CN108152867A - Typhoon early warning system and method for power transmission line - Google Patents
Typhoon early warning system and method for power transmission line Download PDFInfo
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- G01W1/02—Instruments for indicating weather conditions by measuring two or more variables, e.g. humidity, pressure, temperature, cloud cover or wind speed
- G01W1/06—Instruments for indicating weather conditions by measuring two or more variables, e.g. humidity, pressure, temperature, cloud cover or wind speed giving a combined indication of weather conditions
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Abstract
The invention discloses a typhoon early warning system and a typhoon early warning method for a power transmission line, relates to the technical field of power systems, and is used for carrying out fine early warning on typhoon passing through the power transmission line so as to reduce the risk of tower collapse and disconnection of the power transmission line and provide a wind speed basis for design and check of wind damage tower collapse. The typhoon early warning system comprises a typhoon data input unit, a wind field model generating unit in signal connection with the typhoon data input unit, a computational fluid mechanics unit in signal connection with the wind field model generating unit, a risk early warning unit in signal connection with the computational fluid mechanics unit, and a typhoon influence line set in signal connection with the wind field model generating unit and the risk early warning unit respectively. The typhoon early warning method utilizes the typhoon early warning system to carry out early warning on typhoon passing through the power transmission line. The typhoon early warning system and the typhoon early warning method are used for monitoring and early warning of the grid wind disaster.
Description
Technical field
The present invention relates to technical field of power systems more particularly to the typhoon early warning systems and method of a kind of transmission line of electricity.
Background technology
Transmission line of electricity is the important component of electric system, and safety is directly related to national economic development and the people
Life, thus it is guaranteed that the operation of transmission line of electricity normal reliable is vital.But since transmission line of electricity has shaft tower height, span
Greatly, the features such as shaft tower is flexible strong, the coupling between grounded-line and the geometrical non-linearity of insulator chain and tower line in addition,
So that transmission line of electricity is very sensitive to the exciting effect of typhoon, it is susceptible to the broken string of falling tower phenomenon.Therefore, it is multiple to being located at typhoon
The transmission line of electricity of area such as coastal area, which carries out typhoon early warning, to be necessary, by carrying out typhoon early warning to transmission line of electricity,
Power supply department can be instructed to carry out targetedly protected working to transmission line of electricity in advance, reduce loss caused by typhoon；In addition, also
Can be the typhoon data obtained by transmission line of electricity, the construction for follow-up transmission line of electricity provides data reference.
At present, the typhoon data of meteorological department's announcement, but the typhoon are relied primarily on to the typhoon method for early warning of transmission line of electricity
Data are typically that the whole typhoon situation usually monitored by meteorological department in extensive area obtains, and data are more general, and
Involved typhoon regional extent is larger, it is impossible to reach to carrying out fine early warning by the typhoon of transmission line of electricity, lead to part area
The transmission line of electricity in domain is not protected targetedly, there is the broken string of falling tower risk so as to cause transmission line of electricity.
Invention content
The purpose of the present invention is to provide the typhoon early warning system and method for a kind of transmission line of electricity, for passing through power transmission line
The typhoon on road carries out fine early warning, to reduce the broken string of falling tower of transmission line of electricity risk.
To achieve these goals, the present invention provides following technical solution：
The first aspect of the present invention provides a kind of typhoon early warning system, and the typhoon early warning system includes：
Typhoon influence sets of lines, for storing transmission line of electricity Distribution GIS distribution map, earth's surface number at transmission line of electricity
According to, tower use condition library and the warning grade table of comparisons；
Typhoon data input cell, for providing typhoon data；
The wind-field model generation being connect respectively with the typhoon influence sets of lines and the typhoon data input cell signal
Unit, the wind-field model generation unit draw a circle to approve survey region according to the Power Transmission Line GIS distribution map and the typhoon data,
And wind-field model is established according to surface data at the transmission line of electricity of the survey region, the survey region is passed through and is set for typhoon
There is the high wind region of transmission line of electricity；
The Fluid Mechanics Computation unit being connect with the wind-field model generation unit signal, the Fluid Mechanics Computation unit
For calculating the simulation wind speed of different location in the wind-field model；
The Risk-warning unit being connect respectively with the Fluid Mechanics Computation unit and the typhoon influence sets of lines signal,
The Risk-warning unit be used for calculate it is described simulation wind speed and the tower use condition library in designed wind speed of poles and towers between
Wind speed ratio, and the warning grade table of comparisons is searched according to the wind speed ratio, determines that the typhoon of the survey region is pre-
Alert grade.
Based on the technical solution of above-mentioned typhoon early warning system, the second aspect of the present invention provides a kind of typhoon method for early warning,
The typhoon method for early warning includes：
It provides and one is stored with Power Transmission Line GIS distribution map, surface data, tower use condition library and early warning at transmission line of electricity
The typhoon influence sets of lines of the grade table of comparisons；
Typhoon data input cell provides typhoon data；
Wind-field model generation unit draws a circle to approve survey region according to the Power Transmission Line GIS distribution map and the typhoon data,
And wind-field model is established according to surface data at the transmission line of electricity of the survey region, the survey region is passed through and is set for typhoon
There is the high wind region of transmission line of electricity；
Fluid Mechanics Computation unit calculates the simulation wind speed of different location in the wind-field model；
Risk-warning unit is used to calculate the designed wind speed of poles and towers in the simulation wind speed and the tower use condition library
Between wind speed ratio, and the warning grade table of comparisons is searched according to the wind speed ratio, determines the platform of the survey region
Wind warning grade.
Compared with prior art, the present invention it has the advantages that：
When carrying out typhoon early warning to transmission line of electricity using typhoon early warning system provided in an embodiment of the present invention, due to power grid public affairs
The typhoon data that the data that the typhoon observation system of department provides can constantly provide meteorological department are verified and are corrected, together
When since also the surface data at transmission line of electricity in survey region is integrated into wind-field model, the embodiment of the present invention is built
Vertical wind-field model high resolution, fidelity original text can directly reflect the situation of power transmission line corridor and typhoon substantially.Moreover,
It is realized using Fluid Mechanics Computation unit and Risk-warning unit to accurately being counted per the wind speed of base shaft tower position in survey region
Calculation and typhoon warning grade it is achieved thereby that carrying out fine early warning by the typhoon of transmission line of electricity, reduce transmission line of electricity
The broken string of falling tower risk.In addition, by the typhoon data investigation to Power Transmission Line GIS distribution map of simulation, can also iris out impacted
Shaft tower so as to carry out key protection to these shaft towers, further reduces the broken string of the falling tower risk of transmission line of electricity.
Description of the drawings
Attached drawing described herein is used to provide further understanding of the present invention, and forms the part of the present invention, this hair
Bright illustrative embodiments and their description do not constitute improper limitations of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 is the structure diagram of typhoon early warning system in the embodiment of the present invention；
Fig. 2 is a kind of schematic diagram of wind-field model provided in an embodiment of the present invention；
Fig. 3 is the flow chart of typhoon method for early warning in the embodiment of the present invention；
Fig. 4 is the flow chart of step 40 in Fig. 3.
Specific embodiment
For ease of understanding, with reference to the accompanying drawings of the specification, to the typhoon early warning of transmission line of electricity provided in an embodiment of the present invention
System and method is described in detail.
Referring to Fig. 1, typhoon early warning system provided in an embodiment of the present invention includes typhoon data input cell, with typhoon number
According to the wind-field model generation unit that input unit signal connects, the Fluid Mechanics Computation being connect with wind-field model generation unit signal
Unit, the Risk-warning unit being connect with Fluid Mechanics Computation cell signal and respectively with wind-field model generation unit and wind
The typhoon influence sets of lines of dangerous prewarning unit signal connection.Wherein, typhoon data input cell is used to provide typhoon data；Typhoon
Influence sets of lines for store transmission line of electricity GIS-Geographic Information System (Geographic Information System, hereinafter referred to as
For GIS) distribution map, surface data, tower use condition library and the warning grade table of comparisons at transmission line of electricity.Wind-field model generation is single
Member draws a circle to approve survey region according to the typhoon data that Power Transmission Line GIS distribution map and typhoon data input cell provide, and according to grinding
Study carefully surface data at the transmission line of electricity in region and establish wind-field model.Fluid Mechanics Computation unit is different in wind-field model for calculating
The simulation wind speed of position；Risk-warning unit be used for calculating simulation wind speed and tower use condition library in designed wind speed of poles and towers it
Between wind speed ratio, and the warning grade table of comparisons is searched according to wind speed ratio, determines the typhoon warning grade of survey region.
In the above-described embodiments, typhoon influence sets of lines is the basic database of typhoon early warning system, is integrated in for early period
Content in typhoon early warning system.Typhoon influence sets of lines includes Power Transmission Line GIS distribution map, transmission line of electricity in high wind region
Locate surface data, tower use condition library and the warning grade table of comparisons, wherein, Power Transmission Line GIS distribution map includes transmission line of electricity
Corridor circuit distribution situation is unfolded according to overhead line structures coordinate on administrative division map.It is distributed according to Power Transmission Line GIS
Figure and typhoon situation and solar or lunar halo radius size can draw a circle to approve early warning range, and numerical simulation is carried out so as to selected
Survey region.In addition, by that can be irised out by typhoon influence in the typhoon data investigation to Power Transmission Line GIS distribution map of simulation
Shaft tower.It should be added that line corridor just refers to that transmission line of electricity takes up an area in itself with immediately below transmission line of electricity in fact.
Surface data is the surface data taken up an area immediately below transmission line of electricity at transmission line of electricity, include digital terrain elevation with
Ground mulching data.Surface data at transmission line of electricity is integrated into wind-field model by the embodiment of the present invention when establishing wind-field model
In, influence of the earth's surface degree of roughness to wind speed, wind direction can be reduced, improves the fidelity of wind-field model.Tower use condition library
Comprising transmission line of electricity technical parameter, wire type, tower including circuit exhale high, design wind speed and span etc..Warning grade pair
It is the table for embodying correspondence between typhoon warning grade and wind speed ratio according to table, it, can be in the early warning according to wind speed ratio
Search corresponding with wind speed ratio typhoon warning grade in the grade table of comparisons, typhoon warning grade generally include it is blue, yellow, orange and
Red level Four early warning.It should be added that ground mulching data build coverage condition for 30 meters of whole world surface vegetation.
In the above-described embodiments, typhoon data input cell includes the typhoon datacast system of meteorological department for providing
Typhoon data.Wherein, the typhoon data that typhoon datacast system provides include typhoon forecast data and typhoon real time data, platform
Wind forecast data includes the typhoon forecast path of meteorological department's forecast, force 7 wind circle prediction radius and force 10 wind circle prediction radius,
Such as future predicts radius with the typhoon forecast path of 48h, force 7 wind circle prediction radius and force 10 wind circle for 24 hours.Typhoon counts in real time
The typhoon data provided according to meteorological department observation station is referred to, latitude and longitude coordinates, central wind including center of typhoon position, seven grades
Solar or lunar halo surveys radius and force 10 wind circle actual measurement radius, and the typhoon real time data real-time update.
The typhoon data that above-mentioned meteorological department provides are to input the primary data of wind-field model；In addition, utilize meteorological department
The typhoon data of offer, it may be determined that the high wind region after Landed Typhoon, so as to be drawn a circle to approve with reference to Power Transmission Line GIS distribution map
Survey region.Survey region is passed through for typhoon and the high wind region equipped with transmission line of electricity, is that typhoon needs key protection when passing through
Region, specifically can according to Power Transmission Line GIS distribution map, typhoon forecast path, typhoon solar or lunar halo radius draw a circle to approve.
Above-mentioned typhoon data input cell further includes the self-built typhoon data observation system of grid company, which sees
Examining system is used to provide the wind speed and direction in survey region.Specifically, it is self-built to include grid company for typhoon data observation system
Weather radar and ultrasonic anemobiagraph, wherein, weather radar is set along transmission line of electricity, for being patrolled in short term in survey region
Observation is returned, it is vertical to the wind speed of 300m height, wind direction and local three-dimensional to obtain ground in survey region by data inversion mode
Body wind field, wherein local 3 D stereo wind field can be the local 3 D stereo wind field of 4km ranges.Ultrasonic anemobiagraph is mainly arranged
On the typical shaft tower of transmission line of electricity, for obtaining wind speed, wind direction and the pulsation in the survey region apart from ground 10m height
Parameter.The typhoon data (wind speed and direction) that typhoon data observation system provides for the typhoon data that provide meteorological department into
Row is corrected, and makes the wind regime in wind-field model and the wind regime in reality basically identical, so as to enable established wind-field model base
This truly reflects the typhoon situation of survey region.In addition, the typhoon data that typhoon data observation system provides also are used as wind
The boundary condition of field model, Fluid Mechanics Computation unit are used in calculating simulation wind speed.
In the above-described embodiments, the platform that wind-field model generation unit is provided according to the typhoon datacast system of meteorological department
Wind predicted path, force 7 wind circle radius, force 10 wind circle radius, the latitude and longitude coordinates of center of typhoon position and central wind determine by force
Wind region.After determining high wind region, wind-field model generation unit is determined according to Power Transmission Line GIS distribution map positioned at high wind region
Transmission line of electricity, and survey region is drawn a circle to approve according to typhoon forecast path and typhoon solar or lunar halo radius.It should be noted that after Landed Typhoon
Typhoon forecast path, force 7 wind circle radius, force 10 wind circle radius, the latitude and longitude coordinates of center of typhoon position and central wind be with
Time change, therefore, the size and location of survey region is also variation, is not unalterable.Wind-field model generation is single
After member delineation survey region, according to surface data at transmission line of electricity, based on computational fluid dynamics (Computational
Fluid Dynamics, hereinafter referred to as CFD) technology establishes wind-field model, and which includes the earth's surface in survey region
Model.
Referring to Fig. 2, Fig. 2 is the wind-field model that wind-field model generation unit is established, which can regard six as
Face body Model, wherein, the bottom surface of hexahedron model is terrain model, is according to the digital terrain elevation and earth's surface in survey region
Cover what data were established, other faces are air, air boundary using measure wind speed, wind direction as boundary and primary condition into
Row calculates；Fig. 2 intermediate cams shape label is the measuring wind speed point inside wind-field model, and circular mark is the wind speed on wind-field model boundary
Measurement point.The typhoon data that meteorological department provides are the primary datas inputted in wind-field model, and the typhoon data of grid company are seen
Typhoon data of the typhoon data (wind speed and direction) that examining system provides for providing meteorological department are modified, and make wind field mould
Wind speed profile figure consistent with measured data, to be used from the suitable wind-field model of foundation, the wind field established with toilet are formed in type
Model can truly reflect the typhoon situation of survey region substantially.
Fluid Mechanics Computation unit, also referred to as CFD units, using the method for finite element, to the wind field mould in survey region
Type carries out FEM meshing and calculates the different corresponding simulation wind speed of finite element grid.Finite element grid can be according to wind
The divisions such as size, the precision needs of field model.Illustratively, the wind-field model in survey region is set as 50m resolution ratio
The calculating grid of (50m multiply 50m be dimensioned to a FEM calculation grid).Fluid Mechanics Computation unit utilizes grid certainly
Parallel off technology and parallel computing, cooperation digital terrain elevation (DEM) and global 30 meters of ground mulching data, to survey region
Interior wind-field model carries out numerical simulation.During simulation, using the wind speed and direction data of meteorological department's offer as primary condition, and not
The disconnected observed result tested oneself using grid company in multiple point positions is verified and is corrected to wind-field model, is formed and each ventilation measuring point
The consistent wind speed profile figure of measured data.Illustratively, please continue to refer to Fig. 2, it is assumed that wind-field model is a hexahedron mould
Type, the bottom surface of the hexahedron model is terrain model, and other faces are air, is drawn in such a space using finite element technique
Subnetting lattice, air boundary are calculated using the wind speed, the wind direction that measure as boundary and primary condition, are ground by calculating
The simulation wind speed of region different location is studied carefully, so as to obtain real-time prediction result, 3h forecast results and 48h forecast results：A, it studies
Wind speed and direction data at each base shaft tower in region, including 10min average winds and real-time fluctuating wind；B, divide 16 wind direction sectors, from
The orographic effect factor of middle extraction wind speed, forms orographic effect factor data library.
After the simulation wind speed for obtaining survey region different location is calculated in Fluid Mechanics Computation unit, Risk-warning unit root
According to above-mentioned simulation wind speed, the wind speed ratio between designed wind speed of poles and towers in calculating simulation wind speed and tower use condition library.Meter
After calculating wind speed ratio, the typhoon warning grade table of comparisons being stored in typhoon influence sets of lines is searched according to the wind speed ratio,
According to the correspondence between wind speed ratio and typhoon warning grade, the typhoon warning grade of survey region, typhoon early warning are drawn a circle to approve
Grade is respectively blue, yellow, orange and red level Four early warning.According to the typhoon warning grade, can realize to the platform by transmission line of electricity
Wind carries out fine early warning, reduces the broken string of the falling tower risk of transmission line of electricity.
You need to add is that the simulation wind speed obtained is calculated using Fluid Mechanics Computation unit, with tower use condition library
In designed wind speed of poles and towers compared, when simulate wind speed be greater than or equal to designed wind speed of poles and towers when, can also determine power transmission line
There is the broken string of falling tower risk in road.
To sum up, when carrying out typhoon early warning to transmission line of electricity using typhoon early warning system provided in an embodiment of the present invention,
Since the typhoon data that the data that the typhoon observation system of grid company provides can constantly provide meteorological department carry out school
It tests and corrects, simultaneously because being also integrated into the surface data at transmission line of electricity in survey region in wind-field model, therefore this hair
Wind-field model high resolution that bright embodiment is established, fidelity original text, can directly reflect power transmission line corridor and typhoon substantially
Situation.Moreover, it is realized using Fluid Mechanics Computation unit and Risk-warning unit to base shaft tower position every in survey region
Wind speed accurately calculate and typhoon warning grade, it is achieved thereby that carrying out fine early warning by the typhoon of transmission line of electricity, reduce
The broken string of the falling tower risk of transmission line of electricity.In addition, by the typhoon data investigation to Power Transmission Line GIS distribution map of simulation, may be used also
To iris out impacted shaft tower, so as to carry out key protection to these shaft towers, the broken string of the falling tower risk of transmission line of electricity is further reduced.
In the above-described embodiments, it (is the group of DEM and ground mulching data to obtain terrain factor to obtain surface data
Close) to the affecting parameters of wind speed, this affecting parameters is the analogue value.Since the analogue value is by positions all in survey region
What the wind speed and direction put was calculated, therefore, the orographic effect factor data library formed according to terrain factor, for
Typhoon afterwards carries out preliminary early warning, and provides wind speed foundation for the disaster caused by a windstorm check of falling Deethanizer design.In addition, preliminary early warning can direct handle
Measured value is multiplied by the orographic effect factor, provides primary Calculation as a result, primary Calculation process is quickly and substantially accurate, therefore can
Giving warning in advance, reducing the time of follow-up typhoon early warning and reducing typhoon early warning cost.
Referring to Fig. 3, on the basis of above-described embodiment, the embodiment of the present invention additionally provides a kind of typhoon of transmission line of electricity
Method for early warning, the typhoon method for early warning include：
Step 10, it provides and one is stored with Power Transmission Line GIS distribution map, surface data, tower use condition at transmission line of electricity
Library and the typhoon influence sets of lines of the warning grade table of comparisons；
Step 20, typhoon data input cell provides typhoon data；
Step 30, wind-field model generation unit is ground according to the Power Transmission Line GIS distribution map and typhoon data delineation
Study carefully region, and wind-field model is established according to surface data at the transmission line of electricity of the survey region, the survey region is typhoon
By and equipped with transmission line of electricity high wind region；
Step 40, Fluid Mechanics Computation unit calculates the simulation wind speed of different location in the wind-field model；
Step 50, the shaft tower that Risk-warning unit is used to calculate in the simulation wind speed and the tower use condition library is set
The wind speed ratio between wind speed is counted, and the warning grade table of comparisons is searched according to the wind speed ratio, determines the research area
The typhoon warning grade in domain.
In above-mentioned typhoon method for early warning, typhoon influence sets of lines, typhoon data input cell, wind-field model generation are single
The composition and function of member, Fluid Mechanics Computation unit and Risk-warning unit may refer to above-mentioned to the implementation of typhoon early warning system
Corresponding description in example, details are not described herein.
When carrying out typhoon early warning to transmission line of electricity using typhoon method for early warning provided in an embodiment of the present invention, due to power grid public affairs
The typhoon data that the data that the typhoon observation system of department provides can constantly provide meteorological department are verified and are corrected, together
When since also the surface data at transmission line of electricity in survey region is integrated into wind-field model, the embodiment of the present invention is built
Vertical wind-field model high resolution, fidelity are high, can directly reflect the situation of power transmission line corridor and typhoon substantially.Moreover,
It is realized using Fluid Mechanics Computation unit and Risk-warning unit to accurately being counted per the wind speed of base shaft tower position in survey region
Calculation and typhoon warning grade it is achieved thereby that carrying out fine early warning by the typhoon of transmission line of electricity, reduce transmission line of electricity
The broken string of falling tower risk.In addition, by the typhoon data investigation to Power Transmission Line GIS distribution map of simulation, can also iris out impacted
Shaft tower so as to carry out key protection to these shaft towers, further reduces the broken string of the falling tower risk of transmission line of electricity.
In above-mentioned typhoon method for early warning, the typhoon datacast system of typhoon data input cell including meteorological department and
The typhoon data observation system of grid company, the typhoon data that typhoon data input cell provides include typhoon datacast system
The typhoon data that the typhoon data and typhoon data observation system of offer provide, wherein, the platform that typhoon datacast system provides
Wind data includes：Typhoon forecast path, force 7 wind circle prediction radius and force 10 wind circle prediction radius and the typhoon observed in real time
Latitude and longitude coordinates, central wind, force 7 wind circle actual measurement radius and the force 10 wind circle actual measurement radius of center.Typhoon data observation
The typhoon data that system provides include the wind speed and direction in survey region.
In above-mentioned typhoon method for early warning, typhoon data observation system includes the weather radar set along transmission line of electricity and surpasses
Sound anemobiagraph；The wind speed and direction in the survey region that typhoon data observation system provides includes the institute that weather radar provides
Ground is stated in survey region to the wind speed of 300m height, wind direction and local 3 D stereo wind field；And ultrasonic anemobiagraph provides
The survey region in wind speed, wind direction and fluctuating parameter apart from ground 10m height.
In above-mentioned typhoon method for early warning, surface data includes digital terrain elevation and ground mulching number at transmission line of electricity
According to wind-field model includes the ground model established according to the digital terrain elevation in the survey region and ground mulching data.
It can really reflect roughness of ground surface by establishing ground model, improve the fidelity of wind-field model, be calculated so as to improve
Simulation wind speed precision.
Fig. 2 and Fig. 4 are please referred to, in above-mentioned typhoon method for early warning, Fluid Mechanics Computation unit calculates the wind-field model
The simulation wind speed of middle different location specifically includes：
Step 41, it is assumed that wind-field model is hexahedron model, and the bottom surface of hexahedron model is ground model, and top surface is gradient
Wind height initial surface；Using finite element technique grid division in such a space, air boundary with measure wind speed,
Wind direction is as boundary and primary condition.
Step 42, gradient level initial surface more than position is set as horizontal wind direction to constrain, by the bottom of hexahedron model
Four sides between face and top surface are set as boundary.It is ground in model bottom surface since roughness of ground surface is very big on wind field influence
The boundary that shape elevation and ground mulching data are formed；It is gradient level more than position in model top surface, is set as horizontal wind direction
Constraint；It is initial wind speed and direction boundary condition in remaining four face of model.
Step 43, FEM meshing is carried out to boundary.Illustratively, please continue to refer to Fig. 2, it is every that four boundaries are located at
There is n measuring wind speed point (n1*n2) on a boundary, and measuring wind speed point is circular mark position in Fig. 2, and wherein n1 is on vertical direction
Measuring wind speed point, n2 be horizontal direction on measuring wind speed point.It is n1*n2 small sections so by boundary demarcation, each piece
Section coordinate point data where area's primary condition uses.
Step 44, the simulation wind speed of each finite element grid is calculated respectively using Fluid Mechanics Computation technology.Specifically it is based on
CFD Computing Principles, and numerical value is carried out to the wind field in entire survey region from parallel off technology and parallel computing using grid
Simulation calculates, and solves wind field.Further, it is also possible to be checked to result of calculation, reduce phantom error.Specifically, figure is please referred to
2, if there is m measuring wind speed point (m1*m2) inside wind-field model, the position of measuring wind speed point is the position of figure intermediate cam shape label
It puts.After the completion of extraction calculates, the calculating data of m point of space interior will calculate data and be compared with measurement data, calculated imitative
True error.
Wherein, α, β are the weights of size and Orientation error,For the measured value of i-th, j points,For the imitative of i-th, j points
True value.If phantom error is met the requirements, it is believed that simulation result is correct.If phantom error is unsatisfactory for requiring, analytical error production
Reason is given birth to, calculating is re-started after correction model.
Each embodiment in this specification is described by the way of progressive, identical similar portion between each embodiment
Point just to refer each other, and the highlights of each of the examples are difference from other examples.Especially for equipment reality
For applying example, since it is substantially similar to embodiment of the method, so describing fairly simple, related part is referring to embodiment of the method
Part explanation.
One of ordinary skill in the art will appreciate that realizing all or part of flow in above-described embodiment method, being can be with
Relevant hardware is instructed to complete by computer program, the program can be stored in computer read/write memory medium
In, the program is when being executed, it may include such as the flow of the embodiment of above-mentioned each method.Wherein, the storage medium can be magnetic
Dish, CD, read-only memory (Read-Only Memory, ROM) or random access memory (Random Access
Memory, RAM) etc..
The above description is merely a specific embodiment, but protection scope of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can readily occur in change or replacement, should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (8)
1. the typhoon early warning system of a kind of transmission line of electricity, which is characterized in that the typhoon early warning system includes：
Typhoon influence sets of lines, for storing transmission line of electricity Distribution GIS distribution map, surface data at transmission line of electricity,
Tower use condition library and the warning grade table of comparisons；
Typhoon data input cell, for providing typhoon data；
The wind-field model generation unit being connect respectively with the typhoon influence sets of lines and the typhoon data input cell signal,
The wind-field model generation unit draws a circle to approve survey region, and root according to the Power Transmission Line GIS distribution map and the typhoon data
Wind-field model is established according to surface data at the transmission line of electricity of the survey region, the survey region passes through for typhoon and equipped with defeated
The high wind region of electric line；
The Fluid Mechanics Computation unit being connect with the wind-field model generation unit signal, the Fluid Mechanics Computation unit are used for
Calculate the simulation wind speed of different location in the wind-field model；
The Risk-warning unit being connect respectively with the Fluid Mechanics Computation unit and the typhoon influence sets of lines signal, it is described
Risk-warning unit is used to calculate the wind between the designed wind speed of poles and towers in the simulation wind speed and the tower use condition library
Fast ratio, and the warning grade table of comparisons is searched according to the wind speed ratio, determine typhoon early warning of the survey region etc.
Grade.
2. the typhoon early warning system of transmission line of electricity according to claim 1, which is characterized in that the typhoon data input is single
Member includes the typhoon datacast system of meteorological department and the typhoon data observation system of grid company, wherein,
The typhoon datacast system predicts half for providing typhoon forecast path, force 7 wind circle prediction radius and force 10 wind circle
Diameter and the latitude and longitude coordinates of center of typhoon position observed in real time, central wind, force 7 wind circle actual measurement radius and force 10 wind circle
Survey radius；
The typhoon data observation system is used to provide wind speed, the wind direction in the survey region.
3. the typhoon early warning system of transmission line of electricity according to claim 2, which is characterized in that the typhoon data observation system
System includes the weather radar set along transmission line of electricity and the ultrasonic anemobiagraph being arranged on shaft tower, wherein,
The weather radar is vertical to the wind speed of 300m height, wind direction and local three-dimensional for obtaining ground in the survey region
Body wind field；
The ultrasound anemobiagraph is used to obtain wind speed, wind direction and the fluctuating parameter in the survey region apart from ground 10m height.
4. the typhoon method for early warning of a kind of transmission line of electricity, which is characterized in that the typhoon method for early warning includes：
It provides and one is stored with Power Transmission Line GIS distribution map, surface data, tower use condition library and warning grade at transmission line of electricity
The typhoon influence sets of lines of the table of comparisons；
Typhoon data input cell provides typhoon data；
Wind-field model generation unit draws a circle to approve survey region, and root according to the Power Transmission Line GIS distribution map and the typhoon data
Wind-field model is established according to surface data at the transmission line of electricity of the survey region, the survey region passes through for typhoon and equipped with defeated
The high wind region of electric line；
Fluid Mechanics Computation unit calculates the simulation wind speed of different location in the wind-field model；
Risk-warning unit be used for calculate it is described simulation wind speed and the tower use condition library in designed wind speed of poles and towers between
Wind speed ratio, and the warning grade table of comparisons is searched according to the wind speed ratio, determines that the typhoon of the survey region is pre-
Alert grade.
5. the typhoon method for early warning of transmission line of electricity according to claim 4, which is characterized in that the typhoon data input is single
Member includes the typhoon datacast system of meteorological department and the typhoon data observation system of grid company；The typhoon data input
The typhoon data that unit provides include：
Typhoon forecast path, force 7 wind circle prediction radius and the force 10 wind circle prediction half that the typhoon datacast system provides
Diameter and the latitude and longitude coordinates of center of typhoon position observed in real time, central wind, force 7 wind circle actual measurement radius and force 10 wind circle
Survey radius；
The wind speed and direction in the survey region that the typhoon data observation system provides.
6. the typhoon method for early warning of transmission line of electricity according to claim 5, which is characterized in that the typhoon data observation system
System includes the weather radar set along transmission line of electricity and ultrasonic anemobiagraph；
The wind speed and direction in the survey region that typhoon data observation system provides includes：
Ground is to the wind speed of 300m height, wind direction and local 3 D stereo in the survey region that the weather radar provides
Wind field；
Wind speed, wind direction and fluctuating parameter in the survey region that the ultrasound anemobiagraph provides apart from ground 10m height.
7. the typhoon method for early warning of transmission line of electricity according to claim 4, which is characterized in that earth's surface at the transmission line of electricity
Data include digital terrain elevation and ground mulching data, the wind-field model include according in the survey region digitally
The ground model that shape elevation and ground mulching data are established.
8. the typhoon method for early warning of transmission line of electricity according to claim 4, which is characterized in that Fluid Mechanics Computation unit meter
The simulation wind speed for calculating different location in the wind-field model includes：
Assuming that wind-field model is hexahedron model, the bottom surface of the hexahedron model is ground model, and top surface is gradient level
Initial surface；
Gradient level initial surface more than position is set as horizontal wind direction constraint, it will be between the bottom surface and top surface of hexahedron model
Four sides be set as boundary；
FEM meshing is carried out to the boundary；
Calculate the simulation wind speed of each finite element grid respectively using Fluid Mechanics Computation technology.
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