Due to the continuous expansion of power grid scale, the increasing operation life of equipment, and the continuous improvement of professional management requirements, all kinds of data of relay protection show the characteristics of variety and large quantity. Accordingly, the big data technology has been incorporated and applied in various fields of power system. Based on the power big data technology, this work first analyzed the feasibility of intelligent operation control system of relay protection, and then put forward the possible intelligent operation control system of relay protection, including the construction of all-dimensional data management platform of relay protection, the whole-dimensional management strategy of relay protection, and the management of maintenance event.