Grid-connection control method for wind generator sets

Abstract

The invention relates to a grid-connection control method for wind generator sets. The adopted system comprises two parts, namely a flexible interconnect network for the wind generator sets and a control part; an upper computer transmits parameters to a route controller; the route controller outputs a control signal to all route converters; one route converter executes connection or disconnectionwith the other route converters and achieves integration and redistribution of all input current; and power parameters of the flexible interconnect network are transmitted to the upper computer to display, thereby achieving interconnection of the wind generator sets and flexible changes of current magnitudes and current directions of feeders; and all electric energy transmitted from the flexible interconnect network for the wind generator sets is finally collected to networked wind generator sets and the networked wind generator sets output the electric energy to a power grid, thereby achieving grid-connection of all wind generator sets in the whole flexible interconnect network for the wind generator sets.

Description

technical field [0001] The invention relates to the field of wind power generation, in particular to a grid-connected control method for wind power generators. Background technique [0002] Electric power resources are an indispensable part of people's daily life and engaged in industrial and agricultural activities, but the long-term application of thermal power generation technology has made environmental pollution increasingly serious and non-renewable resources increasingly scarce. Therefore, new energy power generation technologies such as wind power generation have developed rapidly in the past ten years. The essence of wind power generation is to convert natural wind energy into electrical energy that can be directly used by users. Therefore, improving the efficiency of wind power generation technology at all levels and enhancing the reliability of wind power generation systems has become the basis for expanding the scale of wind farms. Only in this way can the prop...

AI Technical Summary

Problems solved by technology

[0003] The existing wind power technology has the following deficiencies: (1) The improvement of efficiency mainly stays at the level of power generation efficiency, but the room for improving power generation efficiency is limited; (2) Each wind turbine is connected to the large power grid in an individual form. Therefore, the anti-interference ability is poor; (3) each wind turbine has a greater impact and influence on the large power grid when it is connected to the grid

Images