Discussion on algorithm of spinning reserve ancillary services compensation capacity in the regional power grid

According to the management rules about spinning reserve ancillary services in CSG(China Southern Power Grid Co., Ltd.), the date of spinning reserve ancillary services in Yunnan power grid is counted, it´s found that the current compensation capacity algorithm is not well reflect the spinning reserve demand of the grid side. This paper proposes the concept of the validity coefficient of spinning reserve to improve the compensation algorithm, which have been tested and verified by the actual operation date. It can be used for reference on the better use of Yunnan power grid spinning reserve resources and the development of the spinning reserve ancillary service market.