Control method of active power of clustered wind power plants

A technology of active power and control method, which is applied in the field of active power control of cluster wind farms, and can solve problems such as underutilization of the capacity of the grid to accommodate wind power, underutilization of active output of wind farms, waste of wind power installed capacity, etc.

Active Publication Date: 2015-04-29
SOUTHEAST UNIV
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Problems solved by technology

In order to ensure the safety and stability of the grid, dispatchers often leave a large safety margin in the operation control, which leads to the underutilization of the maximum wind power capacity of the grid. Even when the grid is short of power, the active power of the wind farm The output cannot be fully utilized, which undoubtedly wastes the installed capacity of wind power

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  • Control method of active power of clustered wind power plants
  • Control method of active power of clustered wind power plants
  • Control method of active power of clustered wind power plants

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Embodiment Construction

[0041] The method of the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0042] The cluster wind farm active power control method of the present invention comprises the following steps:

[0043] Step 1) is the initialization data and collected data of the cluster wind power active power control system. The collected data information includes: the output of the current i-th wind farm collected from the wind farm dispatching center The maximum output of the i-th wind farm is The predicted active output value of the wind farm in the next control cycle predicted by the i-th wind farm power prediction device Collect the current load data of the power system from the central dispatch The planned value of active power currently issued to each wind farm And the system load forecast value of the next control period predicted by the load forecasting system

[0044] Step 2) is the solution of the model. This ...

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Abstract

The invention discloses a control method of active power of clustered wind power plants, which is used for calculating a planned value of active power distributed to each wind power plant, issued by a provincial (municipal) level scheduling mechanism. The method for calculating the distributed active power provided by the invention can determine the active power planned value of each clustered wind power plant in the next control period, and the total capacity of wind power penetration into a power grid is calculated in real time, so that the power of each clustered wind power plant is maximized under the premise that an electrical power system operates safely and stably is guaranteed. According to the invention, many-sided factors such as the change of the total capacity of wind power penetration into the power grid, the current power of each wind power plant, wind power forecast conditions and load forecasting conditions, the planned value of each wind power plant is calculated in the fixed period and is sent to each wind power plant, the planned value is an upper limit value, the wind power plant can freely generate electricity when the current value is below the planned value, and an application is needed when the current value is above the planned value. According to the invention, the generating efficiency of the wind power plants is improved furthest, and wind power penetration into the power grid system is maximized.

Description

technical field [0001] The invention belongs to the technical field of electric power systems and automation thereof, and relates to a method for controlling the active power of clustered wind farms. Background technique [0002] Wind energy is a kind of clean energy, and it is also a kind of energy with the characteristics of volatility, randomness and intermittency. Wind farms are often far away from the load center, which increases the uncertainty of the power grid flow. It is necessary to balance and suppress wind power fluctuations through the regulation of conventional power sources and the installation of energy storage systems. With the continuous increase of installed capacity of wind farms, how to effectively control the active power output of each wind farm and formulate control targets that can not only match the active power control capabilities of wind farms, but also reduce the pressure of active power and frequency adjustment brought by wind farms to the powe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/46
CPCY02E10/76
Inventor 高赐威陈曦寒
Owner SOUTHEAST UNIV
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