Design and Implementation of Efficient Data Update for Graphical Display on Provincial Platform of the New Generation Substation Centralized Control System

The construction of the provincial platform of the new generation of substation centralized control system continues to advance, the graph, model and date of the provincial platform are formed from the regional centralized control system, and the scale of data storage continues to grow, which puts forward higher requirements in terms of real-time data update and screen operation response ability. In view of the problems of high server load, untimely data update, stuck human-machine screen of workstation, and unsmooth operation response caused by centralized access in the case of large data scale and frequent data changes, an efficient human-machine terminal data update framework is proposed, and the human-machine gateway service is added to the server side to achieve efficient real-time data update through technologies such as subscription/publishing mechanism based on changing data entity messages, shared data pools, and changing data message forwarding. The experimental results show that the human-machine terminal data update using the new framework can better meet the requirements of the provincial centralized control system for large-scale data access and update in terms of server Central Processing Unit(CPU)load rate, real-time data update efficiency, and screen operation fluency.