The Method Of Trade Plan For Automatic Generation Control (AGC) Ancillary Service In Power Market

Automatic Generation Control (AGC) is of most important control function in Energy Management System (EMS), and is an important ancillary service in power market. the basic AGC roles include:(1) Making generation follow the load change, and holding system frequency on fix value;(2) Dispatching power to each area, and holding exchanging power on fix value between each area. The paper presents the basic AGC principle and AGC generators operation situations in our country, and combines foreign AGC ancillary service market pattern, and then brings forward AGC ancillary service trade method, which adapts to our province grids. With the premise of system safety and stability, the goal of buying service at lowest cost, based on justice dispatch principal, the method makes good use of market mechanism to induce power plants to supply AGC service initiatively.