Exciter rotor throw adjusting method and adjusting system

The invention discloses an exciter rotor throw adjusting method and system, and the method comprises the steps: enabling an exciter coupling and a generator coupling to be connected through bolts, applying an initial moment to each bolt, installing a throw special support on a split of an exciter bearing seat, and installing a turning gear on a generator rotor; the turning gear is started, and the throw of the shaft neck of the exciter rotor is measured to serve as the actual throw; calculating the ladle deviation of the excitation coupling according to the throw as the actual ladle deviation; and determining a ladle deviation correction amount according to the numerical value of the ladle deviation and a ladle deviation qualified range, and adjusting the fastening torque of each bolt on the exciter coupling and the generator coupling according to the ladle deviation correction amount until the ladle deviation of the excitation coupling is reduced to be within the ladle deviation qualified range. The problems