CN113514737A - Method, equipment and medium for calculating breakdown voltage of gap of power transmission line - Google Patents
Method, equipment and medium for calculating breakdown voltage of gap of power transmission line Download PDFInfo
- Publication number
- CN113514737A CN113514737A CN202110477817.8A CN202110477817A CN113514737A CN 113514737 A CN113514737 A CN 113514737A CN 202110477817 A CN202110477817 A CN 202110477817A CN 113514737 A CN113514737 A CN 113514737A
- Authority
- CN
- China
- Prior art keywords
- flame
- transmission line
- power transmission
- gap
- smoke
- 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.)
- Pending
Links
- 230000015556 catabolic process Effects 0.000 title claims abstract description 77
- 230000005540 biological transmission Effects 0.000 title claims abstract description 67
- 238000000034 method Methods 0.000 title claims abstract description 32
- 239000000779 smoke Substances 0.000 claims abstract description 50
- 238000004364 calculation method Methods 0.000 claims abstract description 19
- 239000002245 particle Substances 0.000 claims abstract description 14
- 238000012360 testing method Methods 0.000 claims abstract description 11
- 238000012937 correction Methods 0.000 claims description 27
- 238000012545 processing Methods 0.000 claims description 7
- 238000002485 combustion reaction Methods 0.000 claims description 6
- 239000013256 coordination polymer Substances 0.000 claims description 4
- 238000004590 computer program Methods 0.000 description 5
- 238000011160 research Methods 0.000 description 4
- 239000002023 wood Substances 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000004870 electrical engineering Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
- G01R31/1272—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of cable, line or wire insulation, e.g. using partial discharge measurements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/92—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating breakdown voltage
Abstract
The invention discloses a method, equipment and medium for calculating the breakdown voltage of a gap of a power transmission line, wherein the method comprises the steps of building a power transmission line test platform, and simulating flames generated when vegetation burns on the test platform; acquiring observation information of the flame, wherein the observation information comprises conductivity, height, temperature and smoke concentration data; dividing the gap of the power transmission line into a flame continuous area, a flame discontinuous area and a smoke area according to the conductivity data of the flame; respectively calculating the average breakdown field strengths of the flame continuous area, the flame discontinuous area and the smoke area according to the height data, the temperature data and the smoke concentration data; and calculating the breakdown voltage of the power transmission line according to the breakdown field strengths of the flame continuous area, the flame discontinuous area and the smoke area. According to the method, the transmission line gap is divided into three areas, and the temperature, the ion and the particle influence are respectively considered, so that a more accurate transmission line breakdown voltage calculation result is obtained.
Description
Technical Field
The invention relates to the technical field of electrical engineering, in particular to a method, equipment and medium for calculating breakdown voltage of a gap of a power transmission line.
Background
Due to the influence of natural and human factors such as extreme weather, burning wasteland, sacrifice and the like, large-scale mountain fire disasters nearby the corridor of the overhead transmission line sometimes occur. When a mountain fire occurs below the overhead transmission line, the gap insulation strength of the transmission line is obviously reduced, and breakdown faults are easily caused, so that the line is tripped.
At present, much research is carried out at home and abroad aiming at the breakdown fault risk of the power transmission line caused by the mountain fire, and it can be known that the discharge mechanism of the gap under the mountain fire condition mainly relates to three main factors, namely flame temperature, conductivity, particles and ash, and the insulation strength of the line gap under the mountain fire condition is easily reduced greatly under the comprehensive influence of the factors to cause the trip fault of the power transmission line.
Disclosure of Invention
Aiming at the technical problems, the invention provides a method, equipment and medium for calculating the breakdown voltage of a gap of a power transmission line, which can divide the gap into a flame continuous area, a flame discontinuous area and a smoke area according to the conductivity characteristic, further analyze the influence of flame conductivity, height, temperature and smoke concentration on different areas, and obtain more accurate breakdown voltage data of the power transmission line.
In a first aspect, the present invention provides a method for calculating a breakdown voltage of a gap of a power transmission line, including:
building a power transmission line test platform, and simulating flames generated when vegetation burns on the test platform;
acquiring observation information of the flame, wherein the observation information comprises conductivity, height, temperature and smoke concentration data;
dividing the gap of the power transmission line into a flame continuous area, a flame discontinuous area and a smoke area according to the conductivity data of the flame;
calculating the average breakdown field strengths of the flame continuous region, the flame discontinuous region and the smoke region according to the height data, the temperature data and the smoke concentration data;
and calculating the breakdown voltage of the power transmission line according to the breakdown field strengths of the flame continuous area, the flame discontinuous area and the smoke area.
Optionally, the calculation formula of the average breakdown field strength of the flame continuous zone is as follows: e1＝CT1Ci1E0In the formula, CT1Temperature correction coefficient, C, representing said flame continuumi1A flame correction factor, E, representing the flame continuum0Indicating the air breakdown field strength under standard conditions.
Optionally, the calculation formula of the average breakdown field strength of the flame discontinuity area is as follows: e2＝CT2Ci2E0In the formula, CT2Temperature correction coefficient, C, representing said flame discontinuityi2A flame correction factor, E, representing said flame discontinuity0Indicating the air breakdown field strength under standard conditions.
Optionally, the calculation formula of the average breakdown field strength of the smoke region is as follows: e3＝CPE0In the formula, CPRepresents a particle correction coefficient of the smoke region, E0Indicating the air breakdown field strength under standard conditions.
Optionally, the particle correction coefficient C of the smoke regionPBy the formula
And calculating, wherein R represents smoke concentration, when R is 0%, the flame is clean and has no dense smoke, and when R is 100%, the transmission line gap is filled with dense smoke.
Optionally, the calculation formula of the breakdown voltage of the power transmission line is as follows:
Ub＝Kf(E1H1+E2H2+E3H3)
in the formula, KfRepresenting the transmission line split number correction factor, E1Representing the average breakdown field strength, H, of said flame continuum1Indicating the height of said flame continuum, E2Representing the mean breakdown field strength, H, of said flame discontinuity2Indicating the height of said flame discontinuity, E3Represents the mean breakdown field strength, H, of the smoke region3Indicating the height of the smoke region.
The power transmission line split number correction factor KfThe method specifically comprises the following steps:
wherein N represents the number of power transmission line splits.
The observed information of the flame also includes the vegetation type, the ambient temperature and the depth of the combustion bed.
In a second aspect, the present invention provides a data processing apparatus, including a processor, coupled with a memory, where the memory stores a program, and the program is executed by the processor, so that the data processing apparatus executes the method for calculating a transmission line gap breakdown voltage according to the first aspect.
In a third aspect, the present invention also provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the method for calculating a transmission line gap breakdown voltage according to the first aspect.
Compared with the prior art, the invention has the beneficial effects that:
according to the method for calculating the breakdown voltage of the gap of the power transmission line, the gap below the corridor of the power transmission line is divided into three areas again according to the difference of the conductivity characteristics, when the breakdown voltage of the power transmission line is calculated, the influence of flame conductivity, height, temperature and particles on the discharge voltage is considered respectively, and the influence weight of the flame conductivity, the height, the temperature and the particles on each area is calculated, so that a more accurate breakdown voltage value of the power transmission line is obtained, and accurate basis is provided for research on the discharge mechanism and the discharge voltage of the gap of the power transmission line under the condition of mountain fire.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic flow chart of a method for calculating a breakdown voltage of a gap of a power transmission line according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a power transmission line test platform provided by an embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be understood that the step numbers used herein are for convenience of description only and are not intended as limitations on the order in which the steps are performed.
It is to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
The terms "comprises" and "comprising" indicate the presence of the described features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
The term "and/or" refers to and includes any and all possible combinations of one or more of the associated listed items.
In a first aspect, as shown in fig. 1, an embodiment of the present invention provides a method for calculating a gap breakdown voltage of a transmission line, including the following steps.
S11: and (3) building a power transmission line test platform, and simulating flames generated when vegetation burns on the test platform.
Referring to fig. 2, the power transmission line test platform is composed of a combustion platform and a wire, combustible materials such as wood stacks can be stacked on the combustion platform to simulate mountain fire flames generated when vegetation burns, and therefore a discharge model of a power transmission line gap is established.
S12: obtaining observation information of the flame, wherein the observation information comprises conductivity, height, temperature and smoke concentration data.
Specifically, the observation information of the flame further includes the vegetation type, the ambient temperature and the depth of the combustion bed, and the three kinds of observation information can be obtained through a monitoring mode or line patrol data.
S13: and dividing the gap of the power transmission line into a flame continuous area, a flame discontinuous area and a smoke area according to the conductivity data of the flame.
It should be noted that the difference between the conductivities of the flame continuous region and the flame discontinuous region is more than 100 times, the difference between the conductivities of the flame discontinuous region and the air part is more than 100 times, and the breakdown voltages required to be borne by the flame discontinuous region and the air part are often significantly different, so that the gap needs to be divided to ensure that more accurate breakdown voltage data is obtained.
The influence factors of the mountain fire are numerous, the discharge model under the mountain fire condition cannot be obtained through mathematical calculation, the gap segmentation is judged according to the flame form in the embodiment, specifically, the height information of the flame comprises the height of a flame continuous area, the height of a flame discontinuous area and the height of a smoke area, the three height information are obtained through observation tests, the total flame height can be calculated by utilizing the three data, and then the gap segmentation is divided into three areas according to the total gap length and the flame area proportion.
S14: and respectively calculating the average breakdown field strengths of the flame continuous region, the flame discontinuous region and the smoke region according to the height data, the temperature data and the smoke concentration data.
For the breakdown field intensity of the flame continuous area, the flame temperature of the flame continuous area can be obtained according to the distribution result of the vegetation fire temperature, and the vegetation burning scene is simulated by using the wood crib fire in the embodiment.
Specifically, the calculation formula of the flame temperature of the flame continuous zone is as follows:
wherein, TaRepresenting the ambient temperature, z the height of the flame tip from the ground, zdRepresenting the depth of the fuel bed; i denotes fire intensity, which is generally related to vegetation type and vegetation density; a represents a correlation coefficient, and the correlation coefficient is related to the vegetation type and meteorological factors, and can be represented by the formula:
is calculated to obtain, wherein D1Indicating the flame height, which does not include the wood crib height.
Because a certain amount of charges are accumulated in the flame continuous area, the charges easily cause discharge streams to be generated near the circuit, and a large number of particles cause electric field distortion near the circuit and reduce the insulating property, the temperature correction coefficient C of the flame continuous area is introduced in the embodimentT1And flame correction coefficient Ci1。
In particular, the temperature correction coefficient CT1Mainly related to vegetation types, the calculation formula is as follows:
wherein, TaDenotes the ambient temperature, HfIndicating the height of the flame continuum.
Temperature correction coefficient CT1The calculation of (a) is approximately solved by referring to Simpson's formula, which yields an acceptable error R of:
wherein eta is (0, H)f) Constant in between.
Therefore, the calculation formula of the influence degree of the high temperature generated by the wood crib fire on the average breakdown field strength is as follows:
in the formula, EaThe air gap breakdown field strength.
Correction coefficient for flame Ci1The calculation formula is as follows:
the parameter C represents the ion concentration coefficient and is generally related to the type of vegetation.
In summary, the calculation formula of the average breakdown field strength of the flame continuum is as follows:
in the formula, E0Indicating the air breakdown field strength under standard conditions.
For the breakdown field intensity of the flame discontinuity zone, the flame temperature of the flame discontinuity zone can be assumed to be a constant value T because the flame discontinuity zone is shorter and is positioned at the top of the flame2Temperature correction coefficient C of flame discontinuity zoneT2Comprises the following steps:
meanwhile, as a great deal of charges are accumulated in the discontinuous flame region, the insulating property is easily further reduced, and for this reason, the flame correction coefficient C of the discontinuous flame layer is introduced in the embodimenti2Then, the average breakdown field of the flame discontinuity can be calculated as follows:
as for the breakdown field intensity of the smoke area, the vegetation combustion is considered to generate carbonized small particles and ash dense smoke, the dense smoke contains a large amount of solid small particles, the insulation strength of the gap of the power transmission line is easily reduced obviously, and researches show that when the whole gap is filled with the dense smoke, the power transmission line transmits powerThe breakdown voltage of the line is only 1/15 of the original breakdown voltage, and for this reason, the particle correction coefficient C is introduced in the embodimentPThe method is used for further correcting the breakdown voltage of the air gap under the condition of the forest fire.
Specifically, the average breakdown field strength of the smoke region can be determined by the formula E3＝CPE0And (6) performing calculation.
Specifically, the present embodiment also introduces R representing the smoke density, which is 100% when the dense smoke fills the entire gap; when the flame is clean and no dense smoke exists, the air gap has no impurities, and the smoke concentration R is 0 percent.
In the present embodiment, the formula can be passed
Calculating to obtain a particle correction coefficient CP。
It should be noted that, in practical applications, a hyperbolic curve may be used to fit the grain correction coefficient CPThe relation with the smoke concentration R.
S15: and calculating the breakdown voltage of the power transmission line according to the breakdown field strengths of the flame continuous area, the flame discontinuous area and the smoke area.
Specifically, the heights of the flame continuous region, the flame discontinuous region and the smoke region are respectively set to be H1、H2And H3Combining the formula, the breakdown voltage U of the power transmission line under the condition of the forest fire can be obtainedbComprises the following steps:
Ub＝Kf(E1H1+E2H2+E3H3)
wherein, KfFor the correction factor of the splitting number of the power transmission line, the splitting number of the conductor is expressed by N, and the number is taken
According to the method, the gap of the power transmission line is divided into three areas according to the difference of the conductivity characteristics, the influence of temperature, ions and particles on the discharge voltage is considered when the breakdown voltage of the power transmission line is calculated, the influence weight of the gap on each area is calculated, so that a more accurate breakdown voltage value of the power transmission line is obtained, and accurate basis can be provided for research on the discharge mechanism and the discharge voltage of the gap of the power transmission line under the condition of mountain fire.
In a second aspect, an embodiment of the present invention provides a data processing apparatus, where the data processing apparatus includes a processor, the processor is coupled with a memory, and the memory stores a program, where the program is executed by the processor, so that the data processing apparatus executes the method for calculating a transmission line gap breakdown voltage according to the first aspect.
In a third aspect, an embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the method for calculating a transmission line gap breakdown voltage according to the first aspect is implemented.
It will be understood by those skilled in the art that all or part of the processes of the methods of the above embodiments may be implemented by a computer program, which may be stored in a computer-readable storage medium, and may include the processes of the embodiments of the methods when executed. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (10)
1. A method for calculating breakdown voltage of a gap of a power transmission line is characterized by comprising the following steps:
building a power transmission line test platform, and simulating flames generated when vegetation burns on the test platform;
acquiring observation information of the flame, wherein the observation information comprises conductivity, height, temperature and smoke concentration data;
dividing the gap of the power transmission line into a flame continuous area, a flame discontinuous area and a smoke area according to the conductivity data of the flame;
calculating the average breakdown field strengths of the flame continuous region, the flame discontinuous region and the smoke region according to the height data, the temperature data and the smoke concentration data;
and calculating the breakdown voltage of the power transmission line according to the breakdown field strengths of the flame continuous area, the flame discontinuous area and the smoke area.
2. The method for calculating the breakdown voltage of the gap of the power transmission line according to claim 1, further comprising:
the calculation formula of the average breakdown field strength of the flame continuous zone is as follows: e1＝CT1Ci1E0，
In the formula, CT1Temperature correction coefficient, C, representing said flame continuumi1A flame correction factor, E, representing the flame continuum0Indicating the air breakdown field strength under standard conditions.
3. The method for calculating the breakdown voltage of the gap of the power transmission line according to claim 1, further comprising:
the calculation formula of the average breakdown field strength of the flame discontinuous region is as follows: e2＝CT2Ci2E0，
In the formula, CT2Temperature correction coefficient, C, representing said flame discontinuityi2A flame correction factor, E, representing said flame discontinuity0Indicating the air breakdown field strength under standard conditions.
4. The method for calculating the breakdown voltage of the gap of the power transmission line according to claim 1, further comprising:
the average breakdown field intensity calculation formula of the smoke region is as follows: e3＝CPE0，
In the formula, CPRepresents a particle correction coefficient of the smoke region, E0Indicating the air breakdown field strength under standard conditions.
5. The method for calculating the breakdown voltage of the gap of the transmission line according to claim 4, further comprising:
particle correction coefficient C of the smoke regionPBy the formula
And calculating, wherein R represents smoke concentration, when R is 0%, the flame is clean and has no dense smoke, and when R is 100%, the transmission line gap is filled with dense smoke.
6. The method for calculating the breakdown voltage of the gap of the power transmission line according to claim 1, further comprising:
the calculation formula of the breakdown voltage of the power transmission line is as follows:
Ub＝Kf(E1H1+E2H2+E3H3)
in the formula, KfRepresenting the transmission line split number correction factor, E1Representing the average breakdown field strength, H, of said flame continuum1Indicating the height of said flame continuum, E2Representing the mean breakdown field strength, H, of said flame discontinuity2Indicating the height of said flame discontinuity, E3Represents the mean breakdown field strength, H, of the smoke region3Indicating the height of the smoke region.
7. The method according to claim 1, wherein the observation information of the flame further includes vegetation type, ambient temperature, and depth of a combustion bed.
8. The method for calculating the breakdown voltage of the gap of the transmission line according to claim 6, wherein the method is characterized in thatThen, the power transmission line split number correction factor KfThe method specifically comprises the following steps:
wherein N represents the number of power transmission line splits.
9. A data processing apparatus, characterized by comprising:
a processor coupled to a memory, the memory storing a program that is executed by the processor to cause the data processing apparatus to perform the transmission line gap breakdown voltage calculation method of any one of claims 1 to 8.
10. A computer storage medium, characterized in that the computer storage medium stores computer instructions for executing the transmission line gap breakdown voltage calculation method according to any one of the preceding claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110477817.8A CN113514737A (en) | 2021-04-29 | 2021-04-29 | Method, equipment and medium for calculating breakdown voltage of gap of power transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110477817.8A CN113514737A (en) | 2021-04-29 | 2021-04-29 | Method, equipment and medium for calculating breakdown voltage of gap of power transmission line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113514737A true CN113514737A (en) | 2021-10-19 |
Family
ID=78063635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110477817.8A Pending CN113514737A (en) | 2021-04-29 | 2021-04-29 | Method, equipment and medium for calculating breakdown voltage of gap of power transmission line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113514737A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104751251A (en) * | 2015-04-17 | 2015-07-01 | 哈尔滨工业大学 | Method for predicting shutdown probability of power grids under combined effect conditions of extreme high temperatures and forest fire |
| CN104915775A (en) * | 2015-06-05 | 2015-09-16 | 国家电网公司 | Risk assessment and emergency decision-making method for forest fire disaster of power transmission line |
| CN106886841A (en) * | 2017-02-24 | 2017-06-23 | 湖南省湘电试研技术有限公司 | Without the circuit mountain fire Disaster Assessment method and system of Real-time Collection field data |
| RU2685462C1 (en) * | 2018-05-15 | 2019-04-18 | Общество с ограниченной ответственностью "КОТЭС Инжиниринг" | Flame combustion of fuel |
| CN111967193A (en) * | 2020-08-25 | 2020-11-20 | 国网安徽省电力有限公司 | Method for calculating tripping probability of power transmission line under condition of forest fire |
-
2021
- 2021-04-29 CN CN202110477817.8A patent/CN113514737A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104751251A (en) * | 2015-04-17 | 2015-07-01 | 哈尔滨工业大学 | Method for predicting shutdown probability of power grids under combined effect conditions of extreme high temperatures and forest fire |
| CN104915775A (en) * | 2015-06-05 | 2015-09-16 | 国家电网公司 | Risk assessment and emergency decision-making method for forest fire disaster of power transmission line |
| CN106886841A (en) * | 2017-02-24 | 2017-06-23 | 湖南省湘电试研技术有限公司 | Without the circuit mountain fire Disaster Assessment method and system of Real-time Collection field data |
| RU2685462C1 (en) * | 2018-05-15 | 2019-04-18 | Общество с ограниченной ответственностью "КОТЭС Инжиниринг" | Flame combustion of fuel |
| CN111967193A (en) * | 2020-08-25 | 2020-11-20 | 国网安徽省电力有限公司 | Method for calculating tripping probability of power transmission line under condition of forest fire |
Non-Patent Citations (2)
| Title |
|---|
| 周志宇: "山火灾害下电网输电线路跳闸风险评估研究", 《中国博士学位论文全文数据库 工程科技I辑》 * |
| 邵尤国 等: "山火条件下的特高压输电线路击穿概率模型研究与分析", 《电测与仪表》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107230015B (en) | Power distribution network toughness evaluation method based on system information entropy | |
| CN113780757B (en) | Determination method of electrical fire risk assessment weight index coefficient | |
| CN106908674B (en) | Transformer state evaluation method based on multi-state quantity prediction | |
| CN106886841B (en) | Circuit mountain fire Disaster Assessment method and system without real-time collection site information | |
| WO2021057107A1 (en) | Direct-current arc detection method, apparatus, device and system and storage medium | |
| US20100286954A1 (en) | Method for determining lightning hazard distribution of power network | |
| CN110009031B (en) | Satellite mountain fire point secondary screening method based on multi-source remote sensing data | |
| CN113792442B (en) | Modeling analysis method for arc light grounding fault of power distribution network | |
| CN115169931B (en) | Power transmission line safety state assessment method based on digital twinning | |
| CN105760979A (en) | Power system transient risk evaluation method taking natural disasters into consideration | |
| CN110941802B (en) | Power transmission line mountain fire tripping probability calculation method considering meteorological factors | |
| Santos et al. | Automatic building of a simulated high impedance fault database | |
| Kercher et al. | Analysis of SILVA: A model for forecasting the effects of SO2 pollution and fire on western coniferous forests | |
| WO2023035494A1 (en) | Three-dimensional power transmission corridor wildfire monitoring and control method and system | |
| CN113514737A (en) | Method, equipment and medium for calculating breakdown voltage of gap of power transmission line | |
| CN116305832A (en) | Real-time forest fire spreading simulation method, fire extinguishing decision method and early warning system | |
| CN111967193B (en) | Power transmission line tripping probability calculation method under forest fire condition | |
| Dai D | Simulating fire spread in a community using an agent-based model | |
| CN116167205A (en) | High-voltage transmission line hidden defect detection method and early warning system | |
| CN105046081A (en) | Sampling inspection method and apparatus for fire-fighting places | |
| Nazemi et al. | Parameterized Wildfire Fragility Functions for Overhead Power Line Conductors | |
| CN113139272A (en) | Forest fire spreading prediction method, device, equipment and storage medium | |
| Serrano et al. | Risk Assessment of Power Systems Against Wildfires | |
| CN113793021B (en) | Three-dimensional power transmission corridor mountain fire monitoring device and method | |
| Wang et al. | Risk analysis method based on FMEA for transmission line in lightning hazards |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211019 |
|
| RJ01 | Rejection of invention patent application after publication |