Angle-type STATCOM based on feedforward control of power grid voltage and control method of angle-type STATCOM

The invention relates to an angle-type STATCOM based on feedforward control of power grid voltage and a control method of the angle-type STATCOM. The control method comprises steps of superposing output quantity of a feedforward controller on the output quantity of a current inner ring, and judging whether the power grid is in a steady state or in a transient state before the STATCOM is unlocked; if the power grid is in the steady state, using a feedforward item based on power grid voltage phase angle compensation as the output quantity of the feedforward controller, and after a control system is stable, switching to take the feedfoward item based on direct acquisition of power grid voltage as the output quantity of the feedforward controller; and if the power grid is in the transient state, using the feedfoward item based on direct acquisition of power grid voltage as the output quantity of the feedforward controller. According to the invention, it can be achieved that the impact current is smallest during u