CN108363882A - A kind of mountain area Transmission Line Design wind speed projectional technique based on power NO emissions reduction pattern - Google Patents
A kind of mountain area Transmission Line Design wind speed projectional technique based on power NO emissions reduction pattern Download PDFInfo
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Abstract
The invention discloses a kind of mountain area Transmission Line Design wind speed projectional technique based on power NO emissions reduction pattern, includes the following steps：According to computer performance and required precision, resolution ratio and simulated domain range are determined, analysis is localized to power NO emissions reduction WRF mode parameters, and power NO emissions reduction obtains the wind speed simulation result of Engineering Zone at least a year；Wind speed simulation result is interpolated into the engineering department for representing mountain segment transmission line of electricity different topographic characteristics, obtains maximum wind velocity sequence day by day；Weather station of studying and comparing, the sequence of maximum wind velocity day by day that statistics obtains the maximum wind velocity sequence day by day with the power NO emissions reduction same period, and obtained with power NO emissions reduction is selected to carry out correlation analysis, fitting obtains the correlativity between the two；Frequency analysis calculating is carried out to the maximum wind velocity over the years for weather station of studying and comparing, obtains the design wind speed that transmission line of electricity voltage class corresponds to Designed recurrence period, and according to correlativity, inquire into ENGINEERING POINT design wind speed.The present invention effectively increases mountain area Transmission Line Design wind speed value precision and reliability under conditions of meeting project progress and cost.
Description
Technical field
The present invention relates to a kind of mountain area Transmission Line Design wind speed projectional technique based on power NO emissions reduction pattern belongs to electricity
Power engineering design wind speed and wind pressure calculate technical field.
Background technology
The value of work transmission line design wind speed influences safety, economy and the applicability of work transmission line,
Its reasonable value is particularly significant.According to《Power engineering meteorology prospecting technique regulation》(DL/T5158-2012), near engineering
When there are continuous 25 years or more yearly maximum wind speed data in weather station, it can directly carry out frequency and calculate Derivation Design wind speed.However ground
Face weather station is more in developed area, city laying, and less in remote mountain areas.Wind is designed in power industry mountain area at present
Speed common method be by the corresponding wind pressure value of weather station design wind speed of studying and comparing be multiplied by mountain area wind pressure regulation coefficient (intermountain basin,
The occlusion landform regulation coefficient such as valley floor takes 0.75~0.85, air port consistent with strong wind direction to take 1.20~1.50), then inverse obtains
Go out design wind speed, i.e. wind speed maximum regulation coefficient is 1.095~1.225.This method is subjective, and different designers takes
Value is not quite similar, and inconvenience is brought to design.
According to power engineering hydrometeorology reckoner (Hubei science tech publishing house, 2010), mountain area design wind speed
Most reliable method is directly to build the place interim observation station of setting, and carry out comparative observation with the wind speed of neighbouring weather station, really
Fixed accurate conversion coefficient.However mountain area transmission line of electricity is line-shape construction, with a varied topography changeable, a line project need to be set
Design requirement, somewhat expensive could be met by setting multiple interim observation stations, and need longer interim observation time, be tended not to full
The requirement of sufficient project progress and cost control.
Invention content
In view of the deficienciess of the prior art, it is an object of the present invention to provide a kind of mountain area based on power NO emissions reduction pattern is defeated
Electric line Design Wind Speed Calculation for Electric method effectively increases mountain area transmission line of electricity and sets under conditions of meeting project progress and cost
Count wind speed value precision and reliability.
To achieve the goals above, the present invention is to realize by the following technical solutions：
A kind of mountain area Transmission Line Design wind speed projectional technique based on power NO emissions reduction pattern of the present invention, including it is following
Several steps：
Step (1)：According to computer performance and required precision, resolution ratio and simulated domain range are determined, ruler is dropped to power
The mode parameter for spending the Microphysicals of WRF patterns, land surface emissivity and planetary boundary layer is localized analysis, and power NO emissions reduction obtains
To the wind speed simulation result of Engineering Zone at least a year；The wind speed simulation result is interpolated into typical steel tower position, the allusion quotation
Sections tower position is to represent the engineering departments of mountain segment transmission line of electricity different topographic characteristics, to the wind speed of engineering department interpolation day by day
As a result it is maximized, obtains maximum wind velocity sequence day by day；
Step (2)：And data nearest away from mountain area transmission line of electricity are selected completely to study and compare weather station, statistics obtains and power drops
The maximum wind velocity sequence day by day of scale same period, and related to the sequence progress of maximum wind velocity day by day that power NO emissions reduction obtains point
Analysis, fitting obtain the correlativity between the two；
Step (3)：Frequency analysis calculating is carried out to the maximum wind velocity over the years for weather station of studying and comparing described in step (2), is obtained
Transmission line of electricity voltage class corresponds to the design wind speed of Designed recurrence period, and according to weather station maximum wind velocity and power in step (2)
Correlativity between engineering department's maximum wind velocity that NO emissions reduction obtains, the weather station design wind speed that will study and compare substitute into correlativity formula, obtain
Go out engineering department's design wind speed.
In step (1), the data that power NO emissions reduction WRF patterns use is the final analysis of data FNL of NCEP, the resolution ratio
Refer to that the data NO emissions reduction of 1 ° × 1 ° horizontal resolution of FNL is less than 1km.
In step (1), the localization analysis refers to different Microphysicals, the land surface emissivity to power NO emissions reduction WRF patterns
Sensitivity analysis is carried out with the mode parameter of planetary boundary layer, selects the parameter combination in engineering location.
Above-mentioned parameter combination selection method be：Convective Parameterization Schemes use KF schemes, microphysical processes to use
Lin etal schemes, atmospheric boundary layer use YSU schemes, land surface emissivity to use Noah schemes；Long-wave radiation scheme uses Rapid
Radiative Transfer Model schemes, shortwave radiation scheme uses Dudhia Scheme schemes, using above scheme group
It closes to FNL data into action edge NO emissions reduction.
In step (1), it refers to using apart from inverse ratio interpolation method that the wind speed simulation result, which is interpolated into typical steel tower position,
Power NO emissions reduction result is interpolated into engineering department.
In step (2), the correlativity is expressed as y=a*xn+ b, wherein x are weather station maximum wind velocity of studying and comparing, and y is
Engineering department's maximum wind velocity that power NO emissions reduction obtains, a and b are empirical coefficient.
In step (2), the weather station sequence of maximum wind velocity day by day that maximum wind velocity sequence and power NO emissions reduction obtain day by day into
Row correlation analysis refers to, using linear/curve matching and parameter Estimation come founding mathematical models, determine described in study and compare weather station most
The correlativity of big wind speed and engineering department's maximum wind velocity.
Above-mentioned parameter estimation uses least absolute deviation or least square method.
Beneficial effects of the present invention are as follows：
Using the power NO emissions reduction pattern after localization, it will fully assimilate ground, ship, radio sounding, survey general mood
The thicker final analysiss of data of FNL of the resolution ratio of the observational datas such as ball, aircraft, satellite, power NO emissions reduction to 1km × 1km even
More high spatial resolution, and power NO emissions reduction result is interpolated into engineering department using apart from inverse ratio interpolation method, reorganization obtains at least
The data of maximum wind velocity day by day in 1 year data of maximum wind velocity day by day period identical as neighbouring weather station carry out correlation analysis,
It connects and inquires into mountain area Transmission Line Design wind speed.It is defeated to effectively improve mountain area under conditions of meeting project progress and cost by the present invention
Electric line design wind speed value precision and reliability.
Description of the drawings
Fig. 1 is certain mountain area transmission line of electricity path tendency and weather station location diagram；
Fig. 2 is power NO emissions reduction Grid Nesting scheme；
Fig. 3 is at weather station B and engineering department's maximum wind velocity correlativity；
Fig. 4 is that B maximum wind velocity extreme value type Is over the years in weather station fit line chart；
Fig. 5 is that A maximum wind velocity extreme value type Is over the years in weather station fit line chart.
Specific implementation mode
To make the technical means, the creative features, the aims and the efficiencies achieved by the present invention be easy to understand, with reference to
Specific implementation mode, the present invention is further explained.
When Environmental forecasting centre (NCEP) provides for vast researcher time more, density greatly, continuity
By force, analysis of data, FNL are provided the FNL (Final Operational Analysis) for the features such as resolution ratio is higher, abundant in content again
Material has fully assimilated observational data (ground, ship, radio sounding, pilot balloon, aircraft, satellite etc.) as comprehensive as possible,
And quality control and assimilation processing have been carried out, it is widely used in the diagnostic analysis of numerical model and weather, weather.Realizing this
During invention, it is found by the applicant that if can by FNL data power NO emissions reductions to the even higher spatial resolutions of 1km × 1km,
And power NO emissions reduction result is interpolated into engineering department, it can be used as virtual interim weather station, for mountain area transmission of electricity design wind
In the reckoning of speed.
A kind of mountain area Transmission Line Design wind speed projectional technique based on power NO emissions reduction pattern utilizes moving after localization
Power NO emissions reduction pattern will fully assimilate the observational datas such as ground, ship, radio sounding, pilot balloon, aircraft, satellite
The final analysiss of data of the thicker FNL of resolution ratio, power NO emissions reduction use distance to the even higher spatial resolutions of 1km × 1km
Power NO emissions reduction result is interpolated into engineering department by inverse ratio interpolation method, and reorganization obtains the data of maximum wind velocity day by day and the neighbour of at least a year
The data of maximum wind velocity day by day in the nearly weather station identical period carry out correlation analysis, inquire into mountain area Transmission Line Design wind indirectly
Speed.
A kind of mountain area Transmission Line Design wind speed projectional technique based on power NO emissions reduction pattern of the present embodiment, including such as
Lower step：
Step (1)：Suitable resolution ratio, simulated domain range are selected, Microphysical, land to power NO emissions reduction WRF patterns
Face process and planetary boundary layer isotype parameter are localized analysis, and power NO emissions reduction obtains Engineering Zone at least a year
Wind speed simulation result；And analog result is interpolated into the typical steel tower position for representing mountain segment transmission line of electricity different topographic characteristics
(hereinafter referred to as engineering department) arranges engineering department's analog result, obtains maximum wind velocity sequence day by day；
Step (2)：And data nearest away from mountain area transmission line of electricity weather station of completely studying and comparing is selected (to have continuous 25 years or more
Yearly maximum wind speed data), statistics obtains the maximum wind velocity sequence day by day with the power NO emissions reduction same period, and with power NO emissions reduction
The obtained sequence of maximum wind velocity day by day carries out correlation analysis, and fitting obtains the correlativity between the two；
Step (3)：Frequency analysis calculating is carried out to the maximum wind velocity over the years for the weather station of studying and comparing in step (2), is obtained
Transmission line of electricity voltage class corresponds to the design wind speed of Designed recurrence period, and according to weather station maximum wind velocity and power in step (2)
Correlativity between the ENGINEERING POINT maximum wind velocity that NO emissions reduction obtains, inquires into ENGINEERING POINT design wind speed.
Below by taking certain mountain area work transmission line Design Wind Speed Calculation for Electric as an example, in conjunction with Figure of description to the preferred of the present invention
Embodiment illustrates, the following examples are only intended to illustrate the technical solution of the present invention more clearly, and cannot be limited with this
Protection scope of the present invention processed.
Certain mountain area transmission line of electricity path tendency as shown in red solid line in Fig. 1, circuit region ground elevation 1000~
1900m (1985 state height benchmark, similarly hereinafter), transmission line of electricity nearby have a weather station B, elevation 88m, along transmission line of electricity certain
There are a weather station A, elevation 1840m, weather station A and B to have 1980-2013 year calendar yearly maximum wind speed data at ENGINEERING POINT, this
Embodiment calculates the design wind speed of engineering department (at weather station A) through the above steps.(note：The actual measurement maximum wind velocity number of weather station A
Mountain area work transmission line point design wind speed precision is calculated according to for method proposed by the present invention of upchecking).Specific steps are such as
Under：
Step (100)：Initial field and lateral boundary conditions of the selection FNL as power NO emissions reduction WRF patterns, simulated domain are
22 ° 30 '~37 ° 45 ' of north latitude, east longitude 104 ° 13 '~130 ° 36 ' settings, 4 layers of nested grid, outer layer grid can provide more for internal layer
Accurate Boundary Conditions, outermost layer lattice are shown in figure away from 27km, second layer 9km, third layer 3km, innermost layer 1km, mesh generation
2.Select 4 kinds of cumulus parameterization schemes such as KF, BMJ, GD and G3, Kessler, Lin etal, WSM 3, WSM5, Ferrier
6 kinds of Microphysical schemes such as (New eta) and WSM6,3 kinds of Different Boundary Layer Parameterization sides such as YSU schemes, MYJ schemes and ACM2 schemes
Case, 3 kinds of lands such as NOAH, RUC and Pleim-Xiu face scheme carry out sensitivity analysis, obtain and are suitble to local parameter combination selection
For：Convective Parameterization Schemes use KF schemes, microphysical processes that Lin etal schemes, atmospheric boundary layer is used to use YSU
Noah schemes are respectively adopted in scheme, land surface emissivity.In addition, long-wave radiation scheme uses Rapid Radiative Transfer
Model, shortwave radiation scheme use Dudhia Scheme, using above-mentioned setting pair December 31 1 day~2012 January in 2012
Day FNL data into action edge NO emissions reduction.
Step (101)：1km × 1km power NO emissions reduction results are interpolated into weather station A (engineering department), extract engineering department
On December 31,1 day~2012 January in 2012 maximum wind velocity sequence (hereinafter referred to as sequence 1) day by day, with weather station B same time periods
The sequence of maximum wind velocity day by day (hereinafter referred to as sequence 2) carry out correlation analysis, be fitted sequence 1 and sequence 2 correlativity, see Fig. 3.
Step (102)：The liftoff 10m high 10min that meet for 100 years one that weather station B and weather station A is calculated using extreme value type I are put down
Equal maximum wind velocity, fits that knot fruit is as shown in Figure 4, Figure 5, by fit knot fruit can obtain weather station B and weather station A meet within 100 years one from
The 10m high 10min maximum wind velocities that are averaged in ground are respectively 21.6m/s and 31.1m/s.
Step (103)：According to the correlativity of fitting sequence 1 and sequence 2 in step (101), at weather station B and engineering department
Maximum wind velocity correlativity is that (y indicates that engineering department's maximum wind velocity, x indicate most strong wind at weather station B to y=1.3164*x-0.6225
Speed).Know that weather station B meets liftoff 10m high 10min for 100 years one and is averaged maximum wind velocity as 21.6m/s by step 102), thus pushes away
Suan get engineering departments meet liftoff 10m high 10min for 100 years one and are averaged maximum wind velocity as 27.8m/s.
According to current power industry mountain area design wind speed frequently with method, the air port wind speed consistent with strong wind direction be most
Big regulation coefficient is 1.095~1.225, is by the 100 years one liftoff 10m high 10min of chance of the weather station B maximum wind velocities that are averaged
The engineering department 100 years one that 21.6m/s is calculated meets liftoff 10m high 10min and is averaged maximum wind velocity ranging from 23.7m/s~26.5m/s.
By, with engineering department's maximum wind velocity correlativity, calculating to obtain engineering department 100 at the weather station B that is obtained based on power NO emissions reduction result
Be averaged in the one liftoff 10m high 10min of chance of year maximum wind velocity ranging from 27.8m/s.Engineering department counts most strong wind by surveying weather station A
The 100 years one liftoff 10m high 10min of chance that fast series of statistical obtains are averaged maximum wind velocity as 31.1m/s.According to above-mentioned analysis, base
In engineering department's design wind speed actual value close compared with empirical coefficient method piece-root grafting that power NO emissions reduction result obtains.
In conclusion the mountain area Transmission Line Design wind speed based on power NO emissions reduction pattern of the various embodiments described above of the present invention
Projectional technique, including：Suitable resolution ratio, simulated domain range are selected, Microphysical, land face to power NO emissions reduction WRF patterns
Process and planetary boundary layer isotype parameter are localized analysis, and power NO emissions reduction obtains that mountain segment power transmission line can be represented
The wind speed simulation of typical steel tower position (hereinafter referred to as engineering department) at least a year of road different topographic characteristics as a result, to analog result into
Row arranges, and obtains maximum wind velocity sequence day by day；And data nearest away from mountain area transmission line of electricity weather station of completely studying and comparing is selected (to have company
Continuous 25 years or more yearly maximum wind speed data), statistics obtains the maximum wind velocity sequence day by day with the power NO emissions reduction same period, and
The sequence of maximum wind velocity day by day obtained with power NO emissions reduction carries out correlation analysis, and fitting obtains the correlativity between the two；According to
Study and compare weather station maximum wind velocity over the years carry out frequency analysis calculating, obtain transmission line of electricity voltage class and correspond to Designed recurrence period
Design wind speed, and the correlativity between the ENGINEERING POINT maximum wind velocity obtained according to weather station maximum wind velocity and power NO emissions reduction, push away
Seek ENGINEERING POINT design wind speed.The mountain area Transmission Line Design wind speed projectional technique based on power NO emissions reduction pattern, can overcome
Being multiplied by mountain area wind pressure regulation coefficient using weather station wind pressure value of studying and comparing, counter to push away design wind speed reasonability low, random strong；Directly exist
It builds place and interim observation station somewhat expensive is set, and need longer interim observation time, tend not to meet project progress
The shortcomings of with the requirement of cost control.The present invention effectively improves mountain area power transmission line under conditions of meeting project progress and cost
Road design wind speed value precision and reliability.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (8)
1. a kind of mountain area Transmission Line Design wind speed projectional technique based on power NO emissions reduction pattern, which is characterized in that including with
Under several steps：
Step (1)：According to computer performance and required precision, resolution ratio and simulated domain range are determined, to power NO emissions reduction WRF
The mode parameter of the Microphysical of pattern, land surface emissivity and planetary boundary layer is localized analysis, and power NO emissions reduction obtains work
The wind speed simulation result of journey region at least a year；The wind speed simulation result is interpolated into typical steel tower position, typical case's iron
Tower position is to represent the engineering departments of mountain segment transmission line of electricity different topographic characteristics, to the wind speed of engineering department interpolation result day by day
It is maximized, obtains maximum wind velocity sequence day by day；
Step (2)：And data nearest away from mountain area transmission line of electricity are selected completely to study and compare weather station, statistics obtains and power NO emissions reduction
The maximum wind velocity sequence day by day of same period, and the sequence of maximum wind velocity day by day obtained with power NO emissions reduction carries out correlation analysis,
Fitting obtains the correlativity between the two；
Step (3)：Frequency analysis calculating is carried out to the maximum wind velocity over the years for weather station of studying and comparing described in step (2), is transmitted electricity
Line voltage distribution grade corresponds to the design wind speed of Designed recurrence period, and drops ruler according to weather station maximum wind velocity in step (2) and power
The correlativity between obtained engineering department's maximum wind velocity is spent, the weather station design wind speed that will study and compare substitutes into correlativity formula, must go to work
Design wind speed at journey.
2. the mountain area Transmission Line Design wind speed projectional technique according to claim 1 based on power NO emissions reduction pattern,
It is characterized in that, in step (1), the data that power NO emissions reduction WRF patterns use is the final analysis of data FNL of NCEP, the resolutions
Rate refers to that the data NO emissions reduction of 1 ° × 1 ° horizontal resolution of FNL is less than 1km.
3. the mountain area Transmission Line Design wind speed projectional technique according to claim 1 based on power NO emissions reduction pattern,
It is characterized in that, in step (1), the localization analysis refers to different Microphysicals, the land surface emissivity to power NO emissions reduction WRF patterns
Sensitivity analysis is carried out with the mode parameter of planetary boundary layer, selects the parameter combination in engineering location.
4. the mountain area Transmission Line Design wind speed projectional technique according to claim 1 based on power NO emissions reduction pattern,
It is characterized in that, the selection method of the parameter combination is：Convective Parameterization Schemes use KF schemes, microphysical processes to use
Lin etal schemes, atmospheric boundary layer use YSU schemes, land surface emissivity to use Noah schemes；Long-wave radiation scheme uses Rapid
Radiative Transfer Model schemes, shortwave radiation scheme uses Dudhia Scheme schemes, using above scheme group
It closes to FNL data into action edge NO emissions reduction.
5. the mountain area Transmission Line Design wind speed projectional technique according to claim 1 based on power NO emissions reduction pattern,
It is characterized in that, in step (1), it refers to using apart from inverse ratio interpolation method that the wind speed simulation result, which is interpolated into typical steel tower position,
Power NO emissions reduction result is interpolated into engineering department.
6. the mountain area Transmission Line Design wind speed projectional technique according to claim 1 based on power NO emissions reduction pattern,
It is characterized in that, in step (2), the correlativity is expressed as y=a*xn+ b, wherein x are weather station maximum wind velocity of studying and comparing, and y is
Engineering department's maximum wind velocity that power NO emissions reduction obtains, a and b are empirical coefficient.
7. the mountain area Transmission Line Design wind speed projectional technique according to claim 1 based on power NO emissions reduction pattern,
Be characterized in that, in step (2), the weather station sequence of maximum wind velocity day by day that maximum wind velocity sequence and power NO emissions reduction obtain day by day into
Row correlation analysis refers to, using linear/curve matching and parameter Estimation come founding mathematical models, determine described in study and compare weather station most
The correlativity of big wind speed and engineering department's maximum wind velocity.
8. the mountain area Transmission Line Design wind speed projectional technique according to claim 7 based on power NO emissions reduction pattern,
It is characterized in that, the parameter Estimation uses least absolute deviation or least square method.
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| CN112417638A (en) * | 2020-09-04 | 2021-02-26 | 浙江省气象科学研究所 | Strong wind fine analysis method for overhead transmission line in offshore area |
| CN112632799A (en) * | 2021-01-06 | 2021-04-09 | 国核电力规划设计研究院有限公司 | Method and device for valuing design wind speed of power transmission line |
| CN112632799B (en) * | 2021-01-06 | 2024-01-26 | 国核电力规划设计研究院有限公司 | Method and device for evaluating design wind speed of power transmission line |
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