CN104112239B - A kind of Transformer condition evaluation and device of the analysis of utilization benchmark state - Google Patents

A kind of Transformer condition evaluation and device of the analysis of utilization benchmark state Download PDF

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CN104112239B
CN104112239B CN201410315461.8A CN201410315461A CN104112239B CN 104112239 B CN104112239 B CN 104112239B CN 201410315461 A CN201410315461 A CN 201410315461A CN 104112239 B CN104112239 B CN 104112239B
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transformer
property
performance
assessment
factor
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CN104112239A (en
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吕启深
林火华
章彬
黄炜昭
姚森敬
李林发
黄荣辉
卢文华
文正其
向冬冬
施磊
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Shenzhen Power Supply Co ltd
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Wuhan NARI Ltd
Shenzhen Power Supply Bureau Co Ltd
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Abstract

The present invention provides a kind of Transformer condition evaluation and device of the analysis of utilization benchmark state, and the method includes:According to transformer key feature amount, key property and Chemical Apparatus Importance Classification assessment are carried out to transformer;And mechanical property evaluation, electric property assessment, hot property assessment and annex Performance Evaluation are carried out to transformer;According to the result that key property and Chemical Apparatus Importance Classification are assessed, the combination property modifying factor of calculating transformer;Combination property modifying factor according to transformer is modified to the assessment result of transformer correspondence mechanical performance, electric property, hot property and annex performance, obtains the total benchmark state index of transformer;Total benchmark state index according to transformer determines the transformer and corresponding Strategies of Maintenance for needing to pay close attention to.The present invention proposes equipment " benchmark state " analysis on the basis of equipment state assessment guidelines, accurately understands equipment state, realizes arranging equipment key property to bad order by good, instructs the purpose of O&M decision-making.

Description

A kind of Transformer condition evaluation and device of the analysis of utilization benchmark state
Technical field
Field, more particularly to the transformer shape that a kind of utilization benchmark state is analyzed are evaluated the present invention relates to power transmission and transformation equipment state State appraisal procedure and device.
Background technology
Because present power network scale is increasing, so before tour maintenance is carried out to transformer, generally requiring to electricity Transformer state in net is estimated.Transformer state is estimated and usually chooses a number of significant condition amount, State to equipment is classified, and is formulated for Strategies of Maintenance and provides foundation.
At present, the foundation for generally being used to transformer assessment in power system industry is transformer state assessment guidelines, i.e., Transformer is divided into body, sleeve pipe, shunting switch, five parts of cooling system and non-ionizing energy loss, and choose can directly or The quantity of state of equipment state is characterized indirectly, and the influence degree of equipment safety operation is classified according to quantity of state.Quantity of state should Deduction of points value is together decided on by quantity of state degradation and weight, i.e. the quantity of state value that should deduct points multiplies equal to the basic deduction of points of the quantity of state With weight coefficient, do not deducted points when quantity of state is normal.
When transformer state is evaluated, the total deduction value and individual event deduction of points value for being first depending on each part determine unit status, Transformer overall evaluation result is comprehensively drawn further according to part evaluation result, transformer evaluation result includes normal, attention, exception With serious four kinds of states.Because state quantity of the equipment selected in existing transformer state assessment guidelines is generally field test data Information is measured and patrolled and examined, the running environment of equipment is not considered, is manufactured and designed the parameters such as information, the operation time limit and natural aging, caused Its evaluation is restricted with application effect, and its reflection directly perceived is to evaluate inaccurate to transformer state, for example to the operation time limit compared with Long or aging serious equipment lacks concern.
The content of the invention
For the undesirable situation of current transformer state evaluation effect, proposition equipment " benchmark state " of the present invention (Benchmark) analyze, on the basis of equipment state assessment guidelines, by from characteristic quantity preferably, characteristic quantity analyze, set up set Standby Ageing Model, equipment strength model, grid strength model, then package is aging, equipment intensity, the aspect of grid strength three are entered Row equipment health degree assess, solve equipment state on earth how, can normally run, it may occur however that fault rate have many on earth High problem deeply concerned so that can also be realized to the preliminary of the state of equipment in the case of the new experiment in scene or test data is lacked Analysis, realizes arranging equipment key property to bad order by good, instructs the purpose of O&M decision-making.
So-called benchmark state refer to equipment under power network and ambient intensity requirement, all regulation performances of equipment specified are maintained The state of normal operation.This definition has the connotation of following aspect:One is that " intensity requirement " is included residing for grid strength and equipment Ambient intensity;Two it is that " all regulation performances maintain normal operation " includes transformer mechanical performance, electric property, hot property, attached Part performance can maintain normal operation;Three be the first two condition for benchmark state, it is indispensable, complement one another, but equipment base Quasi- state is not changeless, and when intensity is improved to be required to a certain extent, environment division or all regulation performances can not Normal operation is maintained, its benchmark state can also become therewith.
In order to solve the above technical problems, the present invention provides a kind of Transformer condition evaluation of utilization benchmark state analysis, Including:
According to transformer key feature amount, key property and Chemical Apparatus Importance Classification assessment are carried out to transformer;And to described Transformer carries out mechanical property evaluation, electric property assessment, hot property assessment and annex Performance Evaluation;
According to the result that the key property and Chemical Apparatus Importance Classification are assessed, the combination property modifying factor of the transformer is calculated Son;
Combination property modifying factor according to the transformer is to transformer correspondence mechanical performance, electric property, heat The assessment result of performance and annex performance is modified, and obtains the total benchmark state index of transformer;
Total benchmark state index according to the transformer is ranked up to transformer, and according to the result determination needs of sequence The transformer and corresponding Strategies of Maintenance paid close attention to;
Wherein, the result assessed according to the key property and Chemical Apparatus Importance Classification, calculates the synthesis of the transformer The performance correction factor, including:
γ as the key property of transformation is set, δ is Chemical Apparatus Importance Classification;Then coordinates of the transformer A in δ-γ coordinate systems is (δA, γA), wherein 0≤δA≤1,0≤γAThe modifying factor F of≤1, transformer A is the point (δA, γA) arrive reference line l0Away from From,Wherein described reference line l0Equation be:X+y=0;Wherein F (A) is the modifying factor of transformer Function.
Wherein, the transformer key feature amount is included but is not limited to:Operation the time limit, temperature, humidity, installation site, away from Seashore distance, thunder and lightning density, environment species, oil chromatography, straight resistance, top-oil temperature, load coefficient, environment temperature;
The key property and Chemical Apparatus Importance Classification assessment of being carried out to transformer includes:According to the transformer key feature amount In the operation time limit, environmental factor, on-Line Monitor Device, accident defect factor, operation factor enter to the key property of transformer Row assessment;Transformer station's important level, substation transformer quantity in the transformer key feature amount, voltage class pair Importance degree of the transformer in power network is estimated.
Wherein, it is described that mechanical property evaluation, electric property assessment, hot property assessment and annex are carried out to the transformer Can assess includes:
To mechanical performance K1It is estimated, K1=f (K1_1,K1_2_1,K1_2_2,K1_31_11_21_2_11_2_2, ω1_3);Wherein, ω1_1、ω1_2、ω1_3Respectively design calculating, test assessment, the weight coefficient of post-installation review, three's sum It is 1;ω1_2_1、ω1_2_2Respectively short-circuit impedance and winding frequency response weight coefficient, K1_1The stabilization safety of verification is calculated for design Coefficient performance indications, K1_2_1It is impedance voltage result of the test performance indications, K1_2_2For winding frequency response test result performance refers to Mark, K1_3It is Effect of Short Circuit factor performance indications;
To electric property K2It is estimated, K2=f (K2_1,K2_2,K2_32_12_22_3);Wherein K2_1、K2_2、K2_3 With ω2_1、ω2_2、ω2_3Respectively oil dissolved gas, oil and winding D.C. resistance performance indications and its corresponding weight Coefficient;K2Span be [0,1];
To hot property K3It is estimated;Wherein k indication transformers actual motion The time limit, FEQAIt is equivalent burn-in value, LnIndication transformer ordinary life, N indication transformers have the operation time limit of partial data.
To annex performance K4It is estimated;K4=f (K4_1,K4_2,K4_3,K4_44_14_24_34_4), wherein K4_1,K4_2,K4_3,K4_4With ω4_14_24_34_4The performance indications and weight coefficient of the big performance of annex four are represented respectively, The big performance of the annex four includes sleeve pipe, shunting switch, cooling system, non-ionizing energy loss performance.
Wherein, the combination property modifying factor according to the transformer is to transformer correspondence mechanical performance, electricity The assessment result of gas performance, hot property and annex performance is modified, and obtaining the total benchmark state index of transformer includes:
The total benchmark state index BI=F*f (BI of transformerfactor* ω)=F* (BIfactor, W), wherein, F is modifying factor, BIfactor=(K1,K2,…,K4) it is each point of performance indications vector, W=(ω12,…,ω4) it is corresponding weight vectors.
Accordingly, the present invention also provides a kind of Transformer State Assessment device of utilization benchmark state analysis, including:
Performance estimation module, for according to transformer key feature amount, carrying out key property to transformer and equipment being important Degree assessment;And the transformer is carried out mechanical property evaluation, electric property assessment, hot property assessment and annex performance comment Estimate;
Modifying factor computing module, for the result assessed according to the key property and Chemical Apparatus Importance Classification, calculates described The combination property modifying factor of transformer;
Total benchmark state index computing module, for according to the combination property modifying factor of the transformer to the transformer The assessment result of correspondence mechanical performance, electric property, hot property and annex performance is modified, and obtains the total benchmark of transformer State index;
Strategies of Maintenance management module, is ranked up for the total benchmark state index according to the transformer to transformer, and The transformer paid close attention to is needed according to the result selection of sequence and select corresponding Strategies of Maintenance;
Wherein, the modifying factor computing module includes:
Coordinate system unit, for setting up δ-γ coordinate systems and reference line l0;The γ is the key property of transformation, and δ is to set Standby importance degree;Reference line l0Equation be:X+y=0;
First computing unit, for the modifying factor F of calculating transformer;Coordinates of the transformer A in δ-γ coordinate systems be (δA, γA), wherein 0≤δA≤1,0≤γA≤ 1, then the modifying factor F of transformer A is the point (δA, γA) arrive reference line l0's Distance,Wherein F (A) is the modifying factor function of transformer.
Wherein, performance estimation module includes:Characteristic quantity acquiring unit and assessment unit;
Characteristic quantity acquiring unit, for obtaining the transformer key feature amount;The transformer key feature amount includes But it is not limited to:Operation the time limit, temperature, humidity, installation site, away from seashore distance, thunder and lightning density, environment species, oil chromatography, directly Resistance, top-oil temperature, load coefficient, environment temperature;
First assessment unit, for the fortune in the transformer key feature amount according to acquired in the characteristic quantity acquiring unit The row time limit, environmental factor, on-Line Monitor Device, accident defect factor, operation factor are estimated to the key property of transformer; Transformer station's important level, substation transformer quantity, voltage class in the transformer key feature amount is to transformer Importance degree in power network is estimated.
Wherein, the performance estimation module also includes:
Second assessment unit, for the mechanical performance K to transformer1It is estimated, K1=f (K1_1,K1_2_1,K1_2_2, K1_31_11_21_2_11_2_21_3);Wherein, ω1_1、ω1_2、ω1_3Respectively design calculating, test assessment, The weight coefficient of post-installation review, three's sum is 1;ω1_2_1、ω1_2_2Respectively short-circuit impedance and winding frequency response weight coefficient, K1_1The buckling safety factor performance indications of verification, K are calculated for design1_2_1It is impedance voltage result of the test performance indications, K1_2_2 It is winding frequency response test result performance indications, K1_3It is Effect of Short Circuit factor performance indications;
3rd assessment unit, for transformer to gas performance K2It is estimated, K2=f (K2_1,K2_2,K2_32_1, ω2_22_3);Wherein K2_1、K2_2、K2_3With ω2_1、ω2_2、ω2_3Respectively oil dissolved gas, oil and direct current are electric The performance indications of resistance and its corresponding weight coefficient;K2Span be [0,1];
4th assessment unit, for hot property K3It is estimated;Wherein k tables Show the transformer actual motion time limit, FEQAIt is equivalent burn-in value, LnIndication transformer ordinary life, N indication transformers have complete number According to the operation time limit.
5th assessment unit, for annex performance K4It is estimated;K4=f (K4_1,K4_2,K4_3,K4_44_14_2, ω4_34_4), wherein K4_1,K4_2,K4_3,K4_4With ω4_14_24_34_4The performance of the big performance of annex four is represented respectively Index and weight coefficient, the big performance of the annex four include sleeve pipe, shunting switch, cooling system, non-ionizing energy loss performance.
Wherein, total benchmark state index computing module includes:
Data capture unit, combination property modifying factor, transformer correspondence machinery for obtaining the transformer The assessment result of performance, electric property, hot property and annex performance;
Second computing unit, for the combination property modifying factor according to the transformer to transformer correspondence machinery The assessment result of performance, electric property, hot property and annex performance is modified, and obtains the total benchmark state index of transformer BI;BI=F*f (BIfactor* ω)=F* (BIfactor, W), wherein, F is modifying factor, BIfactor=(K1,K2,…,K4) it is each Divide performance indications vector, W=(ω12,…,ω4) it is corresponding weight vectors.
The Transformer condition evaluation and device of utilization benchmark state provided by the present invention analysis taken into full account design, The parameter informations such as manufacture, experiment, environment, operation, record of examination, power network, realize equipment benchmark state analysis of key characteristic quantity It is preferred that, and difference analysis have been carried out to it according to the difference of voltage class, the operation time limit and Chemical Apparatus Importance Classification;Have studied simultaneously Influence ageing equipment, equipment intensity, the various factors of grid strength, and corresponding correlation model is established respectively.The present invention exists Consider ageing equipment, equipment intensity, grid strength, set up apparatus assembly and overall benchmark state analysis model, improve shape The accuracy and reliability of state assessment result, for O&M decision-making provides strong support and guidance.
Brief description of the drawings
Fig. 1 is that the Transformer condition evaluation first embodiment flow of the utilization benchmark state analysis that the present invention is provided is illustrated Figure;
Fig. 2 is that the Transformer condition evaluation second embodiment flow of the utilization benchmark state analysis that the present invention is provided is illustrated Figure;
Fig. 3 is transformer benchmark state index schematic diagram calculation;
Fig. 4 is the flow chart of transformer benchmark state analysis of two-dimensional risk model;
Fig. 5 is the Transformer State Assessment device first embodiment structural representation of the utilization benchmark state analysis that the present invention is provided Figure;
Fig. 6 is the Transformer State Assessment device second embodiment structural representation of the utilization benchmark state analysis that the present invention is provided Figure.
Specific embodiment
For the undesirable situation of current transformer state evaluation effect, proposition equipment " benchmark state " of the present invention (Benchmark) analyze, on the basis of equipment state assessment guidelines, by from characteristic quantity preferably, characteristic quantity analyze, set up set Standby Ageing Model, equipment strength model, grid strength model, then package is aging, equipment intensity, the aspect of grid strength three are entered Row equipment health degree assess, solve equipment state on earth how, can normally run, it may occur however that fault rate have many on earth High problem deeply concerned so that can also be realized to the preliminary of the state of equipment in the case of the new experiment in scene or test data is lacked Analysis, realizes arranging equipment key property to bad order by good, instructs the purpose of O&M decision-making.
It is the Transformer condition evaluation first embodiment stream of the utilization benchmark state analysis that the present invention is provided referring to Fig. 1 Journey schematic diagram.As illustrated, the Transformer condition evaluation includes:
Step S101, according to transformer key feature amount, key property and Chemical Apparatus Importance Classification assessment is carried out to transformer;With And mechanical property evaluation, electric property assessment, hot property assessment and annex Performance Evaluation are carried out to the transformer;
Step S102, according to the result that the key property and Chemical Apparatus Importance Classification are assessed, calculates the synthesis of the transformer The performance correction factor;
Step S103, the combination property modifying factor according to the transformer is to transformer correspondence mechanical performance, electricity The assessment result of gas performance, hot property and annex performance is modified, and obtains the total benchmark state index of transformer;
Step S104, the total benchmark state index according to the transformer is ranked up to transformer, and according to the knot of sequence Fruit determines the transformer and corresponding Strategies of Maintenance for needing to pay close attention to.
It is the Transformer condition evaluation second embodiment stream of the utilization benchmark state analysis that the present invention is provided referring to Fig. 2 Journey schematic diagram.In the present embodiment, the idiographic flow of each step of the Transformer condition evaluation will be described in greater detail And operation content.As shown in Fig. 2 the Transformer condition evaluation includes:
Step S201, obtains transformer key feature amount, and the transformer key feature amount is included but is not limited to:Operation year Limit, temperature, humidity, installation site, away from seashore distance, thunder and lightning density, environment species, oil chromatography, straight resistance, top-oil temperature, load Coefficient, environment temperature.Table 1 is that transformer key feature amount sorts out table.
Table 1
Step S202, according to transformer key feature amount, key property and Chemical Apparatus Importance Classification assessment is carried out to transformer.More For specifically, the key property and Chemical Apparatus Importance Classification assessment of being carried out to transformer includes:According to the transformer key feature The key property of the time limit, environmental factor, on-Line Monitor Device, accident defect factor, operation factor to transformer is run in amount It is estimated;Transformer station's important level, substation transformer quantity in the transformer key feature amount, voltage class Importance degree to transformer in power network is estimated.
Step S203, according to transformer key feature amount, carries out mechanical property evaluation, electric property and comments to the transformer Estimate, hot property is assessed and annex Performance Evaluation;More specifically, to mechanical performance K1It is estimated, K1=f (K1_1,K1_2_1, K1_2_2,K1_31_11_21_2_11_2_21_3);Wherein, ω1_1、ω1_2、ω1_3Respectively design is calculated, tested Assessment, the weight coefficient of post-installation review, three's sum are 1;ω1_2_1、ω1_2_2Respectively short-circuit impedance and winding frequency response weight Coefficient, K1_1The buckling safety factor performance indications of verification, K are calculated for design1_2_1It is impedance voltage result of the test performance indications, K1_2_2It is winding frequency response test result performance indications, K1_3It is Effect of Short Circuit factor performance indications;
To electric property K2It is estimated, K2=f (K2_1,K2_2,K2_32_12_22_3);Wherein K2_1、K2_2、K2_3 With ω2_1、ω2_2、ω2_3Respectively oil dissolved gas, oil and winding D.C. resistance performance indications and its corresponding weight Coefficient;K2Span be [0,1], and its value is bigger, and electric property is better.
To hot property K3It is estimated, mainly includes that hot spot temperature of winding is calculated, life loss percentage is calculated and heat Performance Evaluation.Wherein the k indication transformers actual motion time limit, FEQAIt is equivalent burn-in Value, LnIndication transformer ordinary life, N indication transformers have the operation time limit of partial data.Its span is 0≤K3≤1,0 Apparatus insulated life termination is represented, 1 represents that the apparatus insulated life-span is good, the equipment equivalent to newly putting into operation.
To annex performance K4It is estimated;K4=f (K4_1,K4_2,K4_3,K4_44_14_24_34_4), wherein K4_1,K4_2,K4_3,K4_4With ω4_14_24_34_4The performance indications and weight coefficient of the big performance of annex four are represented respectively. It will be appreciated by persons skilled in the art that its specific appraisal procedure as shown in figure 3, the specific method of other performance indications and this It is similar.
Step S204, according to the result that the key property and Chemical Apparatus Importance Classification are assessed, calculates the synthesis of the transformer The performance correction factor.More specifically, modifying factor builds two by key property assessment result and Chemical Apparatus Importance Classification assessment result Dimension risk model is obtained, and not only the combination property of equipment below can be modified by modifying factor, while can be with root Sorted according to the size of modifying factor, pick out the larger equipment of modifying factor and paid close attention to.Two-dimentional risk model such as Fig. 4.Rule Determine reference line l0Equation be:X+y=0, γ are the key property of transformation, and δ is importance degree;Then a certain transformer A δ- Coordinate in γ coordinate systems is (δA, γA), wherein 0≤δA≤1,0≤γA≤ 1, then the modifying factor F of transformer A is defined to be somebody's turn to do Point arrives the distance of reference line, i.e.,Normalization can be obtainedModifying factor F It is bigger, then it represents that equipment should be of much attention in day-to-day operation.
It will be appreciated by persons skilled in the art that having no wanting on execution sequence between step S202 and step S203 Ask, after the completion of step S201 execution, step S202 and step S203 can just be performed at any time.Meanwhile, in step S202 It is unrelated with whether step S203 performs completion after the completion of execution, you can perform step S204.
Step S205, the combination property modifying factor according to the transformer is to transformer correspondence mechanical performance, electricity The assessment result of gas performance, hot property and annex performance is modified, and obtains the total benchmark state index of transformer.Specifically , the total benchmark state index calculation process of transformer is as shown in Figure 3.The total benchmark state index BI=F*f (BI of transformerfactor* ω)= F*(BIfactor, W), wherein, F is modifying factor, BIfactor=(K1,K2,…,K4) it is each point of performance indications vector, W=(ω1, ω2,…,ω4) it is corresponding weight vectors, F is modifying factor.BI is bigger for equipment overall performance index, shows that equipment performance is better, Equipment state is more healthy.
Step S206, the total benchmark state index according to the transformer is ranked up to transformer, and according to the knot of sequence Fruit determines the transformer and corresponding Strategies of Maintenance for needing to pay close attention to.BI is smaller for equipment overall performance index, shows correspondence transformation The performance of device is poorer, and equipment state is unhealthy, and out of order probability is higher, needs what is strengthened maintenance and make an inspection tour for this equipment Density.
The Transformer condition evaluation of utilization benchmark state provided by the present invention analysis taken into full account design, manufacture, The parameter informations such as experiment, environment, operation, record of examination, power network, realize the preferred of equipment benchmark state analysis of key characteristic quantity, And difference analysis have been carried out to it according to the difference of voltage class, the operation time limit and Chemical Apparatus Importance Classification;Have studied influence simultaneously Ageing equipment, equipment intensity, the various factors of grid strength, and corresponding correlation model is established respectively.The present invention is in synthesis Consider ageing equipment, equipment intensity, grid strength, set up apparatus assembly and overall benchmark state analysis model, the state of improve is commented The accuracy and reliability of result are estimated, for O&M decision-making provides strong support and guidance.
Corresponding, the present invention also provides a kind of Transformer State Assessment device of utilization benchmark state analysis, the transformer shape State apparatus for evaluating can realize the Transformer condition evaluation of above-mentioned utilization benchmark state analysis.
It is the Transformer State Assessment device first embodiment knot of the utilization benchmark state analysis that the present invention is provided referring to Fig. 5 Structure schematic diagram, as illustrated, the device includes:Performance estimation module 1, modifying factor computing module 2, total benchmark state index is calculated Module 3 and Strategies of Maintenance management module 4.
Performance estimation module 1, for according to transformer key feature amount, carrying out key property to transformer and equipment being important Degree assessment;And the transformer is carried out mechanical property evaluation, electric property assessment, hot property assessment and annex performance comment Estimate;
Modifying factor computing module 2, for the result assessed according to the key property and Chemical Apparatus Importance Classification, calculates described The combination property modifying factor of transformer;
Total benchmark state index computing module 3, for according to the combination property modifying factor of the transformer to the transformation The assessment result of device correspondence mechanical performance, electric property, hot property and annex performance is modified, and obtains the total base of transformer Quasi- state index;
Strategies of Maintenance management module 4, is ranked up for the total benchmark state index according to the transformer to transformer, and The transformer paid close attention to is needed according to the result selection of sequence and select corresponding Strategies of Maintenance.
It is the Transformer State Assessment device second embodiment knot of the utilization benchmark state analysis that the present invention is provided referring to Fig. 6 Structure schematic diagram.In the present embodiment, the Transformer State Assessment device analyzed using benchmark state will be described in greater detail The function of structure and each part.The device equally includes as a upper embodiment:Performance estimation module 1, modifying factor is calculated Module 2, total benchmark state index computing module 3 and Strategies of Maintenance management module 4.
More specifically, performance estimation module 1 includes:Characteristic quantity acquiring unit 11 and assessment unit 12;
Characteristic quantity acquiring unit 11, for obtaining the transformer key feature amount;The transformer key feature amount bag Include but be not limited to:Operation the time limit, temperature, humidity, installation site, away from seashore distance, thunder and lightning density, environment species, oil chromatography, directly Resistance, top-oil temperature, load coefficient, environment temperature;Table 1 is that transformer key feature amount sorts out table.
First assessment unit 12, in the transformer key feature amount according to acquired in the characteristic quantity acquiring unit The operation time limit, environmental factor, on-Line Monitor Device, accident defect factor, operation factor are commented the key property of transformer Estimate;Transformer station's important level, substation transformer quantity, voltage class in the transformer key feature amount is to transformation Importance degree of the device in power network is estimated.
Further, the performance estimation module 1 also includes:
Second assessment unit 13, for the mechanical performance K to transformer1It is estimated, K1=f (K1_1,K1_2_1,K1_2_2, K1_31_11_21_2_11_2_21_3);Wherein, ω1_1、ω1_2、ω1_3Respectively design calculating, test assessment, The weight coefficient of post-installation review, three's sum is 1;ω1_2_1、ω1_2_2Respectively short-circuit impedance and winding frequency response weight coefficient, K1_1The buckling safety factor performance indications of verification, K are calculated for design1_2_1It is impedance voltage result of the test performance indications, K1_2_2 It is winding frequency response test result performance indications, K1_3It is Effect of Short Circuit factor performance indications;
3rd assessment unit 14, for transformer to gas performance K2It is estimated, K2=f (K2_1,K2_2,K2_3, ω2_12_22_3);Wherein K2_1、K2_2、K2_3With ω2_1、ω2_2、ω2_3Respectively oil dissolved gas, oil and winding The performance indications of D.C. resistance and its corresponding weight coefficient;K2Span be [0,1];And its value is bigger, electric property Better.
4th assessment unit 15, for hot property K3It is estimated;Wherein k The indication transformer actual motion time limit, FEQAIt is equivalent burn-in value, LnIndication transformer ordinary life, N indication transformers have completely The operation time limit of data.Its span is 0≤K3≤ 1,0 represents apparatus insulated life termination, and 1 represents that the apparatus insulated life-span is good It is good, the equipment equivalent to newly putting into operation.
5th assessment unit 16, for annex performance K4It is estimated;K4=f (K4_1,K4_2,K4_3,K4_44_1, ω4_24_34_4), wherein K4_1,K4_2,K4_3,K4_4With ω4_14_24_34_4The big performance of annex four is represented respectively Performance indications and weight coefficient.It will be appreciated by persons skilled in the art that its specific appraisal procedure as shown in figure 3, other The specific method of performance indications is similar.
Modifying factor computing module 2 includes:The computing unit 22 of coordinate system unit 21 and first.
Coordinate system unit 21, for setting up δ-γ coordinate systems and reference line l0;The γ is the key property of transformation, and δ is Chemical Apparatus Importance Classification;Reference line l0Equation be:X+y=0;
First computing unit 22, for the modifying factor F of calculating transformer;Modifying factor by key property assessment result and Chemical Apparatus Importance Classification assessment result builds two-dimentional risk model and obtains, not only can be to the comprehensive of equipment below by modifying factor Can be modified, while can also be sorted according to the size of modifying factor, picking out the larger equipment of modifying factor carries out emphasis pass Note.Coordinates of the transformer A in δ-γ coordinate systems is (δA, γA), wherein 0≤δA≤1,0≤γA≤ 1, then transformer A repair Positive divisor F is the point (δA, γA) arrive reference line l0Distance,It is after normalizationModifying factor F is bigger, then it represents that equipment should be subject to more passes in day-to-day operation Note.
Total benchmark state index computing module 3 includes:The computing unit 32 of data capture unit 31 and second.
Data capture unit 31, combination property modifying factor, transformer correspondence machine for obtaining the transformer The assessment result of tool performance, electric property, hot property and annex performance;
Second computing unit 32, for the combination property modifying factor according to the transformer to transformer correspondence machine The assessment result of tool performance, electric property, hot property and annex performance is modified, and obtains the total benchmark state index of transformer BI;BI=F*f (BIfactor* ω)=F* (BIfactor, W), wherein, F is modifying factor, BIfactor=(K1,K2,…,K4) it is each Divide performance indications vector, W=(ω12,…,ω4) it is corresponding weight vectors.BI is bigger for equipment overall performance index, shows to set Standby performance is better, and equipment state is more healthy.
Strategies of Maintenance management module 4, is ranked up for the total benchmark state index according to the transformer to transformer, and The transformer paid close attention to is needed according to the result selection of sequence and select corresponding Strategies of Maintenance.Equipment overall performance index BI gets over It is small, show that the performance of correspondence transformer is poorer, equipment state is unhealthy, and out of order probability is higher, is needed for this equipment Strengthen maintenance and the density maked an inspection tour.
The Transformer State Assessment device of utilization benchmark state provided by the present invention analysis taken into full account design, manufacture, The parameter informations such as experiment, environment, operation, record of examination, power network, realize the preferred of equipment benchmark state analysis of key characteristic quantity, And difference analysis have been carried out to it according to the difference of voltage class, the operation time limit and Chemical Apparatus Importance Classification;Have studied influence simultaneously Ageing equipment, equipment intensity, the various factors of grid strength, and corresponding correlation model is established respectively.The present invention is in synthesis Consider ageing equipment, equipment intensity, grid strength, set up apparatus assembly and overall benchmark state analysis model, the state of improve is commented The accuracy and reliability of result are estimated, for O&M decision-making provides strong support and guidance.
One of ordinary skill in the art will appreciate that all or part of flow in realizing above-described embodiment method, can be The hardware of correlation is instructed to complete by computer program, described program can be stored in a computer read/write memory medium In, the program is upon execution, it may include such as the flow of the embodiment of above-mentioned each method.Wherein, described storage medium can be magnetic Dish, CD, read-only memory (Read-Only Memory, ROM) or random access memory (Random Access Memory, RAM) etc..
Above content is to combine specific preferred embodiment further description made for the present invention, it is impossible to assert Specific implementation of the invention is confined to these explanations.For general technical staff of the technical field of the invention, On the premise of not departing from present inventive concept, some simple deduction or replace can also be made, should be all considered as belonging to of the invention Protection domain.

Claims (8)

1. the Transformer condition evaluation that a kind of utilization benchmark state is analyzed, it is characterised in that including:
According to transformer key feature amount, key property and Chemical Apparatus Importance Classification assessment are carried out to transformer;And to the transformation Device carries out mechanical property evaluation, electric property assessment, hot property assessment and annex Performance Evaluation;
According to the result that the key property and Chemical Apparatus Importance Classification are assessed, the combination property modifying factor of the transformer is calculated;
Combination property modifying factor according to the transformer is to transformer correspondence mechanical performance, electric property, hot property Assessment result with annex performance is modified, and obtains the total benchmark state index of transformer;
Total benchmark state index according to the transformer is ranked up to transformer, and determines to need emphasis according to the result for sorting The transformer of concern and corresponding Strategies of Maintenance;
Wherein, the result assessed according to the key property and Chemical Apparatus Importance Classification, calculates the combination property of the transformer Modifying factor, including:
γ as the key property of transformation is set, δ is Chemical Apparatus Importance Classification;Then coordinates of the transformer A in δ-γ coordinate systems is (δA, γA), wherein 0≤δA≤1,0≤γAThe modifying factor F of≤1, transformer A is the point (δA, γA) arrive reference line l0Distance,Wherein described reference line l0Equation be:X+y=0;Wherein F (A) is the modifying factor letter of transformer Number.
2. as claimed in claim 1 using the Transformer condition evaluation of benchmark state analysis, it is characterised in that the transformation Device key feature amount is included but is not limited to:Operation the time limit, temperature, humidity, installation site, away from seashore distance, thunder and lightning density, environment Species, oil chromatography, straight resistance, top-oil temperature, load coefficient, environment temperature;
The key property and Chemical Apparatus Importance Classification assessment of being carried out to transformer includes:According in the transformer key feature amount The operation time limit, environmental factor, on-Line Monitor Device, accident defect factor, operation factor are commented the key property of transformer Estimate;Transformer station's important level, substation transformer quantity, voltage class in the transformer key feature amount is to transformation Importance degree of the device in power network is estimated.
3. as claimed in claim 2 using the Transformer condition evaluation of benchmark state analysis, it is characterised in that described to institute State transformer carry out mechanical property evaluation, electric property assessment, hot property assessment and annex Performance Evaluation include:
To mechanical performance K1It is estimated, K1=f (K1_1,K1_2_1,K1_2_2,K1_31_11_21_2_11_2_21_3); Wherein, ω1_1、ω1_2、ω1_3Calculating, test assessment, the weight coefficient of post-installation review are respectively designed, three's sum is 1; ω1_2_1、ω1_2_2Respectively short-circuit impedance and winding frequency response weight coefficient, K1_1The buckling safety factor of verification is calculated for design Performance indications, K1_2_1It is impedance voltage result of the test performance indications, K1_2_2It is winding frequency response test result performance indications, K1_3It is Effect of Short Circuit factor performance indications;
To electric property K2It is estimated, K2=f (K2_1,K2_2,K2_32_12_22_3);Wherein K2_1、K2_2、K2_3With ω2_1、ω2_2、ω2_3Respectively oil dissolved gas, oil and winding D.C. resistance performance indications and its corresponding weight system Number;K2Span be [0,1];
To hot property K3It is estimated;The wherein k indication transformers actual motion time limit, FEQAIt is equivalent burn-in value, LnIndication transformer ordinary life, N indication transformers have the operation time limit of partial data;
To annex performance K4It is estimated;K4=f (K4_1,K4_2,K4_3,K4_44_14_24_34_4), wherein K4_1, K4_2,K4_3,K4_4With ω4_14_24_34_4The performance indications and weight coefficient of the big performance of annex four are represented respectively, it is described The big performance of annex four includes sleeve pipe, shunting switch, cooling system, non-ionizing energy loss performance.
4. as claimed in claim 3 using the Transformer condition evaluation of benchmark state analysis, it is characterised in that the basis The combination property modifying factor of the transformer is to transformer correspondence mechanical performance, electric property, hot property and annex The assessment result of energy is modified, and obtaining the total benchmark state index of transformer includes:
The total benchmark state index BI=F*f (BI of transformerfactor* ω)=F* (BIfactor, W), wherein, F is modifying factor, BIfactor=(K1,K2,…,K4) it is each point of performance indications vector, W=(ω12,…,ω4) it is corresponding weight vectors.
5. the Transformer State Assessment device that a kind of utilization benchmark state is analyzed, it is characterised in that including:
Performance estimation module, for according to transformer key feature amount, carrying out key property to transformer and Chemical Apparatus Importance Classification being commented Estimate;And mechanical property evaluation, electric property assessment, hot property assessment and annex Performance Evaluation are carried out to the transformer;
Modifying factor computing module, for the result assessed according to the key property and Chemical Apparatus Importance Classification, calculates the transformation The combination property modifying factor of device;
Total benchmark state index computing module, for the combination property modifying factor according to the transformer to transformer correspondence The assessment result of mechanical performance, electric property, hot property and annex performance is modified, and obtains the total benchmark state of transformer and refers to Mark;
Strategies of Maintenance management module, is ranked up for the total benchmark state index according to the transformer to transformer, and foundation The result selection of sequence needs the transformer paid close attention to and selects corresponding Strategies of Maintenance;
Wherein, the modifying factor computing module includes:
Coordinate system unit, for setting up δ-γ coordinate systems and reference line l0;The γ is the key property of transformation, and δ is that equipment is important Degree;Reference line l0Equation be:X+y=0;
First computing unit, for the modifying factor F of calculating transformer;Coordinates of the transformer A in δ-γ coordinate systems is (δA, γA), wherein 0≤δA≤1,0≤γA≤ 1, then the modifying factor F of transformer A is the point (δA, γA) arrive reference line l0Distance,Wherein F (A) is the modifying factor function of transformer.
6. as claimed in claim 5 using the Transformer State Assessment device of benchmark state analysis, it is characterised in that Performance Evaluation Module includes:Characteristic quantity acquiring unit and assessment unit;
Characteristic quantity acquiring unit, for obtaining the transformer key feature amount;The transformer key feature amount include but not It is limited to:The operation time limit, temperature, humidity, installation site, away from seashore distance, thunder and lightning density, environment species, oil chromatography, straight resistance, push up Layer oil temperature, load coefficient, environment temperature;
First assessment unit, for the operation year in the transformer key feature amount according to acquired in the characteristic quantity acquiring unit Limit, environmental factor, on-Line Monitor Device, accident defect factor, operation factor are estimated to the key property of transformer;According to Transformer station's important level, substation transformer quantity, voltage class in the transformer key feature amount are to transformer in electricity Importance degree in net is estimated.
7. as claimed in claim 6 using the Transformer State Assessment device of benchmark state analysis, it is characterised in that the performance Evaluation module also includes:
Second assessment unit, for the mechanical performance K to transformer1It is estimated, K1=f (K1_1,K1_2_1,K1_2_2,K1_3, ω1_11_21_2_11_2_21_3);Wherein, ω1_1、ω1_2、ω1_3Respectively design calculating, test assessment, operation The weight coefficient of examination, three's sum is 1;ω1_2_1、ω1_2_2Respectively short-circuit impedance and winding frequency response weight coefficient, K1_1For Design calculates the buckling safety factor performance indications of verification, K1_2_1It is impedance voltage result of the test performance indications, K1_2_2It is winding Frequency response test result performance indications, K1_3It is Effect of Short Circuit factor performance indications;
3rd assessment unit, for transformer to gas performance K2It is estimated, K2=f (K2_1,K2_2,K2_32_12_2, ω2_3);Wherein K2_1、K2_2、K2_3With ω2_1、ω2_2、ω2_3Respectively oil dissolved gas, oil and winding D.C. resistance Performance indications and its corresponding weight coefficient;K2Span be [0,1];
4th assessment unit, for hot property K3It is estimated;Wherein k represents change The depressor actual motion time limit, FEQAIt is equivalent burn-in value, LnIndication transformer ordinary life, N indication transformers have partial data The operation time limit;
5th assessment unit, for annex performance K4It is estimated;K4=f (K4_1,K4_2,K4_3,K4_44_14_2, ω4_34_4), wherein K4_1,K4_2,K4_3,K4_4With ω4_14_24_34_4The performance of the big performance of annex four is represented respectively Index and weight coefficient, the big performance of the annex four include sleeve pipe, shunting switch, cooling system, non-ionizing energy loss performance.
8. as claimed in claim 7 using the Transformer State Assessment device of benchmark state analysis, it is characterised in that total base Quasi- state index computing module includes:
Data capture unit, for obtain the transformer combination property modifying factor, the transformer correspondence mechanical performance, The assessment result of electric property, hot property and annex performance;
Second computing unit, for the combination property modifying factor according to the transformer to transformer correspondence mechanicalness The assessment result of energy, electric property, hot property and annex performance is modified, and obtains the total benchmark state index BI of transformer; BI=F*f (BIfactor* ω)=F* (BIfactor, W), wherein, F is modifying factor, BIfactor=(K1,K2,…,K4) it is each point Performance indications vector, W=(ω12,…,ω4) it is corresponding weight vectors.
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