A method for controlling the active power of a wind farm

Abstract

The invention relates to an active power regulation and control method for a wind power station. The method comprises the following steps that 1, whether or not regulation and control are need is judged, and if yes, the second step is started; 2, an active power regulation and control target value of the wind power station is calculated; 3, according to the active power regulation and control target value, calculated and obtained in the second step, of the wind power station, preset values of all fans of the wind power station are calculated and obtained; 4, the preset values, calculated and modified in the third step, of all the fans of the wind power station are issued to RTUs of all the fans and written into PLCs of the corresponding fans through predetermined communication protocols, and the power of the fans at this time is controlled; 5, based on a regulation and control result of the fourth step, whether or not regulation and control are still needed is judged according to the first step, if yes, regulation and control are conducted again according to the second step to the fourth step till the regulation and control requirement is met, and if not, regulation and control over the active power of the wind power station are completed within a scheduling period. According to the active power regulation and control method for the wind power station, a distribution method bycombining proportional distribution with priority distribution is adopted, maximum output of output power of the wind power station is achieved, continuous steady regulation and control are achieved,and the requirement of a scheduling system for the active power change rate of the wind power station is met.

Description

technical field [0001] The invention relates to the field of new energy wind power generation systems, in particular to a method for regulating and controlling the active power of a wind farm. Background technique [0002] In response to the energy crisis, countries are actively researching new energy technologies. Wind power has the advantages of being clean, environmentally friendly, and inexhaustible, and has been highly valued by countries. As far as my country is concerned, it is planned that by 2020, the installed capacity of wind power grid-connected will reach 200 million kilowatts. However, unlike the local consumption method, large-scale grid-connected wind power will bring huge impact to the grid due to its uncertainty. Therefore, the control accuracy of the dispatching system for the wind farm and the maximum power change rate of 10min and 1min Has strict requirements. [0003] Wind farm active power control is in the stage of exploration and development. Acti...

AI Technical Summary

Problems solved by technology

Manual control has shortcomings such as long response time, high labor cost, unreasonable distribution, and high error rate

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