CN110008649A - A kind of group's transformer health Evaluation methods, devices and systems - Google Patents
A kind of group's transformer health Evaluation methods, devices and systems Download PDFInfo
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Abstract
The invention relates to a kind of group's transformer health Evaluation methods, devices and systems, to provide applicability stronger group's transformer health Evaluation means.The appraisal procedure, comprising: obtain the economic parameters and technical parameter of group's transformer；The economic parameters and the technical parameter are pre-processed；Based on pretreated as a result, generating economic evaluation parameter and technology evaluation parameter respectively；Based on the economic evaluation parameter and the technology evaluation parameter, net assessment parameter is generated；Based on the net assessment parameter and multiple preset ranges, the health status of group's transformer is assessed.
Description
Technical field
The invention relates to group's transformer health Evaluation fields, and in particular to a kind of group's transformer health
Situation common evaluation methodology, device and system.
Background technique
With the sustainable growth of electricity needs and the rapid development of power grid construction, the electric power such as China's thermoelectricity, water power and wind-powered electricity generation
Equipment and monitor equipment status are that all kinds of monitoring devices of major function or amount of software holding are skyrocketed through.
The safety of group's transformer health status operation, is related to the safety of production, life, it is therefore desirable to become to group
Depressor health status is assessed.In the prior art, based on having been done greatly to the health status of transformer and life appraisal both at home and abroad
Quantifier elimination, it is intended to find the state evaluating method closest to transformer actual operating state, and influence transformer life
Being associated between key forecast amount and maintenance cost.
It on the one hand, is nearly all at this stage to be divided into transformer according to transformer device structure to the evaluation of transformer station high-voltage side bus situation
Different subsystems is determined according to status data (including account information, inspection information, off-line testing and online monitoring data etc.)
The operating status of each subsystem carries out life prediction in turn；Also have according to transformer most common failure type, establish insulating unit and comment
Estimate system, the Years Of Service of transformer is determined according to the content of predetermined substance；Or O&M cost control is carried out based on life Cycle Theory
System.It evaluates angle and the different of focus determines to use different applicable assessment models, but current model all establishes one's own system.
Secondly, dividing assessment unit anyway, the country is commonly based on state to the status assessment system of transformer at present
" the power transmission and transformation equipment state overhauling testing regulations " of family's grid company, is assessed using the single step linear condition based on weighted factor
Method, the advantages of this method is strong operability, judges simple and quick, but there are numerous inevitable distortion disadvantages in evaluation process
End: (1) subjective factor excessively participates in assessment result；(2) point value of evaluation is discrete discontinuous, and data filtering eyed structure is too loose
It dissipates, scoring results susceptibility wretched insufficiency；(3) component and test data are mixed into assessment, may cause the mixing of different risks；
(4) unrelated 19940913 state amount of shape is compared by force.
Although most methods are comprehensive by using multiple-object information in addition, diversification is presented in transformer appraisal procedure
The target that decision is carried out to component of interest or risk is realized in conjunction processing.
Obviously, group's transformer health Evaluation method of the prior art, can not more fully be applicable in various assessment mesh
, versatility is poor.
Summary of the invention
Of the existing technology in order to solve the problems, such as, at least one embodiment of the application provides a kind of group's transformer
Health Evaluation methods, devices and systems.
In a first aspect, the application provides a kind of group's transformer health Evaluation method, comprising:
Obtain the economic parameters and technical parameter of group's transformer；
The economic parameters and the technical parameter are pre-processed；
Based on pretreated as a result, generating economic evaluation parameter and technology evaluation parameter respectively；
Based on the economic evaluation parameter and the technology evaluation parameter, net assessment parameter is generated；
Based on the net assessment parameter and multiple preset ranges, the health status of group's transformer is assessed.
In possible implementation, the economic parameters include acquisition cost, maintenance cost, the profit of acquisition, transport at
The cost of unit time when sheet, installation cost and equipment fault；
The technical parameter includes oil chromatography code test data, load, power factor, upper layer oil temperature, partial discharge amount and Jie
Damage amount.
It is described that the economic parameters and the technical parameter are pre-processed in possible implementation, including establish
Data call path, data normalization supplement required quantity of state and character subset preliminary screening.
It is described to be based on pretreated as a result, generating economic evaluation parameter and technology evaluation respectively in possible implementation
Parameter, comprising:
It to the pretreated economic parameters and the technical parameter, is given a mark and/or is weighted, generate the economy
Assess parameter and the technology evaluation parameter.
Second aspect, the application provide a kind of group's transformer health Evaluation device, comprising:
Module is obtained, for obtaining the economic parameters and technical parameter of group's transformer；
Preprocessing module, for being pre-processed to the economic parameters and the technical parameter；
Processing module, for being based on pretreated as a result, generating economic evaluation parameter and technology evaluation parameter respectively；With
And it is based on the economic evaluation parameter and the technology evaluation parameter, generate net assessment parameter；
Evaluation module assesses the health of group's transformer for being based on the net assessment parameter and multiple preset ranges
Situation.
In possible implementation, the economic parameters include acquisition cost, maintenance cost, the profit of acquisition, transport at
The cost of unit time when sheet, installation cost and equipment fault；
The technical parameter includes oil chromatography code test data, load, power factor, upper layer oil temperature, partial discharge amount and Jie
Damage amount.
In possible implementation, the preprocessing module is specifically used for:
It establishes data call path, data normalization, supplement required quantity of state and character subset preliminary screening.
In possible implementation, the processing module is specifically used for:
It to the pretreated economic parameters and the technical parameter, is given a mark and/or is weighted, generate the economy
Assess parameter and the technology evaluation parameter.
The third aspect, the application provides a kind of group's transformer health Evaluation system, including assesses as described above
Device.
It further include communication device, data input device and online sensing device, the assessment dress in possible implementation
It sets and is communicated by the communication device with the data input device and the online sensing device foundation；
The data input device is configured to receive the economic evaluation parameter and technology evaluation parameter of input；
The online sensing device is configured to the status data of monitoring group's transformer, and the status data includes technology
Assess parameter.
In the embodiment of the present application, by the technology and economic factor to group's transformer, comprehensively assessed, to mention
The applicability of high evaluation measures, and improve assessment accuracy.
Detailed description of the invention
Technical solution in ord to more clearly illustrate embodiments of the present application, below will be in embodiment or description of the prior art
Required attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the application
Example is applied, it for those of ordinary skill in the art, without any creative labor, can also be attached according to these
Figure obtains other attached drawings.
Fig. 1 is a kind of flow chart of group's transformer health Evaluation method provided by the embodiments of the present application；
Fig. 2 is the diagram provided by the embodiments of the present application given a mark with technical parameter and economic parameters；
Fig. 3 is a kind of schematic diagram of group's transformer health Evaluation device provided by the embodiments of the present application；
Fig. 4 is a kind of block schematic illustration of group's transformer health Evaluation device provided by the embodiments of the present application；
Fig. 5 is a kind of schematic diagram of group's transformer health Evaluation system provided by the embodiments of the present application.
Specific embodiment
To keep the purposes, technical schemes and advantages of the embodiment of the present application clearer, below in conjunction with the embodiment of the present application
In attached drawing, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the application, instead of all the embodiments.Based on the embodiment in the application, ordinary skill people
Member's every other embodiment obtained without making creative work, shall fall in the protection scope of this application.
It should be noted that, in this document, the relational terms of such as " first " and " second " or the like are used merely to one
A entity or operation with another entity or operate distinguish, without necessarily requiring or implying these entities or operation it
Between there are any actual relationship or orders.
In a first aspect, as shown in Figure 1, the application provides a kind of group's transformer health Evaluation method, comprising:
101, obtain the economic parameters and technical parameter of group's transformer；
102, economic parameters and technical parameter are pre-processed；
103, based on pretreated as a result, generating economic evaluation parameter and technology evaluation parameter respectively；
104, it is based on economic evaluation parameter and technology evaluation parameter, generates net assessment parameter；
105, it is based on net assessment parameter and multiple preset ranges, assesses the health status of group's transformer.
In possible implementation, economic parameters includes acquisition cost, maintenance cost, the profit of acquisition, transportation cost, peace
Dress up the cost of unit time when this and equipment fault；
Technical parameter includes oil chromatography code test data, load, power factor, upper layer oil temperature, partial discharge amount and dielectric loss amount.
It should be noted that in the embodiment of the present application, content included by economic parameters and technical parameter merely into
Row explanation, be not limited to transformer other on the influential other content of assessment result tool.For example, it is also possible to include enlistment age or military service
The problem or result in time, the nameplate data (such as kV and MVA) of transformer, practical application and load state, operation,
Newest field test data (analysis of such as dissolved gas and oils) and spare transformer and spares provisioning situation etc..
In possible implementation, economic parameters and technical parameter are pre-processed, including establish data call path,
Data normalization supplements required quantity of state and character subset preliminary screening.
Based on inevitably will appear missing values, repetition values etc. in data acquisition, and due to sensor producer
It is different, be manually entered human factor etc. and cause Parameter units or to obtain range different, need the economic parameters and technology to acquisition
Parameter carries out above-mentioned pretreatment, which can be the combination using one or several.Consider with the change that obtains and participate in evaluation and electing
For the purpose of transformer design, service ability, component etc. can determine the objective evaluation parameter of evaluation of properties, in addition to above-mentioned mode,
Other pretreated modes can also be used, the application is not limited thereto.
In possible implementation, it is based on pretreated as a result, generating economic evaluation parameter and technology evaluation parameter respectively,
Include:
It to pretreated economic parameters and technical parameter, is given a mark and/or is weighted, generate economic evaluation parameter and skill
Art assesses parameter.
The marking and/or weighting, can be superposition, can also be multiplied, based on the purpose of different parameters, Ke Yixuan
With different modes.
In some examples, with " t1a...tli”、“t2a...t2i”...“tna...rni" represent different changes in group's transformer
The technical parameter of depressor, can be according to pretreated at least one rule Fn, handle and obtain result Tn, such as formula (1):
Tn=Fn(tna, tnb... tai) (1)
Based on the result T behind the pre- place of technical parametern, technology evaluation parameter TI can be obtained based on such as under typex, it is as follows:
TIX=k (∑ (wn*STn) (2)
TIx=H (ST1,ST2,...,STn,w1,w2,...wn) (4)
Wherein, k, n and H are constant；Formula (4) w is weighted factor.
Certainly, assessment technology parameter TIxMode be not limited to it is above several, for economic evaluation parameter EIxDetermination have
Similar mode, details are not described herein.
In some examples, net assessment parameter ENS is determinedx, it can be in the following way:
ENSX=k (wt*TIx+we*EIx) (7)
Wherein, weAnd wtFor weighted factor.
In above formula, if the case where corresponding two above-mentioned weighted factor we and wt are assigned a value of 1 in formula (6), i.e. wt=we
=1, which is the Euclidean distance in two-dimensional space, and several neighborhood points of predicted state point can be divided using the result, and
Prediction of the Local prediction model realization to transformer future state linearly or nonlinearly is established by neighborhood point.
Formula (7) is by economic evaluation parameter EIxIt merges, including is used for the weighted sum of technology evaluation parameter TIx
The factor k of scaling is also used as determining total evaluation parameter ENSxFacultative linkage rule.
Concatenate rule, weighted factor w in formula (8) are substituted as another kindeAnd wtThe index of relevant parameter is each served as,
Scaling total evaluation parameter ENS can also equally be playedxEffect.
In more specific group's transformer process assessment, it may be considered that probability of malfunction and transformer are important in power grid
Degree.For example, damage risk when failure can be considered in probability of malfunction, winding overheat, insulation breakdown, attachment failure, random fault and
Metal superheat etc..
In some embodiments, damage risk may consider following situation when failure:
Thin insulating, referring to has more with the transformer lower than normal basic insulation level due to shorter insulation path
High breakdown risk.
Reclosing may cause the unbalanced fault electric current under malfunction due to reclosing, higher in winding temperature
In the case of, reclosing will cause winding mechanical strength can not load serious conditions, while multi-time automatic reclosing lock will lead to guarantor
Shield actuation time is too long, therefore reclosing is considered as the important factor for increasing damage risk.
Capacity parameter actual value, the square root of the capacity parameter actual value amount of trying to please, its purpose is to mean failure rate is endangered
Danger is associated with the size of transformer and power.
Significant trouble incidence refers to the significant trouble number that transformer is undergone every year, if it is available without data, or
Every year by the number of stoppages less than 2.5, then it is 2.5 that fault value, which is arranged,.
Aging refers to the average breakdown probability of the transformer of same type.Design factor determines transformer terminal short circuit
When winding in the relative risk of mechanical movement or deformation.
Winding deformation major insulation data, identification, which is mainly based upon capacitance and short-circuit impedance or other, can reflect transformer
The design parameter relationship changed between geometric distance between adjacent winding.
In some embodiments, winding overheat may consider following situation:
Thermal design refers to based on including that temperature distribution is non-uniform or the particular designs such as the different type of cooling are made for inside transformer
At winding privileged site be abnormal overheat, and can suffer from paper insulation occur heat deteriorate risk.
Fiber thermal decomposition, setting are different from domestic general three-ratio method, and judging theoretical basis then is due in winding
Cellulose insulation body thermal decomposition generate CO and CO2Gas, the abnormal high-content of these gases be in paper overaging and
The instruction of brittleness risk.
Oil guard mode decomposes relative risk mainly for thermally-induced transformer oil, and constant oily storage system helps
The content of moisture and oxygen in limitation oil, and reduce associated thermal decomposition risk.
Load, the risk of thermal decomposition is associated with the load of transformer, and the transformer with higher load usually has
Higher winding temperature can accelerate insulation ag(e)ing；
Capacity parameter actual value, the square root for the amount of trying to please, the bigger stray transformer flux of capacity is bigger, is less susceptible to control heat
Point temperature rise.
Aging, meaning are the bearable load that setting transformer is simulated according to hot spot under maximum operating temperature, guidance
The runing time of transformer extension high load.
In some embodiments, following situation may be considered around insulation breakdown:
Insulation Coordination, the main matching degree for examining design value and rated value.
Arrester type refers to that the old transformer with gap arrester may be than having newer ZnO arrester
Transformer lives through higher overvoltage, insulation breakdown risk with higher, such factor also available transient overvoltage factor
Instead of.
Insulating Design family defect refers to that the transformer of known defect or certain component or the insulation such as material or design concept are set
Meter is with dangerous with higher insulation breakdown.
Arc discharge, reference source be DGA (oil chromatography) acetylene value abnormal level.
Shelf depreciation, reference source are the abnormal levels from DGA (oil chromatography) hydrogen value；Standard oil test result is at this
Scoring specific gravity in unit is very big, while the present invention claims oxidation preventive content and interfacial tension are included in emphasis examination value.
Oily dielectric coefficient refers to that tool filling transformer is more than that oil degradation recommends the test result of limiting value to have higher Jie
Matter punctures risk.
In some embodiments, attachment failure may consider following situation:
On-load voltage regulating switch type refers to that different arc quenching methods will lead to different grades of failure risk, vacuum extinction
For system under the premise of guaranteeing its vacuum degree, operation risk is lower than traditional oils arc quenching method.
On-load voltage regulating switch DGA (oil chromatography) is added in special circumstances.
Casing family defect can be directly obtained according to historical data from casing-type.
Test on bushing diagnosis refers to that the casing obviously increased with high power factor or power factor has breakdown wind
Danger.
Oil pump device is introduced, is due to the risk of ball bearing pump carrying pump usually with higher, such pump exists will
Metal is discharged into transformer and the risk that makes main transformer break down.
The operation time limit is more than that 20 years on-load voltage regulating switch or casing breakdown risk obviously increase.
In some embodiments, random fault may consider following situation:
Transformer type refers to specific transformer type, and such as phase-shifting transformer and industrial transformers, usually display is than it
The transformer breakdown risk of his type is higher.
Environment, is influence of the environment of transformer station high-voltage side bus to breakdown risk, such as the influence in geographical location, populously
The transformer of area high energy industrial area breakdown risk usually with higher, or be subjected to short-circuit impact electric current frequently or switch motion
The risk of frequent transformer breakdown can also rise, and also include filthy and salt dirt etc..
Seismic factors refer to the transformer in the region for shaking risk higher when an earthquake occurs since winding moves
Or casing or other attachmentes damage and bear higher breakdown risk.
Oil stream electrification refers to that the specific type transformer generated in special time period has higher since flowing is powered
Breakdown frequency.
The above citing, can according to the thought of the application, by mode appropriate as technical parameter or economic parameters, from
And it is based on step 103-105, obtain the net assessment parameter ENS of group's transformerx.As shown in Fig. 2, showing with above-mentioned ginseng
The diagram that number is given a mark, whereinIndicate that the influence factor uses multiplying,It indicates that the factor is only overlaying relation, makes
Use add operation.It should be noted that it is in different considerations and distinguishes mode, technical parameter and economic parameters not have absolutely
Pair meaning variation or adjustment might have for different applications.
Second aspect, as shown in figure 3, the application provides a kind of group's transformer health Evaluation device, comprising:
Module 301 is obtained, for obtaining the economic parameters and technical parameter of group's transformer；
Preprocessing module 302, for being pre-processed to economic parameters and technical parameter；
Processing module 303, for being based on pretreated as a result, generating economic evaluation parameter and technology evaluation parameter respectively；
And it is based on economic evaluation parameter and technology evaluation parameter, generate net assessment parameter；
Evaluation module 304 assesses the healthy shape of group's transformer for being based on net assessment parameter and multiple preset ranges
Condition.
In possible implementation, economic parameters includes acquisition cost, maintenance cost, the profit of acquisition, transportation cost, peace
Dress up the cost of unit time when this and equipment fault；
Technical parameter includes oil chromatography code test data, load, power factor, upper layer oil temperature, partial discharge amount and dielectric loss amount.
In possible implementation, preprocessing module 302 is specifically used for:
It establishes data call path, data normalization, supplement required quantity of state and character subset preliminary screening.
In possible implementation, processing module 303 is specifically used for:
It to pretreated economic parameters and technical parameter, is given a mark and/or is weighted, generate economic evaluation parameter and skill
Art assesses parameter.
It, can be specific just like shown in Fig. 4 based on a kind of group's transformer health Evaluation device provided by the present application
Assessment device frame structure, wherein t11-tni be obtain technical parameter, e11-eni be acquisition economic parameters；In advance
Processing VT and pretreatment VE belong to preprocessing module 302, for pre-processing to economic parameters and technical parameter.1T-4T
It is the pretreated based on technical parameter of processing module 303 as a result, generation technique assesses parameter TIXPart；1E-4E is processing
Module 303 pretreated based on economic parameters is as a result, generate economic evaluation parameter EIXPart.Specific embodiment can
With according to above-mentioned method, details are not described herein.
The third aspect, as shown in figure 5, the application provides a kind of group's transformer health Evaluation system, including assessment
Device 1, the concrete composition for assessing device 1 are as shown in Figure 3.
It further include communication device 2, data input device 3 and online sensing device 4, assessment dress in possible implementation
1 is set to communicate by communication device 2 with data input device 3 and the foundation of online sensing device 4；
Data input device 3 is configured to receive the economic evaluation parameter and technology evaluation parameter of input；
Online sensing device 4, is configured to the status data of monitoring group's transformer, and status data includes technology evaluation ginseng
Number.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or the device that include a series of elements not only include those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or device institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including being somebody's turn to do
There is also other identical elements in the process, method of element, article or device.
Those of ordinary skill in the art may be aware that mould described in conjunction with the examples disclosed in the embodiments of the present disclosure
Block and algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually
It is implemented in hardware or software, the specific application and design constraint depending on technical solution.Professional technician
Each specific application can be used different methods to achieve the described function, but this realization is it is not considered that exceed
The scope of the present invention.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and module, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
In embodiment provided herein, it should be understood that unless existing clear between the step of embodiment of the method
Sequencing, otherwise execution sequence can arbitrarily adjust.Disclosed device and method, may be implemented in other ways.
For example, the apparatus embodiments described above are merely exemplary, for example, the division of the module, only a kind of logic
Function division, there may be another division manner in actual implementation, such as multiple module or components can combine or can collect
At another system is arrived, or some features can be ignored or not executed.Another point, shown or discussed mutual coupling
It closes or direct-coupling or communication connection can be through some interfaces, the indirect coupling or communication connection of device or module can be with
It is electrically mechanical or other forms.
It will be appreciated by those of skill in the art that although some embodiments described herein include other embodiments is wrapped
Certain features for including rather than other feature, but the combination of the feature of different embodiments mean in scope of the present application it
It is interior and form different embodiments.
Although being described in conjunction with the accompanying presently filed embodiment, those skilled in the art can not depart from this Shen
Various modifications and variations are made in the case where spirit and scope please, such modifications and variations are each fallen within by appended claims
Within limited range.
Claims (10)
1. a kind of group's transformer health Evaluation method characterized by comprising
Obtain the economic parameters and technical parameter of group's transformer；
The economic parameters and the technical parameter are pre-processed；
Based on pretreated as a result, generating economic evaluation parameter and technology evaluation parameter respectively；
Based on the economic evaluation parameter and the technology evaluation parameter, net assessment parameter is generated；
Based on the net assessment parameter and multiple preset ranges, the health status of group's transformer is assessed.
2. appraisal procedure as described in claim 1, which is characterized in that the economic parameters include acquisition cost, maintenance cost,
The cost of unit time when the profit of acquisition, transportation cost, installation cost and equipment fault；
The technical parameter includes oil chromatography code test data, load, power factor, upper layer oil temperature, partial discharge amount and dielectric loss amount.
3. appraisal procedure as claimed in claim 2, which is characterized in that it is described to the economic parameters and the technical parameter into
Row pretreatment, including establish data call path, data normalization, supplement required quantity of state and character subset preliminary screening.
4. appraisal procedure as claimed in claim 3, which is characterized in that described to be based on pretreated as a result, generating respectively economical
Assess parameter and technology evaluation parameter, comprising:
It to the pretreated economic parameters and the technical parameter, is given a mark and/or is weighted, generate the economic evaluation
Parameter and the technology evaluation parameter.
5. a kind of group's transformer health Evaluation device characterized by comprising
Module is obtained, for obtaining the economic parameters and technical parameter of group's transformer；
Preprocessing module, for being pre-processed to the economic parameters and the technical parameter；
Processing module, for being based on pretreated as a result, generating economic evaluation parameter and technology evaluation parameter respectively；And base
In the economic evaluation parameter and the technology evaluation parameter, net assessment parameter is generated；
Evaluation module assesses the health status of group's transformer for being based on the net assessment parameter and multiple preset ranges.
6. as claimed in claim 5 assessment device, which is characterized in that the economic parameters include acquisition cost, maintenance cost,
The cost of unit time when the profit of acquisition, transportation cost, installation cost and equipment fault；
The technical parameter includes oil chromatography code test data, load, power factor, upper layer oil temperature, partial discharge amount and dielectric loss amount.
7. assessment device as claimed in claim 6, which is characterized in that the preprocessing module is specifically used for:
It establishes data call path, data normalization, supplement required quantity of state and character subset preliminary screening.
8. assessment device as claimed in claim 7, which is characterized in that the processing module is specifically used for:
It to the pretreated economic parameters and the technical parameter, is given a mark and/or is weighted, generate the economic evaluation
Parameter and the technology evaluation parameter.
9. a kind of group's transformer health Evaluation system, which is characterized in that including such as claim 5 to 8 any one institute
The assessment device stated.
10. assessment device as claimed in claim 9, which is characterized in that further include communication device, data input device and online
Sensing device, the assessment device are established by the communication device and the data input device and the online sensing device
Communication；
The data input device is configured to receive the economic evaluation parameter and technology evaluation parameter of input；
The online sensing device is configured to the status data of monitoring group's transformer, and the status data includes technology evaluation
Parameter.
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