Research on Controlled Series Complementary and PSS Coordinated Damping Control Method

The uncertainty of wind power output and the change of service mode in the power market led to the frequency adjustment of modern power system not only to respond to the active change of load (within and outside of the region), but also to respond to the change of power output (new energy resources), and The uncertainty of wind power output and the change of service mode in the power market led to the frequency adjustment of modern power system not only to respond to the active change of load (within and outside of the region), but also to respond to the change of power output (new energy resources), and In this context, it is proposed to install the TCSC device on the regional contact line. damping controller is designed to suppress the frequency fluctuation caused by active power disturbance. The system simulation model with TCSC is established by selecting frequency deviation between regions as input signal of damping controller. According to the frequency oscillation mechanism of the system, and by calculating the additional torque provided by TCSC to the system, the phase compensation method is used to set the parameters of the The simulation results show that when the system is disturbed, TCSC can increase the damping of the system and effectively The simulation results show that when the system is disturbed, TCSC can increase the damping of the system and effectively suppress the large fluctuation of the system frequency.