Method and system for evaluating fan site selection risk caused by high slope terrain

Abstract

The invention discloses a method and a system for evaluating fan site selection risks caused by high slope terrain, and belongs to the technical field of wind power plant site selection. The method comprises the following steps: firstly, determining pre-selected machine sites needing supplementary site selection risk assessment; then surveying and mapping the microtopography in the peripheral range of the point location of the high slope phenomenon caused by the construction in the preselected machine location to obtain the elevation data of the microtopography; measuring roughness distribution data in the microtopography range; performing refined calculation and analysis on important wind parameters in the complete annual wind measurement data to obtain important wind resource parameters; carrying out refined modeling calculation on the wind resource distribution data of the preselected machine site; and finally, according to a calculation result, evaluating the influence of the high slope terrain on the generating capacity of the wind turbine generator at the preselected machine position, and performing economic benefit calculation again according to an analysis result. According to the method, the risk of fan site selection caused by the high slope terrain can be systematically evaluated, the possibility of investment errors is reduced, and the economic benefit of project investment is ensured.

Description

technical field [0001] The invention belongs to the technical field of wind farm site selection, and in particular relates to a method and system for evaluating the risk of wind turbine site selection caused by high slope topography. Background technique [0002] In recent years, the wind power industry has developed rapidly. With the ebb of relevant subsidy policies, the successful implementation of wind power projects has put forward stricter requirements for related cost control. On the other hand, a large number of areas rich in wind resources are located in hilly and mountainous areas. With the in-depth development of wind power projects in plain areas, more new wind power projects are selected in areas with complex terrain, which also brings challenges to the design and development of wind farms. A certain degree of difficulty. During the construction process, in order to save costs, the owners and design units often dig the top of the hill to meet the wind turbine fo...

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Problems solved by technology

[0003] Facts have proved that wind turbines located next to high slopes, especially downstream of the main wind direction of high slopes, are often seriously affected by this micro-topography. The type selection is often not fully considered, resulting in lower than expected income after the wind farm is connected to the grid, resulting in greater investment risks

In addition, there is currently no assessment method for wind turbine site selection risk caused by high slope terrain on the market, which also increases the difficulty of risk assessment in the early design

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