Abstract: Power industry standard DL/T 1709.4—2017 “Technical specifications of smart grid operation and control system-part IV: Realtime supervisory control & early warning” is formed after summarizing construction and practical results based on function study into realtime supervisory control & early warning application. The main contents, namely real-time supervisory control and smart alarm, automatic control, operation analysis and decision, and auxiliary monitor are interpreted and discussed. Functional requirements and key technical points are explained in detail. The interpretation improves specification understanding for relevant personnel to implement standard functions correctly and easily.

Key words: dispatching and control system, realtime supervisory control &, early warning, function study, specification interpretation