Access capacity analysis method for wind farm access to power grid
A technology for accessing capacity and connecting to the power grid, which is applied to wind power generation, electrical components, circuit devices, etc., can solve the problems of large differences in output capacity of wind farms and inaccurate calculations, so as to avoid waste of resources, accurate calculations, and The effect of reducing the impact
Inactive Publication Date: 2017-03-08
CHINA WATER RESOURCES PEARL RIVER PLANNING SURVERYING & DESIGNING
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Problems solved by technology
[0006] The purpose of the present invention is to provide a method for analyzing the access capacity of wind farms connected to the power grid, aiming to solve the problem that in the prior art, the calculation of the connection capacity of wind farms connected to the power grid is determined by the power flow algorithm, and the calculation is not accurate enough And there is a large difference between the access capacity of the wind farm and the output capacity of the wind farm after it is put into operation
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[0020] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0021] The implementation of the present invention will be described in detail below in conjunction with specific embodiments.
[0022] The access capacity analysis method of wind farms connected to the power grid provided in this embodiment is used to accurately calculate the connection capacity of wind farms connected to the power grid, so that the output capacity of wind farms after they are put into operation is consistent with the capacity of wind farms that can be connected to the power grid. The access capacity of wind farms has little difference, thereby avoiding the waste of resources.
[0023] The access capacity...
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The invention relates to the technical field of wind farm and discloses an access capacity analysis method for a wind farm access to a power grid, in a condition of given short circuit capacity, the access capacity can be calculated through the following algorithm as shown in the description, wherein SRWT is rated capacity of a fan; flicker values of the whole wind farm can be computed and obtained through the formula; flicker values which pass specified standards and an optimized and adjusted flicker factor are put into the formula, the quantity of fans is obtained, and an access capacity value of the wind farm can be obtained further. In the analysis method, the access capacity of the wind farm access to power grid can be computed more accurately according to the optimization and adjustment for the flicker factor, then the access capacity of the wind farm can be computed more precisely, according to the above, there are relatively big differences between access capacity of a designed wind farm and sendout capacity of a wind farm put into production, the resource waste can be avoided, the wind resource can be utilized more reasonably, and the influence between the wind farm and the power grid can be reduced.
Description
technical field [0001] The invention relates to the technical field of wind farms, in particular to a method for analyzing the access capacity of wind farms connected to a power grid. Background technique [0002] At present, the domestic calculation of the connection capacity of wind farms to the grid still adopts the traditional algorithm of thermal power and hydropower connection to the grid, usually the power flow algorithm. [0003] The power flow algorithm adopts the summer large method and the winter small method for calculation. According to the load conditions of the grid lines and load nodes of the grid, the wind farm that the grid can bear is calculated, so as to calculate the access capacity of the wind farm to the grid. The result of the power flow algorithm It is the basis of power grid stability calculation and fault analysis. However, for wind power projects, the basic properties of power flow algorithms cannot be adapted. [0004] The impact of wind farms c...
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IPC IPC(8): H02J3/00H02J3/38
CPCH02J3/386H02J3/00H02J2203/20Y02E10/76
Inventor 胡立伟范英隆
Owner CHINA WATER RESOURCES PEARL RIVER PLANNING SURVERYING & DESIGNING