Look-ahead generation dispatch is a critical measurement to accommodate large-scale integration of wind power generation. In real application

the model for conventional generators should involve generation regulation constraints including regulation frequency constraints and discrete output constraints. Look-ahead generation dispatch with regulation constraints is a large-scale nonlinear mixed-integer programming problem

and it could be hardly solved strictly within acceptable time. An efficient three-stage method for solving this problem is developed

together with a forward-backward-pass dynamic programming approach for handling generation regulation constraints. Numerical tests are taken on IEEE 31-bus systems and a large-scale 264-bus power system to verify the high efficiency and practicability of the proposed method.