39 results about "Prevailing winds" patented technology

The invention discloses a wind power plant micro-siting assessment method based on spatial analysis and climate adaptability, relates to the technical field of wind power plant siting, and solves the problems that in the prior art, spatial analysis depends on static topographic data, climate adaptability assessment uses dynamic meteorological data, and the static topographic data and the dynamic meteorological data lack a space-time synchronization mechanism; and a prediction result has a large deviation. The method comprises the following steps: firstly, acquiring multi-source data and fusing to realize time-space synchronization of the data; then, constructing and solving an objective function to obtain a candidate point set, and screening out an optimized point distribution scheme of which the prevailing wind direction coverage is greater than a set threshold value; and finally, inputting prediction data of various extreme climates into the cost-per-kilowatt-hour model, introducing extreme climate toughness parameters into calculation to carry out climate adaptability data correction, and calculating return on investment cycles under different carbon emission scenes. Through the steps, the limitation that only static wind resources are concerned on traditional site selection is broken through, and combined evaluation of the regional climate adaptability and the complex terrain adaptability is achieved.

The invention provides a day-ahead prediction method and device for wind power cluster power, equipment and a storage medium. Relates to the technical field of wind power generation prediction. The method comprises the steps that clustering is completed based on historical multivariate information of all stations in a wind power cluster, cluster virtual nodes are set, and the visual angle of global information is expanded for cluster modeling; and information propagation characteristics between nodes are explored based on a cluster prevailing wind direction. Constructing an adjacent matrix of the dynamic graph, and quantifying the dynamic evolution process of the cluster topology; and finally, mining cluster dynamic information by using a frequency domain channel attention mechanism and STGCN, and completing short-term power prediction of the wind power cluster. The method is a prediction method which considers multivariate information space-time diversity and is suitable for the day-ahead wind power cluster power, and is simple in calculation, high in prediction performance, clear in physical significance, effective in prediction result and high in practicability.

The present invention relates to a plain region wind turbine arrangement method based on a Web application system, comprising the following steps: (1) determining a prevailing wind direction; (2) setting parameters; (3) determining the position of a first wind turbine; (4) carrying out quincunx arrangement; and (5) completing the arrangement of wind turbines in the whole region. In the present invention, a computer algorithm and GIS technology are used, so that a large amount of terrain data can be processed and analyzed, and a region with high wind speed and stable wind flow can be rapidly recognized to determine an optimal arrangement position for wind turbine arrangement, thereby significantly improving the efficiency and quality of wind turbine arrangement.

The invention provides a balcony arbor layout optimization method based on a conditional diffusion generative model, and the method comprises the following steps: S1, obtaining summer climate parameters of a region where a fourth-generation housing project is located and a size and position relation between a hanging garden type balcony and an indoor space, generating project scene description data according to the summer prevailing wind direction, the opening orientation of the hanging garden type balcony and the communication condition of the hanging garden type balcony and each main room; the invention provides a balcony arbor layout optimization method based on a conditional diffusion generation model, and aims to establish a hanging garden type balcony arbor layout automatic generation and optimization method which can give consideration to the connectivity of a ventilation channel in a prevailing wind direction and the thermal comfort requirement of multiple rooms under the given summer climate and building geometric conditions of a fourth-generation house. The hanging garden type balcony arbor configuration is matched with natural ventilation of a building and an indoor thermal environment in a synergetic manner. The air garden type balcony arbor configuration can be optimized while the ventilation channel is guaranteed to be smooth, the indoor thermal comfort in summer is improved, and manual trial calculation is reduced.

The utility model relates to an offshore enclosure system which comprises a first enclosure belt and a second enclosure belt which are arranged between the interiors of a concave shoreline, a water body is arranged in the concave shoreline, and blue-green algae flows into the surface of the water body towards the inner side of the concave shoreline along the prevailing wind direction; the first enclosure belt is located on the inner side of the second enclosure belt and comprises a plurality of first enclosures arranged side by side, the lower end of the first enclosure belt sinks to the bottom of a water body, and a first interval is formed between every two adjacent first enclosures; the second enclosure belt comprises a plurality of second enclosures arranged side by side, the lower ends of the second enclosures sink to the bottom of the water body, and a second interval is formed between every two adjacent second enclosures, so that the maintenance and replacement cost of single enclosures is reduced, meanwhile, the first interval and the second interval are arranged in a staggered mode, and the first enclosure belt and the second enclosure belt jointly share the impact force of water body flowing; the possibility that the first enclosure belt and the second enclosure belt are impacted and damaged is reduced while the effect of enriching the blue-green algae is achieved, and the service life of the first enclosure belt and the service life of the second enclosure belt are prolonged.

The present invention discloses a method, apparatus, terminal device, and computer-readable storage medium for evaluating the wind resistance of distribution network tower structures. The method comprises: obtaining meteorological and topographical data of the distribution network tower to be evaluated; the meteorological data includes temperature, humidity, wind speed, and rainfall intensity; the topographical data includes land type, slope, windward or leeward slope, and the angle between the prevailing wind direction and the line direction in winter; inputting the meteorological and topographical data into a neural network model, so that the model generates soil shear strength based on the meteorological and topographical data; determining the ultimate overturning moment and the corresponding critical wind speed based on the soil shear strength; and determining the wind resistance of the distribution network tower to be evaluated based on the critical wind speed. By implementing the present invention, the impact of rainfall on soil can be taken into account, improving the accuracy and reliability of the evaluation.

The application discloses a kind of desert concentrated salt water solar salt local climate improvement system, belong to ecological engineering and the cross technical field of climate improvement.System includes the large-area solar salt evaporation pond group arranged in inland desert area, the wind tunnel acceleration evaporation distribution arranged along prevailing wind direction, and the ecological gain area of downwind direction.The present application utilizes the super-high evaporation capacity of inland desert area, and the large amount of water vapor generated during the solar salt process is transported to the downwind desert area through the wind tunnel acceleration distribution, continuously increases the local atmospheric water content and air relative humidity, triggers local rainfall increment, so that the annual precipitation of downwind area exceeds the survival threshold of desert vegetation, and promotes the natural recovery of native vegetation.At the same time, large-area evaporation water surface absorbs solar radiation heat, combined with vegetation carbon fixation, forms a significant carbon sink effect.

The application provides a generation method of a solstice seal based on parameterized modeling and azimuth coupling symmetry, and relates to the technical field of seal design. The generation method of the solstice seal determines a yin-yang background color according to astronomical characteristics of solstice origin and a parameter according to a season where the solstice is located, and generates a normalized boundary curve. The generation method calculates a solstice prevailing wind azimuth based on meteorological data. The generation method divides a main area and a remaining area according to a season parameter, and calculates character coordinates. The generation method applies a vertical symmetry criterion to layout solstice characters in the remaining area, and verifies vertical symmetry and minimum spacing constraints. The application can automatically generate a solstice seal meeting the requirements of traditional culture according to scientific genes, cultural backgrounds and natural characteristics of the 24 solar terms, through accurate modeling and optimization calculation.

Methods and apparatus for detecting and measuring gas flow are disclosed, in which lidar range information acquired during detection of a gas using a lidar sensor is used together with prevailing wind data to determine local wind data for a leak location. This local wind data, which can include one or more vector or 3D wind models, is used to determine flow rates.

A floating wind turbine installation including an asymmetric floating wind turbine structure that is tethered to the floor of a body of water by a mooring system. The floating wind turbine structure includes a wind turbine mounted on a semi-submersible floating platform, and is oriented such that the wind turbine is positioned on an upwind side of the centre of mass of the floating wind turbine structure when the wind approaches the wind turbine structure in the direction of the prevailing wind at the location of the wind turbine installation.

The invention belongs to the technical field of anti-seismic design of high-rise structures, and provides a method for reinforcing horizontal cracks in the middle-upper portion of a solar heat absorption tower and the solar heat absorption tower. The method comprises the steps that the height of a concrete cylinder in the heat absorption tower is determined, and a profile steel reinforced concrete section is determined at the preset position of the middle-upper portion of the concrete cylinder according to the height; a plurality of pieces of H-shaped steel are arranged in the circumferential direction of the section steel reinforced concrete section; for an area without a leading direction of wind load, the H-shaped steel is uniformly arranged in the circumferential direction of the concrete barrel, and the circumferential distance between the adjacent H-shaped steel is determined according to an earthquake acceleration value; for an area with the prevailing wind direction, the H-shaped steel is non-uniformly arranged in the circumferential direction of the concrete barrel, and directional correction is conducted on the circumferential distance according to the prevailing wind direction; and when the reinforcing position, the layout form and the number of the H-shaped steel are determined, the structural characteristics, the stress condition and the field wind load condition of the heat absorption tower are comprehensively considered, and the problem of too high cost is avoided on the basis of ensuring the reinforcing effect.

The present disclosure relates to methods for operating wind turbines (10) and charging one or more auxiliary power sources (84) for providing auxiliary power to one or more wind turbines (10). A method comprises pitching the wind turbine blades (22) to a predetermined idling pitch angle such that the wind turbine generator (42) produces power for charging one or more auxiliary power sources (84) above a predetermined wind speed. The method further comprises keeping the pitch angle (25) of the blades (22) at the idling pitch angle and charging the auxiliary power sources (84) when a prevailing wind speed reaches or exceeds the predetermined wind speed.

The invention discloses a method for finely measuring and calculating the developable capacity of a wind power installation technology in a specified area, and the method comprises the following steps: S1, obtaining the geographic information and wind resource data of a target area, and superposing a restrictive factor layer to obtain available land resources; s2, dividing available land into a mountain land type and a flat land type based on topographic features; s3, preferentially extracting a ridge line corridor of a mountain type, and performing mountain unit arrangement in combination with a main wind direction and a fan wake flow model; s4, updating the available boundary of the flat ground type based on the wake flow influence area of the mountain unit, and performing boundary recursive unit arrangement in the flat ground type; s5, matching a corresponding model according to the wind speed data of the arranged point positions; and S6, accumulatively calculating the total installed capacity. According to the method, on the premise that the terrain and wake flow arrangement rule is met, the technology developable quantity of wind power installation can be rapidly and automatically measured and calculated in a large range.

The invention provides a high-altitude seismic wave data acquisition method and system, and particularly relates to the technical field of deployment modes of physical noise reduction devices of high-altitude seismic wave sensors. According to the method, a leeward slope stable area judgment criterion is defined based on digital elevation model data and historical wind field data of a target area, a seismic sensor deployment point is determined by analyzing the terrain slope direction and the like, a seismic sensor and an anemometer are installed, and an angle-adjustable wind guide plate is installed at the preset distance of the windward side of the deployment point; and the deflection angle is dynamically adjusted according to the real-time prevailing wind direction data. A seismic sensor is triggered to collect continuous seismic wave data, current wind speed data is recorded synchronously, and when the wind speed exceeds a preset threshold value, a timestamp mark is embedded to form a segmented mark data set. And marking and positioning the marked data segment according to the timestamp, only carrying out noise reduction processing on the data segment, and outputting the seismic wave data after noise reduction. The method solves the problem that the wind-induced vibration noise is increased in a high-altitude dynamic wind field environment, and improves the signal-to-noise ratio of seismic signals.

The invention discloses a fire-fighting unmanned aerial vehicle autonomous patrol system and method based on the Internet of Things, and relates to the technical field of intelligent fire fighting, and the method comprises the steps: converging fixed Internet of Things sensors, unmanned aerial vehicle airborne sensor sensing data and unmanned aerial vehicle cluster state data, processing the data into a standardized data set, dividing park monitoring nodes, and calculating a comprehensive risk value; constructing a weighted directed dynamic risk map by combining the node space relationship, the distance and the environment prevailing wind direction; simulating risk propagation based on a graph, identifying key nodes to form a key check set, determining a routine inspection set, and generating a differentiated task set; calculating task priority and execution cost, establishing a collaborative task allocation model with maximized system overall efficiency, solving the collaborative task allocation model, and generating a task allocation scheme; the system comprises corresponding function modules, realizes accurate risk identification and intelligent task distribution, improves the patrol efficiency, and guarantees the fire safety of the park.

The invention discloses an intra-day scale extreme rainfall process identification and evaluation method, which relates to the technical field of extreme rainfall identification, and aims at plateau-mountain-plain complex terrains in Sichuan, grid units are divided through a regular network, vertical layers are subdivided, and key convection heights are accurately identified in combination with terrain parameters and atmospheric parameters. Constructing a regional extreme rainfall risk index of the ith grid unit coupled with convection effective potential energy and water vapor flux net income and expenditure, and solving the problems that the traditional administrative region division precision is low and single parameter evaluation is inaccurate; tracking along a prevailing wind direction and a water vapor channel to form a feature region path set, and pre-judging an extreme rainfall downstream propagation path; based on the ratio, average intensity and duration of extreme rainfall pulse events in the path and a dynamic correction pre-strategy, the upgrading observation and material allocation of the high-risk path and the reasonable degradation of the low-risk path are carried out, the resource waste is avoided, and the accuracy of intraday scale extreme rainfall identification is improved.

The present invention is a one-dimensional sonic anemometer paired with a tail vane that continuously rotates the sonic anemometer to be coaligned with the prevailing wind. The one-dimensional sonic anemometer being coaligned with the wind vector can measure the total wind speed directly with the wind direction measured by detection of the relative orientation of the instrument with respect to North as the instrument is held into the wind. Rather than a conventional two-dimensional sonic anemometer, the invention is a hybrid one-dimensional sonic anemometer with a mechanical wind direction measurement.

The invention relates to a method for spreading a spreading material mixture (M) comprising several spreading materials (S1, S2) using an agricultural centrifugal spreader (1), which has at least two spreading devices (2, 3) arranged at different spreading heights (H1, H2) for spreading one spreading material (S1, S2) each, and a wind sensor (6) for detecting wind conditions (W), wherein the prevailing wind conditions (W) during spreading are detected and setting parameters (E1, E2, E3, E4, E5) of the spreading devices (2, 3) are set to generate a wind-independent spreading pattern (F) depending on the detected wind conditions (W), wherein the setting parameters (E1, E2, E3, E4, E5) of the spreading devices (2, 3) are set differently depending on the respective spreading height (H1, H2).

The invention provides an environmental wind field-oriented cascaded low-altitude torrent probability prediction method, and belongs to the field of atmospheric environment and weather forecast. According to the invention, a cascaded prediction means is adopted to realize driving by sea level air pressure field data, and a scheme for predicting whether low-altitude torrent occurs or not and the probability of the prevailing wind direction is realized, wherein the scheme is rapid, efficient, lightweight and capable of being updated in a rolling manner. Comprising the following steps: S1, identifying low-altitude jet stream and extracting a prevailing wind direction; s2, screening key space modals significantly related to the low-altitude torrent; s3, constructing a multi-classification logistic regression model; s4, constructing a time sequence prediction model; s5, real-time data assimilation and principal component value prediction are carried out; step S6, low-altitude jet stream probability prediction; and S7, real-time and rolling updating of a prediction result is carried out.

This invention discloses a segmented assessment method for transmission lines based on the coupling of micro-topographic axis and wind direction. The method includes the following steps: segmenting the transmission line and calculating the axial azimuth of each segment; determining the axial azimuth of the micro-topographic axis, obtaining the prevailing wind direction angle at the location of the micro-topographic axis, and calculating the minimum axial angle between the two; calculating the normal relative elevation difference index of the micro-topographic axis; calculating the spatial relationship between each transmission line segment and the micro-topographic axis; and coupling the minimum axial angle, normal relative elevation difference index, and spatial relationship between each transmission line segment and the micro-topographic axis to construct a multi-dimensional risk profile of the transmission line segment. This application enables refined analysis of different line segments, avoids the problem of spatial information averaging caused by overall analysis, and thus significantly improves the spatial accuracy of transmission line assessment in complex terrain areas.

The invention relates to the technical field of data processing, in particular to an AI new energy power prediction method, which comprises the steps of constructing an upstream candidate station set; taking the target station as a center, delimiting a radius range in the upstream direction of the prevailing wind direction, obtaining actually measured wind speed data of adjacent stations in the range, and forming an upstream candidate station set; for each upstream candidate station, calculating the spatial-temporal correlation between the upstream candidate station and the target station, and selecting 1-3 optimal upstream target stations; constructing a dynamic wind speed correction model; based on the screened optimal upstream target station, constructing a dynamic wind speed correction model taking the NWP forecast wind speed as a reference and taking the actually measured wind speed of the upstream station as a core; and constructing and applying a power mapping model, and outputting final power prediction. According to the invention, through upstream and downstream linkage, wind speed correction is rapidly carried out on the downstream electric field by using real-time change of the upstream wind speed, forecast wind speed data is adjusted in time, and a more accurate data basis is provided for power prediction.

The invention discloses a city updating planning system and method based on city space climate adaptability, and relates to the technical field of city updating planning, and the system integrates old area topographic data, water system distribution data and building micromorphology data, constructs an old area three-dimensional space model, analyzes a dominating mechanism of terrain fluctuation on local airflow, and improves the urban updating planning efficiency. Identifying a cold air generation area and a heat island gathering area, drawing a wind environment base map, identifying an air flow retardation area and a heat accumulation core area based on the wind environment base map, simulating an air induction path in combination with a summer prevailing wind direction, simulating a cold wind permeation area in combination with a winter prevailing wind direction, and combining a proper temperature of local residents; according to the method, through combination of three-dimensional data integration, airflow mechanism analysis, precise path simulation and resident appropriate temperature, the precision and practicability of old area ventilation corridor planning are remarkably improved.

According to the coastal zone blue algae treatment system and method, a circle of retaining wall is arranged on the outer side of a flat shoreline, and a gap is formed between the outer side of the retaining wall and the flat shoreline. The blue-green algae are blown by the prevailing wind, one part drifts along the outer side surface of the retaining wall and the surface of one side, away from the prevailing wind direction, of the retaining wall, and the other part is blown by the prevailing wind and drifts along the surface of one side, close to the prevailing wind direction, of the retaining wall. The flowing blue-green algae can sink by the water inlet when passing through the algae control well, cannot float upwards and finally sinks into the sludge at the bottom of the water body, so that the situation that the blue-green algae gather and even harden on the side of the retaining wall connected with the water body is reduced. The shoveling and pushing ship moves towards the algae control well, hardened blue-green algae around the algae control well is pushed into the algae control well through the shoveling part, the blue-green algae gathered on the outer side of the level shoreline is thoroughly treated, the treatment efficiency is high, and the water quality of the area outside the level shoreline and the life quality of residents along the bank are guaranteed; and it is guaranteed that the wetland area in the retaining wall can normally achieve the landscape greening and water body purifying effects.

This invention provides a method and system for analyzing the relationship between terrain slope and wind speed acceleration effect under prevailing wind direction. The method includes: determining the terrain slope under prevailing wind direction based on hillside terrain parameters within the range of the prevailing wind direction angle; obtaining the wind speed acceleration ratio corresponding to the hillside terrain based on fluid simulation analysis; and constructing a relationship curve between the terrain slope and the wind speed acceleration ratio based on the terrain slope and the wind speed acceleration ratio. The method provided by this invention constructs a relationship curve between the terrain slope and the wind speed acceleration ratio under prevailing wind direction using the terrain slope determined by hillside terrain parameters and the wind speed acceleration ratio obtained from simulation analysis. This provides data support for analyzing the intrinsic relationship of wind speed acceleration effect caused by hillside slope and provides a technical path for directly obtaining the wind speed acceleration ratio through hillside slope.

This invention discloses an intelligent method for excavating urban ventilation corridors based on high-precision oblique photogrammetry, comprising the following steps: Step S1: Oblique photogrammetry is used to acquire oblique photogrammetry images of the target city via aerial photography to obtain a Digital Surface Model (DSM) and a Digital Elevation Model (DEM); Step S2: The difference between the DSM and DEM is used to extract the three-dimensional surface data of the target city; Step S3: Multiple prevailing wind directions of the target city are acquired, and the windward area density of each prevailing wind direction is calculated based on the three-dimensional surface data obtained in Step S2; Step S4: A template is designed based on the prevailing wind direction information, and template matching is performed based on the windward area density of the prevailing wind direction to find the continuous area within the windward area density range as urban ventilation corridors; Step S5: Based on Step S4, the urban ventilation corridors are automatically excavated to extract urban ventilation corridors that meet preset requirements.

The invention provides a galloping test method and system for an overhead transmission line. The system comprises a first tower, a second tower and a third tower which are installed in a flat and wide land parcel. A plurality of wires are arranged between the first tower and the second tower and between the first tower and the third tower. The second tower frame or the third tower frame is arranged on the preset track, and the second tower frame or the third tower frame can move along the preset track. According to the invention, the movable tower and diversified wire arrangement schemes are ingeniously designed on a flat and wide land parcel where uniform and stable horizontal wind of 5-15 m / S is easy to form, so that the span of the test wire and the included angle between the test wire and the prevailing wind direction can be flexibly adjusted, and various complex wire galloping working conditions are formed in a natural wind field. According to the design, the flexibility of the test and the use efficiency of land parcels are remarkably improved, and intuitive comparative research on the galloping states and the anti-galloping effect of the wires with different parameters can be realized under the same wind condition at the same time.

This invention discloses a semi-active control omnidirectional magnetorheological elastomer (MLE) vibration damping device and control method suitable for wind turbine towers, comprising an electric drive turntable module, a MLE vibration damping module, and a pressure-magnetic synergistic stabilization module. The electric drive turntable module uses a pressure sensor ring to identify wind direction, driving the turntable to align the vibration damping module's vibration direction with the wind direction, and periodically oscillating near the prevailing wind direction to cope with turbulence. The MLE vibration damping module achieves synchronous movement of multiple sets of MLEs through a linkage mechanism, using electromagnetic fields to adjust stiffness. The pressure-magnetic synergistic stabilization module senses upward force through a pressure sensor and generates a balancing magnetic force to ensure stable operation. This device employs a dual-variable intelligent control system combining the variable stiffness and damping characteristics of the MLE with rod adjustment, optimizing rod states and unified current in real time based on spectrum analysis to achieve wide-bandwidth, precise, and efficient semi-active vibration damping, effectively improving the vibration resistance of wind turbine towers.

The invention discloses a wind speed and wind direction combined prediction method suitable for a bridge structure monitoring system, and the method comprises the steps: S1, collecting the time series data of the wind speed and wind direction in the bridge structure monitoring system, and carrying out the normalization processing; s2, calculating the prevailing wind direction of the bridge structure monitoring point according to the historical wind direction data, and decomposing the wind speed into a transverse wind component and a longitudinal wind component along the prevailing wind direction; s3, respectively establishing an LSTM neural network model for the transverse wind component and the longitudinal wind component, and performing training; s4, respectively predicting a transverse wind component and a longitudinal wind component by utilizing the trained LSTM model; and S5, combining the transverse wind component and the longitudinal wind component obtained by prediction to obtain wind speed and wind direction prediction results. The method can significantly improve the wind direction prediction precision, has real-time performance and engineering applicability, is suitable for strong wind monitoring and structure operation safety early warning in a bridge structure monitoring system, and is also applied to the disaster prevention safety field of high-rise buildings, railways and other infrastructures.

This application provides a wake control method, device, storage medium, and program product for wind farms, relating to the field of new energy technology. A wind farm includes at least one turbine group, with the turbine connections parallel to the prevailing wind direction. The wake control method includes: determining whether any turbine group within the wind farm is affected by wake; for a target turbine group affected by wake, determining the turbulence intensity at the location of each turbine in the target turbine group; identifying turbines with turbulence intensity greater than a turbulence intensity threshold as target turbines; if the proportion of target turbines in the target turbine group is greater than a proportion threshold, then performing wake control on the target turbine group based on an axial induction factor control strategy; if the proportion of target turbines in the target turbine group is less than or equal to the proportion threshold, then performing wake control on the target turbine group based on a wake redirection control strategy. This application can reduce wake interference in wind farms and improve the overall power generation efficiency of wind farms.

The invention belongs to the technical field of power distribution equipment safety protection, and provides a power distribution equipment external force damage prevention analysis method and device based on a multi-modal large model, a regional three-dimensional model is constructed on the basis of the regional environment where historical power distribution equipment is located, the trend of the regional environment where the historical power distribution equipment is located can be recognized, and the reliability of the power distribution equipment is improved. Data support is provided for follow-up prevailing wind direction screening, so that a targeted overhead cable line plan can be formulated, the service life of an overhead cable is prolonged, and the prevailing wind directions are screened out according to historical monitoring data obtained in multiple historical monitoring periods in combination with a regional three-dimensional model. And the strong and weak narrow tube effect sub-regions are further screened out, which canyon sub-regions are easier to form the strong narrow tube effect under the prevailing wind direction condition can be identified, and which canyon sub-regions have the risk that strong wind vibration caused by the narrow tube effect can aggravate metal fatigue of the overhead cable, increase strand breakage and wire breakage and the like can be predicted.