Calculating method for wind power field receiving capability of power grid

A calculation method and technology for wind farms, which are applied in wind power generation, parallel feeding arrangement of a single grid, etc., can solve the problems of complex solution process and many limiting factors, and achieve simple solution process, avoid power disturbance, and solve power imbalance of power grid. effect of the problem

Active Publication Date: 2013-08-07
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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Problems solved by technology

[0004] Aiming at the problem that the calculation of the capacity of the grid to accommodate wind farms mentioned in the above background technology is complicated due to many limiting factors, the present invention proposes a calculation method for the capacity of the grid to accommodate wind farms

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  • Calculating method for wind power field receiving capability of power grid
  • Calculating method for wind power field receiving capability of power grid
  • Calculating method for wind power field receiving capability of power grid

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Embodiment Construction

[0030] The preferred embodiments will be described in detail below in conjunction with the accompanying drawings. It should be emphasized that the following description is only exemplary and not intended to limit the scope of the invention and its application.

[0031] Concrete steps of the present invention are as follows:

[0032] First, according to the daily power output curve of the wind farm output power, the ratio d of the maximum change of the wind farm output power to the rated capacity of the wind farm is obtained, that is, the maximum change percentage of the wind farm output power caused by the wind speed;

[0033] Then obtain the thermal reserve capacity percentage r of the local grid, the thermal reserve capacity coefficient μ (value range: 0:1.0) provided by the grid to cope with the power output fluctuation of the wind farm, and the maximum power generation load of the grid provided by the local grid

[0034] The absolute expression for determining the capac...

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Abstract

The invention discloses a calculating method for the wind power field receiving capability of a power grid and belongs to the technical field of wind power. The calculating method comprises the following steps: acquiring a ratio of the maximum variation of output power of a wind power field caused by wind speed to the rated capacity of the wind power field according to a daily power output curve of the output power of the wind power field; then acquiring the spinning reserve capacity percentage of a local power grid, a spinning reserve capacity coefficient provided by the power grid for dealing with a power output fluctuation factor of the wind power field as well as the maximum generating load of the power grid; and finally solving the wind power field receiving capability of the power grid. The calculating method provided by the invention has the advantages of simple and direct solving process, strong adaptability and convenience in practical engineering application. The calculatingmethod provided by the invention is beneficial to estimation on the wind power grid-connected allowed capacity in the planning stage of the power grid.

Description

technical field [0001] The invention belongs to the technical field of wind power, and in particular relates to a calculation method for the capacity of a grid to accommodate wind farms. Background technique [0002] The output power of wind farms is obviously affected by wind resources, and has the characteristics of randomness, volatility and intermittency. When the wind speed changes drastically, the connection of wind farms will affect the normal operation of the power grid. Therefore, it is necessary to reasonably determine the ability of the corresponding power grid to accept the wind farm during the construction planning process of the wind farm, so as to realize the reliable, high-quality, and economical operation of the local power grid (the power grid connected to the wind farm). The main constraints on determining the capacity of the local grid to accept wind farms in the existing research include: installed capacity of the local grid, load characteristics, grid s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/38
CPCY02E10/76
Inventor 李鹏李晓春李雨薇王伟
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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