A method and system for adjusting active power based on wind farm economy

Abstract

The invention discloses a wind farm economy-based active power adjusting method and system. The method comprises the following steps: (A) dividing controllable priorities of all wind generator sets in a wind farm cluster according to the electricity price, and setting the wind generator set with low electricity price to be preferentially controlled high-priority set; (B) when an execution cycle T1 is reached, distributing stand-alone expected output power to all wind generator sets in the current controllable priority; (C) setting the minimum expected output power, and labeling the sets as controllable shutdown sets when the expected output power of the sets reaches the value; and (D) when an execution cycle T2 is reached, determining the shutdown order of the controllable shutdown sets according to the accumulated use frequencies of grid-connected switches of the sets and preferentially shutting down the set of which the grid-connected switch is low in accumulated use frequency. Active power adjusting control is carried out based on the wind farm economy; and the maximum profits of the wind farm and the minimum capital investment into wind turbine components can be achieved.

Description

technical field [0001] The invention relates to the technical field of wind power, in particular to an active power adjustment method and system based on wind farm economy. Background technique [0002] With the increasing maturity of wind power technology and the rapid increase in the proportion of wind power connected to the grid, wind power has the potential to compete with traditional conventional power generation. It is currently a new energy and renewable energy with the most development and utilization value and the most mature technology. After large-scale wind power is connected to the grid, due to the randomness and volatility of wind farm output power, power system scheduling and power quality are facing new problems. The research on the active power control algorithm of wind farm is of great significance to the power system dispatching and the guarantee of power quality. In order to effectively alleviate and restrain the negative impact of wind power grid-connec...

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Problems solved by technology

[0008] The purpose of the present invention is to provide an active power regulation method and system based on the economics of the wind farm, so as to optimize the active power regulation control based on the economics of the wind farm, realize the maximum profit of the wind farm and minimize the capital investment of wind turbine components, In order to overcome the shortcomings of the existing active power regulation method that considers single factors and affects the economic benefits of wind farms

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