Active power control method for dynamic adjustment and automatic recovery of upper limit of active power generation in wind farms

Abstract

The invention provides an active control method for active power generation upper limit dynamic adjustment and automatic recovery of a wind farm, and belongs to the technical field of operation and control of a new energy access power system. The method includes the steps of when each active control instruction cycle arrives, collecting active control instructions issued to each wind farm in a previous cycle from an active dispatch system of a power grid dispatch center in real time, grid-connected point active power real-time values of the wind farms at the current moment and current available output estimated values of the wind farms; and based on deviations between the active power real-time values of the wind farms and active power control instruction values, determining whether the wind farms need to dynamically adjust the active power generation dynamic upper limit thereof, and then combined with the real-time available power constraints of the wind farms, adjusting the limit. According to the invention, the maximum output limit of the wind farms is dynamically adjusted to release to other wind farms the system space occupied by some wind farms due to the inaccurate estimatedvalues of the currently available output so as to reduce the wind loss of the system.

Description

technical field [0001] The invention belongs to the technical field of operation and control of a new energy access power system, and particularly proposes an active power control method for dynamic adjustment and automatic recovery of the upper limit of active power generation in a wind farm. Background technique [0002] Wind energy is a kind of abundant and renewable clean energy. Reasonable and effective use of wind energy is one of the effective ways to adjust the energy structure and solve the energy crisis. China is rich in wind energy resources, and the huge reserves of wind energy that can be developed and utilized provide a good resource base for the rapid development of the wind power industry. In recent years, China's wind power installed capacity has continued to increase, and the scale of wind power grid connection has gradually expanded. Due to the unbalanced distribution of wind energy resources, China's wind power is mainly concentrated in the "Three Norths...

AI Technical Summary

Problems solved by technology

If the current available output estimate sent by wind farm i is If the deviation is too large or there is a falsely high report, the active output of wind farm i cannot reach or approach the control target value, then wind farm i wastes the space for the grid to accommodate wind power, and the system cannot achieve the goal of maximizing wind power consumption

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