Method for enhancing the damping of the generator and stabilizing the frequency control system by using a modified PID control

摘要

It relates to a process for enhancing the stability and the damping of the generator of the frequency control system according to the modified PID control method. Receiving feedback the frequency deviation the frequency feedback gain constant (1 / R) times (S1) running the proportional control to the proportional feedback gain constants K _p = 1 and the integral control in (S2), the integral feedback gain constant (K _I) running, and (S3) the differential feedback gain constant differential value of the running differential control to (K _D) and (S4) where the displacement of the valve ( ) Providing; In the speed governor is installed non-windup limiter X = X _GVMAXGV and _GV -X + P _c do not satisfy the (S5) to check the condition 0 X = X _GVMINGV and _GV + P _c -X 0 by checking (S6 ) If you do not satisfy the conditions When the governor modeling satisfied (S7), S5, S6 conditions = 0. The speed governor modeling step of providing (S8) the position displacement (ΔX _GV) of the steam valve; A turbine modeling step (S9); Power generation amount (ΔP _m) an output step (S10); The step of receiving a load applied to the required amount (ΔP _D) provides ΔP _m -ΔP _D (S11);