Taking the power system of Chongming Island as an example, a concept of wind-gas coordinating equivalent power plant (WGPP) is proposed. This concept applies the method of integrating the wind farm and gas-steam combined cycle power plant (CCPP), which makes the grid-connected power controllable, and make WGPP participate in the system schedule as an equivalent power plant. Then, according to different scheduling targets and connected systems’ scales, two different scheduling modes are proposed: scheduling track mode and CPS control mode. In order to take full advantage of CCPP’s performance characteristics, the automatic generation control (AGC) algorithm based on traditional PI principle is modified. Finally, the RTDS simulation results using field test data and four types of wind events validate the feasibility of the two different scheduling modes.