CN104732058B - A kind of appraisal procedure of various dimensions transmission facility state - Google Patents
A kind of appraisal procedure of various dimensions transmission facility state Download PDFInfo
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Abstract
The present invention has initially set up the transmission facility state evaluation model with multi-layer framework, establishes special evaluation period and special track section.Then the basic methods of marking using accumulated deduction method as each parameter in evaluation model, combining assessment period and evaluation section provide each parameter actual weight and actual deduction of points value.Each sub-unit of transmission facility, tower position section, overall score value, and the integrality of the two dimension Comprehensive Evaluation transmission facilities of combining assessment period and evaluation section are finally calculated according to parameter score value successively.The present invention has merged circuit score, time, the information of these three dimensions of space, and method for evaluating state has a comprehensive and expansibility, and last various dimensions evaluation conclusion is close to the real running status of transmission facility.
Description
Technical field
The present invention relates to a kind of appraisal procedure of various dimensions transmission facility state.
Background technology
The safety of transmission facility is power grid security, the reliable, basis of stable operation, equipment state is carried out effectively, accurately
Assessment, diagnosis and prediction, can not only directly influence follow-up risk assessment and maintenance decision, and improve power supply reliability
And the important channel of operation of power networks intelligent level.
Due to the features such as transmission facility distribution area is wide, sub-unit is numerous, suffered natural environment influence is big, transmission facility
State evaluation is faced with comprehensive and accuracy problem.Comprehensive and accurate state estimation is carried out, it is necessary to fusion device shape
The multi-source heterogeneous information such as state information, operation of power networks information and environmental state information, history, current and future with reference to power equipment
State, condition evaluation results are drawn by certain standard and intelligent evaluation method.
At present, the state evaluation research both at home and abroad to transmission facility is mainly reflected in following two aspects：1. based on transmission of electricity
(the icing monitoring of wire, measurement are realized in such as measure traverse line tension force and inclination angle to the monitoring technology of the electrical or mechanical aspect parameter of equipment
The salt of insulator is close and leakage current realizes that the filthy of insulator monitors), by some macroscopic views based on single or a small amount of parameter
State analysis, such as shaft tower gradient, antitheft parameter assess shaft tower state, according to icing, windage yaw, waves etc. and to be led to assess
Wire state.2. it is based on mathematics appraisal (such as fuzzy mathematical model, Combined weighting model, grey comprehensive evaluation model), root
According to the various aspects information such as Rated life, load condition, Test Information, environment temperature, Comprehensive Evaluation equipment state.More than
Both sides research holds the overall health status and state development trend of transmission facility without forensic science.
In terms of the prior art of method for evaluating state, widely used is accumulated deduction method.Its calculating process is to combine
The various informations such as equipment running situation over the years, routine test, inspection, operating condition, on-line monitoring, description each parameter of equipment exist
Point deduction weight and deduction of points value under different degradations, and then calculate the overall deduction of points value of equipment and evaluated with reference to score table
Equipment running status.At present in the related specifications such as the transmission facility assessment guidelines of national grid and south electric network, professional standard text
Accumulated deduction method is all used in part as primary evaluation method, it is only qualified and exceeded two kinds to be the advantages of this method to have broken
State, make equipment state classification thinner, be easy to digital management, but standard is for absolute, to quantity of state ambiguity and not true
Qualitatively consider deficiency.
The content of the invention
The present invention carries out various dimensions assessment from quantity of state score, evaluation period and evaluation section etc. to outlet line,
Establish a kind of transmission facility state evaluating method for combining state, time, these three dimensions of space.The present invention is initially set up
Transmission facility state evaluation model with multi-layer framework, establish special evaluation period and special track section.Then will be tired
Basic methods of marking of the deduction of points method as each parameter in evaluation model is counted, it is real that combining assessment period and evaluation section provide each parameter
Border weight and actual deduction of points value.Each sub-unit of transmission facility, tower position section, overall is finally calculated according to parameter score value successively
Score value, and the integrality of the two dimension Comprehensive Evaluation transmission facilities of combining assessment period and evaluation section.
Variable weight of the present invention based on combination weighting obscures transmission facility state evaluating method, comprises the following steps：
Step S1, establish the transmission facility state evaluation model with multi-layer framework, and asserted state evaluating body
System；
Step S2, the evaluation method and standard of deducting point of each parameter are described, define special evaluation period and special circuit
Section, combining assessment period and evaluation section the two dimensions establish the calculating side of each parameter actual weight and actual deduction of points value
Method；
Step S3, each sub-unit of transmission facility, tower position section, overall score value are calculated according to parameter score value successively,
And the integrality of the two dimension Comprehensive Evaluation transmission facilities of combining assessment period and evaluation section.
In above-mentioned transmission facility state evaluating method, the step S1 includes：
Based on transmission facility state estimation is comprehensive and the principle of scalability, it is established that as shown in Figure 1 has multilayer
The state evaluation model of framework.State evaluation model is divided into three transmission facility part, tower position section, overall circuit evaluation layers.
Transmission facility is divided into 9 parts by transmission facility component layer, and the evaluation parameter of each part is as shown in table 1；Tower position section layer is by each
The evaluation of base tower position section forms, and the state of each sub-unit influences each other in the section of adjacent towers position；Overall line layer refers to defeated to whole piece
The evaluation of electric line, it combines each sub-unit, the status information of tower position section and evaluation period, the various dimensions information such as section, most
The overall merit of circuit is realized eventually.
The state evaluation parameter of 1 each sub-unit of table
In above-mentioned transmission facility state evaluating method, the step S2 includes：
The evaluation method and standard of deducting point of each parameter are described, according to the distribution of the failure of circuit, external force, environment distribution etc. really
The special evaluation period of vertical circuit and special track section, while the time of evaluation, spatial information are converted into coefficient factor and melted
Close into the standard of deducting point of each parameter, establish each parameter actual weight with reference to actual evaluation period and evaluation section and reality is deducted points
The computational methods of value.
1) methods of marking and standard of deducting point of each parameter are established
Each parameter refers to all state evaluation parameters in table 1, parameter be combine existing directive/guide, professional standard,
What specification etc. obtained, the daily tour of the acquisition modes of parametric data.
Accumulated deduction method is used to the methods of marking of each parameter.The score range of equipment running status, full marks are established first
For 100 points, 0 point represents that equipment needs to overhaul immediately, and 100 points then represent equipment normal operation, without maintenance.According to quantity of state pair
The influence degree of equipment safety operation, equipment state is divided into level Four, represented to influence from small to large, it is respectively 1 that weight, which is set, 2,
3rd, 4, the degradation of quantity of state is also classified into level Four from light to heavy, corresponding basic deduction of points is 2,4,6,8 points, and deduction of points value is equal to
The weight of quantity of state is multiplied by deduction of points value.
2) particular time and special sector of transmission facility state evaluation are established
Transmission facility is wide due to its distribution area in the process of running, and suffered external force, natural environment influence are complicated and changeable,
Therefore the influence of time and locus is contemplated that in evaluation.By being distributed to the distribution of circuit failure over the years, external force, environment
Statistical analysis, establish the special evaluation period of transmission facility and special track section.
The special evaluation period takes place frequently the period (3~September) including thunderbolt, mountain fire takes place frequently the period (September~January next year), icing
Take place frequently the period (2 months November~next years), typhoon is taken place frequently the period (6~October), bird pest takes place frequently the period (9~November), external force is destroyed
Take place frequently the period (9~November).
It is special evaluation section including thunderbolt take place frequently section, mountain fire take place frequently section, icing take place frequently section, typhoon take place frequently section,
Take place frequently section, external force of bird pest is destroyed and taken place frequently section.Different geography is presented according to the difference of evaluation circuit in special evaluation section
Position, by taking the administrative circuit of south electric network as an example, thunderbolt takes place frequently section as Guangzhou office, Baise office, Wuzhou office, Liuzhou Ju Suo area under one's jurisdictions
Section, mountain fire take place frequently section as Liuzhou office, the administrative section of natural bridge office, and icing takes place frequently section as Kweiyang office, natural bridge office, Nanning office
Administrative section, typhoon take place frequently section for Guangzhou office, Kweiyang office, the administrative section of Wuzhou office, bird pest take place frequently section for Qujing office it is administrative
Section, external force destroy the section that takes place frequently as Guangzhou office, the administrative section of Kweiyang office.
3) actual weight and deduction of points value of each parameter are calculated
1. the fraction system of each parameter and weight division under regular time periods, section
Under regular time periods, section, using the state evaluation directive/guide of national standard, professional standard, state's net and south net as foundation, obtain
Weight division and standard of deducting point to each parameter.
2. the fraction system of each parameter and weight division under particular time or special sector
2.1 special evaluation periods
It is consistent in standard of deducting point and regular time periods, section when parameter is in the special evaluation period, but the weight of parameter and
Deduction of points value should be multiplied by specific factor on the basis of regular time periods.
Specific formula is as follows：
λ2=α1*λ1
Wherein：λ1Quantity of state weight under regular time periods, λ2For quantity of state weight, α under particular time1What it is for particular time is
The number factor.
K2=α1*K1
Wherein：K1Quantity of state deduction of points value substantially, K under regular time periods2For the deduction of points value substantially of quantity of state under particular time, α1For
The coefficient factor of particular time.
Coefficient factor α distribution function is drawn by the statistics of line fault over the years, defect monthly frequency, different special
The different period corresponds to different distribution functions.
2.1.1 icing takes place frequently the period
Between the icing of transmission line of electricity occurs mainly in 2 months November to next years, icing occurs especially when entering winter and cold spell in later spring
Frequency highest.Are almost all heavy ice-covering area temperature on average minimum month in January and December, but humidity is relatively small, because
This line ice coating is lighter with respect to November, 2 months.
Coefficient factor α obeys N (12,2) normal distribution, and formula is：
Wherein, x is month (January next year, x=13).Its value is as shown below, can be according to the period of state evaluation
Coefficient factor α value is drawn, so as to calculate the weight of quantity of state and deduction of points value under particular time.Due to considering during state evaluation
The influence of particular time, therefore the α values between 2 months November~next years are drawn from figure, the α values in other months take 1.
2.1.2 thunder and lightning takes place frequently the period
China's thunder and lightning mostly occurs at the beginning of summer, the end of spring and the beginning of summer, autumn late summer (5 to September), but is also not excluded for other season thunders and lightnings
The possibility to take place frequently, especially in south, as long as ground steam is abundant, cold and heat air crosses more, and air-flow lifting campaign is obvious, just easily
Produce the strong convective weathers such as thunder and lightning.
Coefficient factor α obeys t (3) t distributions, and formula is：
Its value is as shown below, due to only considering the influence of particular time, therefore the α values between May~September during evaluation
Drawn from figure, the α values in other months take 1.
2.1.3 mountain fire takes place frequently the period
The vegetation in environmental condition and line channel, surrounding enviroment, terrain and the personnel that mountain fire occurs live
Emotionally condition is closely related.Autumn and first winter (September~January next year) are all that mountain fire takes place frequently the period, because dry weather, more
Wind, now peasant burn the grass on waste land easily, cause mountain fire occurred frequently.In terms of the statistics that mountain fire trip accident occurs from each department, Guizhou, Yunnan
It is the district occurred frequently that mountain fire causes line tripping, Liuzhou office, the administrative circuit of Guizhou office are mountain fire guard key areas.
Coefficient factor α obeys weib (1,1.2) weibull distributions, and formula is：
α1(x)=1.2 (x-11)0.2exp(-(x-11)1.2)
Its value is as shown below, due to only considering the influence of particular time during evaluation, therefore in September~between January next year
α values show that the α values in other months take 1 from figure.
2.1.4 typhoon takes place frequently the period
Northern Hemisphere typhoon mostly occurred in 6~October.Coefficient factor α obeys beta (2,5) beta distribution, and x represents month,
Formula is：
Its value is as shown below, due to only considering the influence of particular time, therefore the α between 6~October during evaluation
Value show that the α values in other months take 1 from figure.
2.1.5 bird pest and external force take place frequently the period
Bird pest and external force period that takes place frequently all are 9~November.Coefficient factor α obeys cauchy (8,1) distribution,
Its value is as shown below, due to only considering the influence of particular time, therefore the α between 9~November during evaluation
Value show that the α values in other months take 1 from figure.
2.2 special evaluation sections
It is consistent in standard of deducting point and regular time periods, section when parameter is in special evaluation section, but the weight of parameter and
Deduction of points value should be multiplied by specific factor on the basis of regular time periods.
The specific formula of quantity of state weight is
λ3=α2*λ1
Wherein：λ1Quantity of state weight under regular time periods, λ3For quantity of state weight, α under special sector2What it is for special sector is
The number factor.
The specific formula of quantity of state deduction of points value is
K3=α2*K1
Wherein：K1Quantity of state deduction of points value, K under regular time periods3For quantity of state deduction of points value, α under particular time2For special sector
Coefficient factor.
Coefficient factor α2Value draw according to Frequent Troubles by the statistical analysis of failure dot density in Frequent Troubles region
The statistics (is trouble point in figure) in the geographical position of failure over the years in region, using Frequent Troubles regional center as density center O,
Show that failure dot density function φ, φ centered on O are normal distyribution function, be designated as φ~N (μ2, δ2 2).
Density function φ shows, more remote from density center, and the distribution of trouble point is more sparse, the probability of line failure
Smaller differences special sector corresponds to different coefficient factor α distribution functions.
The section 2.2.1 icing takes place frequently
Icing takes place frequently section as Kweiyang office, natural bridge office, the administrative section of Nanning office, and coefficient factor α obeys N's (0,1.63)
Normal distribution, formula are
Wherein x represents the distance (unit km) of parameter geographic location to be evaluated and special sector center.α values are such as
Shown in figure below, due to only considering the influence of particular time during evaluation, therefore when the α values that x is between 0~30km obtain from figure
Go out, α values when x is more than 30km take 1.
The section 2.2.2 thunderbolt takes place frequently
Thunderbolt takes place frequently section as Guangzhou office, Baise office, Wuzhou office, the administrative section of Liuzhou office, and coefficient factor α obeys index point
Cloth, formula are
Wherein x represents the distance (unit km) of parameter geographic location to be evaluated and special sector center.α values are such as
Shown in figure below, with x increase, α value is gradually intended to 1.
The section 2.2.3 mountain fire takes place frequently
Mountain fire takes place frequently section as Liuzhou office, the administrative section of natural bridge office, and coefficient factor α obeys f (2,5) f distributions, formula
For
Wherein x represents the distance (unit km) of parameter geographic location to be evaluated and special sector center.α values are such as
Shown in figure below, with x increase, α value is gradually intended to 1.
The section 2.2.4 typhoon takes place frequently
Typhoon takes place frequently section as Guangzhou office, the administrative section of Nanning office, and coefficient factor α obeys gamma points of gamma (1,2)
Cloth, formula are
Wherein x represents the distance (unit km) of parameter geographic location to be evaluated and special sector center.Wherein x tables
Show the distance (unit km) of parameter geographic location to be evaluated and special sector center.α values are as shown below, with x
Increase, α value is gradually intended to 1.
2.2.5 bird pest, external force destroy the section that takes place frequently
Mountain fire takes place frequently section as Liuzhou office, the administrative section of natural bridge office, and coefficient factor α obeys chi2 (4) chi square distribution,
Formula is
Wherein x represents the distance (unit km) of parameter geographic location to be evaluated and special sector center.α values are such as
Shown in figure below, with x increase, α value is gradually intended to 1.
2.3 parameters to be evaluated are in particular time and special sector simultaneously
When parameter to be evaluated is in particular time or special sector simultaneously, it is obtained respectively and corresponds to particular time and spy
The coefficient factor α of different section1And α2,
α=α1·α2
By α1And α2Product as actual coefficients factor-alpha, so as to calculate actual weight and actual deduction of points value.
In above-mentioned transmission facility state evaluating method, the step S3 includes：
Each sub-unit of transmission facility, tower position section, overall score value are calculated according to parameter score value successively, and combines and comments
The integrality of the two dimension Comprehensive Evaluation transmission facilities of valency period and evaluation section.
1) score value per each sub-unit of base tower position section is calculated
Each sub-unit total score per base tower position section is 100 points, and each sub-unit total penalties upper limit is 100 points.According to step
The evaluation method and standard of deducting point of each parameter in S2, the score value calculating process per each sub-unit of base tower position section are as follows：
The deduction of points value B of single parameter
B=K × Z
Wherein：K is the basic deduction of points value of quantity of state, and Z is the weighted value of quantity of state.Time is assessed according to virtual condition, commented
Estimate weight and deduction of points value corresponding to circuit selection, when in regular time periods, section, K and Z are netted according to existing state's net and south
State is assessed standard of deducting point in directive/guide and drawn；When in special evaluation period or special evaluation section, K and Z are according in step S2
The computational methods of actual weight and actual basic deduction of points value are drawn.
Per the deduction of points value Y of each sub-unit of base tower position section
Wherein：X is per the deduction of points quantity of state item number of each sub-unit of base tower position section, and B is the deduction of points value of each quantity of state.
Per the score value Q of each sub-unit of base tower position section
Q=100-Y
2) calculate per base tower position section must score value
The section evaluation of tower position is made up of the evaluation of tower position section sub-unit, and its evaluation procedure is as follows：
Per the weight score value R of each sub-unit of base tower position section
R=Q × P
Wherein：Q is the sub-unit score value being calculated, and P is the weight of the sub-unit.
Per the total score S of base tower position section
Wherein：R1~R8 is the weight score value per 8 sub-units in base tower position section.
3) the overall score value of circuit is calculated
The overall scores O of circuit sub-unit：
Wherein：N is the tower position segment number that the circuit has deduction of points, and Q is the circuit in the presence of corresponding point in the tower position section of deduction of points
The score value of part.
The overall score T of circuit：
Wherein：N is the tower position segment number that the circuit has deduction of points, and S is the score value for the tower position section that the circuit has deduction of points.
4) transmission facility integrality is evaluated
According to various dimensions interpretational criteria, according to evaluation period, circuit geography section, circuit entirety score value these three dimensions
The integrality of comprehensive descision circuit, evaluation principle are：
1. evaluating state score table according to circuit under normal circumstances provides circuit opinion rating；
According to the circuit entirety score T calculated, the integrality of circuit is obtained.The score value of the various evaluation states of circuit
Scope is as shown in table 3.
2. the circuit overall evaluation state score range table of table 3
| Score value | 100~95 | 85~95 (containing) | 75~85 (containing) | 75 (containing) are below |
| Evaluation state | Normal condition | Attention state | Abnormality | Severe conditions |
2. when the evaluation of circuit is to be in particular time or special sector, increases and abnormal quantity of state weight and button occur
Score value, evaluate tower position section reduces a grade if necessary.
In it is special evaluation the period or it is special evaluation section circuit overall assessment when be divided into following several situations：
A. when circuit total score T shows as normal or attention state and is not in the presence of in table 4 listed, then this circuit
The overall evaluation is normal condition；
B. when all sub-units are scored at normal or attention state, but it there is in table 4 one of listed, then this bar line
The road overall evaluation is abnormality.
C. when any circuit has 5 bases and above tower position section is scored at attention state, no matter circuit sub-unit score and line
Road must be divided into how many, and the circuit overall evaluation is attention state.
D. when any circuit has 3 bases and above tower position section is scored at abnormality, no matter circuit sub-unit score and line
Road must be divided into how many, and the circuit overall evaluation is abnormality.
E. when any circuit has 1 base and above tower position section is scored at severe conditions, no matter circuit sub-unit score and line
Road must be divided into how many, and the circuit overall evaluation is severe conditions.
Abnormal state list in the circuit particular time of table 4, section
Brief description of the drawings
Fig. 1 is transmission facility state evaluation model.
Fig. 2 is that icing takes place frequently the function distribution map of coefficient factor α under the period in the special evaluation period.
Fig. 3 is that thunder and lightning takes place frequently the function distribution map of coefficient factor α under the period in the special evaluation period.
Fig. 4 is that mountain fire takes place frequently the function distribution map of coefficient factor α under the period in the special evaluation period.
Fig. 5 is that typhoon takes place frequently the function distribution map of coefficient factor α under the period in the special evaluation period.
Fig. 6 is that bird pest and external force take place frequently the function distribution map of coefficient factor α under the period in the special evaluation period.
Fig. 7 is the location distribution figure of failure over the years in Frequent Troubles region.
Fig. 8 is that icing takes place frequently the function distribution map of coefficient factor α under section in special evaluation section.
Fig. 9 is that thunderbolt takes place frequently the function distribution map of coefficient factor α under section in special evaluation section.
Figure 10 is that mountain fire takes place frequently the function distribution map of coefficient factor α under section in special evaluation section.
Figure 11 is that typhoon takes place frequently the function distribution map of coefficient factor α under section in special evaluation section.
Figure 12 is the function distribution map that bird pest, external force destroy coefficient factor α under the section that takes place frequently in special evaluation section.
Figure 13 is that various dimensions evaluate entire block diagram.
Embodiment
The present invention is elaborated with reference to the accompanying drawings and examples.
According to the various dimensions evaluation method of the present invention, the 500kV transmission lines of electricity osmanthus naze line of south electric network subordinate is carried out
State evaluation, and the result of the various dimensions state evaluation is verified with reference to practical operation situation.The portion of this section of transmission line of electricity
Divide and make an inspection tour record as shown in table 5：
The patrolling transmission line of table 5 records
The state evaluation parameter system of this section of transmission line of electricity is as shown in table 1, its state Comment gathers be V=it is good, typically,
Pay attention to, serious, it is as follows to the state evaluation process of the transmission line of electricity according to the method for evaluating state of the present invention：
1. calculate the score value of sub-unit
According to the parameter standard of deducting point for making an inspection tour record and component leads, it is assumed that the score value that should be detained under the normally evaluation period
For 4 points, 5 points and 5 points.
(1) taken place frequently the period due to being in order at icing December, therefore the weight of the parameter relevant with icing and deduction of points value should
Coefficient factor is multiplied by the basis of regular time periods.Icing takes place frequently coefficient factor α corresponding to the period1N (12,2) distribution is obeyed,
Formula is：
Wherein, x is month (January next year, x=13).α1Value is as shown below, can be according to the period of state evaluation
Coefficient factor α value is drawn, so as to calculate the weight of quantity of state and deduction of points value under particular time.
Because the state evaluation time is December, therefore coefficient factor α can be obtained from figure1Value be 1.2.
(2) #230~#231 towers position section of osmanthus naze line is in icing and taken place frequently section, therefore the parameter relevant with icing
Weight and deduction of points value should be multiplied by coefficient factor on the basis of regular time periods.Icing takes place frequently coefficient factor α corresponding to section2Clothes
Distribution from N (0,1.63), formula are：
Wherein x represents the distance (unit km) of parameter geographic location to be evaluated and special sector center.α2Take
Value can read coefficient factors α directly from figure2Distribution show, coefficient factor α more remote from special sector center2Value get over
Close to 1, when being more than 30km from special sector centre distance, α2Value all be 1.
Because #230~#231 towers position section of osmanthus naze line away from icing section center is 23km, therefore from figure directly
Read α2Value be 1.05.
(3) when there is the parameter deteriorated while in special evaluation period or special evaluation section, access value is larger
Coefficient factor is substituted into the calculation formula of actual weight, therefore actual coefficients factor-alpha=1.2.
The actual weight for three parameters for occurring deteriorating and actual basic deduction of points value are calculated, it is as shown in table 6 below：
The parameter deduction of points value of table 6
The total penalties value that component leads are calculated is 80.6, therefore wire is scored at 19.4.
Recorded according to making an inspection tour, deduction of points phenomenon is not present in other parts, therefore other parts are scored at 100 points.
2. calculate the score value of tower position section
The weight and score of each sub-unit, weighting obtain the base tower position section must score value, it is as shown in table 7 below：
Each sub-unit score value of table 7
| Sequence | Sub-unit | Sub-unit weight (P) | Sub-unit score | Sub-unit weights |
| 1 | Basis | 0.1 | 100 | 10 |
| 2 | Shaft tower | 0.1 | 100 | 10 |
| 3 | Lead, ground wire | 0.2 | 19.4 | 3.88 |
| 4 | Insulator | 0.15 | 100 | 15 |
| 5 | Gold utensil | 0.15 | 100 | 15 |
| 6 | Earthing or grounding means | 0.1 | 100 | 10 |
| 7 | Affiliated facility | 0.1 | 100 | 10 |
| 8 | Channel environment | 0.1 | 100 | 10 |
Therefore osmanthus naze line #230~#231 towers position section is scored at S=84.
3. calculate the overall score value of circuit
There is similar tour phenomenon in naze line #228~#231 this 4 adjacent base tower position section in osmanthus, similarly obtain this 4 base
The score value of tower position section is 84 points.
According to the calculation formula of circuit entirety score, T=84 must be divided into by obtaining circuit.
4. comprehensive descision transmission facility integrality
First, combined circuit total score 84 is divided and condition grading table, it can be determined that circuit is in "abnormal" state.
Secondly as osmanthus naze line is in special evaluation period (icing takes place frequently the period), and the wire of degradation phenomena be present
In special evaluation section (icing take place frequently section), therefore combined circuit score, time, these three dimensions of space are answered to set transmission of electricity
Standby entirety is evaluated.With the evaluation principle in step S3 " when any circuit has 3 bases and above tower position section to be scored at abnormality
When, no matter circuit sub-unit score and circuit must be divided into how many, and the circuit overall evaluation is abnormality." corresponding, judge line
Road is in "abnormal" state.
Finally draw a conclusion, the transmission line status evaluation result is "abnormal" state, has represented the quantity of state of circuit
Slight degradation, running status integral working is not good enough, should keep a close eye on the development of its succeeding state, arrange maintenance as early as possible.
The actual conditions of this section of transmission line of electricity are：The heavy snow weather in winter was at that time, and ice covering thickness has been on transmission line of electricity
Close to design load, because the sag of the influence wire of icing has deviateed normal value, there are abnormal vibrations in wire；Maintenance record is shown
The maintenance of wire strand breakage had been carried out about splicing fitting and repaired before the section lead.In summary actual conditions, can sentence
This section of transmission line of electricity that break has had part important state close or only slight beyond standard value, should monitor operation, and need as early as possible
Arrange maintenance.This is consistent with the conclusion that appraisal procedure in the present invention is drawn.
5. contrasted with the evaluation result of other methods
If only considering the deduction of points value of circuit under regular time periods, without overall merit period, section the two dimensions, then obtain
This part of wire is scored at：Q=100- (4 × 4+4 × 5+4 × 5)=44
Tower position section is scored at：S=88.8
Circuit must be divided into：S=88.8
It is concluded that according to circuit total score：Transmission facility is in " attention " state, only need to pay close attention to its fortune in real time
Market condition, according to plan periodic maintenance.Obviously, the conclusion is not inconsistent with actual conditions.Therefore, by the contrast of two methods, use
Multi dimensional analysis method is than only considering that circuit score can more objectively respond some parameter drift-out normal values of transmission facility to monolithic
The influence that state is brought, its assessment result can be closer to actual motion states.
Claims (3)
1. a kind of appraisal procedure of various dimensions transmission facility state, this method comprise the following steps：
Step S1, establish the state evaluation model with multi-layer framework, asserted state evaluating system；
Step S2, defines the special evaluation period and special track section, combining assessment period and the two dimensions of track section are true
Each parameter actual weight and actual deduction of points value are found；
Step S3, each sub-unit of transmission facility, tower position section, line are calculated according to the actual weight of parameter and actual deduction of points value successively
The overall score value in road, and the integrality of the two dimension Comprehensive Evaluation transmission facilities of combining assessment period and evaluation section；
Characterized in that, special evaluation period and special track section are defined, when the evaluation of circuit is to be in special evaluation
When section or special track section, increase and abnormal quantity of state weight and deduction of points value occur, the step S2 is specifically：
1. by the distribution of circuit failure over the years, external force, environment be distributed statistical analysis, when establishing the special evaluation of transmission facility
Section and special track section；
The described special evaluation period refers to that thunderbolt take place frequently period, the icing of period, mountain fire that take place frequently takes place frequently period, typhoon when taking place frequently
Section, bird pest take place frequently the period, external force destroy take place frequently the period；
Described special track section refers to that thunderbolt section, mountain fire take place frequently section, the typhoon of section, icing that take place frequently that take place frequently takes place frequently area
Take place frequently section, external force of section, bird pest is destroyed and taken place frequently section；
2. determined according to country and professional standard under normal evaluation period and normal evaluation section in state evaluation parameter system
Each parameter evaluation criterion, the coefficient factor of special evaluation period and the coefficient factor of special track section are set；
3. calculate the special quantity of state weight evaluated under the period and quantity of state deduction of points value, formula substantially is as follows：
λ2=α1*λ1
In formula：λ1For quantity of state weight under the normal evaluation period, λ2For quantity of state weight under the special evaluation period；
K2=α1*K1
In formula：K1Quantity of state deduction of points value substantially, K under regular time periods2For quantity of state deduction of points value substantially under the special evaluation period；α1For
The coefficient factor of special evaluation period, its distribution function drawn by the statistics of line fault over the years, defect monthly frequency,
The different special evaluation periods correspond to different distribution functions；
4. calculate quantity of state weight under special track section and quantity of state deduction of points value, formula substantially is as follows：
λ3=α2*λ1
In formula：λ3For quantity of state weight under special track section；
K3=α2*K1
In formula：K3For the deduction of points value substantially of quantity of state under special track section；α2For the coefficient factor of special track section, it is distributed
Function is shown that different special track sections correspond to different distribution letters by the statistical analysis of failure dot density in Frequent Troubles region
Number；
5. the quantity of state weight and quantity of state deduction of points value substantially simultaneously under special evaluation period and special track section are calculated, it is public
Formula is as follows：
λ=α * λ1
In formula：λ is quantity of state weight under special evaluation period and special track section；
K=α * K1
In formula：K is quantity of state deduction of points value substantially under special evaluation period and special track section；Actual coefficients factor-alpha=α1*α2。
2. the appraisal procedure of transmission facility state according to claim 1, it is characterised in that described in the step S1
State evaluation model be by transmission facility part, overall three analysis levels of tower position section and circuit, and appraisal of equipment period and
The dimensional information of device space position two is formed；
Described state evaluation parameter system is made up of component layer and parameter layer, component layer be divided into basis, shaft tower, wire, absolutely
8 edge, gold utensil, earthing or grounding means, affiliated facility, channel environment parts, parameter layer are parameter corresponding to each part, altogether 54
It is individual.
3. the appraisal procedure of transmission facility state according to claim 1, it is characterised in that the step S3 includes：
Theoretical with multi dimensional analysis, combined circuit entirety score, evaluation period, these three dimension Comprehensive Evaluations of track section are defeated
The integrality of electric equipment；Under normal circumstances according to abnormality in the overall score value of circuit and circuit particular time, section
List provides circuit integrality grade, when circuit is in special evaluation period or special track section, considers to go out in circuit
The quantity of state that now deteriorates and the more base tower position sections for considering adjacent appearance degradation phenomena, and circuit integrality grade is reduced,
It is in particular in：
A. when the overall score value of circuit shows as normal or attention state and is not in the presence of in table 4 listed, then this bar line
The road overall evaluation is normal condition；
B. when all sub-units are scored at normal or attention state, but it is in the presence of in table 4 one of listed, then this circuit is whole
Body is evaluated as abnormality；
C. when any circuit has 5 bases and above tower position section is scored at attention state, no matter circuit sub-unit score and circuit it is total
It is scored at how many, the circuit overall evaluation is attention state；
D. when any circuit has 3 bases and above tower position section is scored at abnormality, no matter circuit sub-unit score and circuit it is total
It is scored at how many, the circuit overall evaluation is abnormality；
E. when any circuit has 1 base and above tower position section is scored at severe conditions, no matter circuit sub-unit score and circuit it is total
It is scored at how many, the circuit overall evaluation is severe conditions；
Abnormal state list in the circuit particular time of table 4, section
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| CN105678440A (en) * | 2015-12-03 | 2016-06-15 | 国电南瑞科技股份有限公司 | Calculation method of power transmission and transformation equipment failure rate based on multi-source information fusion |
| CN105446326A (en) * | 2016-01-04 | 2016-03-30 | 国网浙江奉化市供电公司 | Power supply monitoring system and method |
| CN106651140B (en) * | 2016-11-16 | 2020-10-30 | 海南电力技术研究院 | Module difference evaluation method and device for power transmission line risk in typhoon area |
| CN106846700B (en) * | 2017-03-31 | 2020-03-13 | 国网湖南省电力公司 | Method and system for monitoring forest fire of power transmission line |
| CN108154263B (en) * | 2017-12-21 | 2021-12-28 | 上海网波软件股份有限公司 | Monitoring and predicting method for natural water resource |
| CN110009246B (en) * | 2019-04-12 | 2023-04-07 | 国网福建省电力有限公司莆田供电公司 | Power transmission line running state evaluation method based on big data portrait technology |
| CN111339477A (en) * | 2020-02-27 | 2020-06-26 | 国网山西省电力公司晋城供电公司 | Method and device for evaluating dangerousness of transmission line in goaf |
| CN111598490B (en) * | 2020-07-11 | 2024-04-26 | 西南石油大学 | Photoelectric composite submarine cable state evaluation method and system based on multi-state quantity fusion |
| CN112069461A (en) * | 2020-07-31 | 2020-12-11 | 国网吉林省电力有限公司电力科学研究院 | Comprehensive evaluation method for material sampling inspection result |
| CN112580887B (en) * | 2020-12-25 | 2023-12-01 | 百果园技术(新加坡)有限公司 | Weight determination method, device, equipment and storage medium for multi-target fusion evaluation |
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Application publication date: 20150624 Assignee: Jiangsu Tiannan Electric Power Co.,Ltd. Assignor: SHANGHAI JIAO TONG University Contract record no.: X2023980033527 Denomination of invention: A multi-dimensional evaluation method for transmission equipment status Granted publication date: 20180309 License type: Common License Record date: 20230313 |