Studies of Sub-synchronous Oscillation Caused by the Series Compensation Transmission in System with Large-Scale Wind Power

In recent years, the technology of wind power developed very rapidly, In order to solve the issue of wind power consumption and improve the utilization of wind power. Large-scale wind power transmission is imperative. Series compensation technology is currently one of the economic and effective measures to solve large-scale wind power transmission. However, after the series compensation, sending wind power will cause sub-synchronous oscillation. In this paper, firstly, the structure and characteristics of three common wind turbines are introduced, and then they are summarized according to the characteristics of various turbines. The generation mechanism, related characteristics, and suppression measures of subsynchronous oscillations caused by series complement sending. The analysis method of the subsynchronous oscillation of the current large-scale wind power sending system is described. Finally, the part that needs further research is explained.