CN103279893A - Common disaster zoning atlas drawing method for overhead power transmission line - Google Patents

Common disaster zoning atlas drawing method for overhead power transmission line Download PDF

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CN103279893A
CN103279893A CN2013101370317A CN201310137031A CN103279893A CN 103279893 A CN103279893 A CN 103279893A CN 2013101370317 A CN2013101370317 A CN 2013101370317A CN 201310137031 A CN201310137031 A CN 201310137031A CN 103279893 A CN103279893 A CN 103279893A
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grey
zoning
transmission line
induced vibration
grid
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CN103279893B (en
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芮晓明
姬昆鹏
李林
徐克举
杨磊
夏莹沛
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North China Electric Power University
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North China Electric Power University
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Abstract

The invention discloses a common disaster zoning atlas drawing method for an overhead power transmission line in the technical field of disaster zoning for overhead power transmission lines. The method comprises the following steps of acquiring a base map of a disaster zoning map of a power grid; selecting a voltage grade, and zoning zones where galloping accidents or wind-induced vibration accidents happen to the overhead power transmission line for five times or more within 10 years as severe galloping areas or major wind-induced vibration zones; zoning zones where the average ice coating thickness of the line is more than 20mm as ice-shedding zones and overload zones; dividing zones which are not divided into the severe galloping zones, the major wind-induced vibration zones, the ice-shedding zones and the overload zones into a plurality of grids; calculating a gray clustering result of each grid by adopting a gray clustering method; and drawing a disaster zoning atlas of the voltage grade according to the gray clustering result of each grid to finish drawing the disaster zoning atlas of each voltage grade. According to the method, common accident types of the power grid are taken into comprehensive account, and strong support can be provided for the operation and the maintenance of the conventional power transmission line and the planning and the design of a new line.

Description

The common disaster zoning of a kind of overhead transmission line collection of illustrative plates method for drafting
Technical field
The invention belongs to partitioning technology field, overhead transmission line disaster zone, relate in particular to the common disaster zoning of a kind of overhead transmission line collection of illustrative plates method for drafting.
Background technology
Overhead transmission line galloping be the low frequency that produces of ice coating wire (0.1~3Hz), the autovibration of large amplitude (diameter of wire 5~300 times).Rain wind induced vibration is the high frequency small amplitude motion that transmission line of electricity takes place in rainfall.Deicing jumps is because the icing on the transmission line of electricity comes off from conductive line surfaces under the effect of wind and temperature rising etc., causes vibration and the jump of lead.Overload is because the conductive line surfaces ice covering thickness has surpassed the design ice covering thickness, and the harm that causes to transmission line of electricity.It all is more serious with the increase of ice covering thickness deicing jump and overload disaster.
Wave and the rain wind induced vibration of transmission line of electricity is by meteorology, landform and line construction and the coefficient result of parameter three aspect factor.Deicing jump and overload mainly causes owing to the circuit icing.
Transmission line of electricity is being waved, when rain wind induced vibration and deicing jump to take place, all will born huge dynamic force destruction; What bear when the icing overload mainly is that static force is destroyed.Four kinds of form disasters mainly are that (insulator, gold utensil destroy physical disturbance to the destruction of transmission line of electricity, disconnected strand of lead, even the broken string of falling the tower etc.) and electric destruction (alternate flashover and lead to bottom line short circuit etc.), will cause heavy economic losses and social influence when serious.
At present, electric power relevant departments and scientific research institutions are to the ice formation distribution plan of transmission line of electricity with wave zoning map and carried out corresponding research.Distribution plan rendering technique comparative maturity in ice formation in the existing documents and materials.Wave zoning methods and mainly be divided into three kinds: Ma Jianguo etc. are foundation with the accident of the waving frequency of existing line, wave the zone and divide; Shao Demin etc. are merely the zoning foundation with the meteorological condition, have carried out waving zoning; People such as Tu Ming, the Y-factor method Y of waving based on statistical data has been proposed, comprehensive utilization landform and meteorologic parameter are waved zoning provides quantization method, but because of needs a large amount of landform and meteorological statistics, limited to still lacking regional promotional value meteorological and the landform record.
In the prior art, Shang Weijian has open source literature that the rain wind induced vibration zoning is studied, and does not also see the angle that has from accident and disaster kind, and comprehensive common accident pattern is carried out the correlative study based on the zone division of disaster classification.
Therefore, there are the following problems in the present transmission line of electricity zoning:
(1) Shang Weijian has open source literature that the rain wind induced vibration zoning is studied;
(2) existing research is waved hierarchical region with circuit and is divided and separate consideration with the icing hierarchical region, disclosed achievement in research is not arranged as yet from the angle of disaster type, (icing is waved to the common disaster that influences transmission line of electricity physical construction safety, no dancing on ices is moving, deice jump, overload icing and wind and rain induced vibration etc.) take all factors into consideration, provide the common disaster zoning map of transmission line of electricity;
(3) existing zoning methods is left following problem: A. and is only considered that wire icing waves when waving the hierarchical region division, or with the prerequisite condition of icing as conductor galloping, ignored waving under the no ice condition condition, do not wave and be recorded in various kinds of document or mention and in fact there is icing, present zoning methods lacks waves the compartment analysis of situation to this part; B. can only use the area that detailed circuit logout is arranged based on the method for waving accident frequency, the circuit that can't lack accident record, the circuit Buddhist monk in the design planning do not build the area of transmission line of electricity and analyze; C. wave zoning according to meteorologic factor merely and be not enough to consider to wave influence factor comprehensively, its zoning practical value as a result is limited; D. when foundation grey cluster algorithm is waved zoning, fail the weighted value of cluster index is relied on the experience assignment, its reliability remains to be discussed; E. existing document is failed when waving zoning terrain information and line construction parameter and the whole consideration of meteorologic factor, perhaps lack the quantitative test of the role when circuit is waved to terrain information and line construction parameter, influenced the validity of waving the zoning result.
(4) when making icing ranking score Butut, lack the further analysis to the issuable major casualty type in different ice formations;
(5) circuit of different electric pressures suffers the possibility difference with a kind of disaster under same meteorology and topographic condition, according to existing method, to containing the zone of multiple voltage grade simultaneously, can't give zoning classification accurately.
Summary of the invention
The objective of the invention is to, deficiency at the prior art existence, the common disaster zoning of a kind of overhead transmission line collection of illustrative plates method for drafting is provided, the common accident pattern of electrical network is taken all factors into consideration, provide powerful support for for the planning and design of the operation maintenance of existing transmission line of electricity and new line provide.
To achieve these goals, the technical scheme of the present invention's proposition is that the common disaster zoning of a kind of overhead transmission line collection of illustrative plates method for drafting is characterized in that described method comprises:
Step 1: for the area that has overhead transmission line, collect common disaster and the accident of the overhead transmission line in the described area;
For the area of not setting up overhead transmission line as yet, lay overhead transmission line according to the least favorable condition, namely lay the multiple division electricity transmission line that becomes 90 degree angles with long-term wind direction in this area;
Step 2: obtaining the electrical network disaster zoning map base map in described area, specifically is administrative map, topomap, each electric pressure transmission line of electricity corridor figure and the stack of icing grade zoning map with described area;
Step 3: choose electric pressure, with take place 5 times in the overhead transmission line in the described area 10 years and more than wave the zone of accident or rain wind induced vibration accident, divide heavily dance district or rain wind induced vibration emphasis district into;
With the zone more than the circuit icing average thickness 20mm in the described icing grade zoning map, divide into and deice skip zone and overload region;
Step 4: in electrical network disaster zoning map, unallocated heavy dance district, rain wind induced vibration key area, the zone that deices skip zone and overload region are divided into some grids;
Step 5: adopt grey clustering method to calculate the grey cluster result of each grid;
Step 6: the disaster zoning collection of illustrative plates of drawing this electric pressure according to the grey cluster result of each grid;
Step 7: judge whether that all electric pressures all chose, if all electric pressures were all chosen, then finish; Otherwise, choose new electric pressure, return step 3.
The grey cluster result that described employing grey clustering method calculates each grid specifically comprises:
Step 201: choose and wave the meteorologic parameter relevant with rain wind induced vibration, terrain parameter and transmission line structure parameter as the grey cluster index;
Step 202: the weight η that determines each grey cluster index j, 1≤j≤m, m are grey cluster index number;
Step 203: determine the grey cluster index with respect to waving other white function of level
Figure BDA00003072536400041
J=1,2 ..., m; P=1,2 ..., l, wave grade other number of l for setting;
Determine that the grey cluster index is with respect to other albefaction letter of rain wind induced vibration level
Figure BDA00003072536400042
J=1,2 ..., m, q=1,2 ..., k, k other number of rain wind induced vibration level for setting;
Step 204: calculate each grid respectively and wave rank and each other grey of rain wind induced vibration level with respect to each and weigh cluster coefficients surely;
Calculating each grid waves other grey of level with respect to each and weighs cluster coefficients surely and adopt formula
Figure BDA00003072536400043
Wherein, i=1,2 ..., n, the meshes number of n for dividing, x IjBe that i grid is to the observed reading of j grey cluster index, η jIt is the weight of j grey cluster index; M is the number of grey cluster index;
Figure BDA00003072536400044
For the grey cluster index with respect to wave the level other white function; P=1,2 ..., l, wave grade other number of l for setting;
Calculate each grid and weigh cluster coefficients employing formula surely with respect to each other grey of rain wind induced vibration level
Figure BDA00003072536400045
Wherein, i=1,2 ..., n, the meshes number of n for dividing, x IjBe that i grid is to the observed reading of j grey cluster index, η jIt is the weight of j grey cluster index; M is the number of grey cluster index;
Figure BDA00003072536400051
For the grey cluster index with respect to wave the level other white function; Q=1,2 ..., k, wave grade other number of k for setting;
Step 205: determine each grid respectively with respect to the grey cluster result who waves with rain wind induced vibration;
Determine each grid and adopt formula with respect to the grey cluster result who waves
Figure BDA00003072536400052
I=1,2 ..., n, the meshes number of n for dividing, wave grade other number of l for setting;
Determine that each grid adopts formula with respect to the grey cluster result of rain wind induced vibration
Figure BDA00003072536400053
I=1,2 ..., n, the meshes number of n for dividing, k other number of rain wind induced vibration level for setting.
The described weight η that determines each grey cluster index jSpecifically comprise:
Step 301: the size of cluster result influence power is set up grey cluster index fuzzy preference relation matrix B=(b according to each grey cluster index Ij) M * m, b IjBe grey cluster index a iAnd a jThe precedence relationship coefficient, and have b ij = 1 a i > a j 0.5 a i = a j 0 a i < a j ; I=1,2 ..., m, j=1,2 ..., m, m are grey cluster index number;
Step 302: calculate fuzzy consensus matrix R by grey cluster index fuzzy preference relation matrix B, its computing formula is: R = ( r ij ) m &times; m = &lsqb; ( &Sigma; k = 1 m b ik - &Sigma; k = 1 m b jk ) / 2 m + 0.5 &rsqb; m &times; m ;
Step 303: according to formula
Figure BDA00003072536400056
Calculate the weight of grey cluster index; Wherein &eta; &OverBar; j = ( &Pi; i = 1 m r ij ) 1 / m .
After the described step 5, also comprise mima type microrelief and microclimate correction, namely to the transmission line of electricity section through mima type microrelief and microclimate, further analyze, utilize landform and the meteorologic parameter of this section, wave again and the rain wind induced vibration grade classification, the aforementioned zones check off is really carried out refinement and correction.
(icing is waved to the common disaster type that influences transmission line of electricity physical construction safety in the present invention, no dancing on ices is moving, deice jump, overload icing and wind and rain induced vibration etc.) take all factors into consideration, adopting grey to weigh clustering algorithm surely waves and the rain wind induced vibration zoning, avoid the dependence experience directly to be the subjectivity of each key element assignment, provide detailed guidance to the operation maintenance of existing transmission line of electricity and the planning and design of new line.
Description of drawings
Fig. 1 is the common disaster zoning of overhead transmission line collection of illustrative plates method for drafting process flow diagram;
The Yunnan electrical network electric pressure transmission line of electricity disaster zoning result schematic diagram that Fig. 2 is to use the present invention to obtain.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment is elaborated.Should be emphasized that following explanation only is exemplary, rather than in order to limit the scope of the invention and to use.
Fig. 1 is the common disaster zoning of overhead transmission line collection of illustrative plates method for drafting process flow diagram.As shown in Figure 1, method provided by the invention comprises:
Step 1: for the area that has overhead transmission line, collect common disaster and the accident of the overhead transmission line in the described area.
For the area of not setting up overhead transmission line as yet, lay overhead transmission line according to the least favorable condition, namely lay the multiple division electricity transmission line that becomes 90 degree angles with long-term wind direction in this area.
Step 2: obtaining the electrical network disaster zoning map base map in described area, specifically is administrative map, topomap, each electric pressure transmission line of electricity corridor figure and the stack of icing grade zoning map with described area.
Step: 3: choose electric pressure, with take place 5 times in the overhead transmission line in the described area 10 years and more than wave the zone of accident or rain wind induced vibration accident, divide heavily dance district or rain wind induced vibration emphasis district into.
With the zone more than the circuit icing average thickness 20mm in the described icing grade zoning map, divide into and deice skip zone and overload region.
Step 4: in electrical network disaster zoning map, unallocated heavy dance district, rain wind induced vibration key area, the zone that deices skip zone and overload region are divided into some grids.
Step 5: adopt grey clustering method to calculate the grey cluster result of each grid.Specifically comprise:
Step 201: choose and wave the meteorologic parameter relevant with rain wind induced vibration, terrain parameter and transmission line structure parameter as the grey cluster index.
The grey cluster index is selected, be in each grid, from the meteorologic factor, orographic factor and the transmission line structure parameter three class factors that influence transmission line galloping, to choose wind speed, wind direction and line alignment angle, wire icing thickness, terrain type (refers to that institute's survey region belongs to open plain, the bealock landform, mountain region or other landform etc.), wire form (S.C. or split conductor, lead horizontally still is homeotropic alignment), key elements such as wire tension are as the grey cluster index.
It should be noted that, this method only with icing only as one of cluster index, not with it as the necessary condition of waving generation, thereby this method can have only strong wind and not have the situation of waving of icing to include the limit of consideration of waving zoning in what exist in the reality, remedied the deficiency of previous methods.
From the meteorologic factor, orographic factor and the transmission line structure parameter three class factors that influence rain wind induced vibration, choose wind speed, wind direction and line alignment angle, rainfall amount, terrain type (refers to that institute's survey region belongs to open plain, the bealock landform, mountain region or other landform etc.), wire form (S.C. or split conductor, lead horizontally still are homeotropic alignment), key elements such as wire tension are as the grey cluster index.
It should be noted that for the cluster index choice, other any do not deviate from change, the modification done under spiritual essence of the present invention and the principle, substitutes, combination, simplify, all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Step 202: the weight η that determines each grey cluster index j, 1≤j≤m, m are grey cluster index number.Specifically comprise:
Steps A: the size of cluster result influence power is set up grey cluster index fuzzy preference relation matrix B=(b according to each grey cluster index Ij) M * m, b IjBe grey cluster index a iAnd a jThe precedence relationship coefficient, and have b ij = 1 a i > a j 0.5 a i = a j 0 a i < a j ; I=1,2 ..., m, j=1,2 ..., m, m are grey cluster index number.
Step B: calculate fuzzy consensus matrix R by grey cluster index fuzzy preference relation matrix B, its computing formula is:
R = ( r ij ) m &times; m = &lsqb; ( &Sigma; k = 1 m b ik - &Sigma; k = 1 m b jk ) / 2 m + 0.5 &rsqb; m &times; m - - - ( 1 )
Step C: according to formula
&eta; i = &eta; &OverBar; j / &Sigma; k = 1 m &eta; &OverBar; k - - - ( 2 )
Calculate the weight of grey cluster index; Wherein &eta; &OverBar; j = ( &Pi; i = 1 m r ij ) 1 / m .
Step 203: determine the grey cluster index with respect to waving other white function of level
Figure BDA00003072536400085
J=1,2 ..., m; P=1,2 ..., l, wave grade other number of l for setting.
Determine that the grey cluster index is with respect to other albefaction letter of rain wind induced vibration level
Figure BDA00003072536400086
J=1,2 ..., m, q=1,2 ..., k, k other number of rain wind induced vibration level for setting.
Can be according to domestic and international statistical data and theoretical analysis result, determine to wave rank (light dance district, easily dance district and heavily dance district) and the rain wind induced vibration rank (rain wind induced vibration is sent out the area less, the rain wind induced vibration prone district, the rain wind induced vibration zone that takes place frequently) grade scale, and then determine to wave albefaction weight function and rain wind induced vibration albefaction weight function.
Step 204: calculate each grid respectively and wave rank and each other grey of rain wind induced vibration level with respect to each and weigh cluster coefficients surely.
Calculating each grid waves other grey of level with respect to each and weighs cluster coefficients surely and adopt formula
&sigma; i p = &Sigma; j = 1 m f j p ( x ij ) &eta; j - - - ( 3 )
Wherein, i=1,2 ..., n, the meshes number of n for dividing, x IjBe that i grid is to the observed reading of j grey cluster index, η jIt is the weight of j grey cluster index; M is the number of grey cluster index;
Figure BDA00003072536400092
For the grey cluster index with respect to wave the level other white function; P=1,2 ..., l, wave grade other number of l for setting.
Calculate each grid and weigh cluster coefficients employing formula surely with respect to each other grey of rain wind induced vibration level
&tau; i q = &Sigma; j = 1 m f j q ( x ij ) &eta; j - - - ( 4 )
Wherein, i=1,2 ..., n, the meshes number of n for dividing, x IjBe that i grid is to the observed reading of j grey cluster index, η jIt is the weight of j grey cluster index; M is the number of grey cluster index;
Figure BDA00003072536400094
For the grey cluster index with respect to wave the level other white function; Q=1,2 ..., k, wave grade other number of k for setting.
I grid is to the observed reading x of j grey cluster index Ij, can directly obtain from grid company.Because grid company at the beginning of carrying out the planning and design of transmission line of electricity corridor, will be bought the weather data of circuit periphery from the meteorological Room of provincial, and municipal level (office), these data are call parameters of line design.
Step 205: determine each grid respectively with respect to the grey cluster result who waves with rain wind induced vibration.
Determine each grid and adopt formula with respect to the grey cluster result who waves
&sigma; i p * = max 1 &le; p &le; l { &sigma; i p } - - - ( 5 )
Wherein, i=1,2 ..., n, the meshes number of n for dividing, wave grade other number of l for setting.
Determine that each grid adopts formula with respect to the grey cluster result of rain wind induced vibration
&tau; i q * = max 1 &le; q &le; k { &tau; i q } - - - ( 6 )
Wherein, i=1,2 ..., n, the meshes number of n for dividing, k other number of rain wind induced vibration level for setting.
Grid (is gently waved the district with respect to the disaster rank of waving that the grey cluster result who waves is this grid correspondence, easily dance district and heavily dance district), grid is the rain wind induced vibration disaster rank of this grid correspondence with respect to the grey cluster result of rain wind induced vibration, and (rain wind induced vibration is sent out the area less, rain wind induced vibration prone district, the rain wind induced vibration zone that takes place frequently).
Afterwards, can also carry out mima type microrelief and microclimate correction, namely to the transmission line of electricity section through mima type microrelief and microclimate, further analyze, utilize landform and the meteorologic parameter of this section, wave again and the rain wind induced vibration grade classification, the aforementioned zones check off is really carried out refinement and correction.
Step 6: the disaster zoning collection of illustrative plates of drawing this electric pressure according to the grey cluster result of each grid.Because waving with the rain wind induced vibration rank of each grid determined, therefore can use identical color to indicate with having identical wave or other grid of rain wind induced vibration level couples together, thus the receipt of realization disaster zoning collection of illustrative plates.
Need to prove, the final collection of illustrative plates that obtains of the present invention is the collection of illustrative plates of a multilayer stack in fact, therefore grid can be existing with respect to the grey cluster result who waves (not only belong to wave the district) but also grey cluster result's (belonging to the rain wind induced vibration district) with respect to rain wind induced vibration is arranged, the situation in the reality also is like this.
Step 7: judge whether that all electric pressures all chose, if all electric pressures were all chosen, then finish; Otherwise, choose new electric pressure, return step 3.
After the disaster zoning collection of illustrative plates of each electric pressure completed, finally obtain this area at the out-of-date disaster zoning collection of illustrative plates of each electric pressure link tester.
Compared with prior art, (icing is waved to the common disaster type that influences transmission line of electricity physical construction safety in the present invention, no dancing on ices is moving, deice jump, overload icing and wind and rain induced vibration etc.) take all factors into consideration, propose the concept of rain wind induced vibration zoning first, and the no icing of will be in the past not considering in the zoning methods is waved the zoning scope of waving of including in.Carrying out the zone when dividing, except meteorologic factor is carried out the quantitative test, role when circuit is waved with rain wind induced vibration has also all been carried out quantitative test to orographic factor and line construction parameter; Adopting grey to weigh clustering algorithm surely waves and the rain wind induced vibration zoning, influence from three classes respectively and choose relevant parameter the key element as the cluster index, and adopt Fuzzy consistent matrix to determine the weight of each index, avoided the dependence experience directly to be the subjectivity of each key element assignment.At last, on the basis of The above results, be classification foundation with the transmission line of electricity electric pressure, the zoning map when drawing areal respectively and comprising different electric pressure circuit, its editor is bound into book form constitutes the common disaster zoning of this area's electrical network collection of illustrative plates then.Simultaneously, the method that this invention is adopted, not only can carry out zoning to existing transmission line of electricity area, also can carry out corresponding zoning to the area of not setting up transmission line of electricity as yet, thereby provide detailed guidance to the operation maintenance of existing transmission line of electricity and the planning and design of new line, under the prerequisite that guarantees line security, obtain good economic benefit.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.

Claims (4)

1. the common disaster zoning of overhead transmission line collection of illustrative plates method for drafting is characterized in that described method comprises:
Step 1: for the area that has overhead transmission line, collect common disaster and the accident of the overhead transmission line in the described area;
For the area of not setting up overhead transmission line as yet, lay overhead transmission line according to the least favorable condition, namely lay the multiple division electricity transmission line that becomes 90 degree angles with long-term wind direction in this area;
Step 2: obtaining the electrical network disaster zoning map base map in described area, specifically is administrative map, topomap, each electric pressure transmission line of electricity corridor figure and the stack of icing grade zoning map with described area;
Step 3: choose electric pressure, with take place 5 times in the overhead transmission line in the described area 10 years and more than wave the zone of accident or rain wind induced vibration accident, divide heavily dance district or rain wind induced vibration emphasis district into;
With the zone more than the circuit icing average thickness 20mm in the described icing grade zoning map, divide into and deice skip zone and overload region;
Step 4: in electrical network disaster zoning map, unallocated heavy dance district, rain wind induced vibration key area, the zone that deices skip zone and overload region are divided into some grids;
Step 5: adopt grey clustering method to calculate the grey cluster result of each grid;
Step 6: the disaster zoning collection of illustrative plates of drawing this electric pressure according to the grey cluster result of each grid;
Step 7: judge whether that all electric pressures all chose, if all electric pressures were all chosen, then finish; Otherwise, choose new electric pressure, return step 3.
2. method according to claim 1 is characterized in that the grey cluster result that described employing grey clustering method calculates each grid specifically comprises:
Step 201: choose and wave the meteorologic parameter relevant with rain wind induced vibration, terrain parameter and transmission line structure parameter as the grey cluster index;
Step 202: the weight η that determines each grey cluster index j, 1≤j≤m, m are grey cluster index number;
Step 203: determine the grey cluster index with respect to waving other white function of level
Figure FDA00003072536300021
J=1,2 ..., m; P=1,2 ..., l, wave grade other number of l for setting;
Determine that the grey cluster index is with respect to other albefaction letter of rain wind induced vibration level
Figure FDA00003072536300022
J=1,2 ..., m, q=1,2 ..., k, k other number of rain wind induced vibration level for setting;
Step 204: calculate each grid respectively and wave rank and each other grey of rain wind induced vibration level with respect to each and weigh cluster coefficients surely;
Calculating each grid waves other grey of level with respect to each and weighs cluster coefficients surely and adopt formula
Figure FDA00003072536300023
Wherein, i=1,2 ..., n, the meshes number of n for dividing, x IjBe that i grid is to the observed reading of j grey cluster index, η jIt is the weight of j grey cluster index; M is the number of grey cluster index;
Figure FDA00003072536300024
For the grey cluster index with respect to wave the level other white function; P=1,2 ..., l, wave grade other number of l for setting;
Calculate each grid and weigh cluster coefficients employing formula surely with respect to each other grey of rain wind induced vibration level
Figure FDA00003072536300025
Wherein, i=1,2 ..., n, the meshes number of n for dividing, x IjBe that i grid is to the observed reading of j grey cluster index, η jIt is the weight of j grey cluster index; M is the number of grey cluster index;
Figure FDA00003072536300026
For the grey cluster index with respect to wave the level other white function; Q=1,2 ..., k, wave grade other number of k for setting;
Step 205: determine each grid respectively with respect to the grey cluster result who waves with rain wind induced vibration;
Determine each grid and adopt formula with respect to the grey cluster result who waves I=1,2 ..., n, the meshes number of n for dividing, wave grade other number of l for setting;
Determine that each grid adopts formula with respect to the grey cluster result of rain wind induced vibration
Figure FDA00003072536300031
I=1,2 ..., n, the meshes number of n for dividing, k other number of rain wind induced vibration level for setting.
3. method according to claim 2 is characterized in that the described weight η that determines each grey cluster index jSpecifically comprise:
Step 301: the size of cluster result influence power is set up grey cluster index fuzzy preference relation matrix B=(b according to each grey cluster index Ij) M * m, bij is grey cluster index a iAnd a jThe precedence relationship coefficient, and have b ij = 1 a i > a j 0.5 a i = a j 0 a i < a j ; I=1,2 ..., m, j=1,2 ..., m, m are grey cluster index number;
Step 302: calculate fuzzy consensus matrix R by grey cluster index fuzzy preference relation matrix B, its computing formula is: R = ( r ij ) m &times; m = [ ( &Sigma; k = 1 m b ik - &Sigma; k = 1 m b jk ) / 2 m + 0.5 ] m &times; m ;
Step 303: according to formula
Figure FDA00003072536300034
Calculate the weight of grey cluster index; Wherein &eta; &OverBar; j = ( &Pi; i = 1 m r ij ) 1 / m .
4. according to any described method of claim of claim 1-3, it is characterized in that after the described step 5, also comprise mima type microrelief and microclimate correction, namely to the transmission line of electricity section through mima type microrelief and microclimate, further analyze, utilize landform and the meteorologic parameter of this section, wave again and the rain wind induced vibration grade classification, the aforementioned zones check off is really carried out refinement and correction.
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CN105717420A (en) * 2016-04-21 2016-06-29 江苏省电力公司苏州供电公司 Agglomerative hierarchical clustering method of power cables
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CN105717420A (en) * 2016-04-21 2016-06-29 江苏省电力公司苏州供电公司 Agglomerative hierarchical clustering method of power cables
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CN109243145A (en) * 2018-07-23 2019-01-18 中国电力科学研究院有限公司 A kind of the subregion assessment method for early warning and system of transmission line of electricity geological disaster
CN109387715A (en) * 2018-10-29 2019-02-26 全球能源互联网研究院有限公司 A kind of converter valve state online evaluation method and device based on grey cluster
CN111696330A (en) * 2019-03-13 2020-09-22 中国电力科学研究院有限公司 Classification method and system for wind disaster of power transmission line
CN111696330B (en) * 2019-03-13 2023-10-24 中国电力科学研究院有限公司 Classification method and system for wind disaster of power transmission line
CN113191535A (en) * 2021-04-14 2021-07-30 国网河南省电力公司电力科学研究院 Design wind speed correction method in gale disaster early warning

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