Primary frequency modulation optimization method based on FOXBORO system

The invention discloses a primary frequency modulation optimization method based on an FOXBORO system, and the method comprises the following steps: when a rotation speed signal received by a rotation speed module of a unit is lower than a set rotation speed A, and a primary frequency modulation instruction of the rotation speed module of the unit is increased or unchanged, the primary frequency modulation instruction of the rotation speed module of the unit is advanced or lagged, the actual integral electric quantity of the unit during the primary frequency modulation action can be increased from two aspects, the actual action peak value of the unit during the primary frequency modulation action is increased, and the actual integral area of the unit during the primary frequency modulation action is increased. According to the method, through execution of the step five, the actual integral area of the unit is successfully increased, then the actual action integral electric quantity of the unit during primary