A wind farm station-level active power optimization method

Abstract

The invention belongs to the field of wind power generation and electric power scheduling technology, and especially relates to a station level active power optimization method of a wind power station. The station level active power optimization method of the wind power station includes the steps of: forming a station level power reduction control strategy for the wind power station; forming a station level power reduction distribution algorithm for the wind power station; and controlling the active power of the wind power station. According to the station level active power optimization method, on the premise of power reduction of the wind power station required by a scheduling side, in the single wind power station, how to reasonably coordinate each blower fan is researched, and an optimizing strategy and the power distribution algorithm of the power output demand at a power dispatching side are achieved, so that the blower fan number in the station is minimum, action times of a blower fan control mechanism is minimum, and the mechanical loss to the blower fans caused by repeatedly generator tripping and the phenomenon that the operation life is reduced caused by too much operation of a controller are reduced. The station level active power optimization method of the wind power station substantially decreases the generator tripping number in the wind power station and reduces the mechanical loss of the blower fans.

Description

technical field [0001] The invention belongs to the technical field of wind power generation and power dispatching, in particular to a method for optimizing active power at a wind farm station level. Background technique [0002] In recent years, wind power generation has developed rapidly. The single-unit capacity and scale of grid-connected wind farms have continued to expand. The penetration rate of wind power in the power grid has continued to increase. Effective control of wind farm output. As the link between the power system dispatching and the wind turbine control system, the station-level control of the wind farm takes a single wind farm as the control object, and regulates the output of each unit in the wind farm in real time according to the power requirements issued by the dispatching side. Make the output power of the wind farm meet the scheduling requirements. In actual operation, the most common scenario for power grid dispatching to control wind farm power ...

AI Technical Summary

Problems solved by technology

[0004] The above literature has laid the foundation for the research on active power control at the wind farm station level, but there are still the following deficiencies that need to be improved: (1) In the literature based on the classification of unit status, the classification standard of wind turbines is too single, and it is difficult to achieve different operations for each wind turbine Specific analysis of its characteristics leads to cumbersome power distribution algorithms and poor operability; (2) It is an effective and feasible method to establish wind turbine operation evaluation indicators and conduct comprehensive evaluation, but the existing literature does not specifically consider the power regulation of wind turbines in the index selection. The mechanical loss caused by the process and the difference in power regulation ability of fans at different wind speeds, and the evaluation method is relatively simple, so it is impossible to accurately evaluate the power regulation characteristics of each fan

Images