An AGC optimization method for wind farms based on first-adjustment of fans

Abstract

The invention relates to a wind power plant AGC optimization method based on a preferentially adjusted draught fan. The method comprises the steps that (1) the total active power P of a wind power plant is worked out; (2) an AGC active power command P<AGC> issued by a power grid is read; (3) the difference value delta P of the real-time total active power of the wind power plant and the AGC command is worked out, specifically, delta P is equal to the absolute value of P-P<AGC>; (4) presuming that the absolute value of the active power change rate of the preferentially adjusted draught fan is r<preferentially adjusted>, an intra-field draught fan active power command issuing time interval T<intra-field> short enough is set, and a wind power plant active power control dead zone set value P<dead zone> is larger than the product of r< preferentially adjusted> and T<intra-field>; (5) whether the different value delta P exceeds the dead zone set value P<dead zone> or not is judged, if the absolute value of P-P<AGC> is smaller than or equal to P<dead zone>, the step (2) is carried out repeatedly, if P-P<AGC> is larger than P<dead zone>, the power decrease control step (6) is carried out, and if P<AGC>-P is larger than P<dead zone>, the power increase control step (7) is carried out. Through the method, the wind power AGC response time is shortened, static deviation in the active power adjusting process is reduced, and accurate control over wind power active power is facilitated.

Description

technical field [0001] The invention belongs to the technical field of automatic power generation control, in particular to an AGC optimization method of a wind farm based on a first-adjusted fan. Background technique [0002] With the continuous increase of wind power grid-connected capacity, integrating wind power into the AGC system has become a must to ensure both wind power consumption and grid security. The realization method and adjustment performance of the AGC function of the wind farm are quite different from the traditional AGC unit. This brings new problems to the AGC control work of wind farms. [0003] The AGC function of the wind farm is generally realized by establishing an AGC substation in the wind farm. On the one hand, the AGC sub-station of the wind farm has established a communication channel between the wind farm and the dispatching AGC master station, so that the wind farm has the function of exchanging information with the master station; The acti...

AI Technical Summary

Problems solved by technology

The process of substation data processing is limited by factors such as calculation rate, hardware configuration, and data refresh frequency of each interface, and often takes a long time

This makes the AGC response time of the wind farm longer than that of the traditional thermal power unit, resulting in a large hysteresis, which is manifested as a large static deviation in the AGC control, and the AGC performance of the wind farm is not good.

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