Equipment arrangement method and device of wind-solar complementary power station and wind-solar complementary power station

Abstract

The present invention discloses a method and device for arranging equipment in a wind-solar complementary power station, and a wind-solar complementary power station. According to the arrangement range of the wind power tower base, the land abundance of the project site, and the preset photovoltaic non-arrangeable area, the photovoltaic array arrangeable area in the wind-solar complementary power station is determined, and the wind turbine box transformer arrangeable point set corresponding to each wind turbine is determined according to the different photovoltaic array capacities and arrangement positions in the photovoltaic array arrangeable area, as well as the arrangement range of the wind power tower base. The total cable cost, total power generation loss, and equivalent power generation hours of the wind-solar complementary power station corresponding to each box transformer point in the wind turbine box transformer arrangeable point set are determined to determine the optimal equipment arrangement scheme of the wind-solar complementary power station. The present invention comprehensively considers the land abundance, and determines the optimal equipment arrangement scheme by comprehensively considering the total cable cost, total power generation loss, and equivalent power generation hours, so as to achieve full utilization of land and increase power generation while optimizing the overall arrangement of the wind power complementary power station.

Description

Technical Field

[0001] The present invention relates to the technical field of wind-solar complementary power stations, and more specifically, to an equipment arrangement method and device for a wind-solar complementary power station and a wind-solar complementary power station. Background Art

[0002] Wind power and photovoltaics have developed rapidly in recent years. These two green energy sources are considered to be complementary in terms of power generation. The industry generally believes that photovoltaic power generation does not work at night, while wind power output is relatively large, but during the day, photovoltaic power generation systems work normally, while wind power is relatively small. Therefore, in order to utilize the complementarity of the two energy sources, wind-solar complementary power stations came into being.

[0003] There are two types of existing wind-solar complementary power stations: the first is geographical complementarity, where wind power and photovoltaic power are separate projects and share a booster station to connect to the grid. The two projects can be close or far apart, and their equipment locations are designed according to their respective existing specifications. The second is wind power and photovoltaic power complementarity on the DC side or AC side, where photovoltaic power is used as a supplementary energy source and connected to the equipment of the existing wind power project through an inverter or DC / DC. In this project, the photovoltaic array is generally arranged in a location that avoids the shadow area of ​​the wind turbine.

[0004] As land quotas become increasingly tight and land costs become increasingly expensive, how to optimize the overall layout of wind power complementary power stations to increase power generation while making full use of land has become a technical problem that technical personnel in this field urgently need to solve. Summary of the invention

[0005] In view of this, the present invention discloses an equipment arrangement method and device of a wind-solar complementary power station and a wind-solar complementary power station, so as to optimize the overall arrangement of the wind power complementary power station while fully utilizing the land and increasing the power generation.

[0006] A method for arranging equipment of a wind-solar hybrid power station, comprising:

[0007] Determine the area where the photovoltaic array can be arranged in the wind-solar hybrid power station based on the layout range of the wind turbine tower base, the land abundance of the project site, and the preset photovoltaic non-arrangeable area;

[0008] Determine the wind turbine box transformer arrangable point set corresponding to each wind turbine according to different photovoltaic array capacities and arrangement positions in the photovoltaic array arrangable area and the wind turbine tower base arrangement range;

[0009] Determine the total cable cost, total power generation loss and equivalent power generation hours of the wind-solar complementary power station corresponding to each box transformer point in each wind turbine box transformer arrangable point set;

[0010] An optimal equipment layout plan for the wind-solar complementary power station is determined based on the total cable cost, the total power generation loss and the equivalent power generation hours.

[0011] Optionally, the step of determining the arrangable area of ​​the photovoltaic array in the wind-solar hybrid power station according to the arrangement range of the wind power tower base, the land abundance of the project site, and the preset non-arrangable area of ​​photovoltaic arrays includes:

[0012] After the wind power project determines the arrangement range of the wind turbine tower base, the shadow shielding range of the wind turbine tower on a preset date is obtained according to the relevant parameters of each wind turbine;

[0013] Based on the wind turbine tower point sign radius, with the wind turbine tower center point as the center of the circle, determine the point sign range of all wind turbine towers in the wind-solar hybrid power station;

[0014] Determine whether the land sufficiency of the project site meets the land sufficiency conditions;

[0015] If yes, based on the land abundance of the project site and the preset photovoltaic non-deployable area, the shadow shielding range of the wind turbine tower and the range outside the wind turbine tower point mark range are determined as the photovoltaic array deployable area;

[0016] If not, based on the land abundance of the project site and the preset photovoltaic non-deployable area, the range outside the wind turbine tower point marking range is determined as the photovoltaic array deployable area.

[0017] Optionally, the step of determining the wind turbine box transformer arrangable point set corresponding to each wind turbine according to different photovoltaic array capacities and arrangement positions in the photovoltaic array arrangable area and the wind turbine tower base arrangement range includes:

[0018] Obtaining the tower coordinates of each wind turbine from the wind-solar hybrid power station;

[0019] Arranging a photovoltaic array of a preset capacity outside the wind turbine tower point range according to the tower coordinates;

[0020] According to the relative positions of the wind turbine and the photovoltaic array, finding the closest position of the photovoltaic array to the wind turbine tower;

[0021] Determine the arrangable range of the fan box based on the nearest position;

[0022] Generating a first set of arrangable points of wind turbine chassis transformers within the distance along the line according to a first preset step length, and generating a second set of arrangable points of wind turbine chassis transformers within the photovoltaic array proportion range according to a grid or a second preset step length;

[0023] The fan chassis transformer arrangable point set is obtained according to the first fan chassis transformer arrangable point set and the second fan chassis transformer arrangable point set.

[0024] Optionally, the process of obtaining the total cable cost includes:

[0025] Determine the wind power end cable cost and the photovoltaic end cable cost corresponding to each of the box-type transformer points;

[0026] The total cable cost is obtained according to the wind power end cable cost and the photovoltaic end cable cost.

[0027] Optionally, the process of obtaining the total power generation loss includes:

[0028] Determine the shadow shielding loss of the wind turbine corresponding to each of the box-type transformer points on the photovoltaic power generation;

[0029] Determine the wind-solar system cable loss corresponding to each of the box-type transformer points;

[0030] Obtaining the total power generation loss according to the shadow blocking loss and the wind-solar system cable loss;

[0031] Among them, the cable loss of the wind-solar system includes: cable power generation loss at the wind power end and cable power generation loss at the photovoltaic end. The cable power generation loss at the photovoltaic end includes: low-voltage DC cable loss between N photovoltaic junction boxes and inverters and low-voltage AC cable loss between N inverters and wind turbine box transformers, where N is a positive integer.

[0032] Optionally, the process of obtaining the equivalent power generation hours includes:

[0033] Obtain real-time photovoltaic power based on photovoltaic capacity, longitude and latitude of the project site, altitude and irradiation;

[0034] Obtain real-time wind power based on wind turbine capacity, annual wind speed and wind turbine power curve;

[0035] When the wind and solar AC sides are complementary, the wind and solar system output power is determined based on the photovoltaic real-time power and the wind power real-time power;

[0036] The equivalent power generation hours are determined according to the output power of the wind-solar system.

[0037] Optionally, when the wind and solar AC sides are complementary, the process of determining the output power of the wind and solar system based on the photovoltaic real-time power and the wind power real-time power includes:

[0038] When the sum of the photovoltaic real-time power and the wind power real-time power is not greater than the rated power of the box transformer, the output power of the wind-solar system is determined to be the sum of the photovoltaic real-time power and the wind power real-time power;

[0039] When the sum of the photovoltaic real-time power and the wind power real-time power is greater than the rated power of the box transformer, it is determined that the output power of the wind-solar system is the rated power of the box transformer.

[0040] Optionally, determining the optimal equipment arrangement scheme of the wind-solar complementary power station based on the total cable cost, the total power generation loss and the equivalent power generation hours includes:

[0041] Establishing an optimization objective function for the total cable cost, the total power generation loss and the equivalent power generation hours;

[0042] The optimization objective function is used to traverse all the box-type transformer positions, and the box-type transformer position with the lowest target cost is determined as the optimal box-type transformer position under the photovoltaic array capacity and arrangement position corresponding to a single wind turbine;

[0043] Based on the optimal box transformer position corresponding to each wind turbine, the total cost of the photovoltaic array corresponding to all wind turbines in the wind power complementary power station is obtained, and the photovoltaic array arrangement with the minimum total cost is determined as the optimal equipment arrangement plan.

[0044] An equipment arrangement device for a wind-solar hybrid power station, comprising:

[0045] The arrangement area determination unit is used to determine the arrangable area of ​​the photovoltaic array in the wind-solar hybrid power station according to the arrangement range of the wind power tower base, the land abundance of the project site and the preset photovoltaic non-arrangeable area;

[0046] An arrangement point set determination unit, configured to determine the wind turbine box transformer arrangable point set corresponding to each wind turbine according to different photovoltaic array capacities and arrangement positions in the photovoltaic array arrangable area and the wind turbine tower base arrangement range;

[0047] A power station parameter determination unit, used to determine the total cable cost, total power generation loss and equivalent power generation hours of the wind-solar complementary power station corresponding to each box transformer point in each wind turbine box transformer arrangable point set;

[0048] An arrangement scheme determination unit is used to determine the optimal equipment arrangement scheme of the wind-solar complementary power station based on the total cable cost, the total power generation loss and the equivalent power generation hours.

[0049] Optionally, the arrangement area determination unit includes:

[0050] A shielding range determination subunit is used to obtain the shadow shielding range of the wind turbine tower on a preset date according to relevant parameters of each wind turbine after the wind turbine tower base arrangement range is determined in the wind power project;

[0051] A point sign range determination subunit is used to determine the point sign range of all wind turbine towers in the wind-solar hybrid power station based on the point sign radius of the wind turbine tower and with the center point of the wind turbine tower as the center of the circle;

[0052] A judgment subunit, used to judge whether the land sufficiency of the project site meets the land sufficiency condition;

[0053] A first arrangement area determination subunit is used to determine, when the judgment subunit determines that it is yes, based on the land abundance of the project site and the preset photovoltaic non-arrangeable area, the shadow shielding range of the wind turbine tower and the range outside the wind turbine tower point sign range as the photovoltaic array arrangeable area;

[0054] The second arrangement area determination subunit is used to determine the range outside the wind turbine tower point marking range as the photovoltaic array arrangement area based on the land abundance of the project site and the preset photovoltaic non-arrangeable area when the judgment subunit makes a negative judgment.

[0055] Optionally, the arrangement point set determination unit includes:

[0056] A tower coordinate acquisition subunit, used to acquire the tower coordinates of each wind turbine from the wind-solar hybrid power station;

[0057] An array arrangement subunit, used to arrange a photovoltaic array of a preset capacity outside the wind turbine tower point range according to the tower coordinates;

[0058] A search subunit, used for searching the closest position of the photovoltaic array to the wind turbine tower according to the relative positions of the wind turbine and the photovoltaic array;

[0059] An arrangable range determining subunit, used to determine an arrangable range of the fan box transformer based on the nearest position;

[0060] An arrangement point set generating subunit is used to generate a first wind turbine chassis arrangable point set within the distance along the line according to a first preset step length, and to generate a second wind turbine chassis arrangable point set within the photovoltaic array proportion range according to a grid or a second preset step length;

[0061] The total arranging point set determining subunit is used to obtain the fan chassis variable arranging point set according to the first fan chassis variable arranging point set and the second fan chassis variable arranging point set.

[0062] Optionally, the arrangement scheme determining unit includes:

[0063] A function establishment subunit, used to establish an optimization objective function for the total cable cost, the total power generation loss and the equivalent power generation hours;

[0064] The optimal box transformer position determination subunit is used to traverse all box transformer positions by using the optimization objective function, and determine the box transformer position with the lowest target cost as the optimal box transformer position under the photovoltaic array capacity and arrangement position corresponding to a single wind turbine;

[0065] The optimal equipment arrangement scheme determination subunit is used to obtain the total cost of the photovoltaic arrays corresponding to all wind turbines in the wind power complementary power station at the locations of the photovoltaic arrays based on the optimal box transformer positions corresponding to each wind turbine, and determine the photovoltaic array arrangement with the minimum total cost as the optimal equipment arrangement scheme.

[0066] A wind-solar hybrid power station comprises: a controller and a plurality of single wind turbine optical coupling systems connected to the controller, wherein the controller comprises the equipment arrangement device of the wind-solar hybrid power station described above.

[0067] It can be seen from the above technical scheme that the present invention discloses a method, device and a wind-solar complementary power station for arranging equipment. According to the arrangement range of the wind power tower base, the land abundance of the project site and the preset photovoltaic non-arrangeable area, the photovoltaic array arrangable area in the wind-solar complementary power station is determined. According to the different photovoltaic array capacities and arrangement positions in the photovoltaic array arrangable area, and the arrangement range of the wind power tower base, the wind turbine box transformer arrangable point set corresponding to each wind turbine is determined. The total cable cost, total power generation loss and equivalent power generation hours of the wind-solar complementary power station corresponding to each box transformer point in the wind turbine box transformer arrangable point set are determined. The optimal equipment arrangement scheme of the wind-solar complementary power station is determined based on the total cable cost, total power generation loss and equivalent power generation hours. It can be seen from this that the present invention comprehensively considers the land abundance, and determines the optimal equipment arrangement scheme by comprehensively considering the total cable cost, total power generation loss and equivalent power generation hours, so as to optimize the overall arrangement of the wind power complementary power station while making full use of the land and increasing the power generation. BRIEF DESCRIPTION OF THE DRAWINGS

[0068] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the disclosed drawings without paying creative work.

[0069] Figure 1 A flow chart of a method for arranging equipment in a wind-solar complementary power station disclosed in an embodiment of the present invention;

[0070] Figure 2 A flow chart of a method disclosed in an embodiment of the present invention for determining an area where a photovoltaic array can be arranged in a wind-solar complementary power station according to the arrangement range of a wind power tower base, the land abundance of a project site, and a preset photovoltaic non-arrangeable area;

[0071] Figure 3 A flow chart of a method for determining a set of arrangable points of a fan box transformer disclosed in an embodiment of the present invention;

[0072] Figure 4 A flow chart of a method for determining an optimal equipment arrangement scheme for a wind-solar complementary power station based on total cable cost, total power generation loss and equivalent power generation hours disclosed in an embodiment of the present invention;

[0073] Figure 5 A schematic structural diagram of an equipment arrangement device for a wind-solar hybrid power station disclosed in an embodiment of the present invention;

[0074] Figure 6 The present invention is a schematic structural diagram of a single wind turbine optical coupling system disclosed in an embodiment of the present invention. DETAILED DESCRIPTION

[0075] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0076] The embodiment of the present invention discloses a method and device for arranging equipment in a wind-solar complementary power station, and a wind-solar complementary power station. According to the arrangement range of the wind power tower base, the land abundance of the project site, and the preset photovoltaic non-arrangeable area, the photovoltaic array arrangable area in the wind-solar complementary power station is determined, and the wind turbine box transformer arrangable point set corresponding to each wind turbine is determined according to the different photovoltaic array capacities and arrangement positions in the photovoltaic array arrangable area, as well as the arrangement range of the wind power tower base. The total cable cost, total power generation loss, and equivalent power generation hours of the wind-solar complementary power station corresponding to each box transformer point in the wind turbine box transformer arrangable point set are determined, and the optimal equipment arrangement scheme of the wind-solar complementary power station is determined based on the total cable cost, total power generation loss, and equivalent power generation hours. It can be seen from this that the present invention comprehensively considers the land abundance, and determines the optimal equipment arrangement scheme by comprehensively considering the total cable cost, total power generation loss, and equivalent power generation hours, so as to optimize the overall arrangement of the wind power complementary power station while making full use of the land and increasing the power generation.

[0077] See also Figure 1 , a flow chart of a method for arranging equipment in a wind-solar hybrid power station disclosed in an embodiment of the present invention, the method comprising:

[0078] Step S101, determining the arrangable area of ​​the photovoltaic array in the wind-solar hybrid power station according to the arrangement range of the wind power tower base, the land abundance of the project site, and the preset photovoltaic non-arrangeable area;

[0079] It should be noted that the layout range of wind turbine tower bases can be determined at the early stage of the wind power project.

[0080] Preset areas where photovoltaics cannot be deployed include operation and maintenance channels, wind farm roads, cemeteries, agricultural land, and other areas where photovoltaics cannot be deployed.

[0081] Step S102, determining a set of arrangable points of wind turbine chassis corresponding to each wind turbine according to different photovoltaic array capacities and arrangement positions in the photovoltaic array arrangable area and the wind turbine tower base arrangement range;

[0082] In this embodiment, the arrangable point set of the wind turbine box transformer is: a set of multiple box transformer points.

[0083] Step S103, determining the total cable cost, total power generation loss and equivalent power generation hours of the wind-solar complementary power station corresponding to each box transformer point in the wind turbine box transformer arrangable point set;

[0084] Among them, the total cable cost of the wind-solar complementary power station includes: cable cost at the wind power end and cable cost at the photovoltaic end.

[0085] The total power generation loss of a wind-solar hybrid power station includes: the shadow loss of the wind turbine on the photovoltaic power plant and the cable loss of the wind-solar system.

[0086] In practical applications, the total power generation loss, the wind turbine shading loss on photovoltaics and the wind-solar system cable loss can all be expressed in percentage.

[0087] Step S104: determining an optimal equipment layout plan for the wind-solar complementary power station based on the total cable cost, the total power generation loss and the equivalent power generation hours.

[0088] In practical applications, an optimization objective function of total cable cost, total power generation loss and equivalent power generation hours can be established, and the optimal equipment layout plan of the wind-solar complementary power station can be determined using this optimization objective function.

[0089] In summary, the present invention discloses a method for arranging equipment in a wind-solar complementary power station. According to the arrangement range of the wind power tower base, the land abundance of the project site, and the preset photovoltaic non-arrangeable area, the photovoltaic array arrangable area in the wind-solar complementary power station is determined. According to the different photovoltaic array capacities and arrangement positions in the photovoltaic array arrangable area, and the arrangement range of the wind power tower base, the wind turbine box transformer arrangable point set corresponding to each wind turbine is determined. The total cable cost, total power generation loss, and equivalent power generation hours of the wind-solar complementary power station corresponding to each box transformer point in the wind turbine box transformer arrangable point set are determined. Based on the total cable cost, total power generation loss, and equivalent power generation hours, the optimal equipment arrangement scheme of the wind-solar complementary power station is determined. It can be seen from this that the present invention comprehensively considers the land abundance, and determines the optimal equipment arrangement scheme by comprehensively considering the total cable cost, total power generation loss, and equivalent power generation hours, so as to optimize the overall arrangement of the wind power complementary power station while making full use of the land and increasing the power generation.

[0090] In addition, the set of arrangable points of the wind turbine box transformer determined by the present invention is generated based on the actual arrangable area of ​​the photovoltaic array and the arrangement range of the wind turbine tower base, and can adapt to the actual arrangement of the box transformer in the plant area. Compared with the traditional solution in which all the equipment in the wind-solar complementary power station is arranged next to the wind turbine tower base, the accuracy and reliability of the equipment arrangement are greatly improved.

[0091] To further optimize the above embodiment, see Figure 2 , a flowchart of a method for determining an area where a photovoltaic array can be arranged in a wind-solar complementary power station according to the arrangement range of a wind power tower base, the land abundance of a project site, and a preset photovoltaic non-arrangeable area disclosed in an embodiment of the present invention, the method comprising:

[0092] Step S201: after the wind power project determines the arrangement range of the wind power tower base, the shadow shielding range of the wind turbine tower on a preset date is obtained according to the relevant parameters of each wind turbine;

[0093] It should be noted that in the early stages of a wind power project, technical personnel can determine the layout range of the wind power tower bases based on actual needs. The specific determination process can be found in existing mature plans and will not be repeated here.

[0094] Among them, in this embodiment, the relevant parameters of each wind turbine include: the wind turbine's rotor diameter, hub height, longitude and latitude, and altitude parameters.

[0095] The preset dates are preferably four typical days: the winter solstice, the summer solstice, the vernal equinox and the autumnal equinox.

[0096] Specifically, after the wind power project determines the layout range of the wind turbine tower base, that is, the tower base location, the shadow shielding range S1 on four typical days, namely the winter solstice, summer solstice, vernal equinox and autumnal equinox, is calculated based on the rotor diameter, hub height, longitude and latitude, and altitude parameters of each wind turbine.

[0097] In practical applications, the shadow occlusion range can be modeled and calculated using professional shadow software such as sunlight and Tianzheng Electrical.

[0098] Step S202: Based on the wind turbine tower point sign radius, with the center point of the wind turbine tower as the center of the circle, determine the point sign range of all wind turbine towers in the wind-solar hybrid power station;

[0099] Specifically, based on the point feature radius r of the wind turbine tower, with the center point of the wind turbine tower as the center of the circle, the point feature range πr of each wind turbine tower is obtained: 2 Thus, the point range S2 of all wind turbine towers in the wind-solar hybrid power station is determined, or in other words, the point ranges of all wind turbine towers of all stations (such as station Q) in the wind-solar hybrid power station are determined.

[0100] Step S203, determining whether the land sufficiency of the project site meets the land sufficiency condition, if yes, executing step S204, if no, executing step S205;

[0101] The land abundance condition is determined according to actual needs, and the present invention does not limit it.

[0102] Step S204: Based on the land abundance of the project site and the preset photovoltaic non-deployable area, the shadow shielding range of the wind turbine tower and the range outside the wind turbine tower point mark range are determined as the photovoltaic array deployable area.

[0103] Specifically, if there is sufficient land, all photovoltaic arrays can be arranged on land outside the shadow range S1 of the wind tower and the point mark range S2 of the wind tower.

[0104] Step S205: Based on the land abundance of the project site and the preset photovoltaic non-deployable area, determine the area outside the wind turbine tower point marking range as the photovoltaic array deployable area.

[0105] When land is insufficient, the photovoltaic array can be arranged to fully utilize the land outside the wind tower point collection range S2.

[0106] It should be noted that when determining the area where the photovoltaic array can be deployed, the preset areas where the photovoltaic array cannot be deployed should be avoided, such as operation and maintenance channels, wind farm roads, cemeteries, agricultural land, etc.

[0107] To further optimize the above embodiment, see Figure 3 , a flow chart of a method for determining a set of arrangable points of a wind turbine chassis transformer disclosed in an embodiment of the present invention, that is, step S102 may specifically include:

[0108] Step S301, obtaining the tower coordinates of each wind turbine from the wind-solar hybrid power station;

[0109] Step S302: Arrange a photovoltaic array of a preset capacity outside the wind turbine tower point range according to the tower coordinates;

[0110] Step S303: Find the closest position of the photovoltaic array to the wind turbine tower according to the relative positions of the wind turbine and the photovoltaic array;

[0111] Step S304, determining the arrangable range of the fan box based on the nearest position;

[0112] Among them, the arrangement range of the wind turbine box transformer includes: the distance along the line between the wind turbine tower and the nearest position and the proportion range of the photovoltaic array.

[0113] Step S305, generating a first set of arrangable points of wind turbine chassis transformers within the distance along the line according to a first preset step length, and generating a second set of arrangable points of wind turbine chassis transformers within the photovoltaic array proportion range according to a grid or a second preset step length;

[0114] The values ​​of the first preset step length and the second preset step length may be the same or different, depending on actual needs, and the present invention does not limit this.

[0115] Step S306: Obtain the wind box transformer arrangable point set according to the first wind box transformer arrangable point set and the second wind box transformer arrangable point set.

[0116] In practical applications, the tower coordinates of any wind turbine q (wind turbine) are obtained from the wind-solar hybrid power station. According to the tower coordinates, a photovoltaic array with a preset capacity of aMW is arranged outside the wind turbine tower point range. According to the relative arrangement positions of the wind turbine q and the photovoltaic array, the nearest position near_q of the photovoltaic array from the wind turbine tower is found, and the arrangement range of the wind turbine box is determined based on the nearest position near_q, including: the distance L along the wind turbine tower q and the nearest position near_q and the proportion range φ of the photovoltaic array.

[0117] A first wind box variable arrangeable point set xb1 is generated according to a first preset step size within a distance L along the line, and a second wind box variable arrangeable point set xb2 is generated according to a grid or a second preset step size within a photovoltaic array proportion range φ. The wind box variable arrangeable point set is obtained according to the first wind box variable arrangeable point set xb1 and the second wind box variable arrangeable point set xb2. Specifically, all point set coordinates of the first wind box variable arrangeable point set xb1 and the second wind box variable arrangeable point set xb2 are the wind box variable arrangeable point set.

[0118] To further optimize the above embodiment, the process of obtaining the total cable cost of the wind-solar hybrid power station includes:

[0119] Determine the cable cost at the wind power end and the photovoltaic end corresponding to each substation;

[0120] The total cable cost of the wind-solar complementary power station is obtained according to the wind power end cable cost and the photovoltaic end cable cost.

[0121] Specifically, the distance between the wind power converter and the transformer at transformer point i is L 风i , according to the maximum output current I of the wind turbine converter 风 Get the cable specification S for wind power converter-box transformer 风i , according to cable specification S 风i Get low voltage cable unit price 风i , so that the wind power cable cost Price can be determined 风i , Wind power cable cost Price 风i The expression is as follows:

[0122] Price 风i =L 风i *p 风i ;

[0123] At the box transformer point i, the junction area in the photovoltaic array is first divided and numbered, recorded as N junction areas. Taking a single junction area as a unit, each pile foundation point in the junction area is a point where the junction box can be arranged. Each pile foundation point is traversed to find the pile foundation point with the lowest total cost of photovoltaic dedicated cables and low-voltage cables in each junction area, and the pile foundation point is determined as the best junction box position for each junction area.

[0124] For the junction area numbered n, the output current I of the junction box is determined according to the number of connected string branches m of each junction box. 光(H-N)ni , you can get the cable specification S of combiner box-inverter 光(H-N)ni , according to the specifications, the unit price of low voltage cable can be obtained 光(H-N)ni , the distance between combiner box n and inverter is L 光(H-N)ni ; The cost of photovoltaic special cable is p 光伏专用 The total length of the photovoltaic cables from all the strings in the array to their respective combiner boxes is L. 光伏专用i The distance between the inverter and the fan box is L 光(N-X)i , according to the maximum output current of the inverter is I 光(N-X) Corresponding to the cable specification S between the inverter and the fan box transformer 光(N-X) , the corresponding cable unit price is p 光(N-X) The cost of photovoltaic cables consists of: photovoltaic special cables, low-voltage DC cables between the combiner box and the inverter, and low-voltage AC cables between the inverter and the box transformer. 光i The expression is as follows:

[0125]

[0126] Therefore, the total cable cost at the transformer substation point i isi The cable cost at the wind power end is Price 风i PV cable price 光i sum.

[0127] To further optimize the above embodiment, the process of obtaining the total power generation loss of the wind-solar hybrid power station includes:

[0128] (1) Determine the shadow loss C of the wind turbine on the photovoltaic power plant corresponding to each box transformer point 遮i .

[0129] In practical applications, the shadow loss C of wind turbines on photovoltaic can be obtained through PV and other photovoltaic software simulation. 遮i .

[0130] (2) Determine the cable loss C of the wind-solar system corresponding to each box-type transformer point 电缆i .

[0131] In practical applications, the cable power generation loss at the wind power end is mainly the low-voltage AC cable loss, and the cable power generation loss at the photovoltaic end is mainly: the low-voltage DC cable loss between N photovoltaic combiner boxes and the inverter and the low-voltage AC cable loss between N inverters and the wind turbine box transformer. The cable loss C of the wind-solar system 电缆i The expression is as follows:

[0132]

[0133] In the formula,

[0134]

[0135]

[0136] η 风 is the voltage drop loss percentage of wind power converter-wind power box transformer, η 光(N-X) is the voltage drop loss percentage of the PV combiner box-inverter, η 光(H-N)ni is the voltage drop loss percentage of the inverter-wind turbine box transformer;

[0137] U AC风 is the rated output voltage of the wind turbine converter; U AC光 is the maximum output voltage of the inverter;

[0138] P 风 is the rated power of the wind turbine converter;

[0139] P ni = string power * number of branches connected to each bus area m;

[0140] R S风i For cable specification S 风iThe resistance value, R S光(H-N)i For cable specification S 光(H-N)i The resistance value, R S光(N-X) Cable specification S 光(N-X) The resistance value;

[0141] (3) According to the shadow occlusion loss C 遮i Cable loss of wind and solar system C 电缆i The total power generation loss C of the wind-solar hybrid power station is obtained i ,

[0142] Power generation loss C i The expression is as follows:

[0143] C i =C 遮i +C 电缆i ;

[0144] To further optimize the above embodiment, the process of obtaining the equivalent generating hours of the wind-solar hybrid power station includes:

[0145] According to the wind turbine box variable power, wind speed, wind turbine power curve, light resources and photovoltaic array capacity, the real-time wind power output and photovoltaic real-time output are obtained. Based on the real-time wind power output and photovoltaic real-time output, the equivalent power generation hours of the wind-solar complementary power station are obtained.

[0146] Specifically, the equivalent power generation hours h of the wind-solar hybrid power station are obtained:

[0147] Get the real-time photovoltaic power according to the photovoltaic capacity aMW, the longitude and latitude of the project site, altitude and irradiation

[0148] Obtain wind power real-time power based on wind turbine capacity bMW, annual wind speed and wind turbine power curve

[0149] When the wind and solar power are complementary on the AC side, based on the real-time photovoltaic power and wind power real-time power Determine the output power of the wind and solar system

[0150] According to the output power of the wind and solar system Determine the equivalent power generation hours h of the wind-solar hybrid power station.

[0151] Among them, according to the output power of the wind and solar system The process of determining the equivalent power generation hours h of the wind-solar hybrid power station can be referred to the existing mature solutions and will not be repeated here.

[0152] Among them, when the wind and solar AC sides complement each other, based on the real-time photovoltaic power and wind power real-time power Determine the output power of the wind and solar system The process specifically includes:

[0153] When the photovoltaic real-time power +Real-time wind power ≤ Rated power of box-type transformer When the wind and solar system output power is determined to be

[0154] When the photovoltaic real-time power +Real-time wind power > Rated power of box-type transformer When the wind and solar system output power is determined

[0155] To further optimize the above embodiment, see Figure 4 , a flowchart of a method for determining an optimal equipment arrangement scheme of a wind-solar complementary power station based on total cable cost, total power generation loss and equivalent power generation hours disclosed in an embodiment of the present invention, the method comprising:

[0156] Step S401, establishing an optimization objective function of total cable cost, total power generation loss and equivalent power generation hours;

[0157] Among them, the optimization objective function corresponding to the box change point set i is f i =Price i +C i hα, where Price i is the total cable cost, C i is the total power generation loss, h is the equivalent power generation hour, and α is the impact factor of power generation on the entire wind power system.

[0158] Step S402: traverse all box-type transformer locations using the optimization objective function, and determine the box-type transformer location with the lowest target cost as the optimal box-type transformer location under the photovoltaic array capacity and arrangement position corresponding to a single wind turbine;

[0159] Step S403: Based on the optimal box transformer position corresponding to each wind turbine, the total cost of the photovoltaic arrays corresponding to all wind turbines in the wind power complementary power station is obtained, and the photovoltaic array arrangement with the minimum total cost is determined as the optimal equipment arrangement scheme of the wind-solar complementary power station.

[0160] It should be noted that in the transformer point set xb1+xb2, all transformer positions are traversed, f i The minimum corresponding box transformer position is the optimal box transformer position corresponding to a single fan.

[0161] According to the above steps, we can obtain the optimal box transformer positions [i1,i2,…i Q], and obtain the total cost F = f1+f2+…f at the location of Q photovoltaic arrays corresponding to Q wind turbines. Q .

[0162] By changing the arrangement position of the photovoltaic array connected to one or more wind turbines, the optimal box transformer position corresponding to each wind turbine is found according to the above steps, and the total cost F at the location of Q photovoltaic arrays corresponding to Q wind turbines is calculated. The photovoltaic array arrangement with the smallest F is the optimal equipment arrangement plan for the wind-solar complementary power station.

[0163] It should be noted that the above scheme can also be extended to the complementary side of wind and solar power on the DC side. In this case, the cable cost is extended to the cost of two-stage cables: string-combiner box-wind turbine converter; the cable loss is extended to the loss percentage between the two-stage cables: string-combiner box-wind turbine converter. The position of the wind turbine converter is not changed. By optimizing the capacity and position of the photovoltaic array, the optimal equipment position arrangement scheme for the DC-coupled wind-solar complementary system is obtained.

[0164] In summary, the equipment arrangement method of the wind-solar complementary power station disclosed in the present invention comprehensively considers the total cable cost, total power generation loss and equivalent power generation hours under different arrangement modes, and finds the optimal photovoltaic array capacity, arrangement position and the optimal box transformer arrangement position of the wind-solar complementary power station by establishing an optimization objective function. By comprehensively considering the relative positions of each tower base of the wind turbine and the photovoltaic array, a set of wind turbine box transformer points that adapt to the actual plant area arrangement can be generated, which optimizes the traditional solution in which the box transformer is only arranged next to the tower.

[0165] In addition, the present invention can generate the optimal equipment layout plan of the corresponding wind-solar complementary power station according to the degree of land abundance. In areas with sufficient land, the photovoltaic array is arranged in the non-shadow area to obtain the optimal equipment layout plan of the wind-solar system; in areas with scarce land, the shadow blocking effect of the wind turbine on the photovoltaic is taken into account to find the equipment layout plan with the best comprehensive consideration of shadow loss and system cost.

[0166] Corresponding to the above method embodiment, the present invention also discloses an equipment arrangement device for a wind-solar complementary power station.

[0167] See also Figure 5 , a schematic diagram of a structure of a device arrangement device for a wind-solar hybrid power station disclosed in an embodiment of the present invention, the device comprising:

[0168] The arrangement area determination unit 501 is used to determine the arrangable area of ​​the photovoltaic array in the wind-solar hybrid power station according to the arrangement range of the wind power tower base, the land abundance of the project site and the preset photovoltaic non-arrangeable area;

[0169] It should be noted that the layout range of wind turbine tower bases can be determined at the early stage of the wind power project.

[0170] Preset areas where photovoltaics cannot be deployed include operation and maintenance channels, wind farm roads, cemeteries, agricultural land, and other areas where photovoltaics cannot be deployed.

[0171] The arrangement point set determination unit 502 is used to determine the wind turbine box transformer arrangable point set corresponding to each wind turbine according to the different photovoltaic array capacities and arrangement positions in the photovoltaic array arrangable area and the wind turbine tower base arrangement range;

[0172] In this embodiment, the arrangable point set of the wind turbine box transformer is: a set of multiple box transformer points.

[0173] A power station parameter determination unit 503 is used to determine the total cable cost, total power generation loss and equivalent power generation hours of the wind-solar complementary power station corresponding to each box transformer point in each wind turbine box transformer arrangable point set;

[0174] Among them, the total cable cost of the wind-solar complementary power station includes: cable cost at the wind power end and cable cost at the photovoltaic end.

[0175] The total power generation loss of a wind-solar hybrid power station includes: the shadow loss of the wind turbine on the photovoltaic power plant and the cable loss of the wind-solar system.

[0176] In practical applications, the total power generation loss, the wind turbine shading loss on photovoltaics and the wind-solar system cable loss can all be expressed in percentage.

[0177] The arrangement scheme determination unit 504 is used to determine the optimal equipment arrangement scheme of the wind-solar complementary power station based on the total cable cost, the total power generation loss and the equivalent power generation hours.

[0178] In practical applications, an optimization objective function of total cable cost, total power generation loss and equivalent power generation hours can be established, and the optimal equipment layout plan of the wind-solar complementary power station can be determined using this optimization objective function.

[0179] In summary, the present invention discloses an equipment arrangement device for a wind-solar complementary power station. According to the arrangement range of the wind turbine tower base, the land abundance of the project site, and the preset photovoltaic non-arrangeable area, the photovoltaic array arrangeable area in the wind-solar complementary power station is determined. According to the different photovoltaic array capacities and arrangement positions in the photovoltaic array arrangeable area, and the arrangement range of the wind turbine tower base, the wind turbine box transformer arrangeable point set corresponding to each wind turbine is determined. The total cable cost, total power generation loss, and equivalent power generation hours of the wind-solar complementary power station corresponding to each box transformer point in the wind turbine box transformer arrangeable point set are determined. Based on the total cable cost, total power generation loss, and equivalent power generation hours, the optimal equipment arrangement plan of the wind-solar complementary power station is determined. It can be seen from this that the present invention comprehensively considers the land abundance, and determines the optimal equipment arrangement plan by comprehensively considering the total cable cost, total power generation loss, and equivalent power generation hours, so as to optimize the overall arrangement of the wind power complementary power station while making full use of the land and increasing the power generation.

[0180] In addition, the set of arrangable points of the wind turbine box transformer determined by the present invention is generated based on the actual arrangable area of ​​the photovoltaic array and the arrangement range of the wind turbine tower base, and can adapt to the actual arrangement of the box transformer in the plant area. Compared with the traditional solution in which all the equipment in the wind-solar complementary power station is arranged next to the wind turbine tower base, the accuracy and reliability of the equipment arrangement are greatly improved.

[0181] To further optimize the above embodiment, the arrangement area determination unit 501 may include:

[0182] A shielding range determination subunit is used to obtain the shadow shielding range of the wind turbine tower on a preset date according to relevant parameters of each wind turbine after the wind turbine tower base arrangement range is determined in the wind power project;

[0183] A point sign range determination subunit is used to determine the point sign range of all wind turbine towers in the wind-solar hybrid power station based on the point sign radius of the wind turbine tower and with the center point of the wind turbine tower as the center of the circle;

[0184] A judgment subunit, used to judge whether the land sufficiency of the project site meets the land sufficiency condition;

[0185] A first arrangement area determination subunit is used to determine, when the judgment subunit determines that it is yes, based on the land abundance of the project site and the preset photovoltaic non-arrangeable area, the shadow shielding range of the wind turbine tower and the range outside the wind turbine tower point sign range as the photovoltaic array arrangeable area;

[0186] The second arrangement area determination subunit is used to determine the range outside the wind turbine tower point marking range as the photovoltaic array arrangement area based on the land abundance of the project site and the preset photovoltaic non-arrangeable area when the judgment subunit makes a negative judgment.

[0187] To further optimize the above embodiment, the arrangement point set determination unit 502 may include:

[0188] A tower coordinate acquisition subunit, used to acquire the tower coordinates of each wind turbine from the wind-solar hybrid power station;

[0189] An array arrangement subunit, used to arrange a photovoltaic array of a preset capacity outside the wind turbine tower point range according to the tower coordinates;

[0190] A search subunit, used for searching the closest position of the photovoltaic array to the wind turbine tower according to the relative positions of the wind turbine and the photovoltaic array;

[0191] An arrangable range determining subunit, used to determine an arrangable range of the fan box transformer based on the nearest position;

[0192] An arrangement point set generating subunit is used to generate a first wind turbine chassis arrangable point set within the distance along the line according to a first preset step length, and to generate a second wind turbine chassis arrangable point set within the photovoltaic array proportion range according to a grid or a second preset step length;

[0193] The total arranging point set determining subunit is used to obtain the fan chassis variable arranging point set according to the first fan chassis variable arranging point set and the second fan chassis variable arranging point set.

[0194] In this embodiment, the process of obtaining the total cable cost may include:

[0195] Determine the wind power end cable cost and the photovoltaic end cable cost corresponding to each of the box-type transformer points;

[0196] The total cable cost is obtained according to the wind power end cable cost and the photovoltaic end cable cost.

[0197] The process of obtaining the total power generation loss may include:

[0198] Determine the shadow shielding loss of the wind turbine corresponding to each of the box-type transformer points on the photovoltaic power generation;

[0199] Determine the wind-solar system cable loss corresponding to each of the box-type transformer points;

[0200] Obtaining the total power generation loss according to the shadow blocking loss and the wind-solar system cable loss;

[0201] Among them, the cable loss of the wind-solar system includes: cable power generation loss at the wind power end and cable power generation loss at the photovoltaic end. The cable power generation loss at the photovoltaic end includes: low-voltage DC cable loss between N photovoltaic junction boxes and inverters and low-voltage AC cable loss between N inverters and wind turbine box transformers, where N is a positive integer.

[0202] The process of obtaining equivalent electricity hours can include:

[0203] Obtain real-time photovoltaic power based on photovoltaic capacity, longitude and latitude of the project site, altitude and irradiation;

[0204] Obtain real-time wind power based on wind turbine capacity, annual wind speed and wind turbine power curve;

[0205] When the wind and solar AC sides are complementary, the wind and solar system output power is determined based on the photovoltaic real-time power and the wind power real-time power;

[0206] The equivalent power generation hours are determined according to the output power of the wind-solar system.

[0207] It should be noted that when the wind and solar power are complementary on the AC side, the process of determining the output power of the wind and solar power system based on the photovoltaic real-time power and the wind power real-time power includes:

[0208] When the sum of the photovoltaic real-time power and the wind power real-time power is not greater than the rated power of the box transformer, the output power of the wind-solar system is determined to be the sum of the photovoltaic real-time power and the wind power real-time power;

[0209] When the sum of the photovoltaic real-time power and the wind power real-time power is greater than the rated power of the box transformer, it is determined that the output power of the wind-solar system is the rated power of the box transformer.

[0210] To further optimize the above embodiment, the arrangement scheme determining unit 504 may include:

[0211] A function establishment subunit, used to establish an optimization objective function for the total cable cost, the total power generation loss and the equivalent power generation hours;

[0212] The optimal box transformer position determination subunit is used to traverse all box transformer positions by using the optimization objective function, and determine the box transformer position with the lowest target cost as the optimal box transformer position under the photovoltaic array capacity and arrangement position corresponding to a single wind turbine;

[0213] The optimal equipment arrangement scheme determination subunit is used to obtain the total cost of the photovoltaic arrays corresponding to all wind turbines in the wind power complementary power station at the locations of the photovoltaic arrays based on the optimal box transformer positions corresponding to each wind turbine, and determine the photovoltaic array arrangement with the minimum total cost as the optimal equipment arrangement scheme.

[0214] It should be noted that, for the specific working principles of each component in the device embodiment, please refer to the corresponding part of the method embodiment, which will not be repeated here.

[0215] Corresponding to the above embodiments, the present invention also discloses a wind-solar complementary power station, which includes: a controller and a plurality of single wind turbine optical coupling systems connected to the controller, wherein the controller includes the equipment arrangement device of the wind-solar complementary power station in the above embodiments. The process of the controller determining the optimal equipment arrangement scheme can be referred to the corresponding part of the above embodiments, which will not be repeated here.

[0216] For easier understanding, see Figure 6 , a schematic diagram of a single wind turbine optical coupling system disclosed in an embodiment of the present invention, the single wind turbine optical coupling system comprises: a wind turbine 10, a machine-side current meter 11, a grid-side current meter 12, a box transformer 13, a photovoltaic string 14, an inverter 15 and a boost station 16, the DC power output by the photovoltaic string 14 is transmitted through a combiner box ( Figure 6 The wind turbine 10 is connected to the low-voltage side of the wind turbine box transformer 13 through the machine-side converter 11 and the grid-side converter 12, and the box transformer 13 is connected to the grid 17 through the booster station 16.

[0217] It should be noted that the process of the controller determining the equipment arrangement scheme in the wind-solar hybrid power station can be found in the corresponding part of the device embodiment, which will not be repeated here.

[0218] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0219] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0220] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments described herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for arranging equipment for a wind-solar hybrid power station, characterized in that: include: Determine the area where the photovoltaic array can be arranged in the wind-solar hybrid power station based on the arrangement range of the wind turbine tower base, the land abundance of the project site, and the preset photovoltaic non-arrangeable area; Determine the wind turbine box transformer arrangable point set corresponding to each wind turbine according to different photovoltaic array capacities and arrangement positions in the photovoltaic array arrangable area and the wind turbine tower base arrangement range; Determine the total cable cost, total power generation loss and equivalent power generation hours of the wind-solar complementary power station corresponding to each box transformer point in each wind turbine box transformer arrangable point set; An optimal equipment layout plan for the wind-solar complementary power station is determined based on the total cable cost, the total power generation loss and the equivalent power generation hours.

2. The device arrangement method according to claim 1, characterized in that: The determination of the arrangable area of ​​the photovoltaic array in the wind-solar hybrid power station based on the arrangement range of the wind power tower base, the land abundance of the project site and the preset photovoltaic non-arrangeable area includes: After the wind power project determines the arrangement range of the wind turbine tower base, the shadow shielding range of the wind turbine tower on a preset date is obtained according to the relevant parameters of each wind turbine; Based on the wind turbine tower point sign radius, with the wind turbine tower center point as the center of the circle, determine the point sign range of all wind turbine towers in the wind-solar hybrid power station; Determine whether the land sufficiency of the project site meets the land sufficiency conditions; If yes, based on the land abundance of the project site and the preset photovoltaic non-deployable area, the shadow shielding range of the wind turbine tower and the range outside the wind turbine tower point mark range are determined as the photovoltaic array deployable area; If not, based on the land abundance of the project site and the preset photovoltaic non-deployable area, the range outside the wind turbine tower point marking range is determined as the photovoltaic array deployable area.

3. The device arrangement method according to claim 1, characterized in that: The step of determining a set of arrangable points of wind turbine chassis corresponding to each wind turbine according to different photovoltaic array capacities and arrangement positions in the arrangable photovoltaic array area and the arrangement range of the wind turbine tower base includes: Obtaining the tower coordinates of each wind turbine from the wind-solar hybrid power station; Arranging a photovoltaic array of a preset capacity outside the wind turbine tower point range according to the tower coordinates; According to the relative positions of the wind turbine and the photovoltaic array, finding the closest position of the photovoltaic array to the wind turbine tower; Determine the arrangable range of the wind turbine box transformer based on the nearest position; wherein the arrangable range of the wind turbine box transformer includes: the distance along the line between the wind turbine tower and the nearest position and the proportion range of the photovoltaic array; Generating a first set of arrangable points of wind turbine chassis transformers within the distance along the line according to a first preset step length, and generating a second set of arrangable points of wind turbine chassis transformers within the photovoltaic array proportion range according to a grid or a second preset step length; The fan chassis transformer arrangable point set is obtained according to the first fan chassis transformer arrangable point set and the second fan chassis transformer arrangable point set.

4. The device arrangement method according to claim 1, characterized in that: The process of obtaining the total cable cost includes: Determine the wind power end cable cost and the photovoltaic end cable cost corresponding to each of the box-type transformer points; The total cable cost is obtained according to the wind power end cable cost and the photovoltaic end cable cost.

5. The device arrangement method according to claim 1, characterized in that: The process of obtaining the total power generation loss includes: Determine the shadow shielding loss of the wind turbine corresponding to each of the box-type transformer points on the photovoltaic power generation; Determine the wind-solar system cable loss corresponding to each of the box-type transformer points; Obtaining the total power generation loss according to the shadow blocking loss and the wind-solar system cable loss; Among them, the cable loss of the wind-solar system includes: cable power generation loss at the wind power end and cable power generation loss at the photovoltaic end. The cable power generation loss at the photovoltaic end includes: low-voltage DC cable loss between N photovoltaic junction boxes and inverters and low-voltage AC cable loss between N inverters and wind turbine box transformers, where N is a positive integer.

6. The device arrangement method according to claim 1, characterized in that: The process of obtaining the equivalent power generation hours includes: Obtain real-time photovoltaic power based on photovoltaic capacity, longitude and latitude of the project site, altitude and irradiation; Obtain real-time wind power based on wind turbine capacity, annual wind speed and wind turbine power curve; When the wind and solar AC sides are complementary, the wind and solar system output power is determined based on the photovoltaic real-time power and the wind power real-time power; The equivalent power generation hours are determined according to the output power of the wind-solar system.

7. The device arrangement method according to claim 6, characterized in that: When the wind and solar AC sides are complementary, the process of determining the wind and solar system output power based on the photovoltaic real-time power and the wind power real-time power includes: When the sum of the photovoltaic real-time power and the wind power real-time power is not greater than the rated power of the box transformer, the output power of the wind-solar system is determined to be the sum of the photovoltaic real-time power and the wind power real-time power; When the sum of the photovoltaic real-time power and the wind power real-time power is greater than the rated power of the box transformer, it is determined that the output power of the wind-solar system is the rated power of the box transformer.

8. The device arrangement method according to claim 1, characterized in that: The determining of the optimal equipment arrangement scheme of the wind-solar complementary power station based on the total cable cost, the total power generation loss and the equivalent power generation hours includes: Establishing an optimization objective function for the total cable cost, the total power generation loss and the equivalent power generation hours; The optimization objective function is used to traverse all the box-type transformer positions, and the box-type transformer position with the lowest target cost is determined as the optimal box-type transformer position under the photovoltaic array capacity and arrangement position corresponding to a single wind turbine; Based on the optimal box transformer position corresponding to each wind turbine, the total cost of the photovoltaic array corresponding to all wind turbines in the wind-solar complementary power station is obtained, and the photovoltaic array arrangement with the minimum total cost is determined as the optimal equipment arrangement plan.

9. An equipment arrangement device for a wind-solar hybrid power station, characterized in that: include: The arrangement area determination unit is used to determine the arrangable area of ​​the photovoltaic array in the wind-solar hybrid power station according to the arrangement range of the wind power tower base, the land abundance of the project site and the preset photovoltaic non-arrangeable area; An arrangement point set determination unit, configured to determine the wind turbine box transformer arrangable point set corresponding to each wind turbine according to different photovoltaic array capacities and arrangement positions in the photovoltaic array arrangable area and the wind turbine tower base arrangement range; A power station parameter determination unit, used to determine the total cable cost, total power generation loss and equivalent power generation hours of the wind-solar complementary power station corresponding to each box transformer point in each wind turbine box transformer arrangable point set; An arrangement scheme determination unit is used to determine the optimal equipment arrangement scheme of the wind-solar complementary power station based on the total cable cost, the total power generation loss and the equivalent power generation hours.

10. The equipment arrangement device according to claim 9, characterized in that: The arrangement area determination unit includes: A shielding range determination subunit is used to obtain the shadow shielding range of the wind turbine tower on a preset date according to relevant parameters of each wind turbine after the wind turbine tower base arrangement range is determined in the wind power project; A point sign range determination subunit is used to determine the point sign range of all wind turbine towers in the wind-solar hybrid power station based on the point sign radius of the wind turbine tower and with the center point of the wind turbine tower as the center of the circle; A judgment subunit, used to judge whether the land sufficiency of the project site meets the land sufficiency condition; A first arrangement area determination subunit is used to determine, when the judgment subunit determines that it is yes, based on the land abundance of the project site and the preset photovoltaic non-arrangeable area, the shadow shielding range of the wind turbine tower and the range outside the wind turbine tower point sign range as the photovoltaic array arrangeable area; The second arrangement area determination subunit is used to determine the range outside the wind turbine tower point marking range as the photovoltaic array arrangement area based on the land abundance of the project site and the preset photovoltaic non-arrangeable area when the judgment subunit makes a negative judgment.

11. The equipment arrangement device according to claim 9, characterized in that: The arrangement point set determination unit comprises: A tower coordinate acquisition subunit, used to acquire the tower coordinates of each wind turbine from the wind-solar hybrid power station; An array arrangement subunit, used to arrange a photovoltaic array of a preset capacity outside the wind turbine tower point range according to the tower coordinates; A search subunit, used for searching the closest position of the photovoltaic array to the wind turbine tower according to the relative positions of the wind turbine and the photovoltaic array; The arrangable range determination subunit is used to determine the arrangable range of the wind turbine box transformer based on the nearest position; wherein the arrangable range of the wind turbine box transformer includes: the distance along the line between the wind turbine tower and the nearest position and the proportion range of the photovoltaic array; An arrangement point set generating subunit is used to generate a first wind turbine chassis arrangable point set within the distance along the line according to a first preset step length, and to generate a second wind turbine chassis arrangable point set within the photovoltaic array proportion range according to a grid or a second preset step length; The total arranging point set determining subunit is used to obtain the fan chassis variable arranging point set according to the first fan chassis variable arranging point set and the second fan chassis variable arranging point set.

12. The equipment arrangement device according to claim 9, characterized in that: The arrangement scheme determination unit comprises: A function establishment subunit, used to establish an optimization objective function for the total cable cost, the total power generation loss and the equivalent power generation hours; The optimal box transformer position determination subunit is used to traverse all box transformer positions by using the optimization objective function, and determine the box transformer position with the lowest target cost as the optimal box transformer position under the photovoltaic array capacity and arrangement position corresponding to a single wind turbine; The optimal equipment arrangement scheme determination subunit is used to obtain the total cost of the photovoltaic array corresponding to all wind turbines in the wind-solar complementary power station at the location of the photovoltaic array based on the optimal box transformer position corresponding to each wind turbine, and determine the photovoltaic array arrangement with the minimum total cost as the optimal equipment arrangement scheme.

13. A wind-solar hybrid power station, characterized in that: include: A controller and a plurality of single wind turbine optical coupling systems connected to the controller, wherein the controller comprises the equipment arrangement device of the wind-solar complementary power station according to any one of claims 9 to 12.

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