Status and suggestion on AGC ancillary service of Yunnan power grid

For a more equitable and effective management of AGC ancillary service, the Southern Electric Power Supervision Committee promulgated two detailed regulations on the management of ancillary services and parallel running in 2009. Based on the actual data of “Southern Power Grid `1 +5' ancillary services assessment system”, this paper analyzes the Yunnan AGC auxiliary service from multiple perspectives. Based on the power supply characteristics of Yunnan grid, several improvement recommendations on AGC ancillary services are put forward. The recommendations have important roles in the improvement of regulation efficiency, the reasonable utilization of AGC capacity and the improvement of the AGC operating environment.