Active power control method for enhancing wind power plant operation economy

Abstract

The invention discloses an active power control method for enhancing the wind power plant operation economy. Priority ordering of wind power plant sets is performed based on the operation economy, andpower control is performed on the wind power plant sets according to the priority, wherein the priority is ordered according to the descending order of the operation economy indicators of the sets. The active power control method is fast in operation and timely in response so that the economic operation of the wind power plant is optimized on the basis of meeting the requirements of network sidescheduling and long-term development of the wind power industry is facilitated.

Description

technical field [0001] The invention relates to the technical field of wind power control, in particular to an active power control method for improving the operating economy of a wind farm. Background technique [0002] The energy industry is in a period of transformation. The scale of new energy and the cleanliness of traditional energy are the two key points of transformation. The difficulty in connecting new energy to the grid is mainly due to the fact that new energy cannot achieve intelligent optimal scheduling and Economic Operation. As the scale of wind turbines participating in grid connection continues to increase, the instability of wind turbine operation, especially the fluctuation of active power, has caused a certain impact on the grid. The current method is that the wind farm is directly regulated by the AGC of the power grid, but the active power control strategy of the wind farm based on the stability of the grid side may cause a large number of wind curtai...

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Problems solved by technology

[0002] The energy industry is in a period of transformation. The scale of new energy and the cleanliness of traditional energy are the two key points of transformation. The difficulty in connecting new energy to the grid is mainly due to the fact that new energy cannot achieve intelligent optimal scheduling and Economic Operation

As the scale of wind turbines participating in grid connection continues to increase, the instability of wind turbine operation, especially the fluctuation of active power, has caused a certain impact on the grid

The current method is that the wind farm is directly regulated by the AGC of the grid, but the active power control strategy of the wind farm based on grid-side stability may cause a large number of curtailed wind, frequent start-up and shutdown of units, fatigue operation of units, and severe grid loss, etc. Affect the economic operation of the wind farm itself, which will have a huge impact on the long-term development of the wind power industry

[0003] In the research on the power optimization strategy of wind farms, it is basically divided into three categories. The research of wind farms participating in AGC frequency modulation is mainly to meet the requirements of the power grid. The actual situation of wind farms is not fully considered, and large-scale wind abandonment is prone to occur. Consequences; the energy storage device has limited regulation of the active power of the wind farm, and the energy storage technology is still in development and has not been widely promoted, so the research results are difficult to apply on site; the research on the optimal dispatch of the wind farm power system is mainly in the power distribution process Seek an optimal algorithm, optimize the particle swarm algorithm, neural network algorithm, etc., and optimize power distribution, but the cost of complex algorithms is the increase of computing time and the delay of response speed, which is difficult to meet the actual operation requirements of wind farms

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