Substation telecontrol communication method after IEC61970 interface expansion

The invention discloses a substation telecontrol communication method after IEC61970 interface expansion. The method is characterized in that telecontrol communication between a substation and a control center is achieved by expanding IEC61970CIS interface specifications, and protocol conversion which wastes manpower and money during information transmission can be reduced effectively; the CIS open interface and distributed architecture features are applied to substation system construction, and the application integration capability of a substation automation system is increased favorably; under the current trend that hardware equipment performance is increased constantly and network transmission capability is increased constantly, hardware resources can be effectively utilized, power automation system deployment structure is simplified, overall system construction cost is lowered, and the method conforms to the current control center and substation automation system distributed and information integration development trend.