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Power control method for wind power station

A power control and wind farm technology, applied in wind power generation, single-network parallel feeding arrangement, etc., can solve problems such as large-area faults in the power grid, uncontrollable wind power generation power, etc.

Inactive Publication Date: 2015-12-02
HENAN XINGZHI PATENT SERVICE CO LTD
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  • Application Information

AI Technical Summary

Problems solved by technology

In a power grid with a large proportion of wind power connected to the grid, the inherent characteristics of wind turbines are mostly asynchronous machines and the randomness and uncertainty of wind power, which to a certain extent have changed the original power flow distribution, line transmission power and system stability of the power grid. The overall inertia has a great impact on the active power balance and frequency stability of the power grid, and the uncontrollable power of wind power generation will cause large-scale faults in the power grid

Method used

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  • Power control method for wind power station
  • Power control method for wind power station
  • Power control method for wind power station

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Embodiment Construction

[0047] Such as figure 1 As shown, a power control method for a wind farm, in which the goal of wind farm power control is to control the active and reactive power output by the entire wind farm, so that the wind farm can undertake the frequency and voltage adjustment tasks like a conventional power plant, and reduce Impact on access to the grid. The wind farm control system is a separate control unit, which is responsible for receiving system scheduling instructions, measuring the electrical quantity of the access point PCC and the power that the wind turbine can output, and calculating and generating the control signal of each wind turbine. The system dispatcher sends the required control signal to the wind farm control system. The wind farm control system includes two control loops: active power control and reactive power control loops. The active power control loop is based on the wind farm active power controller and an auxiliary frequency control loop. The reactive pow...

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Abstract

The invention discloses a power control method for a wind power station. The power control method for the wind power station adopts a wind power station control system which comprises two control loops: an active power control loop and a reactive power control loop. Through the active power control and reactive power control of the wind power station, the power control method achieves active-reactive reasonable regulation, control and distribution when wind power generation equipment is accessed to a power grid, improves stability of the system, and reduces the incidence rate of faults.

Description

Technical field [0001] The invention relates to the technical field of wind power generation control, and specifically, to a power control method of a wind farm. Background technique [0002] With the continuous advancement of wind power technology, the single-machine capacity of wind turbines and the total installed capacity of wind farms continue to increase, and the proportion of wind power in the grid is also increasing. The form of wind farms connected to the grid has also changed from the early days. The development of the access to the distribution network has become a direct access to the high-voltage transmission network, and the degree of interaction between the wind farm and the power system is further deepened and the scope is further expanded. In power grids with a large proportion of wind power grids, wind turbines are mostly due to the inherent characteristics of asynchronous machines and the randomness and uncertainty of wind power. To a certain extent, they have ...

Claims

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Application Information

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IPC IPC(8): H02J3/46
CPCY02E10/76
Inventor 马新攀
Owner HENAN XINGZHI PATENT SERVICE CO LTD