CN104537427A - Method for selecting address of converging booster station of offshore wind plant - Google Patents
Method for selecting address of converging booster station of offshore wind plant Download PDFInfo
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Abstract
The invention relates to a method for selecting an address of a converging booster station of an offshore wind plant. The method comprises the steps of connecting and grouping wind generating sets by wires according to an arrangement diagram of the wind generating sets given by a user, establishing a mark of each segment of current collection feeder line, and selecting the wind generating set of each group of wind generating sets closest to a converging point as an access point of the group of wind generating sets; according to initial conditions of different offshore wind plants, selecting a target to be optimized, establishing an objective function, obtaining the optimal solution of the objective function so as to minimum the total investment of a wind plant electric system, and connecting the converging booster station of the offshore wind plant with the access point of each group of wind generating sets by a sea cable; and judging whether automatically generated current collection system wiring is crossing, if yes, adjusting by hands to replace the crossing straight lines with fold lines.
Description
Technical field
The invention belongs to marine wind electric field technical field, particularly relate to the site selecting method that a kind of marine wind electric field collects booster stations.
Background technology
Wind resource progressively becomes a kind of regenerative resource ripe, the most real except hydropower.Relative to land wind energy turbine set, Oversea wind power generation has the advantage of its uniqueness: wind-resources situation is more excellent, and it is little that marine wind electric field accounts for land surface, and power generation situation is not substantially by the influence of topography; Setting up wind energy turbine set at sea means the visual impact of wind energy turbine set surrounding landscape minimum, also can not produce very large noise pollution; Wind energy can not be stopped by the woods or buildings, and the wind energy therefore arriving blade of wind-driven generator can reach maximum, and then makes aerogenerator operate in good duty; The design of jumbo offshore wind turbine, transport, installation can realize, and these Large Copacity wind power generating set improve the scale etc. of wind energy turbine set.Due to the advantage of these uniquenesses, marine wind electric field has become the study hotspot of current regenerative resource, and Large Scale Offshore Wind Farm will become an important directions of following Wind Power Utilization simultaneously.Collect the important step that booster stations addressing is built as marine wind electric field, directly to the network structure of following wind energy turbine set, reliability is powered and economy has an impact.
In prior art, the subject matter that current domestic marine wind electric field collects booster stations addressing existence is that on the one hand, the many air line distance according to source point and terminal of objective function of addressing optimization is tried to achieve.Due in the engineering of reality, it is not directly be connected entirely that marine wind electric field collects between booster stations and wind power generating set, connects even if the wind power generating set be directly connected also may not be straight line.So the actual connected mode that the objective function of linear programming at present and marine wind electric field collect between booster stations and wind power generating set is mutually far short of what is expected.On the other hand, in existing site selecting method, or the work of planning personnel is various, and need to get rid of in advance much impossible factors, for maritime environment, the possible position collecting booster stations is not easy to determine; Or in the slip ring system of wind energy turbine set, extra large cable intersects, and the connection between wind power generating set does not have certain rule, causes very large difficulty to the optimization of later stage slip ring system.
Summary of the invention
In sum, necessaryly a kind of simple and controlled marine wind electric field is provided to collect the site selecting method of booster stations.
A kind of marine wind electric field collects the site selecting method of booster stations, comprise the following steps: the wind power generating set arrangenent diagram provided according to user, with line segment, each wind power generating set is connected grouping, and set up the mark of every section of current collection feeder line, select in each grouping from the access point of the nearest wind power generating set of Rendezvous Point as this group wind power generating set; According to the starting condition of different marine wind electric field, select required optimization aim, set up objective function, try to achieve the optimum solution of objective function, make the overall cost of ownership of wind energy turbine set electrical system minimum, and connect with extra large cable the access point that marine wind electric field collects booster stations and each group of wind power generating set; Judge the slip ring system wiring automatically generated occurs whether occurring intersecting, and intersects if occur, manually adjust and will occur that the straight line broken line intersected replaces.
Relative to prior art, marine wind electric field provided by the invention collects the site selecting method of booster stations, for the difference of different marine wind electric field starting condition, provide the addressing scheme that multiple marine wind electric field collects booster stations, be applicable to multivariant design and optimization than choosing.Further, manually determining by having one before determining addressing the link that wind power generating set is divided into groups, the controllability that deviser connects up to slip ring system can be increased, improve the engineering adaptability that marine wind electric field addressing is optimized.
Accompanying drawing explanation
Fig. 1 is the process flow diagram that marine wind electric field provided by the invention collects the site selecting method of booster stations.
Embodiment
Also in conjunction with specific embodiments technical scheme of the present invention is stated further in detail according to Figure of description below.
Refer to Fig. 1, the site selecting method that marine wind electric field provided by the invention collects booster stations comprises the steps:
Step 1, according to the wind power generating set arrangenent diagram manually provided, with line segment, each wind power generating set is connected grouping, and set up the mark of every section of current collection feeder line, select in each grouping from the access point of the nearest wind power generating set of Rendezvous Point as this group wind power generating set;
Step 2, according to the starting condition of different marine wind electric field, selects required optimization aim, set up objective function, try to achieve the optimum solution of objective function, make the overall cost of ownership of wind energy turbine set electrical system minimum, and connect with extra large cable the access point that marine wind electric field collects booster stations and each group of wind power generating set;
Step 3, judges the slip ring system wiring automatically generated occurs whether occurring intersecting, and intersects if occur, manually adjusts and will occur that the straight line broken line intersected replaces.
In step 1, described aerogenerator arrangenent diagram can adopt CAD drawing form.Each wind power generating set connected in the process of grouping, described line scan pickup coil side point coordinate is identical with connected wind power generating set coordinate.
Wind power generating set arrangenent diagram can the form of CAD drawing provide, and often organizes wind power generating set number by the quantitative limitation of extra large cable current-carrying, by manually providing rational wind power generating set packet mode.After being divided into group, select from the access point of the nearest wind power generating set of Rendezvous Point as this group wind power generating set in each grouping, thus calculated amount is little, consuming time short, realistic engineer applied.
Concrete, if aerogenerator packet count is
, by all wind power generating set packet numberings be
, with extra large cable, the wind power generating set between each group is connected together.To the connection sea cable label often organized in wind power generating set, rule is as follows: establish grouping
in have
platform wind power generating set, from the extra large cable that the access point of this wind power generating set is directly connected, the extra large cable of this group is labeled as successively
,
...,
.After marine wind electric field collects the position generation of booster stations, wind power generating set is collected booster stations by access point and marine wind electric field and is connected, and connects extra large cable and is labeled as
.
In step 2, specifically comprise the steps:
Step 2.1, the optimization aim needed for selection.According to the difference of the starting condition such as wind power generating set layout, sea situation, extra large cable unit price of different marine wind electric field, described optimization aim can comprise minimum, the middle pressure of overall cost of ownership of high pressure and middle pressure sea cable and minimum, the middle pressure of high-pressure undersea cable total length extra large cable total length is minimum, high-pressure undersea cable total length is minimum, minimum, the extra large cable gross investment of circuit total losses and circuit runtime total losses sum minimum etc. in one.
Concrete, the overall cost of ownership of marine wind electric field electrical system is divided into marine wind electric field to collect cost of investment three aspect of booster stations cost of investment, wind power generating set cost of investment, extra large cable.For different marine wind electric fields, the cost of investment of extra large cable is only had to be change, so using the main standard of the cost of investment of extra large cable as booster stations addressing with the connected mode difference collecting booster stations site and slip ring system.
Wherein, the cost of investment of extra large cable can be divided into extra large cable cost, and wear and tear expenses and marine usage take.
Computing formula is
（1）
Wherein,
for total hop count of extra large cable, concerning every section of extra large cable,
for the cost of extra large cable,
for the wear and tear expenses of extra large cable,
for the marine usage of extra large cable takes.Because the electric current that different section seas cable flows through is different, this causes the sectional area of extra large cable to be selected will be different, also cause the difference of the cost of extra large cable thus, therefore
the cost of sea cable is a function relevant to extra large cable sectional area.
（2）
Wherein,
the sectional area of every section of extra large cable,
for the unit price of every section of extra large cable, unit price is the function of the sectional area of extra large cable,
it is the length value of every section of extra large cable.
（3）
Wherein
for the added losses coefficient of extra large cable,
for rate for incorporation into the power network,
for the current value that extra large cable flows through,
for cable data,
for cable length,
for the equivalence loss time in year, according to wind energy turbine set equivalence hourage at full capacity, can obtain by looking into " electric power system design handbook ".According to concrete rate for incorporation into the power network, annual electric energy loss is converted to expense, then discounts according to year runtime number (being generally 25 years).
for interest rate,
for year runtime number.
（4）
Wherein
for the marine usage of every square meter takes,
for the length of extra large cable,
for the band shape expropriation of land width of every root sea cable.Equally, discount by year runtime number.
for interest rate,
for year runtime number.
Step 2.2, according to selected optimization aim, sets up objective function, asks the optimum solution of objective function by method of steepest descent, makes overall cost of ownership minimum, and connects with extra large cable the access point that marine wind electric field collects booster stations and each group of wind power generating set.
Method of steepest descent can realize finding the fastest descent direction from current point and find optimum point.The basic thought of method of steepest descent is: from current point
set out, get function
point
place declines the fastest direction as the direction of search
.By
taylor expansion known:
（5）
Omit
higher-order shear deformation item disregard, get as seen
time, functional value declines at most.So the iterative step that can construct method of steepest descent is as follows:
S1: choose initial point
, given termination error
, make k=0;
S2: calculate
if,
, stop iteration, export
, otherwise carry out the 3rd step;
S3: get
;
S4: carry out linear search, ask
, make
（6）
Order
, k=k+1, turns the 2nd step.
From above calculation procedure, during method of steepest descent iteration ends, what try to achieve is the approximate point in objective function stationary point.
Determine optimal step size
method as follows:
Method one: adopt unidimensional search;
Now
become step-length
function of a single variable, therefore available any one unidimensional search is obtained
, namely
（7）
Method two: the differential method;
Because
（8）
So, under some simple scenarios, can make
（9）
To solve near-optimization step-length
value.
In step 3, if intersecting appears in the slip ring system wiring automatically generated, manually can adjust and will occur that the straight line broken line intersected replaces, and recalculate overall cost of ownership, but the addressing that marine wind electric field collects booster stations no longer changes.
Marine wind electric field provided by the invention collects the site selecting method of booster stations, for the difference of the starting condition such as wind power generating set layout, sea situation, extra large cable unit price of different marine wind electric field, provide the addressing scheme that multiple marine wind electric field collects booster stations, be applicable to multivariant design and optimization than choosing.Further, manually determining by having one before determining addressing the link that wind power generating set is divided into groups, the controllability that deviser connects up to slip ring system can be increased, improve the engineering adaptability that marine wind electric field addressing is optimized.The site selecting method that described marine wind electric field collects booster stations has general applicability, and is convenient to be applied to reality, and the design collecting booster stations for marine wind electric field provides very high reference value.
In addition, those skilled in the art also can do other change in spirit of the present invention, and these changes done according to the present invention's spirit, all should be included in the present invention's scope required for protection certainly.
Claims (10)
1. marine wind electric field collects a site selecting method for booster stations, comprises the following steps:
According to the wind power generating set arrangenent diagram manually provided, with line segment, each wind power generating set is connected grouping, and set up the mark of every section of current collection feeder line, select in each grouping from the access point of the nearest wind power generating set of Rendezvous Point as this group wind power generating set;
According to the difference of different marine wind electric field starting condition, select required optimization aim, set up objective function, try to achieve the optimum solution of objective function, make the overall cost of ownership of wind energy turbine set electrical system minimum, and connect with extra large cable the access point that marine wind electric field collects booster stations and each group of wind power generating set;
Judge the slip ring system wiring automatically generated occurs whether occurring intersecting, and intersects if occur, manually adjust and will occur that the straight line broken line intersected replaces.
2. marine wind electric field as claimed in claim 1 collects the site selecting method of booster stations, it is characterized in that, each wind power generating set connected in the process of grouping, described line scan pickup coil side point coordinate is identical with connected wind power generating set coordinate.
3. marine wind electric field as claimed in claim 1 collects the site selecting method of booster stations, it is characterized in that, according to wind power generating set number in every group by the quantitative limitation of extra large cable current-carrying, by the packet mode manually providing wind power generating set.
4. marine wind electric field as claimed in claim 1 collects the site selecting method of booster stations, and it is characterized in that, described starting condition comprises wind power generating set layout, sea situation, extra large cable unit price.
5. marine wind electric field as claimed in claim 3 collects the site selecting method of booster stations, it is characterized in that, described optimization aim comprise high pressure and middle pressure sea cable minimum, the middle pressure of overall cost of ownership and minimum, the middle pressure of high-pressure undersea cable total length extra large cable total length is minimum, high-pressure undersea cable total length is minimum, minimum, the extra large cable gross investment of circuit total losses and circuit runtime total losses sum minimum in one.
6. marine wind electric field as claimed in claim 1 collects the site selecting method of booster stations, it is characterized in that, if wind power generating set packet count is
, by all wind power generating set packet numberings be
, and with extra large cable, the wind power generating set between each group is connected together, to the connection sea cable label often organized in wind power generating set, rule is as follows: establish grouping
in have
platform wind power generating set, from the extra large cable that the access point of this wind power generating set is directly connected, the extra large cable of this group is labeled as successively
,
...,
.
7. marine wind electric field as claimed in claim 1 collects the site selecting method of booster stations, it is characterized in that, the overall cost of ownership of marine wind electric field electrical system comprises cost of investment three aspect that marine wind electric field collects booster stations cost of investment, wind power generating set cost of investment, extra large cable, and using the main standard of the cost of investment of extra large cable as booster stations addressing.
8. marine wind electric field as claimed in claim 7 collects the site selecting method of booster stations, and it is characterized in that, the cost of investment of extra large cable comprises extra large cable cost, and wear and tear expenses and marine usage take, and computing formula is:
；
Wherein,
for total hop count of extra large cable,
for the cost of every section of extra large cable,
for the wear and tear expenses of extra large cable,
for the marine usage of extra large cable takes.
9. marine wind electric field as claimed in claim 8 collects the site selecting method of booster stations, it is characterized in that,
,
,
calculate respectively by with under type:
；
Wherein,
the sectional area of every section of extra large cable,
for the unit price of every section of extra large cable, unit price is the function of the sectional area of extra large cable,
it is the length value of every section of extra large cable;
；
Wherein
for the added losses coefficient of extra large cable,
for rate for incorporation into the power network,
for the current value that extra large cable flows through,
for cable data,
for cable length,
for the equivalence loss time in year,
for interest rate,
for year runtime number;
；
Wherein
for the marine usage of every square meter takes,
for the band shape expropriation of land width of every root sea cable.
10. marine wind electric field as claimed in claim 1 collects the site selecting method of booster stations, it is characterized in that, if intersecting appears in the slip ring system wiring automatically generated, manually adjust and will occur that the straight line broken line intersected replaces, and recalculate overall cost of ownership, the addressing that marine wind electric field collects booster stations no longer changes.
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Cited By (9)
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|---|---|---|---|---|
| CN106203744A (en) * | 2016-08-19 | 2016-12-07 | 中国能源建设集团广东省电力设计研究院有限公司 | The Optimization Method for Location-Selection of offshore boosting station |
| CN106558886A (en) * | 2015-09-29 | 2017-04-05 | 远景能源（江苏）有限公司 | A kind of wind energy turbine set primary system and its topological arrangement method and apparatus |
| CN107609694A (en) * | 2017-09-04 | 2018-01-19 | 国网江苏省电力公司经济技术研究院 | Offshore wind farm cluster transmission system structural optimization method and storage medium |
| CN108053060A (en) * | 2017-12-07 | 2018-05-18 | 北京天润新能投资有限公司 | A kind of booster stations site selection system and site selecting method based on road automatic route selection in wind power plant field |
| CN108108871A (en) * | 2017-11-09 | 2018-06-01 | 甘肃省电力公司风电技术中心 | The selection method of wind farm group transmission facility |
| CN110416925A (en) * | 2019-07-12 | 2019-11-05 | 上海电机学院 | A kind of submarine cable Wiring design method of offshore wind farm |
| CN111030179A (en) * | 2019-12-26 | 2020-04-17 | 上海电气风电集团股份有限公司 | Optimization method and optimization system for wind power plant layout and computer-readable storage medium |
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| CN106558886A (en) * | 2015-09-29 | 2017-04-05 | 远景能源（江苏）有限公司 | A kind of wind energy turbine set primary system and its topological arrangement method and apparatus |
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| CN107609694A (en) * | 2017-09-04 | 2018-01-19 | 国网江苏省电力公司经济技术研究院 | Offshore wind farm cluster transmission system structural optimization method and storage medium |
| CN108108871B (en) * | 2017-11-09 | 2021-07-13 | 甘肃省电力公司风电技术中心 | Type selection method for wind power plant group power transmission equipment |
| CN108108871A (en) * | 2017-11-09 | 2018-06-01 | 甘肃省电力公司风电技术中心 | The selection method of wind farm group transmission facility |
| CN108053060A (en) * | 2017-12-07 | 2018-05-18 | 北京天润新能投资有限公司 | A kind of booster stations site selection system and site selecting method based on road automatic route selection in wind power plant field |
| CN110416925A (en) * | 2019-07-12 | 2019-11-05 | 上海电机学院 | A kind of submarine cable Wiring design method of offshore wind farm |
| CN110416925B (en) * | 2019-07-12 | 2021-07-20 | 上海电机学院 | Submarine cable wiring design method for offshore wind power |
| CN111030179A (en) * | 2019-12-26 | 2020-04-17 | 上海电气风电集团股份有限公司 | Optimization method and optimization system for wind power plant layout and computer-readable storage medium |
| WO2021128223A1 (en) * | 2019-12-26 | 2021-07-01 | 上海电气风电集团股份有限公司 | Wind farm layout optimization method and optimization system, and computer readable storage medium |
| CN111030179B (en) * | 2019-12-26 | 2023-08-25 | 上海电气风电集团股份有限公司 | Optimization method, optimization system and computer readable storage medium for wind farm layout |
| CN116976153A (en) * | 2023-09-25 | 2023-10-31 | 电子科技大学中山学院 | Marine wind farm booster station site selection method based on integrated model |
| CN116976153B (en) * | 2023-09-25 | 2024-03-22 | 电子科技大学中山学院 | Marine wind farm booster station site selection method based on integrated model |
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