Offshore wind farm with dispersed wind turbines control and HVDC grid-connected control

摘要

HVDC Light system based on voltage source converter connecting large-scale offshore wind farm is illustrated in the paper. The simulation system is built on the basis of power control algorithm, implementing the independent control on bilateral-side converters. On wind turbine side, there are multiple wind generators with respective converter, adopting the power control method based on hysteresis comparison and the converter on system side adopts the virtual flux direct power control. The results of the simulation prove that the HVDC Light system connecting the large-scale offshore wind farm and power system can operate under a normal and stable situation. Every wind generator can be controlled to work under the optimal state. And this system is able to control the active power and reactive power coordinately to satisfy different reactive power demands of the power system.