CN107063066A - A kind of power transmission line sag inversion method based on electric field information - Google Patents
A kind of power transmission line sag inversion method based on electric field information Download PDFInfo
- Publication number
- CN107063066A CN107063066A CN201710296516.9A CN201710296516A CN107063066A CN 107063066 A CN107063066 A CN 107063066A CN 201710296516 A CN201710296516 A CN 201710296516A CN 107063066 A CN107063066 A CN 107063066A
- Authority
- CN
- China
- Prior art keywords
- field strength
- transmission line
- electricity
- ground
- solution
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses a kind of power transmission line sag inversion method based on electric field information, comprise the following steps：1) will then ground field strength data build taboo list as ground field strength sample, then using the sag of the corresponding transmission line of electricity under normal circumstances of each ground field strength sample as the feasible solution of tabu search algorithm under transmission line of electricity under normal circumstances；2) ground field strength data under actual transmission line of electricity are obtained, when the error between any ground field strength sample in field strength data in ground under actual transmission line of electricity and taboo list is less than or equal to preset value, then the ground field strength sample is corresponded into the feasible solution of tabu search algorithm as the sag of actual transmission line of electricity；Otherwise, then step 3 is gone to)；3) the neighborhood solution of some tabu search algorithm feasible solutions is produced, then taboo list is updated, step 2 is then gone to), this method being capable of the sag based on field intensity information inverting transmission line of electricity in ground under transmission line of electricity.
Description
Technical field
The invention belongs to power grid security and maintenance technology field, it is related to a kind of power transmission line sag based on electric field information anti-
Drill method.
Background technology
Sag is the important parameter of transmission line of electricity operation maintenance, is related to the safety and stability of power network, therefore, circuit
The size of sag must be within the limits prescribed in design and operation.But because transmission line of electricity can be by line load and environment temperature
The influence of degree, the sag of circuit can be continually changing.For example：Circuit increase-volume can cause conductor temperature to raise, and cause wire elongation, arc
Hang down and increase；Wire icing can increase circuit than load, cause sag to increase.These factors are likely to form accident potential, therefore,
It is necessary to verify sag and monitored, to ensure the normal operation of circuit and be spanned the safety of object.
The open report of the correlative study of power transmission line sag monitoring at home and abroad is relatively more, such as manual inspection method, image
The technologies such as processing monitoring method, helicopter line data-logging, GPS location ranging monitoring method, weight method, thermometry have been widely used
In actual monitoring, but these methods still suffer from deficiency, there are many problems during practice, such as due to circuit at
Big etc. in wilderness and span, there is potential safety hazard and poor real in manual inspection method；Image treating is easily by extraneous and weather shadow
Ring, the picture that helicopter routing inspection is shot still needs to eye recognition, less efficient etc..Therefore need to further investigate new sag monitoring side
Method, makes up the deficiency of existing method.The change of power transmission line sag is finally all shown in the change of its terrain clearance.With arc
The change for terrain clearance of hanging down, ground field strength can change therewith, therefore obtain field intensity information using ground field strength measurement technology, from
And be finally inversed by sag, by less field strength parameter, more accurate sag is can obtain without changing circuit, and be difficult by
Ground field strength inverting power transmission line sag can not be passed through to the influence of the conditions such as surrounding environment, meteorology, but in the prior art
Technology.
The content of the invention
It is an object of the invention to the shortcoming for overcoming above-mentioned prior art, there is provided a kind of power transmission line based on electric field information
Road sag inversion method, this method being capable of the sag based on field intensity information inverting transmission line of electricity in ground under transmission line of electricity.
To reach above-mentioned purpose, the power transmission line sag inversion method of the present invention based on electric field information includes following
Step：
1) ground field strength data under some transmission lines of electricity under normal circumstances are measured, then will be under normal circumstances under transmission line of electricity
Face field strength data are made as ground field strength sample, then by the sag of the corresponding transmission line of electricity under normal circumstances of each ground field strength sample
For the feasible solution of tabu search algorithm, then pass through the feasible destructing of each ground field strength sample and its corresponding tabu search algorithm
Build taboo list；
2) ground field strength data under actual transmission line of electricity are obtained, then by field strength data in ground under actual transmission line of electricity with avoiding
Ground field strength sample in table is contrasted, when field strength data in ground under actual transmission line of electricity and any ground field strength in taboo list
When error between sample is less than or equal to preset value, then using the feasible solution of ground field strength sample correspondence tabu search algorithm as
The optimal solution of search, and using the optimal solution of the search as actual transmission line of electricity sag；When ground under actual transmission line of electricity
When error in strong data and taboo list between each ground field strength sample is all higher than preset value, then step 3 is gone to)；
3) feasible solution of tabu search algorithm in taboo list is changed by move function, produces some TABU search
The neighborhood solution of algorithm feasible solution, and using the neighborhood solution of the tabu search algorithm feasible solution of generation as candidate solution, then by described
Candidate solution is updated to taboo list, then goes to step 2).
Step 3) in taboo list is updated by the candidate solution, then go to step 2) concrete operations be：
3a) each candidate solution is judged by aspiration criterion, when candidate solution, which is met, despises rule, then by the candidate solution
And corresponding ground field strength is added in taboo list, then go to step 2)；When candidate solution is unsatisfactory for despising rule, then go to
Step 3b)；
3b) candidate solution outside taboo list in each candidate solution and its corresponding ground field strength are added in taboo list, so
After go to step 2) in.
The expression formula of move function is：
xnew=x+k* Δs x
Wherein, k=± 1, ± 2..., xnewFor the neighborhood solution of the feasible solution x of tabu search algorithm in taboo list, Δ x is shifting
Dynamic unit, Δ x is the function on mobile frequency n.
The invention has the advantages that：
Power transmission line sag inversion method of the present invention based on electric field information passes through positive reason in concrete operations
Ground field strength data and corresponding sag are used as the feasible solution of tabu search algorithm and its corresponding under transmission line of electricity under condition
Face field strength sample builds taboo list, then compares ground field strength data and the ground field strength in taboo list under actual transmission of electricity transmission line of electricity
Sample is contrasted, and when both errors are less than or equal to preset value, then regard the corresponding feasible solution of ground field strength sample as reality
The sag of power delivery circuit, when both errors are more than or equal to preset value, then produces the neighbour of some feasible solutions by move function
Domain is solved, and taboo list is updated by each neighborhood solution, and finally make under actual transmission of electricity transmission line of electricity ground field strength data and
Untill the error between the field strength sample of ground in taboo list is less than or equal to preset value, the arc of actual transmission line of electricity is finally searched out
Hang down.It should be noted that the present invention need not change transmission line of electricity, you can obtain accurate sag by move function, realize arc
Vertical verification and monitoring ensures the normal operation of transmission line of electricity, the safety and stablization of power network is safeguarded, with more wide application
Prospect.
Brief description of the drawings
Fig. 1 is the computation model figure of transmission of electricity guide passage power frequency electric field in the present invention；
Fig. 2 is the flow chart of the present invention.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings：
With reference to Fig. 1 and Fig. 2, the power transmission line sag inversion method of the present invention based on electric field information includes following step
Suddenly：
1) ground field strength data under some transmission lines of electricity under normal circumstances are measured, then will be under normal circumstances under transmission line of electricity
Face field strength data are made as ground field strength sample, then by the sag of the corresponding transmission line of electricity under normal circumstances of each ground field strength sample
For the feasible solution of tabu search algorithm, then pass through the feasible destructing of each ground field strength sample and its corresponding tabu search algorithm
Build taboo list；
2) ground field strength data under actual transmission line of electricity are obtained, then by field strength data in ground under actual transmission line of electricity with avoiding
Ground field strength sample in table is contrasted, when field strength data in ground under actual transmission line of electricity and any ground field strength in taboo list
When error between sample is less than or equal to preset value, then using the feasible solution of ground field strength sample correspondence tabu search algorithm as
The optimal solution of search, and using the optimal solution of the search as actual transmission line of electricity sag；When ground under actual transmission line of electricity
When error in strong data and taboo list between each ground field strength sample is all higher than preset value, then step 3 is gone to)；
3) feasible solution of tabu search algorithm in taboo list is changed by move function, produces some TABU search
The neighborhood solution of algorithm feasible solution, and using the neighborhood solution of the tabu search algorithm feasible solution of generation as candidate solution, then by described
Candidate solution is updated to taboo list, then goes to step 2).
Step 3) in taboo list is updated by the candidate solution, then go to step 2) concrete operations be：
3a) each candidate solution is judged by aspiration criterion, when candidate solution, which is met, despises rule, then by the candidate solution
And corresponding ground field strength is added in taboo list, then go to step 2)；When candidate solution is unsatisfactory for despising rule, then go to
Step 3b)；
3b) candidate solution outside taboo list in each candidate solution and its corresponding ground field strength are added in taboo list, so
After go to step 2) in.
The expression formula of move function is：
xnew=x+k* Δs x
Wherein, k=± 1, ± 2..., xnewFor the neighborhood solution of the feasible solution x of tabu search algorithm in taboo list, Δ x is shifting
Dynamic unit, Δ x is the function on mobile frequency n.
Claims (3)
1. a kind of power transmission line sag inversion method based on electric field information, it is characterised in that comprise the following steps：
1) ground field strength data under some transmission lines of electricity under normal circumstances are measured, will ground field strength under transmission line of electricity under normal circumstances
Data are used as taboo as ground field strength sample, then using the sag of the corresponding transmission line of electricity under normal circumstances of each ground field strength sample
The feasible solution of searching algorithm, is then built by each ground field strength sample and its feasible solution of corresponding tabu search algorithm and avoided
Table；And obtain field strength data in ground under actual transmission line of electricity；
2) field strength data in ground under actual transmission line of electricity are contrasted with the ground field strength sample in taboo list, when actual transmission of electricity
When error under circuit in ground field strength data and taboo list between any ground field strength sample is less than or equal to preset value, then should
Ground field strength sample corresponds to the feasible solution of tabu search algorithm as the optimal solution of search, and regard the optimal solution of the search as reality
The sag of border transmission line of electricity；Mistake between each ground field strength sample in field strength data in ground under actual transmission line of electricity and taboo list
When difference is all higher than preset value, then step 3 is gone to)；
3) feasible solution of tabu search algorithm in taboo list is changed by move function, produces some tabu search algorithms
The neighborhood solution of feasible solution, and using the neighborhood solution of the tabu search algorithm feasible solution of generation as candidate solution, then pass through the candidate
Solution is updated to taboo list, then goes to step 2).
2. the power transmission line sag inversion method according to claim 1 based on electric field information, it is characterised in that step 3)
In taboo list is updated by the candidate solution, then go to step 2) concrete operations be：
3a) each candidate solution is judged by aspiration criterion, when candidate solution, which is met, despises rule, then by the candidate solution and
Corresponding ground field strength is added in taboo list, then goes to step 2)；When candidate solution is unsatisfactory for despising rule, then step is gone to
3b)；
3b) candidate solution outside taboo list in each candidate solution and its corresponding ground field strength are added in taboo list, Ran Houzhuan
To step 2) in.
3. the power transmission line sag inversion method according to claim 1 based on electric field information, it is characterised in that mobile letter
Several expression formulas are：
xnew=x+k* Δs x
Wherein, k=± 1, ± 2..., xnewFor the neighborhood solution of the feasible solution x of tabu search algorithm in taboo list, Δ x is mobile single
Position, Δ x is the function on mobile frequency n.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710296516.9A CN107063066B (en) | 2017-04-28 | 2017-04-28 | A kind of power transmission line sag inversion method based on electric field information |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710296516.9A CN107063066B (en) | 2017-04-28 | 2017-04-28 | A kind of power transmission line sag inversion method based on electric field information |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107063066A true CN107063066A (en) | 2017-08-18 |
| CN107063066B CN107063066B (en) | 2019-06-18 |
Family
ID=59605474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710296516.9A Active CN107063066B (en) | 2017-04-28 | 2017-04-28 | A kind of power transmission line sag inversion method based on electric field information |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107063066B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101349720A (en) * | 2008-08-28 | 2009-01-21 | 重庆电力科学试验研究院 | High pressure overhead power line power frequency electric field shielding analysis method |
| CN102721875A (en) * | 2012-06-15 | 2012-10-10 | 四川电力科学研究院 | Method for measuring three-dimensional power-frequency electric field on basis of curve integral of equivalent charges on surfaces of transmission conductors |
| CN104215180A (en) * | 2014-08-20 | 2014-12-17 | 国家电网公司 | Wireless sensor network based power transmission line sag detection device |
| CN105069282A (en) * | 2015-07-21 | 2015-11-18 | 国家电网公司 | Method for measuring and calculating magnetic field intensity near high-voltage power transmission line on mountain slope |
| CN105427190A (en) * | 2015-12-09 | 2016-03-23 | 国网重庆市电力公司电力科学研究院 | Three-dimensional power-frequency electric-field calculating method of ground below UHVAC power transmission line in complex terrain |
-
2017
- 2017-04-28 CN CN201710296516.9A patent/CN107063066B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101349720A (en) * | 2008-08-28 | 2009-01-21 | 重庆电力科学试验研究院 | High pressure overhead power line power frequency electric field shielding analysis method |
| CN102721875A (en) * | 2012-06-15 | 2012-10-10 | 四川电力科学研究院 | Method for measuring three-dimensional power-frequency electric field on basis of curve integral of equivalent charges on surfaces of transmission conductors |
| CN104215180A (en) * | 2014-08-20 | 2014-12-17 | 国家电网公司 | Wireless sensor network based power transmission line sag detection device |
| CN105069282A (en) * | 2015-07-21 | 2015-11-18 | 国家电网公司 | Method for measuring and calculating magnetic field intensity near high-voltage power transmission line on mountain slope |
| CN105427190A (en) * | 2015-12-09 | 2016-03-23 | 国网重庆市电力公司电力科学研究院 | Three-dimensional power-frequency electric-field calculating method of ground below UHVAC power transmission line in complex terrain |
Non-Patent Citations (2)
| Title |
|---|
| 李大卫等: "遗传算法与禁忌搜索算法的混合策略", 《***工程学报》 * |
| 陈楠等: "基于电场逆运算的输电导线弧垂计算方法", 《中国电机工程学报》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107063066B (en) | 2019-06-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104764985B (en) | One kind is based on parameter identification estimation Oil-Paper Insulation low frequency dielectric loss method | |
| CN110264448A (en) | A kind of insulator breakdown detection method based on machine vision | |
| CN107895205B (en) | GIS contact hot spot temperature prediction method based on particle swarm-support vector regression | |
| CN102519846B (en) | Hyperspectrum-based composite insulator hydrophobicity detection method | |
| CN107037269A (en) | A kind of power transmission line lightning shielding method for early warning | |
| CN102520323B (en) | Hyperspectrum-based composite insulator aging operating state detection method | |
| US20130066600A1 (en) | Method and apparatus for real-time line rating of a transmission line | |
| CN105136908B (en) | Bridge Structural Damage localization method based on sign frequency Spatio-temporal Evolution | |
| CN108344917A (en) | The cross interconnected cable on-line fault diagnosis method of 110kV crosslinked polyethylenes based on method of loci | |
| CN104316851A (en) | Method and device for automatically monitoring pollution of line insulators | |
| CN104406558A (en) | Method for monitoring power transmission line sag | |
| CN105738772A (en) | Compulsory disturbance source positioning method based on power and frequency fluctuation phase | |
| CN103604914B (en) | Mine Internet of Things coal-mine gas mobility detect data processing method | |
| CN105067916A (en) | Ultrahigh frequency radiation characteristic simulation method and system of oilpaper capacitance bushing lifting seat | |
| CN103999316A (en) | Method for generating a signal indicating an oscillation in an electrical energy supply network | |
| Han et al. | Transformer defects detection method based on visible and infrared fusion images | |
| CN107063066A (en) | A kind of power transmission line sag inversion method based on electric field information | |
| CN203414072U (en) | Transmission line sag monitoring system | |
| Reddy et al. | An on-line geographical information system–based condition monitoring system for 11-kv distribution line insulator | |
| CN106155980B (en) | Overhead transmission line field wire coupling modeling method based on inhomogeneous excitation electric field | |
| CN105893743A (en) | Transmission line standard ice thickness calculation method based on meteorological station | |
| CN116125330A (en) | Grounding wire current monitoring and early warning method and system for armored shielding secondary cable | |
| CN108196168A (en) | A kind of partial discharge pulse detecting method, system, terminal and readable storage medium storing program for executing | |
| Wang et al. | The hydrophobic detection of transformer composite insulator bushing based on digital image processing technique | |
| CN105589015A (en) | Cable oscillation wave partial discharge detection fault judgment standard building method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |