times of scheduled rate, illustrates that failure is serious and quickly grows, need immediately to overhaul transformer.
Fourth method: default characteristic gas includes hydrogen, methane, ethane, ethylene and acetylene, for same voltage class
Transformer, obtain the characteristic gas sampled data of the transformer of preset quantity under the voltage class；According to the preset quantity
Transformer characteristic gas sampled data, obtain the probability distribution of the volume fraction of every kind of gas in the characteristic gas；Needle
To any gas, the first threshold value of warning and the second threshold value of warning of the gas are determined by Weibull Function；According to
Every kind of gas in the content of every kind of gas and the default characteristic gas of the transformer in the default characteristic gas of the transformer
First threshold value of warning and the second threshold value of warning corresponding to body, judge whether the transformer breaks down.
It should be noted that by magnanimity sampled data Fitting Analysis it is found that the transformer of same voltage class, such as
The probability distribution of the transformer of 220kV, a kind of volume fraction of characteristic gas of transformer meets Weibull distribution, optionally,
By the probability distribution of the volume fraction of the gas, Weibull distribution parameters corresponding to the gas, including scale are determined
Parameter lambda and form parameter k；According to Weibull distribution parameters corresponding to the gas and the calculating of preset first probability value
Corresponding first threshold value of warning described in gas, according to Weibull distribution parameters corresponding to the gas and preset second probability
Value, calculates the second threshold value of warning corresponding to the gas, wherein first probability value is greater than second probability value, institute
The first threshold value of warning is stated greater than second threshold value of warning.
Optionally, 95% is set by the first probability value, sets 90% for the second probability value, by the first probability value and ruler
Degree parameter lambda and form parameter k bring Weibull distribution formula into and obtain the first threshold value of warning, by the second probability value and scale parameter λ
Weibull distribution formula is brought into form parameter k obtains the second threshold value of warning.
At this point, being determined according to characteristic gas component method has the multiple groups gas of correlation, wherein it is directed to any group of gas,
This group of gas includes at least two gases in the default characteristic gas, wherein any two groups of gas institute in the multiple groups gas
The gas componant for including is not exactly the same；Any group of gas if it exists, the content of the first gas in this group of gas are more than described
First threshold value of warning corresponding to first gas, and the content of the second gas in this group of gas is more than that the second gas institute is right
The second threshold value of warning answered then judges that the transformer breaks down.
Optionally, it is analyzed according to characteristic gas component method, methane and ethane, acetylene correlation with higher, then
These three gases can be divided into one group.
Further, after judging that transformer breaks down, this method further include:
According to the content information of the default characteristic gas, the type that the transformer breaks down is judged.
Optionally, can be become by one of characteristic gas component method, three-ratio method or fever electric discharge figure method method
The judgement of depressor fault type can also carry out the judgement of fault type, the embodiment of the present invention pair by the combination of a variety of methods
This is without limitation.
The transformer state analysis method based on oil chromatography that the present invention provides a kind of, comprising: every prefixed time interval
Oil in transformer is sampled, and chromatography is carried out to sampled result, obtains the content information of default characteristic gas；Root
According to the content information of the default characteristic gas, the default characteristic gas is calculated in the absolute gas production rate of preset time period；
According to the content information of the default characteristic gas and/or the default characteristic gas preset time period absolute gas production rate
At least one of, judge whether the transformer breaks down.The present invention by being monitored on-line to transformer oil chromatographic,
Intellectual analysis is carried out to the state of transformer in real time, improves the efficiency for carrying out accident analysis to transformer.
Fig. 2 is a kind of transformer state analytical equipment schematic diagram based on oil chromatography provided in an embodiment of the present invention, in conjunction with
Fig. 2, the device include: default characteristic gas content acquiring unit 21, preset the absolute gas production rate acquiring unit 22 of characteristic gas
With transformer fault judging unit 23；
Default characteristic gas content acquiring unit 21, for being adopted every prefixed time interval to the oil in transformer
Sample, and chromatography is carried out to sampled result, obtain the content information of default characteristic gas；
The default absolute gas production rate acquiring unit 22 of characteristic gas, for being believed according to the content of the default characteristic gas
Breath calculates the default characteristic gas in the absolute gas production rate of preset time period；
Transformer fault judging unit 23, for according to the content information of the default characteristic gas and/or described default
Characteristic gas judges whether the transformer breaks down at least one of the absolute gas production rate of preset time period.
Optionally, the default characteristic gas is the content summation of methane, ethane, ethylene and acetylene, and transformer fault is sentenced
Disconnected unit 23 is used for:
If the content of the default characteristic gas is more than or equal to preset demand value, less than three times of the demand value, and
The default characteristic gas is less than scheduled rate in the absolute gas production rate of preset time period, then judges that the inside transformer is deposited
In failure, trouble hunting is carried out to the transformer in the first preset time.
Optionally, the default characteristic gas is the content summation of methane, ethane, ethylene and acetylene, and transformer fault is sentenced
Disconnected unit 23 is used for:
If the content of the default characteristic gas is more than or equal to preset demand value, and is less than three times of the demand value,
And the default characteristic gas is more than or equal to scheduled rate in the absolute gas production rate of preset time period and is less than the scheduled rate
Twice, then judging the inside transformer, there are failures, in the second preset time to the transformer carry out trouble hunting,
Wherein, second preset time is less than first preset time.
Optionally, the default characteristic gas is the content summation of methane, ethane, ethylene and acetylene, and transformer fault is sentenced
Disconnected unit 23 is used for:
If the content of the default characteristic gas is more than or equal to three times of preset demand value, and the default characteristic gas
Be more than or equal to three times of scheduled rate in the absolute gas production rate of preset time period, then judge the inside transformer there are failure,
Trouble hunting is carried out to the transformer in third preset time, wherein it is pre- that the third preset time is less than described second
If the time.
Optionally, the default characteristic gas includes hydrogen, methane, ethane, ethylene and acetylene, and transformer fault judgement is single
Member 23 is used for:
For the transformer of same voltage class, the characteristic gas for obtaining the transformer of preset quantity under the voltage class is adopted
Sample data；
According to the characteristic gas sampled data of the transformer of the preset quantity, every kind of gas in the characteristic gas is obtained
Volume fraction probability distribution；
For any gas, the first threshold value of warning and the second early warning of the gas are determined by Weibull Function
Threshold value；
According to the content of every kind of gas in the default characteristic gas of the transformer and the default feature of the transformer
The first threshold value of warning and the second threshold value of warning corresponding to every kind of gas, judge whether the transformer breaks down in gas.
Optionally, transformer fault judging unit 23 is used for:
By the probability distribution of the volume fraction of the gas, Weibull distribution parameters corresponding to the gas are determined；
It is calculated described in the gas according to Weibull distribution parameters corresponding to the gas and preset first probability value
Corresponding first threshold value of warning is calculated according to Weibull distribution parameters corresponding to the gas and preset second probability value
Second threshold value of warning corresponding to the gas, wherein first probability value is greater than second probability value, and described first is pre-
Alert threshold value is greater than second threshold value of warning.
Optionally, transformer fault judging unit 23 is used for:
The multiple groups gas with correlation is determined according to characteristic gas component method, wherein be directed to any group of gas, this group of gas
Body includes at least two gases in the default characteristic gas, wherein any two groups of gas is included in the multiple groups gas
Gas componant is not exactly the same；
Any group of gas if it exists, the content of the first gas in this group of gas are more than the corresponding to the first gas
One threshold value of warning, and the content of the second gas in this group of gas is more than the second threshold value of warning corresponding to the second gas,
Then judge that the transformer breaks down.
Optionally, which further includes transformer fault type judging unit 24, is used for:
According to the content information of the default characteristic gas, the type that the transformer breaks down is judged.
The present invention provides a kind of transformer state analytical equipment based on oil chromatography, the device is every prefixed time interval
Oil in transformer is sampled, and chromatography is carried out to sampled result, obtains the content information of default characteristic gas；Root
According to the content information of the default characteristic gas, the default characteristic gas is calculated in the absolute gas production rate of preset time period；
According to the content information of the default characteristic gas and/or the default characteristic gas preset time period absolute gas production rate
At least one of, judge whether the transformer breaks down.The present invention by being monitored on-line to transformer oil chromatographic,
Intellectual analysis is carried out to the state of transformer in real time, improves the efficiency for carrying out accident analysis to transformer.
Fig. 3 is a kind of schematic diagram of terminal device provided in an embodiment of the present invention.As shown in figure 3, the terminal of the embodiment
Equipment 3 includes: processor 30, memory 31 and is stored in the memory 31 and can run on the processor 30
Computer program 32, such as the transformer state based on oil chromatography analyze program.The processor 30 executes the computer journey
The step in above-mentioned each transformer state analysis method embodiment based on oil chromatography is realized when sequence 32, such as shown in FIG. 1
Step 101 is to 103, alternatively, the processor 30 is realized in above-mentioned each Installation practice respectively when executing the computer program 32
Module/unit function, such as the function of module 21 to 24 shown in Fig. 2.
Illustratively, the computer program 32 can be divided into one or more module/units, it is one or
Multiple module/units are stored in the memory 31, and are executed by the processor 30, 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 32 in the terminal device 3 is described.
The terminal device 3 can be the calculating such as desktop PC, notebook, palm PC and cloud server and set
It is standby.The terminal device may include, but be not limited only to, processor 30, memory 31.It will be understood by those skilled in the art that Fig. 3
The only example of terminal device 3 does not constitute the restriction to terminal device 3, may include than illustrating more or fewer portions
Part perhaps combines certain components or different components, such as the terminal device can also include input-output equipment, net
Network access device, bus etc..
The processor 30 can be central processing unit (Central Processing Unit, CPU), can also be
Other general processors, digital signal processor (Digital Signal Processor, DSP), specific integrated circuit
(Application Specific Integrated Circuit, ASIC), field 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 is also possible to any conventional processor
Deng.
The memory 31 can be the internal storage unit of the terminal device 3, such as the hard disk or interior of terminal device 3
It deposits.The memory 31 is also possible to the External memory equipment of the terminal device 3, such as be equipped on the terminal device 3
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 31 can also both include the storage inside list of the terminal device 3
Member also includes External memory equipment.The memory 31 is for storing needed for the computer program and the terminal device
Other programs and data.The memory 31 can be also used for temporarily storing the data that has exported or will export.
The embodiment of the present invention also provides a kind of computer readable storage medium, and the computer-readable recording medium storage has
Computer program, the computer program realize the transformation described in any of the above-described embodiment based on oil chromatography when being executed by processor
The step of device state analysis method.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list
Member both can take the form of hardware realization, can also realize in the form of software functional units.
If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product
When, it can store in a computer readable storage medium.Based on this understanding, technical solution of the present invention is substantially
The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words
It embodies, which is stored in a storage medium, including some instructions are used so that a computer
Equipment (can be personal computer, server or the network equipment etc.) executes the complete of each embodiment the method for the present invention
Portion or part steps.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only
Memory), random access memory (RAM, Random Access Memory), magnetic or disk etc. are various can store journey
The medium of sequence code.
Embodiment described above is merely illustrative of the technical solution of the present invention, rather than its limitations；Although referring to aforementioned reality
Applying example, invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each
Technical solution documented by embodiment is modified or equivalent replacement of some of the technical features；And these are modified
Or replacement, the essence of corresponding technical solution is departed from the spirit and scope of the technical scheme of various embodiments of the present invention, it should all
It is included within protection scope of the present invention.
Claims (10)
1. a kind of transformer state analysis method based on oil chromatography, which is characterized in that this method comprises:
The oil in transformer is sampled every prefixed time interval, and chromatography is carried out to sampled result, is preset
The content information of characteristic gas；
According to the content information of the default characteristic gas, the default characteristic gas is calculated in the absolute production gas of preset time period
Rate；
According to the content information of the default characteristic gas and/or the default characteristic gas preset time period absolute production gas
At least one of rate, judges whether the transformer breaks down.
2. the transformer state analysis method according to claim 1 based on oil chromatography, which is characterized in that the default spy
Sign gas be methane, ethane, ethylene and acetylene content summation, the content information according to the default characteristic gas and/
Or the default characteristic gas judges whether the transformer is sent out at least one of the absolute gas production rate of preset time period
Giving birth to failure includes:
If the content of the default characteristic gas is more than or equal to preset demand value, less than three times of the demand value, and it is described
Default characteristic gas is less than scheduled rate in the absolute gas production rate of preset time period, then judges that the inside transformer has event
Barrier carries out trouble hunting to the transformer in the first preset time.
3. the transformer state analysis method according to claim 1 based on oil chromatography, which is characterized in that the default spy
Sign gas be methane, ethane, ethylene and acetylene content summation, the content information according to the default characteristic gas and/
Or the default characteristic gas judges whether the transformer is sent out at least one of the absolute gas production rate of preset time period
Giving birth to failure includes:
If the content of the default characteristic gas is more than or equal to preset demand value, and is less than three times of the demand value, and institute
It states default characteristic gas and is more than or equal to two that scheduled rate is less than the scheduled rate in the absolute gas production rate of preset time period
Times, then judging the inside transformer, there are failures, trouble hunting is carried out to the transformer in the second preset time,
In, second preset time is less than first preset time.
4. the transformer state analysis method according to claim 1 based on oil chromatography, which is characterized in that the default spy
Sign gas be methane, ethane, ethylene and acetylene content summation, the content information according to the default characteristic gas and/
Or the default characteristic gas judges whether the transformer is sent out at least one of the absolute gas production rate of preset time period
Giving birth to failure includes:
If the content of the default characteristic gas is more than or equal to three times of preset demand value, and the default characteristic gas is pre-
If the absolute gas production rate of period is more than or equal to three times of scheduled rate, then the inside transformer is judged there are failure, the
Trouble hunting is carried out to the transformer in three preset times, wherein when the third preset time is default less than described second
Between.
5. the transformer state analysis method according to claim 1 based on oil chromatography, which is characterized in that the default spy
Levying gas includes hydrogen, methane, ethane, ethylene and acetylene, the content information and/or institute according to the default characteristic gas
Default characteristic gas is stated at least one of the absolute gas production rate of preset time period, judges whether the transformer occurs event
Barrier includes:
For the transformer of same voltage class, the characteristic gas hits of the transformer of preset quantity under the voltage class is obtained
According to；
According to the characteristic gas sampled data of the transformer of the preset quantity, the body of every kind of gas in the characteristic gas is obtained
The probability distribution of fraction；
For any gas, the first threshold value of warning and the second early warning threshold of the gas are determined by Weibull Function
Value；
According to the content of every kind of gas in the default characteristic gas of the transformer and the default characteristic gas of the transformer
In the first threshold value of warning and the second threshold value of warning corresponding to every kind of gas, judge whether the transformer breaks down.
6. the transformer state analysis method according to claim 5 based on oil chromatography, which is characterized in that described be directed to is appointed
A kind of gas determines the first threshold value of warning of the gas by Weibull Function and the second threshold value of warning includes:
By the probability distribution of the volume fraction of the gas, Weibull distribution parameters corresponding to the gas are determined；
It is calculated according to Weibull distribution parameters corresponding to the gas and preset first probability value corresponding described in the gas
The first threshold value of warning, according to Weibull distribution parameters corresponding to the gas and preset second probability value, described in calculating
Second threshold value of warning corresponding to gas, wherein first probability value is greater than second probability value, the first early warning threshold
Value is greater than second threshold value of warning.
7. the transformer state analysis method according to claim 6 based on oil chromatography, which is characterized in that described according to institute
State in the default characteristic gas of transformer every kind of gas in the content of every kind of gas and the default characteristic gas of the transformer
Corresponding the first threshold value of warning and the second threshold value of warning, judging whether the transformer breaks down includes:
The multiple groups gas with correlation is determined according to characteristic gas component method, wherein be directed to any group of gas, this group of gas packet
Containing at least two gases in the default characteristic gas, wherein the gas that any two groups of gas is included in the multiple groups gas
Ingredient is not exactly the same；
Any group of gas if it exists, the content of the first gas in this group of gas are more than first pre- corresponding to the first gas
Alert threshold value, and the content of the second gas in this group of gas is more than the second threshold value of warning corresponding to the second gas, then sentences
The transformer that breaks breaks down.
8. the transformer state analysis method according to claim 1-7 based on oil chromatography, which is characterized in that if
Judge that the transformer breaks down, this method further include:
According to the content information of the default characteristic gas, the type that the transformer breaks down is judged.
9. 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 any one of such as claim 1 to 8 of realization the method.
10. a kind of terminal device, which is characterized in that the terminal device includes memory, processor, is stored on the memory
There is the computer program that can be run on the processor, is realized when the processor executes the computer program as right is wanted
The step of seeking any one of 1 to 8 the method.
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