A wind farm participation system coordination method with differentiated real-time frequency modulation capabilities of wind turbines

Abstract

The invention discloses a wind farm participation system coordination method with differentiated real-time frequency modulation capabilities of wind turbines, including the following contents: 1) wind turbines detect current wind speed and operation control information in real time, and dynamically classify according to wind speed and operation control information; 2) The fan matches the corresponding frequency modulation control strategy and frequency modulation parameters in real time according to the current classification; 3) The system detects the current frequency. The present invention performs dynamic classification according to real-time wind speed, rotation speed and unit control information, matches corresponding frequency regulation strategies and differentiated frequency regulation threshold parameters for different categories in real time, and adjusts frequency regulation thresholds of wind turbines under different working conditions from the wind farm and system level, through multi-category The coordination of the frequency setting value of the frequency modulation control realizes the frequency modulation priority of different types of power sources and the coordination among them, improves the system frequency stability with a small control and economic cost, and solves the problem of wind power participating in the primary frequency modulation of the power grid and coordinating with traditional units and DC frequency modulation The problem.

Description

technical field [0001] The invention relates to the technical field of electric power systems and automation thereof, in particular to a wind farm participation system coordination method with differentiated real-time frequency modulation capabilities of wind turbines. Background technique [0002] With the large-scale new energy grid-connected power generation, the penetration rate is gradually increasing, and new energy power generation is bound to replace some conventional energy generating units. At present, the doubly-fed variable-speed fan and the direct-drive permanent magnet fan commonly used in my country can not provide frequency support for the grid when the grid frequency changes because the control system completely decouples the speed of the unit from the frequency of the grid, and cannot participate in the primary frequency regulation of the grid. . Although wind turbines have inertia, they appear as "implicit inertia" to the grid, which cannot help the grid t...

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to provide a wind farm participation system coordination method with differentiated real-time frequency modulation capabilities of wind turbines, to solve the problem of wind power participating in primary frequency modulation of the power grid and coordinating with traditional units and DC frequency modulation problem, improve the frequency stability of the wind power centralized grid-connected area system

Images